Digital Commons Network^™

Spatial And Trophic Niche Specialization In Castor Canadensis, Robert Antonio Francis

Theses and Dissertations

The Hutchinsonian niche is the n dimensional hyper volume that allows for the persistence of a species. Castor canadensis, a large semi-aquatic rodent, is an ecosystem engineer and often a keystone species for many ecosystems. I examined the effect of multiple spatial scales on hierarchical habitat selection byC. canadensis using presence-only modeling techniques. I also determined individual trophic niche specialization in C. canadensis utilizing stable isotope analysis. I concluded that C. canadensis displayed scale independent habitat selection when comparing landscape and fine spatial scales. Individual trophic niche specialization occurred in colonies of the same resource availability. Also, individual trophic niches …

Adaptive Financial Regulation And Regtech: A Concept Article On Realistic Protection For Victims Of Bank Failures, Lawrence G. Baxter

Duke Law Journal

Frustrated by the seeming inability of regulators and prosecutors to hold bank executives to account for losses inflicted by their companies before, during, and since the financial crisis of 2008, some scholars have suggested that private-attorney-general suits such as class action and shareholder derivative suits might achieve better results. While a few isolated suits might be successful in cases where there is provable fraud, such remedies are no general panacea for preventing large-scale bank-inflicted losses. Large losses are nearly always the result of unforeseeable or suddenly changing economic conditions, poor business judgment, or inadequate regulatory supervision—usually a combination of all …

The Knowledge Gap In Workplace Retirement Investing And The Role Of Professional Advisors, Jill E. Fisch, Tess Wilkinson-Ryan, Kristin Firth

Duke Law Journal

The dramatic shift from traditional pension plans to participant-directed 401(k) plans has increased the obligation of individual investors to take responsibility for their own retirement planning. With this shift comes increasing evidence that investors are making poor investment decisions.

This Article seeks to uncover the reasons for poor investment decisions. We use a simulated retirement investing task and a new financial literacy index to evaluate the role of financial literacy in retirement investment decisionmaking in a group of nonexpert participants. Our results suggest that individual employees often lack the skills necessary to support the current model of participant-directed investing. We …

Natural And Induced Mitochondrial Phosphate Carrier Loss: Differential Dependence Of Mitochondrial Metabolism And Dynamics And Cell Survival On The Extent Of Depletion., Erin L. Seifert, Aniko Gál, Michelle G. Acoba, Qipei Li, Lauren Anderson-Pullinger, Tünde Golenár, Cynthia Moffat, Neal Sondheimer, Steven M. Claypool, György Hajnóczky

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

The relevance of mitochondrial phosphate carrier (PiC), encoded by SLC25A3, in bioenergetics is well accepted. However, little is known about the mechanisms mediating the cellular impairments induced by pathological SLC25A3 variants. To this end, we investigated the pathogenicity of a novel compound heterozygous mutation in SLC25A3 First, each variant was modeled in yeast, revealing that substituting GSSAS for QIP within the fifth matrix loop is incompatible with survival on non-fermentable substrate, whereas the L200W variant is functionally neutral. Next, using skin fibroblasts from an individual expressing these variants and HeLa cells with varying degrees of PiC depletion, PiC loss of …

Chimes: December 9, 2016, Calvin College

Chimes

Alumni publish essay collection by Courtney Zonnefeld

Local churches discuss immigration by Kathryn Mae Post

Dialogue showcases vitality of student art by Daniel Hickey

Students gather for annual Christmas tree lighting by Michelle Hofman

Calvin soccer misses national championship by a silver by Purun Yeo

Calvin students enter 36-hour film contest by Juliana Ludema

CRC leaders wrestle with same-sex marriage: a look at Synod 2016 by Josh Parks

Response to Matthew Tuininga on Sexuality and Scripture by Nicholas Wolterstorff

Using The False Claims Act To Remedy Tax-Expenditure Fraud, Ian Ayres, Robert Mcguire

Duke Law Journal

The federal False Claims Act (FCA) may be a tool for combating fraudulent claims regarding tax expenditures. The FCA has been used to protect the public fisc by imposing liability upon anyone who makes a false or fraudulent claim relating to an expenditure of federal funds. A substantial share of government spending is implemented through tax credits and deductions granted to individuals and entities for taking particular actions promoted by the tax code—so-called “tax expenditures.” Funds subsidized by such tax expenditures can themselves be the objects of fraud. For example, a taxpayer could be defrauded of retirement funds that the …

To Keep Or Not To Keep…? A Look At Peripheral Ivs In The Medical-Surgical Setting, Jaime Mccabe Bsn, Rn, Jessica A. Duval Bsn, Rn

Patient Care Services / Nursing

No abstract provided.

