subject:(Connectivity)

1. Ard, Tyler. Large-Scale Cortical Electromagnetic Functional Connectivity during Audiovisual Processing.

Degree: PhD, Neuroscience, 2014, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:386160/

► Auditory and visual information interact in the brain to produce a wide variety of behavioral and cognitive phenomena, however much is unknown about the mechanisms… (more)

▼ Auditory and visual information interact in the brain to produce a wide variety of behavioral and cognitive phenomena, however much is unknown about the mechanisms of these interactions. In this thesis I investigate functional networks determined by neural electromagnetic signals in order to investigate dynamic cortical communication present during audiovisual interactions. The goal of this research is to not only outline the contributions of various functional links between brain regions during different types of audiovisual interactions, but additionally to investigate what types of electromagnetic relationships are present between communicating areas. I find that correlations of beta power directly illustrate connectivity between auditory and visual areas during audiovisual integration. Specifically, co-fluctuations of beta power are seen between R-V4/V5 and R-auditory cortex when tracking an audiovisual object. Additional investigations of beta-power functional networks during audiovisual searching show an indirect audiovisual integrative route, bridging auditory and visual cortex through a fronto-parietal network. Further, these connections varied with task performance and strategy as well as showed changes over training. The strength of the fronto-parietal network links are positively correlated with the speed at which subjects performed their audiovisual search. Large changes over training were in low level visual cortex during searching, indicating that as an audiovisual search becomes more trained, lower level cortices become more involved. Fronto-parietal connections, as well as auditory and visual cortical links to the fronto-parietal network were correlated with how much subjects used auditory information to drive their visual search, indicating a top-down, task-driven audiovisual integrative route. We conclude these findings not only implicate differential functional network pathways underlying audiovisual tracking and searching, but further indicate that beta power correlations are a robust measure of cortical communication with direct behavioral relevance, not limited to auditory and visual areas. Advisors/Committee Members: Coppola, Ricahrd (Director), Sanes, Jerome (Reader), Horwitz, Barry (Reader), Gaetz, William (Reader).

Subjects/Keywords: functional connectivity

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APA (6^th Edition):

Ard, T. (2014). Large-Scale Cortical Electromagnetic Functional Connectivity during Audiovisual Processing. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:386160/

Chicago Manual of Style (16^th Edition):

Ard, Tyler. “Large-Scale Cortical Electromagnetic Functional Connectivity during Audiovisual Processing.” 2014. Doctoral Dissertation, Brown University. Accessed February 27, 2021. https://repository.library.brown.edu/studio/item/bdr:386160/.

MLA Handbook (7^th Edition):

Ard, Tyler. “Large-Scale Cortical Electromagnetic Functional Connectivity during Audiovisual Processing.” 2014. Web. 27 Feb 2021.

Vancouver:

Ard T. Large-Scale Cortical Electromagnetic Functional Connectivity during Audiovisual Processing. [Internet] [Doctoral dissertation]. Brown University; 2014. [cited 2021 Feb 27]. Available from: https://repository.library.brown.edu/studio/item/bdr:386160/.

Council of Science Editors:

Ard T. Large-Scale Cortical Electromagnetic Functional Connectivity during Audiovisual Processing. [Doctoral Dissertation]. Brown University; 2014. Available from: https://repository.library.brown.edu/studio/item/bdr:386160/

2. Fiecas, Mark Joseph A. Statistical Methods for the Analysis of Functional Connectivity of Brain Signals.

Degree: PhD, Biostatistics, 2012, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:297535/

► In this dissertation we investigated and proposed tools for the analysis of functional connectivity of brain signals. We first investigated the test-retest reliability of current… (more)

▼ In this dissertation we investigated and proposed tools for the analysis of functional connectivity of brain signals. We first investigated the test-retest reliability of current methods used for functional connectivity analyses. Three resting-state fMRI scans were obtained from twenty-five subjects. The protocol between scanning sessions did not change, and so ideally, measures of dependencies between different regions of the brain do not change with respect to the session and are robust to noise. We quantified dependencies using various measures of dependencies and assessed their performance via a test-retest analysis. Next, we proposed a new statistical method, called the generalized shrinkage estimator, for investigating dependencies in the frequency domain between neurophysiological signals. The generalized shrinkage estimator is a weighted average of a parametric estimator and a nonparametric estimator, both of which are the current popular methods for spectral analysis. The optimal weights are frequency-specific and were derived under the quadratic risk criterion so that the estimator, either the parametric estimator or the nonparametric estimator, that performs better at a particular frequency receives heavier weight. We validated the proposed estimator in a simulation study and applied it on electroencephalogram recordings from a visual-motor experiment. Finally, we introduced a new modeling framework for analyzing nonidentical and nonstationary neurophysiological signals. In this framework, the spectral properties of the data which are evolving over time within a replicate are also evolving over the replications. We proposed a novel statistical model and corresponding two-stage estimation approach for estimating the spectral properties of the time series data that addresses these two sources of nonstationarity. The first stage accounted for nonstationarity over time within a replicate using local periodogram matrices. The second stage addresses the nonstationarity over the replications via wavelet regression, where we pooled the wavelet coefficients to further smooth our estimates. In this work we showed that the evolutionary spectral properties of the local field potentials (LFPs) obtained from the nucleus accumbens and the hippocampus evolved over the course of a learning association experiment. Advisors/Committee Members: Ombao, Hernando (Director), Kim, Eunhee (Reader), Sanes, Jerome (Reader), von Sachs, Rainer (Reader).

Subjects/Keywords: Functional connectivity

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APA (6^th Edition):

Fiecas, M. J. A. (2012). Statistical Methods for the Analysis of Functional Connectivity of Brain Signals. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:297535/

Chicago Manual of Style (16^th Edition):

Fiecas, Mark Joseph A. “Statistical Methods for the Analysis of Functional Connectivity of Brain Signals.” 2012. Doctoral Dissertation, Brown University. Accessed February 27, 2021. https://repository.library.brown.edu/studio/item/bdr:297535/.

MLA Handbook (7^th Edition):

Fiecas, Mark Joseph A. “Statistical Methods for the Analysis of Functional Connectivity of Brain Signals.” 2012. Web. 27 Feb 2021.

Vancouver:

Fiecas MJA. Statistical Methods for the Analysis of Functional Connectivity of Brain Signals. [Internet] [Doctoral dissertation]. Brown University; 2012. [cited 2021 Feb 27]. Available from: https://repository.library.brown.edu/studio/item/bdr:297535/.

Council of Science Editors:

Fiecas MJA. Statistical Methods for the Analysis of Functional Connectivity of Brain Signals. [Doctoral Dissertation]. Brown University; 2012. Available from: https://repository.library.brown.edu/studio/item/bdr:297535/

Halmstad University

3. Kandimalla, Jyothi Manju Bhargavi; Vanam, Aditya. Wireless Network Connectivity Measure.

Degree: Computer and Electrical Engineering (IDE), 2011, Halmstad University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16655

► The efficiency to which a wireless multi node network is connected is generally measured by the probability that all the nodes are connected to… (more)

Subjects/Keywords: network; connectivity

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APA (6^th Edition):

Kandimalla, Jyothi Manju Bhargavi; Vanam, A. (2011). Wireless Network Connectivity Measure. (Thesis). Halmstad University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16655

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kandimalla, Jyothi Manju Bhargavi; Vanam, Aditya. “Wireless Network Connectivity Measure.” 2011. Thesis, Halmstad University. Accessed February 27, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16655.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kandimalla, Jyothi Manju Bhargavi; Vanam, Aditya. “Wireless Network Connectivity Measure.” 2011. Web. 27 Feb 2021.

Vancouver:

Kandimalla, Jyothi Manju Bhargavi; Vanam A. Wireless Network Connectivity Measure. [Internet] [Thesis]. Halmstad University; 2011. [cited 2021 Feb 27]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16655.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kandimalla, Jyothi Manju Bhargavi; Vanam A. Wireless Network Connectivity Measure. [Thesis]. Halmstad University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16655

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

4. Demiralp, Cagatay. Computational Brain Connectivity Using Diffusion MRI.

Degree: PhD, Computer Science, 2012, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:320512/

► This dissertation shows that qualitative and quantitative characterization of patterned structures in brain connectivity data obtained using diffusion MRI not only improves the exploration of… (more)

▼ This dissertation shows that qualitative and quantitative characterization of patterned structures in brain connectivity data obtained using diffusion MRI not only improves the exploration of the intricate space of brain connectivity but also provides clinically meaningful measures, quantifying normal and pathological variation in the brain. To this end, we introduce a set of computational and mathematical models, algorithms, and interactive tools to explore, understand, and characterize diffusion-derived structural brain connectivity. We contribute to all stages of modeling, visualization, and analysis of brain connectivity. In modeling, our contributions are twofold. First, we model the joint distribution of local neural fiber configurations with Markov random fields and infer the most likely configuration with maximum a posteriori estimation. We demonstrate this framework's use in resolving fiber crossings. Second, we introduce new planar map representations of three-dimensional neural tract datasets. These planar representations improve the exploration of brain connectivity by reducing visual and interaction complexity. In visualization, we contribute to structure-preserving color mappings. First, we introduce Boy's surface as a model for coloring 3D line fields and show results from its application in visualizing orientation in diffusion MRI brain datasets. This coloring method is smooth and one-to-one except on a set of measure zero. Second, we propose a general coloring method based on manifold embedding that conveys spatial relations among neural fiber tracts perceptually. We also introduce a new bivariate coloring model, the flat torus, that allows finer adjustments of coloring arbitrarily. We contribute to both local and global analysis of brain connectivity. In local analysis, we introduce a geometric slicing-based coherence measure for clusters of neural tracts. Clustering refinement based on this measure leads to a significant improvement in clustering quality that is not possible directly with standard methods. We also introduce tract-based probability density functions and demonstrate their effective use in nonparametric hypothesis testing and classification. In global analysis, we propose computing the ranks of persistent homology groups in the neural tract space. This captures the effects of diffuse axonal dropout and provides a global descriptor of structural brain connectivity. Advisors/Committee Members: Laidlaw, David (Director), Hughes, John (Reader), Mumford, David (Reader).

