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2016

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Articles 3151 - 3180 of 29041

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How To Quantify The Temporal Storage Effect Using Simulations Instead Of Math, Stephen P. Ellner, Robin E. Snyder, Peter B. Adler Nov 2016

How To Quantify The Temporal Storage Effect Using Simulations Instead Of Math, Stephen P. Ellner, Robin E. Snyder, Peter B. Adler

Wildland Resources Faculty Publications

The storage effect, originally a theoretical hypothesis to explain how ecologically similar species could coexist by responding differently to environmental variability (Chesson & Warner, 1981; Shmida & Ellner, 1984), has developed into a core concept in community ecology (Mittelbach 2012)with empirical support from communities of prairie grasses (Adler et al., 2006), desert annual plants (Pake & Venable, 1995; Angert et al., 2009), tropical trees (Usinowicz et al., 2012) and zooplankton(Caceres, 1997). An essential step in this maturation was mathematical analysis (Chesson, 1994, 2000a) that identified the conditions required for the storage effect to help stabilize coexistence of competitors. For the …

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Grazing Effects On Precipitation-Driven Associations Between Sagebrush And Perennial Grasses, Maike F. Holthuijzen, Kari E. Veblen Nov 2016

Grazing Effects On Precipitation-Driven Associations Between Sagebrush And Perennial Grasses, Maike F. Holthuijzen, Kari E. Veblen

Wildland Resources Faculty Publications

While many studies have addressed the effect of individual stresses on plant—plant associations, few have addressed the effects of co-occurring stresses. We therefore investigated how associations between Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) and 2 native grasses (Poa secunda and Elymus elymoides) responded to different combinations of grazing and moisture stresses in the Great Basin, USA. Positive (i.e., facilitative) interactions between nurse plants and their beneficiaries are predicted to increase with increasing moisture limitation and grazing stress, but these interactions may break down at extreme levels of stress. We hypothesized that (1) competitive interactions and …

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Deanotes, College Of Science And Technology, Armstrong State University Nov 2016

Deanotes, College Of Science And Technology, Armstrong State University

College of Science & Technology Dean's Notes (Archived)

No abstract provided.

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Can Asians Be Creative?, Chua, Roy Y. J., Jerry Zremski Nov 2016

Can Asians Be Creative?, Chua, Roy Y. J., Jerry Zremski

Research Collection Lee Kong Chian School Of Business

A crotchety American named Henry Ford invented a modern, fast and efficient way to manufacture automobiles and a Japanese man named Eiji Toyoda refined and perfected it. A series of innovators across the western world developed the television - and the tech specialists at Sony, Toshiba and a host of other Asian companies found ways to make TVs better, cheaper, faster. And an idiosyncratic Californian named Steve Jobs invented a company that made a smart phone for the masses - and then outsourced the manufacturing to China. If you detect a pattern here, you are not alone. Asia may be …

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The Mediterranean Decision Support System For Marine Safety Dedicated To Oil Slicks Predictions, G Zodiatis, M De Dominicis, L Perivoliotis, Et Al Nov 2016

The Mediterranean Decision Support System For Marine Safety Dedicated To Oil Slicks Predictions, G Zodiatis, M De Dominicis, L Perivoliotis, Et Al

School of Biological and Marine Sciences

In the Mediterranean sea the risk from oil spill pollution is high due to the heavy traffic of merchant vessels for transporting oil and gas, especially after the recent enlargement of the Suez canal and to the increasing coastal and offshore installations related to the oil industry in general. The basic response to major oil spills includes different measures and equipment. However, in order to strengthen the maritime safety related to oil spill pollution in the Mediterranean and to assist the response agencies, a multi-model oil spill prediction service has been set up, known as MEDESS-4MS (Mediterranean Decision Support System …

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A Structured And Unstructured Grid Relocatable Ocean Platform For Forecasting (Surf), F Trotta, E Fenu, N Pinardi, D Bruciaferri, Et Al Nov 2016

A Structured And Unstructured Grid Relocatable Ocean Platform For Forecasting (Surf), F Trotta, E Fenu, N Pinardi, D Bruciaferri, Et Al