Making Policy In The Classroom, Ulrike Hohmann

Plymouth Institute of Education

No abstract provided.

Co-Infection Dynamics Of The Tick-Borne Bacteria: Rickettsia Parkeri And "Candidatus Rickettsia Andeanae", Jung Keun Lee

Theses and Dissertations

Amblyomma maculatum Koch (Acari: Ixodidae) is the primary vector for Rickettsia parkeri which is a causative agent of American Boutonneuse fever. Infection rates of R. parkeri in A. maculatum populations from the United States are approximately 0-56%. The first human clinical case of Rickettsia parkeri infection was reported in 2014 and the patient presented with a febrile illness similar to Rocky Mountain spotted fever but showing milder clinical symptoms. Through 2016, approximately 40 human clinical cases of R. parkeri infection have been reported within southern United States. Amblyomma maculatum may also be infected with a rickettsia of unknown pathogenicity “Candidatus …

A Study Of Wheat Flour Tortillas, Combustion, Selected Gaseous And Nuclear Surrogate Samples Using Laser-Induced Breakdown Spectroscopy (Libs), Charles Tarshi Ghany

Theses and Dissertations

Laser-induced breakdown spectroscopy (LIBS) is an efficient tool for identification of elemental composition and characterization of materials. The concept of this technique is to focus a laser pulse of sufficiently high power on to a sample to create a plasma plume of atoms, ions, and molecules. The measurement of the resulting optical emission from these species provides the basis of the spectral analysis. Spectroscopic analysis of the plasma generated by Nd:YAG laser irradiation of wheat flour tortillas was carried out. A careful selection of spectral lines of Ca, Na and K which do not suffer from spectral interference was made. …

Environmental Management System Optimization Focusing On The Waste Environmental Media In The Chemical Industry, Mesha Jones

Theses and Dissertations

The first part of this project focused on evaluating aspects of the environmental management practices of Texas chemical industries, particularly waste generation and management of the data related to these processes. The waste generation data included Texas notifications required to track wastes. The next phase consisted of characterizing industrial waste disposal methods, waste container management, and transportation including an overview of required documentation for each activity. This led to identification of issues encountered from inefficient recordkeeping, ineffective internal communication, or inadequate environmental management systems. The result of an ineffective hazardous waste data management program can be fines, damage to the …

Examining Age Differences In Metamemory For Emotional Words, Samuel Ethan Flurry

Theses and Dissertations

Metamemory is “knowing about knowing” (Flavell, 1971) and is theorized as a cognitive process that monitors and controls the memory system (Flavell & Wellman, 1975; Nelson & Narens, 1990). The predominate finding in the metamemory and aging literature is that metamemory is unimpaired by aging, even when memory is impaired by aging (Eakin & Hertzog, 2006; 2012; Connor, Hertzog, & Dunlosky, 1997; Hertzog, Sinclair, & Dunlosky, 2010; Eakin, Hertzog, & Harris, 2014, but see Souchay, Moulin, Clarys, Taconnat, & Isingrini, 2007). However, a study examining metamemory for emotional words suggests older adults may show metamemory impairment when predicting memory for …

Characterization And Value-Added Utilization Of The Proteins Extracted From The By Products Of Catfish Fillet Processing Plant, Haoran Gao

Theses and Dissertations

Proteins in catfish by-products were extracted by two methods: Alkaline extraction (AE) and salt extraction (SE). Properties of the fish protein isolate (FPI) were measured by protein yield and content, moisture content, SDS-PAGE protein patterns, color and texture profile, and compared with commercial surimi products. Our results showed that catfish frame had higher protein yield and color similarity with commercial products than the head; AE-FPI had higher yield and gel strength than SE-FPI; SDS-PAGE protein patterns of FPI from catfish frame by SE method was comparable with commercial surimi products. Based on the results, further optimization of the recovery yield …

Hill-Fort Sites And Tumuli In The Shkodra Plain Region Of Northern Albania: A Geospatial Perspective, Dora Jane Lambert