Subjects/Keywords: Computational brain connectivity

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APA (6^th Edition):

Demiralp, C. (2012). Computational Brain Connectivity Using Diffusion MRI. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:320512/

Chicago Manual of Style (16^th Edition):

Demiralp, Cagatay. “Computational Brain Connectivity Using Diffusion MRI.” 2012. Doctoral Dissertation, Brown University. Accessed February 27, 2021. https://repository.library.brown.edu/studio/item/bdr:320512/.

MLA Handbook (7^th Edition):

Demiralp, Cagatay. “Computational Brain Connectivity Using Diffusion MRI.” 2012. Web. 27 Feb 2021.

Vancouver:

Demiralp C. Computational Brain Connectivity Using Diffusion MRI. [Internet] [Doctoral dissertation]. Brown University; 2012. [cited 2021 Feb 27]. Available from: https://repository.library.brown.edu/studio/item/bdr:320512/.

Council of Science Editors:

Demiralp C. Computational Brain Connectivity Using Diffusion MRI. [Doctoral Dissertation]. Brown University; 2012. Available from: https://repository.library.brown.edu/studio/item/bdr:320512/

5. Shaffer, Megan. Species boundaries, reproduction and connectivity patterns for sympatric Tethya species on New Zealand temperate reefs.

Degree: 2019, Victoria University of Wellington

URL: http://hdl.handle.net/10063/8080

► Understanding the evolutionary forces that shape populations in the marine environment is critical for predicting population dynamics and dispersal patterns for marine organisms. For organisms… (more)

▼ Understanding the evolutionary forces that shape populations in the marine environment is critical for predicting population dynamics and dispersal patterns for marine organisms. For organisms with complex reproductive strategies, this remains a challenge. Sponges fulfil many functional roles and are important components of benthic environments in tropical, temperate and polar oceans. They have evolved diverse reproductive strategies, reproducing both sexually and asexually, and thus provide an opportunity to investigate complicated evolutionary questions. This PhD thesis examines sexual and asexual reproduction in two common golf-ball sponges in central New Zealand (Tethya bergquistae and T. burtoni), with particular focus on how the environment influences these modes of reproduction, and further, how they shape species delineations and connectivity patterns. New Zealand waters are projected to experience increases in temperature and decreases in nutrients over the next century, and therefore these species may be experience changes in basic organismal processes like reproduction due to climate change, requiring adaptation to local environments. Therefore, this work has important implications when considering how reproductive phenology, genetic diversity and population structure of marine populations may change with shifts in climate. In my first data chapter, I highlight the difficulty in delineating sponge species by investigating the evolutionary relationship of Tethya spp. in central New Zealand using both morphological and molecular methods. Phylogenetic reconstructions based on two mitochondrial markers (rnl, COI-ext) and one nuclear marker (18S) revealed three genetic clades, with one clade representing T. bergquistae and two clades belonging to what was a priori thought to be a single species, T. burtoni. Morphological analysis based on spicule characteristics allowed T. bergquistae to be distinguished from T. burtoni, but revealed no apparent differences between the T. burtoni clades. These results indicate hidden genetic diversity within T. burtoni, which likely represents a group consisting of incipient species that have undergone speciation but have yet to express clear morphological differences. This chapter supports the notion that cryptic speciation in sponges may go undetected and diversity underestimated when using only morphology-based taxonomy, a result which has implications for conservation and management of marine systems. In my second data chapter, I characterize the reproductive biology for both species of Tethya in relation to potential environmental drivers, including sea surface temperature, chlorophyll-a concentration and rainfall. Using histological methods for sponges collected monthly over two years, Tethya spp. were found to be gonochoristic and oviparous sexual reproducers, with one annual reproductive event occurring in the austral summer from January to March. Differences in oocyte density and reproductive output between both species and sites highlighted both species-specific… Advisors/Committee Members: Bell, James, Davy, Simon.

Subjects/Keywords: Sponges; Reproduction; Connectivity

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APA (6^th Edition):

Shaffer, M. (2019). Species boundaries, reproduction and connectivity patterns for sympatric Tethya species on New Zealand temperate reefs. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/8080

Chicago Manual of Style (16^th Edition):

Shaffer, Megan. “Species boundaries, reproduction and connectivity patterns for sympatric Tethya species on New Zealand temperate reefs.” 2019. Doctoral Dissertation, Victoria University of Wellington. Accessed February 27, 2021. http://hdl.handle.net/10063/8080.

MLA Handbook (7^th Edition):

Shaffer, Megan. “Species boundaries, reproduction and connectivity patterns for sympatric Tethya species on New Zealand temperate reefs.” 2019. Web. 27 Feb 2021.

Vancouver:

Shaffer M. Species boundaries, reproduction and connectivity patterns for sympatric Tethya species on New Zealand temperate reefs. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10063/8080.

Council of Science Editors:

Shaffer M. Species boundaries, reproduction and connectivity patterns for sympatric Tethya species on New Zealand temperate reefs. [Doctoral Dissertation]. Victoria University of Wellington; 2019. Available from: http://hdl.handle.net/10063/8080

Victoria University of Wellington

6. Macaya Horta, Erasmo Carlos. Phylogeny, Connectivity and Dispersal Patterns of the Giant Kelp Macrocystis (Phaeophyceae).

Degree: 2010, Victoria University of Wellington

URL: http://hdl.handle.net/10063/1495

► Macrocystis represents the most widely distributed kelp genus, providing structure and energy for one of the most productive ecosystems on earth. Despite its ecological and… (more)

▼ Macrocystis represents the most widely distributed kelp genus, providing structure and energy for one of the most productive ecosystems on earth. Despite its ecological and economical importance, many aspects of its taxonomy, distribution and dispersal still remain unknown. Using different molecular markers I studied the taxonomy, phylogeography and dispersal patterns of Macrocystis. The analysis involves samples from different populations throughout the world. Using the DNA barcoding method I, confirmed previous suggestions that the genus must be considered as monospecific, M. pyrifera being the only species. The effects of historical and contemporary events on the haplotype distribution were determined by analyzing samples from the southeastern Pacific (SEP) using the atp8-S mitochondrial marker. The last glacial maximum as well as oceanographic anomalies (El Niño phenomena) may be important factors driving the genetic pattern along the SEP. The genetic structure in southern Chile was also analyzed in more detail, especially in the Chilean Fjords. Samples from attached and floating kelp individuals revealed that dispersal via kelp rafts is possible. Finally, a global analysis using COI sequences showed shared haplotypes along vast distances in the Northern and Southern hemispheres, recent dispersal and high gene flow can explain such genetic homogeneity. Additionally, microsatellite analysis confirmed that gene flow along the Southern Ocean is occurring over ecological time scales, where rafting of detached reproductive kelps seems to be facilitated by the Antarctic Circumpolar Current connecting populations in the Southern Hemisphere. This study has provided valuable genetic evidence to understand factors shaping the genetic structure of this important ecologically and economically species. It also contributes important knowledge for conservation and management strategies, especially in places where M. pyrifera has been harvested. In summary, the results of this study confirm previous suggestions of high gene flow among M. pyrifera populations at different scales. It also provides evidence suggesting that kelp rafts act as an important dispersal mechanism in this species, thus giving important information to understand the factors shaping the evolution of the largest seaweed on earth. Advisors/Committee Members: Zuccarello, Joe.

Subjects/Keywords: Connectivity; Dispersal; Macrocystis

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APA (6^th Edition):

Macaya Horta, E. C. (2010). Phylogeny, Connectivity and Dispersal Patterns of the Giant Kelp Macrocystis (Phaeophyceae). (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/1495

Chicago Manual of Style (16^th Edition):

Macaya Horta, Erasmo Carlos. “Phylogeny, Connectivity and Dispersal Patterns of the Giant Kelp Macrocystis (Phaeophyceae).” 2010. Doctoral Dissertation, Victoria University of Wellington. Accessed February 27, 2021. http://hdl.handle.net/10063/1495.

MLA Handbook (7^th Edition):

Macaya Horta, Erasmo Carlos. “Phylogeny, Connectivity and Dispersal Patterns of the Giant Kelp Macrocystis (Phaeophyceae).” 2010. Web. 27 Feb 2021.

Vancouver:

Macaya Horta EC. Phylogeny, Connectivity and Dispersal Patterns of the Giant Kelp Macrocystis (Phaeophyceae). [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2010. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10063/1495.