School of Biological and Marine Sciences

We present a numerical platform named Structured and Unstructured grid Relocatable ocean platform for Forecasting (SURF). The platform is developed for short-time forecasts and is designed to be embedded in any region of the large-scale Mediterranean Forecasting System (MFS) via downscaling. We employ CTD data collected during a campaign around the Elba island to calibrate and validate SURF. The model requires an initial spin up period of a few days in order to adapt the initial interpolated fields and the subsequent solutions to the higher-resolution nested grids adopted by SURF. Through a comparison with the CTD data, we quantify the …

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Exposure To Tritiated Water At An Elevated Temperature: Genotoxic And Transcriptomic Effects In Marine Mussels (M. Galloprovincialis)., Lorna J. Dallas, Tim P. Bean, Andrew Turner, Brett P. Lyons, Awadhesh N. Jha Nov 2016

Exposure To Tritiated Water At An Elevated Temperature: Genotoxic And Transcriptomic Effects In Marine Mussels (M. Galloprovincialis)., Lorna J. Dallas, Tim P. Bean, Andrew Turner, Brett P. Lyons, Awadhesh N. Jha

School of Geography, Earth and Environmental Sciences

Temperature is an abiotic factor of particular concern for assessing the potential impacts of radionuclides on marine species. This is particularly true for tritium, which is discharged as tritiated water (HTO) in the process of cooling nuclear institutions. Additionally, with sea surface temperatures forecast to rise 0.5 - 3.5 C in the next 30-100 years, determining the interaction of elevated temperature with radiological exposure has never been more relevant. We assessed the tissue-specific accumulation, transcriptional expression of key genes, and genotoxicity of tritiated water to marine mussels at either 15 or 25 C, over a 7 day time course with …

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A Study Of Arsenic Speciation In Soil, Irrigation Water And Plant Tissue: A Case Study Of The Broad Bean Plant, Vicia Faba., Bashdar A. Sadee, Mike E. Foulkes, Steve J. Hill Nov 2016

A Study Of Arsenic Speciation In Soil, Irrigation Water And Plant Tissue: A Case Study Of The Broad Bean Plant, Vicia Faba., Bashdar A. Sadee, Mike E. Foulkes, Steve J. Hill

School of Geography, Earth and Environmental Sciences

Samples of soil, the broad bean plant, Vicia faba and irrigation water were collected from the same agricultural site in Dokan, in the Kurdistan region of Iraq. Total arsenic and arsenic speciation were determined in all materials by ICP-MS and HPLC-ICP-MS, respectively. Available arsenic (11%) was also determined within the soil, together with Cd, Cr, Cu, Ni, Zn, Fe and Mn. The concentrations of total arsenic were: soil (5.32μgg(-1)), irrigation water (1.06μgL(-1)), roots (2.065μgg(-1)) and bean (0.133μgg(-1)). Stems, leaves and pods were also measured. Inorganic As(V) dominated soil (90%) and root (78%) samples. However, organo-arsenic (MMA, 48% and DMA, 19%) …

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State Ownership And Corporate Innovation Efficiency, Jerry X. Cao, Douglas J. Cumming, Sili Zhou, Lu Zhou Nov 2016

State Ownership And Corporate Innovation Efficiency, Jerry X. Cao, Douglas J. Cumming, Sili Zhou, Lu Zhou

Research Collection Lee Kong Chian School Of Business

The conventional wisdom is that state ownership may hinder patenting through reduced incentives and pronounced agency problems associated with state-owned enterprises (SOEs). Empirical evidence from a variety of contexts, including the U.S., Europe, and China, is consistent with this view, including evidence that shows that reductions in state ownership are associated with an increase in patent counts. In this paper, we investigate the innovative efficiency of Chinese SOEs. Innovative efficiency refers to patents/R&D expenditure, and not patent counts. The data indicate that SOEs, and especially central government SOEs, are substantially more innovatively efficient than non-SOEs. The relative innovative efficiency of …

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Psychological Stress Among Risks For Alzheimer's Disease, Maria C. Norton, Elizabeth B. Fauth Nov 2016

Psychological Stress Among Risks For Alzheimer's Disease, Maria C. Norton, Elizabeth B. Fauth

All Current Publications

This fact sheet defines stress, stressors and reaction to them, what stress does to our brain and body, and how stress effects can accumulate over time. It also includes tips on reducing the effects of stress on the brain.

