Digital Commons Network^™

The Importance Of Bioacoustics For Dolphin Welfare: Soundscape Characterization With Implications For Management, Heather Ruth Spence

Dissertations, Theses, and Capstone Projects

Sound is the primary sensory modality for dolphins, yet policies mitigating anthropogenic sound exposure are limited in wild populations and even fewer noise policies or guidelines have been developed for governing dolphin welfare under human care. Concerns have been raised that dolphins under human care live in facilities that are too noisy, or are too acoustically sterile. However, these claims have not been evaluated to characterize facility soundscapes, and further, how they compare to wild soundscapes. The soundscape of a wild dolphin habitat off the coast of Quintana, Roo, Mexico was characterized based on Passive Acoustic Monitoring (PAM) recordings over …

Matrix Stiffness Regulates Glial Cell Morphology And Differentiation, Mateusz M. Urbanski

Dissertations, Theses, and Capstone Projects

Studies from our laboratory have shown that inhibition of non-muscle myosin II (NMII) activity has opposite effects on the formation of myelin by oligodendrocytes (OL), the myelinating glia of the central nervous system (CNS) and Schwann cells (SC), which perform the same function in the peripheral nervous system (PNS). The decrease of NMII activity in SC impairs their ability to establish polarity and myelinate, while its inhibition in OL enhances process branching and increases the amount of myelin formed in vitro an in vivo. A growing number of studies have shown that NMII also plays a role in the ability …

Characterizing Migratory Signaling Pathways Of Transplantable Retinal Progenitor Cells And Photoreceptor Precursor Cells Toward Restoration Of Degenerative Retina ' A Systems Biology Approach, Uchenna John Unachukwu

Dissertations, Theses, and Capstone Projects

A common feature of several heterogeneous diseases that result in retinal degeneration (RD) is photoreceptor loss, leading to an irreversible decline in visual function [15-17]. There are no cell replacement treatments available for RD diseases such as age-related macular degeneration (AMD) and retinitis pigmentosa (RP). Although many RD cases are of a genetic origin, a promising strategy to treat diseased phenotypes is by replacing lost photoreceptor cells, for synaptic integration and restoration of visual function. To advance photoreceptor-replacement strategies as a practical therapy, in light of highly restricted integration rates reported across studies, this body of research focused on defining …

Molecular-Genetic And Behavioral Analysis Of The Functionality Of Patterning In The Trigeminal Neuraxis, Dana Bakalar

Dissertations, Theses, and Capstone Projects

A striking feature of the vibrissal representation in rodents is the presence; at brainstem (barrellettes), thalamic (barrelloids) and cortical levels (barrels) of a somatotopically organized pattern of neurons which is isomorphic, both morphologically and physiologically, to the pattern of vibrissae on the snout. The vibrissal system is required for several classes of behavior, including feeding and active vibrissal sensing, but the functional role of the patterning in these behaviors is unknown. We used two mutant animals lacking patterning in two areas of the vibrissal neuraxis to examine the functional role of patterning. We examined feeding behavior using a knockout of …

Mechanisms Of Vocal Coordination In Zebra Finches, Jonathan I. Benichov

Dissertations, Theses, and Capstone Projects

Social animals frequently emit communication calls. Although these calls are often innate in their acoustic structure, they can be used adaptably to coordinate behavior with other individuals. It is not known, however, what each animal needs to learn in order to achieve and maintain synchronized call patterns with others. To study this process, we have developed a vocal robot that can be programed to generate call patterns or to sense a bird's contact (short) calls and respond with precisely timed call answers. By varying the robot's vocal behavior, including call timing and rhythm, we tested how interacting zebra finches adapt …

The Audiometric Profile Of Young Adults Who Report Difficulty With Speech Perception In Noise, Michael R. Higgins

Dissertations, Theses, and Capstone Projects

This study examined speech perception abilities in young adults (18-24 years) who reported having difficulty perceiving speech in the presence of background noise despite clinically-normal hearing. The purpose of this study was to compare the audiometric profile of young adults with and without perceived difficulty with speech perception in noise. The Speech, Spatial and Qualities of Hearing Scale (SSQ) was administered to obtain a measure of how participants rate their speech perception in noise under different listening conditions. Audiometric tests included standard audiometric thresholds (250-8000 Hz), high frequency pure tone thresholds (9000-12,500 Hz), QuickSIN, distortion product otoacoustic emissions (DPOAEs), and …