Council of Science Editors:

Macaya Horta EC. Phylogeny, Connectivity and Dispersal Patterns of the Giant Kelp Macrocystis (Phaeophyceae). [Doctoral Dissertation]. Victoria University of Wellington; 2010. Available from: http://hdl.handle.net/10063/1495

Victoria University of Wellington

7. Salinas de León, Pelayo. Patterns of Connectivity and Isolation in Marine Populations.

Degree: 2010, Victoria University of Wellington

URL: http://hdl.handle.net/10063/1679

► There is ongoing debate about the levels of connectivity among marine populations and despite its importance, there is limited information on the levels of population… (more)

▼ There is ongoing debate about the levels of connectivity among marine populations and despite its importance, there is limited information on the levels of population connectivity in most geographic locations. This lack of information severely limits our ability to adequately manage the marine environment including the design and implementation of Marine Reserve (MRs) networks. The specific objectives of this thesis were to: 1) Develop polymorphic microsatellite loci for my model species, the intertidal gastropod Austrolittorina cincta; 2) Conduct population genetic studies across A.cincta populations within the Cook strait region to asses the levels of connectivity within the regional marine reserve network; 3) Determine the levels of A. cincta larval movement and settlement from an isolated source; and 4) Asses the effect of the larval abundance on settlement rates. This thesis includes laboratory studies; population genetic studies; and field surveys within New Zealand and in the Wakatobi National Park, Indonesia. Eight novel polymorphic microsatellite loci were developed for A. cincta and five of these loci were used to investigate population connectivity across seven populations within the Cook Strait region, including four marine reserves. In the population genetics study, in contrast to what was expected, I recorded low, but significant genetic differentiation between most population pairs within the Cook Strait region, over a minimum and maximum spatial scale of 55 to 300 km, including several of the MRs. In a large-scale field settlement survey on the Kapiti coast combined with the use of microsatellite markers I investigated A. cincta larval movement and settlement and found that most larvae settle within 5 km, although some larvae might travel up to 50 km. Finally, the coral settlement studies in the Wakatobi National Park revealed lower coral settlement rates at sites with low adult coral cover, suggesting an effect of the the amount of local available larvae on coral settlement rates. While it has been suggested that marine populations are demographically open, with larvae connecting populations separated over large spatial scales, this thesis shows that populations might not be as open as previously considered and localized dispersal and self-recruitment processes might be a frequent feature in marine populations. This thesis provides valuable information to managers about marine reserve networks and the importance of adequate environmental protection to ensure future viable populations. Advisors/Committee Members: Bell, James J.

Subjects/Keywords: Marine; Connectivity; Reserves

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APA (6^th Edition):

Salinas de León, P. (2010). Patterns of Connectivity and Isolation in Marine Populations. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/1679

Chicago Manual of Style (16^th Edition):

Salinas de León, Pelayo. “Patterns of Connectivity and Isolation in Marine Populations.” 2010. Doctoral Dissertation, Victoria University of Wellington. Accessed February 27, 2021. http://hdl.handle.net/10063/1679.

MLA Handbook (7^th Edition):

Salinas de León, Pelayo. “Patterns of Connectivity and Isolation in Marine Populations.” 2010. Web. 27 Feb 2021.

Vancouver:

Salinas de León P. Patterns of Connectivity and Isolation in Marine Populations. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2010. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10063/1679.

Council of Science Editors:

Salinas de León P. Patterns of Connectivity and Isolation in Marine Populations. [Doctoral Dissertation]. Victoria University of Wellington; 2010. Available from: http://hdl.handle.net/10063/1679

Victoria University of Wellington

8. Clark, Ben. Tangles, Trees and Flowers.

Degree: 2011, Victoria University of Wellington

URL: http://hdl.handle.net/10063/1704

► A tangle of order k in a connectivity function λ may be thought of as a "k-connected component" of λ. For a connectivity function λ… (more)

Subjects/Keywords: Matroid; Connectivity; Tangles

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APA (6^th Edition):

Clark, B. (2011). Tangles, Trees and Flowers. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/1704

Chicago Manual of Style (16^th Edition):

Clark, Ben. “Tangles, Trees and Flowers.” 2011. Masters Thesis, Victoria University of Wellington. Accessed February 27, 2021. http://hdl.handle.net/10063/1704.

MLA Handbook (7^th Edition):

Clark, Ben. “Tangles, Trees and Flowers.” 2011. Web. 27 Feb 2021.

Vancouver:

Clark B. Tangles, Trees and Flowers. [Internet] [Masters thesis]. Victoria University of Wellington; 2011. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10063/1704.

Council of Science Editors:

Clark B. Tangles, Trees and Flowers. [Masters Thesis]. Victoria University of Wellington; 2011. Available from: http://hdl.handle.net/10063/1704

Victoria University of Wellington

9. Marriage, Guy Lewis Gerard. Significant Social Space: Connecting Circulation in Atrium Design.

Degree: 2012, Victoria University of Wellington

URL: http://hdl.handle.net/10063/2597

► This thesis examines visual and physical connectivity in multi-level public atrium spaces in modern public buildings, and seeks out common factors and key design principles… (more)

Subjects/Keywords: Atrium; Connectivity; Space

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APA (6^th Edition):

Marriage, G. L. G. (2012). Significant Social Space: Connecting Circulation in Atrium Design. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/2597

Chicago Manual of Style (16^th Edition):

Marriage, Guy Lewis Gerard. “Significant Social Space: Connecting Circulation in Atrium Design.” 2012. Masters Thesis, Victoria University of Wellington. Accessed February 27, 2021. http://hdl.handle.net/10063/2597.

MLA Handbook (7^th Edition):

Marriage, Guy Lewis Gerard. “Significant Social Space: Connecting Circulation in Atrium Design.” 2012. Web. 27 Feb 2021.

Vancouver:

Marriage GLG. Significant Social Space: Connecting Circulation in Atrium Design. [Internet] [Masters thesis]. Victoria University of Wellington; 2012. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10063/2597.

Council of Science Editors:

Marriage GLG. Significant Social Space: Connecting Circulation in Atrium Design. [Masters Thesis]. Victoria University of Wellington; 2012. Available from: http://hdl.handle.net/10063/2597

University of Sydney

10. Pandejee, Grishma Riken. Prediction and Analysis of Connectivity in the Brain .

Degree: 2018, University of Sydney

URL: http://hdl.handle.net/2123/18179

► Neural brain connectivity has three aspects: a physical connection between different brain regions – termed anatomical connectivity; a mutual relationship between dynamical activities between different… (more)

Subjects/Keywords: Functional connectivity; Effective connectivity; Anatomical connectivity; Multistep connections; Brain lesion; includes published articles

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APA (6^th Edition):

Pandejee, G. R. (2018). Prediction and Analysis of Connectivity in the Brain . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/18179

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pandejee, Grishma Riken. “Prediction and Analysis of Connectivity in the Brain .” 2018. Thesis, University of Sydney. Accessed February 27, 2021. http://hdl.handle.net/2123/18179.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pandejee, Grishma Riken. “Prediction and Analysis of Connectivity in the Brain .” 2018. Web. 27 Feb 2021.

Vancouver:

Pandejee GR. Prediction and Analysis of Connectivity in the Brain . [Internet] [Thesis]. University of Sydney; 2018. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2123/18179.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pandejee GR. Prediction and Analysis of Connectivity in the Brain . [Thesis]. University of Sydney; 2018. Available from: http://hdl.handle.net/2123/18179

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Pretoria

11. [No author]. Public information resource centre : knowledge transference, connectivity, community .

Degree: 2011, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-12092010-120427/

► The project is situated within the underdeveloped periphery of Mamelodi. It addresses urban issues of connectivity at a physical, spatial and educational level, as a… (more)

Subjects/Keywords: Connectivity; Information transference; Community; UCTD

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APA (6^th Edition):

author], [. (2011). Public information resource centre : knowledge transference, connectivity, community . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-12092010-120427/

Chicago Manual of Style (16^th Edition):

author], [No. “Public information resource centre : knowledge transference, connectivity, community .” 2011. Masters Thesis, University of Pretoria. Accessed February 27, 2021. http://upetd.up.ac.za/thesis/available/etd-12092010-120427/.

MLA Handbook (7^th Edition):

author], [No. “Public information resource centre : knowledge transference, connectivity, community .” 2011. Web. 27 Feb 2021.

Vancouver:

author] [. Public information resource centre : knowledge transference, connectivity, community . [Internet] [Masters thesis]. University of Pretoria; 2011. [cited 2021 Feb 27]. Available from: http://upetd.up.ac.za/thesis/available/etd-12092010-120427/.

Council of Science Editors:

author] [. Public information resource centre : knowledge transference, connectivity, community . [Masters Thesis]. University of Pretoria; 2011. Available from: http://upetd.up.ac.za/thesis/available/etd-12092010-120427/

Vanderbilt University

12. Fan, Qiuyun. Diffusion Tensor Imaging reveals correlations between brain connectivity and children's reading abilities.

Degree: MS, Biomedical Engineering, 2011, Vanderbilt University

URL: http://hdl.handle.net/1803/11518

► This study demonstrated the relationship between brain connectivity and children’s reading abilities. For the behavioral part, the participants received proper reading interventions based on their… (more)

Subjects/Keywords: DTI; brain connectivity; reading

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APA (6^th Edition):

Fan, Q. (2011). Diffusion Tensor Imaging reveals correlations between brain connectivity and children's reading abilities. (Thesis). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/11518

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Fan, Qiuyun. “Diffusion Tensor Imaging reveals correlations between brain connectivity and children's reading abilities.” 2011. Thesis, Vanderbilt University. Accessed February 27, 2021. http://hdl.handle.net/1803/11518.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Fan, Qiuyun. “Diffusion Tensor Imaging reveals correlations between brain connectivity and children's reading abilities.” 2011. Web. 27 Feb 2021.

