You searched for subject:(Exchange interaction).
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Victoria University of Wellington
1.
Thomson-Laing, Jacob.
The effect of plant-fungi interaction generalism on plant community productivity.
Degree: 2020, Victoria University of Wellington
URL: http://hdl.handle.net/10063/9106 
► Plant-plant productivity relationships within ecosystem and community ecology are contentiously debated in the literature due to the numerous factors involved making conclusions hard to draw…
(more)
▼ Plant-plant productivity relationships within ecosystem and community ecology are contentiously debated in the literature due to the numerous factors involved making conclusions hard to draw and disentangle. There are several widely established and supported plant-plant productivity relationships. Increasing species richness can allow for greater niche complementarity, which in turn increases overall above and below ground productivity. Plants with different functional traits can differentially affect a plant community depending on the arrival time of the plant. These priority effects allow certain plants to outcompete others and persist in a community across different temporal scales. Plant species differ in their ability to interact with certain species of symbiotic partners in the soil (Arbuscular mycorrhizal fungi, AMF). This
interaction generalism of a plant species indicates the ability of a plant to host many or few AMF species (generalist or specialist, respectively). However, there remains a limited understanding of plant-fungi relationships especially with respect to community productivity and the temporal effects of adding contrasting types of
interaction generalism into an established community.
The aim of this study was to determine the effects of the addition of an
interaction specialist or generalist plant species into an established plant community on the overall community productivity. Three communities that differed in plant species richness were grown for 38 days at which point either a generalist or specialist was added. Community treatments were carried out in field soil, sterile soil and sterile soil reinoculated with viable field soil, separating the effects of plant niche-partitioning for plant-fungi
interaction partners from the effects of niche-partitioning for other resources (e.g. soil nutrients). Community productivity was tested using different productivity measures; 1) carbon flux as the Net Ecosystem
Exchange (NEE) of the community, 2) total above and below ground plant biomass, 3) neutral lipid fatty acid (NLFA) AMF biomarker, 16:1w5, extracted from total soil and total root mass to assess AMF biomass.
It was difficult to disentangle the effects of species richness and
interaction generalism on carbon flux in communities, with soil type clearly impacting these relationships. In all soil types, an increase in community plant richness had the greatest effect on carbon draw down and biomass productivity with respect to both plant and AMF biomass. In non-sterilised soil,
interaction generalism, specifically the addition of a specialist alongside increased species richness corresponded to increased carbon drawdown. In the context of previous research, this study further highlighted the complexity of factors driving plant-plant-fungi relationships, but clearly identifies the positive role that species richness is having. Although the role of plant-fungi relationships in overall community productive remains unclear, this study provides a platform for future research to be undertaken.
Advisors/Committee Members: Deslippe, Julie.
Subjects/Keywords: Plant Communities; Plant interactions; Interaction profiles; Community productivity; Net Ecosystem Exchange; Plant and Fugal interaction
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APA (6th Edition):
Thomson-Laing, J. (2020). The effect of plant-fungi interaction generalism on plant community productivity. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/9106
Chicago Manual of Style (16th Edition):
Thomson-Laing, Jacob. “The effect of plant-fungi interaction generalism on plant community productivity.” 2020. Masters Thesis, Victoria University of Wellington. Accessed January 22, 2021.
http://hdl.handle.net/10063/9106.
MLA Handbook (7th Edition):
Thomson-Laing, Jacob. “The effect of plant-fungi interaction generalism on plant community productivity.” 2020. Web. 22 Jan 2021.
Vancouver:
Thomson-Laing J. The effect of plant-fungi interaction generalism on plant community productivity. [Internet] [Masters thesis]. Victoria University of Wellington; 2020. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/10063/9106.
Council of Science Editors:
Thomson-Laing J. The effect of plant-fungi interaction generalism on plant community productivity. [Masters Thesis]. Victoria University of Wellington; 2020. Available from: http://hdl.handle.net/10063/9106
2.
Kumar, Deepak.
Thin film growth by combinatorial epitaxy for electronic and energy applications : Croissance de couches minces par épitaxie combinatoire pour applications énergétiques et électroniques.
Degree: Docteur es, Chimie, 2019, Normandie
URL: http://www.theses.fr/2019NORMC255
► Les oxydes de métaux de transition à structure pérovskite ABO3 présentent des degrés de liberté structurels et électroniques fortement enchevêtrés. On s'attend donc à découvrir…
(more)
▼ Les oxydes de métaux de transition à structure pérovskite ABO3 présentent des degrés de liberté structurels et électroniques fortement enchevêtrés. On s'attend donc à découvrir des phases et des propriétés exotiques en agissant sur le réseau par le biais de divers stimuli externes. L'ingénierie des contraintes épitaxiales dans les couches minces d'oxydes est un moyen important d'adapter la distorsion du réseau cristallin par l'effet coopératif de Jahn Teller. En utilisant les couches minces actives PrVO3 de Jahn Teller comme système modèle, la corrélation structurelle avec le magnétisme est établie. Nous imposons différentes contraintes de contrainte épitaxiale dans les films minces PrVO3 via différents moyens, tels que, en utilisant divers substrats monocristallins disponibles dans le commerce, l'épaisseur du film, des substrats avec des orientations de surface cristallines différentes, etc. En conséquence, des phases nouvelles et cachées, absentes du composé en vrac, commencent à apparaître. Notamment, la contrainte de compression dans les films de PrVO3 améliore l'interaction de super échanges menant à une augmentation de la température de Neel antiferromagnétique, une forte anisotropie magnétique dans les films minces de PrVO3 cultivés sur des substrats SrTiO3 orientés (001), 110 et 111, sont quelques exemples.
Transition-metal oxides with an ABO3 perovskite structure exhibit strongly entangled structural and electronic degrees of freedom and thus, one expects to unveil exotic phases and properties by acting on the lattice through various external stimuli. The epitaxial strain engineering in oxide thin films is an important mean to tailor the crystal lattice distortion through cooperative Jahn Teller effect. Using the Jahn Teller active PrVO3 thin films as a model system, the structural correlation with the magnetism is established. We impose different strength of epitaxial strain in PrVO3 thin films via different means, such as, using various commercially available single crystal substrates, film thickness, substrates with different crystal surface orientations, etcetera. As a result, new and hidden phases that are absent in the bulk compound, begin to appear. Namely, the compressive strain in PrVO3 films enhances the super-exchange interaction leading to an increased antiferromagnetic Neel temperature, a strong magnetic anisotropy in PrVO3 thin films grown on (001)-, (110)- and (111)-oriented SrTiO3 substrates, are few examples.
Advisors/Committee Members: Prellier, Wilfrid (thesis director).
Subjects/Keywords: Couches minces d'oxydes; Interaction d'échange; Anisotropie magnétique; Oxide thin films; Magnetism; Exchange interaction; Magnetic anisotropy
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APA (6th Edition):
Kumar, D. (2019). Thin film growth by combinatorial epitaxy for electronic and energy applications : Croissance de couches minces par épitaxie combinatoire pour applications énergétiques et électroniques. (Doctoral Dissertation). Normandie. Retrieved from http://www.theses.fr/2019NORMC255
Chicago Manual of Style (16th Edition):
Kumar, Deepak. “Thin film growth by combinatorial epitaxy for electronic and energy applications : Croissance de couches minces par épitaxie combinatoire pour applications énergétiques et électroniques.” 2019. Doctoral Dissertation, Normandie. Accessed January 22, 2021.
http://www.theses.fr/2019NORMC255.
MLA Handbook (7th Edition):
Kumar, Deepak. “Thin film growth by combinatorial epitaxy for electronic and energy applications : Croissance de couches minces par épitaxie combinatoire pour applications énergétiques et électroniques.” 2019. Web. 22 Jan 2021.
Vancouver:
Kumar D. Thin film growth by combinatorial epitaxy for electronic and energy applications : Croissance de couches minces par épitaxie combinatoire pour applications énergétiques et électroniques. [Internet] [Doctoral dissertation]. Normandie; 2019. [cited 2021 Jan 22].
Available from: http://www.theses.fr/2019NORMC255.
Council of Science Editors:
Kumar D. Thin film growth by combinatorial epitaxy for electronic and energy applications : Croissance de couches minces par épitaxie combinatoire pour applications énergétiques et électroniques. [Doctoral Dissertation]. Normandie; 2019. Available from: http://www.theses.fr/2019NORMC255
Leiden University
3.
Vroegop, Anja Grace.
Winds of Change: exploring island comparisons in archaeology from a Caribbean-Pacific perspective.
Degree: 2012, Leiden University
URL: http://hdl.handle.net/1887/19498
► Island archaeological studies are often characterized by island comparisons and the transfer of information between scholars working in many different island environments around the world.…
(more)
▼ Island archaeological studies are often characterized by island comparisons and the transfer of information between scholars working in many different island environments around the world. Comparisons between island environments, however, have never been systematically critiqued. This research questions the use of comparisons between island environments. Prehistoric and modern day differences are highlighted and their relevance for archaeologists working in both regions considered. Island comparisons are evaluated by i) examining the justifications with which comparisons can be made, ii) studying the past use and outcomes of comparisons between the Caribbean and the Pacific and iii) the application of a case study focusing on inter-island
interaction and
exchange at a local scale within both regions. Although archaeological mobility and
exchange studies reveal high levels of inter-island
interaction, there has been a tendency amongst island archaeologists towards oversimplifying island processes and a stark dichotomy between interacting islands and an archaeology of isolation or ‘essentialising practices’. Moreover it is
argued that island archaeologists are methodologically and theoretically unprepared to deal with these issues due to academic legacies such as island biogeography magnified by popular views of isolation and exoticism. This research aims to systematically critique Island Archaeology and to move towards a more comprehensive understanding of the intricacies, possibilities and limitations of island comparisons.
Advisors/Committee Members: Hofman, Corinne (advisor).
Subjects/Keywords: Island Archaeology; Caribbean Archaeology; Pacific Archaeology; Comparative Archaeology; Exchange and Interaction
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APA (6th Edition):
Vroegop, A. G. (2012). Winds of Change: exploring island comparisons in archaeology from a Caribbean-Pacific perspective. (Masters Thesis). Leiden University. Retrieved from http://hdl.handle.net/1887/19498
Chicago Manual of Style (16th Edition):
Vroegop, Anja Grace. “Winds of Change: exploring island comparisons in archaeology from a Caribbean-Pacific perspective.” 2012. Masters Thesis, Leiden University. Accessed January 22, 2021.
http://hdl.handle.net/1887/19498.
MLA Handbook (7th Edition):
Vroegop, Anja Grace. “Winds of Change: exploring island comparisons in archaeology from a Caribbean-Pacific perspective.” 2012. Web. 22 Jan 2021.
Vancouver:
Vroegop AG. Winds of Change: exploring island comparisons in archaeology from a Caribbean-Pacific perspective. [Internet] [Masters thesis]. Leiden University; 2012. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/1887/19498.
Council of Science Editors:
Vroegop AG. Winds of Change: exploring island comparisons in archaeology from a Caribbean-Pacific perspective. [Masters Thesis]. Leiden University; 2012. Available from: http://hdl.handle.net/1887/19498
University of KwaZulu-Natal
4.
Theil, James Terence Edward.
The simulation of social exchange: developing a multidimensional model of exchange rules in human interaction.
Degree: 2019, University of KwaZulu-Natal
URL: https://researchspace.ukzn.ac.za/handle/10413/18103
► Social exchange underpins social structure and as such, social exchange theory has taken a central role in the field of social psychology. The study of…
(more)
▼ Social
exchange underpins social structure and as such, social
exchange theory has
taken a central role in the field of social psychology. The study of
exchange rules
and how they interact with each other is an area within this theory that has not
received much attention up until now. This study has aimed to study the
exchange
rules of fairness, reciprocity, self-interest, vicinity and ingroup favouritism within an
interacting
exchange network. Agent based computational modelling with a comparison to empirical data has been proposed as a novel method to uncover the process of
exchange from the bottom up. The results of the study indicate that there exists no universal combination of
exchange rules that can predict human behaviour in all settings.
Exchange rules are adopted based on institutional norms as well as norms that emerge during
interaction.
Advisors/Committee Members: Durrheim, Kevin Locksley. (advisor).
Subjects/Keywords: Social exchange.; Human interaction.; Social psychology.; Rules of fairness.; Human behaviour.
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APA (6th Edition):
Theil, J. T. E. (2019). The simulation of social exchange: developing a multidimensional model of exchange rules in human interaction. (Thesis). University of KwaZulu-Natal. Retrieved from https://researchspace.ukzn.ac.za/handle/10413/18103
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Theil, James Terence Edward. “The simulation of social exchange: developing a multidimensional model of exchange rules in human interaction.” 2019. Thesis, University of KwaZulu-Natal. Accessed January 22, 2021.
https://researchspace.ukzn.ac.za/handle/10413/18103.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Theil, James Terence Edward. “The simulation of social exchange: developing a multidimensional model of exchange rules in human interaction.” 2019. Web. 22 Jan 2021.
Vancouver:
Theil JTE. The simulation of social exchange: developing a multidimensional model of exchange rules in human interaction. [Internet] [Thesis]. University of KwaZulu-Natal; 2019. [cited 2021 Jan 22].
Available from: https://researchspace.ukzn.ac.za/handle/10413/18103.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Theil JTE. The simulation of social exchange: developing a multidimensional model of exchange rules in human interaction. [Thesis]. University of KwaZulu-Natal; 2019. Available from: https://researchspace.ukzn.ac.za/handle/10413/18103
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brigham Young University
5.
Chen, Xin.
Development of Monolithic Stationary phases for Cation-Exchange Capillary Liquid Chromatography of Peptides and Proteins.
