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Articles 1291 - 1320 of 12196
Full-Text Articles in Physical Sciences and Mathematics
The Return Of Dr. Strangelove: How Austerity Makes Us Stop Worrying And Love The Bomb…And Cyber War, Jan Kallberg, Adam Lowther
The Return Of Dr. Strangelove: How Austerity Makes Us Stop Worrying And Love The Bomb…And Cyber War, Jan Kallberg, Adam Lowther
Jan Kallberg
With sequestration looming—generating significant cuts to defense spending—the United States may find itself increasingly relying on nuclear and cyber deterrence as an affordable way to guarantee national sovereignty and prevent major conflict. While earlier defense planning and acquisitions were based on economic conditions that no longer exist, Congress’ options to balance the budget by cutting defense spending are politically palatable because far fewer American are “defense voters” than “social welfare voters,” according to a number of recent public opinion surveys.
Ieee T&S Magazine: Undergoing Transformation, Katina Michael
Ieee T&S Magazine: Undergoing Transformation, Katina Michael
Professor Katina Michael
Our Magazine is in a transformative period, not only because we are ‘Going Green’ in 2013 but because we are experiencing tremendous growth in quality international submissions. This means that we are increasingly appealing to an international audience with transdisciplinary interests. This has not gone unnoticed by the media, nor by our SSIT readership or wider engineering community.
Towards A Resilient Sydney: Research Into The Role Of Emergency Management In Climate Change Adaptation (Research Summary), Neil Dufty, Tim Morrison
Towards A Resilient Sydney: Research Into The Role Of Emergency Management In Climate Change Adaptation (Research Summary), Neil Dufty, Tim Morrison
Neil Dufty
No abstract provided.
Community Flood Education And Awareness In Fairfield City (Report), Neil Dufty
Community Flood Education And Awareness In Fairfield City (Report), Neil Dufty
Neil Dufty
No abstract provided.
Scaling Bayesian Network Parameter Learning With Expectation Maximization Using Mapreduce, Erik B. Reed, Ole J. Mengshoel
Scaling Bayesian Network Parameter Learning With Expectation Maximization Using Mapreduce, Erik B. Reed, Ole J. Mengshoel
Ole J Mengshoel
Mapreduce For Bayesian Network Parameter Learning Using The Em Algorithm, Aniruddha Basak, Irina Brinster, Ole J. Mengshoel
Mapreduce For Bayesian Network Parameter Learning Using The Em Algorithm, Aniruddha Basak, Irina Brinster, Ole J. Mengshoel
Ole J Mengshoel
Paradoxical Results Of Adaptive False Discovery Rate Procedures In Neuroimaging Studies, Philip T. Reiss, Armin Schwartzman, Feihan Lu, Lei Huang, Erika Proal
Paradoxical Results Of Adaptive False Discovery Rate Procedures In Neuroimaging Studies, Philip T. Reiss, Armin Schwartzman, Feihan Lu, Lei Huang, Erika Proal
Philip T. Reiss
Adaptive false discovery rate (FDR) procedures, which offer greater power than the original FDR procedure of Benjamini and Hochberg, are often applied to statistical maps of the brain. When a large proportion of the null hypotheses are false, as in the case of widespread effects such as cortical thinning throughout much of the brain, adaptive FDR methods can surprisingly reject more null hypotheses than not accounting for multiple testing at all—i.e., using uncorrected p-values. A straightforward mathematical argument is presented to explain why this can occur with the q-value method of Storey and colleagues, and a simulation study shows that …
Civic Ecology: Living Community Systems For Sustainability, Tim Smith
Civic Ecology: Living Community Systems For Sustainability, Tim Smith
Systems Science Friday Noon Seminar Series
