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Mechanics, Shape, And Programmability In Soft Matter Systems: From Fluid Membranes To Spring And Droplet Networks, Tao Zhang

Dissertations - ALL

This thesis analyzes three different soft matter systems---membranes, polymers, and droplets---to answer questions about shape, mechanics, and programmability.

For membranes, my collaborators and I have developed a theoretical model of endocytosis in yeast. Endocytosis is the process by which a cell membrane deforms to surround extracellular material to draw it into the cell. Endocytosis in yeast involves clathrin, actin, and Bar proteins. Our model breaks up the process into three stages: (i) initiation, where clathrin interacts with the cell membrane via adaptor proteins, (ii) elongation, where the membrane is then further deformed by polymerizing actin filaments, followed by (iii) pinch-off. …

Students' Attitudes Towards Socially--But Not Scientifically--Controversial Subjects: Evaluating Ways In Which These Attitudes May Be Shifted, Benjamin Elijah Carter

Dissertations - ALL

Chapter1: Numerous anti-science bills introduced into state legislatures reference the "strengths and weaknesses" of scientific subjects, but the subjects they target, most commonly evolution and global climate change, are not topics of contention within the scientific community. This brief work provides a researched rebuttal to the notion that evolution and climate change have strengths and weaknesses of the form implied by anti-science legislation while providing examples of actual scientific disagreement about these subjects. The disagreement is not, of course, about whether or not evolution or climate change are factual occurrences, but rather over ideas such as the finer points of …

Comparison Of Cost Function Against Positional Analysis For Automated Tracking Of Three-Cell Interactions, Ye He

Dissertations - ALL

Localization and tracking of cells generates raw digital information from microscopy images, including images of stained nuclei and highly precise determination of central positions of cells, which can be analyzed for investigation of cell motility. In a previous study by this group, an algorithm termed automated contour-based tracking for in vitro environments (ACTIVE) was established for tracking large cell populations for long periods of time. For the two-cell interaction events on which ACTIVE was initially focused, error rate was reduced as much as 43% compared to a traditional positional analysis algorithm by Kilfoil and colleagues. In the present thesis, we …

Mechanically Active Electrospun Materials, Jaimee Marie Robertson

Dissertations - ALL

Electrospinning, a technique used to fabricate small diameter polymer fibers, has been employed to develop unique, active materials falling under two categories: (1) shape memory elastomeric composites (SMECs) and (2) water responsive fiber mats. (1) Previous work has characterized in detail the properties and behavior of traditional SMECs with isotropic fibers embedded in an elastomer matrix. The current work has two goals: (i) characterize laminated anisotropic SMECs and (ii) develop a fabrication process that is scalable for commercial SMEC manufacturing. The former ((i)) requires electrospinning aligned polymer fibers. The aligned fibers are similarly embedded in an elastomer matrix and stacked …

The Scientist, 2015, San Jose State University, College Of Science

The Scientist (College of Science)

No abstract provided.

Wisconsin Roots: Making History Interviews With Richard M. Jaffee And John W. Rowe, Timothy Gilfoyle

History: Faculty Publications and Other Works

Rowe arid Jaffee share more than their long tenures as chief executives. Both have roots in southwestern Wisconsin.

The Role Of Vitamin D In Diabetes And Cardiovascular Disease: An Updated Review Of The Literature, Dimitrios Papandreou, Zujaja Tul Noor Hamid

All Works

© 2015 Dimitrios Papandreou and Zujaja-Tul-Noor Hamid. The dietary reference values for Vitamin D were set primarily considering its role in bone health, but with the discovery of Vitamin D receptors throughout body tissues, new links with other health conditions are now studied, such as for diabetes and cardiovascular diseases (CVD). This paper shall analyze and examine all new research studies carried out, especially in 2013-2015 regarding diabetes mellitus (DM) and cardiovascular diseases (CVD). Vast research has been carried out to establish strong relationship between Vitamin D serum levels, supplementation, diabetes, and CVD. However, the results from researches identified in …

