Digital Commons Network^™

Studies Of Electrical Breakdown Of High-Pressure Ultra-Zero Air, Seth Miller

Electrical and Computer Engineering ETDs

High-pressure ultra-zero air is being evaluated to enhance switch performance and serve as a potential replacement for SF$_6$ in high-voltage switches, aiming to reduce reliance on costly insulating gases with supply chain and environmental concerns. There are still uncertainties about the dominant breakdown mechanisms of ultra-zero air in the high-pressure regime. The classical equations for breakdown describing Paschen curves appear to not be valid above 500 psia. In order to better understand gas breakdown in the high-pressure regime, this dissertation is evaluating the basic gas physics breakdown using both uniform and nonuniform-field electrode designs. The data has been collected to …

Understanding Juvenile Delinquency: Analyzing Familial, Social, And Psychological Risk Factors, Kasey Gagan

Dissertations, Theses, and Projects

Juvenile delinquency poses a burden for families, communities, and the criminal justice system. Criminal conduct among youth has lasting consequences on social outcomes and long-term well-being. Understanding the reasons behind these behaviors at a young age is critical to establishing effective intervention and prevention strategies. Based on the Social Learning Theory, Disorganization Theory, and the Control Theory. This thesis examines the most prominent familial, social, and psychological factors that contribute to juvenile delinquency, with a particular emphasis on how these variables increase risk for vulnerable adolescents. Integrating these theories, this study assesses how both learned behavior and a lack of …

Assessing The Transformation Of Livelihoods In Illegal Gold Mining Communities, Nurmansyah Ardikoesoema, Mahawan Karuniasa

Journal of Environmental Science and Sustainable Development

Illegal Artisanal Small-Scale Gold Mining (PETI) in Poboya, Palu City, exemplifies Indonesia’s nexus of socio-environmental vulnerability and institutional marginalization. Although environmental degradation, health impacts, and regulatory challenges associated with PETI have been extensively documented, limited research has systematically examined how the interplay of capital assets and internal motivation drives livelihood transformation pathways within PETI communities. To address this gap, this study uniquely integrates the Sustainable Livelihood Framework with spatial analysis to assess the combined influence of environmental, social, and economic capitals on PETI livelihood transitions. Using a mixed-methods approach, data were collected through quantitative survey and qualitative in-depth interviews with …

Environmental Impacts Of Land Use Change In Industrial Areas, Dwi Nowo Martono, Aruminingsih Aruminingsih

Journal of Environmental Science and Sustainable Development

Industrial development in Indonesia has been predominantly concentrated on Java Island, particularly in Karawang Regency, West Java Province. Covering an area of 175,327 hectares, Karawang has been identified as a strategic region for national food security. The Minister of Agrarian Affairs and Spatial Planning designated 95,667.45 hectares of rice fields as protected agricultural land. However, the expansion of industrial and residential areas within the regency poses a significant threat to its role as the national rice granary and to broader food security. As industrial land occupancy increases, the environmental capacity to support rice production and ensure national food security declines. …

Evaluation Of Sustainability Assessment Post Changes In The Management Of The Natural Reserve To The Natural Tourism Park In Kamojang Area, West Java, Indonesia, Purna Hindayani, Alnidi Safarach Bratanegara, Intan Adhi Perdana Putri, Zuzy Anna, Armandha Redo Pratama

Journal of Environmental Science and Sustainable Development

The area of Kamojang Nature Tourism Park, which was originally only 255 hectares, has expanded to 2,391 hectares following a changes in the Nature Reserve area. This change has raised concerns and objections from various parties, as it is considered to open opportunities for exploitation, threaten biodiversity, and potentially trigger tourism activities that may degrade the environmental quality of the areaThis study aims to analyze the sustainability status index of the Kamojang Natural Tourism Park following the status downgrade from a Nature Reserve to a Natural Tourism Park. A descriptive qualitative approach used, utilizing the Multi-dimensional Scaling model to determine …

Bibliometric And Content Analysis: Application Of The Theory Of Planned Behavior In Environmental Issues, Nofi R.A.R Samputra, Kurniawaty Iskandar, Tri Edhi Budhi Soesilo, Dwi Nowo Martono

