You searched for subject:(Long term robot deployment).
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Georgia Tech
1.
Notomista, Gennaro.
Long-duration robot autonomy: From control algorithms to robot design.
Degree: PhD, Mechanical Engineering, 2020, Georgia Tech
URL: http://hdl.handle.net/1853/63700 
► The transition that robots are experiencing from controlled and often static working environments to unstructured and dynamic settings is unveiling the potential fragility of the…
(more)
▼ The transition that robots are experiencing from controlled and often static working environments to unstructured and dynamic settings is unveiling the potential fragility of
the design and control techniques employed to build and program them, respectively. A paramount of example of a discipline that, by construction, deals with robots operating under
unknown and ever-changing conditions is
long-duration
robot autonomy. In fact, during
long-
term deployments, robots will find themselves in environmental scenarios which were not planned and accounted for during the design phase. These operating conditions offer a variety of challenges which are not encountered in any other discipline of robotics. This thesis presents control-theoretic techniques and mechanical design principles to be employed while conceiving, building, and programming robotic systems meant to remain operational over sustained amounts of time.
Long-duration autonomy is studied and analyzed from two different, yet complementary, perspectives: control algorithms and
robot design. In the context of the former, the persistification of robotic tasks is presented. This consists of an optimization-based control framework which allows robots to remain operational over time horizons that are much longer than the ones which would be allowed by the limited
resources of energy with which they can ever be equipped. As regards the mechanical design aspect of
long-duration
robot autonomy, in the second part of this thesis, the SlothBot, a slow-paced solar-powered wire-traversing
robot, is presented. This
robot embodies the design principles required by an autonomous robotic system 1in order to remain functional for truly
long periods of time, including energy efficiency, design simplicity, and fail-safeness. To conclude, the development of a robotic platform which stands at the intersection of design and control for
long-duration autonomy is described. A class of vibration-driven robots, the brushbots, are analyzed both from a mechanical design perspective, and in terms of interaction control capabilities with the environment in which they are deployed.
Advisors/Committee Members: Egerstedt, Magnus (advisor), Book, Wayne (committee member), Coogan, Samuel (committee member), Hutchinson, Seth (committee member), Mazumdar, Anirban (committee member), Schwager, Mac (committee member).
Subjects/Keywords: Robotics; Control theory; Long-term robot deployment
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APA (6th Edition):
Notomista, G. (2020). Long-duration robot autonomy: From control algorithms to robot design. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/63700
Chicago Manual of Style (16th Edition):
Notomista, Gennaro. “Long-duration robot autonomy: From control algorithms to robot design.” 2020. Doctoral Dissertation, Georgia Tech. Accessed March 08, 2021.
http://hdl.handle.net/1853/63700.
MLA Handbook (7th Edition):
Notomista, Gennaro. “Long-duration robot autonomy: From control algorithms to robot design.” 2020. Web. 08 Mar 2021.
Vancouver:
Notomista G. Long-duration robot autonomy: From control algorithms to robot design. [Internet] [Doctoral dissertation]. Georgia Tech; 2020. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1853/63700.
Council of Science Editors:
Notomista G. Long-duration robot autonomy: From control algorithms to robot design. [Doctoral Dissertation]. Georgia Tech; 2020. Available from: http://hdl.handle.net/1853/63700
NSYSU
2.
Chuang, Chieh-an.
Efficient eNB Deployment Strategy for Heterogeneous Cells in 4G LTE Systems.
Degree: Master, Computer Science and Engineering, 2014, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804114-125938
► Base station deployment is critical for a cellular communication system because it determines the system construction cost and service quality to users. Conventional 2G and…
(more)
▼ Base station
deployment is critical for a cellular communication system because it
determines the system construction cost and service quality to users. Conventional 2G and
3G systems assume that base stations are identical in the sense that they have the
similar coverage range. For 4G systems, LTE introduces the concept of heterogeneous base
stations (also called eNBs), which can provide different sizes of coverage range.
Given the user distribution in a service area, the problem of deploying heterogeneous
eNBs is NP-hard. Therefore, we propose a four-stage eNB
deployment strategy to
efficiently solve this problem. Our strategy first employs a geometric approach to
provide the basic coverage to the service area and then adjusts the cell range in order
to meet the power and bandwidth constraints on each eNB. Simulation results verify that
the proposed strategy can significantly save the system construction cost while balancing
the loads of deployed eNBs.
Advisors/Committee Members: You-Chiun Wang (committee member), Wei-Kuang Lai (chair), Jen-Jee Chen (chair), Chung-Nan Lee (chair).
Subjects/Keywords: heterogeneous network (HetNet); cell planning; long term evolution (LTE); network management; base station deployment
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APA (6th Edition):
Chuang, C. (2014). Efficient eNB Deployment Strategy for Heterogeneous Cells in 4G LTE Systems. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804114-125938
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):
Chuang, Chieh-an. “Efficient eNB Deployment Strategy for Heterogeneous Cells in 4G LTE Systems.” 2014. Thesis, NSYSU. Accessed March 08, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804114-125938.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chuang, Chieh-an. “Efficient eNB Deployment Strategy for Heterogeneous Cells in 4G LTE Systems.” 2014. Web. 08 Mar 2021.
Vancouver:
Chuang C. Efficient eNB Deployment Strategy for Heterogeneous Cells in 4G LTE Systems. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Mar 08].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804114-125938.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chuang C. Efficient eNB Deployment Strategy for Heterogeneous Cells in 4G LTE Systems. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804114-125938
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
3.
Lee, Shih.
Efficient Small Cell Deployment Strategy to Improve Network Performance and Energy Utilization in LTE Networks.
Degree: Master, Computer Science and Engineering, 2016, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-131500
► Mobile communication is important and the trend of future. Homogeneous networks are used by 2G and 3G. Heterogeneous networks are introduced to cellular systems to…
(more)
▼ Mobile communication is important and the trend of future. Homogeneous networks are used by 2G and 3G. Heterogeneous networks are introduced to cellular systems to enhance coverage, save energy, reduce budget and improve capacity. Deploy different kind of Base Station is profitable. The problem of base station
deployment has proven to be NP-hard. An excellent planning can improve network performance effectively. In addition, energy saving is an important issue along with the increase of network traffic as well as limited resources.
Many researches deploys the Macro-cell and small-cell in the environment simultaneously. However, in most cases, when the provider deploys the small-cell for network enhancement, they add the small-cell into an environment which has had several Macro-cell. As mentioned above, because of those reason, we focus on adding the small-cell flexibly with budgeted cell planning. We take into account the UE location and different base station and proposed the algorithm which combine K-Means and MDBSCA to achieve the objective of high-satisfied rate. Moreover, we adjust the power emission to attain the target of low power consumption and high-energy efficiency.
The performance improvement of the proposed algorithm has been validated by simulation result. Compare with K-means and DBSCAN, the proposed method can decrease the power consumption by 34% at most. In regards to UE satisfied ratio, the improved rate is 36% at most. The utilized rate rise to 75% at best in terms of energy efficiency.
Advisors/Committee Members: Jen-Jee Chen (chair), You-Chiun Wang (committee member), Chung-Nan Lee (chair), Meng-Hsun Tsai (chair).
Subjects/Keywords: Long Term Evolution; Energy Saving; Cellular Network Planning; LTE; Heterogeneous Networks; Cell Deployment
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APA ·
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Manager
APA (6th Edition):
Lee, S. (2016). Efficient Small Cell Deployment Strategy to Improve Network Performance and Energy Utilization in LTE Networks. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-131500
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):
Lee, Shih. “Efficient Small Cell Deployment Strategy to Improve Network Performance and Energy Utilization in LTE Networks.” 2016. Thesis, NSYSU. Accessed March 08, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-131500.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lee, Shih. “Efficient Small Cell Deployment Strategy to Improve Network Performance and Energy Utilization in LTE Networks.” 2016. Web. 08 Mar 2021.
Vancouver:
Lee S. Efficient Small Cell Deployment Strategy to Improve Network Performance and Energy Utilization in LTE Networks. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Mar 08].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-131500.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lee S. Efficient Small Cell Deployment Strategy to Improve Network Performance and Energy Utilization in LTE Networks. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-131500
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Queensland University of Technology
4.
Lowry, Stephanie Margaret.
Visual place recognition for persistent robot navigation in changing environments.
Degree: 2014, Queensland University of Technology
URL: https://eprints.qut.edu.au/79404/
► This thesis demonstrates that robots can learn about how the world changes, and can use this information to recognise where they are, even when the…
(more)
▼ This thesis demonstrates that robots can learn about how the world changes, and can use this information to recognise where they are, even when the appearance of the environment has changed a great deal. The ability to localise in highly dynamic environments using vision only is a key tool for achieving long-term, autonomous navigation in unstructured outdoor environments. The proposed learning algorithms are designed to be unsupervised, and can be generated by the robot online in response to its observations of the world, without requiring information from a human operator or other external source.
Subjects/Keywords: Appearance-based localisation; Persistent robot navigation; Visual place recognition; Localisation; Long-term autonomy
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APA ·
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CSE |
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lowry, S. M. (2014). Visual place recognition for persistent robot navigation in changing environments. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/79404/
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):
Lowry, Stephanie Margaret. “Visual place recognition for persistent robot navigation in changing environments.” 2014. Thesis, Queensland University of Technology. Accessed March 08, 2021.
https://eprints.qut.edu.au/79404/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lowry, Stephanie Margaret. “Visual place recognition for persistent robot navigation in changing environments.” 2014. Web. 08 Mar 2021.
Vancouver:
Lowry SM. Visual place recognition for persistent robot navigation in changing environments. [Internet] [Thesis]. Queensland University of Technology; 2014. [cited 2021 Mar 08].
Available from: https://eprints.qut.edu.au/79404/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lowry SM. Visual place recognition for persistent robot navigation in changing environments. [Thesis]. Queensland University of Technology; 2014. Available from: https://eprints.qut.edu.au/79404/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Michigan Technological University
5.
Li, Bingxi.
Multi-robot Mission Planning with Energy Replenishment.
Degree: PhD, Department of Mechanical Engineering-Engineering Mechanics, 2018, Michigan Technological University
URL: https://digitalcommons.mtu.edu/etdr/738
► Success of numerous long-term robotic explorations in air, on the ground, and under water is dependent on the ability of the robots to operate…
(more)
▼ Success of numerous
long-
term robotic explorations in air, on the ground, and under water is dependent on the ability of the robots to operate for an extended period of time. The continuous operation of robots hinges on smart energy consumption and replenishment of the robots. This dissertation addresses the multi-
robot system continuous operation problem by developing two mission planning architectures regarding two types of energy replenishment, which can be adapted to different mission scenarios based on mission requirements and available resources.
The first type of energy replenishment utilizes static charging stations to provide a recharging opportunity to primary working robots, who can periodically revisit static charging stations to be recharged through the mission. The static energy replenishment mission planning method simultaneously generates energy efficient trajectories for multiple robots and schedules energy cycling using a Genetic Algorithm (GA). The mission planning method accounts for environmental obstacles, disturbances, and can adapt to priority search distribution.
The second energy replenishment approach extends working robots operation by deploying a team of mobile charging stations to rendezvous and charge working robots. A graph transformation method is developed for mobile charging stations to solve persistent operation problem of working robots with pre-defined trajectories. Consideration of dynamic currents effect and obstacles are integrated into the method. To optimize trajectories of both working robots and mobile charging stations, a GA based mission planning method is designed with the capability of re-planning to account for mission uncertainty.
Simulation validations are performed through solving
long-
term mission planning problems. A variety of real-world mission scenarios employing teams of underwater, aerial, and ground robots are simulated with multiple mission objectives under various environmental and
robot constraints. The effectiveness of both developed mission planning methods in area coverage, handling energy limitations, and mission constraints are discussed and analyzed by numerical studies.
Advisors/Committee Members: Nina Mahmoudian.
