Digital Commons Network^™

A New Model: Improving Adult Experiences In The Holy Land With Effective Pre-Departure Information, Resources And Procedures, Sarah A. Loan

Capstone Collection

Since September 11, 2001, Group Travel Directors (GTD) has noted an increase in self-reported anxiety among adult travelers preparing to depart to the Holy Land. This observation has been made by long-term employees both objectively and subjectively by comparing evaluation scores, cancellation percentages, tracking numbers of phone calls from anxious travelers and through staff accounts of conversations with travelers. GTD staff reports that clients often are inclined to make rash decisions based on perfunctory judgments influenced by media coverage.

GTD has collected evaluations from adult travelers for more than twenty years in an effort to better understand traveler perceptions of …

Study Abroad And Identity: The African American Experience, Alicia Ranney

Capstone Collection

Not all students are alike, nor should they be treated as 'one size fits all' in study abroad. Students have different backgrounds, goals, and expectations of what they will gain from an international academic experience. Minority students face different types of challenges in study abroad than their non-minority counterparts.

This paper seeks to answer the question “does study abroad change the identity of African American students?” and examines the challenges of identity and racism and how those two factors may decrease participation rates of African Americans in study abroad. Students from Marygrove College in Detroit, Michigan were surveyed before and …

Current State Of Weed Management In Organic And Conventional Cropping Systems, Alec F. Mcerlich, R. A. Boydston

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Crop losses due to weeds result in reduced yields and quality and increases in harvest costs. Weed management often requires major resource inputs to produce a successful crop. Herbicides are central to the conventional approach to weed management, and they have allowed the grower to reduce management priority, time, effort, and cost of managing weeds. Their use has at times come at a price such as herbicide-resistant weeds, environmental damage, reduced water quality, and loss of genetic diversity. Although growers use a combination of management practices to control weeds, differences between those used in conventional agriculture compared to organic production …

Soil Enzyme Activities During The 2011 Texas Record Drought/Heatwave And Implications To Biogeochemical Cycling And Organicmatter Dynamics, Veronica Acosta-Martinez, Jennifer Moore-Kucera, Jon Cotton, T. Gardner, David Wester

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Extreme droughts and heat waves due to climate change may have permanent consequences on soil quality and functioning in agro ecosystems. During November 2010 to August 2011, the Southern High Plains (SHP) region of Texas, U.S., a large cotton producing area, received only 39.6 mm of precipitation(vs. the historical avg. of 373 mm) and experienced the hottest summer since record keeping began in 1911. Several enzyme activities (EAs) important in biogeochemical cycling were evaluated in two soils (a loam and a sandy loam at 0–10 cm) with a management history of monoculture (continuous cotton) or rotation (cotton and sorghum or …

Not All Gmos Are Crop Plants: Non-Plant Gmo Applications In Agriculture, K. E. Hokanson, W. O. Dawson, A. M. Handler, M. F. Schetelig, R. J. St. Leger

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Since tools of modern biotechnology have become available, the most commonly applied and often discussed genetically modified organisms are genetically modified crop plants, although genetic engineering is also being used successfully in organisms other than plants, including bacteria, fungi, insects, and viruses. Many of these organisms, as with crop plants, are being engineered for applications in agriculture, to control plant insect pests or diseases. This paper reviews the genetically modified non-plant organisms that have been the subject of permit approvals for environmental release by the United States Department of Agriculture/Animal and Plant Health Inspection Service since the US began regulating …

Retention Of Tannin-C Is Associated With Decreased Soluble Nitrogen And Increased Cation Exchange Capacity In A Broad Range Of Soils, Jonathan J. Halvorson, Javier M. Gonzalez, Ann E. Hagerman

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Phenolic compounds, called tannins, can be retained by soil and affect soluble N but have been studied in only a few soil types. Surface samples (0–10 cm), collected from the United States and Canada, were treated with water (Control) or solutions containing procyanidin, catechin, ß-1,2,3,4,6-pentagalloyl-O-Dglucose (PGG), tannic acid, gallic acid, or methyl gallate. Soluble C and N in treatment supernatants and after incubation (16 h, 80°C) were measured to determine retention of treatment C and effects on soluble N and cation exchange capacity (CEC). Retention varied significantly with treatment (T) and soil order (S) and was greatest for PGG > tannic …