Civic Ecology is a stakeholder-driven, whole systems framework for creating sustainable communities. The framework focuses on empowering citizens of all ages, cultures, and abilities to envision, create, and manage their community’s unique “software” -- the integrated energy, nutrient, water, waste, material, and food systems, as well as economic flows and cultural interactions that animate their place. Exploring and supporting these flows allows communities to enhance their local wealth (environmental, economic, and social), resilience, and competitiveness, and help them take control of designing and managing their future through collaboration and innovation. The Civic Ecology framework can be the foundation upon which …
Effects Of Sn Doping On The Morphology And Properties Of Fe-Doped In2o3 Epitaxial Films, Tie Zhou, Lin Wei, Yanru Xie, Qinghao Li, Guoxiang Hu, Yanxue Chen, Shishen Yan, Guolei Liu, Liangmo Mei, Jun Jiao
Effects Of Sn Doping On The Morphology And Properties Of Fe-Doped In2o3 Epitaxial Films, Tie Zhou, Lin Wei, Yanru Xie, Qinghao Li, Guoxiang Hu, Yanxue Chen, Shishen Yan, Guolei Liu, Liangmo Mei, Jun Jiao
Physics Faculty Publications and Presentations
(Sn, Fe)-codoped In₂O₃ epitaxial films were deposited on (111)-oriented Y-stabilized ZrO₂ substrates by pulsed laser deposition with constant Fe concentration and different Sn concentrations. The influence of Sn concentration on the crystal structure and properties of Fe-doped In₂O₃ ferromagnetic semiconductor films has been investigated systematically. Experimental results indicate that Sn doping can effectively reduce the surface roughness and suppresses breakup of the films into separated islands. At the same time, the optical band gap increases and the electrical properties improve correspondingly. However, although the carrier density increases dramatically with the Sn doping, no obvious change of the ferromagnetism is observed. …
String-Wrapped Rotating Disks, Joseph O'Rourke
String-Wrapped Rotating Disks, Joseph O'Rourke
Computer Science: Faculty Publications
Let the centers of a finite number of disjoint, closed disks be pinned to the plane, but with each free to rotate about its center. Given an arrangement of such disks with each labeled + or -, we investigate the question of whether they can be all wrapped by a single loop of string so that, when the string is taut and circulates, it rotates by friction all the ⊕-disks counterclockwise and all the ⊖-disks clockwise, without any string-rubbing conflicts. We show that although this is not always possible, natural disk-separation conditions guarantee a solution. We also characterize the hexagonal …
Optimization Of Chiral Separation Of Nadolol By Simulated Moving Bed Technology, Nesma Nehad Hashem
Optimization Of Chiral Separation Of Nadolol By Simulated Moving Bed Technology, Nesma Nehad Hashem
Electronic Thesis and Dissertation Repository
Simulated Moving Bed (SMB) technology has gained increasing attention as one of the most powerful techniques for chromatographic separations due to its cost-effectiveness and efficiency. Application of SMB technology is especially important in the pharmaceutical industry for production of enantiopure drugs, as required under strict FDA regulations, to avoid possible adverse effects of racemic drugs. In this study, the performance of the SMB process in separation of racemic nadolol on a perphenyl carbamoylated beta cyclodextrin (β-CD) stationary phase was investigated. The equilibrium dispersive model coupled with bi-Langmuir adsorption isotherm and lumped kinetic approximation, constitute the mathematical model used to simulate …
The Effects Of River Sediment, Endosulfan, And Moderate Hypoxia On Blue Crabs (Callinectes Sapidus) From The Tidal, Freshwater James River, Laura Williams
The Effects Of River Sediment, Endosulfan, And Moderate Hypoxia On Blue Crabs (Callinectes Sapidus) From The Tidal, Freshwater James River, Laura Williams
Theses and Dissertations