Journal of Environmental Science and Sustainable Development

Theory of Planned Behavior (TPB) has been widely applied in environmental science as it closely linked to human behavior. This study aims to analyze research trends, identify potential future research, and propose the development of an integrative TPB model to address gaps in previous research. A total of 120 articles were selected from the Scopus database using rigorous screening criteria, including title-based selection, English-language articles, and a manual abstract review, covering publications up to April 4, 2025. Bibliometrix, VOSviewer, and MindMup were used to support keyword visualization and content interpretation. The results show that China and the United States lead …

Microbial And Ecophysiological Indices Of Agricultural Soils As Affected By Different Farming Practices In Tropical Monsoon Climate, Gulshan Ara Begum, Sajal Roy, Nasrin Chowdhury

Journal of Environmental Science and Sustainable Development

Organic farming is increasingly promoted as a sustainable alternative to conventional agriculture due to its positive effects on soil microbial dynamics, a critical component of ecosystem functioning. However, empirical comparisons of microbial responses across these systems are scarce. Therefore, we conducted a study to assess the various microbial indices of soils taken from distinct crop fields (e.g., brinjal, chilli, tomato, bean, and fallow lands) managed under both conventional and organic farming techniques. Composite soil samples from surface layer (0–15 cm) were collected in a completely random way from Bandarban upazila of Bangladesh (22°11'24.0"N 92°09'00.0"E, organic fields; 22°10'12.0"N 92°09'36.0"E, conventional fields). …

Convergence In Action: Where Environmental Science Meets Sustainable Development Practice, Herdis Herdiansyah

Journal of Environmental Science and Sustainable Development

Since the introduction of the Sustainable Development Goals (SDGs), the pursuit of human well-being through development and planetary sustainability for a better future has become a global discourse (de Jong & Vijge, 2021; Naseer et al., 2025; Arora-Jonsson, 2023). The SDGs have catalyzed interdisciplinary dialogue and strengthened global commitment (Naseer et al., 2025) by emphasizing the balance and integration of economic, social, and environmental aspects (Sedovs et al., 2025). However, the assumption that all goals can be achieved simultaneously and harmoniously seems hasty and potentially ignores the inherent tensions between ecological and …

Resilient Greenport Conceptual Model: Integrating Masterplan With Flood And Land Subsidence Disaster Management, Teuku Khamil Syamsura, Kosuke Mizuno, Supriatna Supriatna

Journal of Environmental Science and Sustainable Development

Hydrometeorological disasters, such as flooding by seawater intrusion and land subsidence from excessive water resource usage, significantly disrupt maritime traffic and port infrastructure, leading to severe economic and social consequences. This study aims to develop a conceptual model for a disaster-resilient and environmentally friendly port. The primary objective is to analyze the components of the Port Masterplan (RIP), the Greenport concept, current operational conditions, and surrounding disaster threats for develop conceptual model. A mixed-methods approach, integrating quantitative and qualitative analyses, was employed. The study examined various components of the Tanjung Priok Port Masterplan, operational data, and environmental and disaster risk …

Understanding Offline Pro-Environmental Identity: Factors And Implications, Tusyanah Tusyanah, Rahayu Puji Haryanti, Wijang Sakitri, Ismiyati Ismiyati, Nur Chayati

Journal of Environmental Science and Sustainable Development

Given global environmental challenges, developing sustainable behavior among pre-service teachers is crucial, as they will be responsible to educate future generations who must contribute to solving environmental problems. Offline pro-environmental identity refers as the individual's environmental commitment in real-life setting. Previous studies have primarily focused on online identity and behavioral intentions, while real-life behavioral context have not been fully examined. The goal of this study was to investigate the effects of the online pro-environmental identity, the perceived behavioral control, and the moral identity on the behavioral intention and the offline pro-environmental behavior. The study employed a quantitative research design and …

Techno-Economic Analysis (Tea) And Life-Cycle Assessment (Lca) Of Sustainable Aviation Fuel (Saf) Production Through Circular Economy (Ce) Practices: A Focus On Supply Chain Optimization And Policy Implications, Edmund Gyandoh

