Digital Commons Network^™

Barry Conservation Camp Health Form, Andy Schafermeyer

UNH Cooperative Extension

No abstract provided.

Combining Alaska Forage Fish Data From Research Surveys And Predator Diets To Assess Forage Fish Response To Climatic Regime Shifts, Lindsay Turner

Fisheries

Forage fish play a crucial role in the marine ecosystems of Alaska through the transfer of energy from lower trophic levels to marine predators. Understanding and quantifying Alaskan forage fish responses to rapid climatic shifts is needed to inform adaptive management strategies under a warmer and more variable future in Alaska. However, data on the occurrence and abundance of forage fish in Alaska are limited due to the diversity of life history strategies and patchy distribution that make their capture in fisheries-independent surveys difficult. In this thesis, I address current gaps in the data available on forage fish through the …

Salmon, Stewardship, And Indigenous Livelihoods: Bridging Knowledge Systems And Reshaping Research Relationality In The Kuskokwim Region Of Southwestern Alaska, Janessa Esquible

Fisheries

This dissertation research is situated in southwestern Alaska, in the communities of Kongiganak, Quinhagak, Bethel, Aniak, and McGrath, spanning the Kuskokwim Bay and Kuskokwim River, and with Alaska Native Peoples (primarily Yup'ik and Athabascan fishing families) who have been salmon peoples and stewards of their ancestral homelands since time immemorial. This Indigenous-led project documented historical and current ways in which Yup'ik and Athabascan Peoples have served as salmon stewards, and the values and governance mechanisms pertaining to salmon stewardship. We utilized a participatory approach by involving Tribal governments, communities, and Indigenous local youth in all aspects of our research. We …

Evaluation Of An Artificial Intelligence-Based Intraocular Lens Calculator: Ai-Based Iol-Optimized Formula, Li Wang, Hendrik Burwinkel, Nicolas Bensaid, Douglas D Koch

Faculty, Staff and Students Publications

Purpose: To evaluate the ZEISS AI IOL Calculator (ZEISS AI) and compare its accuracy in refractive prediction to the Barrett Universal II (BUII) and Kane formulas.

Setting: Cullen Eye Institute, Baylor College of Medicine, Houston, TX.

Design: Retrospective case series.

Methods: The ZEISS AI IOL Calculator (ZEISS AI) is an artificial intelligence (AI) based IOL-optimized formula. The refractive prediction errors (PEs) were calculated in the entire dataset and subgroups of short eyes (axial length (AL) ≤ 22.5 mm) and long eyes (AL ≥ 25.0 mm). The standard deviation (SD), root-mean-square absolute error (RMSAE), mean absolute error (MAE), median absolute error …

Maresin-Like 1 Ameliorates Neuropathology Of Alzheimer's Disease In Brains Of A Transgenic Mouse Model, Pallavi Shrivastava, Yan Lu, Shanchun Su, Yuichi Kobayashi, Yuhai Zhao, Nathan Lien, Abdul-Razak Masoud, Walter J. Lukiw, Song Hong

School of Medicine Faculty Publications

(1) Background: Impeded resolution of inflammation contributes substantially to the pathogenesis of Alzheimer's disease (AD); consequently, resolving inflammation is pivotal to the amelioration of AD pathology. This can potentially be achieved by the treatment with specialized pro-resolving lipid mediators (SPMs), which should resolve neuroinflammation in brains. (2) Methods: Here, we report the histological effects of long-term treatment with an SPM, maresin-like 1 (MarL1), on AD pathogenesis in a transgenic 5xFAD mouse model. (3) Results: MarL1 treatment reduced Aβ overload, curbed the loss of neurons in brains especially cholinergic neurons associated with cleaved-caspase-3-associated apoptotic degeneration, reduced microgliosis and the pro-inflammatory M1 …

Ucc Minutes 12-17-24, Angela Brock

UCC Agendas/Minutes

No abstract provided.