Subjects/Keywords: Mission planning; Multi-robot systems; Trajectory Optimization; Long-term autonomy; Energy replenishment; Mechanical Engineering
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APA ·
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MLA ·
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CSE |
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, B. (2018). Multi-robot Mission Planning with Energy Replenishment. (Doctoral Dissertation). Michigan Technological University. Retrieved from https://digitalcommons.mtu.edu/etdr/738
Chicago Manual of Style (16th Edition):
Li, Bingxi. “Multi-robot Mission Planning with Energy Replenishment.” 2018. Doctoral Dissertation, Michigan Technological University. Accessed March 08, 2021.
https://digitalcommons.mtu.edu/etdr/738.
MLA Handbook (7th Edition):
Li, Bingxi. “Multi-robot Mission Planning with Energy Replenishment.” 2018. Web. 08 Mar 2021.
Vancouver:
Li B. Multi-robot Mission Planning with Energy Replenishment. [Internet] [Doctoral dissertation]. Michigan Technological University; 2018. [cited 2021 Mar 08].
Available from: https://digitalcommons.mtu.edu/etdr/738.
Council of Science Editors:
Li B. Multi-robot Mission Planning with Energy Replenishment. [Doctoral Dissertation]. Michigan Technological University; 2018. Available from: https://digitalcommons.mtu.edu/etdr/738
6.
Chirila, Anda M.
Long-Term Potentiation of Glycinergic Synapses Triggered by
Interleukin-1β.
Degree: PhD, Molecular Pharmacology, Physiology, and
Biotechnology, 2014, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:419373/
► In the spinal cord dorsal horn, persistent changes in synaptic strength may contribute to nociceptive information processing and to pathological pain states. These changes overlap…
(more)
▼ In the spinal cord dorsal horn, persistent changes in
synaptic strength may contribute to nociceptive information
processing and to pathological pain states. These changes overlap
phenotypically and mechanistically with activity dependent forms of
synaptic plasticity characterized throughout the central nervous
system, and required for many behavioral adaptations, ranging from
learning and memory formation, to visual and somatosensory system
functional development and drug addiction. While
long-
term
potentiation (LTP) of glutamatergic and GABAergic synapses has been
extensively explored, the regulation of glycinergic synaptic
strength remains enigmatic. In the superficial dorsal horn,
glycinergic synapses provide crucial inhibitory control to
nociceptive output, and are essential for maintaining the
separation of touch and pain modalities. This thesis explores the
effects of the inflammatory cytokine interleukin-1β (IL-1β) on
glycinergic synaptic strength and provides the first evidence of
LTP at mammalian glycinergic synapses. I report that, in the
superficial dorsal horn, glycinergic synapses on inhibitory
GABAergic neurons exhibit a postsynaptic form of LTP (GlyR LTP),
triggered rapidly after exposure to IL-1β. Furthermore, this form
of LTP may result from an increase in the number of postsynaptic
glycine receptors, and requires a rise in intracellular Ca2+ as
well as p38 MAPK activity. IL-1β is released in the periphery and
spinal cord during inflammation, and induces a nociceptive response
when administered intrathecally. Notably, I found that
formalin-induced peripheral inflammation in vivo potentiates
glycinergic synapses on GABAergic dorsal horn neurons, suggesting
that GlyR LTP is triggered during inflammatory peripheral injury.
These results define a novel mechanism available to disinhibit
neurons transmitting nociceptive information and may represent a
useful therapeutic target for the treatment of pain. Lastly, this
study explores the functional role of inhibitory interneurons
exhibiting GlyR LTP in nociceptive circuits and pain processing in
vitro, using optogenetic strategies. GlyR LTP adds an additional
level of complexity to the functional connectivity map of the
dorsal horn and may take us one step closer to deciphering the
neural code for pain processing at the spinal level. Reversing or
preventing this cytokine-induced synaptic modification may
represent a useful therapeutic entry point for pain
control.
Advisors/Committee Members: Kauer, Julie (Director), Berson, David (Reader), Oancea, Elena (Reader), Zimmerman, Anita (Reader), Turrigiano, Gina (Reader).
Subjects/Keywords: Long-term potentiation
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APA ·
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Manager
APA (6th Edition):
Chirila, A. M. (2014). Long-Term Potentiation of Glycinergic Synapses Triggered by
Interleukin-1β. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:419373/
Chicago Manual of Style (16th Edition):
Chirila, Anda M. “Long-Term Potentiation of Glycinergic Synapses Triggered by
Interleukin-1β.” 2014. Doctoral Dissertation, Brown University. Accessed March 08, 2021.
https://repository.library.brown.edu/studio/item/bdr:419373/.
MLA Handbook (7th Edition):
Chirila, Anda M. “Long-Term Potentiation of Glycinergic Synapses Triggered by
Interleukin-1β.” 2014. Web. 08 Mar 2021.
Vancouver:
Chirila AM. Long-Term Potentiation of Glycinergic Synapses Triggered by
Interleukin-1β. [Internet] [Doctoral dissertation]. Brown University; 2014. [cited 2021 Mar 08].
Available from: https://repository.library.brown.edu/studio/item/bdr:419373/.
Council of Science Editors:
Chirila AM. Long-Term Potentiation of Glycinergic Synapses Triggered by
Interleukin-1β. [Doctoral Dissertation]. Brown University; 2014. Available from: https://repository.library.brown.edu/studio/item/bdr:419373/
Queensland University of Technology
7.
Chen, Zetao.
Biologically-inspired place recognition with neural networks.
Degree: 2016, Queensland University of Technology
URL: https://eprints.qut.edu.au/98550/
► This thesis explores two aspects of biologically inspired methods for place recognition, a key component of navigation. The first key theme is to explore the…
(more)
▼ This thesis explores two aspects of biologically inspired methods for place recognition, a key component of navigation. The first key theme is to explore the multi-scale mapping principles inspired by the recent discovery of overlapping, multi-scale spatial maps in the rodent brain, while the second develops biologically inspired Convolutional Neural Networks (CNNs) for place recognition. We presented a series of studies comprehensively demonstrating for the first time how both a rodent brain-inspired multi-scale mapping system and CNN-based techniques enable state of the art place recognition performance.
Subjects/Keywords: Biologically inspired robotics; Place recognition; Robot localization; Long-term autonomy; SLAM; Convolutional neural network; Deep learning; Grid cells; Metric learning
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APA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chen, Z. (2016). Biologically-inspired place recognition with neural networks. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/98550/
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):
Chen, Zetao. “Biologically-inspired place recognition with neural networks.” 2016. Thesis, Queensland University of Technology. Accessed March 08, 2021.
https://eprints.qut.edu.au/98550/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Zetao. “Biologically-inspired place recognition with neural networks.” 2016. Web. 08 Mar 2021.
Vancouver:
Chen Z. Biologically-inspired place recognition with neural networks. [Internet] [Thesis]. Queensland University of Technology; 2016. [cited 2021 Mar 08].
Available from: https://eprints.qut.edu.au/98550/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen Z. Biologically-inspired place recognition with neural networks. [Thesis]. Queensland University of Technology; 2016. Available from: https://eprints.qut.edu.au/98550/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
8.
Vaz, Filipe José Antunes Silva Moreno.
Technical, financial and environmental evaluation of 4G long term evolution: advanced with femtocell base stations.
Degree: 2012, RCAAP
URL: https://www.rcaap.pt/detail.jsp?id=oai:repositorio.iscte-iul.pt:10071/7979
► Mestrado em Engenharia de Telecomunicações e Informática
Recent advances in mobile communication technology have allowed for considerable growth both in traffic and user numbers. However,…
(more)
▼ Mestrado em Engenharia de Telecomunicações e Informática
Recent advances in mobile communication technology have allowed for considerable
growth both in traffic and user numbers. However, in order to maintain acceptable quality of
experience and service levels with increasing network capacity requirements, a mobile
communications operator is challenged with high investment costs and high operating costs.
Cost effectiveness and environmental sustainability are two major factors a mobile
telecommunications operator must take into account in order to maintain its network planning
techniques ready for the accelerated growth of traffic in future mobile networks. With the
incoming LTE-Advanced system and with the increasing popularity of femtocells, it becomes
necessary to evaluate and quantify the economic viability and sustainability of this new type
of base station when used as a standalone deployment option, as well as when used in a two-tier network.
Therefore, different cases were used with a deployment method based on capacity
used with a varying non-uniform traffic distribution in order to assess the future resistance
and flexibility of this proposed solution. A comparison was made between macro cell
coverage only, full femtocell coverage and a two-tier joint solution.
Our study has concluded that for low capacity demands, the best approach is a two-tier network with femtocells used for indoor backhaul. A joint solution also allows for the
cost-effective resolution of indoor coverage issues. According to our future capacity
requirements projected, it has been concluded that a full femtocell deployment, by far, the
most economically viable option.
A method for the quantification and suppression of carbon emissions due to energy
consumption is also proposed, through which we studied and estimated the price for the
achievement of a zero carbon emissions network.
Os recentes avanços na tecnologia de comunicações móveis têm permitido um
crescimento considerável da indústria, tanto em termos de tráfego como em número de
clientes. No entanto, para conseguir manter uma qualidade de experiência aceitável e com
elevada qualidade de serviço, um operador de comunicações móveis depara-se com elevados
custos de investimento e operação.
A eficácia em termos de custos e a pegada ambiental são dois factores que, entre
outros, um operador de telecomunicações móveis deve ter em conta de modo a manter as suas
técnicas de planeamento de rede preparadas para o acelerado crescimento do tráfego nas redes
móveis do futuro. Com a chegada próxima do LTE-Advanced e com a crescente popularidade
de femtocells, torna-se necessário avaliar e quantificar a viabilidade económica e o potencial
de poupança de energia deste novo tipo de estação de base quando utilizado como uma opção
de implantação autónoma, ou quando utilizado para suporte de uma rede de macro células.
Dessa forma, foram dimensionados diferentes casos de implementação baseados nos
requisitos de capacidade. Foi…
Advisors/Committee Members: Sebastião, Pedro Joaquim Amaro, Correia, Américo Manuel Carapeto.
Subjects/Keywords: Femtocell; Carbon footprint; Heterogeneous network; Environmental sustainability; Cost analysis; Split spectrum; Common spectrum; Deployment; Capacity; Long term evolution – advanced, carbon sequestration; 4G; Pegada ambiental; Rede heterogénea; Sustentabilidade ambiental; Análise de custos; Alocação espectral co-canal; Alocação espectral separada; Implementação; Capacidade; Long term evolution – avançado, sequestro de carbono
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Manager
APA (6th Edition):
Vaz, F. J. A. S. M. (2012). Technical, financial and environmental evaluation of 4G long term evolution: advanced with femtocell base stations. (Thesis). RCAAP. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:repositorio.iscte-iul.pt:10071/7979
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):
Vaz, Filipe José Antunes Silva Moreno. “Technical, financial and environmental evaluation of 4G long term evolution: advanced with femtocell base stations.” 2012. Thesis, RCAAP. Accessed March 08, 2021.
https://www.rcaap.pt/detail.jsp?id=oai:repositorio.iscte-iul.pt:10071/7979.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Vaz, Filipe José Antunes Silva Moreno. “Technical, financial and environmental evaluation of 4G long term evolution: advanced with femtocell base stations.” 2012. Web. 08 Mar 2021.
Vancouver:
Vaz FJASM. Technical, financial and environmental evaluation of 4G long term evolution: advanced with femtocell base stations. [Internet] [Thesis]. RCAAP; 2012. [cited 2021 Mar 08].
Available from: https://www.rcaap.pt/detail.jsp?id=oai:repositorio.iscte-iul.pt:10071/7979.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Vaz FJASM. Technical, financial and environmental evaluation of 4G long term evolution: advanced with femtocell base stations. [Thesis]. RCAAP; 2012. Available from: https://www.rcaap.pt/detail.jsp?id=oai:repositorio.iscte-iul.pt:10071/7979
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Louisiana State University
9.
Vozzo, Maria Louise.
Oyster Spat Survival in Response to Hydrocarbon Contamination and Predation in Barataria Bay, Louisiana.