Chemical and Biological Engineering ETDs

This study provides a comprehensive systems-level evaluation of an integrated circular biorefinery for sustainable aviation fuel (SAF) production. Employing supply chain optimization, technoeconomic analysis, lifecycle analysis, policy modeling, and multicriteria decision analysis, the research assesses technical feasibility, economic viability, and environmental performance. The circular economy model demonstrates exceptional resource efficiency, achieving a 92.3% overall circularity score with strong material recycling, water reuse, waste minimization, and near-complete energy recovery, resulting in net-negative carbon emissions and net energy export. Scaling the facility to commercial capacity (500 million liters per year) enables significant economic improvements. The minimum fuel selling price (MFSP) decreases from …

Shifting From Crisis To Prevention: Community-Generated Materials From The Core Sipp Listening Sessions (Version 1), Camille Velarde, Mahtab Soleimani, Yvonnie Baik, Theresa Cruz

Reports & Documents

The Core State Injury Prevention Program (CORE SIPP) in New Mexico sought to understand how communities can prevent injury and violence before crisis occurs. In 2025, the University of New Mexico Prevention Research Center, in partnership with the New Mexico Department of Health, listened to service providers, advocates, and community leaders working with youth and families across the state. Participants described overlapping challenges, including poverty, unsafe housing, limited mental health care, transportation gaps, and a lack of safe spaces for young people, and emphasized that real prevention must start early and address families’ basic needs. From these sessions, community members …

Algebraic Multigrid Methods For Nonsymmetric And Indefinite Problems: Theory And Applications, Ahsan Ali

Mathematics & Statistics ETDs

Algebraic multigrid (AMG) is a well-established and highly efficient solver for symmetric positive definite (SPD) systems arising from elliptic and parabolic PDEs, while nonsymmetric systems from hyperbolic PDEs remain a significant challenge. This dissertation develops AMG methods and theory for nonsymmetric problems. First, we develop a novel approach combining mode constraints from energy-minimization AMG with local approximations of ideal restriction in $\ell$AIR, resulting in constrained $\ell$AIR (C$\ell$AIR), which demonstrates scalable convergence across advective and diffusive problems. Second, we extend optimal AMG theory by deriving spectral radius estimates for the two-grid error transfer operator using matrix-induced orthogonality, enabling convergence predictions for …

The Effectiveness Of Remote Patient Monitoring In Reducing The Risk Of Rehospitalizations In Covid-19 Patients: A Meta-Analysis, Dela Riadi, Indang Trihandini, Dewi Nirmala Sari, Fikri Wijaya

Kesmas

An integrated analysis of various Remote Patient Monitoring (RPM) studies is needed to evaluate the reduction rate of the risk of rehospitalization in COVID-19 patients. This meta-analysis aimed to provide an overview of the effectiveness of RPM. A literature search through online databases (PubMed, Science Direct, Scopus, ProQuest, and Embase) was conducted from 2019 to 2022. After using the Cochrane Collaboration's risk of bias tool, five studies on COVID-19 were selected. Based on the data collected from 2,685 participants (intervention = 1,060, control = 1,625), the use of RPM was found to reduce rehospitalization by 0.56 times compared to not …

Cross-Cultural Adaptation And Validation Of Ranas-Based Instrument For Measuring Latrine Use Behavior In Indonesia, Vera Yulyani, Fatwa Sari Tetra Dewi, Iswanto Iswanto

Kesmas

Using toilets is a simple way to prevent diarrhea, yet no validated tool exists to measure this habit. This study aimed to develop and validate instruments for measuring latrine use consistency. This questionnaire was adapted from the risk, attitude, norm, ability, and self-regulation (RANAS) framework developed in India and modified for Indonesia. It was evaluated by three experts using the content validity index (CVI). The face validity index (FVI) was pilot-tested on 40 community respondents. Variables measured included behavior, habits, intentions to use toilets, knowledge, attitudes, norms, abilities, and self-regulation. Question items with relevance and clarity scores of item CVI …