Degree: PhD, 2011, Brigham Young University
URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3466&context=etd
► This dissertation focuses on the preparation of polymeric monolithic capillaries for ion exchange chromatography of peptides and proteins, since polymeric monoliths have shown promise for…
(more)
▼ This dissertation focuses on the preparation of polymeric monolithic capillaries for ion exchange chromatography of peptides and proteins, since polymeric monoliths have shown promise for providing improved protein separations. Characteristics of monolithic columns include low back pressure, simplicity of fabrication and biocompatibility. Preparation of strong and weak cation-exchange monolithic stationary phases in 75 μm I.D. capillaries by direct in situ copolymerization was achieved using various functional monomers including sulfopropyl methacrylate, phosphoric acid 2-hydroxyethyl methacrylate, bis[2-(methacryloyloxy)ethyl] phosphate and 2-carboxyethyl acrylate with polyethylene glycol diacrylate and other PEG materials. The resulting monoliths provided excellent ion exchange capillary LC of peptides and proteins with good run-to-run [relative standard deviation (RSD) < 1.99%] and column-to-column (RSD < 5.64%) reproducibilities. Narrow peaks were obtained and peak capacities of over 20 were achieved. Dynamic binding capacities of over 30 mg/mL of column volume for lysozyme were measured. A single monomer was used to synthesize a phosphoric acid containing monolith to improve its stability and reproducibility. The monolith was synthesized from only BMEP in 75 μm I.D. UV transparent fused-silica capillaries by photo-initiated polymerization. A dynamic binding capacity (lysozyme) of approximately 70 mg/mL of column volume was measured. Efficiencies of 52,900 plates/m for peptides and 71,000 plates/m for proteins were obtained under isocratic conditions. Good reproducibilities were achieved. Zwitterionic monolithic columns based on photo-initiated copolymerization of N,N-dimethyl-N-methacryloxyethyl-N-(3-sulfopropyl)ammonium betain and poly(ethylene glycol) diacrylate were prepared in 75 μm I.D. fused silica capillaries for hydrophilic interaction chromatography. Inverse size exclusion chromatography was used to characterize the pore structure of the resulting monolith. A typical hydrophilic interaction chromatography mechanism was observed when the organic content in the mobile phase was higher than 60%. Good separations of amides, phenols, and benzoic acids were achieved. The effects of mobile phase pH, salt concentration, and organic modifier content on retention were investigated.
Subjects/Keywords: monolith; ion exchange; hydrophilic interaction; liquid chromatography; Biochemistry; Chemistry
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APA (6th Edition):
Chen, X. (2011). Development of Monolithic Stationary phases for Cation-Exchange Capillary Liquid Chromatography of Peptides and Proteins. (Doctoral Dissertation). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3466&context=etd
Chicago Manual of Style (16th Edition):
Chen, Xin. “Development of Monolithic Stationary phases for Cation-Exchange Capillary Liquid Chromatography of Peptides and Proteins.” 2011. Doctoral Dissertation, Brigham Young University. Accessed January 22, 2021.
https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3466&context=etd.
MLA Handbook (7th Edition):
Chen, Xin. “Development of Monolithic Stationary phases for Cation-Exchange Capillary Liquid Chromatography of Peptides and Proteins.” 2011. Web. 22 Jan 2021.
Vancouver:
Chen X. Development of Monolithic Stationary phases for Cation-Exchange Capillary Liquid Chromatography of Peptides and Proteins. [Internet] [Doctoral dissertation]. Brigham Young University; 2011. [cited 2021 Jan 22].
Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3466&context=etd.
Council of Science Editors:
Chen X. Development of Monolithic Stationary phases for Cation-Exchange Capillary Liquid Chromatography of Peptides and Proteins. [Doctoral Dissertation]. Brigham Young University; 2011. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3466&context=etd
University of Cambridge
6.
Kinsey, Robert.
Active control of superconductivity by means of the ferromagnetic exchange interaction.
Degree: PhD, 2001, University of Cambridge
URL: http://www.dspace.cam.ac.uk/handle/1810/183623https://www.repository.cam.ac.uk/bitstream/1810/183623/2/license.txt
;
https://www.repository.cam.ac.uk/bitstream/1810/183623/5/RJK%20Thesis.pdf.txt
;
https://www.repository.cam.ac.uk/bitstream/1810/183623/7/RJK%20Thesis.pdf.txt
;
https://www.repository.cam.ac.uk/bitstream/1810/183623/3/RJK%20Thesis.pdf.txt
;
https://www.repository.cam.ac.uk/bitstream/1810/183623/8/RJK%20Thesis.pdf.jpg
► Recent theoretical studies have suggested that the observed suppression of superconductivity in superconductor/ferromagnet (S/F) heterostructures could be modulated by controlling the ferromagnetic exchange interaction in…
(more)
▼ Recent theoretical studies have suggested that the observed suppression of superconductivity in superconductor/ferromagnet (S/F) heterostructures could be modulated by controlling the ferromagnetic exchange interaction in the superconductor. The exchange interaction in the superconductor is the sum of the exchange interaction from the ferromagnetic regions, which has a phase and magnitude that depends upon the direction that the ferromagnet is magnetised and the distance. As the exchange interaction has a phase it is possible that the contribution from two regions will cancel out. The exchange interaction, which can be viewed as an imbalance in the spin populations, suppresses superconductivity so any reduction in the exchange interaction will increase the superconducting transition temperature (Tc) of the heterostructure. Thus by changing the magnetisation of the ferromagnetic regions it is possible to control the exchange interaction in the superconductor and so the superconducting properties of the heterostructure.
I have measured the superconducting properties of niobium/cobalt bilayers as a function of the applied magnetic field. I have observed that one component of the superconducting properties is controlled by the net magnetisation rather than the magnitude of the applied field. I have been able to show that this component of the observed change in the superconducting properties is not simply due to stray magnetic field but that the superconductivity is being actively controlled by means of the exchange interaction. This is the first experimental evidence that the superconducting properties of a S/F heterostructure can be controlled in this way, which opens up the possibilities for the construction of future devices.
Subjects/Keywords: Ferromagnetic; Exchange Interaction; Superconductivity; Devices
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APA (6th Edition):
Kinsey, R. (2001). Active control of superconductivity by means of the ferromagnetic exchange interaction. (Doctoral Dissertation). University of Cambridge. Retrieved from http://www.dspace.cam.ac.uk/handle/1810/183623https://www.repository.cam.ac.uk/bitstream/1810/183623/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/5/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/7/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/3/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/8/RJK%20Thesis.pdf.jpg
Chicago Manual of Style (16th Edition):
Kinsey, Robert. “Active control of superconductivity by means of the ferromagnetic exchange interaction.” 2001. Doctoral Dissertation, University of Cambridge. Accessed January 22, 2021.
http://www.dspace.cam.ac.uk/handle/1810/183623https://www.repository.cam.ac.uk/bitstream/1810/183623/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/5/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/7/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/3/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/8/RJK%20Thesis.pdf.jpg.
MLA Handbook (7th Edition):
Kinsey, Robert. “Active control of superconductivity by means of the ferromagnetic exchange interaction.” 2001. Web. 22 Jan 2021.
Vancouver:
Kinsey R. Active control of superconductivity by means of the ferromagnetic exchange interaction. [Internet] [Doctoral dissertation]. University of Cambridge; 2001. [cited 2021 Jan 22].
Available from: http://www.dspace.cam.ac.uk/handle/1810/183623https://www.repository.cam.ac.uk/bitstream/1810/183623/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/5/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/7/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/3/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/8/RJK%20Thesis.pdf.jpg.
Council of Science Editors:
Kinsey R. Active control of superconductivity by means of the ferromagnetic exchange interaction. [Doctoral Dissertation]. University of Cambridge; 2001. Available from: http://www.dspace.cam.ac.uk/handle/1810/183623https://www.repository.cam.ac.uk/bitstream/1810/183623/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/5/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/7/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/3/RJK%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/183623/8/RJK%20Thesis.pdf.jpg
University of Washington
7.
Peterson, Emily.
Insularity and Interaction: Investigating the role of exchange and inter-island interaction in the Banda Islands, Indonesia.
Degree: PhD, 2015, University of Washington
URL: http://hdl.handle.net/1773/33552
► Trade and exchange exerted a powerful force in the historic and protohistoric past of Island Southeast Asian communities. Exchange and interaction are also hypothesized to…
(more)
▼ Trade and
exchange exerted a powerful force in the historic and protohistoric past of Island Southeast Asian communities.
Exchange and
interaction are also hypothesized to have played an important role in the spread of new technologies and lifestyles throughout the region during the Neolithic period. Although it is clear that
interaction has played an important role in shaping Island Southeast Asian cultures on a regional scale, little is known about local histories and trajectories of
exchange in much of the region. This dissertation aims to improve our understanding of the adaptive role played by
exchange and
interaction through an exploration of change over time in the connectedness of island communities in the Banda Islands, eastern Indonesia. Connectedness is examined by measuring source diversity for two different types of archaeological materials. Chemical characterization of pottery using LA-ICP-MS allows the identification of geochemically different paste groups within the earthenware assemblages of two Banda Islands sites. Source diversity measures are employed to identify differences in relative connectedness between these sites and changes over time. Similarly, stable and radiogenic isotope ratios (δ13C, δ18O, 87Sr/86Sr, 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb) are used to identify source groups and quantify source diversity for pigs reared in different locations. Increases in connectedness were expected during periods of increased environmental variability around 3000 BP and 2000 BP, although there is considerable disparity in the timing of these climate shifts based on paleoclimate proxy records from the eastern and western Pacific. At Banda Islands site PA1, connectedness was relatively high at initial occupation about 3500 BP and peaked around 500 years later. A correlation with an increase in El Niño frequency around this time is possible but cannot be confirmed without a well-dated local paleoclimate proxy record. A decline in connectedness as measured by earthenware diversity just after 2300 BP may relate to a change in site use away from permanent occupation. This may be linked with a more dramatic increase in frequency and amplitude of El Niño events and attendant variability in rainfall. In addition to variation in connectedness over time within the PA1 sequence, there is variability in the connectedness of the two sites in this study. At BN1 there was higher diversity of Banda Islands clay sources but PA1 had higher diversity of non-Banda sources. Despite close proximity these communities appear to have operated within different social landscapes. This result highlights the potential of this approach to studying
exchange and
interaction to reveal nuances about the social geographies of the past.
Advisors/Committee Members: Lape, Peter V. (advisor).
Subjects/Keywords: Exchange; Interaction; Island Archaeology; LA-ICP-MS; Stable Isotopes; Archaeology; anthropology
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APA (6th Edition):
Peterson, E. (2015). Insularity and Interaction: Investigating the role of exchange and inter-island interaction in the Banda Islands, Indonesia. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/33552
Chicago Manual of Style (16th Edition):
Peterson, Emily. “Insularity and Interaction: Investigating the role of exchange and inter-island interaction in the Banda Islands, Indonesia.” 2015. Doctoral Dissertation, University of Washington. Accessed January 22, 2021.
http://hdl.handle.net/1773/33552.
MLA Handbook (7th Edition):
Peterson, Emily. “Insularity and Interaction: Investigating the role of exchange and inter-island interaction in the Banda Islands, Indonesia.” 2015. Web. 22 Jan 2021.
Vancouver:
Peterson E. Insularity and Interaction: Investigating the role of exchange and inter-island interaction in the Banda Islands, Indonesia. [Internet] [Doctoral dissertation]. University of Washington; 2015. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/1773/33552.
Council of Science Editors:
Peterson E. Insularity and Interaction: Investigating the role of exchange and inter-island interaction in the Banda Islands, Indonesia. [Doctoral Dissertation]. University of Washington; 2015. Available from: http://hdl.handle.net/1773/33552
Southern Illinois University
8.
Jackson, Wesley Albertus.
Late Woodland Ceramic Decorative Styles in the Lewis Phase of the Lower Ohio Valley: An Investigation of Social Connectedness.
Degree: MA, Anthropology, 2014, Southern Illinois University
URL: https://opensiuc.lib.siu.edu/theses/1358
► This research focuses on the nature and extent of social relationships between two Late Woodland Lewis phase villages, ca. A.D. 650 to 900, in…
(more)
▼ This research focuses on the nature and extent of social relationships between two Late Woodland Lewis phase villages, ca. A.D. 650 to 900, in southern Illinois and western Kentucky. These villages are the Cypress Citadel site in Johnson County, Illinois (111JS76), and the McGilligan Creek site in Livingston County, Kentucky (19LV197). Relationships between the two communities are examined through a detailed comparison of their ceramic assemblages, especially the decorated pottery. Chi square and Cramer's V statistics are used along with the social
interaction and information
exchange theories to determine the most likely to association between the sites. The results suggest a distancing of the social relations between these sites over their 250-year occupations. With a lack of firm temporal data, however, these conclusions are only a best-fit model. Other significant similarities and differences are noted which provide clues for future avenues of study.
Advisors/Committee Members: Butler, Brian.
Subjects/Keywords: Ceramic; Decoration; Information Exchange Theory; Late Woodland; Social Interaction Theory; Style
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APA (6th Edition):
Jackson, W. A. (2014). Late Woodland Ceramic Decorative Styles in the Lewis Phase of the Lower Ohio Valley: An Investigation of Social Connectedness. (Masters Thesis). Southern Illinois University. Retrieved from https://opensiuc.lib.siu.edu/theses/1358
Chicago Manual of Style (16th Edition):
Jackson, Wesley Albertus. “Late Woodland Ceramic Decorative Styles in the Lewis Phase of the Lower Ohio Valley: An Investigation of Social Connectedness.” 2014. Masters Thesis, Southern Illinois University. Accessed January 22, 2021.
https://opensiuc.lib.siu.edu/theses/1358.
MLA Handbook (7th Edition):
Jackson, Wesley Albertus. “Late Woodland Ceramic Decorative Styles in the Lewis Phase of the Lower Ohio Valley: An Investigation of Social Connectedness.” 2014. Web. 22 Jan 2021.
Vancouver:
Jackson WA. Late Woodland Ceramic Decorative Styles in the Lewis Phase of the Lower Ohio Valley: An Investigation of Social Connectedness. [Internet] [Masters thesis]. Southern Illinois University; 2014. [cited 2021 Jan 22].
Available from: https://opensiuc.lib.siu.edu/theses/1358.
Council of Science Editors:
Jackson WA. Late Woodland Ceramic Decorative Styles in the Lewis Phase of the Lower Ohio Valley: An Investigation of Social Connectedness. [Masters Thesis]. Southern Illinois University; 2014. Available from: https://opensiuc.lib.siu.edu/theses/1358
Duke University
9.