Degree: MS, 2014, Louisiana State University
URL: etd-07022014-151226
;
https://digitalcommons.lsu.edu/gradschool_theses/3886
► Barataria Bay, in southeast Louisiana is home to productive oyster reefs that are both ecologically and economically important, but was threatened by the Deepwater Horizon…
(more)
▼ Barataria Bay, in southeast Louisiana is home to productive oyster reefs that are both ecologically and economically important, but was threatened by the Deepwater Horizon oil spill in April 2010. This study was designed to determine how the oil spill affected long- and short-term oyster recruitment, and spat (juvenile oysters) cellular health. I also investigated how predators in the bay affect spat survival. Four study sites were selected in Barataria Bay: two control and two oiled, each with a low and high salinity location. To determine whether there were long-term effects of the oil spill on oyster recruitment, tiles were placed at each site in 2012 and 2013 and spat recruitment quantified monthly. Results indicate that in 2012, recruitment varied more with salinity, but in 2013 when early summer salinity was lower, recruitment only occurred at the control sites. Tiles with 5 mL of light crude oil absorbed were used to study the short-term effects of oil on oyster and barnacle recruitment in 2013. Spat recruitment was lower on oiled tiles but there was no difference in spat size between treatments; alternately, there was a slight tendency for oil to increase barnacle recruitment. The effect of No (0 ppm), Low (500 ppm) or High (25,000 ppm) oil concentrations in 10 and 20 PSU seawater on spat cellular function was determined. Lysosomal stability was lower in low and high oil treatments suggesting oiling can affect spat health after just 10 days of exposure. The effect of predators on spat survival at each site was determined by quantifying predation on spat with no cage or in predator exclusion cages with 0.5, 1.0, or 3.0 cm mesh openings. The presence of a cage reduced predation of oyster spat. Predation rates were greatest on spat without cages suggesting larger predators such as blue crabs and oyster drills, with access to exposed spat, may play greater roles in post-settlement spat mortality than other predators such as mud crabs. Oyster recruitment and spat survival seems to depend more on salinity and predation than long-term hydrocarbon contamination. However, the short-term effect of hydrocarbon contamination can detrimentally impact spat recruitment and health; thus, clean-up efforts immediately following an oil spill and continuous monitoring efforts are necessary to maintain healthy oyster populations.
Subjects/Keywords: short term effects; long term effects
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APA (6th Edition):
Vozzo, M. L. (2014). Oyster Spat Survival in Response to Hydrocarbon Contamination and Predation in Barataria Bay, Louisiana. (Masters Thesis). Louisiana State University. Retrieved from etd-07022014-151226 ; https://digitalcommons.lsu.edu/gradschool_theses/3886
Chicago Manual of Style (16th Edition):
Vozzo, Maria Louise. “Oyster Spat Survival in Response to Hydrocarbon Contamination and Predation in Barataria Bay, Louisiana.” 2014. Masters Thesis, Louisiana State University. Accessed March 08, 2021.
etd-07022014-151226 ; https://digitalcommons.lsu.edu/gradschool_theses/3886.
MLA Handbook (7th Edition):
Vozzo, Maria Louise. “Oyster Spat Survival in Response to Hydrocarbon Contamination and Predation in Barataria Bay, Louisiana.” 2014. Web. 08 Mar 2021.
Vancouver:
Vozzo ML. Oyster Spat Survival in Response to Hydrocarbon Contamination and Predation in Barataria Bay, Louisiana. [Internet] [Masters thesis]. Louisiana State University; 2014. [cited 2021 Mar 08].
Available from: etd-07022014-151226 ; https://digitalcommons.lsu.edu/gradschool_theses/3886.
Council of Science Editors:
Vozzo ML. Oyster Spat Survival in Response to Hydrocarbon Contamination and Predation in Barataria Bay, Louisiana. [Masters Thesis]. Louisiana State University; 2014. Available from: etd-07022014-151226 ; https://digitalcommons.lsu.edu/gradschool_theses/3886
University of Texas – Austin
10.
Utianski, Danielle Blair.
Exploration of short and long term memory in adults who do and do not stutter.
Degree: MA, Speech-Language Pathology, 2015, University of Texas – Austin
URL: http://hdl.handle.net/2152/33516
► The purpose of the present study is to look at short-term and long-term memory differences between persons who do and do not stutter. Adults who…
(more)
▼ The purpose of the present study is to look at short-
term and
long-
term memory differences between persons who do and do not stutter. Adults who do and do not stutter listened to lists of 12 phonologically related, 12 semantically related, and 12 neutral words. Both groups will be required to recall these words immediately and after a 20-minute time delay where participants were presented with interference tasks. It was hypothesized that persons who stutter would demonstrate lower recall than adults who do not stutter on the immediate recall of phonological lists but that no such differences would be observed for the semantic or control lists. Further, that after multiple exposures to these word lists the initial immediate recall differences will dissipate. Taken together, these predictions would lend further support to the notion that phonological working memory is initially more taxing for AWS. No significant differences were seen on short-
term or
long-
term accuracy rates between speaker groups for the phonological, semantic, or control list conditions. AWS saw a significantly higher rate of increase on performance from first to last short-
term trials on phonological condition than AWNS counterpart. This difference was not seen for semantic or control conditions.
Advisors/Committee Members: Byrd, Courtney T. (advisor), Hampton, Elizabeth H (committee member).
Subjects/Keywords: Long-term memory; Short-term memory; Stuttering
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APA (6th Edition):
Utianski, D. B. (2015). Exploration of short and long term memory in adults who do and do not stutter. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/33516
Chicago Manual of Style (16th Edition):
Utianski, Danielle Blair. “Exploration of short and long term memory in adults who do and do not stutter.” 2015. Masters Thesis, University of Texas – Austin. Accessed March 08, 2021.
http://hdl.handle.net/2152/33516.
MLA Handbook (7th Edition):
Utianski, Danielle Blair. “Exploration of short and long term memory in adults who do and do not stutter.” 2015. Web. 08 Mar 2021.
Vancouver:
Utianski DB. Exploration of short and long term memory in adults who do and do not stutter. [Internet] [Masters thesis]. University of Texas – Austin; 2015. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2152/33516.
Council of Science Editors:
Utianski DB. Exploration of short and long term memory in adults who do and do not stutter. [Masters Thesis]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/33516
NSYSU
11.
Hung, Tzu-Chun.
Improve the Handover Mechanism of LTE-WiFi in Heterogeneous Networks.
Degree: Master, Computer Science and Engineering, 2017, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0806117-172650
► In view of the progress of the development of science and technology, users demands for the network gradually increased. The traditional networks have gradually become…
(more)
▼ In view of the progress of the development of science and technology, users demands for the network gradually increased. The traditional networks have gradually become inadequate. With the change of usage habit, the connection for a user to the network is no longer just in a fixed location, but rather hope to provide better quality of network services when a user is moving, which has become an important
subject of today's wireless network transmissions.
While the
deployment of LTE base stations and Wi-Fi APs in the environment increased, users have more network services to choose. The LTE base stations can provide a wider range of services than the Wi-Fi AP. However, using the LTE network is usually required to pay but using Wi-Fi network is often free. Therefore, it is better to choose Wi-Fi for a user as much as possible. As the current Wi-Fi network has been unable to meet the needs of users and the user must switch to the LTE network, the current method is adjusted by the user. Hence, we attempt to propose a more intelligent handover mechanism to replace the current method.
In our paper, we proposed a handover mechanism for user to make judgments based on the current situation of the Internet environment. According to the current situation we divided it into three cases, and users can make judgments based on the algorithm to switch to a better service to provide the network to satisfy the needs of users.
According to the simulation results, compared with the traditional Wi-Fi connection method, our method can serve more users and have a larger average total throughput, especially in the heavy load situation, there will be a better performance.
Advisors/Committee Members: Wei-Kuang Lai (committee member), Tzung-Pei Hong (chair), Shu-Min Li (chair), You-Chiun Wang (chair), Ming-Chao Chiang (chair).
Subjects/Keywords: Long Term Evolution; Heterogeneous; Handover
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APA (6th Edition):
Hung, T. (2017). Improve the Handover Mechanism of LTE-WiFi in Heterogeneous Networks. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0806117-172650
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):
Hung, Tzu-Chun. “Improve the Handover Mechanism of LTE-WiFi in Heterogeneous Networks.” 2017. Thesis, NSYSU. Accessed March 08, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0806117-172650.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hung, Tzu-Chun. “Improve the Handover Mechanism of LTE-WiFi in Heterogeneous Networks.” 2017. Web. 08 Mar 2021.
Vancouver:
Hung T. Improve the Handover Mechanism of LTE-WiFi in Heterogeneous Networks. [Internet] [Thesis]. NSYSU; 2017. [cited 2021 Mar 08].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0806117-172650.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hung T. Improve the Handover Mechanism of LTE-WiFi in Heterogeneous Networks. [Thesis]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0806117-172650
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universidade Nova
12.
Tostões, Rui Manuel Lucas Gameiro Domingues.
Process engineering of liver cells for drug testing applications.
Degree: 2012, Universidade Nova
URL: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7612
► Dissertação para obtenção do Grau de Doutor em Bioengenharia
The primary culture of human hepatocytes is a requirement in drug development tests. This application is…
(more)
▼ Dissertação para obtenção do Grau de Doutor em
Bioengenharia
The primary culture of human hepatocytes is a requirement in drug development tests. This
application is currently hampered by two problems: the limited proliferation of the hepatocytes and the rapid loss of liver-specific phenotype of these cells, when cultured in vitro. This thesis aimed at minimizing this latter issue by cultivating hepatocytes, as spheroids, in fully controlled bioreactors.
The state of the art of the primary cultures of hepatocytes is reviewed in Chapter 1, after a brief introduction to the liver physiology the drug development process.
The improvement of the bioreactor cultures of hepatocyte spheroids was initially done using freshly isolated rat hepatocytes; the effects of alginate microencapsulation, perfusion culture and their synergy on the maintenance of the hepatocyte spheroids liver-specific phenotype were assessed in Chapters 2 and 3; it was concluded that the perfusion culture and alginateencapsulation
had a positive synergic effect on such hepatic phenotype.
The perfusion bioreactor developed in Chapter 3 was used in Chapter 4 for the extended culture of freshly isolated human hepatocytes, as spheroids, from three different donors. These cultures responded to repeated dose drug treatments as expected from mature and differentiated hepatocytes, in up to 4 weeks culture time.
In Chapter 5, human embryonic stem cell-derived hepatic progenitors were cultured as spheroids and further differentiated into hepatocyte-like cells; the differential expression of hepatic genes between this spheroid population and a monolayer differentiated hepatocyte-like
cell population showed a more efficient differentiation under spheroid culture.
The bioengineering improvements of this thesis, as well as the future work, were discussed in Chapter 6.
This thesis has led to the establishment and validation of primary cultures of hepatocyte
spheroids, in perfusion bioreactors, which can be used for long-term, repeated dose tests in drug development.
Advisors/Committee Members: Alves, Paula.
Subjects/Keywords: CYP450; Hepatocytes; 3D; Long term
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APA (6th Edition):
Tostões, R. M. L. G. D. (2012). Process engineering of liver cells for drug testing applications. (Thesis). Universidade Nova. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7612
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):
Tostões, Rui Manuel Lucas Gameiro Domingues. “Process engineering of liver cells for drug testing applications.” 2012. Thesis, Universidade Nova. Accessed March 08, 2021.
http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7612.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tostões, Rui Manuel Lucas Gameiro Domingues. “Process engineering of liver cells for drug testing applications.” 2012. Web. 08 Mar 2021.
Vancouver:
Tostões RMLGD. Process engineering of liver cells for drug testing applications. [Internet] [Thesis]. Universidade Nova; 2012. [cited 2021 Mar 08].
Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7612.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tostões RMLGD. Process engineering of liver cells for drug testing applications. [Thesis]. Universidade Nova; 2012. Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7612
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Toronto
13.
Reynolds, Shannon Elizabeth.
A Comparative Analysis of Long-term Care Policies and Placements.
Degree: 2013, University of Toronto
URL: http://hdl.handle.net/1807/35679
► The objective of this study was to determine whether provincial health policies influence the supply of long-term care in a province, and the care received…
(more)
▼ The objective of this study was to determine whether provincial health policies influence the supply of long-term care in a province, and the care received by residents that require it. This was achieved by first conducting a comprehensive review and comparative analysis of the long-term care policies of Alberta and Ontario, and then comparing health conditions of long-term care and assisted living/retirement home residents in both provinces. The latter comparisons used information collected from comparable versions of the Resident Assessment Instrument – Minimum Data Set (RAI-MDS) and the RAI-MDS Home Care. The study hypothesis was that provinces with health policies favouring institutional over community care would have a higher proportion of residents with lower care requirements in institutional settings. The results show that this is not the case, and that institutional settings house those with high care needs in both provinces.