Vancouver:

Fan Q. Diffusion Tensor Imaging reveals correlations between brain connectivity and children's reading abilities. [Internet] [Thesis]. Vanderbilt University; 2011. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1803/11518.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Fan Q. Diffusion Tensor Imaging reveals correlations between brain connectivity and children's reading abilities. [Thesis]. Vanderbilt University; 2011. Available from: http://hdl.handle.net/1803/11518

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Vanderbilt University

13. Wu, Tung-Lin. Studies of Functional Connectivity in White Matter.

Degree: MS, Biomedical Engineering, 2016, Vanderbilt University

URL: http://hdl.handle.net/1803/11072

► Resting state functional magnetic resonance imaging (rsfMRI) has been widely used for measuring functional connectivity between cortical regions. However, there have been minimal reports of… (more)

Subjects/Keywords: fMRI; white matter; functional connectivity

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APA (6^th Edition):

Wu, T. (2016). Studies of Functional Connectivity in White Matter. (Thesis). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/11072

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wu, Tung-Lin. “Studies of Functional Connectivity in White Matter.” 2016. Thesis, Vanderbilt University. Accessed February 27, 2021. http://hdl.handle.net/1803/11072.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wu, Tung-Lin. “Studies of Functional Connectivity in White Matter.” 2016. Web. 27 Feb 2021.

Vancouver:

Wu T. Studies of Functional Connectivity in White Matter. [Internet] [Thesis]. Vanderbilt University; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1803/11072.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wu T. Studies of Functional Connectivity in White Matter. [Thesis]. Vanderbilt University; 2016. Available from: http://hdl.handle.net/1803/11072

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

14. Okorafor, Unoma Ndili. Secure Integrated Routing and Localization in Wireless Optical Sensor Networks.

Degree: PhD, Electrical Engineering, 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2950

► Wireless ad hoc and sensor networks are envisioned to be self-organizing and autonomous networks, that may be randomly deployed where no fixed infrastructure is either… (more)

▼ Wireless ad hoc and sensor networks are envisioned to be self-organizing and autonomous networks, that may be randomly deployed where no fixed infrastructure is either feasible or cost-effective. The successful commercialization of such networks depends on the feasible implementation of network services to support security-aware applications. Recently, free space optical (FSO) communication has emerged as a viable technology for broadband distributed wireless optical sensor network (WOSN) applications. The challenge of employing FSO include its susceptibility to adverse weather conditions and the line of sight requirement between two communicating nodes. In addition, it is necessary to consider security at the initial design phase of any network and routing protocol. This dissertation addresses the feasibility of randomly deployed WOSNs employing broad beam FSO with regard to the network layer, in which two important problems are specifically investigated. First, we address the parameter assignment problem which considers the relationship amongst the physical layer parameters of node density, transmission radius and beam divergence of the FSO signal in order to yield probabilistic guarantees on network connectivity. We analyze the node isolation property of WOSNs, and its relation to the connectivity of the network. Theoretical analysis and experimental investigation were conducted to assess the effects of hierarchical clustering as well as fading due to atmospheric turbulence on connectivity, thereby demonstrating the design choices necessary to make the random deployment of the WOSN feasible. Second, we propose a novel light-weight circuit-based, secure and integrated routing and localization paradigm within the WOSN, that leverages the resources of the base station. Our scheme exploits the hierarchical cluster-based organization of the network, and the directionality of links to deliver enhanced security performance including per hop and broadcast authentication, confidentiality, integrity and freshness of routing signals. We perform security and attack analysis and synthesis to characterize the protocol’s performance, compared to existing schemes, and demonstrate its superior performance for WOSNs. Through the investigation of this dissertation, we demonstrate the fundamental tradeoff between security and connectivity in WOSNs, and illustrate how the transmission radius may be used as a high sensitivity tuning parameter to balance there two metrics of network performance. We also present WOSNs as a field of study that opens up several directions for novel research, and encompasses problems such as connectivity analysis, secure routing and localization, intrusion detection, topology control, secure data aggregation and novel attack scenarios. Advisors/Committee Members: Kundur, Deepa (advisor), Georghiades, Costas (committee member), Kim, Eun Jung (committee member), Shakkottai, Srinivas (committee member).

Subjects/Keywords: security; connectivity

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APA (6^th Edition):

Okorafor, U. N. (2009). Secure Integrated Routing and Localization in Wireless Optical Sensor Networks. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2950

Chicago Manual of Style (16^th Edition):

Okorafor, Unoma Ndili. “Secure Integrated Routing and Localization in Wireless Optical Sensor Networks.” 2009. Doctoral Dissertation, Texas A&M University. Accessed February 27, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2950.

MLA Handbook (7^th Edition):

Okorafor, Unoma Ndili. “Secure Integrated Routing and Localization in Wireless Optical Sensor Networks.” 2009. Web. 27 Feb 2021.

Vancouver:

Okorafor UN. Secure Integrated Routing and Localization in Wireless Optical Sensor Networks. [Internet] [Doctoral dissertation]. Texas A&M University; 2009. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2950.

Council of Science Editors:

Okorafor UN. Secure Integrated Routing and Localization in Wireless Optical Sensor Networks. [Doctoral Dissertation]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2950

Penn State University

15. Maggi, Mirella C. Effective Connectivity During Affective Prosody Processing in Children.

Degree: 2017, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/14294mcm5481

► Affective prosody is defined as the paralingustic cues in the voice that convey emotions (Banse & Scherer, 1996). Before they are able to accurately label… (more)

▼ Affective prosody is defined as the paralingustic cues in the voice that convey emotions (Banse & Scherer, 1996). Before they are able to accurately label prosodies, infants and young children perceive and discriminate among them. It is likely that physical properties of the emotional environment, including affective prosodies, influence children’s developmental outcomes. Yet little is known about children’s neural processing of affective prosody cues as the majority of the neuroimaging studies examining the neural correlates of affective prosody processing has been conducted with adults, with the exception of a small body of literature on infants. Seeking to address this gap, this dissertation investigated neural processing of affective prosody in 6-to-10-year old children. It was hypothesized that affective prosody would be associated with effective connectivity among neural regions identified by two prominent neuroscience models. Furthermore, it was hypothesized that affective prosody would modulate effective connectivity. To investigate these questions data from a study utilizing functional magnetic resonance imaging were examined using effective connectivity analyses and graph theory measures. Results partially supported the hypotheses. At the group level, effective connectivity was observed only among regions identified by one of the neuroscience models. However, analyses revealed heterogeneity in effective connectivity at the individual level indicating that all regions were implicated in and functionally connected when children processed different prosodies. Moreover, analyses of graph theory metrics indicated that there were no differences in effective connectivity at the global network level, however there were differences in properties of specific nodes when children processed angry prosody relative to neutral prosody. These findings and implications for future studies are discussed. Advisors/Committee Members: Pamela M. Cole, Dissertation Advisor/Co-Advisor, Pamela M. Cole, Committee Chair/Co-Chair, Koraly Pérez-Edgar, Committee Member, K. Suzanne Scherf, Committee Member, Gregory M. Fosco, Outside Member.

Subjects/Keywords: effective connectivity; affective prosody; children

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APA (6^th Edition):

Maggi, M. C. (2017). Effective Connectivity During Affective Prosody Processing in Children. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/14294mcm5481

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Maggi, Mirella C. “Effective Connectivity During Affective Prosody Processing in Children.” 2017. Thesis, Penn State University. Accessed February 27, 2021. https://submit-etda.libraries.psu.edu/catalog/14294mcm5481.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Maggi, Mirella C. “Effective Connectivity During Affective Prosody Processing in Children.” 2017. Web. 27 Feb 2021.

Vancouver:

Maggi MC. Effective Connectivity During Affective Prosody Processing in Children. [Internet] [Thesis]. Penn State University; 2017. [cited 2021 Feb 27]. Available from: https://submit-etda.libraries.psu.edu/catalog/14294mcm5481.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Maggi MC. Effective Connectivity During Affective Prosody Processing in Children. [Thesis]. Penn State University; 2017. Available from: https://submit-etda.libraries.psu.edu/catalog/14294mcm5481

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

16. Kotb, Abdelrahman Mostafa. Pore Network Connectivity and Its Impacts on Electrical Resistivity of Anisotropic Rocks with Complex Pore Structure.