Wang, Ruobing.
Exploration of Alkyne-bridged Multi[(Porphinato)metal] Oligomers for Charge Transport Applications and Spin-Spin Exchange Coupling Properties Using Synthetic, Spectroscopic, Potentiometric, and Magnetic Resonance Methods
.
Degree: 2017, Duke University
URL: http://hdl.handle.net/10161/16250
► As silicon-based microelectronics approaches its fundamental physical limit, molecular electronics is emerging as a promising candidate for future ultra-dense electronic devices with individual molecules…
(more)
▼ As silicon-based microelectronics approaches its fundamental physical limit, molecular electronics is emerging as a promising candidate for future ultra-dense electronic devices with individual molecules as active device components. The emerging of molecular spintronics, which exploits the spin-dependent charge transport through organic materials, further demonstrate the promising future of molecular electronics. This dissertation describes the charge transport and spin-spin electronic coupling properties of an extraordinary class of molecular wires, alkyne-bridged porphyrin arrays. Chapter one provides a general background of molecular electronics and molecular wires, as well as the basics of electron paramagnetic resonance (EPR). Chapter two describes utilizing highly conjugated (porphinato)metal-based oligomers (PMn structures) as molecular wire components of nanotransfer printed (nTP) molecular junctions; electrical characterization of these “bulk” nTP devices highlights device resistances that depend on PMn wire length. This study demonstrates the ability to fabricate “bulk” and scalable electronic devices in which function derives from the electronic properties of discrete single molecules, and underscores how a critical device function—wire resistance—may be straightforwardly engineered by PMn molecular composition. Chapter three describe the electronic
exchange coupling between two unpaired spin on Cu(II) ions in meso-meso alkyne-bridged multi[copper(II) porphyrin] (mmPCu2). Spin and conformational dynamics in symmetric mmPCu2 have been studied in toluene solution at variable temperature using EPR spectroscopy. Comparison of the dimer EPR spectra to those of Cu porphyrin monomers shows clear evidence of an isotropic
exchange interaction (Javg) in these biradicaloid structures, manifested by a significant line broadening in the dimer spectra. Comparison of ethyne and butadiyne alkyne bridges reveals a remarkable sensitivity to orbital interactions between the spacer and the metal, which is reflected in measurements of Javg as a function of temperature. The results suggest that orbital symmetry relationships may be more important than previously recognized in the design of optimized molecular spintronic devices. Chapter four reports a study of β-β linked bis[(porphinato)copper(II)] complexes (ββPCu2), which exhibit very different electronic structures compared to their mm linked analogs. By using electron paramagnetic resonance (EPR) spectroscopy, this study exhibits that a wide range (3 orders of magnitude) of the average electronic spin-spin
exchange coupling can be achieved by varying the length of bridges and points of connections between the porphyrin rings. The pathways for mmPCu2 and ββPCu2 complexes were also investigated, with the ββPCu2 complexes exhibiting a dominant σ-type pathway and the mmPCu2 complexes showing a dominant π-type pathway.
Advisors/Committee Members: Therien, Michael J (advisor).
Subjects/Keywords: Chemistry;
Physical chemistry;
EPR;
exchange interaction;
molecular wire;
porphyrin;
simulation
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APA (6th Edition):
Wang, R. (2017). Exploration of Alkyne-bridged Multi[(Porphinato)metal] Oligomers for Charge Transport Applications and Spin-Spin Exchange Coupling Properties Using Synthetic, Spectroscopic, Potentiometric, and Magnetic Resonance Methods
. (Thesis). Duke University. Retrieved from http://hdl.handle.net/10161/16250
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wang, Ruobing. “Exploration of Alkyne-bridged Multi[(Porphinato)metal] Oligomers for Charge Transport Applications and Spin-Spin Exchange Coupling Properties Using Synthetic, Spectroscopic, Potentiometric, and Magnetic Resonance Methods
.” 2017. Thesis, Duke University. Accessed January 22, 2021.
http://hdl.handle.net/10161/16250.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wang, Ruobing. “Exploration of Alkyne-bridged Multi[(Porphinato)metal] Oligomers for Charge Transport Applications and Spin-Spin Exchange Coupling Properties Using Synthetic, Spectroscopic, Potentiometric, and Magnetic Resonance Methods
.” 2017. Web. 22 Jan 2021.
Vancouver:
Wang R. Exploration of Alkyne-bridged Multi[(Porphinato)metal] Oligomers for Charge Transport Applications and Spin-Spin Exchange Coupling Properties Using Synthetic, Spectroscopic, Potentiometric, and Magnetic Resonance Methods
. [Internet] [Thesis]. Duke University; 2017. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/10161/16250.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wang R. Exploration of Alkyne-bridged Multi[(Porphinato)metal] Oligomers for Charge Transport Applications and Spin-Spin Exchange Coupling Properties Using Synthetic, Spectroscopic, Potentiometric, and Magnetic Resonance Methods
. [Thesis]. Duke University; 2017. Available from: http://hdl.handle.net/10161/16250
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
10.
Napolitano, Lia Munhoz Benati.
Estudo através da técnica de ressonância paramagnética eletrônica, em bandas X e Q, dos compostos dinucleares Cu2(TzTs)4 e [Cu(flu)2DMF]2.
Degree: PhD, Física Aplicada, 2009, University of São Paulo
URL: http://www.teses.usp.br/teses/disponiveis/76/76132/tde-24032010-171758/
;
► Esta tese relata um estudo pormenorizado, efetuado através da técnica de Ressonância Paramagnética Eletrônica (RPE) em bandas X (~ 9.5 GHz) e Q (~ 34.5…
(more)
▼ Esta tese relata um estudo pormenorizado, efetuado através da técnica de Ressonância Paramagnética Eletrônica (RPE) em bandas X (~ 9.5 GHz) e Q (~ 34.5 GHz), de amostras nas formas cristalina e pulverizada dos compostos dinucleares Cu2(TzTs)4, C40H36Cu2N8O8S8, e [Cu(flu)2DMF]2, C62H50Cu2F12N6O10. Tratamentos meticulosos dos espectros de RPE pertinentes a tais compostos propiciaram determinar tanto o parâmetro de interação antiferromagnética, J0, entre pares de íons Cu(II) existentes em uma unidade dinuclear (Hex = J0 S1·S2) como também os valores principais alusivos às matrizes g e D; onde a primeira refere-se à interação Zeeman [Hz = BB0(g1·S1 + g2·S2)] e a última reporta as interações spin-spin anisotrópicas (Hani = S1·D·S2) entre pares de íons Cu(II) presentes em uma unidade dinuclear. Ademais, medidas de RPE realizadas com um monocristal do composto Cu2(TzTs)4 permitiram detectar e estimar, no contexto interdinuclear, o fraco acoplamento de exchange, |J\'| = (0.060 ± 0.015) cm-1, existente entre unidades dinucleares vizinhas: este acoplamento existente entre uma unidade dinuclear e o meio randômico constituído pelas unidades dinucleares vizinhas conduz à decoerência (i.e. uma transição de fase quântica que colapsa a interação dipolar quando a magnitude do acoplamento de exchange isotrópico entre as unidades dinucleares vizinhas iguala-se à magnitude do acoplamento dipolar intradinuclear). No âmbito concernente ao composto [Cu(flu)2DMF]2, foi possível simular acuradamente as sete linhas de ressonância características do desdobramento hiperfino advindo de n = 2 núcleos equivalentes de centros paramagnéticos Cu2+ (I = 3/2) e, por conseguinte, os valores principais pertinentes à matriz de interação hiperfina A (Hhyper = S1·A·I1 + S2·A·I2) puderam ser precisamente determinados.
We report detailed Electron Paramagnetic Resonance (EPR) studies at X-band (~ 9.5 GHz) and Q-band (~ 34.5 GHz) of powder and single-crystal samples of the dinuclear compounds Cu2(TzTs)4, C40H36Cu2N8O8S8, and [Cu(flu)2DMF]2, C62H50Cu2F12N6O10. Meticulous investigations of their EPR data allow determining the antiferromagnetic interaction parameter, J0, between Cu(II) ions in the dinuclear unit (Hex = J0 S1·S2) as well as the principal values of both matrices g and D, where the first one is related to the Zeeman interaction [Hz = BB0(g1·S1 + g2·S2)] and the latter is associated with the anisotropic spin-spin interactions (Hani = S1·D·S2) between Cu(II) ion pairs in a dinuclear unit. In addition, EPR measurements of single-crystal samples of the compound Cu2(TzTs)4 allow detecting and estimating very weak exchange couplings between neighbour dinuclear units with an estimated magnitude |J\'| = (0.060 ± 0.015) cm-1: this coupling with the environment leads to decoherence (i.e. a quantum phase transition that collapses the dipolar interaction when the isotropic exchange coupling with neighbor dinuclear units equals the magnitude of the intradinuclear dipolar coupling). With reference to [Cu(flu)2DMF]2 compound, it was possible to simulate…
Advisors/Committee Members: Nascimento, Otaciro Rangel.
Subjects/Keywords: Acoplamento de exchange; Dinuclear units; Dipolar interaction; Electron Paramagnetic Resonance (EPR); Exchange couplings; Interação dipolar; Ressonância Paramagnética Eletrônica (RPE); Unidades dinucleares
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APA (6th Edition):
Napolitano, L. M. B. (2009). Estudo através da técnica de ressonância paramagnética eletrônica, em bandas X e Q, dos compostos dinucleares Cu2(TzTs)4 e [Cu(flu)2DMF]2. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/76/76132/tde-24032010-171758/ ;
Chicago Manual of Style (16th Edition):
Napolitano, Lia Munhoz Benati. “Estudo através da técnica de ressonância paramagnética eletrônica, em bandas X e Q, dos compostos dinucleares Cu2(TzTs)4 e [Cu(flu)2DMF]2.” 2009. Doctoral Dissertation, University of São Paulo. Accessed January 22, 2021.
http://www.teses.usp.br/teses/disponiveis/76/76132/tde-24032010-171758/ ;.
MLA Handbook (7th Edition):
Napolitano, Lia Munhoz Benati. “Estudo através da técnica de ressonância paramagnética eletrônica, em bandas X e Q, dos compostos dinucleares Cu2(TzTs)4 e [Cu(flu)2DMF]2.” 2009. Web. 22 Jan 2021.
Vancouver:
Napolitano LMB. Estudo através da técnica de ressonância paramagnética eletrônica, em bandas X e Q, dos compostos dinucleares Cu2(TzTs)4 e [Cu(flu)2DMF]2. [Internet] [Doctoral dissertation]. University of São Paulo; 2009. [cited 2021 Jan 22].
Available from: http://www.teses.usp.br/teses/disponiveis/76/76132/tde-24032010-171758/ ;.
Council of Science Editors:
Napolitano LMB. Estudo através da técnica de ressonância paramagnética eletrônica, em bandas X e Q, dos compostos dinucleares Cu2(TzTs)4 e [Cu(flu)2DMF]2. [Doctoral Dissertation]. University of São Paulo; 2009. Available from: http://www.teses.usp.br/teses/disponiveis/76/76132/tde-24032010-171758/ ;
University of Georgia
11.
Shank, Daniel Burton.
Affect toward computers who coerce in social exchange.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/24754
► How does interaction, specifically coercive interaction, with computer or human actors change one’s affective perception of them? "Computers Are Social Actors" (CASA) research posits that…
(more)
▼ How does interaction, specifically coercive interaction, with computer or human actors change one’s affective perception of them? "Computers Are Social Actors" (CASA) research posits that people interact with computers socially and examines
how people interact with one computer differently from another, not how the interactions could differ between computers and humans. Social exchange theory suggests how coercive behaviors alter affective perceptions of exchange partners, and affect
control theory predicts how perceptions of actors who coerce differ based on their computer or human identity and the observer’s gender. I conducted an experiment modeled on a previous study by Molm in coercive, reciprocal social exchange. I modified and
extended this study by examining how exchange partner’s strategy (coercive or non-coercive), partner’s identity (human or computer), and subject’s gender influenced the subject’s affective perception of her partner. The results supported CASA literature
with computer and human identities not differing in perceived affect.
Subjects/Keywords: Social Exchange; Affect Control Theory; CASA; Human-Computer Interaction; Affect; Coercion; Punishment Power; Reciprocal Exchange; Gender
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APA (6th Edition):
Shank, D. B. (2014). Affect toward computers who coerce in social exchange. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/24754
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Shank, Daniel Burton. “Affect toward computers who coerce in social exchange.” 2014. Thesis, University of Georgia. Accessed January 22, 2021.
http://hdl.handle.net/10724/24754.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Shank, Daniel Burton. “Affect toward computers who coerce in social exchange.” 2014. Web. 22 Jan 2021.
Vancouver:
Shank DB. Affect toward computers who coerce in social exchange. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/10724/24754.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Shank DB. Affect toward computers who coerce in social exchange. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/24754
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
12.
Francols, Nathalie.
L’échange d’aide dans l’interaction didactique à l’école primaire : The exchange of help in the didactic interaction.
Degree: Docteur es, Sciences du langage, 2010, Université Lumière – Lyon II
URL: http://www.theses.fr/2010LYO20078
► Nous avons observé l’aide dans l’interaction entre enfants et enseignants, avec une perspective moins centrée sur l’apprentissage que sur les enjeux relationnels entre les acteurs.…
(more)
▼ Nous avons observé l’aide dans l’interaction entre enfants et enseignants, avec une perspective moins centrée sur l’apprentissage que sur les enjeux relationnels entre les acteurs. Les manières dont l’aide est apportée par le maître aux élèves montrent comment se construit au coup par coup le rapport de dépendance et d’autonomie qui fonde les relations humaines. Notre recherche s’inscrit dans le cadre de l’Analyse des Discours en Interaction. La visée est descriptive : à partir d’un corpus filmé de quatre classes de grande section de maternelle et de CM2, nous avons analysé les échanges entre enseignant et élèves en tenant compte du contexte de communication spécifique. Dans l’échange d’aide, on peut distinguer trois moments : (1) le déclencheur de l’aide : une action de l’élève (verbale ou non verbale) provoque la réponse aidante de l’enseignant. Le déclencheur peut être explicitement une demande d’aide ou un autre acte (demande de validation, signe d’inactivité ou de découragement) que l’enseignant interprète comme un besoin d’aide ;(2) l’aide proprement dite : action verbale ou non verbale, plus ou moins directive, dont la fonction peut être plus ou moins cognitive ou technique (tenir la main pour écrire ou relire une consigne) ou affective (une parole qui motive et encourage) ;(3) la clôture : les événements qui déclenchent la séparation de l’aidé et de l’aidant ainsi que la manière dont ils se quittent après un échange d’aide.