Determination Of Heavy Metals Concentration In Traditional Herbs Commonly Consumed In The United Arab Emirates, Rania Dghaim, Safa Al Khatib, Husna Rasool, Munawwar Ali Khan

All Works

Copyright © 2015 Rania Dghaim et al. Herbs are extensively consumed in the United Arab Emirates for their flavoring and medicinal properties. This study aimed at determining the concentration of heavy metals in selected traditional herbs consumed in the United Arab Emirates (UAE). A total of 81 samples of seven herbs, parsley (Petroselinumcrispum), basil (Ocimum basilicum), sage (Salvia officinalis), oregano (Origanum vulgare), mint (Mentha spicata), thyme (Thymus vulgaris), and chamomile (Matricaria chamomilla), were purchased from the local market in Dubai and analyzed for their cadmium, lead, copper, iron, and zinc contents. Microwave-assisted digestion was applied for the dissolution of the …

Discovery, Prevalence, And Persistence Of Novel Circular Single-Stranded Dna Viruses In The Ctenophores Mnemiopsis Leidyi And Beroe Ovata, Mya Breitbart, Bayleigh Benner, Parker Jernigan, Karyna Rosario, Laura Birsa, Rachel Harbeitner, Sidney Fulford, Carina Graham, Anna Walters, Dawn Goldsmith, Stella Berger, Jens Nejstgaard

Marine Science Faculty Publications

Gelatinous zooplankton, such as ctenophores and jellyfish, are important components of marine and brackish ecosystems and play critical roles in aquatic biogeochemistry. As voracious predators of plankton, ctenophores have key positions in aquatic food webs and are often successful invaders when introduced to new areas. Gelatinous zooplankton have strong impacts on ecosystem services, particularly in coastal environments. However, little is known about the factors responsible for regulating population dynamics of gelatinous organisms, including biological interactions that may contribute to bloom demise. Ctenophores are known to contain specific bacterial communities and a variety of invertebrate parasites and symbionts; however, no previous …

Multidimensional Metrics For Estimating Phage Abundance, Distribution, Gene Density, And Sequence Coverage In Metagenomes, Ramy Aziz, Bhakti Dwivedi, Sajia Akhter, Mya Breitbart, Robert Edwards

Marine Science Faculty Publications

No abstract provided.

The Common Agricultural Policy: An Adequate Means Of Supporting Biodiversity And Ecosystem Services Within The European Union?, Annie Martyn

The Plymouth Law and Criminal Justice Review

This research presents a critical analysis of the 2013 Common Agricultural Policy (CAP) reforms and their ability to support the European Union in reaching its target of halting biodiversity loss by 2020 and to preserve and restore ecosystem services. In light of the link between agriculture and its negative effects on the environment, the role of the CAP will be examined. In particular, this paper will focus on the tension between the ambition set out in the Policy to provide sufficient economic support to farmers and the EU-wide focus to prevent further environmental damage caused by agriculture, and whether, in …

Europeanization, Environmental Policy And The Uk, Analyzing Perspectives Of Offshore Wind Farms And Planning Procedures, Samantha Loveridge

The Plymouth Law and Criminal Justice Review

Sustainable development is an important principle for improving human life and ensuring the wellbeing of the planet. It posits a desirable future for human societies in which living conditions and resource-use meet human needs, without undermining the sustainability of natural systems and the environment, so that future generations may also have their needs met. It ties together concerns for the capacity of natural systems and challenges faced by humanity which concentrates on a balance between social, economic and environmental variables in relation to current and future existence. To accomplish a successful balance of these variables a transition is required which …

High Times: An Ethnography Of Young Adult Drug Use, Ben Coombe

The Plymouth Law and Criminal Justice Review

This research explores the phenomenon of 'legal highs' or Novel Psychoactive Substances (NPS), directing substantial focus towards the exploration of user attraction. Whilst legal high research is expanding, the topic of legal highs still remains a relatively under-researched topic. In particular, research concerning the user is in short supply, as policy makers remain detached from the importance of understanding the attraction for users (Winstock and Ramsey, 2010). Therefore, this paper attempts to capitalise in the expansion of this knowledge and discover what reasons users attribute for the use of these psychoactive substances. A comprehensive review of the current literature has …