MAST
Advisors/Committee Members: Wodchis, Walter, Health Policy, Management and Evaluation.
Subjects/Keywords: Long-Term Care; Policies; 0566
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APA (6th Edition):
Reynolds, S. E. (2013). A Comparative Analysis of Long-term Care Policies and Placements. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/35679
Chicago Manual of Style (16th Edition):
Reynolds, Shannon Elizabeth. “A Comparative Analysis of Long-term Care Policies and Placements.” 2013. Masters Thesis, University of Toronto. Accessed March 08, 2021.
http://hdl.handle.net/1807/35679.
MLA Handbook (7th Edition):
Reynolds, Shannon Elizabeth. “A Comparative Analysis of Long-term Care Policies and Placements.” 2013. Web. 08 Mar 2021.
Vancouver:
Reynolds SE. A Comparative Analysis of Long-term Care Policies and Placements. [Internet] [Masters thesis]. University of Toronto; 2013. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1807/35679.
Council of Science Editors:
Reynolds SE. A Comparative Analysis of Long-term Care Policies and Placements. [Masters Thesis]. University of Toronto; 2013. Available from: http://hdl.handle.net/1807/35679
University of Debrecen
14.
Bencsik, Renáta.
Az uranil-acetát citotoxikológiai hatása K562 erythroleukémiás sejtekre
.
Degree: DE – TEK – Természettudományi és Technológiai Kar – Biológiai és Ökológiai Intézet, 2010, University of Debrecen
URL: http://hdl.handle.net/2437/96465
Ebben a szakdolgozatban az uranil-acetát citotoxikológiai hatását tanulmányoztam K562 sejteken. A sejteket Long-Term scanning mikroszkópos rendszerrel vizsgáltam.
Advisors/Committee Members: Szemán-Nagy, Gábor György (advisor).Subjects/Keywords: uranil-acetát;
Long-Term scanning
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APA (6th Edition):
Bencsik, R. (2010). Az uranil-acetát citotoxikológiai hatása K562 erythroleukémiás sejtekre
. (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/96465
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):
Bencsik, Renáta. “Az uranil-acetát citotoxikológiai hatása K562 erythroleukémiás sejtekre
.” 2010. Thesis, University of Debrecen. Accessed March 08, 2021.
http://hdl.handle.net/2437/96465.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bencsik, Renáta. “Az uranil-acetát citotoxikológiai hatása K562 erythroleukémiás sejtekre
.” 2010. Web. 08 Mar 2021.
Vancouver:
Bencsik R. Az uranil-acetát citotoxikológiai hatása K562 erythroleukémiás sejtekre
. [Internet] [Thesis]. University of Debrecen; 2010. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2437/96465.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bencsik R. Az uranil-acetát citotoxikológiai hatása K562 erythroleukémiás sejtekre
. [Thesis]. University of Debrecen; 2010. Available from: http://hdl.handle.net/2437/96465
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universitat Pompeu Fabra
15.
Hernández-Pizarro, Helena M.
Essays on long-term care.
Degree: Departament d'Economia i Empresa, 2017, Universitat Pompeu Fabra
URL: http://hdl.handle.net/10803/456565
► Aquesta tesi analitza els efectes de l’expansió de les prestacions públiques en dependència a l’estat espanyol, des de tres perspectives diferents. En el primer capítol,…
(more)
▼ Aquesta tesi analitza els efectes de l’expansió de les prestacions públiques en
dependència a l’estat espanyol, des de tres perspectives diferents. En el primer
capítol, estimo l’impacte de les prestacions públiques en la mortalitat dels beneficiaris.
Els resultats suggereixen que la provisió d’atenció prevé el deteriorament
de la salut, fins al punt de posposar la mort quan el nivell de dependència és baix o
moderat. En el segon capítol –amb García-Gómez, López-Casasnovas i Vidiella-
Martin–, avaluem l’equitat en l’accés als diversos serveis públics per a l’atenció
a la dependència. Mostrem que el sistema públic de dependència és especialment
inequitatiu en la forma de provisió de beneficis. Això es tradueix en major
concentració entre els més pobres del temps d’espera per accedir als recursos
públics. Al darrer capítol –amb López-Casasnovas i Nicodemo–, investiguem les
conseqüèencies inintencionades d’un sistema de beneficis no lineal. Identifiquem
que entorn el 3% de la gent que sol.licita les prestacions són classificats en nivells
de necessitat per sobre dels que els pertoca, fet que incrementa el cost del sistema.
És per això, que proposem un sistema lineal de prestacions, que esdevingui més
igualitari i minimitzi els incentius perversos.
Advisors/Committee Members: [email protected] (authoremail), true (authoremailshow), López i Casasnovas, Guillem (director), true (authorsendemail).
Subjects/Keywords: Long-Term Care; Spain; 33
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APA (6th Edition):
Hernández-Pizarro, H. M. (2017). Essays on long-term care. (Thesis). Universitat Pompeu Fabra. Retrieved from http://hdl.handle.net/10803/456565
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):
Hernández-Pizarro, Helena M. “Essays on long-term care.” 2017. Thesis, Universitat Pompeu Fabra. Accessed March 08, 2021.
http://hdl.handle.net/10803/456565.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hernández-Pizarro, Helena M. “Essays on long-term care.” 2017. Web. 08 Mar 2021.
Vancouver:
Hernández-Pizarro HM. Essays on long-term care. [Internet] [Thesis]. Universitat Pompeu Fabra; 2017. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10803/456565.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hernández-Pizarro HM. Essays on long-term care. [Thesis]. Universitat Pompeu Fabra; 2017. Available from: http://hdl.handle.net/10803/456565
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Manitoba
16.
Keating, Bonnie M.
"Women who made it 'home'": an exploratory study of the experiences of cognitively well women living in long-term care with cognitively impaired older adults.
Degree: Nursing, 2010, University of Manitoba
URL: http://hdl.handle.net/1993/4099
► The meaning of ‘home’ for older adults in long-term care (LTC) settings is not well understood. Furthermore, how living with cognitively impaired older adults may…
(more)
▼ The meaning of ‘home’ for older adults in
long-
term care (LTC) settings is not well understood. Furthermore, how living with cognitively impaired older adults may affect the meaning of ‘home’ is under researched. The goal of this study was to explore how living with cognitively impaired older adults affects the meaning of ‘home’ for cognitively well female older adults residing in LTC. A convenience sample of eleven female cognitively well older adults was selected from four LTC settings in Winnipeg, Manitoba, Canada. The eleven women were interviewed to determine their meaning of ‘home’ prior to and following placement in the LTC setting. Two key questions posed to the women were, “Do you consider (name of LTC setting) to be ‘home’?” and “How does living with confused people affect the meaning of home?” Eight of the women considered the LTC setting where they reside to be ‘home’. Nine of the women indicated that living with cognitively impaired older adults does not affect their meaning of ‘home’. These findings suggest two things. First, that most cognitively well female older adults create a new ‘home’ for themselves when they move to the LTC setting. Second, that many cognitively well female older adults demonstrate compassion and acceptance of living with fellow residents who have cognitive impairment and may exhibit disruptive behaviours.
Advisors/Committee Members: Guse, Lorna (Nursing) (supervisor), Woodgate, Roberta (Nursing) Hallman, Bonnie (Environment and Geography) .
Subjects/Keywords: Home; long-term; care
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Export
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Manager
APA (6th Edition):
Keating, B. M. (2010). "Women who made it 'home'": an exploratory study of the experiences of cognitively well women living in long-term care with cognitively impaired older adults. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/4099
Chicago Manual of Style (16th Edition):
Keating, Bonnie M. “"Women who made it 'home'": an exploratory study of the experiences of cognitively well women living in long-term care with cognitively impaired older adults.” 2010. Masters Thesis, University of Manitoba. Accessed March 08, 2021.
http://hdl.handle.net/1993/4099.
MLA Handbook (7th Edition):
Keating, Bonnie M. “"Women who made it 'home'": an exploratory study of the experiences of cognitively well women living in long-term care with cognitively impaired older adults.” 2010. Web. 08 Mar 2021.
Vancouver:
Keating BM. "Women who made it 'home'": an exploratory study of the experiences of cognitively well women living in long-term care with cognitively impaired older adults. [Internet] [Masters thesis]. University of Manitoba; 2010. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1993/4099.
Council of Science Editors:
Keating BM. "Women who made it 'home'": an exploratory study of the experiences of cognitively well women living in long-term care with cognitively impaired older adults. [Masters Thesis]. University of Manitoba; 2010. Available from: http://hdl.handle.net/1993/4099
University of Plymouth
17.
Goebert, Samuel.
Decentralised hosting and preservation of digital collections.
Degree: PhD, 2019, University of Plymouth
URL: http://hdl.handle.net/10026.1/13650
► The Internet is changing from a web of documents to a web of data. Open-data collections like Wikipedia, Internet Archive, Stack Exchange and OpenStreetMap have…
(more)
▼ The Internet is changing from a web of documents to a web of data. Open-data collections like Wikipedia, Internet Archive, Stack Exchange and OpenStreetMap have become important sources of global knowledge. The data are freely available and everybody is invited to contribute. Preserving digital collections is also performed by entities not affiliated with the original initiatives and involves copying content and meta-data about a collection to new storage locations. A copied collection retrieved from an untrusted location requires the task of revalidating the authenticity of the data. Since budgets are limited, novel ways of finding storage space have to be acquired. Safely storing and validating data without the need to own and control the storage location enables this. This thesis develops a protocol for decentralised hosting of digital collections. The result is a formalised, decentral mode of discovery, curation and hosting for datasets, retaining authenticity even at untrusted storage locations. Donating storage space and bandwidth becomes possible for entities not affiliated with the original initiative and ensures long-term access to the authentic collection for the public at the same time. The protocol is leveraging the bittorrent protocol, a variation of the block chain protocol and is backwards compatible with existing web application architecture. This novel approach is validated through a proof-of-concept prototype. A series of test scenarios is used to illustrate how a decentralised collection would behave given multiple participants. The results support the use of a decentralised hosting approach for digital collections leveraging storage locations that are under the supervision of entities not affiliated with the original initiative. The thesis concludes with a detailed summary of the contributions to the field and suggests further areas of study in the context of distributed-preservation.
Subjects/Keywords: Distributed Systems; Long Term Preservation
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APA (6th Edition):
Goebert, S. (2019). Decentralised hosting and preservation of digital collections. (Doctoral Dissertation). University of Plymouth. Retrieved from http://hdl.handle.net/10026.1/13650
Chicago Manual of Style (16th Edition):
Goebert, Samuel. “Decentralised hosting and preservation of digital collections.” 2019. Doctoral Dissertation, University of Plymouth. Accessed March 08, 2021.
http://hdl.handle.net/10026.1/13650.
MLA Handbook (7th Edition):
Goebert, Samuel. “Decentralised hosting and preservation of digital collections.” 2019. Web. 08 Mar 2021.
Vancouver:
Goebert S. Decentralised hosting and preservation of digital collections. [Internet] [Doctoral dissertation]. University of Plymouth; 2019. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10026.1/13650.
Council of Science Editors:
Goebert S. Decentralised hosting and preservation of digital collections. [Doctoral Dissertation]. University of Plymouth; 2019. Available from: http://hdl.handle.net/10026.1/13650
University of Lethbridge
18.
University of Lethbridge. Faculty of Arts and Science.
Maintenance and Behavioural Expression of Long-term Memories Acquired in the Absence of the Hippocampus
.