Wireless Sensor Network Effectively Controls Center Pivot Irrigation Of Sorghum, Susan A. O'Shaughnessy, Steven R. Evett, Paul D. Colaizzi, Terry A. Howell

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Automatic irrigation scheduling has been demonstrated using wired sensors and sensor network systems with subsurface drip and moving irrigation systems. However, there are limited studies that report on crop yield and water use efficiency resulting from the use of wireless networks to automatically schedule and control irrigations. In this 2011 study, a multinode wireless sensor network (WSN) system was mounted onto a six-span center pivot equipped with a commercial variable rate irrigation (VRI) system. Data from the WSN was used to calculate an integrated crop water stress index (iCWSI) threshold for automatic irrigation scheduling of grain sorghum. Crop response to …

“A Sufficient Number": The Historic African American Community Of Peterborough In Warren, Maine, Kate E. Mcmahon Ma

All Student Scholarship

Warren, Maine is located in the midcoast region of southeastern Maine. The small town has a long history that is intrinsically linked to the maritime activities of the region, which began in the mid-seventeenth century. Sometime around 1782, Sarah Peters was brought to Warren as a slave on a ship owned by Captain James McIntyre. After slavery was outlawed in Massachusetts in 1783/1784, Sarah successfully sued for her freedom and married a man named Amos Peters. Together, they raised a large, mixed-racial family, and settled near South Pond, a good distance away from the main village. By the 1820s, they …

Leadership Development For Pro-Environmental Behavior Utilizing Peer To Peer Communication And Learning: An Academic Pilot Project, Mark Wayne Carrera Ma

All Student Scholarship

There is a cultural perception that the onus of responsibility for shark conservation falls on the shoulders of environmental and scientific communities’ leaders. Given the diminutive size of these two communities when compared to the vastness of American society, responsibilities should be shared by leaders of educational organizations who can communicate with greater populations. The general public must be encouraged to act pro-environmentally for effective shark conservation to ever take place in the world.

Gumbo Yearbook, Class Of 2013, Louisiana State University And Agricultural And Mechanical College

Gumbo Yearbook

The Gumbo yearbook chronicles the entire academic year at LSU. In words and especially photos, the Gumbo shows the people, places, and events that make each year unique. In addition to formal portraits of schools and departments, the book contains hundreds of snapshots of students with their friends and dozens of pages showcasing organizations.

Osteopathic Medical Student Knowledge Of And Attitudes Toward Chronic Pain, Amelia Grace Gradwell

PCOM Psychology Dissertations

Chronic pain is a prevalent presenting problem for patients in medical settings, yet how physician knowledge and attitudes about those with chronic pain may influence the treatment of this condition is not fully understood. The purpose of this study was to evaluate the knowledge and attitudes of osteopathic medical students about pain management, with particular emphasis on chronic pain, in an effort to address the lack of chronic pain research currently available. A review of current literature, including an overview of chronic pain, is included. This study used original data, collected from first and fourth year D.O. students at a …

The African American Family's Influence On Academic Achievement Of Urban Secondary Students, Frank A. Edwards

PCOM Psychology Dissertations

One of the most unyielding challenges of the American Educational System to
date has been determining the unique factors that African American families have on the academic achievement of urban high school students. The purpose of this qualitative study was to determine: (1) what effect does the African American Family’s influence have on urban secondary students achievement; (2) what impact does academic achievement have on the life of an urban African-American student; and (3) what contributing factors stimulate academic achievement in urban secondary students. The African-American family and its influence on student achievement included the following themes: family and familial …

Abolishing Activity Against Ascorbate In A Cytosolic Ascorbate Peroxidase From Switchgrass, Frank A. Kovacs, Gautam Sarath, Kyle Woodworth, Paul Twigg, Christian M. Tobias

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Switchgrass (Panicum virgatum L.) is being developed as a bioenergy species. Recently an early version of its genome has been released permitting a route to the cloning and analysis of key proteins. Ascorbate peroxidases (APx) are an important part of the antioxidant defense system of plant cells and present a well studied model to understand structure–function relationships. Analysis of the genome indicates that switchgrass encodes several cytosolic ascorbate peroxidases with apparent varying levels of tissue expression. A major cytosolic ascorbate peroxidase was thus selected for further studies. This gene was cloned and expressed in Escherichia coli cells to obtain …