The Geomorphological Development Of Ephemeral And Relict River Valley Systems In The North Part Of The Iraqi Western Desert, Waleed Hamed

School of Geography, Earth and Environmental Sciences Theses

This research project provides a geomorphological and geological analysis of ephemeral and relict river valley systems in the north part of the Iraqi Western Desert. The area surveyed covers approximately 30 000 km2 and is one of the remotest and least studied parts of the Arabian Peninsula. Part of the reason for the lack of research in this area in recent years has been the ongoing security problems and all fieldwork undertaken for this thesis was carried out with the support of armed guards and police. In addition much of the work on the geology and geomorphology of the region …

Using Ocean Bottom Pressure From The Gravity Recovery And Climate Experiment (Grace) To Estimate Transport Variability In The Southern Indian Ocean, Jessica K. Makowski, Don P. Chambers, Jennifer A. Bonin

Marine Science Faculty Publications

Previous studies have suggested that ocean bottom pressure (OBP) from the Gravity Recovery and Climate Experiment (GRACE) can be used to measure the depth-averaged, or barotropic, transport variability of the Antarctic Circumpolar Current (ACC). Here, we use GRACE OBP observations to calculate transport variability in a region of the southern Indian Ocean encompassing the major fronts of the ACC. We use a statistical analysis of a simulated GRACE-like data set to determine the uncertainty of the estimated transport for the 2003.0–2013.0 time period. We find that when the transport is averaged over 60° of longitude, the uncertainty (one standard error) …

Advanced Applications Of Cardiac Computed Tomography For The Difficult-To-Image Patient, Benjamin James Clayton

Peninsula Medical School Theses

Throughout the development of computed tomographic (CT) imaging the challenges of capturing the heart, with its perpetual, vigorous motion, and in particular the tiny detail within the coronary arteries, has driven technological progress. Today, CT is a widely used and rapidly growing modality for the investigation of coronary artery disease, as well as other cardiac pathology. However, limitations remain and particular patient groups present a significant challenge to the CT operator. This thesis adds new knowledge to the assessment of these difficult-to-image patients. It considers patients with artefact from coronary artery calcification or stents, examining the remarkable diagnostic performance of …

Law And People With Disabilities, Janet E. Lord, Deepti S. Raja, Peter Blanck

All Faculty Scholarship

This article describes the progressive development of disability law, particularly in light of international developments that are transforming domestic disability law frameworks. It provides an overview of the conceptualization of disability in law, charting the shift from a medical model to a social model of disability and more recently to a human rights model. The abstract covers the implications of the Convention on the Rights of Persons with Disabilities (CRPD), and the processes and approaches for translating international disability law standards into national level law. It sheds light on the contemporary disability rights landscape in the light of dramatic legislative …

A Comparison Of Satellite-Derived Sea Surface Temperature Fronts Using Two Edge Detection Algorithms, Yi Chang, Peter C. Cornillon

Graduate School of Oceanography Faculty Publications

Satellite-derived sea surface temperature (SST) fronts provide a valuable resource for the study of oceanic fronts. Two edge detection algorithms designed specifically to detect fronts in satellite-derived SST fields are compared: the histogram-based algorithm of Cayula and Cornillon, 1992, Cayula and Cornillon, 1995 and the entropy-based algorithm of Shimada et al. (2005). The algorithms were applied to 4 months (July and August for both 1995 and 1996) of SST fields and the results are compared with SST data taken by the M.V. Oleander, a container ship that makes weekly transits between New York and Bermuda. There is no significant …

Experimental Evolution Gone Wild, M. Scheinin, U. Riebesell, Tatiana A. Rynearson, K. T. Lohbeck, S. Collins