Pathways From Socioeconomic Factors To Major Cardiovascular Events Among Postmenopausal Veteran And Nonveteran Women: Findings From The Women's Health Initiative, Hind A Beydoun, May A Beydoun, Rebecca L Kinney, Simin Liu, Rona Yu, Matthew Allison, Robert B Wallace, Qian Xiao, Longjian Liu, Philippe Gradidge, Su Yon Jung, Hilary A Tindle, Shawna Follis, Robert Brunner, Jack Tsai

Faculty, Staff and Student Publications

BACKGROUND: Cardiovascular disease (CVD) remains a leading cause of death for women in the United States, with veterans being at potentially higher risk than their nonveteran counterparts due to accelerated aging and distinct biopsychosocial mechanisms. We examined pathways between selected indicators of socioeconomic status (SES) such as education, occupation, household income, and neighborhood SES and major CVD events through lifestyle and health characteristics among veteran and nonveteran postmenopausal women.

METHODS AND RESULTS: A total of 121 286 study-eligible WHI (Women's Health Initiative) participants (3091 veterans and 118 195 nonveterans) were prospectively followed for an average of 17 years, during which …

Acts Of Tyranny And Terror: Violence, Propaganda, And The Southern Tenant Farmers Union In 1930s Arkansas, Charles Bonet

Theses and Dissertations

The objective of this thesis project is to tell a compelling story of the violence that occurred during the early years of the Southern Tenant Farmers Union in 1930s Arkansas. The story will be told through a close examination of experiences of significant STFU figures, as well as through an examination of some key events. Special attention will be paid to the various forms of violence and intimidation that proliferated and, additionally, the ways in which propaganda often factored in. A podcast series will be the media utilized to tell this story. The podcast format allows for the project to …

Traveling Waves In Biological Population Models, Ahlam Alzahrani

Theses and Dissertations

In this thesis, we examine the existence of traveling waves in population models. We begin by exploring conditions under which traveling waves exist, even when the migration probability lacks a density function or, if the density function exists, it may be discontinuous. To address this, we impose certain conditions that ensure the monotonicity of the evolution operator, enabling the application of the Monotone Iteration Method. Next, we explore the existence of monotone traveling waves in a general class of integral-difference population models that depend on both the previous state and long-term memory, allowing for the consideration of multiple past states. …

Integrative Single-Cell Genomics And Machine Learning Methods For Tumor Microenvironment Characterization And Survival Prediction, Wenjuan Zhang

Theses and Dissertations

The tumor microenvironment (TME) comprises diverse cell types and plays crucial roles in cancer development and therapeutic response. Single-cell RNA sequencing (scRNA-seq) data quantifies gene expression at the single-cell level, enabling the dissection of heterogeneous cell populations in various biological contexts and diseases. In this work, we developed integrative single-cell genomics and machine learning approaches to characterize the TME and enhance patient survival prediction. We introduced a convolutional neural network (CNN)-based method, cnnImpute, to address the high proportion of missing data in scRNA-seq datasets. cnnImpute effectively imputes missing values while preserving the integrity of cell clusters, achieving superior performance in …

Examining Change In Burnout And Empathy Among Physician Assistant Students During The Clinical And Didactic Years, Jannelle Reynolds, Kimberly Gomes, Nicole M. Sleddens, Jana L. Wardian Phd

Innovations in Health Sciences Education Journal

Few studies investigate how burnout affects physician assistant's student empathy. This study aimed to determine the degree of burnout and empathy in didactic PA students as compared to burnout and empathy in their clinical year.

Methods: One cohort of PA students at a Midwestern university were surveyed twice during their education. Once during didactic and once during the clinical year. Two surveys were used to assess burnout and empathy.

Results: Our findings showed moderate to high levels of emotional exhaustion and depersonalization at the end of the didactic phase and significant improvement in lack of personal achievement and emotional exhaustion …

Organizational Leadership Strategies For Growing Membership In A Start-Up Online Business, Pascale Rheault

Walden Dissertations and Doctoral Studies

Leaders of small- and medium-sized enterprises (SMEs) play a critical role in driving the global economy; however, online start-ups often face high failure rates within their first year. Some start-up leaders fail to implement effective promotional strategies, hindering their ability to succeed in a competitive market. Grounded in the Baldrige performance excellence framework, the purpose of this qualitative single case study was to explore effective strategies business leaders use to grow membership in an online start-up business. The participants were two senior leaders in the Toronto region’s start-up sector. Data were collected using semistructured interviews as well as a review …