Juvenile male blue crabs move into the tidal, freshwater James River during warmer months to feed and grow by undergoing molting. In crustaceans, growth and molting are hormonally controlled. The physiological effects of a multiple-stressor environment are determined by comparing the blue crab’s oxygen uptake after exposure to pure sand, James River sediment, or endosulfan-spiked sand. The effect of multiple stressors on molting is measured by the activity level of N-acetyl-ß-glucosaminidase (NAG), an enzyme in epidermal tissue important to molting. The oxygen uptake was decreased by exposure to James River sediment but not for exposure to endosulfan for seven days. …
Incomplete Market Models Of Carbon Emissions Markets, Walid Mnif
Incomplete Market Models Of Carbon Emissions Markets, Walid Mnif
Electronic Thesis and Dissertation Repository
New regulatory frameworks have been developed with the aim of decreasing global greenhouse gas emissions over both short and long time periods. Incentives must be established to encourage the transition to a clean energy economy. Emissions taxes represent a "price" incentive for this transition, but economists agree this approach is suboptimal. Instead, the "quantity" instrument provided by cap-and-trade markets are superior from an economic point of view. This thesis focuses on the cap-and-trade instrument. Carbon emissions markets have recently been implemented in different countries. We summarize the state of world cap-and-trade schemes. We also provide a literature review of existing …
Retailing Nears Holy Grail In 'Big Data', Jennifer Priestley
Retailing Nears Holy Grail In 'Big Data', Jennifer Priestley
Jennifer L. Priestley
(First paragraph) Yesterday I was online looking for a red, cotton wrap skirt, size 6 (OK, maybe size 8). After viewing several different retail sites, clicking through countless options, I found the perfect skirt. But I had to “abandon” my cart to take care of a minor household crisis. When I went back online, it seemed as if every ad included size 6 women, wearing red wrap skirts. Even more interesting, most came with an incentive for free shipping or 10 percent off.
Nitrogen Flow Pathways Through An Alpine Lake, David Epstein, Wayne Wurtsbaugh
Nitrogen Flow Pathways Through An Alpine Lake, David Epstein, Wayne Wurtsbaugh
David Epstein
No abstract provided.
Nutrient Transport Through Lakes In A Sub-Alpine Watershed In The Sawtooth Mountains Of Idaho, David Epstein
Nutrient Transport Through Lakes In A Sub-Alpine Watershed In The Sawtooth Mountains Of Idaho, David Epstein
David Epstein
No abstract provided.
Nitrogen Transport Through A Sub-Alpine Lake: Bull Trout Lake Whole Ecosystem 15N Tracer Study, David Epstein, Wayne Wurtsbaugh
Nitrogen Transport Through A Sub-Alpine Lake: Bull Trout Lake Whole Ecosystem 15N Tracer Study, David Epstein, Wayne Wurtsbaugh
David Epstein
No abstract provided.
Ecology Of Injury In Marine Sedimentary Habitats: Effects Of Repeated Injury On Infaunal Condition And Sediment Bioturbation, Sara M. Lindsay
Ecology Of Injury In Marine Sedimentary Habitats: Effects Of Repeated Injury On Infaunal Condition And Sediment Bioturbation, Sara M. Lindsay
University of Maine Office of Research Administration: Grant Reports
The majority of the ocean floor is sedimentary, and marine sediments play a key role in the flux of nutrients and organic matter in the ocean. Via their feeding and other activities, organisms living in marine sediments influence benthic-pelagic coupling by processing and redistributing organic matter supplied from the water column and influencing the supply of nutrients. These activities also influence recruitment and competitive interactions. Thus, factors that impact infaunal activity can secondarily impact sediment biogeochemistry and benthic communities. Non-lethal loss of body tissue is a common event for marine infauna such as polychaetes, and numerous studies have investigated the …
The Fierce Green Fire: Vol. 3 Issue 11, Wofford College Environmental Studies Program
The Fierce Green Fire: Vol. 3 Issue 11, Wofford College Environmental Studies Program
The Fierce Green Fire
No abstract provided.