Maternal Dissociation, Emotional Acceptance And Child Emotion Regulation: A Study Of Residents In A Family Homeless Shelter For Victims Of Domestic Violence, Brian S. Mueller

Dissertations, Theses, and Capstone Projects

The present study examined the relationships between maternal dissociation, mothers' self-described parenting behaviors in child emotion regulation, and the emotion regulatory capacity of their children. These relationships were investigated in a sample of predominately low-income African-American and Latino mothers and children residing in a domestic violence shelter. In this study, I investigated a mediational model relating maternal dissociation, mother's acceptance of child emotions, and child difficulties in emotion regulation and behavior. I predicted that mothers who reported more dissociative experiences would demonstrate less awareness and acceptance of emotions when they responded to children's sadness, fear, happiness, and anger. I also …

Depth-Resolved Multispectral Sub-Surface Imaging Using Multifunctional Upconversion Phosphors With Paramagnetic Properties, Zaven Ovanesyan, L. Christopher Mimun, Gangadharan Ajith Kumar, Brian G. Yust, Chamath Dannongoda, Karen S. Martirosyan, Dhiraj K. Sardar

Physics & Astronomy Faculty Publications

Molecular imaging is very promising technique used for surgical guidance, which requires advancements related to properties of imaging agents and subsequent data retrieval methods from measured multispectral images. In this article, an upconversion material is introduced for subsurface near-infrared imaging and for the depth recovery of the material embedded below the biological tissue. The results confirm significant correlation between the analytical depth estimate of the material under the tissue and the measured ratio of emitted light from the material at two different wavelengths. Experiments with biological tissue samples demonstrate depth resolved imaging using the rare earth doped multifunctional phosphors. In …

Why Robots Should Be Social: Enhancing Machine Learning Through Social Human-Robot Interaction, Greeff J De, T Belpaeme

School of Engineering, Computing and Mathematics

No abstract provided.

Using Fish Population Metrics To Compare The Effects Of Artificial Reef Density, Catheline Y. M. Froehlich, Richard Kline

School of Earth, Environmental, & Marine Sciences Faculty Publications

Artificial reefs continue to be added as habitat throughout the world, yet questions remain about how reef design affects fish diversity and abundance. In the present study, the effects of reef density were assessed for fish communities and sizes of economically valuable Lutjanus campechanus 13 km off Port Mansfield, Texas, at a reef composed of more than 4000 concrete culverts. The study spanned from May to June in 2013 and 2014, and sites sampled included natural reefs, bare areas, and varying culvert patch density categories, ranging from 1–190 culverts. Abundances of adults and species evenness of juvenile populations differed between …

Two Blocks From Heaven, David M. Tan

Theses

Two Blocks From Heaven is a story set in the realm of human trafficking. The story follows Chen, a young Chinese prostitute in an illegal brothel above a Chinese restaurant nearby a church in the middle of an unspecified American city. Jaded, abused, and weary of this life she’s been forced to live, she takes on a deal to train the new girl, Mei, in exchange for her own freedom. Upon Mei’s arrival and befriending, Chen is faced with a choice: earn her freedom at the cost of Mei ending up like her or risk their safety by running away. …

S.P.U.R., Amanda Fleming

Kaleidoscope

No abstract provided.

On The Coexistence Of Freedom And Necessity, George Younger

Kaleidoscope

No abstract provided.

Revamping The Roles Of Women In Vampire Film Or Women Who Suck The Life Out Of You, Christy Freadreacea

Kaleidoscope

No abstract provided.

Food Labeling And The Consumer's Right To Know: Give The People What They Want, David Alan Nauheim

Liberty University Law Review

No abstract provided.

Has Evolution Disproved God?: The Fallacies In The Apparent Triumph Of Soft Science, Tim Newton

Liberty University Law Review

No abstract provided.