Theses and Dissertations

The objective of this research was to determine the environmental and social factors that led to the shift of settlement patterning from agro-pastoral in the late Neolithic to hillort sites at the turn of the Early Bronze Age and why burial mounds (tumuli) were erected further than anticipated from corresponding hillort sites in the Shkodra Plain region in Northern Albania. Geospatial techniques were used to examine 168 tumuli and seven hillort sites. These were mapped to examine visibility, viewshed, slope, and potential prehistoric networks. Based on the landscape visibility GIS results, it was found that hillort sites and tumuli were …

Governing The Rurals: Food Security And Governance In The 21st Century, Gina Paola Rico Mendez

Theses and Dissertations

This dissertation develops a theory about the consolidation of state legitimacy given transformations in food security. Food security has moved from a national food maximization effort to the provision of food to households and individuals, regardless of the production source. This definitional change was triggered by urbanization, industrialization of agriculture and liberalization of trade. These dynamics altered the formula for balance and control of a country’s territory; as agricultural output moved into a global context, urban centers became less reliant on its periphery for sustenance and thus governments have fewer incentives to provide governance of any quality to rural areas. …

Stabilized Urea Fertilizer Effects On Corn Nitrogen Use Efficiency And Soil Nitrogen Transformations, Michael Paul Nattrass

Theses and Dissertations

Urea based fertilizers are susceptible to N losses through volatilization, denitrification, and leaching. A field and incubation experiment were conducted at Mississippi State between 2013 and 2015 to evaluate the effect of fertilizer stabilizers on grain yield, N use, and N transformations in various soil textures. Stabilizers were applied to liquid urea-ammonium-nitrate (UAN) solution (32%) and granular urea (46-0-0) at labeled rates for 179 and 112 kg N ha-1 for the field and incubation experiments, respectively. Grain yield and N content at tasseling and physiological maturity were measured for the field experiment. Extracts from the incubation experiment were measured for …

Strategies For Establishment And Low Input Forage Production Of Southeastern Wildrye, Matthew Thomas Thornton

Theses and Dissertations

Southeastern wildrye (Elymus glabriflorus (Vasey ex L.H. Dewey) Scrib & C.R. Ball) is a relatively new perennial cool-season grass that has shown potential as a forage crop in the Southeastern United States. However, there is a lack of research on this species assessing its agronomic performance. To assess the agronomic performance and it’s tolerance to imazapic field trials were established in Newton and Starkville, MS. A forage production trial included five nitrogen (N) 0, 56, 112, 168, and 224 kg N ha -1 (high input) and five annual clover (low input) treatments. Tolerance to imazapic was assessed with applications of …

Relationships Among Environmental Attitudes, Environmental Knowledge, And Outdoor Recreational Habits Of Upper Elementary School Students In Mississippi, Katherine Elizabeth Abell

Theses and Dissertations

Research sought to evaluate environmental attitudes, environmental knowledge, and nature-based recreation in Mississippi upper-elementary adolescents, as delineated by race/ethnicity and gender. Research was conducted Spring 2015 in eight study schools using three survey instruments. Analysis was conducted using one-way ANOVA, univariate analysis of variance, and generalized linear mixed models. Results found that no gender differences exist between environmental attitudes or knowledge; however, Caucasian/White students displayed significantly higher environmental knowledge and attitudes versus their African American/Black peers. Additionally, a positive relationship was detected between attitudes and knowledge of study participants. Outdoor, nature-based recreation participation varied along race/ethnicity and gender, with Caucasian/White …

Role Of Selenium In Age-Related Degeneration: Selenotranscriptome Hierarchy And Characterization Of Selenoprotein H, Lei Cao

Theses and Dissertations

Selenium (Se) is an essential trace element exerting its biological functions mainly through selenoproteins. Our lab has recently shown a paradoxical role of dietary Se at nutritional levels of intake in the delay of age-related degeneration while reducing longevity in mice carrying humanized telomeres. The first aim of this dissertation was to evaluate the effects of long-term dietary Se deficiency, aging, and sex on selenotranscriptome hierarchy in tissues. Four unique patterns in selenotranscriptomic changes were summarized. First, the responses of selenotranscriptomes to dietary Se deprivation and aging were sexually dimorphic. Second, a few selenoproteins responded to dietary Se deficiency and …

Pseudotransformational Leadership, Leadership Styles, And Emotional Intelligence: A Comparative Case Study Of Lon Nol And Pol Pot, Hok Roth