Nanoroughened Surfaces For Efficient Capture Of Circulating Tumor Cells Without Using Capture Antibodies, Weiqiang Chen, Shinuo Weng, Feng Zhang, Steven Allen, Xiang Li, Liwei Bao, Raymond H. W. Lam, Jill A. Macoska, Sofia D. Merajver, Jianping Fu
Nanoroughened Surfaces For Efficient Capture Of Circulating Tumor Cells Without Using Capture Antibodies, Weiqiang Chen, Shinuo Weng, Feng Zhang, Steven Allen, Xiang Li, Liwei Bao, Raymond H. W. Lam, Jill A. Macoska, Sofia D. Merajver, Jianping Fu
Weiqiang Chen
Circulating tumor cells (CTCs) detached from both primary and metastatic lesions represent a potential alternative to invasive biopsies as a source of tumor tissue for the detection, characterization and monitoring of cancers. Here we report a simple yet effective strategy for capturing CTCs without using capture antibodies. Our method uniquely utilized the differential adhesion preference of cancer cells to nanorough surfaces when compared to normal blood cells and thus did not depend on their physical size or surface protein expression, a significant advantage as compared to other existing CTC capture techniques.
Nonparametric Inference For Meta Analysis With Fixed Unknown, Study-Specific Parameters, Brian Claggett, Minge Xie, Lu Tian
Nonparametric Inference For Meta Analysis With Fixed Unknown, Study-Specific Parameters, Brian Claggett, Minge Xie, Lu Tian
Harvard University Biostatistics Working Paper Series
No abstract provided.
Divergent Carbon Dynamics Under Climate Change In Forests With Diverse Soils, Tree Species, And Land Use Histories, Robert M. Scheller, Alec M. Kretchun, Steve Van Tuyl, Kenneth L. Clark, Melissa S. Lucash, John Hom
Divergent Carbon Dynamics Under Climate Change In Forests With Diverse Soils, Tree Species, And Land Use Histories, Robert M. Scheller, Alec M. Kretchun, Steve Van Tuyl, Kenneth L. Clark, Melissa S. Lucash, John Hom
Environmental Science and Management Faculty Publications and Presentations
Accounting for both climate change and natural disturbances—which typically result in greenhouse gas emissions—is necessary to begin managing forest carbon sequestration. Gaining a complete understanding of forest carbon dynamics is, however, challenging in systems characterized by historic over-utilization, diverse soils and tree species, and frequent disturbance. In order to elucidate the cascading effects of potential climate change on such systems, we projected forest carbon dynamics, including soil carbon changes, and shifts in tree species composition as a consequence of wildfires and climate change in the New Jersey pine barrens (NJPB) over the next 100 years. To do so, we used …
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Georgia Southern Physics Professor Discusses December Doomsday Scenario
Studies On Molecular Sieve Crystallization And Heteroatomic Substitution, Adam R. Macintosh
Studies On Molecular Sieve Crystallization And Heteroatomic Substitution, Adam R. Macintosh
Electronic Thesis and Dissertation Repository
Molecular sieves have been scientifically and industrially important materials since their inception. These porous, crystalline networks of tetrahedrally coordinated atoms bridged by oxygen are known for their extremely high surface area and low density, making them excellent systems for catalysis. The framework of the AlPO4 family of molecular sieves is itself non-catalytic, but through heteroatomic substitution these materials can diversify into the catalytically active silicoaluminophosphate (SAPO) and metalloaluminophosphate (MAPO) families of heterogeneous acid and redox catalysts. Research into the methods by which these substitutions occur, and the effects therein on the crystallization of the sieves, is of great importance, …
The Use Of Rhenium (Vii) Oxide As A Catalyst For The Substution Of Hemiacetals, Michael W. Richardson
The Use Of Rhenium (Vii) Oxide As A Catalyst For The Substution Of Hemiacetals, Michael W. Richardson
Department of Chemistry: Dissertations, Theses, and Student Research
Rhenium (VII) oxides have proven to be mild and versatile catalysts in organic chemistry. They have previously been utilized to catalyze the transposition of allylic aclohols, Prins reaction, and reductive amination to name a few examples. This thesis reports the application of Re(VII) oxide in the substitution of hemi-acetals with a wide array of nucleophiles including oxo-, thio-, and peroxy-nucleophiles. These reactions proceed efficiently with rapid reaction times and high yields.
