Digital Commons Network^™

Outsourcing, Labor Market Frictions, And Employment, Mayara Felix, Michael B. Wong

Cowles Foundation Discussion Papers

We estimate the labor market impacts of Brazil’s 1993 outsourcing legalization us-ing North-South variation in pre-legalization court permissiveness, and comparing security guards to less-affected occupations. We find that outsourcing legalization persistently reallocated jobs from older incumbent guards to younger entrants. Total employ-ment of guards and their entry from informality persistently increased, while average demographic-adjusted wages remained constant. Meanwhile, a wave of occupational layoffs displaced some incumbent guards from high-wage firms. The evidence suggests that the rise of non-core activity outsourcing reduced labor market frictions, facilitated by firm-level economies of scale in human resources and spillovers to non-adopting firms.

College Application Mistakes And The Design Of Information Policies At Scale, Tomás Larroucau, Ignacio A. Rios, Anaïs Fabre, Christopher Neilson

Cowles Foundation Discussion Papers

We examine whether large-scale information interventions can improve college application outcomes in a centralized admissions system. Using nationwide surveys from Chile, we document widespread information frictions and frequent application mistakes, such as omitting attainable preferred programs or failing to include safety options. To address these frictions, we partnered with the Ministry of Education to implement a large-scale field experiment that provided applicants with personalized information on admission probabilities and program characteristics through customized online platforms. The intervention increased the probability that previously unmatched students received an assignment by 44% and improved placement into higher-ranked programs by 20%. Building on these …

Sccosmix: A Mixed-Effects Framework For Differential Coexpression And Transcriptional Interactions Modeling In Single-Cell Rna-Seq, Anderson Bussing, Giampiero Marra, Daping Fan, Russell Shinohara, Danni Tu, Yen-Yi Ho

Faculty Publications

Advancements in single-cell RNA-sequencing (scRNA-seq) technologies generate a wealth of gene expression data that provide exciting opportunities for studying gene-gene interactions systematically at individual cell resolution. Genetic interactions within a cell are tightly regulated and often highly dynamic in response to internal cellular signals and external stimuli. Evidence of these dynamic interactions can often be observed in scRNA-seq data by examining conditional co-expression changes. Existing approaches for studying these dynamic interaction changes in scRNA-seq data do not address the multi-subject hierarchical design commonly considered in single-cell experiments. In this paper, we propose a Mixed-effects framework for differential Coexpression and transcriptional …

Landmarks Of Mental Health In The Prophetic Tradition, Hamza Bin Faye Ibrahim Al-Fathi

Journal of Arts and Social Sciences

Indicators of Emotional Health in the Prophet’s Sunnah is a research that deals with a number of important topics: it first tackles the significance the Sunnah gives to employing human faculty, promoting reflection and contemplation, and balancing the intellectual and spiritual aspects of life. The research further addresses how the Sunnah encourages satisfying innate drives such as hunger, thirst, and sexual desire; meanwhile, controlling negative human emotions, such as anger, envy, arrogance, and selfishness. It also indicates the prophetic treatments the Sunnah provides for such feelings, which positively affect the Muslim character, enabling them to enjoy the feeling of balance …

Using Geomorphic Change And Sediment Modeling To Calculate Debris Flow Volumes From The 2020 El Dorado Wildfire In The Southern San Bernardino Mountains, California, Sevag Injean

Electronic Theses, Projects, and Dissertations

Four years after the occurrence of the 2020 El Dorado Fire, Yucaipa Ridge and the surrounding communities of Oak Glen and Forest Falls still experience the devastation caused by debris flows. Wildfires can instigate a series of events leading to hydrophobic soils, loss of vegetation, and increased sediment availability which amplify post-fire debris flow risks. This study tested the hypothesis that post-wildfire geomorphic changes can be accurately quantified and predicted using high-resolution LiDAR-derived digital elevation models. To investigate this hypothesis, multi-temporal LiDAR datasets were analyzed to quantify geomorphic changes, including erosion and deposition, within two severely burned basins in the …

To Leave Or Not To Leave: Organizational Support Types, Utility And Employee Commitment, Zhe Dong

Electronic Theses, Projects, and Dissertations

Organizational support research has shown it to be a significant predictor of organizational commitment; however, specifying labeling support types and grouping them has rarely been done, let alone the utilization of the supports. In this study, undergraduate students were recruited to investigate how different types of organizational support and their utilization influence organizational commitment (OC), specifically the six types of support groups (monetary/financial, developmental, work-life balance, health and wellbeing, social, recognition, and reward). Using hierarchical regression and moderation analyses, this study examined 1. Whether specific support types predict organizational commitment, 2. Whether specific support types can explain more variance in …