Influence Of Demographics, Health, And Self-Objectification On Body Acceptance And Body Appreciation In Older Adults, Heather Russell

Walden Dissertations and Doctoral Studies

Prior research has examined the demographic, health, and activity factors influencing how young people, particularly young women, see themselves concerning body appreciation and acceptance. However, body appreciation and acceptance as perceived by older men and women have not been well-studied. The purpose of the study was to examine the extent to which gender, age, quality of life assessment of physical and mental health, physical activity, and self-objectification influence body acceptance by others and body appreciation in adults ages 55-75. Self-objectification theory (SOT) was the framework used to examine the influence of two aspects of self-objectification (lack of autonomy and invisibility) …

Staff Education To Improve Depression Management Using Mindfulness Meditation Intervention, Ndubuisi Chimezie Obioha

Walden Dissertations and Doctoral Studies

Executive Summary: Staff Education Project Staff Education to Improve Depression Management Using Mindfulness Meditation Intervention by Ndubuisi Obioha MSN, Walden University, 2021 BSN, Grand Canyon University, 2017 Executive Summary Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Nursing Practice Walden University November 2024 Summary The problem of poor depression management guided this quality improvement staff educational project due to treatment nonadherence issues. The providers at the project site had minimal knowledge of self-help interventions that can be used to assist individuals with depression who often face treatment barriers. Failing to address the problem could result …

Attachment-Based Intervention For Inattention, Hyperactivity, And Impulsivity: Does Relationship Matter?, Stephanie M. Ess

Walden Dissertations and Doctoral Studies

While the prevailing notion attributes attention deficit hyperactivity disorder (ADHD) largely to a genetic response, there is increasing evidence of its multifactorial nature, involving both genetic and environmental factors, including the parent–child attachment relationship. Given the limitations of pharmacological and behavioral treatment methods, this study addressed the critical need for alternative ADHD interventions. The purpose of this study was to examine the differences in inattention, hyperactivity, and impulsivity among toddlers approximately 48 months old in an attachment-based intervention group (n = 63), a control intervention group (n = 58), and a low-risk group not requiring intervention (n = 52). Grounded …

Effective Transformational Leadership Strategies For Catalyzing Employee Morale For Innovation Within Fashion Boutiques, Jasmine Shanise Glover

Walden Dissertations and Doctoral Studies

Business owners risk failure when they lack effective strategies for innovation and employee morale. In the fashion industry, many leaders have been forced to close their brick-and-mortar stores due to inadequate innovation and leadership strategies, which hindered their ability to adapt and thrive. The purpose of this qualitative pragmatic inquiry study was to explore and identify the strategies that fashion industry leaders use to improve employee morale, foster innovation, and drive business success. The participants consisted of seven fashion boutique leaders from the United States, each of whom managed either an active online boutique or a brick-and-mortar store. Data were …

Organizational Leadership Strategies For Growing Membership In A Start-Up Online Business, Pascale Rheault

Walden Dissertations and Doctoral Studies

Leaders of small- and medium-sized enterprises (SMEs) play a critical role in driving the global economy; however, online start-ups often face high failure rates within their first year. Some start-up leaders fail to implement effective promotional strategies, hindering their ability to succeed in a competitive market. Grounded in the Baldrige performance excellence framework, the purpose of this qualitative single case study was to explore effective strategies business leaders use to grow membership in an online start-up business. The participants were two senior leaders in the Toronto region’s start-up sector. Data were collected using semistructured interviews as well as a review …

Exploring Effective Employee Engagement Strategies During Times Of Crisis In Small Social Assistance Nonprofits, Andrea Purnell

Walden Dissertations and Doctoral Studies

Engaging employees during crises is an important issue in the nonprofit sector, where resource limitations constrain leaders’ options. Leaders of small assistance nonprofits are often concerned that disengaged employees may negatively affect productivity and organizational performance. Guided by the transformational leadership theory, the purpose of this qualitative pragmatic inquiry project was to explore effective strategies used by leaders of small social assistance nonprofits in Northern California to enhance employee engagement during crisis situations. The participants consisted of eight chief officers and executive directors from small social assistance nonprofits in Northern California, all of whom had developed effective strategies to mitigate …

Pleural Empyema: Etiology And Pathogenesis, Daniel M Musher, Sherwood Gorbach, Joshua Fierer

Faculty, Staff and Students Publications

No abstract provided.