Insect Communities In Soybeans Of Eastern South Dakota: The Effects Of Vegetation Management And Pesticides On Soybean Aphids, Bean Leaf Beetles, And Their Natural Enemies, Jonathan G. Lundgren, Louis S. Hesler, Sharon A. Clay, Scott F. Fausti

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Although most pests of soybeans, Gycine max (L.), in the Northern Great Plains are managed using pesticides, farm management practices that encourage biodiversity offer promising long-term, sustainable solutions for controlling insect and weed pests profitably. The recent invasion of the Northern Great Plains by the soybean aphid (Aphis glycines Matsumura; Hemiptera: Aphididae) has had potentially important implications for insect communities in soybeans of this region, although recent descriptions of this regional community are scarce. We describe how three pest management systems that vary in the intensity with which they rely on herbicides and insecticides (chemically intensive, reduced chemical, and …

Resistance Evolution To The First Generation Of Genetically Modified Diabrotica-Active Bt-Maize Events By Western Corn Rootworm: Management And Monitoring Considerations, Yann Devos, Lisa N. Meihls, Jozsef Kiss, Bruce E. Hibbard

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Western corn rootworm (Diabrotica virgifera virgifera; WCR) is a major coleopteran maize pest in North America and the EU, and has traditionally been managed through crop rotation and broad-spectrum soil insecticides. Genetically modified Bt-maize offers an additional management tool for WCR and has been valuable in reducing insecticide use and increasing farm income. A concern is that the widespread, repeated, and exclusive deployment of the same Bt-maize transformation event will result in the rapid evolution of resistance in WCR. This publication explores the potential of WCR to evolve resistance to plant-produced Bt-toxins from the first …

Benefit Finding, Self-Efficacy Beliefs And Employment Outcomes For Individuals Living With Multiple Sclerosis, Megan E. Clancy

Seton Hall University Dissertations and Theses (ETDs)

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Intimate Liability: Emotional Harm, Family Law, And Stereotyped Narratives In Interspousal Torts, Fernanda Nicola

Scholarly Articles in Law Reviews & Journals

Tort liability expanded in the twentieth century, a shift scholars generally attribute to the reorganization of tort law around the fault principle. In privileging compensation and deterrence, this reconfiguration ended various restrictions on liability, long viewed as arbitrary, including limits to the recovery for emotional harm and interspousal immunities. Tort and family law scholars alike portray the end of such immunities as a milestone for gender equality. Their elimination enables spouses and partners to secure compensation for emotional and physical abuse arising in intimate relationships. Yet, tort law is not operating in this way. On the contrary, by endorsing a …

Lessons From Personhood's Defeat: Abortion Restrictions And Side Effects On Women's Health, Maya Manian

Scholarly Articles in Law Reviews & Journals

State personhood laws pose a puzzle. These laws would establish fertilized eggs as persons and, by doing so, would ban all abortions. Many states have consistently supported laws restricting abortion care. Yet, thus far no personhood laws have passed. Why? This Article offers a possible explanation and draws lessons from that explanation for understanding and resisting abortion restrictions more broadly. I suggest that voters’ recognition of the implications of personhood legislation for health issues other than abortion may have led to personhood’s defeat. In other words, opponents of personhood proposals appear to have successfully reconnected abortion to pregnancy care, contraception, …

Enforcing Masculinities At The Borders, Jamie Abrams

Scholarly Articles in Law Reviews & Journals

“American men have no history,” declared pioneering masculinities scholar, Michael Kimmel. Masculinities, the study of how men relate to each other and construct their identities, can be used as a powerful sociological and legal tool to understand institutions, power structures, and human relations. While the history of American immigration law has revealed rich multi-dimensional narratives of class, race, and domestic and international politics, sparse historical work has considered the masculinities dimensions of immigration law.