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Considerations For Sage-Grouse Management Objectives, David K. Dahlgren, Terry A. Messmer, Eric T. Thacker Nov 2016

Considerations For Sage-Grouse Management Objectives, David K. Dahlgren, Terry A. Messmer, Eric T. Thacker

All Current Publications

This fact sheet describes ways to conserve and manage sage-grouse and includes information on population dynamics; movements, habitat, and climatic interactions; and management objectives.

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Lack Of Association Between Slc30a8 Variants And Type 2 Diabetes In Mexican American Families, Hemant Kulkarni, Manju Mamtani, Juan M. Peralta, Vincent P. Diego, Thomas D. Dyer, Harald H. H. Goring, Laura Almasy, Sarah Williams-Blangero, Michael C. Mahaney, Ravindranath Duggirala, Joanne E. Curran, John Blangero Nov 2016

Lack Of Association Between Slc30a8 Variants And Type 2 Diabetes In Mexican American Families, Hemant Kulkarni, Manju Mamtani, Juan M. Peralta, Vincent P. Diego, Thomas D. Dyer, Harald H. H. Goring, Laura Almasy, Sarah Williams-Blangero, Michael C. Mahaney, Ravindranath Duggirala, Joanne E. Curran, John Blangero

School of Medicine Publications

SLC30A8 encodes zinc transporter 8 which is involved in packaging and release of insulin. Evidence for the association of SLC30A8 variants with type 2 diabetes (T2D) is inconclusive. We interrogated single nucleotide polymorphisms (SNPs) around SLC30A8 for association with T2D in high-risk, pedigreed individuals from extended Mexican American families. This study of 118 SNPs within 50 kb of the SLC30A8 locus tested the association with eight T2D-related traits at four levels: (i) each SNP using measured genotype approach (MGA); (ii) interaction of SNPs with age and sex; (iii) combinations of SNPs using Bayesian Quantitative Trait Nucleotide (BQTN) analyses; and (iv) …

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Patent Silences, Dan L. Burk Nov 2016

Patent Silences, Dan L. Burk

Vanderbilt Law Review

A great deal has been said in recent years about patent disclosure. But to say that there is a disclosure function in the patent system implies that there is non-disclosure functioning in the patent system as well. For some information to be disclosed in a patent, other information must go undisclosed; for some things to be included, other things must be excluded. In this article I review the surprising number of doctrines that allow and encourage patent applicants to remain silent about aspects of their inventions. I find that some silences in patents are inadvertent, while some are deliberate; some …

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Photocopies, Patents, And Knowledge Transfer: "The Uneasy Case" Of Justice Breyer's Patentable Subject Matter Jurisprudence, Dmitry Karshtedt Nov 2016

Photocopies, Patents, And Knowledge Transfer: "The Uneasy Case" Of Justice Breyer's Patentable Subject Matter Jurisprudence, Dmitry Karshtedt

Vanderbilt Law Review

One aspect of Justice Stephen Breyer's discomfort with patents, as expressed in his opinion for the Supreme Court in Mayo v. Prometheus and his dissent from the order dismissing certiorari in LabCorp v. Metabolite, is strikingly similar to one of his critiques of copyright law in The Uneasy Case for Copyright, a well-known article he wrote as Professor Breyer more than forty-five years ago. In The Uneasy Case, Breyer argued that the burdens on duplication of technical articles imposed by copyright law restrict the flow of information and prevent scientists from enjoying spillover benefits of published research. His patent opinions …

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Contextualizing Patent Disclosure, Colleen V. Chien Nov 2016

Contextualizing Patent Disclosure, Colleen V. Chien

Vanderbilt Law Review

One of the main justifications for a patent system is that patents disclose useful technical information that others can learn from. However, patents are not performing this function well. The average patent is written in legalese, uses vague language, and is hard to connect to commercial activity. Legal scholars have responded with calls to improve the patent document through better writing, more examples, and better enforcement of patent doctrines. The courts have sought to ensure that patent specifications are robust and justify the grant of a monopoly. This follows from the Supreme Court's characterization of technical teachings within a patent …

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Resiliency And Collapse: Lake Trout, Sea Lamprey, And Fisheries Management In Lake Superior, Nancy Langston Nov 2016

Resiliency And Collapse: Lake Trout, Sea Lamprey, And Fisheries Management In Lake Superior, Nancy Langston

Michigan Tech Publications, Part 1

No abstract provided.