Unveiling Soil Microbial Communities And Resistomes In Northern Alaska National Wildlife Refuges, Bevyn Amber Cover

Biological Sciences

Microbial communities residing in pristine high-latitude soils play a critical role in ecosystem function, but also harbor potential threats such as acting as reservoirs of antimicrobial resistance (AMR) genes. Current knowledge about these microbial communities and the resistance genes they carry presents limits to the ability to predict how these ecosystems will respond to climate change. This knowledge gap is particularly concerning in light of the potential public health threat posed by antimicrobial resistance harbored within these communities as antibiotic-resistant human infections continue to increase. This study investigated the microbial communities and details the antimicrobial resistance gene reservoirs in previously …

Effects Of Juvenile Mass On Reproduction And Calf Survival In A Low-Density Moose Population, Sara R. Henslee

Biological Sciences

Moose (Alces alces) are a valuable big game species in Alaska and serve as a critical food source for residents. Near Nome, Alaska, the local moose population has remained at low densities for decades, and there is strong public interest in investigating the cause behind the population's failure to increase in abundance. Compared to other moose populations in Alaska, the population of moose near Nome does not appear to be nutritionally limited or close to carrying capacity. I sought to explore how juvenile mass, a widely used metric to assess moose nutritional status in Alaska, influences reproductive output and subsequent …

A Range Extension For Carex Sartwellii In Interior Alaska, Mark A. Winterstein

Biological Sciences

Mean annual temperatures and growing season length have been increasing in northern latitudes. This has impacted permafrost thaw and the water balance of northern regions, resulting in a pattern of drying lakes in the Yukon Flats, Alaska. As lakes dry, they expose lake sediments to colonization by terrestrial vegetation. Recent interest in the terrestrial response to climate change and its effects on ecosystem services led to the formation of the Yukon River Basin project. As a part of this project, we studied plant succession and diversity in the drying lake basins. In the course of our field work we encountered …

Uab Sculpture Professor Honored With Secac Award Of Artistic Excellence, Shannon Thomason

Browse All News

No abstract provided.

The Effect Of Thidiazuron Treatment On The Growth Of Vanda Limbata Blume In Vivo, Novika Ditasya Putri, Nintya Setiari, Yulita Nurchayati, Sri Widodo Agung Suedy

Makara Journal of Science

Vanda limbata is one of the most popular ornamental orchids. Currently, its growth is slow, making it necessary to improve its cultivation techniques. One of the possible ways to achieve this is to use plant growth regulator (PGR) treatment. Thidiazuron (TDZ) is a cytokinin used to increase the growth of V. limbata. This study aimed to determine the effect of TDZ concentration on the growth rate of V. limbata. The study involved cultivating V. limbata on planting media and spraying it with TDZ at various concentrations. This research uses a CRD (Completely Randomized Design) single-factor, which is TDZ concentration at …

Phytoplankton As A Bioindicator For Evaluation Of The Irrigation Water Quality Near A Metal-Coating Factory, Mimatun Nasihah, Ardyati Ardyati, Dian Siswanto, Catur Retnaningdyah

Makara Journal of Science

The irrigation water quality in Plosowahyu village, Lamongan District, Indonesia, has declined because of industrial waste disposal in irrigation canals. Specifically, waste from a metal-coating factory considerably threatens the aquatic ecosystem. To assess the impact, we evaluated water quality on the basis of phytoplankton diversity and various phys-icochemical parameters. We collected water and phytoplankton samples from four locations in Plosowahyu village: before the wastewater treatment plant (WWTP) outlet of the metal-coating factory, at this outlet, and from two sites in Wahyu River, with three repetitions at each site. The study measured several physicochemical parameters, including total dissolved solids (TDS), total …