This Article considers how unpacking the masculinities dimensions of our paradigmatic shifts in immigration policy might offer an additional - even unifying - dimension to previously …

The Psychometric Properties Of The Mccarron Assessment Of Neuromuscular Development As A Longitudinal Measure With Australian Youth, Beth P. Hands, Dawne Larkin, Elizabeth Rose

Health Sciences Papers and Journal Articles

The importance of considering age and sex differences in the assessment of motor performance has been largely overlooked. This study examines the psychometric properties of the US developed McCarron Assessment of Neuromuscular Development (MAND) using data from a longitudinal sample of 986 Australian youth at 10, 14 and 17 years. A key finding was the sex and age interaction of the Neuromuscular Developmental Index (NDI) (F = 121.46, p < .001). Males had a significantly lower mean NDI score at 10 years and the females had a lower score at 17 years. The factor structure differed from the US samples (McCarron, 1997) at each age and between males and females. The sex specific analyses showed that the underlying structure was more complex for younger females. Although the MAND remains a …

Trichoptera Of Mindoro, The Philippines I. New Species And Records From The Baroc River Catchment, Roxas, Oriental Mindoro (Insecta, Trichoptera), Hendrik Freitag, Wolfram Mey

Biology Faculty Publications

The study of a collection of caddisflies from Mindoro yielded a total of 34 species. Eight species proved to be unknown taxa and are described in the present article as: Rhyacophila crenophysetis spec. nov., Agapetus parallelaria spec. nov., Stactobia roxasi spec. nov., Paduniella vicentis spec. nov., Paduniella prodita spec. nov., Psychomyia taugadensis spec. nov., Tinodes hypoplectis spec. nov., and Ecnomus biundularia spec. nov. A list of all collected species is provided.

A New Intertidal Shore Bug (Heteroptera: Saldidae) From The Philippines, Hendrik Freitag, Herbert Zettel, Clister V. Pangantihon

Biology Faculty Publications

Salduncula carmencitae sp.n. is described, its habitus and the paramere and parandria of the male are illustrated. This shore bug was found on Mindanao Island, the Philippines, in the intertidal zone. Habitat and behaviour of the species are briefly described. The distinguishing diagnostic characters of species of Salduncula Brown, 1954 are discussed.

Ancyronyx Erichson, 1847 (Coleoptera, Elmidae) From Mindoro, Philippines, With Description Of The Larvae And Two New Species Using Dna Sequences For The Assignment Of The Developmental Stages, Hendrik Freitag

Biology Faculty Publications

Ancyronyx buhid sp. n. and Ancyronyx tamaraw sp. n. are described based on adults and larvae, matched using their cox1 or cob DNA sequence data. Additional records of Ancyronyx schillhammeri Jäch, 1994 and Ancyronyx minerva Freitag & Jäch, 2007 from Mindoro are listed. The previously unknown larva of Ancyronyx schillhammeri is also described here, aided by cox1 data. The new species and larval stages are described in detail and illustrated by SEM and stacked microscopic images. Keys to the adult and larval Ancyronyx species of Mindoro and an updated checklist of Philippine Ancyronyx species are provided. The usefulness as bioindicators, …

Hydraena (Hydraenopsis) Ateneo, New Species (Coleoptera, Hydraenidae) And Other Aquatic Polyphaga From A Small Habitat Patch In A Highly Urbanized Landscape Of Metro Manila, Philippines, Hendrik Freitag

Biology Faculty Publications

Seven species of Hydraenidae, Hydrophilidae and Elmidae are recorded from temporary freshwater habitats at the Ateneo de Manila University Campus in the metropolitan area of Manila, Philippines. They were identified as Enochrus (Lumetus) fragiloides d’Orchymont, Helochares (Hydrobaticus) lepidus d’Orchymont, Helochares (Helochares) pallens (MacLeay), Hydraena (Hydraenopsis) scabra d’Orchymont, Hydraena (Hydraenopsis) palawanensis Freitag & Jäch (new record for Luzon Island), Stenelmis sp. A further hydraenid species was unknown to science and is newly described: Hydraena (Hydraenopsis) ateneo Freitag, sp. n. Aedeagus, gonocoxite, spermatheca, and female tergite X are illustrated by …

Identification Of Epithelial Stromal Interaction 1 And Epidermal Growth Factor Receptor As Novel Kruppel-Like Factor 8 Targets In Promoting Breast Cancer Progression, Tianshu Li