Adviser: Patrick H. Dussault
Characterization Of Novel Ichnofossils In Meteorite Impact Glass From The Ries Impact Structure, Germany, Haley M. Sapers
Characterization Of Novel Ichnofossils In Meteorite Impact Glass From The Ries Impact Structure, Germany, Haley M. Sapers
Electronic Thesis and Dissertation Repository
The initial catastrophic biological effects of hypervelocity impacts are well established. However, a growing body of evidence suggests that meteorite impact events have beneficial effects for microbial life. This, in turn, has led many to suggest that impact craters may have been important habitats for life on early Earth. Any large meteorite impact into a water-rich target on a solid planetary body has the potential to generate hydrothermal systems. Impact-generated hydrothermal systems expand the potential environments for microbial colonization to environments without endogenous volcanic heat sources to drive hydrothermal activity. Examination of impact glass from the Ries impact structure, Germany, …
Site Selection By Migratory Shorebirds In Oregon Estuaries Over Broad And Fine Spatial Scales, Aileen Kilpatrick Miller
Site Selection By Migratory Shorebirds In Oregon Estuaries Over Broad And Fine Spatial Scales, Aileen Kilpatrick Miller
Dissertations and Theses
Many migratory shorebirds rely on estuaries as stop-over sites to refuel during migration, and the loss of stop-over sites is a primary threat to shorebird populations on the West Coast of the United States (e.g. Calidris alpina pacifica, C. mauri). Conservation and research has focused on the largest of these sites; however, smaller estuaries also host thousands of migratory shorebirds. Furthermore, the reasons for site selection are largely unknown. Estuarine inter-tidal microhabitats are non-uniform and both abiotic and biotic factors may serve as predictors of whether an abundance of shorebirds will use a site. I investigated shorebird site selection on …
Integration On Locally Compact Noncommutative Spaces, A L. Carey, V Gayral, Adam C. Rennie, F A. Sukochev
Integration On Locally Compact Noncommutative Spaces, A L. Carey, V Gayral, Adam C. Rennie, F A. Sukochev
Associate Professor Adam Rennie
We present an ab initio approach to integration theory for nonunital spectral triples. This is done without reference to local units and in the full generality of semifinite noncommutative geometry. The main result is an equality between the Dixmier trace and generalised residue of the zeta function and heat kernel of suitable operators. We also examine definitions for integrable bounded elements of a spectral triple based on zeta function, heat kernel and Dixmier trace techniques. We show that zeta functions and heat kernels yield equivalent notions of integrability, which imply Dixmier traceability.
A Coloured Petri Net Based Approach For Flexible Agent Interactions, Quan Bai, Minjie Zhang, Fenghui Ren
A Coloured Petri Net Based Approach For Flexible Agent Interactions, Quan Bai, Minjie Zhang, Fenghui Ren
Dr Fenghui Ren
As one of the most important artificial intelligence techniques, multi-agent systems are widely applied in many fields. In a multi-agent system, agent interactions are established through exchanging messages by following some interaction protocols. However, as the application domains of MASs are getting more and more complex, some limitations of current multi-agent interaction mechanisms are rising up. To cover some limitations of current agent interaction mechanisms, in this paper, we propose a Coloured Petri Net based approach to enable flexible agent interactions in open environments. This approach adopts Coloured Petri Net techniques to model agent interaction protocols, and separates interaction protocols …
Desire-Based Negotiation In Electronic Marketplaces, Minjie Zhang, Fenghui Ren
Desire-Based Negotiation In Electronic Marketplaces, Minjie Zhang, Fenghui Ren
Dr Fenghui Ren
No abstract provided.