Mnsod Gene Knockout Promotes Apoptosis In Triple-Negative Breast Cancer Bt-549 Cells Through Survivin Inhibition And Caspase-3 And Caspase-9 Modulation, Niken Rahmah Ghanny, Septelia Inawati Wanandi, Sekar Arumsari, Rafika Indah Paramita, Resda Akhra Syahrani, Putu Indah Paramita Adi Putri

Makara Journal of Science

Triple-negative breast cancer (TNBC) is the most aggressive breast cancer subtype characterized by the lack of estro-gen, progesterone, and human epidermal growth factor receptor 2 (HER2) receptors. TNBC cells are becoming more aggressive due to the high expression of manganese superoxide dismutase (MnSOD) antioxidants to suppress reactive oxygen species-induced apoptosis and promote oncogenic signaling. This study was aimed to evaluate the effects of MnSOD knockout (KO) on TNBC cell apoptosis by assessing the survivin, caspase-9, and caspase-3 expressions. BT-549 TNBC cells containing the clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9-edited MnSOD gene were used to evaluate the messenger RNA (mRNA) …

Modeling Rate Of Penetration In A South Texas Oil Field With Aggregated Well Data In A Supercomputing Framework, Timothy B. Golden

Engineering

The objective of this work is to develop an accurate and practical tool for drilling engineers supporting operations to predict rate of penetration (ROP) in the tangent section of the wellbore using easily obtainable data. Historically, tacit knowledge has been used to predict both ROP and the ideal parameters. Such a tool is valuable for planners seeking to adjust rig schedules. Further, this tool could easily be modified to also optimize parameters. This work was comprised of two major efforts: data acquisition and wrangling, and modeling. Data was obtained from three distinct sources: well files, drilling logs, and survey logs. …

Seismic Site Response, Liquefaction-Induced Lateral Spreading And Impact Of Seasonal Frost On Pile Foundations In Cold Regions, Yue Zhao

Engineering

Permafrost sites are experiencing significant changes due to anthropogenic activities and climate change, leading to substantial variations in soil dynamic properties and increased seismic risks. The associated geohazards, including differential settlement, slope instability, and liquefaction of degraded, unconsolidated materials in seismically active warm permafrost regions, pose substantial threats to the built infrastructure. This study aims to assess the seismic site response of warm permafrost sites and analyze the impact of seasonal frost on liquefaction-induced lateral spreading and pile foundation behavior in cold regions. Northway Airport, Alaska, was used as the study site to characterize permafrost conditions, while the Slana River …

Ethnic Group Affiliation And Perceptions Of Ethnic Russians In Lithuania, Morgan Lindsay Hassell

Theses and Dissertations

There are many factors that influence language acquisition and use, particularly in multilingual environments. The ethnic group affiliation (EGA) of speakers, or the degree to which a speaker identifies with their native language or culture, has been shown to have a significant impact on language use (Gatbonton, Trofimovich & Segalowitz 2009, Zabrodskaja 2015). EGA can also impact the judgments of and attitudes toward these speakers by others (e.g., Trofimovich & Turuševa 2020). Lithuania is a multilingual state with a complex political and linguistic history, particularly in relation to the Russian language and people. In this study, 150 native Lithuanians and …

Developing A New Liquefaction Ejecta Prediction Model Considering Soil Properties Of Non-Liquifiable Surface Layers Using New Large Database From The 2012 Emilia Romagna, Italy Earthquakes, Jonah Bradley Dundas

Theses and Dissertations

The presence of a non-liquefied crust overlying a liquefied layer has been found to have a significant effect on sand ejecta and surficial liquefaction damage, as observed by Ishihara (1985). Following the 2010-2011 Canterbury seismic sequence in New Zealand, almost no foundation deformation occurred in areas with liquefaction susceptible soils overlain by at least a 3 meter thick crust [1]. In contrast, the 2012 Emilia-Romagna earthquake in Italy provided surface evidence of liquefaction despite 6+ meter thick crusts. Several researchers have proposed liquefaction prediction models [e.g. LPI [2], Ishihara Curves [3], LSN [4], LPIISH [5] and the methods proposed by …