Degree: 2019, University of Lethbridge
URL: http://hdl.handle.net/10133/5423
► We examine the maintenance and behavioural expression of long-term memories acquired in the absence of the hippocampus. The hypothesis that the hippocampus is necessary to…
(more)
▼ We examine the maintenance and behavioural expression of long-term memories acquired in the absence of the hippocampus. The hypothesis that the hippocampus is necessary to form stable and detailed long-term memories is tested. We find rats with extensive hippocampal damage made before learning exhibit normal maintenance and behavioural expression of contextual fear memory, object discrimination, and context discrimination. The discovery that non-hippocampal networks can encode, maintain, and retrieve memories, widely-thought to be dependent on the hippocampus and its consolidation processes adds to a growing body of literature which draws into question most views of the hippocampus and memory consolidation. Our findings suggest: 1) hippocampal-dependent systems-level consolidation is not required for stable long-term memory in the rat; 2) non-hippocampal networks possess sufficient representational complexity to support normal discriminative memory-guided behaviours; 3) the broad distinction between hippocampal and non-hippocampal memories requires re-evaluation through rigorous experimentation, rather than adherence to modal views.
Subjects/Keywords: Hippocampus (Brain);
Long-term memory
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CSE |
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Science, U. o. L. F. o. A. a. (2019). Maintenance and Behavioural Expression of Long-term Memories Acquired in the Absence of the Hippocampus
. (Thesis). University of Lethbridge. Retrieved from http://hdl.handle.net/10133/5423
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):
Science, University of Lethbridge. Faculty of Arts and. “Maintenance and Behavioural Expression of Long-term Memories Acquired in the Absence of the Hippocampus
.” 2019. Thesis, University of Lethbridge. Accessed March 08, 2021.
http://hdl.handle.net/10133/5423.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Science, University of Lethbridge. Faculty of Arts and. “Maintenance and Behavioural Expression of Long-term Memories Acquired in the Absence of the Hippocampus
.” 2019. Web. 08 Mar 2021.
Vancouver:
Science UoLFoAa. Maintenance and Behavioural Expression of Long-term Memories Acquired in the Absence of the Hippocampus
. [Internet] [Thesis]. University of Lethbridge; 2019. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10133/5423.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Science UoLFoAa. Maintenance and Behavioural Expression of Long-term Memories Acquired in the Absence of the Hippocampus
. [Thesis]. University of Lethbridge; 2019. Available from: http://hdl.handle.net/10133/5423
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Queens University
19.
Hogsden Robinson, Jennifer Lauren.
Plasticity of the Rat Thalamocortical Auditory System During Development and Following White Noise Exposure
.
Degree: Neuroscience Studies, 2011, Queens University
URL: http://hdl.handle.net/1974/6272
► Synaptic plasticity reflects the capacity of synapses to undergo changes in synaptic strength and connectivity, and is highly regulated by age and sensory experience. This…
(more)
▼ Synaptic plasticity reflects the capacity of synapses to undergo changes in synaptic strength and connectivity, and is highly regulated by age and sensory experience. This thesis focuses on the characterization of synaptic plasticity in the primary auditory cortex (A1) of rats throughout development and following sensory deprivation. Initial experiments revealed an age-dependent decline in plasticity, as indicated by reductions in long-term potentiation (LTP). The enhanced plasticity of juvenile rats appeared to be mediated by NR2B subunits of the N-methyl-d-aspartate receptor (NMDAR), as NR2B antagonist application reduced LTP to adult-like levels in juveniles, yet had no effect in adults. The importance of sensory experience in mediating plasticity was revealed in experiments using white noise exposure, which is a sensory deprivation technique known to arrest cortical development in A1. Notably, adult rats reared in continuous white noise maintained more juvenile-like levels of LTP, which normalized upon subsequent exposure to an unaltered acoustic environment. The white noise-induced LTP enhancements also appeared to be mediated by NR2B subunits, as NR2B antagonists reversed these LTP enhancements in white noise-reared rats. Given the strong influence that sensory experience exerts on plasticity, additional experiments examined the effect of shorter episodes of white noise exposure on LTP in adult rats. Exposure to white noise during early postnatal life appeared to “prime” A1 for subsequent exposure in adulthood, resulting in enhanced LTP. The necessity of early-life exposure was evident, as repeated episodes of white noise in adulthood did not enhance plasticity. In older rats that typically no longer express LTP in A1, pharmacological methods to enhance plasticity were explored. Moderate LTP was observed in older rats with cortical zinc application, which may act through its antagonism of NR2A subunits of the NMDAR. Additionally, current source density and cortical silencing analyses were conducted to characterize the distinct peaks of field postsynaptic potentials recorded in A1, with the earlier and later peaks likely representing thalamocortical and intracortical synapses, respectively. Together, this thesis emphasizes the critical role of sensory experience in determining levels of cortical plasticity, and demonstrates strategies to enhance plasticity in the mature auditory cortex.
Subjects/Keywords: Long-Term Potentiation
;
Auditory Cortex
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hogsden Robinson, J. L. (2011). Plasticity of the Rat Thalamocortical Auditory System During Development and Following White Noise Exposure
. (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/6272
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):
Hogsden Robinson, Jennifer Lauren. “Plasticity of the Rat Thalamocortical Auditory System During Development and Following White Noise Exposure
.” 2011. Thesis, Queens University. Accessed March 08, 2021.
http://hdl.handle.net/1974/6272.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hogsden Robinson, Jennifer Lauren. “Plasticity of the Rat Thalamocortical Auditory System During Development and Following White Noise Exposure
.” 2011. Web. 08 Mar 2021.
Vancouver:
Hogsden Robinson JL. Plasticity of the Rat Thalamocortical Auditory System During Development and Following White Noise Exposure
. [Internet] [Thesis]. Queens University; 2011. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1974/6272.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hogsden Robinson JL. Plasticity of the Rat Thalamocortical Auditory System During Development and Following White Noise Exposure
. [Thesis]. Queens University; 2011. Available from: http://hdl.handle.net/1974/6272
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Edinburgh
20.
Yang, Yiming.
Motion synthesis for high degree-of-freedom robots in complex and changing environments.
Degree: PhD, 2018, University of Edinburgh
URL: http://hdl.handle.net/1842/31236
► The use of robotics has recently seen significant growth in various domains such as unmanned ground/underwater/aerial vehicles, smart manufacturing, and humanoid robots. However, one of…
(more)
▼ The use of robotics has recently seen significant growth in various domains such as unmanned ground/underwater/aerial vehicles, smart manufacturing, and humanoid robots. However, one of the most important and essential capabilities required for long term autonomy, which is the ability to operate robustly and safely in real-world environments, in contrast to industrial and laboratory setup is largely missing. Designing robots that can operate reliably and efficiently in cluttered and changing environments is non-trivial, especially for high degree-of-freedom (DoF) systems, i.e. robots with multiple actuators. On one hand, the dexterity offered by the kinematic redundancy allows the robot to perform dexterous manipulation tasks in complex environments, whereas on the other hand, such complex system also makes controlling and planning very challenging. To address such two interrelated problems, we exploit robot motion synthesis from three perspectives that feed into each other: end-pose planning, motion planning and motion adaptation. We propose several novel ideas in each of the three phases, using which we can efficiently synthesise dexterous manipulation motion for fixed-base robotic arms, mobile manipulators, as well as humanoid robots in cluttered and potentially changing environments. Collision-free inverse kinematics (IK), or so-called end-pose planning, a key prerequisite for other modules such as motion planning, is an important and yet unsolved problem in robotics. Such information is often assumed given, or manually provided in practice, which significantly limiting high-level autonomy. In our research, by using novel data pre-processing and encoding techniques, we are able to efficiently search for collision-free end-poses in challenging scenarios in the presence of uneven terrains. After having found the end-poses, the motion planning module can proceed. Although motion planning has been claimed as well studied, we find that existing algorithms are still unreliable for robust and safe operations in real-world applications, especially when the environment is cluttered and changing. We propose a novel resolution complete motion planning algorithm, namely the Hierarchical Dynamic Roadmap, that is able to generate collision-free motion trajectories for redundant robotic arms in extremely complicated environments where other methods would fail. While planning for fixed-base robotic arms is relatively less challenging, we also investigate into efficient motion planning algorithms for high DoF (30 - 40) humanoid robots, where an extra balance constraint needs to be taken into account. The result shows that our method is able to efficiently generate collision-free whole-body trajectories for different humanoid robots in complex environments, where other methods would require a much longer planning time. Both end-pose and motion planning algorithms compute solutions in static environments, and assume the environments stay static during execution. While human and most animals are incredibly good at handling…
Subjects/Keywords: 629.8; robotics; long term autonomy; degree-of-freedom systems; DoF systems; robot motion synthesis; end-pose planning; motion planning; motion adaptation; collision-free inverse kinematics; UR5; KUKA LWR
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yang, Y. (2018). Motion synthesis for high degree-of-freedom robots in complex and changing environments. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/31236
Chicago Manual of Style (16th Edition):
Yang, Yiming. “Motion synthesis for high degree-of-freedom robots in complex and changing environments.” 2018. Doctoral Dissertation, University of Edinburgh. Accessed March 08, 2021.
http://hdl.handle.net/1842/31236.
MLA Handbook (7th Edition):
Yang, Yiming. “Motion synthesis for high degree-of-freedom robots in complex and changing environments.” 2018. Web. 08 Mar 2021.
Vancouver:
Yang Y. Motion synthesis for high degree-of-freedom robots in complex and changing environments. [Internet] [Doctoral dissertation]. University of Edinburgh; 2018. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1842/31236.
Council of Science Editors:
Yang Y. Motion synthesis for high degree-of-freedom robots in complex and changing environments. [Doctoral Dissertation]. University of Edinburgh; 2018. Available from: http://hdl.handle.net/1842/31236
Queens University
21.
Hager, Audrey.
Potential for change: Characterizing synaptic plasticity following visual discrimination learning in adult rats.
Degree: Psychology, 2015, Queens University
URL: http://hdl.handle.net/1974/12786
► Synaptic plasticity (long-term potentiation, LTP and long-term depression, LTD) plays an important role in processes of learning and memory formation. In order to provide a…
(more)
▼ Synaptic plasticity (long-term potentiation, LTP and long-term depression, LTD) plays an important role in processes of learning and memory formation. In order to provide a link between these neurophysiological and cognitive processes the following experiments were performed using behavioral, electrophysiological, and pharmacological in vivo methods in order to describe synaptic plasticity in the adult rat visual system after learning a simple visual discrimination task.
Initially, a novel method is described providing a simple and noninvasive means to restrict visual input. Using a harness and face-mask for monocular occlusion, rats were trained in a monocular visual discrimination task using a Y-shaped water maze. Following learning, assessment of synaptic plasticity in the thalamocortical visual pathway found both general (changes in short-term plasticity in both cerebral hemispheres) and localized changes (greater LTP levels in the hemisphere contralateral to the open eye). The enhanced LTP in the primary visual cortex (V1) was blocked by an NR2B antagonist, suggesting that training resulted in changes in NMDA receptor expression or functioning.
Next, the effectiveness of LTD stimulation protocols to elicit synaptic depression under in vivo conditions were assessed. Of several single-pulse induction protocols tested, only strong low frequency burst stimulation (SLFS) produced significant, but transient (~20 min) depression in V1 (not affected by blockade of NMDA or metabotrobic glutamate receptors). These data highlight the resistance of the thalamocortical visual system to undergo synaptic depression in vivo. To examine whether learning alters LTD induction, SLFS was delivered to the thalamocortical visual pathway or the V1-perirhinal cortex pathway following visual discrimination. Neither pathway exhibited changes in LTD following training, suggesting that the learning-induced LTP facilitation reflects an expansion of the synaptic modification range.
Finally, the role of different populations of NMDA receptors (cortical vs. thalamic) in LTP induction in naïve and visually trained rats was examined. Surprisingly, naïve rats do not require activation of cortical NMDA receptors to express LTP, while LTP in trained rats involved the activation of both thalamic and cortical NMDA receptors. In summary, this thesis provides novel evidence for a metaplastic, training-induced up-regulation of LTP mechanisms in the thalamocortical visual system of adult rats.
Subjects/Keywords: learning memory
;
Long-term potentiation
;
long-term depression
;
visual system
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hager, A. (2015). Potential for change: Characterizing synaptic plasticity following visual discrimination learning in adult rats.
(Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/12786
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):
Hager, Audrey. “Potential for change: Characterizing synaptic plasticity following visual discrimination learning in adult rats.
” 2015. Thesis, Queens University. Accessed March 08, 2021.
http://hdl.handle.net/1974/12786.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hager, Audrey. “Potential for change: Characterizing synaptic plasticity following visual discrimination learning in adult rats.