Sustaining Digital Health Interventions For Long-Term Cardiovascular Disease Prevention In The Energy Industry, Yul Isnadi, L. Meily Kurniawidjaja, Doni Hikmat Ramdhan

Kesmas

Cardiovascular disease (CVD) is a major health concern for energy industry workers due to occupational risks. Digital health interventions (DHIs) offer innovative strategies for CVD prevention in this high-risk group. This study aimed to explore the effectiveness and sustainability of DHI by incorporating behavior change theories, behavior change techniques, and principles of persuasive system design. A literature review was performed using PubMed, Scopus, Web of Science, and CINAHL databases to collect relevant information on interventions for CVD prevention among energy sector workers. The results indicated that while DHI could improve physical activity, dietary habits, and medication adherence in the short …

Health Economics Perspective On Indonesian Telemedicine Platform Practices: A Qualitative Study, Yossico Ria Wibowo, Rina Djunita Pasaribu

Kesmas

Telemedicine in Indonesia has experienced significant growth since its introduction in 2014. The financing system is regulated independently by each platform, leading to disparities in teleconsultation fees and medical incentives. This qualitative study, which involved a literature review and interviews with 33 participants, offered a health economics perspective on the implementation of telemedicine. The recommended teleconsultation fee ranges from USD 0.05 to USD 2.54, with medical incentives set at USD 1,59-3.18 for general practitioners and USD 4.77-6.36 for specialists, using telephone or video calls as the preferred means of teleconsultation. Although most patients and Indonesian Medical Association administrators generally agreed …

Google Review Analysis Of “Duta We Care” Excellent Service As A Featured Service At A Central General Hospital In Padang, Alfitri Alfitri, Ricvan Dana Nindrea, Adek Setiawan, Elsa Yuniarti

Kesmas

Improving healthcare service quality required both technical and interpersonal enhancements through a personalized approach, as demonstrated by the “Duta We Care” program at a Central General Hospital in Padang. This study aimed to evaluate the program’s effectiveness by analyzing patient feedback from Google Reviews. A descriptive quantitative design examined 2,035 patient reviews from March 2013 to June 2024. Using NVivo 12 software, the data analysis generated word clouds. The results showed that 68.20% of reviews received a 5-star rating, 9.48% a 4-star rating, 4.35% a 3-star rating, 2.27% a 2-star rating, and 15.70% a 1-star rating. Words like “friendly,” “professional,” …

Socioeconomic Status, Environmental Health Knowledge, And Housewives’ Behavior In Maintaining Healthy Housing At Subsidized Flats In East Jakarta, Indonesia, Alfitra Firizkia Luthfiana Dewi, Laila Fitria

Kesmas

Healthy behavior among housewives is a crucial aspect of efforts to maintain healthy housing. This study aimed to analyze the relationship of socioeconomic status (e.g., household income, level of education of family head and housewives, and family head’s occupation) and environmental health knowledge with housewives’ behavior (e.g., vector control, waste management, home ventilation, cigarette smoking, and hand sanitation hygiene) in maintaining healthy housing in the subsidized flats in East Jakarta, Indonesia. This cross-sectional study employed the two-proportion hypothesis test formula and a simple random sampling method, recruiting 137 housewives for interviews. Data were analyzed via logistic regression to determine factors …

Noncommunicable Diseases (Hypertension Or Diabetes Mellitus) Among Private University Lecturers And Related Factors, Ummi Kalsum, Melati Puti Andini, Hendra Dhermawan Sitanggang, Helmi Suryani Nasution

Kesmas

Excessive workload, lack of rest, poor diet, stress, and insufficient physical activity are some contributing factors to a high risk of noncommunicable diseases (NCDs) for lecturers. This study aimed to develop a predictive model for the risk of NCDs among lecturers at a private university in Jambi City, Indonesia. A cross-sectional design was used, and the sample included 93 lecturers who met the inclusion criteria. The independent variables were workload, rest pattern, diet, physical activity, stress, smoking, and family history. The dependent variable was NCDs (hypertension or diabetes mellitus), measured through interviews based on a doctor's diagnosis. Data analysis was …