Degree: MS, Petroleum Engineering, 2015, Texas A&M University

URL: http://hdl.handle.net/1969.1/156294

► Core data and well-log interpretation results are usually comparable in homogenous conventional reservoirs. However, in the case of thinly-bedded, heterogeneous formations consisting of organic-rich mudrocks… (more)

▼ Core data and well-log interpretation results are usually comparable in homogenous conventional reservoirs. However, in the case of thinly-bedded, heterogeneous formations consisting of organic-rich mudrocks and carbonates, core-log calibration and integration are challenging. The calibration of well-log interpretation results with core data is hence justified for thick homogeneous beds. Consequently, petrophysical properties (e.g., fluid saturation) estimated from well logs are not generally in agreement with core measurements. Therefore, upscaling of petrophysical properties from core-scale to log-scale is essential to reconcile measurements obtained from different scales. Although petrophysical measurements vary from core-scale to log-scale, previous publications have shown that the relationship between formation factor and porosity is consistent over a wide-scale range in homogenous sandstones. These correlations, however, do not persist in rocks with complex pore structure and rock fabric (e.g., carbonates). This research investigated the persistence of a correlation between the electrical resistivity and the directional connectivity tensor at different scales within the micron scale in sandstone and carbonate examples. To fulfill this objective, three-dimensional (3D), pore-scale rock images were obtained from micro-CT (Computed Tomography) images. Then, each 3D pore-scale image was divided into subsamples of varying sizes. Afterwards, tortuosity of the networks of the electrically conductive rock components (e.g., formation water) was estimated in each subsample. The next step was to numerically solve the Laplace’s equation to estimate electric field distribution and effective electrical resistivity of each subsample. The last step involved calculating the directional connectivity tensor based on the estimated tortuosity and volumetric concentration of each conductive component in the samples and subsamples. Finally, the impact of directional connectivity of pore network on electrical resistivity was quantified. The results confirmed the existence of a correlation between directional connectivity and electrical resistivity at different micron scales in the samples studied in this thesis. Improvements of up to 59% and 54% were observed in the proposed relationship compared to the conventional relationship between porosity and electrical resistivity in fully and partially water-saturated samples, respectively. An improvement of up to 50% in estimates of water saturation was observed when the directional connectivity of pore network was taken into account. Advisors/Committee Members: Heidari, Zoya (advisor), Ayers, Walter (committee member), Sun, Yuefeng (committee member).

Subjects/Keywords: Heterogeneous; Anisotropy; Directional connectivity

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APA (6^th Edition):

Kotb, A. M. (2015). Pore Network Connectivity and Its Impacts on Electrical Resistivity of Anisotropic Rocks with Complex Pore Structure. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156294

Chicago Manual of Style (16^th Edition):

Kotb, Abdelrahman Mostafa. “Pore Network Connectivity and Its Impacts on Electrical Resistivity of Anisotropic Rocks with Complex Pore Structure.” 2015. Masters Thesis, Texas A&M University. Accessed February 27, 2021. http://hdl.handle.net/1969.1/156294.

MLA Handbook (7^th Edition):

Kotb, Abdelrahman Mostafa. “Pore Network Connectivity and Its Impacts on Electrical Resistivity of Anisotropic Rocks with Complex Pore Structure.” 2015. Web. 27 Feb 2021.

Vancouver:

Kotb AM. Pore Network Connectivity and Its Impacts on Electrical Resistivity of Anisotropic Rocks with Complex Pore Structure. [Internet] [Masters thesis]. Texas A&M University; 2015. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1969.1/156294.

Council of Science Editors:

Kotb AM. Pore Network Connectivity and Its Impacts on Electrical Resistivity of Anisotropic Rocks with Complex Pore Structure. [Masters Thesis]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/156294

University of Newcastle

17. Marshall, Kim. Extremal networks and connectivity.

Degree: PhD, 2011, University of Newcastle

URL: http://hdl.handle.net/1959.13/927974

►

Research Doctorate - Doctor of Philosophy (PhD)

In this thesis we consider questions in two separate but related research areas in the field of graph… (more)

Subjects/Keywords: extremal graphs; connectivity; graph theory

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APA (6^th Edition):

Marshall, K. (2011). Extremal networks and connectivity. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/927974

Chicago Manual of Style (16^th Edition):

Marshall, Kim. “Extremal networks and connectivity.” 2011. Doctoral Dissertation, University of Newcastle. Accessed February 27, 2021. http://hdl.handle.net/1959.13/927974.

MLA Handbook (7^th Edition):

Marshall, Kim. “Extremal networks and connectivity.” 2011. Web. 27 Feb 2021.

Vancouver:

Marshall K. Extremal networks and connectivity. [Internet] [Doctoral dissertation]. University of Newcastle; 2011. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1959.13/927974.

Council of Science Editors:

Marshall K. Extremal networks and connectivity. [Doctoral Dissertation]. University of Newcastle; 2011. Available from: http://hdl.handle.net/1959.13/927974

University of Pretoria

18. Steyn, Konrad. Public information resource centre : knowledge transference, connectivity, community.

Degree: Architecture, 2011, University of Pretoria

URL: http://hdl.handle.net/2263/30283

► The project is situated within the underdeveloped periphery of Mamelodi. It addresses urban issues of connectivity at a physical, spatial and educational level, as a… (more)

Subjects/Keywords: Connectivity; Information transference; Community; UCTD

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APA (6^th Edition):

Steyn, K. (2011). Public information resource centre : knowledge transference, connectivity, community. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/30283

Chicago Manual of Style (16^th Edition):

Steyn, Konrad. “Public information resource centre : knowledge transference, connectivity, community.” 2011. Masters Thesis, University of Pretoria. Accessed February 27, 2021. http://hdl.handle.net/2263/30283.

MLA Handbook (7^th Edition):

Steyn, Konrad. “Public information resource centre : knowledge transference, connectivity, community.” 2011. Web. 27 Feb 2021.

Vancouver:

Steyn K. Public information resource centre : knowledge transference, connectivity, community. [Internet] [Masters thesis]. University of Pretoria; 2011. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2263/30283.

Council of Science Editors:

Steyn K. Public information resource centre : knowledge transference, connectivity, community. [Masters Thesis]. University of Pretoria; 2011. Available from: http://hdl.handle.net/2263/30283

Victoria University of Wellington

19. Hannan, Danielle Amelia. Population genetics and connectivity in Paphies subtriangulata and Paphies australis (Bivalvia: Mesodesmatidae).

Degree: 2014, Victoria University of Wellington

URL: http://hdl.handle.net/10063/3300

► Understanding the different types of genetic population structure that characterise marine species, and the processes driving such patterns, is crucial for establishing links between the… (more)

▼ Understanding the different types of genetic population structure that characterise marine species, and the processes driving such patterns, is crucial for establishing links between the ecology and evolution of a species. This knowledge is vital for management and conservation of marine species. Genetic approaches are a powerful tool for revealing ecologically relevant insights to marine population dynamics. Geographic patterns of genetic population structure are largely determined by the rate at which individuals are exchanged among populations (termed ‘population connectivity’), which in turn is influenced by conditions in the physical environment. The complexity of the New Zealand marine environment makes it difficult to predict how physical oceanographic and environmental processes will influence connectivity in coastal marine organisms and hence the type of genetic structure that will form. This complexity presents a challenge for management of marine resources but also makes the New Zealand region an interesting model system to investigate how and why population structure develops and evolves over time. Paphies subtriangulata (tuatua) and P. australis (pipi) are endemic bivalve ‘surf clams’ commonly found on New Zealand surf beaches and harbour/estuary environments, respectively. They form important recreational, customary and commercial fisheries, yet little is known about the stock structure of these species. This study aimed to use genetic techniques to determine population structure, levels of connectivity and ‘seascape’ genetic patterns in P. subtriangulata and P. australis, and to gain further knowledge of common population genetic processes operating in the New Zealand coastal marine environment. Eleven and 14 novel microsatellite markers were developed for P. subtriangulata and P. australis, respectively. Samples were collected from 10 locations for P. subtriangulata and 13 locations for P. australis (35-57 samples per location; total sample size of 517 for P. subtriangulata and 674 for P. australis). Geographic patterns of genetic variation were measured and rates of migration among locations were estimated on recent and historic time scales. Both species were characterised by genetic population structure that was consistent with their habitat. For P. subtriangulata, the Chatham Island population was strongly differentiated from the rest of the sampled locations. The majority of mainland locations were undifferentiated and estimated rates of migration among locations were high on both time scales investigated, although differentiation among some populations was observed. For P. australis, an overall isolation by distance (IBD) pattern was likely to be driven by distance between discrete estuary habitats. However, it was difficult to distinguish IBD from hierarchical structure as populations could be further subdivided into three significantly differentiated groups (Northern, South Eastern and South Western), providing evidence for barriers to dispersal. Further small scale patterns of genetic… Advisors/Committee Members: Ritchie, Peter, Gardner, Jonathan, Bell, James.

Subjects/Keywords: Marine connectivity; Paphies; Population genetics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hannan, D. A. (2014). Population genetics and connectivity in Paphies subtriangulata and Paphies australis (Bivalvia: Mesodesmatidae). (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/3300

Chicago Manual of Style (16^th Edition):

Hannan, Danielle Amelia. “Population genetics and connectivity in Paphies subtriangulata and Paphies australis (Bivalvia: Mesodesmatidae).” 2014. Doctoral Dissertation, Victoria University of Wellington. Accessed February 27, 2021. http://hdl.handle.net/10063/3300.

MLA Handbook (7^th Edition):

Hannan, Danielle Amelia. “Population genetics and connectivity in Paphies subtriangulata and Paphies australis (Bivalvia: Mesodesmatidae).” 2014. Web. 27 Feb 2021.

Vancouver:

Hannan DA. Population genetics and connectivity in Paphies subtriangulata and Paphies australis (Bivalvia: Mesodesmatidae). [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2014. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10063/3300.