Educational Pathways To Remote Employment In Isolated Communities, David C. Denkenberger, Julia Way, Joshua M. Pearce

Department of Materials Science and Engineering Publications

Those who live in isolated communities often lack reliable, skilled employment opportunities, which fundamentally undermines their human security. For individuals who wish to remain in their isolated communities for family, religious, philosophical or other reasons, their attachment to their communities creates a disincentive for higher education. This promotes low educational achievement, which in turn results in low socioeconomic status, lack of social mobility, and a generational cycle of poverty. The human misery that results from such a feedback loop is observed in isolated communities throughout North America, including aboriginal communities in Canada. Fortunately, maturation of information and communication technologies now …

Reproductive Constraints Influence Habitat Accessibility, Segregation, And Preference Of Sympatric Albatross Species, Michelle Kappes, Scott Shaffer, Yann Tremblay, David Foley, Daniel Palacios, Steven Bograd, Daniel Costa

Faculty Publications, Biological Sciences

The spatiotemporal distribution of animals is dependent on a suite of factors, including the distribution of resources, interactions within and between species, physiological limitations, and requirements for reproduction, dispersal, or migration. During breeding, reproductive constraints play a major role in the distribution and behavior of central place foragers, such as pelagic seabirds. We examined the foraging behavior and marine habitat selection of Laysan (Phoebastria immutabilis) and black-footed (P. nigripes) albatrosses throughout their eight month breeding cycle at Tern Island, Northwest Hawaiian Islands to evaluate how variable constraints of breeding influenced habitat availability and foraging decisions. We used satellite tracking and …

Wild-But-Not-Too-Wild Animals: Challenging Goldilocks Standards In Rewilding, Erica Von Essen, Michael P. Allen

Between the Species

Rewilding is positioned as ‘post’-conservation through its emphasis on unleashing the autonomy of natural processes. In this paper, we argue that the autonomy of nature rhetoric in rewilding is challenged by human interventions. Instead of joining critique toward the ‘managed wilderness’ approach of rewilding, however, we examine the injustices this entails for keystone species. Reintroduction case studies demonstrate how arbitrary standards for wildness are imposed on these animals as they do their assigned duty to rehabilitate ecosystems. These ‘Goldilocks’ standards are predicated on aesthetic values that sanction interventions inconsistent with the premise of animal sovereignty. These include culling, relocations and …

Toward A More Ecologically Informed View Of Severe Forest Fires, Richard L. Hutto, Robert E. Keane, Rosemary L. Sherriff, Christopher T. Rota, Lisa A. Eby, Victoria A. Saab

Biological Sciences Faculty Publications

We use the historical presence of high-severity fire patches in mixed-conifer forests of the western United States to make several points that we hope will encourage development of a more ecologically informed view of severe wildland fire effects. First, many plant and animal species use, and have sometimes evolved to depend on, severely burned forest conditions for their persistence. Second, evidence from fire history studies also suggests that a complex mosaic of severely burned conifer patches was common historically in the West. Third, to maintain ecological integrity in forests born of mixed-severity fire, land managers will have to accept some …

The Legacy, September 29, 2015, Lindenwood University

The Legacy (2007-2018)

Student Newspaper of Lindenwood University

Dna Methylation Dynamics Of Germinal Center B Cells Are Mediated By Aid, Pilar M. Dominguez, Matt Teater, Nyasha Chambwe, Matthias Kormaksson, David Redmon, Jennifer Ishii, Bao Vuong, Jayanta Chaudhuri, Ari Melnick, Aparna Vasanthakumar, Lucy A. Godley, F. Nina Papavasiliou, Oliver Elemento, Rita Shaknovich

Publications and Research

Changes in DNA methylation are required for the formation of germinal centers (GCs), but the mechanisms of such changes are poorly understood. Activation-induced cytidine deaminase (AID) has been recently implicated in DNA demethylation through its deaminase activity coupled with DNA repair. We investigated the epigenetic function of AID in vivo in germinal center B cells (GCBs) isolated from wild-type (WT) and AID-deficient (Aicda^−/−) mice. We determined that the transit of B cells through the GC is associated with marked locus-specific loss of methylation and increased methylation diversity, both of which are lost in Aicda^−/− animals. Differentially …

Hola From Costa Rica!, Mackenzie Fraser

2015-16 Postcards

Postcard from Mackenzie Fraser, during the Linfield College Semester Abroad Program at Centro Cultural e Histórico José Figueres Ferrer in San Ramón, Costa Rica

Religion And Ethical Attitudes Toward Accepting A Bribe: A Comparative Study, Robert W. Mcgee, Serkan Benk, Bahad?R Yüzba??