We have examined the functioning of help in the children - teacher's interaction, focussing on the participants' relations more than on learning issues. The ways in which teachers provide help to pupils show how a balance between dependence and autonomy is reached in their relation in an ad hoc manner.Our research relies on the framework of Analysis of Talk in Interaction, and has a descriptive purpose. On the basis of video-recordings of four classes of kindergarten and CM2, we have analyzed exchanges between teacher and pupils taking into account the specificity of the didactic context.In "help exchange", we can distinguish three stages:(1) The event that triggers help out: a pupil's action (be it verbal or not) triggers out a helping response by the teacher. The source event can be an explicit request for help or another act (like a request for validation, a sign of inactivity or of discouragement) that the teacher interprets as a need of assistance;(2) The help itself: verbal or nonverbal action, which can be more or less directive, and whose function can be more or less cognitive or technical (holding hands to write, or read an instruction) or emotional (a word that motivates, and encourages);(3) Closing: the events that trigger the separation of the "helper" and the "helper" out, and the way in which they leave after an exchange of help.
Advisors/Committee Members: Traverso, Véronique (thesis director).
Subjects/Keywords: Aide; Analyse du discours-en-interaction; Échange; Interaction didactique; Demande d’aide; Face; Territoire; Help; Analysis of Talk in Interaction; Exchange; Didactic interaction; Request for help; Face; Territory
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APA (6th Edition):
Francols, N. (2010). L’échange d’aide dans l’interaction didactique à l’école primaire : The exchange of help in the didactic interaction. (Doctoral Dissertation). Université Lumière – Lyon II. Retrieved from http://www.theses.fr/2010LYO20078
Chicago Manual of Style (16th Edition):
Francols, Nathalie. “L’échange d’aide dans l’interaction didactique à l’école primaire : The exchange of help in the didactic interaction.” 2010. Doctoral Dissertation, Université Lumière – Lyon II. Accessed January 22, 2021.
http://www.theses.fr/2010LYO20078.
MLA Handbook (7th Edition):
Francols, Nathalie. “L’échange d’aide dans l’interaction didactique à l’école primaire : The exchange of help in the didactic interaction.” 2010. Web. 22 Jan 2021.
Vancouver:
Francols N. L’échange d’aide dans l’interaction didactique à l’école primaire : The exchange of help in the didactic interaction. [Internet] [Doctoral dissertation]. Université Lumière – Lyon II; 2010. [cited 2021 Jan 22].
Available from: http://www.theses.fr/2010LYO20078.
Council of Science Editors:
Francols N. L’échange d’aide dans l’interaction didactique à l’école primaire : The exchange of help in the didactic interaction. [Doctoral Dissertation]. Université Lumière – Lyon II; 2010. Available from: http://www.theses.fr/2010LYO20078
Université de Lorraine
13.
Vallobra, Pierre.
Effects of interfacial interactions on optical switching in magnetic heterostructures : Effets des interactions d’interface sur le renversement optique dans des hétérostructures magnétiques.
Degree: Docteur es, Physique, 2019, Université de Lorraine
URL: http://www.theses.fr/2019LORR0015
► Pendant les 20 dernières années, le nanomagnétisme a suscité un intérêt grandissant au sein de la communauté scientifique du fait de ses nombreuses applications pour…
(more)
▼ Pendant les 20 dernières années, le nanomagnétisme a suscité un intérêt grandissant au sein de la communauté scientifique du fait de ses nombreuses applications pour les mémoires magnétiques. A l’échelle nanométrique beaucoup de propriétés des matériaux magnétiques découlent de leurs interfaces avec d’autres matériaux (magnétiques ou non). Cela explique l’omniprésence des hétérostructures composées de plusieurs couches d’épaisseur nanométrique dans le domaine du nanomagnétisme. Dans les hétérostructures que nous étudions, ces propriétés interfaciales sont le décalage d’échange, l’interaction Dzyaloshinskii-Moriya, l’anisotropie magnétique perpendiculaire et l’échange entre deux couches ferromagnétiques. D’abord nous étudions la modification du champ de décalage d’échange dans une bicouche [Pt/Co]xN/IrMn lorsque l’on l’expose à des impulsions laser de lumière polarisée circulairement. Nous montrons que le champ de décalage d’échange après exposition au laser résulte de la configuration du ferromagnétique [Pt/Co]xN. Nous étudions ensuite les conditions nécessaires à un retournement tout optique dépendant de l’hélicité d’un matériau ferrimagnétique de synthèse composé de deux couches de CoFeB /Pt /CoFeB et Co couplées antiferromagnétiquement et concluons que les facteurs clés qui gouvernent le renversement de l’aimantation totale sont les températures respectives des deux couches. Nous nous sommes aussi concentrés sur la propagation de parois de domaine de Néel de même chiralité stabilisées par interaction Dzyaloshinskii-Moriya dans des multicouches de [Pt/Co/Ni]N. Nous avons finalement démontré la possibilité de générer des bulles skyrmioniques par le laser femtoseconde
During the last 20 years, nanomagnetism has attracted a growing interest in the scientific community due to its multiple applications for magnetic memories. At the nanometer scale, many of the properties of the magnetic materials arise from their interfaces with other materials (magnetic or non-magnetic). This explains the omnipresence of heterostructures composed of several layers of thicknesses in the range of the nanometer in the field of nanomagnetism. In the heterostructures we study, those interfacial properties are the exchange bias, the Dzyaloshinskii-Moriya interaction, the perpendicular magnetic anisotropy and the interlayer exchange between two ferromagnetic layers. First we study the modification of the exchange bias field in a [Pt/Co]xN/IrMn bilayer when we expose it to laser pulses of a femtosecond circularly polarized light. We demonstrate that the final exchange bias field after laser pulses results from the magnetic configuration of the [Pt/Co]xN multilayer. We then study the conditions required for a helicity-dependent all optical switching of a synthetic ferromagnetic material composed of a CoFeB /Pt /CoFeB and a Co ferromagnetic layers coupled antiferromagnetically and conclude that the key factors that drive the switching of the total magnetization are the Curie temperatures of both layers. We focused also on the field-driven…
Advisors/Committee Members: Mangin, Stéphane (thesis director), Rojas-Sanchez, Juan Carlos (thesis director).
Subjects/Keywords: Retournement tout optique; Décalage d’échange; Interaction Dzyaloshinskii-Moriya; All optical switching; Exchange bias; Dzyaloshinskii-Moriya interaction; 538.3
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APA (6th Edition):
Vallobra, P. (2019). Effects of interfacial interactions on optical switching in magnetic heterostructures : Effets des interactions d’interface sur le renversement optique dans des hétérostructures magnétiques. (Doctoral Dissertation). Université de Lorraine. Retrieved from http://www.theses.fr/2019LORR0015
Chicago Manual of Style (16th Edition):
Vallobra, Pierre. “Effects of interfacial interactions on optical switching in magnetic heterostructures : Effets des interactions d’interface sur le renversement optique dans des hétérostructures magnétiques.” 2019. Doctoral Dissertation, Université de Lorraine. Accessed January 22, 2021.
http://www.theses.fr/2019LORR0015.
MLA Handbook (7th Edition):
Vallobra, Pierre. “Effects of interfacial interactions on optical switching in magnetic heterostructures : Effets des interactions d’interface sur le renversement optique dans des hétérostructures magnétiques.” 2019. Web. 22 Jan 2021.
Vancouver:
Vallobra P. Effects of interfacial interactions on optical switching in magnetic heterostructures : Effets des interactions d’interface sur le renversement optique dans des hétérostructures magnétiques. [Internet] [Doctoral dissertation]. Université de Lorraine; 2019. [cited 2021 Jan 22].
Available from: http://www.theses.fr/2019LORR0015.
Council of Science Editors:
Vallobra P. Effects of interfacial interactions on optical switching in magnetic heterostructures : Effets des interactions d’interface sur le renversement optique dans des hétérostructures magnétiques. [Doctoral Dissertation]. Université de Lorraine; 2019. Available from: http://www.theses.fr/2019LORR0015
University of Kentucky
14.
Terzic, Jasminka.
A Systematic Study of the Effect of Spin-Orbit Interaction on Properties of Tetravalent and Pentavalent Iridate Compounds.
Degree: 2016, University of Kentucky
URL: https://uknowledge.uky.edu/physastron_etds/40
► Previous studies of iridates have shown that an interplay of strong SOI, Coulomb interaction U, Hund’s rule coupling and crystalline electric fields result in unexpected…
(more)
▼ Previous studies of iridates have shown that an interplay of strong SOI, Coulomb interaction U, Hund’s rule coupling and crystalline electric fields result in unexpected insulating states with complex magnetic states. The novel Jeff =1/2 insulating state first observed in Sr2IrO4 is a direct consequence of such an intriguing interplay and is one of the central foci of this dissertation study.
The work presented here consists of three projects: (1) Effects of Tb doping on Sr2IrO4 having tetravalent Ir4+(5d5) ions; (2) Emergence of unexpected magnetic states in double-perovskite (Ba1-xSrx)2YIrO6 with pentavalent Ir5+(5d4) ions in the presence of strong SOI, and (3) The coexistence of a charge and magnetic order in a magnetic dimer chain system, Ba5AlIr2O11, which has both tetravalent Ir4+ (5d5) and pentavalent Ir5+ (5d4) ions.
A significant portion of this dissertation will focus on Tb doped Sr2IrO4. A central finding of this work is that slight Tb doping (3%) readily suppresses the antiferromagnetic state but retains the insulating state, indicating an unusual correlation between the magnetic and insulating states as a result of the presence of the strong SOI.
However, SOI is not the only significant phenomenon. The study on the double-perovskite (Ba1-xSrx)2YIrO6 revealed an exotic magnetic ground state, in sharp contrast to the anticipated singlet ground state in the strong SOI limit, raising an urgent question: is SOI as dominant as was initially anticipated in the iridates?
Finally, this study turns to a system containing both Ir4+ and Ir5+ ions, Ba5AlIr2O11. This system features dimer chains of two inequivalent octahedra occupied by tetravalent Ir4+ (5d5) and pentavalent Ir5+ (5d4) ions respectively. Ba5AlIr2O11 undergoes charge and magnetic order transitions at 210 K and 4.5 K, respectively.
SOI-driven physics is a rapidly evolving field with an ever growing list of theoretical proposals which have enjoyed very limited experimental confirmation thus far. This study has revealed a large range of interesting phenomena in the iridates that defy conventional theoretical arguments and that help to fill an experimental void in this field.
Subjects/Keywords: spin-orbit interaction; iridates; double exchange; Mott insulator; Coulomb interaction; Hund's rule coupling; Condensed Matter Physics
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APA (6th Edition):
Terzic, J. (2016). A Systematic Study of the Effect of Spin-Orbit Interaction on Properties of Tetravalent and Pentavalent Iridate Compounds. (Doctoral Dissertation). University of Kentucky. Retrieved from https://uknowledge.uky.edu/physastron_etds/40
Chicago Manual of Style (16th Edition):
Terzic, Jasminka. “A Systematic Study of the Effect of Spin-Orbit Interaction on Properties of Tetravalent and Pentavalent Iridate Compounds.” 2016. Doctoral Dissertation, University of Kentucky. Accessed January 22, 2021.
https://uknowledge.uky.edu/physastron_etds/40.
MLA Handbook (7th Edition):
Terzic, Jasminka. “A Systematic Study of the Effect of Spin-Orbit Interaction on Properties of Tetravalent and Pentavalent Iridate Compounds.” 2016. Web. 22 Jan 2021.
Vancouver:
Terzic J. A Systematic Study of the Effect of Spin-Orbit Interaction on Properties of Tetravalent and Pentavalent Iridate Compounds. [Internet] [Doctoral dissertation]. University of Kentucky; 2016. [cited 2021 Jan 22].
Available from: https://uknowledge.uky.edu/physastron_etds/40.
Council of Science Editors:
Terzic J. A Systematic Study of the Effect of Spin-Orbit Interaction on Properties of Tetravalent and Pentavalent Iridate Compounds. [Doctoral Dissertation]. University of Kentucky; 2016. Available from: https://uknowledge.uky.edu/physastron_etds/40
NSYSU
15.
Huang, Tzu-chieh.
Study of Magnetic and Transport Properties of La0.7Sr0.3MnO3 (111)Thin Films.
Degree: Master, Physics, 2015, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731115-111753
► Bismuth ferrite material (BiFeO3, BFO) exhibits ferroelectric and antiferromagnetic properties simultaneously at room temperature. It has attracted researchers to study the effect of magnetic and…
(more)
▼ Bismuth ferrite material (BiFeO3, BFO) exhibits ferroelectric and antiferromagnetic properties simultaneously at room temperature. It has attracted researchers to study the effect of magnetic and electric field controlled
interaction between multiferroic/metallic ferromagnetic bilayer for room temperature device application.
In this work, we are investigating La0.7Sr0.3MnO3 thin films deposition on STO(001) and STO(111) substrate at different oxygen pressure (100mtorrã200mtorrã300mtorrã400mtorr) by Pulsed Laser Deposition technique, for using it as conducting layer in BPFO/LSMO/STO system in the future..