Council of Science Editors:

Hannan DA. Population genetics and connectivity in Paphies subtriangulata and Paphies australis (Bivalvia: Mesodesmatidae). [Doctoral Dissertation]. Victoria University of Wellington; 2014. Available from: http://hdl.handle.net/10063/3300

20. Al-Dabbagh, Balsam Nabil. The effect of ICT connectivity on individual work productivity: Investigating the influence of ICT self-discipline.

Degree: 2015, Victoria University of Wellington

URL: http://hdl.handle.net/10063/4575

► Information and Communication Technologies (ICTs) in the workplace are increasingly connecting employees. This ICT connectivity has mixed effects on individuals' work productivity and it raises… (more)

▼ Information and Communication Technologies (ICTs) in the workplace are increasingly connecting employees. This ICT connectivity has mixed effects on individuals' work productivity and it raises ongoing concern in literature and in the media. The goal of this research was to investigate ICT self-discipline in this context to better explain the effect of ICT connectivity on individual work productivity. A review of existing literature on ICTs in the workplace took place, drawing from the disciplines of Information Systems (IS), Communications, Psychology and Organisational Studies. The literature review assisted with the development of a conceptual research model, which was subsequently used to guide this research. The conceptual research model was validated and refined through the qualitative phase of this research. This phase used semi-structured interviews to expand views on the research phenomena. The updated research model was further validated during the model refinement phase of this research. This phase consisted of two focus groups. Collectively, the literature review, the qualitative phase and the model refinement phase assisted in transforming the updated research model into a testable form. The quantitative phase of this research consolidated key themes from relevant literature and findings from the two prior research phases to develop a survey instrument. An online survey was conducted to test the research model and address the research goal. The statistical analysis of the survey data provided useful results. First, the indicator and construct validity showed that the survey instrument was reliable and it accurately reflected the investigated phenomena. Second, the hypothesis testing showed support for the research model when tested in different contexts. The findings from this phase helped address the research goal. Overall, findings from this research indicated that job requirement for ICT connectivity influences an individual's level of ICT connectivity for work, ICT connectivity positively impacts individual work productivity and ICT self-discipline positively influences individual work productivity. Additionally, ICT self-discipline can positively moderate the effect of ICT connectivity on individual work productivity for employees with low-interdependent jobs and/or working in large/multi-national firms. Further, ICT self-discipline can negatively moderate the effect of ICT connectivity on individual work productivity for employees with high-interdependent jobs and/or working in small firms. Thus, for enhanced productivity, it is important to assess an employee‘s work settings prior to determining how strictly to impose ICT self-discipline. This research addresses concerns on the effects of ICTs raised in the literature and in the media. The research drew from IS and Psychology literature to develop the notion of ICT self-discipline – an individual‘s ability to regulate their behaviors towards ICTs. The research investigated how this notion could enhance the effect of ICTs on individual… Advisors/Committee Members: Sylvester, Allan, Scornavacca, Eusebio.

Subjects/Keywords: Communication-technologies; Connectivity; Productivity

11 more images…

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APA (6^th Edition):

Al-Dabbagh, B. N. (2015). The effect of ICT connectivity on individual work productivity: Investigating the influence of ICT self-discipline. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/4575

Chicago Manual of Style (16^th Edition):

Al-Dabbagh, Balsam Nabil. “The effect of ICT connectivity on individual work productivity: Investigating the influence of ICT self-discipline.” 2015. Doctoral Dissertation, Victoria University of Wellington. Accessed February 27, 2021. http://hdl.handle.net/10063/4575.

MLA Handbook (7^th Edition):

Al-Dabbagh, Balsam Nabil. “The effect of ICT connectivity on individual work productivity: Investigating the influence of ICT self-discipline.” 2015. Web. 27 Feb 2021.

Vancouver:

Al-Dabbagh BN. The effect of ICT connectivity on individual work productivity: Investigating the influence of ICT self-discipline. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2015. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10063/4575.

Council of Science Editors:

Al-Dabbagh BN. The effect of ICT connectivity on individual work productivity: Investigating the influence of ICT self-discipline. [Doctoral Dissertation]. Victoria University of Wellington; 2015. Available from: http://hdl.handle.net/10063/4575

Delft University of Technology

21. van Gijzen, Laurie (author). Fine Sediment Pathways and Connectivity in San Francisco South Bay.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:a31b2e4b-251d-4ab7-a4cf-6f3c25412f92

► Introduction San Francisco Bay is one of the largest estuaries of the US Pacific Coast with an area of 4000 km2. It consists of two… (more)

▼ Introduction San Francisco Bay is one of the largest estuaries of the US Pacific Coast with an area of 4000 km2. It consists of two hydrologically distinctive sub-embayments North Bay and South Bay. South Bay is unique as it does not experience the freshwater flushing typical for estuaries. It experiences the largest freshwater input during a regime of reverse estuarine circulation during Winter, when the entire Bay becomes fresher following peak discharges from the northern rivers. Hence both saline and freshwater enter from Central Bay through the same entrance. South Bay is dealing with increased risk of inundation due to the combination of sea level rise and land subsidence and a deteriorating water quality. Understanding sediment pathways within South Bay and sediment exchange at its entrance can support the development of management strategies dealing with turbidity depended algae blooms and the development of salt marshes as a measure against sea level rise. Additionally, by understanding the current factors controlling fine sediment dynamics, future implications of climate change can be better predicted. Though San Francisco Bay is the topic of much research, a process-based model with a model domain covering the entire Bay is a novel approach to analyse fine sediment dynamics in South Bay. Methods A Delft3D-DELWAQ buffer layer model was calibrated against a newly available combination of local high-frequency suspended sediment concentration (SSC) measurements and two-monthly, depth varying SSC measurements across the entire 145 km length of the Bay. Subsequently the method of Sediment Connectivity was applied to analyse sediment pathways and net sediment fluxes in South Bay. Sediment Connectivity is an approach that uses network analysis to quantify sediment fluxes based on a schematization of San Francisco Bay into 17 segments. Large data sets of spatial and temporal output were reduced to a 17x17 adjacency matrix permitting a more straightforward analysis and the application of different statistical metrics unavailable in more traditional approaches. Results and implications Calibration enabled the model to better capture seasonal and episodic variations in SSCs across the Bay. Connectivity analysis uniquely revealed key dominant pathways, which agree well with literature. Additionally, it unveiled intra-basin transport pathways, regions of erosion and sedimentation and an indication of the varying controlling forcings during the year. Finally, this study acts as a proof of concept for the Sediment Connectivity method that could be applied in other estuaries. Advisors/Committee Members: van Prooijen, Bram (mentor), Herman, Peter (graduation committee), Pearson, Stuart (graduation committee), van der Wegen, Mick (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: fine sediments; estuary; sediment connectivity

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APA (6^th Edition):

van Gijzen, L. (. (2020). Fine Sediment Pathways and Connectivity in San Francisco South Bay. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:a31b2e4b-251d-4ab7-a4cf-6f3c25412f92

Chicago Manual of Style (16^th Edition):

van Gijzen, Laurie (author). “Fine Sediment Pathways and Connectivity in San Francisco South Bay.” 2020. Masters Thesis, Delft University of Technology. Accessed February 27, 2021. http://resolver.tudelft.nl/uuid:a31b2e4b-251d-4ab7-a4cf-6f3c25412f92.

MLA Handbook (7^th Edition):

van Gijzen, Laurie (author). “Fine Sediment Pathways and Connectivity in San Francisco South Bay.” 2020. Web. 27 Feb 2021.

Vancouver:

van Gijzen L(. Fine Sediment Pathways and Connectivity in San Francisco South Bay. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Feb 27]. Available from: http://resolver.tudelft.nl/uuid:a31b2e4b-251d-4ab7-a4cf-6f3c25412f92.

Council of Science Editors:

van Gijzen L(. Fine Sediment Pathways and Connectivity in San Francisco South Bay. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:a31b2e4b-251d-4ab7-a4cf-6f3c25412f92

Université Catholique de Louvain

22. Got, Jean-Baptiste. Soil piping : detection, hydrological functioning and modeling. A case study in loess-derived soils in Belgium.

Degree: 2019, Université Catholique de Louvain

URL: http://hdl.handle.net/2078.1/222920

►

Hydrological functioning of natural soil pipe networks and their impact on water transfer at the hillslope and small watershed scale are still little documented, in… (more)

Subjects/Keywords: GPR; Connectivity; Hydrology; Soil piping

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APA (6^th Edition):

Got, J. (2019). Soil piping : detection, hydrological functioning and modeling. A case study in loess-derived soils in Belgium. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/222920

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Got, Jean-Baptiste. “Soil piping : detection, hydrological functioning and modeling. A case study in loess-derived soils in Belgium.” 2019. Thesis, Université Catholique de Louvain. Accessed February 27, 2021. http://hdl.handle.net/2078.1/222920.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Got, Jean-Baptiste. “Soil piping : detection, hydrological functioning and modeling. A case study in loess-derived soils in Belgium.” 2019. Web. 27 Feb 2021.

Vancouver:

Got J. Soil piping : detection, hydrological functioning and modeling. A case study in loess-derived soils in Belgium. [Internet] [Thesis]. Université Catholique de Louvain; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2078.1/222920.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Got J. Soil piping : detection, hydrological functioning and modeling. A case study in loess-derived soils in Belgium. [Thesis]. Université Catholique de Louvain; 2019. Available from: http://hdl.handle.net/2078.1/222920

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Ottawa

23. Saboui, Karine. Human Footpaths in the Outer Suburbs of Ottawa: Distribution, Network Connectivity, and Walkability .