Factors Of Anxiety Symptoms Due To Large-Scale Social Restriction Policy During The Covid-19 Pandemic In Indonesia, Indri Hapsari Susilowati, Sudibyo Alimoeso, Susiana Nugraha, Bonardo Prayogo Hasiholan, Magda Sabrina Theofany Simanjuntak, Nur Rachmat Satria

Kesmas

The Indonesian Government took some preventive measures to slow the spread of the COVID-19 virus, including social restrictions and encouraging individuals to stay at home and avoid needless gatherings. This study aimed to identify factors related to anxiety symptoms during large-scale social restrictions. This study employed a cross-sectional design using the snowball technique in an online survey. A total of 788 respondents comprised the target population to detect the smallest effect size (Cohen's dz = .2), with the level of power of 0.8 using G*Power 3.1, specifically targeting adults aged over 18 years. Out of 1,194 people who took part …

Musical Distractions: Music-Based Rhythmic Auditory Stimulation Fails To Improve Gait In Huntington's Disease, Sidney T Baudendistel, Lauren E Tueth, Allison M Haussler, Gammon M Earhart

2020-Current year OA Pubs

BACKGROUND/OBJECTIVES: Huntington's disease (HD) is a neurodegenerative disorder involving the basal ganglia and is characterized by psychiatric, cognitive, and movement dysfunction, including gait and balance impairment. Given the limited efficacy of pharmacological treatments for HD motor symptoms, nonpharmacological approaches like rhythmic auditory stimulation are being explored. This study aims to describe walking performance in people with HD during rhythmic auditory stimulation using external musical cues and internal singing cues.

METHODS: Individuals in the manifest stage of HD performed walking in four conditions: (1) comfortable pace, (2) cognitive dual task, (3) musical cue (music was played aloud), and (4) singing cue …

Assessing Effectiveness Of Runnel Restoration In New England Salt Marsh Habitats, David M. Burdick, Grant Mckown, Gregg Moore, Jenny Gibson, Wenley Ferguson, John Herbert, Nancy Pau, Susan Adamowicz, Geoff Wilson

Faculty Publications

Rising sea levels that increase flooding in salt marshes recovering from hydrologic impairments is reducing nesting habitat for salt marsh sparrows. Abandonment of colonial farming practices (1600s through 1900s) has resulted in large, waterlogged basins characterized by shallow depressions (pannes) dominated by short-form Spartina alterniflora and unvegetated megapools that are subsiding. A relatively new technique designed to provide regular tidal flooding and drainage to the waterlogged basins that have formed on the marsh is runnelling – creation of shallow hydrologic features on the marsh surface. Will runnels result in revegetation of pannes and pools with productive perennial grasses that are …

Husbandry And Management Interventions For The Conservation And Welfare Of Captive Animals – A Systematic Evidence Map, Anaelle Lemasson Lemasson

School of Biological and Marine Sciences

Zoos and aquariums are poised to play increasingly important roles in mitigating the global biodiversity crisis. However, the ultimate success of ex-situ conservation depends on animal welfare and effective husbandry and management practices. As such, an empirical understanding of ‘what works’ in zoo management is crucial for guiding success and embedding cost-effective practices. Here, we present the first systematic evidence map for husbandry and management interventions used in zoos and aquariums. We identified and extracted 1,070 articles spread across 45 journals, and examined patterns within taxonomic, spatial, temporal, and thematic categories. Studies originated from 516 institutions in 69 countries, and …

Domains Of Housing Instability And Intimate Partner Violence Risk Among U.S. Tenants, Anairany Zapata, Leila G Wood, Annalynn M Galvin, Wenyaw Chan, Timothy A Thomas, Jack Tsai, Heather K Way, Elizabeth J Mueller, Daphne C Hernandez