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Examining The Relationships Of Socioeconomic Status, Perceived Parental Supervision, And Reported Neighborhood Safety On Adolescents’ Smoking Behaviors And Mental Health Using The 2009 California Health Interview Survey, Colette Laroy Beetz Nov 2016

Examining The Relationships Of Socioeconomic Status, Perceived Parental Supervision, And Reported Neighborhood Safety On Adolescents’ Smoking Behaviors And Mental Health Using The 2009 California Health Interview Survey, Colette Laroy Beetz

Theses and Dissertations

This study sought out to explore the relationships between parental supervision, poverty levels, and neighborhood safety and the impacts these factors have upon adolescent mental health needs, intervention, and smoking status. In addition, ethnicity groupings and poverty levels were examined to determine additional influence factors on mental health issues. The findings demonstrate that higher levels parental supervision and neighborhood safety predict higher reports of not needing mental health treatment and lower reports of smoking. In relation to mental health treatment, only poverty level demonstrated a significant contribution, suggesting that the lower the poverty level, the less likely treatment will be …

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Psychological Well-Being And Heart Disease: The Utility Of Mental Health And Management Plans, Jennifer Anne Heath Nov 2016

Psychological Well-Being And Heart Disease: The Utility Of Mental Health And Management Plans, Jennifer Anne Heath

Theses and Dissertations

This paper explores the correlation between mental health and coronary heart disease (CHD) and the usefulness of including mental health treatment into disease management plans. Consistent with previous research and literature regarding the correlation between CHD and depression, results suggest individuals experiencing CHD experience more symptoms of depression, including feelings of hopelessness and worthlessness. Additionally, individuals with CHD also tend to experience more difficulty with relationships and completing household chores. Individuals who have management plans created by their healthcare providers experience less depressive symptoms than those without management plans. This suggests management plans are crucial in the treatment of mental …

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The Impact Of Traumatic Life Events: Reactions And Resilience – Part Ii, Harvey J. Burnett Jr Nov 2016

The Impact Of Traumatic Life Events: Reactions And Resilience – Part Ii, Harvey J. Burnett Jr

Faculty Publications

No abstract provided.

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A General Elliptic Nonlinear System Of Multiple Functions With Application, Timothy Robertson, Joon Hyuk Kang Nov 2016

A General Elliptic Nonlinear System Of Multiple Functions With Application, Timothy Robertson, Joon Hyuk Kang

Faculty Publications

The purpose of this paper is to give a sufficient condition for the existence, nonexistence and uniqueness of positive solutions to a rather general type of elliptic system of the Dirichlet problem on a bounded domain Ω in Rn . We also investigate the effects of perturbation on the positive solutions to the system. The techniques used in this paper are upper-lower solutions, eigenvalues of operators, the maximum principles and spectrum estimates. The arguments also rely on some detailed properties for the solution of logistic equations. This result yields an algebraically computable criterion for the positive coexistence of competing species …

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A Copula-Based Approach For The Estimation Of Wave Height Records Through Spatial Correlation, R. Jane, Valle L Dalla, D. Simmonds, A. Raby Nov 2016

A Copula-Based Approach For The Estimation Of Wave Height Records Through Spatial Correlation, R. Jane, Valle L Dalla, D. Simmonds, A. Raby

School of Engineering, Computing and Mathematics

No abstract provided.

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Calculating Ethnicity Through The U.S. Census: The Basque Case, William A. Douglass Oct 2016

Calculating Ethnicity Through The U.S. Census: The Basque Case, William A. Douglass

BOGA: Basque Studies Consortium Journal

In preparation for the 1980 U. S. Census, the U.S. Census Bureau revamped considerably the way it defined, collected, and reported the ancestry of the American population. A long form of the census schedule was developed for application to one in six households. Prior to 1980, Basques were masked under Spanish nationals and French nationals in the final census reports and Basque-Americans were not distinguished at all. This article considers how Basque ethnicity came to be parsed and reported in three fashions—“Basque, Spanish,” “Basque, French,” and “Basque, n.e.c.” (e.g. “not elsewhere classified”). So it was now possible for Americans to …

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Full Issue 45(3) Oct 2016

Full Issue 45(3)

International Journal of Speleology

No abstract provided.

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Published Elsewhere And Thank You Oct 2016

Published Elsewhere And Thank You

The Winthrop McNair Research Bulletin

No abstract provided.