Degree: 2016, University of Ottawa

URL: http://hdl.handle.net/10393/34921

► This research has three objectives; 1) describe the distribution of footpaths in the outer suburbs of Ottawa, 2) quantify the impact footpaths have on network… (more)

Subjects/Keywords: Footpaths; Walkability; Network Connectivity

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APA (6^th Edition):

Saboui, K. (2016). Human Footpaths in the Outer Suburbs of Ottawa: Distribution, Network Connectivity, and Walkability . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/34921

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Saboui, Karine. “Human Footpaths in the Outer Suburbs of Ottawa: Distribution, Network Connectivity, and Walkability .” 2016. Thesis, University of Ottawa. Accessed February 27, 2021. http://hdl.handle.net/10393/34921.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Saboui, Karine. “Human Footpaths in the Outer Suburbs of Ottawa: Distribution, Network Connectivity, and Walkability .” 2016. Web. 27 Feb 2021.

Vancouver:

Saboui K. Human Footpaths in the Outer Suburbs of Ottawa: Distribution, Network Connectivity, and Walkability . [Internet] [Thesis]. University of Ottawa; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10393/34921.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Saboui K. Human Footpaths in the Outer Suburbs of Ottawa: Distribution, Network Connectivity, and Walkability . [Thesis]. University of Ottawa; 2016. Available from: http://hdl.handle.net/10393/34921

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Ottawa

24. Farah, Carl. Connectivity of dI3 Interneurons In the Development of Mice Spinal Cord .

Degree: 2017, University of Ottawa

URL: http://hdl.handle.net/10393/35752

► Maturation of motor control, including movements that can be autonomously generated by spinal circuits, relies on the development of key inputs to spinal circuitry. In… (more)

Subjects/Keywords: Spinal Cord; Connectivity; Interneuron; Development

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APA (6^th Edition):

Farah, C. (2017). Connectivity of dI3 Interneurons In the Development of Mice Spinal Cord . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/35752

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Farah, Carl. “Connectivity of dI3 Interneurons In the Development of Mice Spinal Cord .” 2017. Thesis, University of Ottawa. Accessed February 27, 2021. http://hdl.handle.net/10393/35752.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Farah, Carl. “Connectivity of dI3 Interneurons In the Development of Mice Spinal Cord .” 2017. Web. 27 Feb 2021.

Vancouver:

Farah C. Connectivity of dI3 Interneurons In the Development of Mice Spinal Cord . [Internet] [Thesis]. University of Ottawa; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10393/35752.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Farah C. Connectivity of dI3 Interneurons In the Development of Mice Spinal Cord . [Thesis]. University of Ottawa; 2017. Available from: http://hdl.handle.net/10393/35752

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Houston

25. -4062-2982. Mild Traumatic Brain Injury Assessment using Functional Connectivity Estimators on Resting State EEG Analysis.

Degree: MS, Engineering Technology, 2019, University of Houston

URL: http://hdl.handle.net/10657/4893

► In the US, over 2 million people su er from mild traumatic brain injury (mTBI), however in some cases it goes undiagnosed due to lack… (more)

Subjects/Keywords: EEG; MTBI; Functional Connectivity; PLV

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APA (6^th Edition):

-4062-2982. (2019). Mild Traumatic Brain Injury Assessment using Functional Connectivity Estimators on Resting State EEG Analysis. (Masters Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/4893

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-4062-2982. “Mild Traumatic Brain Injury Assessment using Functional Connectivity Estimators on Resting State EEG Analysis.” 2019. Masters Thesis, University of Houston. Accessed February 27, 2021. http://hdl.handle.net/10657/4893.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-4062-2982. “Mild Traumatic Brain Injury Assessment using Functional Connectivity Estimators on Resting State EEG Analysis.” 2019. Web. 27 Feb 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-4062-2982. Mild Traumatic Brain Injury Assessment using Functional Connectivity Estimators on Resting State EEG Analysis. [Internet] [Masters thesis]. University of Houston; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10657/4893.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-4062-2982. Mild Traumatic Brain Injury Assessment using Functional Connectivity Estimators on Resting State EEG Analysis. [Masters Thesis]. University of Houston; 2019. Available from: http://hdl.handle.net/10657/4893

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

26. Pappas, Ioannis. Neural correlates of consciousness in the complexity of brain networks.

Degree: PhD, 2019, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/291155

► How do we define consciousness? Besides philosophical endeavours, the development of modern neuroimaging techniques fostered a principled way of quantifying the neural correlates of consciousness.… (more)

▼ How do we define consciousness? Besides philosophical endeavours, the development of modern neuroimaging techniques fostered a principled way of quantifying the neural correlates of consciousness. Acquiring and analysing resting-state functional magnetic resonance imaging (fMRI) and electroencephalography (EEG) data, has allowed neuroscientists to noninvasively map the brain’s functional interactions (or functional connectivity). Based on data obtained during controlled loss of consciousness and in cases of patients with disorders of consciousness, it has now been suggested that multiple, functionally specialized/segregated areas need to interact and integrate information in order to support consciousness. Thus an emerging idea in neuroscience is that the brain needs to balance the coexistence of functional segregation and integration, a property often termed as brain complexity, in order to produce consciousness. A resulting hypothesis is that consciousness is abolished when the balance between segregation and integration is lost and brain complexity is attenuated. In that regard, I use complexity of functional connectivity, an aggregate measure of segregation and integration, as a marker of consciousness. This effort consists of two parts. First, I provide evidence that complexity in the healthy, awake brain is critical in the sense that it reflects a critical balance of segregation and integration designed to support efficient information communication. In turn, I provide evidence that loss of consciousness is associated with decreased complexity i.e. that functional connectivity departs from the critical complexity of the healthy, awake brain towards a more segregated configuration. The structure of this thesis follows accordingly. In the first experimental chapter (3), I show the importance of the critical balance of complexity in the healthy, awake brain by using a structure-to-function association model. Specifically, I show that complexity can be derived upon certain optimal, structural connections (computed as the Nash equilibrium between regions), which promote efficient communication in the brain from the regional to the whole-brain level. Chapter 4 focuses on capturing alterations of complexity in cases of sedation, anaesthesia and disorders of consciousness. Specifically, I show that as one goes from the awake state to anaesthetic-induced unconsciousness and disorders of consciousness, functional connectivity becomes less complex and more segregated. A refined approach that quantifies complexity in different parts of the brain allowed me to see whether this reduction in complexity is more evident in specific regions and networks. Under this framework, at the regional level I provide evidence that sparsely connected regions linking different parts of the brain play a critical role in whole-brain complexity. At the network level I show the importance of the default mode network in whole-brain complexity. Even during rest, the brain is not static and displays rich temporal dynamics. Thus it is not…

Subjects/Keywords: consciousness; complexity; networks; connectivity

10 more images…

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APA (6^th Edition):

Pappas, I. (2019). Neural correlates of consciousness in the complexity of brain networks. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/291155

Chicago Manual of Style (16^th Edition):

Pappas, Ioannis. “Neural correlates of consciousness in the complexity of brain networks.” 2019. Doctoral Dissertation, University of Cambridge. Accessed February 27, 2021. https://www.repository.cam.ac.uk/handle/1810/291155.

MLA Handbook (7^th Edition):

Pappas, Ioannis. “Neural correlates of consciousness in the complexity of brain networks.” 2019. Web. 27 Feb 2021.

Vancouver:

Pappas I. Neural correlates of consciousness in the complexity of brain networks. [Internet] [Doctoral dissertation]. University of Cambridge; 2019. [cited 2021 Feb 27]. Available from: https://www.repository.cam.ac.uk/handle/1810/291155.

Council of Science Editors:

Pappas I. Neural correlates of consciousness in the complexity of brain networks. [Doctoral Dissertation]. University of Cambridge; 2019. Available from: https://www.repository.cam.ac.uk/handle/1810/291155

University of Manitoba

27. Priadka, Pauline. Genetic connectivity of boreal woodland caribou (Rangifer tarandus caribou) in central Canada.

Degree: Natural Resources Management, 2015, University of Manitoba

URL: http://hdl.handle.net/1993/31146

► Delineating population units is essential for the conservation and management of a species. Applying a genetic approach to delineate units, this study identifies genetic population… (more)

Subjects/Keywords: Genetic connectivity; Boreal woodland caribou

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APA (6^th Edition):

Priadka, P. (2015). Genetic connectivity of boreal woodland caribou (Rangifer tarandus caribou) in central Canada. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/31146

Chicago Manual of Style (16^th Edition):

Priadka, Pauline. “Genetic connectivity of boreal woodland caribou (Rangifer tarandus caribou) in central Canada.” 2015. Masters Thesis, University of Manitoba. Accessed February 27, 2021. http://hdl.handle.net/1993/31146.

MLA Handbook (7^th Edition):

Priadka, Pauline. “Genetic connectivity of boreal woodland caribou (Rangifer tarandus caribou) in central Canada.” 2015. Web. 27 Feb 2021.

Vancouver:

Priadka P. Genetic connectivity of boreal woodland caribou (Rangifer tarandus caribou) in central Canada. [Internet] [Masters thesis]. University of Manitoba; 2015. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1993/31146.