” 2015. Web. 08 Mar 2021.
Vancouver:
Hager A. Potential for change: Characterizing synaptic plasticity following visual discrimination learning in adult rats.
[Internet] [Thesis]. Queens University; 2015. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1974/12786.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hager A. Potential for change: Characterizing synaptic plasticity following visual discrimination learning in adult rats.
[Thesis]. Queens University; 2015. Available from: http://hdl.handle.net/1974/12786
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Edinburgh
22.
Bromley, Catherine Maria-Luisa Sarah.
Beyond a boundary : conceptualising and measuring multiple health conditions in the Scottish population.
Degree: PhD, 2016, University of Edinburgh
URL: http://hdl.handle.net/1842/22895
► The concurrent experience of multiple health conditions (often termed multimorbidity) has become an important issue in recent years. Most research on this topic uses clinical…
(more)
▼ The concurrent experience of multiple health conditions (often termed multimorbidity) has become an important issue in recent years. Most research on this topic uses clinical data (e.g. GP or hospital records) that lack important socio-contextual information about the lives of people with multiple conditions. Population health surveys can help to overcome these limitations, but identifying people who have multiple conditions is problematic. Decisions need to be taken regarding what is meant by a condition, which ones should be included, and how multiple should be defined. These decisions tend to be based on what data are available, rather than on any universal inclusion criteria or theoretical underpinnings. This thesis used an approach informed by sociological theory and principles drawn from critical realist philosophy to estimate the prevalence of multiple conditions among adults (16+) in the general population, using data from the 1998 and 2008- 2011 Scottish Health Surveys. It explicitly acknowledged the multiple, contested and constructed nature of health, illness and diagnosis; the limits of empirical enquiry; and the need to approach concepts such as multiple conditions critically. To support the decision-making process, longitudinal analyses of mortality were used to examine the impact of including various contested conditions on people’s long-term chance of survival (if there was no evidence of impact then the definition was rejected). The final measure of multiple conditions arrived at suggested that 24.9% of adults had multiple conditions (compared with 17.2% using the survey’s original, unadjusted, measure). This measure was then used to explore how this status related to people’s wellbeing, which helped to highlight importance differences in experiences. Among adults with multiple conditions, 33.5% of those in the most deprived areas had low wellbeing compared with 13.5% of those in the least deprived areas. Low wellbeing was also higher among people with multiple conditions aged under 65 than those aged 65 and over, especially for those living in areas of high deprivation. There was some evidence that having multiple conditions and additional vulnerabilities (e.g. psychological distress, living in a deprived area, having activity limitations) before the age of 55 increased people’s risk of mortality, which might result in older populations appearing to have better wellbeing due to less healthy people not reaching old age. Working-age people with multiple conditions were also more likely than people of the same age with no conditions to be economically inactive, to not live in an owner-occupied property, and not have a co-resident partner. All of which suggest that poor health at younger ages limits access to the social and economic norms enjoyed by most people. The approach adopted arguably helped to avoid over-classifying largely healthy people as having multiple conditions, while still ensuring that people’s own perspectives on their health were not under-privileged with respect to more traditional…
Subjects/Keywords: 362.1; long-term health conditions; long-term conditions; survey; multimorbidity; wellbeing
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bromley, C. M. S. (2016). Beyond a boundary : conceptualising and measuring multiple health conditions in the Scottish population. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/22895
Chicago Manual of Style (16th Edition):
Bromley, Catherine Maria-Luisa Sarah. “Beyond a boundary : conceptualising and measuring multiple health conditions in the Scottish population.” 2016. Doctoral Dissertation, University of Edinburgh. Accessed March 08, 2021.
http://hdl.handle.net/1842/22895.
MLA Handbook (7th Edition):
Bromley, Catherine Maria-Luisa Sarah. “Beyond a boundary : conceptualising and measuring multiple health conditions in the Scottish population.” 2016. Web. 08 Mar 2021.
Vancouver:
Bromley CMS. Beyond a boundary : conceptualising and measuring multiple health conditions in the Scottish population. [Internet] [Doctoral dissertation]. University of Edinburgh; 2016. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1842/22895.
Council of Science Editors:
Bromley CMS. Beyond a boundary : conceptualising and measuring multiple health conditions in the Scottish population. [Doctoral Dissertation]. University of Edinburgh; 2016. Available from: http://hdl.handle.net/1842/22895
NSYSU
23.
Yang, Shu-Wei.
Evaluating the Ten-Year Long-Term Care Program from the Perspectives of Families with Long-Term Care Needs : An Example of Kaohsiung City.
Degree: Master, Public Affairs Management, 2016, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704116-170055
► The current study, adopting a qualitative research approach, probed into families requiring long-term care in Kaohsiung, aiming to explore usersâ challenges, needs, experiences, evaluations of…
(more)
▼ The current study, adopting a qualitative research approach, probed into families requiring
long-
term care in Kaohsiung, aiming to explore usersâ challenges, needs, experiences, evaluations of services, and expectation of related services in the care process. Furthermore, the study interviewed intermediary units (such as the head of a village or home care service units) and governmental units (Kaohsiung City Government Senior Citizen's Service Center and Department of Health, Kaohsiung City Government), examining their perspectives about controversies over the
long-
term care policy, effects of the Ten-Year
Long-
term Care Program, and future development of
long-
term care policies.
The results revealed that the most common challenge that families requiring
long-
term care faced was insufficient understanding of the
long-
term care related information, resulting in confusion about the contact window in the government and inadequate skills to take care of the disabled in the care process. Whether a family chose self-care or hired a foreign caretaker, a transition period during which the disabled was not assisted easily emerged between applying for the service and receiving the given service
Moreover, in terms of user experiences and general conditions of
long-
term care services, the diverse Ten-Year
Long-
term Care Program did provide certain benefits to those families in need. However, limitations on services led the public to apply for short-
term services, rather than for
long-
term care services provided by the government. The time of home care service provided was insufficient for those families to effectively solving the problem of caring capacity. The evaluation of in-home nursing care was generally higher, capable of not only reducing the patientsâ burden of moving back and forth but also saving caretakersâ time and energy. The pick-up service that was based on registered residence disqualified the seniors who actually lived in Kaohsiung (without registration) from applying transportation service. In addition, unclear cost information of the pick-up service resulted in misunderstanding and disputes of cost sharing when carpooling. There was also an insufficient connection between user families and the companies that provided assistive devices, leading to limited improvement in the physical environment of user families.
Finally, in terms of financing in the system, options on taxes, insurances, and cash payments differed with the applicantsâ economic status and disability status. With regard to the working conditions of home caregivers, the low salary and working hours of the job were not able to meet their basic needs. The uneven male-female ratio and the lack of unified regulation among organizations were also issues of concern.
Based on the aforementioned stakeholdersâ perspectives and careful examination of previous research, the current study provides Kaohsiung City Government with suggestions for further promotion of
long-
term care. In addition, the studyâs attempt to investigate into Kaohsiung City serves as an…
Advisors/Committee Members: Chang-Li Yang (chair), San-Pui Lam (committee member), Shu-Chuan Jennifer Yeh (chair), Yen-Wen Peng (committee member).
Subjects/Keywords: long-term care policy; long-term care service; long-term care; families of long-term care needs; Ten-Year Long-term Care Program
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yang, S. (2016). Evaluating the Ten-Year Long-Term Care Program from the Perspectives of Families with Long-Term Care Needs : An Example of Kaohsiung City. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704116-170055
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):
Yang, Shu-Wei. “Evaluating the Ten-Year Long-Term Care Program from the Perspectives of Families with Long-Term Care Needs : An Example of Kaohsiung City.” 2016. Thesis, NSYSU. Accessed March 08, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704116-170055.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yang, Shu-Wei. “Evaluating the Ten-Year Long-Term Care Program from the Perspectives of Families with Long-Term Care Needs : An Example of Kaohsiung City.” 2016. Web. 08 Mar 2021.
Vancouver:
Yang S. Evaluating the Ten-Year Long-Term Care Program from the Perspectives of Families with Long-Term Care Needs : An Example of Kaohsiung City. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Mar 08].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704116-170055.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yang S. Evaluating the Ten-Year Long-Term Care Program from the Perspectives of Families with Long-Term Care Needs : An Example of Kaohsiung City. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704116-170055
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
24.
Chen, Jian-chih.
Short-term variation of particulate organic carbon fluxes in different marine environments.
Degree: Master, Department of Oceanography, 2014, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809114-023901
► Sediment traps have been used to directly collect sinking particles in the ocean. Long-term (days to weeks) deployment of sediment traps are frequently used to…
(more)
▼ Sediment traps have been used to directly collect sinking particles in the ocean.
Long-
term (days to weeks)
deployment of sediment traps are frequently used to measure particulate organic carbon (POC) fluxes at the bottom of the euphotic zone of the ocean. However,
long-
term deployment of traps may confront difficulties, for example, longer
deployment-recovery time (at least 24 hours), unexpected weather conditions, and/or interference by fishing activity, which may result in trap damage or lost. To better understand if short-
term (hours) trap
deployment can be used to evaluate POC fluxes in the ocean, we conducted short-
term deployment of floating sediment traps and measured fluxes of sinking POC in different marine environments, including the southern East China Sea, northern South China Sea and western North Pacific Ocean. The results demonstrate that total trapped masses and POC significantly and positively correlated with
deployment time at all the study sites, suggesting that fluxes of mass and POC in sinking particles are proportional to
deployment time. At all the study sites, the characteristics of the water column did not show remarkable variation before and after deployments of sediment traps; moreover, the integrated chlorophyll a concentrations and POC inventories in the water column exhibited only small variation during trap-
deployment periods. POC fluxes (average ± SD) were 134 ± 32 mg mâ2 dâ1 in the southern East China Sea, 23 ± 5 mg mâ2 dâ1 in the northern South China Sea and 73 ± 4 mg mâ2 dâ1 in the western North Pacific Ocean. Particle fluxes had no remarkable diel variation. Overall, the results of this study suggest that short-
term deployment of sediment traps can be used to evaluate POC fluxes in the ocean if the characteristics of the water column are stable. Such the short-
term deployment of traps could potentially reduce the error in POC flux estimation caused by particle solubilization and the probability of trap damage or lost.
Advisors/Committee Members: Shih-Chieh Hsu (chair), Hung-yu Chen (chair), Chin-Chang Hung (committee member), Wen-Tseng Lo (chair), Fung-Chi Ko (chair).
Subjects/Keywords: particle solubilization; POC flux; sediment trap; time-series; short-term deployment
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APA (6th Edition):
Chen, J. (2014). Short-term variation of particulate organic carbon fluxes in different marine environments. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809114-023901
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):
Chen, Jian-chih. “Short-term variation of particulate organic carbon fluxes in different marine environments.” 2014. Thesis, NSYSU. Accessed March 08, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809114-023901.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Jian-chih. “Short-term variation of particulate organic carbon fluxes in different marine environments.” 2014. Web. 08 Mar 2021.
Vancouver:
Chen J. Short-term variation of particulate organic carbon fluxes in different marine environments. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Mar 08].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809114-023901.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen J. Short-term variation of particulate organic carbon fluxes in different marine environments. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809114-023901
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Tampere University
25.
Nosraty, Lily.
Successful aging among the oldest old
.
Degree: 2018, Tampere University
URL: https://trepo.tuni.fi/handle/10024/103279
► Vuosisatojen ajan ihmiset ja yhteiskunnat ovat tavoitelleet pidempää ja terveempää elämä ja parempaa elämän laatua. Nyt 21. vuosisadalla voimme todistaa vanhuusiän kuolleisuuden nopeaa laskua ja…
(more)
▼ Vuosisatojen ajan ihmiset ja yhteiskunnat ovat tavoitelleet pidempää ja terveempää elämä ja parempaa elämän laatua. Nyt 21. vuosisadalla voimme todistaa vanhuusiän kuolleisuuden nopeaa laskua ja hyvin vanhan ikäryhmän ennennäkemätöntä kasvua. Elämän pidentyminen ei kuitenkaan välttämättä merkitse parempaa terveyttä ja elämän laatua. Siksi on tärkeää pohtia hyvän ja onnistuneen vanhenemisen edellytyksiä: miten ikääntyminen voi tapahtua mahdollisimman hyvällä ja tyydyttävällä tavalla? Hyvälle ja onnistuneelle vanhenemiselle ei kuitenkaan ole olemassa yleisesti hyväksyttyä määritelmää eikä vakiintunutta mittaamistapaa. Tässä tutkimuksessa onnistunutta vanhenemista lähestyttiin hyvin vanhojen ihmisten näkökulmasta. – Tässä lyhennelmässä käytetään suoraa käännöstä käsitteestä ”successful aging”, vaikka suomalainen muoto luontevimmin olisikin hyvä vanheneminen.