Electronic Theses and Dissertations

Breast cancer is the major cause of cancer death among women worldwide. Understanding the mechanisms underlying breast cancer progression remains urgent for developing effective treatment strategies to eliminate breast cancer mortality. Our recent studies have demonstrated that Krüppel-like transcriptional factor 8 (KLF8) plays a critical role for breast cancer progression. Other studies have shown that Epithelial stromal interaction 1 (EPSTI1), a recently identified stromal fibroblast-induced gene in non-invasive breast cancer cells and epidermal growth factor receptor (EGFR) are highly overexpressed in aggressively invasive breast carcinomas including triple negative breast cancers. In this thesis project, we demonstrate high co-overexpression of KLF8 …

Development Of Self-Assembling Mixed Protein Micelles With Temperature-Modulated Avidities, Allyson S.C. Soon, Michael H. Smith, Emily S. Herman, L. Andrew Lyon, Thomas H. Barker

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Elastin-like polypeptides (ELPs) are polypentapeptides that undergo hydrophobic collapse and aggregation above a specific transition temperature, T_t. ELP diblocks sharing a common “core” block (I60) but varying “outer” blocks (A80, P40) were designed, where T_t,I < T_t,A < T_t,P. The formation of ~55 nm diameter mixed micelles from these ELP diblocks was verified using dynamic light scattering (DLS), multiangle light scattering (MALS) and fluorescence resonance energy transfer (FRET). To confer affinity to the blood circulating protein fibrinogen, a fibrinogen-binding tetrapeptide sequence (GPRP) was fused to A80-I60, while P40-I60 was fused to a non-binding control (GPSP). The …

Next-Peak: A Normal-Exponential Two-Peak Model For Peak-Calling In Chip-Seq Data, Nak-Kyeong Kim, Rasika V. Jayatillake, John L. Spouge

Mathematics & Statistics Faculty Publications

Background: Chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) can locate transcription factor binding sites on genomic scale. Although many models and programs are available to call peaks, none has dominated its competition in comparison studies.

Results: We propose a rigorous statistical model, the normal-exponential two-peak (NEXT-peak) model, which parallels the physical processes generating the empirical data, and which can naturally incorporate mappability information. The model therefore estimates total strength of binding (even if some binding locations do not map uniquely into a reference genome, effectively censoring them); it also assigns an error to an estimated binding location. The comparison study …

Comparing U.S. And International Medical Graduates' Treatment Of Chronic Diseases: Utilization Of Psychosocial Interventions., Susan E. Jarquin

Graduate Theses, Dissertations, and Problem Reports (ETD)

Chronic disease care places significant pressure on healthcare provider resources, often requiring the hiring of physicians trained abroad to meet these demands. International medical graduates are on trend to become the primary suppliers of chronic disease care in the U.S. Consequently, there is a need to assess how physicians trained abroad care for patients with chronic diseases. The purpose of this exploratory survey study was to determine whether international and U.S. medical graduates differ in their use of three specific psychosocial interventions when caring for patients suffering from chronic diseases. Medical residents in U.S. allopathic family medicine and internal medicine …

Preliminary Validation Of Handheld X-Ray Fluorescence (Hhxrf) Spectrometry: Distinguishing Osseous And Dental Tissue From Non-Bone Material Of Similar Chemical Composition, Heather Zimmerman

Electronic Theses and Dissertations

Forensic anthropologists normally examine bone from a variety of medicolegal contexts. The skeletal remains may in some cases be highly fragmented or taphonomically modified, making it difficult to sort bone from non-bone material. In these cases, the forensic anthropologist may rely on microscopic or destructive chemical analyses to sort the material. However, these techniques are costly and time-intensive, prompting the use of nondestructive analytical methods in distinguishing bone and teeth from non-bone materials in a limited number of cases. The proposed analytical techniques are limited in that they rely on an examination of the major elements in the material, and …

Influence Of Task-Role Mental Models On Human Interpretation Of Robot Motion Behavior, Scott Ososky

Electronic Theses and Dissertations

The transition in robotics from tools to teammates has begun. However, the benefit autonomous robots provide will be diminished if human teammates misinterpret robot behaviors. Applying mental model theory as the organizing framework for human understanding of robots, the current empirical study examined the influence of task-role mental models of robots on the interpretation of robot motion behaviors, and the resulting impact on subjective ratings of robots. Observers (N = 120) were exposed to robot behaviors that were either congruent or incongruent with their task-role mental model, by experimental manipulation of preparatory robot task-role information to influence mental models (i.e., …