Parent's Play Corner: A Dramatic Play Resource For Parents Of Young Children, Matty Bakeer

Electronic Theses, Projects, and Dissertations

Parents play a critical role in supporting their child’s early development, yet many face barriers that limit their involvement in meaningful, developmentally supportive play—particularly dramatic play. Dramatic play supports children’s language, self-regulation, executive function, and emotional competence, but most existing interventions are school-based and teacher-focused. This creates an access gap for parents, especially those experiencing time, financial, or confidence-related challenges. The present project addresses this gap through the development and implementation of ParentsPlayCorner, an Instagram-based resource that promotes parent engagement in dramatic play at home. ParentsPlayCorner delivers accessible, research-informed content using Instagram. Weekly posts include Motivation Monday (play prompts), Wellness …

Association Between Social Participation And Nonmotor Symptoms Of Parkinson's Disease, Zackary B. Zanotelli

Electronic Theses, Projects, and Dissertations

Research has shown that social participation can aid in slowing cognitive decline and is associated with cognitive functioning in older adults. Being that Parkinson’s Disease (PD) is a neurodegenerative disorder primarily known for its motor and cognitive symptoms, it is worth evaluating social participation in patients with Parkinson’s Disease. The aim of this project is to determine whether social participation is associated with more favorable trajectories of neuropsychiatric symptoms among patients afflicted with Parkinson’s Disease. More specifically, this project will seek to examine how specific social activities may be uniquely associated with cognitive decline.

Participants (N = 8,389) who were …

The Use Of Sludge Content For Effective Recall Of Information, Rahaf G. Fares

Electronic Theses, Projects, and Dissertations

In an age where social media dominates daily consumption, the impact of engaging multi-modal media, specifically “sludge content,” on attention and memory has garnered significant interest. Sludge content, which generally combines unrelated visual gameplay with narrated audio and subtitles, has emerged as a popular form of online entertainment. This study explored whether this type of content enhances information recall by capturing users’ attention, a claim bolstered by theories of optimal arousal, non-pharmacological interventions such as fidget toys, and audiovisual redundancy. Using a within-subjects experimental design, the study investigated the effects of sludge content on effective recall through three conditions: sludge …

E-Leadership Practices And Cultural Intelligence Implementations: Comparative Analysis Between E-Leaders In Higher Education And E-Leaders In Business In The Us, Lubna Alqrawi

Electronic Theses, Projects, and Dissertations

This qualitative comparative case study explored how e-leaders implement subcomponents of Cultural Intelligence (CQ) when interacting with virtual team members from diverse cultural backgrounds or dispersed geographic locations, within both higher education and business contexts. Data were collected from six participants, two from higher education and four from business, based in various locations across the United States. The data were gathered through multiple recorded online interview sessions, and all transcripts were reviewed by the participants for accuracy. The participants were experienced e-leaders, each with three to five years of practice leading virtual teams in culturally diverse environments. The analysis revealed …

Association Between Hidradenitis Suppurativa And Obstructive Sleep Apnea: A Retrospective Cohort Study Using The Trinetx Dataset, Mihir K. Patil, Thomas Z. Rohan, Goranit Sakunchotpanit, Kaushik P. Venkatesh, Sofia Milosavljevic, Vinod E. Nambudiri, Alexandra Charrow

Department of Dermatology and Cutaneous Biology Faculty Papers

No abstract provided.

Transfusion-Related Acute Lung Injury (Trali): Current Understanding, Challenges, And Future Directions, Fahd A. Kuriri

Saudi Medical Journal

ABSTRACT Transfusion-related acute lung injury (TRALI) remains one of the most serious yet often overlooked complications of blood transfusion, contributing to significant morbidity and mortality worldwide. It manifests as acute respiratory distress and non-cardiogenic pulmonary edema within 6 hours of transfusion, requiring immediate recognition and intervention. However, diagnosing TRALI is complex, as its clinical presentation overlaps with other causes of acute lung injury, and its underlying mechanisms remain incompletely understood. This review examines the global burden of TRALI, shedding light on underreporting issues, particularly in resource-limited settings where surveillance systems are inadequate. It explores both antibody-dependent and antibody-independent pathways, focusing …

Epidemiology And Risk Factors Of Methicillin-Resistant Staphylococcus Aureus (Mrsa) Infections In A Tertiary Care Hospital In Saudi Arabia: An 8-Year Retrospective Analysis, Jawharah S. Alhazmi, Ameera S. Al-Khaldi, Naoufel M. Kaabia, Nabiha A. Bouafia, Yasser K. Mohammed, Abdulrahman N. Odayani