The results show 100mTorr thin filmâs diffraction peak is shifted to lower degree than other higher oxygen pressure (200mTorrã300mTorrã400mTorr) thin films, the resistivity is higher than other sample, and the magnetization vs magnetic field measurement show that it has more than one ferromagnetic phases. It seems that this system have more oxygen vacancies than our other samples, which causes shift in diffraction peak, higher resistivity and imperfect phase (more than one ferromagnetic phases). Films deposited at higher oxygen pressure(200mTorrã300mTorrã400mTorr) are more conductive, have higher Curie Temperature (Tc=350K). These results show that thin films grown under higher oxygen pressure are better ferromagnetic conductor at room temperature. LSMO grown at STO(111) with 200mTorr oxygen pressure exhibits smallest thickness and smallest coercivity, which might be due to parallel domain alignment, that is why it has better conductive and magnetic properties.
Advisors/Committee Members: Shih-Jye Sun (chair), Chun-Yu Hsu (chair), Hsiung Chou (committee member).
Subjects/Keywords: Magnetic material; Oxygen pressure; La0.7Sr0.3MnO3 thin film; Double exchange interaction; Pulsed laser deposition technique
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APA (6th Edition):
Huang, T. (2015). Study of Magnetic and Transport Properties of La0.7Sr0.3MnO3 (111)Thin Films. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731115-111753
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Huang, Tzu-chieh. “Study of Magnetic and Transport Properties of La0.7Sr0.3MnO3 (111)Thin Films.” 2015. Thesis, NSYSU. Accessed January 22, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731115-111753.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Huang, Tzu-chieh. “Study of Magnetic and Transport Properties of La0.7Sr0.3MnO3 (111)Thin Films.” 2015. Web. 22 Jan 2021.
Vancouver:
Huang T. Study of Magnetic and Transport Properties of La0.7Sr0.3MnO3 (111)Thin Films. [Internet] [Thesis]. NSYSU; 2015. [cited 2021 Jan 22].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731115-111753.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Huang T. Study of Magnetic and Transport Properties of La0.7Sr0.3MnO3 (111)Thin Films. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731115-111753
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universiteit Utrecht
16.
Hennevelt, E.
‘Distance separates only the bodies, not the minds’ – The effect of the quality of Leader-Member Exchange on the relationship between Physical Distance and Job Satisfaction and Organisational Commitment.
Degree: 2009, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/33254
► Recently a Dutch bank/insurance company has decided to stimulate employees to work from their homes half of their work time. Top management raised the question…
(more)
▼ Recently a Dutch bank/insurance company has decided to stimulate employees to work from their homes half of their work time. Top management raised the question what effect a low frequency of
interaction in person between leaders and members has on the job satisfaction and organizational commitment of members. This research expects a moderating effect of the quality of Leader-Member
Exchange (LMX) on the relationship between physical distance and job satisfaction and organizational
commitment. 557 of the 1096 employees (51%) who received an invitation to participate in the research completed the 43 item questionnaire. After factor analysis and reliability analysis, hypotheses were tested using hierarchical regression analysis.
The results show that LMX mediates the negative effect of physical distance on job satisfaction. Job satisfaction turns out to be a partial mediator between LMX and organizational commitment. The most important conclusion of this research is that when leaders and members do not often interact in
person, investing in a good relationship quality is more important than in traditional office settings.
Advisors/Committee Members: Oostrum, J. van.
Subjects/Keywords: Sociale Wetenschappen; Leader-Member Exchange; LMX; organisational commitment; job satisfaction; physical distance; interaction frequency
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APA (6th Edition):
Hennevelt, E. (2009). ‘Distance separates only the bodies, not the minds’ – The effect of the quality of Leader-Member Exchange on the relationship between Physical Distance and Job Satisfaction and Organisational Commitment. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/33254
Chicago Manual of Style (16th Edition):
Hennevelt, E. “‘Distance separates only the bodies, not the minds’ – The effect of the quality of Leader-Member Exchange on the relationship between Physical Distance and Job Satisfaction and Organisational Commitment.” 2009. Masters Thesis, Universiteit Utrecht. Accessed January 22, 2021.
http://dspace.library.uu.nl:8080/handle/1874/33254.
MLA Handbook (7th Edition):
Hennevelt, E. “‘Distance separates only the bodies, not the minds’ – The effect of the quality of Leader-Member Exchange on the relationship between Physical Distance and Job Satisfaction and Organisational Commitment.” 2009. Web. 22 Jan 2021.
Vancouver:
Hennevelt E. ‘Distance separates only the bodies, not the minds’ – The effect of the quality of Leader-Member Exchange on the relationship between Physical Distance and Job Satisfaction and Organisational Commitment. [Internet] [Masters thesis]. Universiteit Utrecht; 2009. [cited 2021 Jan 22].
Available from: http://dspace.library.uu.nl:8080/handle/1874/33254.
Council of Science Editors:
Hennevelt E. ‘Distance separates only the bodies, not the minds’ – The effect of the quality of Leader-Member Exchange on the relationship between Physical Distance and Job Satisfaction and Organisational Commitment. [Masters Thesis]. Universiteit Utrecht; 2009. Available from: http://dspace.library.uu.nl:8080/handle/1874/33254
University of Michigan
17.
Wang, Qingyi.
Protein-Protein Interaction Analysis: Expanded Hydrogen/Deuterium Exchange Tandem Mass Spectrometry and Host Cell Protein Characterization.
Degree: PhD, Chemistry, 2019, University of Michigan
URL: http://hdl.handle.net/2027.42/150000
► Elucidating protein structures, dynamics, and interactions is critical for understanding their roles in health and disease. In the biopharmaceutical industry, bioanalytical science allows, e.g., insights…
(more)
▼ Elucidating protein structures, dynamics, and interactions is critical for understanding their roles in health and disease. In the biopharmaceutical industry, bioanalytical science allows, e.g., insights into how these complex molecules interact, and enables their characterization to assure safety and consistency of biotherapeutic manufacturing. Mass spectrometry (MS)-based methods, such as hydrogen/deuterium
exchange (HDX) MS, are powerful tools for structural proteomics. This dissertation presents analytical strategies for incorporating gas-phase fragmentation for improved structural resolution in HDX MS workflows in both positive and negative ion mode, and for improving host cell protein characterization in biopharmaceuticals.
HDX is typically performed in positive ion mode. In Chapter 2, the feasibility of several negative ion mode tandem mass spectrometry (MS/MS) techniques for HDX coupling is explored. Regio-selectively deuterated peptide anions were fragmented by negative-ion collision induced dissociation (nCID), negative-ion free radical initiated peptide sequencing (nFRIPS), electron detachment dissociation (EDD), and negative-ion electron capture dissociation (niECD) to determine the extent of H/D scrambling in each MS/MS technique. nCID induces extensive H/D scrambling involving histidine C-2 and Cβ-hydrogen atoms for histidine-containing peptides. nFRIPS proceeds with complete hydrogen scrambling but without histidine participation, whereas EDD and niECD demonstrate moderate scrambling with slightly lower levels in niECD. However, improved ionization efficiency, ion transmission, and fragmentation efficiency under HDX quenching conditions are needed for routine application of niECD in HDX MS workflows.
Due to the acidic HDX quenching conditions, the acid protease pepsin is employed for protein digestion. However, resulting peptic peptides may not contain basic residues and therefore carry less average charge than typical tryptic peptides. In Chapter 3, supercharging strategies are explored for combination with electron capture/transfer dissociation (ECD/ETD)-based HDX MS/MS in positive ion mode. These MS/MS techniques require analytes to carry at least two positive charges. The supercharging reagent m-NBA was found to enhance the average charge state for a variety of pepsin-derived peptides, thus increasing ECD/ETD fragmentation efficiency and peptide sequence coverage in bottom-up HDX liquid chromatography (LC)/MS workflows. Retention time shifts in the presence of m-NBA were avoided by injecting m-NBA through a mixing tee following the analytical column.
During these experiments, b-type ions were observed in ECD spectra of supercharged peptides. Such fragment ions are atypical in ECD but have been found at increased levels for peptides containing few or no basic residues. In Chapter 4, we find that such peptides also show abundant hydrogen atom loss from the charge-reduced radical species. We show that, upon ECD of supercharged peptides, the number and abundance of b ions increases with increasing…
Advisors/Committee Members: Hakansson, Kristina I (committee member), Carlson, Heather A (committee member), Kennedy, Robert T (committee member), Ruotolo, Brandon Thomas (committee member).
Subjects/Keywords: Protein Interaction Analysis; Mass Spectrometry; Liquid Chromatography; Hydrogen/Deuterium Exchange; Chemistry; Science
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APA (6th Edition):
Wang, Q. (2019). Protein-Protein Interaction Analysis: Expanded Hydrogen/Deuterium Exchange Tandem Mass Spectrometry and Host Cell Protein Characterization. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/150000
Chicago Manual of Style (16th Edition):
Wang, Qingyi. “Protein-Protein Interaction Analysis: Expanded Hydrogen/Deuterium Exchange Tandem Mass Spectrometry and Host Cell Protein Characterization.” 2019. Doctoral Dissertation, University of Michigan. Accessed January 22, 2021.
http://hdl.handle.net/2027.42/150000.
MLA Handbook (7th Edition):
Wang, Qingyi. “Protein-Protein Interaction Analysis: Expanded Hydrogen/Deuterium Exchange Tandem Mass Spectrometry and Host Cell Protein Characterization.” 2019. Web. 22 Jan 2021.
Vancouver:
Wang Q. Protein-Protein Interaction Analysis: Expanded Hydrogen/Deuterium Exchange Tandem Mass Spectrometry and Host Cell Protein Characterization. [Internet] [Doctoral dissertation]. University of Michigan; 2019. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/2027.42/150000.
Council of Science Editors:
Wang Q. Protein-Protein Interaction Analysis: Expanded Hydrogen/Deuterium Exchange Tandem Mass Spectrometry and Host Cell Protein Characterization. [Doctoral Dissertation]. University of Michigan; 2019. Available from: http://hdl.handle.net/2027.42/150000
Texas A&M University
18.
Mehmood, Tayyab.
Numerical Modeling of Water Flux Interaction Between Brazos River Alluvium Aquifer and Brazos River: Testing of Alternative Conceptual Models.
Degree: MS, Civil Engineering, 2018, Texas A&M University
URL: http://hdl.handle.net/1969.1/174042
► Quantitative characterization of the dynamics of water exchange fluxes between rivers and aquifers is necessary for water resources management, water quality, environment and ecology of…
(more)
▼ Quantitative characterization of the dynamics of water
exchange fluxes between rivers and aquifers is necessary for water resources management, water quality, environment and ecology of the river-aquifer systems. The main uncertain factors for predicting river–aquifer
exchange fluxes are aquifer and riverbed properties. In this study, we characterize the flux
exchange dynamics between Brazos River Alluvium Aquifer and Brazos River, TX, USA, using alternative conceptual models. Six alternative conceptual models for the connection between the river and the aquifer, having varying aquifer lithology and river incision levels and incorporating processes such as river bed clogging and seepage face flow, are numerically modeled in HYDRUS 2D using small-scale, high-resolution transects across the river. Modeled results are tested against observed heads in three wells and finally a best-fit conceptual model is used to quantify river-aquifer flux
exchange dynamics. Additionally we focused on how factors such as aquifer lithology, river channel incision, water table conditions, seepage face boundaries, and low-conductivity river-bed effect hydraulic head distribution and the corresponding flux
exchange dynamics. Our results demonstrate that only a small portion of the aquifer close to the river channel is well-connected with the river and a major portion of the aquifer is disconnected. The proposed conceptual model predicts a) much frequent flux reversals (changes between gaining and losing conditions) and b) much smaller amount of recharge and discharges compared to that of the conceptual model which has been assumed by earlier studies; a reduction of 151% in recharge and 116% in discharges. These results suggest that the magnitude and dynamics of water flux
exchange between the river and the aquifer are independent of the hydraulic gradients in the wider disconnected aquifer and are determined by the hydraulic gradients in the connected aquifer close to the river. The results also demonstrate that river-aquifer flux
exchange is sensitive to aquifer lithology, river incision depth, and river-bed clogging. While different settings of aquifer lithology and river incision can produce very similar heads in the wider aquifer, the hydraulic head distribution close to the river and hence the river-aquifer flux
exchange varies quite drastically from model to model. River-bed clogging decreases the magnitude of fluxes and effects hydraulic head in the aquifer, especially in the vicinity of the river channel, depending upon the gaining and losing river conditions. Furthermore, seepage face flow could be of the same order as that of flows through river-bed depending upon aquifer lithology and corresponding river incision depth.
Advisors/Committee Members: Miller, Gretchen R (advisor), Knappett, Peter S.K. (committee member), Gao, Huilin (committee member).
Subjects/Keywords: Groundwater Modeling; Surface-Water and Groundwater Interaction; River-Aquifer Flux Exchange; Alternative Conceptual Models.
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APA (6th Edition):
Mehmood, T. (2018). Numerical Modeling of Water Flux Interaction Between Brazos River Alluvium Aquifer and Brazos River: Testing of Alternative Conceptual Models. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/174042
Chicago Manual of Style (16th Edition):
Mehmood, Tayyab. “Numerical Modeling of Water Flux Interaction Between Brazos River Alluvium Aquifer and Brazos River: Testing of Alternative Conceptual Models.” 2018. Masters Thesis, Texas A&M University. Accessed January 22, 2021.
http://hdl.handle.net/1969.1/174042.
MLA Handbook (7th Edition):
Mehmood, Tayyab. “Numerical Modeling of Water Flux Interaction Between Brazos River Alluvium Aquifer and Brazos River: Testing of Alternative Conceptual Models.” 2018. Web. 22 Jan 2021.
Vancouver:
Mehmood T. Numerical Modeling of Water Flux Interaction Between Brazos River Alluvium Aquifer and Brazos River: Testing of Alternative Conceptual Models. [Internet] [Masters thesis]. Texas A&M University; 2018. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/1969.1/174042.
Council of Science Editors:
Mehmood T. Numerical Modeling of Water Flux Interaction Between Brazos River Alluvium Aquifer and Brazos River: Testing of Alternative Conceptual Models. [Masters Thesis]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/174042
York University
19.
Oganesyan, Irina.