Tutkimustehtävänä oli selvittää onnistuneen vanhenemisen yleisyyttä, tunnistaa siihen yhteydessä olevia tekijöitä, sekä tutkia, missä määrin se ennustaa pitkäaikaishoitoon siirtymistä ja kuolleisuutta. Onnistunutta vanhenemista mitattiin käyttäen erilaisia malleja jotka kaikki sisälsivät fyysisen, psykologisen ja sosiaalisen komponentin, mutta määrittelivät ”onnistumisen” eri tavoin. Ihmisten omia tapoja ymmärtää onnistunut vanheneminen ja sen ulottuvuudet tutkittiin haastattelemalla henkilöitä, jotka olivat jo ”onnistuneet” siinä mielessä, että olivat eläneet pitkään.
Tutkimusaineisto oli pääosin peräisin Tampereella tehtävästä Tervaskannot 90+ -tutkimuksesta. Se on koottu postikyselyin jotka kohdistuivat 90-vuotiaisiin ja sitä vanhempiin henkilöihin vuosina 2001, 2003, 2007, 2010 ja 2014. Mukana olivat sekä kotona että ympärivuorokautisessa hoitopaikassa asuvat. Osallistujamäärä näissä poikkileikkaustutkimuksissa vaihteli 892:sta 1283:een ja vastausprosentti oli joka kerralla suunnilleen 80. Lisäksi 45 iältään 90-91-vuotiasta henkilöä osallistui elämäntarinahaastatteluun vuonna 2012; tavoitteena oli ymmärtää paremmin onnistunutta vanhenemista hyvin vanhan henkilön omasta näkökulmasta. Aineistoon yhdistettiin tietoja kahdesta kansallisesta rekisteristä. Väestörekisteriin perustuvat tiedot kuolinpäivistä saatiin Tilastokeskuksesta. Terveyden ja hyvinvoinnin laitoksen Terveydenhuollon hoitoilmoitusrekisteristä ja Sosiaalihuollon hoitoilmoitusrekisteristä saatiin tiedot pitkäaikaishoidosta.
Onnistuneen vanhenemisen yleisyys vaihteli 1.6%:sta 18%:iin riippuen käytetystä mallista. Onnistunut vanheneminen oli yhteydessä sukupuolen ja asuinpaikkaan. Joissakin malleissa onnistunut vanheneminen oli yhteydessä myös nuorempaan ikään, avioliitossa oloon ja korkeampaan koulutukseen. Sellaiset onnistuneen vanhenemisen mallit, joissa sairauksien poissaolo ja kyky vaativiin toimintoihin painottuivat vähemmän, ennustivat jäljellä olevaa elinaikaa ja pitkäaikaishoitoon siirtymistä paremmin kuin vaativimmat mallit.
Elämäntarinahaastatteluissa tuli esiin fyysisen, psykologisen ja sosiaalisen toimintakyvyn merkitys. Haastateltavat pitivät kivuttomuutta tärkeämpänä…
Subjects/Keywords: good aging
;
longivity
;
survival
;
long-term care
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APA ·
Chicago ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nosraty, L. (2018). Successful aging among the oldest old
. (Doctoral Dissertation). Tampere University. Retrieved from https://trepo.tuni.fi/handle/10024/103279
Chicago Manual of Style (16th Edition):
Nosraty, Lily. “Successful aging among the oldest old
.” 2018. Doctoral Dissertation, Tampere University. Accessed March 08, 2021.
https://trepo.tuni.fi/handle/10024/103279.
MLA Handbook (7th Edition):
Nosraty, Lily. “Successful aging among the oldest old
.” 2018. Web. 08 Mar 2021.
Vancouver:
Nosraty L. Successful aging among the oldest old
. [Internet] [Doctoral dissertation]. Tampere University; 2018. [cited 2021 Mar 08].
Available from: https://trepo.tuni.fi/handle/10024/103279.
Council of Science Editors:
Nosraty L. Successful aging among the oldest old
. [Doctoral Dissertation]. Tampere University; 2018. Available from: https://trepo.tuni.fi/handle/10024/103279
University of Alberta
26.
Connor, Steven.
Neuromodulation of heterosynaptic plasticity in mouse
hippocampus.
Degree: PhD, Centre for Neuroscience, 2011, University of Alberta
URL: https://era.library.ualberta.ca/files/k35695274
► The ability of synapses to undergo lasting changes in synaptic strength is considered the primary cellular mechanism for associative memory formation in the mammalian brain.…
(more)
▼ The ability of synapses to undergo lasting changes in
synaptic strength is considered the primary cellular mechanism for
associative memory formation in the mammalian brain. Synapses in
the hippocampus, a brain structure required for new memory genesis,
exhibit a remarkable capacity for activity-dependent modification
known as "synaptic plasticity". Our understanding of the
neurobiological correlates of learning and memory has been
significantly advanced through the study of one particular form of
hippocampal synaptic plasticity known as long-term potentiation
(LTP). As LTP has been linked to long-term memory formation,
characterizing the mechanisms through which synaptic plasticity is
regulated is crucial for advancing our understanding of the brains
ability to encode and store information. Hippocampal synaptic
plasticity and long-term memory can both be enhanced through
activation of neuromodulatory receptors. Noradrenaline is an
endogenous neuromodulatory transmitter which is secreted in
response to novelty and arousing experiences. Neuromodulatory
receptor stimulation can influence synaptic plasticity in a
cell-wide manner known as heterosynaptic plasticity.
Beta-adrenergic receptor (β-AR) stimulation results in the
engagement of downstream signaling cascades capable of augmenting
synaptic function. The present thesis identifies mechanisms through
which β-ARs enhance heterosynaptic plasticity using
electrophysiological recording methods in mouse hippocampal slices.
I found that inducing homosynaptic LTP by pairing high-frequency
stimulation with beta-adrenergic receptor activation lowered the
threshold for heterosynaptic LTP. This form of heterosynaptic
plasticity was altered in a mouse model of Fragile X Syndrome (FXS)
which was the basis for my second project. When beta-adrenergic
receptor-dependent LTP was induced in hippocampal slices from
Fragile X mental retardation knockout mice, heterosynaptic LTP was
enhanced relative to wild-type littermate controls. My final
project investigated the mechanisms through which β-ARs and
muscarinic receptors synergistically regulate synaptic plasticity.
Co-application of beta-adrenergic and muscarinic receptor agonists
enhanced LTP induced by a low-frequency stimulation protocol (5 Hz,
5 s). This form of LTP requires extracellular signal-regulated
kinase and protein synthesis. Thus, I was able to further
characterize how different neuromodulatory receptors can
co-facilitate the induction of enduring synaptic plasticity which
is considered the cellular basis for formation of new
memories
Subjects/Keywords: hippocampus; synaptic plasticity; long-term potentiation
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Connor, S. (2011). Neuromodulation of heterosynaptic plasticity in mouse
hippocampus. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/k35695274
Chicago Manual of Style (16th Edition):
Connor, Steven. “Neuromodulation of heterosynaptic plasticity in mouse
hippocampus.” 2011. Doctoral Dissertation, University of Alberta. Accessed March 08, 2021.
https://era.library.ualberta.ca/files/k35695274.
MLA Handbook (7th Edition):
Connor, Steven. “Neuromodulation of heterosynaptic plasticity in mouse
hippocampus.” 2011. Web. 08 Mar 2021.
Vancouver:
Connor S. Neuromodulation of heterosynaptic plasticity in mouse
hippocampus. [Internet] [Doctoral dissertation]. University of Alberta; 2011. [cited 2021 Mar 08].
Available from: https://era.library.ualberta.ca/files/k35695274.
Council of Science Editors:
Connor S. Neuromodulation of heterosynaptic plasticity in mouse
hippocampus. [Doctoral Dissertation]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/k35695274
University of Alberta
27.
Maity, Sabyasachi.
NOREPINEPHRINE-MEDIATED SYNAPTIC PLASTICITY: A NOVEL
SIGNALING DIALOGUE BETWEEN RECEPTORS AND NUCLEUS.
Degree: PhD, Department of Physiology, 2013, University of Alberta
URL: https://era.library.ualberta.ca/files/w3763725g
► Norepinephrine (NE) helps in the consolidation and retention of memories of emotionally charged events. However, the pathway from membrane receptors to nucleus in noradrenergic signaling…
(more)
▼ Norepinephrine (NE) helps in the consolidation and
retention of memories of emotionally charged events. However, the
pathway from membrane receptors to nucleus in noradrenergic
signaling in the brain is not completely understood. The cyclic
AMP-PKA pathway is one of the most studied signaling pathways
recruited by norepinephrine to induce and maintain LTP, a cellular
correlate of long term memory. In the present study, I describe a
novel signaling mechanism of NE-mediated induction and expression
of LTP when paired with a specific stimulus protocol, through cAMP
receptors (Epac) instead of PKA. I demonstrate that this pathway
involves transcriptional and epigenetic mechanisms other than local
protein synthesis. Hence, this unique pathway may be recruited upon
novel experience to form a stable memory. Considering that many
memory-related cognitive impairments are due to altered
pathophysiology of the noradrenergic system, these results both
increase our understanding and move us closer to a possible
solution for neurological diseases involving neuromodulators like
NE.
Subjects/Keywords: Hippocampus; Epigenetic modifications; Long-term potentiation; Norepinephrine
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Maity, S. (2013). NOREPINEPHRINE-MEDIATED SYNAPTIC PLASTICITY: A NOVEL
SIGNALING DIALOGUE BETWEEN RECEPTORS AND NUCLEUS. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/w3763725g
Chicago Manual of Style (16th Edition):
Maity, Sabyasachi. “NOREPINEPHRINE-MEDIATED SYNAPTIC PLASTICITY: A NOVEL
SIGNALING DIALOGUE BETWEEN RECEPTORS AND NUCLEUS.” 2013. Doctoral Dissertation, University of Alberta. Accessed March 08, 2021.
https://era.library.ualberta.ca/files/w3763725g.
MLA Handbook (7th Edition):
Maity, Sabyasachi. “NOREPINEPHRINE-MEDIATED SYNAPTIC PLASTICITY: A NOVEL
SIGNALING DIALOGUE BETWEEN RECEPTORS AND NUCLEUS.” 2013. Web. 08 Mar 2021.
Vancouver:
Maity S. NOREPINEPHRINE-MEDIATED SYNAPTIC PLASTICITY: A NOVEL
SIGNALING DIALOGUE BETWEEN RECEPTORS AND NUCLEUS. [Internet] [Doctoral dissertation]. University of Alberta; 2013. [cited 2021 Mar 08].
Available from: https://era.library.ualberta.ca/files/w3763725g.
Council of Science Editors:
Maity S. NOREPINEPHRINE-MEDIATED SYNAPTIC PLASTICITY: A NOVEL
SIGNALING DIALOGUE BETWEEN RECEPTORS AND NUCLEUS. [Doctoral Dissertation]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/w3763725g
University of Illinois – Urbana-Champaign
28.
Sun, Renpeng.
Long-term n fertilization affects soil bacterial communities in agronomic fields.