Theses and Dissertations

The purpose of this dissertation is to help explain how and why two revolutionary national leaders of Cambodia–Lon Nol and Pol Pot, particularly the latter–had spectacular failures and became pseudotransformational leaders. It aims to build a proposition or theory that revolutionary leaders in the public sector, particularly of undemocratic regimes, tend to become pseudotransformational leaders when a) they lack certain components of emotional intelligence (EI) and/or b) adopt certain leadership styles and use them inappropriately. The author used a mixed methods comparative case study with the quantitative method nested in the qualitative one. He collected empirical data from a quantitative …

Impact Of Simulated Corn Earworm Damage On Field Corn Yield And The Influence Of Chlorantraniliprole And Flubendiamide On Fall Armyworm And Agronomic Characteristics Of Field Corn, Bryan Michael Olivi

Theses and Dissertations

The introduction of pyramided Bacillus thuringinesiss (Bt) in field corn, Zea mays L. has helped reduce kernel and foliar damage from caterpillar pests including fall armyworm, Spodoptera frugiperda (J.E. Smith) and corn earworm, Helicoverpa zea (Boddie). These pests can also be controlled with diamide insecticides. No compensation for manual kernel damage occurred at any section of the ear for Bt or Non-Bt corn. No consistent impacts on corn growth or yield were observed following foliar applications of diamide insecticides at various growth stages. The diamides exhibit longer residual efficacy than other insecticides available for fall armyworm management in field corn. …

American White Pelicans Hand Raised Until Fledging And Examination Of The Trematode Infection Bolbophorus Damnificus In These Birds, Treena Lee Ferguson

Theses and Dissertations

Because little is known about juvenile American White Pelicans (Pelecanus erythrorhynchos) this study was conducted to gather more information on disease, general ecology and growth of American White Pelicans from hatching to fledging. In July 2011, American White Pelican regurgitate samples from North and South Dakota sub-colonies were collected/analyzed in preparation for a captive trial. Nutrient content compared between the colonies was found to be significantly different. Concentrations of Immunoglobulin Y and A in regurgitate samples were significantly different between colonies. A captive trial began 29 May 2012 and ended 30 July 2012, in which 16 American White Pelicans were …

The Effects Of Sub-Lethal Chlorine Induced Oxidative Stress On Biofilm Formation And Thermal Resistance Of Salmonella, Janak Dhakal

Theses and Dissertations

The effect of sub-lethal chlorine stress on various strains/serotypes of Salmonella on biofilm formation and thermal resistance was studied. The effect of oxidative stress (induced by 150 ppm of chlorine in TSB) on Salmonella biofilm formation on polystyrene and stainless steel surfaces at three temperatures (4°C, 30°C, and room temperature) in nutrient rich (full strength TSB) and nutrient limited conditions (1/10th TSB) was evaluated. On polystyrene surface, chlorine stressed S. Heidelberg (strain ID 72), S. Newport (strain ID 107) and S. Typhimurium (ATCC 14028) formed stronger (P < 0.05) biofilms at 30°C. On stainless steel, the chlorine stressed S. Heidelberg (ATCC 8326) and S. Enteritidis (ATCC 4931) at room temperature formed stronger (P < 0.05) biofilms as compared to the non-stressed control cells. The thermal resistance of short-term (1h) and long-term (27d) chlorine stressed Salmonella Heidelberg and S. Typhimurium were compared with the non-stressed controls at three different temperatures (55°C, 58°C and 61°C) and two growth phases (logarithmic and stationary). The short-term stressed log phase cells (both serotypes) were found to be more sensitive (P< 0.05) to thermal inactivation in TSB. Upon long-term sub-lethal chlorine exposure, Salmonella developed a rugose morphotype on tryptic soy agar at 37°C. The rugose morphotype provided significant thermal protection (P< 0.05) against heat stress as compared to smooth morphotype. In chicken broth, at 55°C, short-term chlorine stressed stationary phase S. Typhimurium displayed a higher D55 value compared to non-stressed cells. The findings from this research reveal that some Salmonella strains have the potential to form stronger biofilms and exhibit higher thermal tolerance upon exposure to sub-lethal chlorine concentration.