Unravelling the Conformational Dynamics of a-Synuclein's Folding Pathway By Hydrogen-Deuterium Exchange Mass Spectrometry in the Presence of Phospholipid Nanodiscs.
Degree: MSc -MS, Chemistry, 2019, York University
URL: http://hdl.handle.net/10315/35807
► Conformational changes of the -synuclein protein during docking into a phospholipid membrane is suspected to play a central role in neuronal cell death during Parkinsons…
(more)
▼ Conformational changes of the -synuclein protein during docking into a phospholipid membrane is suspected to play a central role in neuronal cell death during Parkinsons disease. This intrinsically disordered protein obtains its secondary helical structure through a pathway of transition states. These states, when improperly folded, are prone to stack into hydrophobic -sheets, which later lead to the formation of fibrils and Lewy bodies the hallmarks of Parkinsons. The ability to elucidate key transition intermediates of -synuclein will clarify the mechanism used in the development of this disease and help facilitate the screening of drugs for the treatment of all -synucleinopathies. In this research, Time-Resolved Hydrogen/Deuterium
Exchange Mass Spectrometry coupled with the nanodiscs technology as artificial membrane was employed to unravel structural behaviour of this protein in the presence of phospholipid bilayer. As a result, the conformational behaviour of SN indicated rather a transient
interaction with phospholipid bilayer than binding to the nanodisc. The key regions of the most structural rearrangements during the
interaction with the lipid membrane were identified and were consistent with the published literature. Based on the results of the kinetic HDX studies, the data proposed an evidence for the structural intermediate of SN which was proposed in different theories on SNs conformational behaviour in vivo.
Advisors/Committee Members: Wilson, Derek J (advisor).
Subjects/Keywords: Chemistry; Intrinsically disordered proteins; hydrogen/deuterium exchange mass spectrometry; protein-lipid interaction; nanodisc membrane mimetics
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APA (6th Edition):
Oganesyan, I. (2019). Unravelling the Conformational Dynamics of a-Synuclein's Folding Pathway By Hydrogen-Deuterium Exchange Mass Spectrometry in the Presence of Phospholipid Nanodiscs. (Masters Thesis). York University. Retrieved from http://hdl.handle.net/10315/35807
Chicago Manual of Style (16th Edition):
Oganesyan, Irina. “Unravelling the Conformational Dynamics of a-Synuclein's Folding Pathway By Hydrogen-Deuterium Exchange Mass Spectrometry in the Presence of Phospholipid Nanodiscs.” 2019. Masters Thesis, York University. Accessed January 22, 2021.
http://hdl.handle.net/10315/35807.
MLA Handbook (7th Edition):
Oganesyan, Irina. “Unravelling the Conformational Dynamics of a-Synuclein's Folding Pathway By Hydrogen-Deuterium Exchange Mass Spectrometry in the Presence of Phospholipid Nanodiscs.” 2019. Web. 22 Jan 2021.
Vancouver:
Oganesyan I. Unravelling the Conformational Dynamics of a-Synuclein's Folding Pathway By Hydrogen-Deuterium Exchange Mass Spectrometry in the Presence of Phospholipid Nanodiscs. [Internet] [Masters thesis]. York University; 2019. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/10315/35807.
Council of Science Editors:
Oganesyan I. Unravelling the Conformational Dynamics of a-Synuclein's Folding Pathway By Hydrogen-Deuterium Exchange Mass Spectrometry in the Presence of Phospholipid Nanodiscs. [Masters Thesis]. York University; 2019. Available from: http://hdl.handle.net/10315/35807
Uppsala University
20.
Sandström, Anna.
Facilitating Value in Higher Education : A study of interaction as a tool for value creation.
Degree: Business Studies, 2016, Uppsala University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-275356
► In Sweden two reforms were implemented in 2011 in order to delegate control to universities and improve the quality of tertiary education. Despite the…
(more)
▼ In Sweden two reforms were implemented in 2011 in order to delegate control to universities and improve the quality of tertiary education. Despite the efforts, Swedish universities are experiencing a quality crisis and the majority of students are receiving less than the recommended nine hours per week of tutor led education. The quality crisis, the low levels of student-teacher interaction and the reluctance towards marketization and customer focus within higher education, all provides cause for concern on how universities create value for their students. This study aims to examine the interaction students have with teachers, and how the interaction creates value for students. Interviews were conducted with students studying their third year of the business programme at Uppsala University. The result showed that the students thought interaction was important for their learning. Uppsala University was considered to offer sufficient amount of lectures and seminars, although with fluctuations in quality. Most notable in the study was the lack of feedback from teachers. The students showed strong discontent, as feedback would help them improve and learn, fulfilling their value creation.
Subjects/Keywords: Co-creation of value; interaction; dialogical exchange; feedback; higher education; customer focus
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APA (6th Edition):
Sandström, A. (2016). Facilitating Value in Higher Education : A study of interaction as a tool for value creation. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-275356
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sandström, Anna. “Facilitating Value in Higher Education : A study of interaction as a tool for value creation.” 2016. Thesis, Uppsala University. Accessed January 22, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-275356.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sandström, Anna. “Facilitating Value in Higher Education : A study of interaction as a tool for value creation.” 2016. Web. 22 Jan 2021.
Vancouver:
Sandström A. Facilitating Value in Higher Education : A study of interaction as a tool for value creation. [Internet] [Thesis]. Uppsala University; 2016. [cited 2021 Jan 22].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-275356.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sandström A. Facilitating Value in Higher Education : A study of interaction as a tool for value creation. [Thesis]. Uppsala University; 2016. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-275356
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
21.
LI XIAN.
DYADIC LEADER MEMBER EXCHANGE: AN INTERACTIONAL PERSPECTIVE.
Degree: 2014, National University of Singapore
URL: http://scholarbank.nus.edu.sg/handle/10635/77762
Subjects/Keywords: LMX; LMI; EXCHANGE; RELATIONSHIP; INTERACTION; RECIPROCITY
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APA (6th Edition):
XIAN, L. (2014). DYADIC LEADER MEMBER EXCHANGE: AN INTERACTIONAL PERSPECTIVE. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/77762
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
XIAN, LI. “DYADIC LEADER MEMBER EXCHANGE: AN INTERACTIONAL PERSPECTIVE.” 2014. Thesis, National University of Singapore. Accessed January 22, 2021.
http://scholarbank.nus.edu.sg/handle/10635/77762.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
XIAN, LI. “DYADIC LEADER MEMBER EXCHANGE: AN INTERACTIONAL PERSPECTIVE.” 2014. Web. 22 Jan 2021.
Vancouver:
XIAN L. DYADIC LEADER MEMBER EXCHANGE: AN INTERACTIONAL PERSPECTIVE. [Internet] [Thesis]. National University of Singapore; 2014. [cited 2021 Jan 22].
Available from: http://scholarbank.nus.edu.sg/handle/10635/77762.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
XIAN L. DYADIC LEADER MEMBER EXCHANGE: AN INTERACTIONAL PERSPECTIVE. [Thesis]. National University of Singapore; 2014. Available from: http://scholarbank.nus.edu.sg/handle/10635/77762
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Minnesota
22.
Faulkner-Gentry, Ivy.
Cross-Cultural Interaction and Migration: Retheorizing Greek Colonization in the 7th-4th Centuries BC with the Exchange of Attic Figured Pottery.
Degree: PhD, Anthropology, 2018, University of Minnesota
URL: http://hdl.handle.net/11299/200193
► This study examines interaction between Greeks and non-Greeks in the regions of Western Europe, particularly southern France, and the northern coast of the Black Sea…
(more)
▼ This study examines interaction between Greeks and non-Greeks in the regions of Western Europe, particularly southern France, and the northern coast of the Black Sea through an analysis of the exchange of Attic pottery vessels. This research validates the importance of material culture for understanding culture contact. Furthermore, it demonstrates how interdisciplinary frameworks are essential for this type of interpretation. Finally, this study is particularly relevant as a case for comparison to today where migration and cross-cultural interaction are a constant. Previous scholarship on the movement of Greeks beyond Greece in the Archaic period (7th-5th c. BC) has focused on models of acculturation and/or colonization. These models lack a full appreciation of the nuances of interaction and local agency. Migration as a framework changes the perception of interaction drastically from the colonial mindset by upsetting preconceived notions of power differentials and intentionality. My project looks at interaction using the deposition of Attic pottery in both Greek and non- Greek contexts in order to fully explore these nuances. Comparison of both contexts allows for greater local agency and opens up questions about our general understanding of this period of history. The conclusions of this study are that 1) colonization is not an adequate model for the interaction of the Greeks entering the regions of Western Europe and the northern coast of the Black Sea and the local populations they encountered, 2) migration is a better model for understanding the relative positions of power occupied by both parties, 3) Attic pottery was significant in among the objects exchanged between these groups as demonstrated by its depositional contexts, and 4) Attic pottery was significant not just as a trade item, but because of symbolic associations, perhaps best understood in terms of social networks or diplomacy, that were attached to this category of physical object.
Subjects/Keywords: Black Sea; Cross-Cultural Interaction; Culture Contact; Gift-Exchange; Greek Colonization; Migration
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APA (6th Edition):
Faulkner-Gentry, I. (2018). Cross-Cultural Interaction and Migration: Retheorizing Greek Colonization in the 7th-4th Centuries BC with the Exchange of Attic Figured Pottery. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/200193
Chicago Manual of Style (16th Edition):
Faulkner-Gentry, Ivy. “Cross-Cultural Interaction and Migration: Retheorizing Greek Colonization in the 7th-4th Centuries BC with the Exchange of Attic Figured Pottery.” 2018. Doctoral Dissertation, University of Minnesota. Accessed January 22, 2021.
http://hdl.handle.net/11299/200193.
MLA Handbook (7th Edition):
Faulkner-Gentry, Ivy. “Cross-Cultural Interaction and Migration: Retheorizing Greek Colonization in the 7th-4th Centuries BC with the Exchange of Attic Figured Pottery.” 2018. Web. 22 Jan 2021.
Vancouver:
Faulkner-Gentry I. Cross-Cultural Interaction and Migration: Retheorizing Greek Colonization in the 7th-4th Centuries BC with the Exchange of Attic Figured Pottery. [Internet] [Doctoral dissertation]. University of Minnesota; 2018. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/11299/200193.
Council of Science Editors:
Faulkner-Gentry I. Cross-Cultural Interaction and Migration: Retheorizing Greek Colonization in the 7th-4th Centuries BC with the Exchange of Attic Figured Pottery. [Doctoral Dissertation]. University of Minnesota; 2018. Available from: http://hdl.handle.net/11299/200193
University of Cambridge
23.
Kinsey, Robert.
Active control of superconductivity by means of the ferromagnetic exchange interaction.
Degree: PhD, 2001, University of Cambridge
URL: https://doi.org/10.17863/CAM.14199
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555191
► Recent theoretical studies have suggested that the observed suppression of superconductivity in superconductor/ferromagnet (S/F) heterostructures could be modulated by controlling the ferromagnetic exchange interaction in…
(more)
▼ Recent theoretical studies have suggested that the observed suppression of superconductivity in superconductor/ferromagnet (S/F) heterostructures could be modulated by controlling the ferromagnetic exchange interaction in the superconductor. The exchange interaction in the superconductor is the sum of the exchange interaction from the ferromagnetic regions, which has a phase and magnitude that depends upon the direction that the ferromagnet is magnetised and the distance. As the exchange interaction has a phase it is possible that the contribution from two regions will cancel out. The exchange interaction, which can be viewed as an imbalance in the spin populations, suppresses superconductivity so any reduction in the exchange interaction will increase the superconducting transition temperature (Tc) of the heterostructure. Thus by changing the magnetisation of the ferromagnetic regions it is possible to control the exchange interaction in the superconductor and so the superconducting properties of the heterostructure. I have measured the superconducting properties of niobium/cobalt bilayers as a function of the applied magnetic field. I have observed that one component of the superconducting properties is controlled by the net magnetisation rather than the magnitude of the applied field. I have been able to show that this component of the observed change in the superconducting properties is not simply due to stray magnetic field but that the superconductivity is being actively controlled by means of the exchange interaction. This is the first experimental evidence that the superconducting properties of a S/F heterostructure can be controlled in this way, which opens up the possibilities for the construction of future devices.
Subjects/Keywords: 537.623; Ferromagnetic; Exchange Interaction; Superconductivity; Devices
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APA (6th Edition):
Kinsey, R. (2001). Active control of superconductivity by means of the ferromagnetic exchange interaction. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.14199 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555191
Chicago Manual of Style (16th Edition):
Kinsey, Robert. “Active control of superconductivity by means of the ferromagnetic exchange interaction.” 2001. Doctoral Dissertation, University of Cambridge. Accessed January 22, 2021.
https://doi.org/10.17863/CAM.14199 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555191.
MLA Handbook (7th Edition):
Kinsey, Robert. “Active control of superconductivity by means of the ferromagnetic exchange interaction.” 2001. Web. 22 Jan 2021.
Vancouver:
Kinsey R. Active control of superconductivity by means of the ferromagnetic exchange interaction. [Internet] [Doctoral dissertation]. University of Cambridge; 2001. [cited 2021 Jan 22].
Available from: https://doi.org/10.17863/CAM.14199 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555191.
Council of Science Editors:
Kinsey R. Active control of superconductivity by means of the ferromagnetic exchange interaction. [Doctoral Dissertation]. University of Cambridge; 2001. Available from: https://doi.org/10.17863/CAM.14199 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555191
University of Cincinnati
24.
Abell, Natalie D.
Reconsidering a Cultural Crossroads: A Diachronic Analysis
of Ceramic Production, Consumption, and Exchange Patterns at Bronze
Age Ayia Irini, Kea, Greece.