Council of Science Editors:

Priadka P. Genetic connectivity of boreal woodland caribou (Rangifer tarandus caribou) in central Canada. [Masters Thesis]. University of Manitoba; 2015. Available from: http://hdl.handle.net/1993/31146

University of Illinois – Chicago

28. Ming, Jing. Integrated Classification of Amnestic Mild Cognitive Impairment Using Functional and Structural MRI.

Degree: 2013, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/10378

► As a prodromal phase of Alzheimer Disease (AD), amnestic Mild Cognitive Impairment (aMCI) may be the appropriate stage for clinical trials of early therapeutic intervention… (more)

▼ As a prodromal phase of Alzheimer Disease (AD), amnestic Mild Cognitive Impairment (aMCI) may be the appropriate stage for clinical trials of early therapeutic intervention delaying AD progress. Blood Oxygen Level Dependent (BOLD) fMRI, as a non-invasive functional neuroimaging technique, has the potential to reflect the early neural network change associated with AD pathology at aMCI stage, and can be used to identify aMCI patients so as to enrich aMCI population for clinical trials. In the present study, we investigated how fMRI data could be used to differentiate potential aMCI patients from age-matched healthy controls. We explored the predictive power of multiple high dimensional fMRI measures acquired while subjects performed episodic memory encoding and recognition tasks, through the use of Support Vector Machine and Logistic Regression classifier. We compare the fMRI measure’s predicting power to the surface-based cortical structural measures and also investigated if integrating different fMRI measures and sMRI measures could improve the classifier performance. Our result demonstrate functional connectivity maps of hippocampus and inferior parietal cortex during encoding tasks achieved highest discriminative power (0.88), which is comparable to the accuracy achieved by the surface-based structural measure. Integrating two measures across different modalities (fMRI and sMRI) or from the same modality greatly increased the classification accuracy from 0.88 to over 0.96 (Leave-one-out-cross-validation). These results indicate combining high dimensional fMRI measures with dimensionality control method (Such as Principal Component Analysis) and machine-learning methods (such as Logistic Regression and Support Vector Machine) can possibly differentiate aMCI patients from control subjects with a high degree of accuracy. Furthermore, the functional and structural brain change of aMCI subjects reflected by different types of fMRI measures (i.e. functional contrasts and functional connectivity) and sMRI measures may be induced by asymmetrical Alzheimer’s pathological process. Integrating multiple measures can provide complementary information to classifiers and greatly increase classification accuracy. Furthermore, the most homogenous neural network feature for patients at aMCI stage may be the disconnection between hippocampus and prefrontal cortex. This hippo-frontal disconnection causes aMCI subjects’ difficulty in the formation of new memory and triggered extensive and more individual-specific compensational brain activation. Advisors/Committee Members: Magin, Richard (advisor), Stebbins, Glenn (committee member), Hetling, John (committee member), Wang, Lei (committee member), Wu, Minjie (committee member).

Subjects/Keywords: aMCI; fMRI; classification; functional connectivity

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APA (6^th Edition):

Ming, J. (2013). Integrated Classification of Amnestic Mild Cognitive Impairment Using Functional and Structural MRI. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/10378

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ming, Jing. “Integrated Classification of Amnestic Mild Cognitive Impairment Using Functional and Structural MRI.” 2013. Thesis, University of Illinois – Chicago. Accessed February 27, 2021. http://hdl.handle.net/10027/10378.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ming, Jing. “Integrated Classification of Amnestic Mild Cognitive Impairment Using Functional and Structural MRI.” 2013. Web. 27 Feb 2021.

Vancouver:

Ming J. Integrated Classification of Amnestic Mild Cognitive Impairment Using Functional and Structural MRI. [Internet] [Thesis]. University of Illinois – Chicago; 2013. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10027/10378.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ming J. Integrated Classification of Amnestic Mild Cognitive Impairment Using Functional and Structural MRI. [Thesis]. University of Illinois – Chicago; 2013. Available from: http://hdl.handle.net/10027/10378

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Victoria University of Wellington

29. Jowett, Susan. Recognition Problems for Connectivity Functions.

Degree: 2015, Victoria University of Wellington

URL: http://hdl.handle.net/10063/4891

► A connectivity function is a symmetric, submodular set function. Connectivity functions arise naturally from graphs, matroids and other structures. This thesis focuses mainly on recognition… (more)

Subjects/Keywords: Graph; Connectivity functions; Matroids

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APA (6^th Edition):

Jowett, S. (2015). Recognition Problems for Connectivity Functions. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/4891

Chicago Manual of Style (16^th Edition):

Jowett, Susan. “Recognition Problems for Connectivity Functions.” 2015. Masters Thesis, Victoria University of Wellington. Accessed February 27, 2021. http://hdl.handle.net/10063/4891.

MLA Handbook (7^th Edition):

Jowett, Susan. “Recognition Problems for Connectivity Functions.” 2015. Web. 27 Feb 2021.

Vancouver:

Jowett S. Recognition Problems for Connectivity Functions. [Internet] [Masters thesis]. Victoria University of Wellington; 2015. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10063/4891.

Council of Science Editors:

Jowett S. Recognition Problems for Connectivity Functions. [Masters Thesis]. Victoria University of Wellington; 2015. Available from: http://hdl.handle.net/10063/4891

Victoria University of Wellington

30. Dohner, Melanie. Crawling to connectivity? The direct-developing journey of the spotted whelk (Cominella maculosa).

Degree: 2016, Victoria University of Wellington

URL: http://hdl.handle.net/10063/5349

► The exchange of individuals between populations influences demographic connectivity on the ecological scale and genetic connectivity on the evolutionary scale. In some circumstances there are… (more)

▼ The exchange of individuals between populations influences demographic connectivity on the ecological scale and genetic connectivity on the evolutionary scale. In some circumstances there are similarities between demographic and genetic connectivity, but in others there are differences. Whenever genetic differentiation is found between populations demographic uncoupling can also be inferred, but when gene flow is found there is uncertainty about whether populations are demographically connected or not. Marine invertebrates typically have large population sizes and many opportunities for dispersal. However, species that have limited planktonic dispersal power are often characterized by genetically and demographically discrete populations that exhibit an isolation-by-distance (IBD) pattern of gene distribution. Alternative methods of dispersal, such as rafting or drifting, produce departures from this expected pattern for species lacking planktonic larvae. Examining genetic patterns at fine geographic scales can identify key dispersal barriers and may give clues to alternative dispersal methods influencing large scale processes. The endemic, direct-developing spotted whelk, Cominella maculosa, is found in the intertidal rocky shores throughout most of New Zealand. This distribution makes it ideal for studying a species expected to exhibit low realized dispersal by crawling and is unlikely to experience dispersal by rafting. The first aim of this study was to investigate genetic patterns between two genetically distinct populations along the Wairarapa Coast of the North Island to determine if a barrier to dispersal was present or if the expected IBD pattern was observed. The second aim was to determine the likelihood of individual hatchlings undertaking long distance dispersal by drifting in the water column. The mitochondrial DNA COI gene was sequenced using 324 whelk samples collected at seven sites along 125 km of Wairarapa shoreline. No significant level of genetic isolation-by-distance or discontinuity in haplotype distribution was observed. Instead, two sites in the middle of the region form a contact area where the dominant northern and southern haplotypes coexist. To investigate dispersal by drifting in the water, three experimental trials were conducted with hatchlings obtained from field-collected egg capsules. When subjected to wave forces, or deposited directly in flow, hatchlings remained suspended and were carried a short distance. However, hatchlings circulated in currents and left for a longer period (12 hours) were rarely found drifting after this period. These trials indicate that wave dislodgement and local flow regime may result in small-scale displacement of hatchlings, but long-distance dispersal by drift is unlikely. Plankton sampling was also conducted at two sites with four nearshore traps. The rare capture of a related Cominella virgata hatchling supports the finding that hatchlings can be dislodged, but prolonged drift cannot be inferred. The findings from this study support the assumption… Advisors/Committee Members: Phillips, Nicole, Ritchie, Peter.

Subjects/Keywords: Dispersal; Connectivity; Direct development; Gastropod

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APA (6^th Edition):

Dohner, M. (2016). Crawling to connectivity? The direct-developing journey of the spotted whelk (Cominella maculosa). (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/5349

Chicago Manual of Style (16^th Edition):

Dohner, Melanie. “Crawling to connectivity? The direct-developing journey of the spotted whelk (Cominella maculosa).” 2016. Masters Thesis, Victoria University of Wellington. Accessed February 27, 2021. http://hdl.handle.net/10063/5349.

MLA Handbook (7^th Edition):

Dohner, Melanie. “Crawling to connectivity? The direct-developing journey of the spotted whelk (Cominella maculosa).” 2016. Web. 27 Feb 2021.

Vancouver:

Dohner M. Crawling to connectivity? The direct-developing journey of the spotted whelk (Cominella maculosa). [Internet] [Masters thesis]. Victoria University of Wellington; 2016. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10063/5349.

Council of Science Editors:

Dohner M. Crawling to connectivity? The direct-developing journey of the spotted whelk (Cominella maculosa). [Masters Thesis]. Victoria University of Wellington; 2016. Available from: http://hdl.handle.net/10063/5349

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Open Access Theses and Dissertations