Faculty, Staff and Student Publications

While IPV is often studied as a predictor of housing insecurity, few U.S. studies explore how different forms of housing instability may contribute to intimate partner violence (IPV) risk. Using a mixed-methods approach and a cross-sectional design, this study examined the association between four housing instability domains and IPV among a sample of tenants that had either experienced eviction or were at high risk for eviction. Tenants in Harris and Travis counties (Texas, USA) completed an online survey (n = 1085; March–July 2024). Housing instability was assessed across four domains: homelessness, lease violations, utility hardship, and poor housing quality. …

Comparison Of Kinematic Outputs And Reliability Of Plug-In Gait Versus Conventional Gait Model 2 During Cycling, Erin Mccallister, Nicholas Russell

International Journal of Exercise Science

International Journal of Exercise Science 18(7): 712-726, 2025. Motion analysis is used to measure proper bicycle fit, avoid injury, and improve cycling performance. Small changes in position can impact joint kinematics and risk for overuse injury. Concerns regarding the often-used biomechanical model Plug-in-Gait (PIG) resulted in the creation of Conventional Gait Model 2 (CGM2). This study aims to compare kinematic outputs of these two models for cycling biomechanics plus between-day reliability of each model. Thirty-five participants participated in two experimental sessions. PiG and CGM2 marker sets were applied, and data was collected while cycling between 80-90 rpm. Model outputs were …

A Technique For Estimating The Number Of Shoots On Pole-Sized Red Pine: The Relationship Of Selected Tree Parameters To Number Of Shoots In Central Wisconsin Sand Plains Plantations, J. H. Hainze, D. M. Benjamin

The Great Lakes Entomologist

Diameter at breast height (dbh) , of ten tree parameters tested, was most highly correlated with the number of shoots per tree in six red pine plantations in the central Wisconsin sand plains. Tree height, frequently used as an estimator of shoot number in young conifers, was not highly correlated with shoot number. A strong, nonlinear correlation existed between branch diameter and number of shoots per branch. Multiple regressions using several tree parameters yielded the highest R2 values, however, dbh was judged the simplest and most practical estimator of shoot number for central Wisconsin red pine plantations.

Winter Wheat Cold Hardiness And Fructan Reserves Affected By Rhopalosiphum Padi (Homoptera: Aphididae) Feeding, S. G. Wellso, C. R. Olien, R. P. Hoxie

The Great Lakes Entomologist

The cold hardiness of 'Winoka' and 'Genesee' winter wheats was each significantly less (P = 0.05) when fed upon by bird-cherry oat aphids, Rhopalosiphum padi, than non-infested seedlings. Aphid feeding also reduced the amount of fructans in crown tissue ca. 20% compared to extracts from crowns of non-infested seedlings. It appears that the cold hardiness of these wheat cultivars may have been reduced because of fructan depletion by insect feeding.

Interspecific Interactions Between Orchelimum Nigripes And Orchelimum Volantum (Orthoptera: Tettigoniidae), Marianne Niedzlek Feaver

The Great Lakes Entomologist

[Excerpt] Interspecific interactions are relatively rare among coinhabiting Orthoptera. Most records are of overzealous males courting females not of their species or, for that matter, inanimate objects. Less frequent are reports of two signalling males interacting, yet these are of interest. Calling songs are used to distinguish species (Alexander 1956). The possibility then exists that the "interference" or, more correctly, the competition for broadcast space that occurs when two closely related species with similar songs interact, may have been influential in shaping aspects of song delivery or pattern.

A Decade-Wide View Into Medical Student Professional Identity Formation Using The Career Eulogy: Are Gen Zs Different?, William J. Crump Md, Kristin L. Wickham Md, Craig Ziegler Phd, Nicholas T. Duncan Mba, Mph

Marshall Journal of Medicine

Introduction

Students born after 1996 (Gen Z) perceive themselves as distinct from millennials. Earlier surveys described Gen Z as valuing relationships, meaningful work, financial security, and happiness. Over the past decade, medical school populations have shifted from predominantly millennial to Gen Z. This study examined changes in professional identity formation across this period, using a validated career eulogy instrument.

Methods

From 2015 to 2024, 113 medical students at a rural regional medical school completed an annual career eulogy (98% participation). Students responded to the prompt: “Imagine you are retiring from medicine. In about 50 words, what would you like to …