Degree: PhD, Arts and Sciences: Classics, 2014, University of Cincinnati
URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396531428
► Although studies of exchange and interaction in the prehistoric Cyclades have become increasingly theoretically sophisticated, the mechanisms through which exchange occurred are still not fully…
(more)
▼ Although studies of
exchange and
interaction in the
prehistoric Cyclades have become increasingly theoretically
sophisticated, the mechanisms through which
exchange occurred are
still not fully understood, and diachronic analyses that emphasize
variability between Cycladic communities are rare. This
dissertation provides a new perspective, employing a micro-level
approach that is focused on the details of stratigraphy,
architecture, ceramics, and other objects in Area B at Ayia Irini
on Kea, in order to reconsider published deposits and assess
detailed questions related to changing production, consumption, and
exchange patterns in this island community over time. I argue that
the distinctive, multicultural nature of the ceramic assemblage at
Ayia Irini is more than the result of its position as a hub between
networks, connecting culturally distinct regions to each other and
the metal deposits of Lavrion in Attica. Ayia Irini was also a
physical locus of
exchange, where people of different cultural
backgrounds interacted with each other and with local residents,
and where non-local people, including craftspeople, were integrated
into the local community. Although participation in exotic or elite
drinking or eating practices may have formed part of internal
negotiations over status, it is also probable that diverse ceramic
shapes in circulation at Ayia Irini were used in drinking or eating
activities that connected locals and non-locals in shared
practices, familiar to both groups. Participation in such
activities would have reinforced social bonds between local and
non-local people and enabled the development and strengthening of
personal relationships, an important precondition for most types of
preindustrial
exchange. At Ayia Irini, a community whose entire
existence seems to have been predicated on participation in
exchange networks, creating and maintaining such social bonds was
vital, and key to the longevity and prosperity of the
settlement.
Advisors/Committee Members: Davis, Jack (Committee Chair).
Subjects/Keywords: Archaeology; Aegean Bronze Age; Archaeological ceramics; Ancient exchange; Interaction networks; Prehistoric craft production
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APA (6th Edition):
Abell, N. D. (2014). Reconsidering a Cultural Crossroads: A Diachronic Analysis
of Ceramic Production, Consumption, and Exchange Patterns at Bronze
Age Ayia Irini, Kea, Greece. (Doctoral Dissertation). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396531428
Chicago Manual of Style (16th Edition):
Abell, Natalie D. “Reconsidering a Cultural Crossroads: A Diachronic Analysis
of Ceramic Production, Consumption, and Exchange Patterns at Bronze
Age Ayia Irini, Kea, Greece.” 2014. Doctoral Dissertation, University of Cincinnati. Accessed January 22, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396531428.
MLA Handbook (7th Edition):
Abell, Natalie D. “Reconsidering a Cultural Crossroads: A Diachronic Analysis
of Ceramic Production, Consumption, and Exchange Patterns at Bronze
Age Ayia Irini, Kea, Greece.” 2014. Web. 22 Jan 2021.
Vancouver:
Abell ND. Reconsidering a Cultural Crossroads: A Diachronic Analysis
of Ceramic Production, Consumption, and Exchange Patterns at Bronze
Age Ayia Irini, Kea, Greece. [Internet] [Doctoral dissertation]. University of Cincinnati; 2014. [cited 2021 Jan 22].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396531428.
Council of Science Editors:
Abell ND. Reconsidering a Cultural Crossroads: A Diachronic Analysis
of Ceramic Production, Consumption, and Exchange Patterns at Bronze
Age Ayia Irini, Kea, Greece. [Doctoral Dissertation]. University of Cincinnati; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396531428
Colorado School of Mines
25.
Divekar, Ashutosh G.
Advanced perfluorinated anion exchange membrane polymers and their issues in electrochemical conversion devices.
Degree: PhD, Chemical and Biological Engineering, 2020, Colorado School of Mines
URL: http://hdl.handle.net/11124/174176
► After decades of dedicated efforts in research and development of the polymer electrolyte membranes for electrochemical conversion devices, the technology is nearing their large-scale commercialization.…
(more)
▼ After decades of dedicated efforts in research and development of the polymer electrolyte membranes for electrochemical conversion devices, the technology is nearing their large-scale commercialization. Improvements like utilization of thin mechanically supported membranes (< 15 μm), advanced Pt catalysts with enhanced activity have made the proton-
exchange membrane class of polymers very attractive for vehicular fuel cell and other electrochemical conversion applications. However, with the increasing energy demand for the rapidly growing population high performing commercial devices with non-precious catalysts need further attention. Anion
exchange membrane polymers perfectly fit this description due to its compatibility with the cheaper electrochemical catalysts. In this work, the potential of novel perfluorinated anion
exchange membranes primarily for low-temperature fuel cell applications were tested. Three iterations of polymer membranes with a PTFE backbone were electrochemically, physiochemically, and morphologically characterized to conclude that the six-carbon alkyl spacer chain is the most promising candidate with a high ionic (OH-) conductivity. Ex-situ characterization of this class of polymers was performed to understand the
interaction of the hydroxyl charge carrier with the atmospheric CO2 in the ambient air as in a commercial fuel cell device, ambient air is used as an oxidant. It was concluded that the CO2 not only interacts with the ionic domains of the polymer but also hampers the crystallinity of the backbone which could potentially lead to mechanical failures while operating for longer durations. From the knowledge gained from this study, a standard fuel cell device was tested to report the highest air-fed anion
exchange membrane fuel cell performance to date (446 mW cm-2). For the first time, the segmented fuel cell hardware was used to understand the spatial differences in the anion
exchange membrane fuel cell performance due to the variation in humidification, fuel or oxidant starvation and the durability issues. Over several days of operation, it was found that the cell degrades primarily in the feed inlet section due to difference in the hydration or water accumulation over the channel length. FTIR analysis was performed to prove that the chemical functionality of the membrane changes due to the fuel cell operation. The catalyst-ionomer interface was investigated using polymer dispersion spin-coated on model Si and Ag substrates. From the grazing incident x-ray scattering study, phenomenon like parallel polymer chain alignment with respect to the surface at a higher ionomer thickness and their variation with hydration and type of substrate was investigated. With increasing thickness, the film formation undergoes two transition regimes: formation of crystalline polymer domains followed by intra-molecular alignment of CF2 units within the polymer chain. It was also found that the silver surface is interacting strongly with the polymer. From the knowledge gained, it is recommended to design the…
Advisors/Committee Members: Herring, Andrew M. (advisor), Koh, Carolyn A. (Carolyn Ann) (committee member), Krebs, Melissa D. (committee member), Samaniuk, Joseph R. (committee member), Pivovar, Bryan S. (committee member), Trewyn, Brian (committee member).
Subjects/Keywords: catalyst-ionomer interaction; fuel cells; segmented fuel cell; CO2 absorption; anion exchange membranes; perfluorinated polymer
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APA (6th Edition):
Divekar, A. G. (2020). Advanced perfluorinated anion exchange membrane polymers and their issues in electrochemical conversion devices. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/174176
Chicago Manual of Style (16th Edition):
Divekar, Ashutosh G. “Advanced perfluorinated anion exchange membrane polymers and their issues in electrochemical conversion devices.” 2020. Doctoral Dissertation, Colorado School of Mines. Accessed January 22, 2021.
http://hdl.handle.net/11124/174176.
MLA Handbook (7th Edition):
Divekar, Ashutosh G. “Advanced perfluorinated anion exchange membrane polymers and their issues in electrochemical conversion devices.” 2020. Web. 22 Jan 2021.
Vancouver:
Divekar AG. Advanced perfluorinated anion exchange membrane polymers and their issues in electrochemical conversion devices. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2020. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/11124/174176.
Council of Science Editors:
Divekar AG. Advanced perfluorinated anion exchange membrane polymers and their issues in electrochemical conversion devices. [Doctoral Dissertation]. Colorado School of Mines; 2020. Available from: http://hdl.handle.net/11124/174176
26.
Shokeen, Vishal.
Ultrafast magnetization dynamics in ferromagnetic transition metals : a study of spins thermalization induced by femtosecond optical pulses and of coupled oscillators excited by picosecond acoustic pulses : Dynamique d'aimantation ultra-rapide dans les métaux de transition ferromagnétiques : une étude de la thermalisation des spins induite par impulsions optiques femtosecondes et des oscillateurs couplés excités par impulsions acoustiques picosecondes.
Degree: Docteur es, Physique, 2016, Université de Strasbourg
URL: http://www.theses.fr/2016STRAE035
► Dans cette thèse, nous avons étudié la dynamique d'aimantation selon deux échelles de temps en utilisant la technique pompe-sonde magnéto-optique résolue en temps. A l'échelle…
(more)
▼ Dans cette thèse, nous avons étudié la dynamique d'aimantation selon deux échelles de temps en utilisant la technique pompe-sonde magnéto-optique résolue en temps. A l'échelle de la picoseconde, la précession de l'aimantation est induite par des impulsions acoustiques dans des structures multicouches composées de deux couches ferromagnétique séparées par une couche métallique (Ni/Au/Py) avec différentes épaisseurs. La synchronisation de la précession des couches ferromagnétiques couplées a été observée. La modification de la précession de l'aimantation d'une couche de Ni est due l'interaction d'échange intercouche avec la couche Py. A l'échelle de 50fs, nous avons étudié la dynamique magnéto-optique cohérente, athermale, thermale et la relaxation des charges et des spins dans (Ni, Co et Fe) par impulsions de 11 fs dans un régime de faible perturbation. L'interaction spin-orbite et l'interaction d'échange jouent un rôle significatif dans la désaimantation ultrarapide.
In this thesis, we have investigated the magnetization dynamics at picosecond and femtosecond time scale using time resolved magneto-optical pump probe technique. At picosecond time scale, the magnetization precession is induced by ultrafast acoustic pulses in a three layered structure with two ferromagnetic layers separated by varying thickness of metallic spacer layer (Ni/Au/Py). The magnetization precession dynamics of the Ni layer is modified due to the interlayer exchange interaction with the Py layer and the synchronized precession of the coupied ferromagnetic layers has been observed. At the timescale of 50fs, coherent magneto-optical, non-thermal, thermal and relaxation dynamics of charges and spins in ferromagnetic transition metals (Ni, Co and Fe) is studied by using 11fs optical pulses in a very low perturbation regime. The spin orbit interaction and exchange interaction play a significant role in the demagnetization of the ferromagnetic metals induced by femtosecond pulses.
Advisors/Committee Members: Bigot, Jean-Yves (thesis director).
Subjects/Keywords: Dynamique magnéto-optique; Dynamique athermale; Désaimantation ultrarapide; Interlayer exchange coupling; Magneto-accoustics; Synchronized precession; Coherent magneto-optical; Spin orbit and exchange interaction; Non-thermal dynamics; Ultrafast demagnetization; 539.1
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Manager
APA (6th Edition):
Shokeen, V. (2016). Ultrafast magnetization dynamics in ferromagnetic transition metals : a study of spins thermalization induced by femtosecond optical pulses and of coupled oscillators excited by picosecond acoustic pulses : Dynamique d'aimantation ultra-rapide dans les métaux de transition ferromagnétiques : une étude de la thermalisation des spins induite par impulsions optiques femtosecondes et des oscillateurs couplés excités par impulsions acoustiques picosecondes. (Doctoral Dissertation). Université de Strasbourg. Retrieved from http://www.theses.fr/2016STRAE035
Chicago Manual of Style (16th Edition):
Shokeen, Vishal. “Ultrafast magnetization dynamics in ferromagnetic transition metals : a study of spins thermalization induced by femtosecond optical pulses and of coupled oscillators excited by picosecond acoustic pulses : Dynamique d'aimantation ultra-rapide dans les métaux de transition ferromagnétiques : une étude de la thermalisation des spins induite par impulsions optiques femtosecondes et des oscillateurs couplés excités par impulsions acoustiques picosecondes.” 2016. Doctoral Dissertation, Université de Strasbourg. Accessed January 22, 2021.
http://www.theses.fr/2016STRAE035.
MLA Handbook (7th Edition):
Shokeen, Vishal. “Ultrafast magnetization dynamics in ferromagnetic transition metals : a study of spins thermalization induced by femtosecond optical pulses and of coupled oscillators excited by picosecond acoustic pulses : Dynamique d'aimantation ultra-rapide dans les métaux de transition ferromagnétiques : une étude de la thermalisation des spins induite par impulsions optiques femtosecondes et des oscillateurs couplés excités par impulsions acoustiques picosecondes.” 2016. Web. 22 Jan 2021.
Vancouver:
Shokeen V. Ultrafast magnetization dynamics in ferromagnetic transition metals : a study of spins thermalization induced by femtosecond optical pulses and of coupled oscillators excited by picosecond acoustic pulses : Dynamique d'aimantation ultra-rapide dans les métaux de transition ferromagnétiques : une étude de la thermalisation des spins induite par impulsions optiques femtosecondes et des oscillateurs couplés excités par impulsions acoustiques picosecondes. [Internet] [Doctoral dissertation]. Université de Strasbourg; 2016. [cited 2021 Jan 22].
Available from: http://www.theses.fr/2016STRAE035.
Council of Science Editors:
Shokeen V. Ultrafast magnetization dynamics in ferromagnetic transition metals : a study of spins thermalization induced by femtosecond optical pulses and of coupled oscillators excited by picosecond acoustic pulses : Dynamique d'aimantation ultra-rapide dans les métaux de transition ferromagnétiques : une étude de la thermalisation des spins induite par impulsions optiques femtosecondes et des oscillateurs couplés excités par impulsions acoustiques picosecondes. [Doctoral Dissertation]. Université de Strasbourg; 2016. Available from: http://www.theses.fr/2016STRAE035
RMIT University
27.
Zhang, J.
Understanding host community attitudes towards tourism and resident-tourist interaction: a socio-behavioural study of Melbourne’s urban-rural fringe.