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Creating A Microcosm To Examine Salinity Tolerance Of Escherichia Coli In Beach Sand, Leigha Stahl, Victoria Frost, Matthew Heard Oct 2016

Creating A Microcosm To Examine Salinity Tolerance Of Escherichia Coli In Beach Sand, Leigha Stahl, Victoria Frost, Matthew Heard

The Winthrop McNair Research Bulletin

Escherichia coli (E. coli) is a gram-negative bacteria species that thrives in a variety of environments around the world. Due to its widespread prevalence, it is commonly used as an indicator for fecal pollution and other pathogens. One place where it is not often looked for is oceanic beaches because E. coli is inhibited by salt. However, recent research has shown that E. coli often thrives in sand at many oceanic beaches. To determine how it persists in sand, we created a microcosm simulating the intertidal zone of an oceanic beach. Using this microcosm, we examined how varying levels of …

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Expression, Purification, And Crystallization Of An Endoxylanase From Bacteroides Vulgatus, Jesslyn Park, Jason Hurlbert Oct 2016

Expression, Purification, And Crystallization Of An Endoxylanase From Bacteroides Vulgatus, Jesslyn Park, Jason Hurlbert

The Winthrop McNair Research Bulletin

Sustainable sources of energy are growing in demand as fossil fuels are rapidly expended. One such energy source is fuel ethanol generated from the fermentation of plant biomass by engineered bacterial biocatalysts. The creation of a biocatalyst capable of converting nearly any plant matter to fuel ethanol requires the identification of novel enzymes capable of degrading specific carbohydrate polymers and cloning these enzymes into a bacterial host. This study seeks to structurally characterize a novel xylanase of glycosyl hydrolase family 30 (GH30) from Bacteroides vulgatus, a bacterium found in the human gut microbiome, via x-ray crystallography. The gene for …

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Determination Of Phylo-Group Diversity Of Escherichia Coli In Environmental Sand Samples Collected From A South Carolina Beach, Savannah A. Moritzky, Victoria Frost, Matthew Heard Oct 2016

Determination Of Phylo-Group Diversity Of Escherichia Coli In Environmental Sand Samples Collected From A South Carolina Beach, Savannah A. Moritzky, Victoria Frost, Matthew Heard

The Winthrop McNair Research Bulletin

Escherichia coli (E. coli) is a common bacterial species that can persist in many environments found around the world. One environment where it can be found that is of particular concern is an oceanic beach, where it can serve as an indicator of both fecal and microbial pollution. While the majority of strains of E. coli are non-pathogenic to humans, some phylo-groups are associated with virulent strains and could cause disease. Therefore, it is of critical concern that we determine where this E. coli is coming from and whether it is potentially harmful to human health and well-being. In this …

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Comparing The Tensile And Compressive Young’S Moduli Of Cortical Bone, Deshawn Hoskins, Meir Barak Oct 2016

Comparing The Tensile And Compressive Young’S Moduli Of Cortical Bone, Deshawn Hoskins, Meir Barak

The Winthrop McNair Research Bulletin

Various methods have been used in the testing of the mechanical properties of cortical bone, specifically the young’s modulus. However, in the case of the material’s Young’s modulus in compression and tension, there is a significant disagreement among the published findings that may be a result of experimental artifacts. This study attempts to solve the scientific question of whether cortical bone is stiffer in compression or tension and if so to understand why that is. Using small samples taken from the distal portion of the neck of a femur belonging to a young white tailed deer, both the Young’s moduli …

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Front Cover Oct 2016

Front Cover

The Winthrop McNair Research Bulletin

No abstract provided.

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Censoring Unbiased Regression Trees And Ensembles, Jon Arni Steingrimsson, Liqun Diao, Robert L. Strawderman Oct 2016

Censoring Unbiased Regression Trees And Ensembles, Jon Arni Steingrimsson, Liqun Diao, Robert L. Strawderman

Johns Hopkins University, Dept. of Biostatistics Working Papers

This paper proposes a novel approach to building regression trees and ensemble learning in survival analysis. By first extending the theory of censoring unbiased transformations, we construct observed data estimators of full data loss functions in cases where responses can be right censored. This theory is used to construct two specific classes of methods for building regression trees and regression ensembles that respectively make use of Buckley-James and doubly robust estimating equations for a given full data risk function. For the particular case of squared error loss, we further show how to implement these algorithms using existing software (e.g., CART, …

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