Degree: MS, Bioinformatics, 2018, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/101360
► Soil microbial communities influence plant productivity, chemistry and structure of soil and nutrient cycling. In turn, long-term nitrogen fertilization changes soil physical and chemical properties…
(more)
▼ Soil microbial communities influence plant productivity, chemistry and structure of soil and nutrient cycling. In turn,
long-
term nitrogen fertilization changes soil physical and chemical properties and thus influences soil microbiomes. In-depth understanding of the
long-
term nitrogen fertilization effects on soil microbial communities is critical for improving fertilization practices to optimize the microbiomes for soil health, productivity and sustainability. Our goal was to characterize the microbial community structure under
long-
term N gradient treatment in continuous corn (CCC) and to investigate the response of different soil microbial groups involved in the N cycle to different N fertilization levels. Field trial in CCC on three N fertilization rates (0, 210, and 280 kg N/ha) is arranged in a randomized complete block design (RCBD) with three replications. Using 16S rRNA gene-based pyrosequencing analysis of the V4 region and DNA extracted from soil in a 33-year-old agricultural field trial, we characterized the structure, composition and nitrogen cycling function of the bacterial communities involved. The downstream bioinformatics processing and analysis were conducted with QIIME (Quantitative Insights Into Microbial Ecology). V4 region of 16S rDNA gene sequences were clustered into operational taxonomic units (OTUs) and the bacterial community composition and diversity were analyzed based on the OTUs extracted. We applied principal component analyses (PCA) and canonical discriminant analysis (CDA) to our major bacterial phyla dataset. Our results indicate that high N fertilization level tended to decrease the diversity and richness of soil bacterial community and altered the relative abundance of the major bacterial phyla. There was a significant response of different soil bacterial groups involved in the N cycle to different N fertilization levels.
Advisors/Committee Members: Villamil, Maria Bonita (advisor).
Subjects/Keywords: long-term N fertilization; soil bacterial communities
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APA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sun, R. (2018). Long-term n fertilization affects soil bacterial communities in agronomic fields. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/101360
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):
Sun, Renpeng. “Long-term n fertilization affects soil bacterial communities in agronomic fields.” 2018. Thesis, University of Illinois – Urbana-Champaign. Accessed March 08, 2021.
http://hdl.handle.net/2142/101360.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sun, Renpeng. “Long-term n fertilization affects soil bacterial communities in agronomic fields.” 2018. Web. 08 Mar 2021.
Vancouver:
Sun R. Long-term n fertilization affects soil bacterial communities in agronomic fields. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2018. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2142/101360.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sun R. Long-term n fertilization affects soil bacterial communities in agronomic fields. [Thesis]. University of Illinois – Urbana-Champaign; 2018. Available from: http://hdl.handle.net/2142/101360
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Oxford
29.
Martin, Andrew C.
Long-term interactions between shrub growth and soil nitrogen availability in the Western Siberian tundra : application of mechanistic modelling approaches using wood-ring data.
Degree: PhD, 2020, University of Oxford
URL: http://ora.ox.ac.uk/objects/uuid:da76ecb1-1b3a-4b59-ace6-7e30bc98f835
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808352
► Rationale: Shrub growth and expansion is occurring in the Arctic, with implications for global climate. Multiple strands of evidence demonstrate an important role of recent…
(more)
▼ Rationale: Shrub growth and expansion is occurring in the Arctic, with implications for global climate. Multiple strands of evidence demonstrate an important role of recent increases in tundra air temperatures in enhanced growth of deciduous shrubs at the expense of graminoids and mosses, commonly termed ‘shrubification’. However, shrub growth responses are heterogeneous through both space and time, as evidenced by: (a) meta-analyses of the climate-sensitivity of shrub wood production through time; and (b) progressive declines in the strength of the relationship between remotely sensed vegetation productivity and warming air temperatures. It is plausible that – over decades – soil nitrogen (N) availability may contribute to the observed heterogeneity of shrub growth sensitivity to climate. My key aim was to quantify and identify the presence of N-limitation to shrub growth and its variability in space and through time in Western Siberia, Russia. Method: First, to determine the status of the evidence base for alternative controls on shrub growth, including soil N, I created and followed an evidence mapping protocol to generate a spatial- temporal evidence map. Second, I analysed stable nitrogen isotope ratios (δ¹⁵N) in Salix lanata L. shrub wood rings, which provided annually resolved time-series to indicate local-scale N availability. I created annual resolution δ¹⁵N time series for ten individuals at Yuribei (1980-2013), Yamal Peninsula, and three-yearly resolution time-series for ten shrub individuals at each of three sites within Western Siberia (1940-2013). I interrogated the δ¹⁵N and ring width time-series for shrub individuals by creating mechanistic representations of shrub-nitrogen dynamics; I then identified the most appropriate representations of N-dependency and other environmental constraints on individual shrub growth. Third, I assessed the role of snow dynamics in controlling the relations between nitrogen and shrub growth by extending the modelling approach to incorporate seasonality. Here, snow variability was proxied at a regional scale by earth observation and a local scale by the investigation of δ18O and δ13C isotope time series from wood rings. A software library, Bristlecone, was developed and used to conduct model-fitting and model-selection of mechanistic models. Results: First, the evidence map identified that there were spatial-temporal limitations within the recent evidence for controls on Arctic shrubification processes, including constraints on the temporal extent and resolution of N-limitation effects on shrub growth. Second, reconstructed δ¹⁵N time-series indicated that declines in N availability to the Salix lanata shrubs have occurred over decades. Although declines in soil N were observed in Arctic bioclimatic subzones D and E, different trajectories occurred at fine spatial resolution. Interrogation of the δ¹⁵N and ring width time-series indicated that the growth of all shrub individuals assessed has been N-limited; and for a majority of these, plant-soil litter feedbacks were a…
Subjects/Keywords: Dendroecology; Arctic ecology; Long-Term Ecology
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APA ·
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Manager
APA (6th Edition):
Martin, A. C. (2020). Long-term interactions between shrub growth and soil nitrogen availability in the Western Siberian tundra : application of mechanistic modelling approaches using wood-ring data. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:da76ecb1-1b3a-4b59-ace6-7e30bc98f835 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808352
Chicago Manual of Style (16th Edition):
Martin, Andrew C. “Long-term interactions between shrub growth and soil nitrogen availability in the Western Siberian tundra : application of mechanistic modelling approaches using wood-ring data.” 2020. Doctoral Dissertation, University of Oxford. Accessed March 08, 2021.
http://ora.ox.ac.uk/objects/uuid:da76ecb1-1b3a-4b59-ace6-7e30bc98f835 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808352.
MLA Handbook (7th Edition):
Martin, Andrew C. “Long-term interactions between shrub growth and soil nitrogen availability in the Western Siberian tundra : application of mechanistic modelling approaches using wood-ring data.” 2020. Web. 08 Mar 2021.
Vancouver:
Martin AC. Long-term interactions between shrub growth and soil nitrogen availability in the Western Siberian tundra : application of mechanistic modelling approaches using wood-ring data. [Internet] [Doctoral dissertation]. University of Oxford; 2020. [cited 2021 Mar 08].
Available from: http://ora.ox.ac.uk/objects/uuid:da76ecb1-1b3a-4b59-ace6-7e30bc98f835 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808352.
Council of Science Editors:
Martin AC. Long-term interactions between shrub growth and soil nitrogen availability in the Western Siberian tundra : application of mechanistic modelling approaches using wood-ring data. [Doctoral Dissertation]. University of Oxford; 2020. Available from: http://ora.ox.ac.uk/objects/uuid:da76ecb1-1b3a-4b59-ace6-7e30bc98f835 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.808352
Royal Holloway, University of London
30.
Hernandez, Ivan.
Analysis and interpretation of ambient data for CO2, CH4 and CO recorded in Southwest London during 2000 to 2012.
Degree: PhD, 2014, Royal Holloway, University of London
URL: https://pure.royalholloway.ac.uk/portal/en/publications/analysis-and-interpretation-of-ambient-data-for-co2-ch4-and-co-recorded-in-southwest-london-during-2000-to-2012(86d0b9ad-7c70-426b-98c0-4879134bae33).html
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792235
► CO2 and CH4 current levels are the highest recorded during the Anthropocene epoch due, mostly, to emissions from anthropogenic activities. These emissions have modified the…
(more)
▼ CO2 and CH4 current levels are the highest recorded during the Anthropocene epoch due, mostly, to emissions from anthropogenic activities. These emissions have modified the biochemical cycle of C and earth's thermal equilibrium. In contrast, CO emissions have decreased since 2000 following the strict controls on vehicle emissions. Atmospheric observations can be used to detect trends and changes in CO2, CH4 and CO concentrations, and also, to locate and characterize natural and anthropogenic sources. In situ measurements of atmospheric CO2, CH4 and CO have been performed at Royal Holloway University of London since 2000 to 2012 and standardised using NOAA calibration gases. CO2, CH4 and CO varied on time scales ranging from minutes to inter-annual and annual cycles. Diurnal cycles were observed and varied with the length daylight which influences the net soil uptake of CO2, the concentration of OH radicals and, the degree of vertical mixing. There is a greater influence of CO2 and CO anthropogenic emissions during weekdays when fossil fuel use and combustion processes are higher than at weekends not observed for CH4. CO2 showed an increasing trend of 2.45 ppm yr-1 data for the whole dataset; a higher rate of increase than the observed global trend due to higher regional combustion emissions such as airplanes, houses and cars on highly loaded motorways. By contrast, CO showed a progressive decline not linear, but if linearized the decline rate was 15.3 ppb CO yr-1, while CH4 concentration remained steady. The data set was split into 8 categories (45°) using wind sector analysis. This shows that the greatest concentrations for the three carbon gas are recorded from the NE, E and SE sectors. The lowest concentrations were observed for air from the S and SW sectors. Back trajectory and meteorological analysis of the data confirmed that the dominant sources of CO2, CH4 and CO are anthropogenic emissions from Greater London area and the dense local road network to the East of the measurement site. Nowadays, compared with Mace Head (West Ireland) data, the CO2 measured at Egham is slightly higher than at Mace Head while CO and CH4 is not far above Atlantic background levels during large periods of the year when prevailing S-SW winds reach the site. The Egham record implies that controls on CO emissions subsequent to legislation have been extremely successful the UK.
Subjects/Keywords: long-term trend; seasonal cycle; Air pollutants
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Manager
APA (6th Edition):
Hernandez, I. (2014). Analysis and interpretation of ambient data for CO2, CH4 and CO recorded in Southwest London during 2000 to 2012. (Doctoral Dissertation). Royal Holloway, University of London. Retrieved from https://pure.royalholloway.ac.uk/portal/en/publications/analysis-and-interpretation-of-ambient-data-for-co2-ch4-and-co-recorded-in-southwest-london-during-2000-to-2012(86d0b9ad-7c70-426b-98c0-4879134bae33).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792235
Chicago Manual of Style (16th Edition):
Hernandez, Ivan. “Analysis and interpretation of ambient data for CO2, CH4 and CO recorded in Southwest London during 2000 to 2012.” 2014. Doctoral Dissertation, Royal Holloway, University of London. Accessed March 08, 2021.
https://pure.royalholloway.ac.uk/portal/en/publications/analysis-and-interpretation-of-ambient-data-for-co2-ch4-and-co-recorded-in-southwest-london-during-2000-to-2012(86d0b9ad-7c70-426b-98c0-4879134bae33).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792235.
MLA Handbook (7th Edition):
Hernandez, Ivan. “Analysis and interpretation of ambient data for CO2, CH4 and CO recorded in Southwest London during 2000 to 2012.” 2014. Web. 08 Mar 2021.
Vancouver:
Hernandez I. Analysis and interpretation of ambient data for CO2, CH4 and CO recorded in Southwest London during 2000 to 2012. [Internet] [Doctoral dissertation]. Royal Holloway, University of London; 2014. [cited 2021 Mar 08].
Available from: https://pure.royalholloway.ac.uk/portal/en/publications/analysis-and-interpretation-of-ambient-data-for-co2-ch4-and-co-recorded-in-southwest-london-during-2000-to-2012(86d0b9ad-7c70-426b-98c0-4879134bae33).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792235.
Council of Science Editors:
Hernandez I. Analysis and interpretation of ambient data for CO2, CH4 and CO recorded in Southwest London during 2000 to 2012. [Doctoral Dissertation]. Royal Holloway, University of London; 2014. Available from: https://pure.royalholloway.ac.uk/portal/en/publications/analysis-and-interpretation-of-ambient-data-for-co2-ch4-and-co-recorded-in-southwest-london-during-2000-to-2012(86d0b9ad-7c70-426b-98c0-4879134bae33).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792235
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