Degree: 2008, RMIT University
URL: http://researchbank.rmit.edu.au/view/rmit:161793
► The fast development of the tourism industry has created both positive and negative impacts on host communities. Reacting to these impacts, host residents hold various…
(more)
▼ The fast development of the tourism industry has created both positive and negative impacts on host communities. Reacting to these impacts, host residents hold various attitudes towards tourism and tourists. It has come to common agreement that a supportive host community plays a vital role in the successful and long-term development of community tourism. In order to explain the antecedents of community attitudes towards tourism, researchers have investigated the topic from both the extrinsic perspective (such as stage-based models) and the intrinsic perspective (such as the Social Exchange Theory). Nevertheless, there are still several important research gaps and deficiencies within the existing literature. First, the influence of psychological factors (personality) on attitudes towards tourism is somewhat neglected. Second, when examining the relationship between community attitudes towards tourism and the influential factors, the majority of previous studies do not distinguish the orthogonal dimensions of attitudes (such as positive dimension and negative dimension). Third, the existing literature has not addressed the issue of whether specific attitudes towards tourism will lead to a corresponding behaviour when interacting with tourists, and what other factors are determinant in host-guest interactive behaviour. Aiming to address such research gaps and deficiencies, this study has a major objective of developing a theoretical model (encompassing attitude element) to understand the antecedents of host-guest interaction. A quantitative approach was employed for the entire project. A self-administrated questionnaire survey was used to collect primary data. A total of 878 useful questionnaires were returned for analyses. Stratification sampling methods were utilized in communities where population database was accessible, while random sampling methods were used in other communities. The findings from this study confirmed the two major hypotheses in terms of community attitudes towards tourism. First, there was a significant relationship between an individual’s personality and his/her attitudes towards tourism. Residents being high on Openness, Conscientiousness, Extraversion and Agreeableness traits and low on the Neuroticism trait tended to be more positive towards tourism than their counterparts. Second, while some factors were found to be influential on both positive and negative dimensions of attitudes towards tourism, others only demonstrated influences on one dimension. The Resident-Tourist Interaction Model developed in this study provided a comprehensive theoretical framework in modelling and predicting host residents’ interactive behaviour towards tourists. Drawing on the evaluation results of three leading behavioural theories belonging to the school of cognition, the Model identified attitudinal, volitional, social, motivating and habitual factors for the prediction of resident-tourist interactive behaviour. Motivating factor (intention) was the critical and immediate element for…
Subjects/Keywords: Fields of Research; community attitudes; tourism; host-guest interaction; TRA; TPB; TIB; urban fringe; Five factor model; personality; social exchange theory
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APA (6th Edition):
Zhang, J. (2008). Understanding host community attitudes towards tourism and resident-tourist interaction: a socio-behavioural study of Melbourne’s urban-rural fringe. (Thesis). RMIT University. Retrieved from http://researchbank.rmit.edu.au/view/rmit:161793
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Zhang, J. “Understanding host community attitudes towards tourism and resident-tourist interaction: a socio-behavioural study of Melbourne’s urban-rural fringe.” 2008. Thesis, RMIT University. Accessed January 22, 2021.
http://researchbank.rmit.edu.au/view/rmit:161793.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zhang, J. “Understanding host community attitudes towards tourism and resident-tourist interaction: a socio-behavioural study of Melbourne’s urban-rural fringe.” 2008. Web. 22 Jan 2021.
Vancouver:
Zhang J. Understanding host community attitudes towards tourism and resident-tourist interaction: a socio-behavioural study of Melbourne’s urban-rural fringe. [Internet] [Thesis]. RMIT University; 2008. [cited 2021 Jan 22].
Available from: http://researchbank.rmit.edu.au/view/rmit:161793.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zhang J. Understanding host community attitudes towards tourism and resident-tourist interaction: a socio-behavioural study of Melbourne’s urban-rural fringe. [Thesis]. RMIT University; 2008. Available from: http://researchbank.rmit.edu.au/view/rmit:161793
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
28.
Yang, Chin-ann.
The study of work choice motivation and workers' interaction in influencing job attitude and work performance for contingent workers.
Degree: PhD, Human Resource Management, 2009, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0714109-160415
► The aim of this dissertation was (1) to examine the work choice motivation for accepting the contingent employment in relation to various outcomes (job satisfaction,…
(more)
▼ The aim of this dissertation was (1) to examine the work choice motivation for accepting the contingent employment in relation to various outcomes (job satisfaction, job involvement, and psychological contract) and the effect on work performance (obedience, and work expectation), and (2) to test whether workersâ
interaction may assist in explaining difference between the various outcome and the effect on work performance. The results of this study challenged earlier assumptions on the importance of volition in temporary work research. Analyses were based on a sample of 415 contingent workers from various organizations and types of the contingent employment.
The most striking findings were that work choice motivation did not consistently associate with favorable outcomes and the effect on work performance, and that the relationship between work choice motivations related to work performance outcomes were non-significant. By way of contrast, self-fulfilling motive has positively effects on job satisfaction and job involvement, work-life balance motive and self-constrain motive have positive effect on psychological contract, and work control motive has negative effect on job involvement, and psychological contract.
Also, this dissertation established that workersâ
interaction may have potential to improve the variations on predictions. The result showed that task-related
interaction between standard and contingent workers has positive effect on job satisfaction, job involvement, work expectation, and obedience. Moreover, the non-task related
interaction has negative effect on obedience.
The
interaction effects of work choice motivation and workersâ
interaction on job attitudes and work performance were also examined in this study. The result shows that the
interaction between work-life balance motive and non-task related
interaction has positive effect on psychological contract. Moreover, the
interaction effect of self-constrain motive and non-task related
interaction also has positive effect on psychological contract. The implications were also discussed in this study.
Advisors/Committee Members: Shyh-jer Chen (chair), Ing Chung Huang (committee member), Yuan-duen Lee (chair), Lai-ching Huang (chair), Jin Feng Uen (chair), Pei-wen Huang (chair), Kun-yuan Chung (chair).
Subjects/Keywords: social exchange theory; work performance; self-determination theory; contingent workers; work choice motivation; workers' interaction; theory of planned behavior; job attitude
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APA (6th Edition):
Yang, C. (2009). The study of work choice motivation and workers' interaction in influencing job attitude and work performance for contingent workers. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0714109-160415
Chicago Manual of Style (16th Edition):
Yang, Chin-ann. “The study of work choice motivation and workers' interaction in influencing job attitude and work performance for contingent workers.” 2009. Doctoral Dissertation, NSYSU. Accessed January 22, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0714109-160415.
MLA Handbook (7th Edition):
Yang, Chin-ann. “The study of work choice motivation and workers' interaction in influencing job attitude and work performance for contingent workers.” 2009. Web. 22 Jan 2021.
Vancouver:
Yang C. The study of work choice motivation and workers' interaction in influencing job attitude and work performance for contingent workers. [Internet] [Doctoral dissertation]. NSYSU; 2009. [cited 2021 Jan 22].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0714109-160415.
Council of Science Editors:
Yang C. The study of work choice motivation and workers' interaction in influencing job attitude and work performance for contingent workers. [Doctoral Dissertation]. NSYSU; 2009. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0714109-160415
Universidade do Rio Grande do Sul
29.
Franco, Márcia Häfele Islabão.
Mecanismo de interação entre agentes : construção e avaliação de trocas sociais.
Degree: 2008, Universidade do Rio Grande do Sul
URL: http://hdl.handle.net/10183/70700
► Esta tese apresenta a formalização, construção e validação experimental de um mecanismo de interação entre agentes baseado em valores de troca. Através do mecanismo de…
(more)
▼ Esta tese apresenta a formalização, construção e validação experimental de um mecanismo de interação entre agentes baseado em valores de troca. Através do mecanismo de interação, os agentes são capazes de estabelecer, avaliar e regular os balanços de troca de suas interações, com o objetivo de alcançar resultados que eles valorizem, i.e., considerem adequados. Na formalização do mecanismo de interação são considerados diversos aspectos abordados nas Ciências Sociais, na Psicologia e em Teorias Utilitaristas. No mecanismo são observados, igualmente, os aspectos sociais e psicológicos que podem influenciar os resultados das interações entre os agentes. Desse modo, o mecanismo leva em consideração que os agentes podem construir suas estratégias levando em consideração as informações relacionadas com o “poder social” e as “atitudes” de interação. No mecanismo de interação recorre-se aos diálogos de argumentação com a finalidade de permitir que os agentes possam influenciar os seus parceiros em relação ao estabelecimento de acordos sobre os serviços e aos valores de troca envolvidos nas interações. Na validação experimental, o cenário utilizado foi o dos “Robôs Coletores de Lixo em Marte”. Através dos resultados obtidos, pode-se observar que o mecanismo de interação considera os valores de troca no processo de formação da cooperação, auxiliando os agentes na escolha de futuros parceiros.
This thesis presents the formalization, construction and validation of an interaction mechanism based on exchange values. Through the interaction mechanism, the agents are capable to establish, to evaluate and to regulate the balances of exchange of their interactions, with the objective of reaching the results that they consider adequate. In the formalization of the mechanism several aspects of Social Sciences, Psychology and Utilitarian Theories are considered. In the mechanism are observed the social and psychological aspects that can influence the results of the interactions between the agents. In this manner, the mechanism considers that the agents can build their strategies considering the information related to the social power and to interaction attitudes. In the mechanism the argument dialogs are used with the purpose to allow the agents to influence their partners in relation to the establishment of agreements about the services and about the exchange values involved in the interactions. In the validation, the scenario used was the “Garbage Collector Robots in Mars”. Through the obtained results, it was possible to observe that the interaction mechanism considers the values of exchange in the process of formation of the cooperation, helping the agents to choose their future partners.
Advisors/Committee Members: Costa, Antonio Carlos da Rocha.
Subjects/Keywords: Interaction mechanism; Inteligência artificial; Dialogues of argumentation; Sistemas multiagentes; Exchange values; Sociedades artificiais; Social power; Attitudes
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Franco, M. H. I. (2008). Mecanismo de interação entre agentes : construção e avaliação de trocas sociais. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/70700
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Franco, Márcia Häfele Islabão. “Mecanismo de interação entre agentes : construção e avaliação de trocas sociais.” 2008. Thesis, Universidade do Rio Grande do Sul. Accessed January 22, 2021.
http://hdl.handle.net/10183/70700.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Franco, Márcia Häfele Islabão. “Mecanismo de interação entre agentes : construção e avaliação de trocas sociais.” 2008. Web. 22 Jan 2021.
Vancouver:
Franco MHI. Mecanismo de interação entre agentes : construção e avaliação de trocas sociais. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2008. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/10183/70700.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Franco MHI. Mecanismo de interação entre agentes : construção e avaliação de trocas sociais. [Thesis]. Universidade do Rio Grande do Sul; 2008. Available from: http://hdl.handle.net/10183/70700
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
30.
Patino, Marlene Idy.
Plasma Inter-Particle and Particle-Wall Interactions.
Degree: Aerospace Engineering, 2017, UCLA
URL: http://www.escholarship.org/uc/item/6ds1j386
► An improved understanding of plasma inter-particle and particle-wall interactions is critical to the advancement of plasma devices used for space electric propulsion, fusion, high-power communications,…
(more)
▼ An improved understanding of plasma inter-particle and particle-wall interactions is critical to the advancement of plasma devices used for space electric propulsion, fusion, high-power communications, and next-generation energy systems. Two interactions of particular importance are (1) ion-atom collisions in the plasma bulk and (2) secondary electron emission from plasma-facing materials.For ion-atom collisions, interactions between fast ions and slow atoms are commonly dominated by charge-exchange and momentum-exchange collisions that are important to understanding the performance and behavior of many plasma devices. To investigate this behavior, this work developed a simple, well-characterized experiment that accurately measures the effects of high energy xenon ions incident on a background of xenon neutral atoms. By comparing these results to both analytical and computational models of ion-atom interactions, we discovered the importance of (1) accurately treating the differential cross-sections for momentum-exchange and charge-exchange collisions over all neutral background pressures, and (2) commonly overlooked interactions, including ion-induced electron emission and neutral-neutral ionization collisions, at high pressures. Data provide vital information on the angular scattering distributions of charge-exchange and momentum-exchange ions at 1.5 keV relevant for ion thrusters, and serve as canonical data for validation of plasma models.This work also investigates electron-induced secondary electron emission behavior relevant to materials commonly considered for plasma thrusters, fusion systems, and many other plasma devices. For such applications, secondary electron emission can alter the sheath potential, which can significantly affect device performance and life. Secondary electron emission properties were measured for materials that are critical to the efficient operation of many plasma devices, including: graphite (for tokamaks, ion thrusters, and traveling wave tubes), lithium (for tokamak walls), tungsten (the most promising material for future tokamaks such as ITER), and nickel (for plasma-enhanced chemistry). Measurements were made for incident electron energies up to 1.5 keV and angles between 0 and 78�.The most significant results from these measurements are as follows: (1) first-ever measurements of naturally-forming tungsten fuzz show a more than 40% reduction in secondary electron emission and an independence on incidence angle; (2) original measurements of lithium oxide show a 2x and 6x increase in secondary electron emission for 17% and 100% oxidation; and (3) unique measurements of Ni(110) single crystal show extrema in secondary electron emission when incidence angle is varied and an up to 36% increase at 0� over polycrystalline nickel. Each of these results are important discoveries for improving plasma devices. For example, from (1), the growth of tungsten fuzz in tokamaks is desirable for minimizing adverse secondary electron emission effects. From (2), the opposite is true for tokamaks…
Subjects/Keywords: Aerospace engineering; Physics; charge-exchange; ion-induced electron emission; ion-neutral collision; plasma material interaction; plasma physics; secondary electron emission
Record Details
Similar Records
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Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Patino, M. I. (2017). Plasma Inter-Particle and Particle-Wall Interactions. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/6ds1j386
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Patino, Marlene Idy. “Plasma Inter-Particle and Particle-Wall Interactions.” 2017. Thesis, UCLA. Accessed January 22, 2021.
http://www.escholarship.org/uc/item/6ds1j386.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Patino, Marlene Idy. “Plasma Inter-Particle and Particle-Wall Interactions.” 2017. Web. 22 Jan 2021.
Vancouver:
Patino MI. Plasma Inter-Particle and Particle-Wall Interactions. [Internet] [Thesis]. UCLA; 2017. [cited 2021 Jan 22].
Available from: http://www.escholarship.org/uc/item/6ds1j386.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Patino MI. Plasma Inter-Particle and Particle-Wall Interactions. [Thesis]. UCLA; 2017. Available from: http://www.escholarship.org/uc/item/6ds1j386
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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Open Access Theses and Dissertations