Graduate School of Oceanography Faculty Publications

Because of their large population sizes and rapid cell division rates, marine microbes have, or can generate, ample variation to fuel evolution over a few weeks or months, and subsequently have the potential to evolve in response to global change. Here we measure evolution in the marine diatom Skeletonema marinoi evolved in a natural plankton community in CO₂-enriched mesocosms deployed in situ. Mesocosm enclosures are typically used to study how the species composition and biogeochemistry of marine communities respond to environmental shifts, but have not been used for experimental evolution to date. Using this approach, we detect …

Comparative Biogeochemistry–Ecosystem–Human Interactions On Dynamic Continental Margins, Lisa A. Levin, Kon-Kee Liu, Kay-Christian Emeis, Denise L. Breitburg, James Cloern, Curtis Deutsch, Michele Giani, Anne Goffart, Eileen E. Hofmann, Zouhair Lachkar, Karin Limburg, Su-Mei Liu, Enrique Montes, Wajih Naqvi, Olivier Ragueneau, Christopher Rabouille, Santosh Kumar Sarkar, Dennis P. Swaney, Paul Wassman, Karen F. Wishner

Graduate School of Oceanography Faculty Publications

The oceans' continental margins face strong and rapid change, forced by a combination of direct human activity, anthropogenic CO₂-induced climate change, and natural variability. Stimulated by discussions in Goa, India at the IMBER IMBIZO III, we (1) provide an overview of the drivers of biogeochemical variation and change on margins, (2) compare temporal trends in hydrographic and biogeochemical data across different margins, (3) review ecosystem responses to these changes, (4) highlight the importance of margin time series for detecting and attributing change and (5) examine societal responses to changing margin biogeochemistry and ecosystems. We synthesize information over a …

Intensity Of Th And Pa Scavenging Partitioned By Particle Chemistry In The North Atlantic Ocean, Christopher T. Hayes, Robert F. Anderson, Martin Q. Fleischer, Sebastian M. Vivancos, Phoebe J. Lam, Daniel C. Ohnemus, Kuo-Fang Huang, Laura F. Robinson, Yanbin Lu, Hai Cheng, R. Lawrence Edwards, S. Bradley Moran

Graduate School of Oceanography Faculty Publications

The natural radionuclides ²³¹Pa and ²³⁰Th are incorporated into the marine sediment record by scavenging, or adsorption to various particle types, via chemical reactions that are not fully understood. Because these isotopes have potential value in tracing several oceanographic processes, we investigate the nature of scavenging using trans-Atlantic measurements of dissolved (< 0.45 μm) and particulate (0.8–51 μm) ²³¹Pa and ²³⁰Th, together with major particle composition. We find widespread impact of intense scavenging by authigenic Fe/Mn (hydr)oxides, in the form of hydrothermal particles emanating from the Mid-Atlantic ridge and particles resuspended from reducing conditions near the seafloor off the coast of West …

Arctic Ocean Bathymetry: A Necessary Geospatial Framework, Martin Jakobsson, Larry A. Mayer, Dave Monahan

Center for Coastal and Ocean Mapping

Most ocean science relies on a geospatial infrastructure that is built from bathymetry data collected from ships underway, archived, and converted into maps and digital grids. Bathymetry, the depth of the seafloor, besides having vital importance to geology and navigation, is a fundamental element in studies of deep water circulation, tides, tsunami forecasting, upwelling, fishing resources, wave action, sediment transport, environmental change, and slope stability, as well as in site selection for platforms, cables, and pipelines, waste disposal, and mineral extraction. Recent developments in multibeam sonar mapping have so dramatically increased the resolution with which the seafloor can be portrayed …

The Innovator's Dilemma, Max Stul Oppenheimer

All Faculty Scholarship

No abstract provided.