The Effects Of The Structural Components Of 4-H Residential Summer Programs On The Achievement Of The Essential Elements Of Positive Youth Development And The Acquisition Of Targeted Life Skills, Alayna Naro

Theses and Dissertations

Youth-serving organizations, such as 4-H, place a large emphasis on positive youth development and experiential learning in order to assist youth in acquiring specific life skills. The literature suggests that residential summer camps are one of the best ways to provide positive youth development, experiential learning, and targeted life skills. This study was a mixed methods design which utilized four residential summer programs throughout the state of Mississippi in order to compare the differences between the residential 4-H summer programs that took place on a university campus to those that took place within the naturalistic environment. The results of this …

Mental Illness In Starkville, Ms: A Cultural Consensus Analysis Of The Public Conceptions Of Mental Illness, Curtis Andrew Kennett

Theses and Dissertations

Mental illness is a complex phenomenon that is social and psychological as well as biological. But since the creation of the DSM-III in the 1980s, the landscape of mental health research and treatment in the United States has been heavily influenced by the biomedical model. The thoughts and beliefs of the lay public about mental illness are often ignored despite the push for greater cultural understanding among biomedical professionals. This disconnect, coupled with the poor mental health infrastructure, has left Mississippi with an inadequate ability to help Mississippians address mental illness. This research uses cognitive anthropological methods and biocultural theory …

Mexican And Central American Emigration: Exploring Recent Motivations And Challenges Of The Migrant Child Arriving To The U.S, Frank (Frank Edward) Bradford

Theses and Dissertations

This study examines several critical factors deemed to be important in examining why children from Mexico and Central America decide to take risks by traveling alone to unfamiliar places, such as the U.S., in such large numbers. An exploration of present day and historical backgrounds provide insight for social, political, and economic conditions that assist in shaping the landscape and outlook of Central Americans and Mexicans, particularly children on a daily basis.

Mississippi Sex Educators' Perceptions Of Youth Sexuality, Sarah Elizabeth Pellegrine

Theses and Dissertations

School-based sexuality education (SBSE) is an important and debated part of the sexual socialization of young people in the US. While existing literature addresses the sociological implications of SBSE at the policy and curriculum-level, little was previously known about the ways instructors carried out and made sense of sex education in their classrooms. In this study, I examine the relationship between how sex education instructors make sense of sex education and their understandings of youth and sexuality. I conducted 20 semi-structured interviews with sex education teachers in Mississippi public schools and used an inductive analysis approach to determine themes from …

Utilization Of Outdoor Resources To Enhance Understanding Of Geosciences, Sarah Radencic Lalk

Theses and Dissertations

Societal awareness and general understanding of the diversity of geosciences environments and phenomena across regions is vital. The primary method to obtain information about geosciences is through mass media. However, there is little coverage of geosciences information and the public may not trust it because of low geosciences awareness. Geosciences are rarely included as part of K-12 curricula and are optional at the collegiate level, contributing to the public deficiency regarding awareness and understanding of the geosciences. This research study investigated methods utilizing outdoor resources in an effort to increase region-specific understanding and awareness of geosciences among diverse groups. A …

Evidence Based Protocol: Improving Depression Assessments In Primary Care, Katherine E. Hoffhines

Master's Projects

Depression is a destructive condition that can have a profoundly negative impact on quality of life, wellbeing, and health (Thase, Stowell, Berry, Mencia & Blum, 2014). Worldwide, depression is the leading cause of medical disability costing the health care system over $210 billion annually (World Health Organization, 2014; Greenberg, Fournier, Sisitsky, Pike & Kessler, 2015). The World Health Organization (2016) estimates depression affects 350 million people of all ages globally. One and three adults in the U.S. will experience a major depressive episode during their lifetime (Kessler, Petukhova, Sampson, Zaslavsky & Wittchen, 2012; Rubin, Ciechanowski, Egede, Lin & Lustman, 2004). …

Patient Falls: Reducing Patient Falls With Injury, Frederick Comer

Master's Projects

The occurrence of patient falls is a very important health concern facing the healthcare industry. Many patients not only experience falls, but have falls with an injury. This is a patient safety concern that can have serious effects on patient outcomes, is a leading cause of patient injuries in hospitals, and are costly adverse events (Trepanier & Hilsenbeck, 2014). It is important that healthcare professionals determine ways to prevent what has been deemed a preventable event (Bemis-Dougherty & Delaune, 2008). In 2005 The Joint Commission (TJC) included patient falls with injury as part of their National Patient Safety Goals (Bemis-Dougherty …