College of Business and Economics

This study presents the results of an empirical study of ethical attitudes toward bribe taking in six religions—Christianity, Islam, Buddhism, the Baha’i faith, Hinduism, and Judaism. The paper begins with a discussion of the theoretical and empirical literature on the subject. The empirical part of the study examines attitudes toward accepting bribes in 57 countries from the perspectives of six religions using the data from Wave 6 (2010–2014) of the World Values Survey. The sample population is more than 52,000. More than a dozen demographic variables were examined. The study found that attitude toward bribe taking does differ by religion.

Isabella Tanikumi V. Walt Disney Co

2015 Decisions

USDC for the District of New Jersey

The Current Volume 26 : Issue 6, Nova Southeastern University

Student Newspapers

No abstract provided.

Silver Nanoparticles Induce Tight Junction Disruption And Astrocyte Neurotoxicity In A Rat Blood-Brain Barrier Primary Triple Coculture Model, Liming Xu, Mo Dan, Anliang Shao, Xiang Cheng, Cuiping Zhang, Robert A. Yokel, Taro Takemura, Nobutaka Hanagata, Masami Niwa, Daisuke Watanabe

Pharmaceutical Sciences Faculty Publications

BACKGROUND: Silver nanoparticles (Ag-NPs) can enter the brain and induce neurotoxicity. However, the toxicity of Ag-NPs on the blood-brain barrier (BBB) and the underlying mechanism(s) of action on the BBB and the brain are not well understood.

METHOD: To investigate Ag-NP suspension (Ag-NPS)-induced toxicity, a triple coculture BBB model of rat brain microvascular endothelial cells, pericytes, and astrocytes was established. The BBB permeability and tight junction protein expression in response to Ag-NPS, NP-released Ag ions, and polystyrene-NP exposure were investigated. Ultrastructural changes of the microvascular endothelial cells, pericytes, and astrocytes were observed using transmission electron microscopy (TEM). Global gene expression …

Genetic Models For The Study Of Luteinizing Hormone Receptor Function, Prema Narayan

Articles

The luteinizing hormone/chorionic gonadotropin receptor (LHCGR) is essential for fertility in men and women. LHCGR binds luteinizing hormone (LH) as well as the highly homologous chorionic gonadotropin. Signaling from LHCGR is required for steroidogenesis and gametogenesis in males and females and for sexual differentiation in the male. The importance of LHCGR in reproductive physiology is underscored by the large number of naturally occurring inactivating and activating mutations in the receptor that result in reproductive disorders. Consequently, several genetically modified mouse models have been developed for the study of LHCGR function. They include targeted deletion of LH and LHCGR that mimic …

September 29, 2015 Ereporter, University Of Alabama At Birmingham

eReporter (campus newsletter)

No abstract provided.

A Phantom Road Experiment Reveals Traffic Noise Is An Invisible Source Of Habitat Degradation, Heidi E. Ware, Christopher J.W. Mcclure, Jay D. Carlisle, Jesse R. Barber

Biology Faculty Publications and Presentations

Decades of research demonstrate that roads impact wildlife and suggest traffic noise as a primary cause of population declines near roads. We created a “phantom road” using an array of speakers to apply traffic noise to a roadless landscape, directly testing the effect of noise alone on an entire songbird community during autumn migration. Thirty-one percent of the bird community avoided the phantom road. For individuals that stayed despite the noise, overall body condition decreased by a full SD and some species showed a change in ability to gain body condition when exposed to traffic noise during migratory stopover. We …