An Electrophysiological Investigation Of Reward Prediction Errors In The Human Brain, Thomas Sambrook

School of Psychology Theses

Reward prediction errors are quantitative signed terms that express the difference between the value of an obtained outcome and the expected value that was placed on it prior to its receipt. Positive reward prediction errors constitute reward, negative reward prediction errors constitute punishment. Reward prediction errors have been shown to be powerful drivers of reinforcement learning in formal models and there is thus a strong reason to believe they are used in the brain. Isolating such neural signals stands to help elucidate how reinforcement learning is implemented in the brain, and may ultimately shed light on individual differences, psychopathologies of …

Cognitive Processes In Craving: From The Laboratory To The Real World., Jessica Skorka-Brown

School of Psychology Theses

Elaborated Intrusion (EI) Theory posits that craving involves mental imagery in the same sensory modalities as the craved substance or activity. Visual imagery predominates, therefore craving should selectively interfere with performance on visual task, and conversely visual tasks should interfere with craving. This thesis reports tests of this prediction, both in the laboratory and real-world settings, to provide a basis for designing practical tasks for interfering with cravings in a natural environment. Contrary to predictions, experiments 1 and 2 showed no effect of craving on visual or verbal task performance. There were, however, effects of task performance on craving in …

Factors Associated With Stiff Knee Gait In Cerebral Palsy, Eleanor Frances Compton

Other Faculty of Health Theses

Stiff knee gait (SKG) is one of a few classified walking patterns which people with cerebral palsy (pwCP) can present with. The characteristic for SKG is delayed and/or reduced peak knee flexion during swing phase, which can reduce walking ability and result in functional restrictions. Through the use of both clinical and laboratory based measures this cross-sectional study aimed to identify the factors associated with SKG, suggest possible treatment options and propose potential directions for future research. The impact of five variables on knee flexion amplitude during the swing phase of gait was assessed. Data was gathered from a group …

An Exploration Of The Impact Of Ptsd Following Childbirth And The Suitability Of Writing Therapy As A Therapeutic Tool, Susanne Peeler

Other Faculty of Health Theses

Background: Postnatal PTSD affects between 1 and 6% of women, whereas 30% are partially symptomatic. The mental health of new mothers is of public health concern as it could affect the marital relationship and the behavioural and emotional health of children. Little research has explored emotional regulation difficulties as predictors for postnatal PTSD. Treatments such as Cognitive Behavioural Therapy (CBT) have long waiting list times and may be hard to access for new mothers. Aim: The relationship between key predictors especially those associated with emotional regulation and PTSD in postnatal women was investigated. The feasibility of using internet based writing …

Brain Inspired Approach To Computational Face Recognition, Joao Paulo Da Silva Gomes

Other Faculty of Science and Engineering Theses

Face recognition that is invariant to pose and illumination is a problem solved effortlessly by the human brain, but the computational details that underlie such efficient recognition are still far from clear. This thesis draws on research from psychology and neuroscience about face and object recognition and the visual system in order to develop a novel computational method for face detection, feature selection and representation, and memory structure for recall. A biologically plausible framework for developing a face recognition system will be presented. This framework can be divided into four parts: 1) A face detection system. This is an improved …

High-Performance Near-Time Processing Of Bulk Data, Martin Swientek

Other Faculty of Science and Engineering Theses

Enterprise Systems like customer-billing systems or financial transaction systems are required to process large volumes of data in a fixed period of time. Those systems are increasingly required to also provide near-time processing of data to support new service offerings. Common systems for data processing are either optimized for high maximum throughput or low latency. This thesis proposes the concept for an adaptive middleware, which is a new approach for designing systems for bulk data processing. The adaptive middleware is able to adapt its processing type fluently between batch processing and single-event processing. By using message aggregation, message routing and …

Affective Quality Of Educational Services Measurement In The Context Of Higher Education Marketing, Hanna Shauchenka

Other Faculty of Science and Engineering Theses

Educational marketing has become an increasingly important area within Higher Education as the competition for students has intensified. Being able to measure and understand the quality of educational services – a key factor in the decision making process for a prospective student – is an incredibly challenging problem as it involves the quantitative measurement of factors such as emotions and affections towards an Institution or programme, which themselves tend to be intangible. The application of total quality management philosophy and methodology in the context of higher education today is fully acknowledged and widely used. These conditions have defined the main …