Saudi Medical Journal

ABSTRACT Objectives: To control the spread of methicillin-resistant Staphylococcus aureus (MRSA) in healthcare institutions, understanding its local epidemiology is essential. We aimed to investigate the epidemiological, clinical, and bacteriological features of MRSA cases and compare their origin (hospital-acquired versus [vs.] community-acquired) and patient age (pediatric vs. adult). Methods: A retrospective survey was conducted using the electronic database of all MRSA cases reported to the Infection Prevention and Control Center at a tertiary care hospital in Saudi Arabia from 2012 to 2020. We collected epidemiological, clinical, and microbiological data and performed comparative analyses between groups using appropriate statistical tests. Results: Among …

Investigating The Role Of Genetic Variations Of Abcb1 (Rs1045642) And Cyp7a1 (Rs3808607) Genes On Serum Lipid Level Among Malaysian Male Patients Treated With Atorvastatin, Muhammad U. Afzal, Naam B. Adeeb, Nur F. Musa, Dzul A. Noor

Saudi Medical Journal

ABSTRACT Objective: To explore the allele frequency and associations between the presence of single nucleotide polymorphisms (SNP) in the ABCB1 (rs1045642) and CYP7A1 (rs3808607) genes on lipid-lowering efficacy of atorvastatin among Malaysian male patients. Method: The study included 64 subjects from a previous genetic association study among male patients who were on atorvastatin. The study was carried out at HUSM, Kelantan, Malaysia from December 2023 to October 2024. The patients were split into 2 groups, each consisting of 32 subjects such as controlled (LDL level <3 mmol/L) and uncontrolled (LDL level >3 mmol/L). After genotyping each participant, the influence on their lipid profile was determined. Results: …

Glp-1 Analog Therapy And Hemoglobin Levels: Insights From A Retrospective Study, Sarah A. Almuammar, Hani K. Alzahrani

Saudi Medical Journal

ABSTRACT Objectives: To investigate the hematological impact of Glucagon-like peptide-1 (GLP-1) analogs, specifically changes in hemoglobin and ferritin levels. Glucagon-like peptide-1 analogs, pivotal in managing type 2 diabetes mellitus (T2DM) and obesity, exhibit diverse physiological effects. While their impact on glycemic control is well-established, understanding their influence on hematological parameters remains an active area of investigation. Methods: A cohort of 700 patients prescribed GLP-1 analogs between March 2021 and October 2022 was analyzed. Demographic data, baseline hemoglobin, ferritin levels, and subsequent measurements were collected. Statistical analyses included descriptive statistics, Wilcoxon signed-rank tests, Mann-Whitney U tests, subgroup analyses, and multivariable logistic …

Effectiveness Of Epid-Based In-Vivo Dosimetry With Epigray® Software For Head And Neck Vmat Treatments, Ghassan Al-Murshedi, Yasmin Md. Radzi, Azhar Abdul Rahman

Saudi Medical Journal

ABSTRACT Objectives: To evaluate the effectiveness of in-vivo dosimetry (IVD) utilizing an electronic portal imaging device (EPID) in conjunction with EPIgray ® software (DOSIsoft, Cachan, France) for assessing the accuracy of dose delivery for the patient when undertaking head and neck (H&N) treatments. Methods: Using cross-sectional analysis, data were collected from the linear accelerator of twenty patients undergoing (H&N) radiotherapy treatments using the Volumetric Modulated Arc Therapy (VMAT) modality from June 2019 to October 2023 at Gleneagles Hospital Penang, Penang, Malaysia. EPIgray ® software reconstructed the delivered dose based on EPID images. These reconstructed doses were compared with the planned …

A 12-Year Analysis Of Seasonal Patterns And Disease Dynamics Of Cutaneous Leishmaniasis In Saudi Arabia, Basmah F. Alharbi, Mawahib A. Ahmed

Saudi Medical Journal

ABSTRACT Objectives: To investigate seasonal patterns of cutaneous leishmaniasis in Saudi Arabia, examining how incidence rates vary throughout the year. By exploring these dynamics, we aim to gain insights that could improve understanding and prevention strategies for this disease. Cutaneous leishmaniasis , a global parasitic disease affecting millions, presents a significant health challenge. Methods: This study analyzed epidemiological data from Saudi Arabia from January 2012 to December 2023, using records from the Ministry of Health to document incidence. Statistical methods, including Chi-squared tests and ANOVA, were employed, along with correlation and regression analyses to forecast future cases. Results: The findings …

How Accurately Are Racial Minorities Represented In Us Cancer Registration Systems?

Saudi Medical Journal

No abstract provided.

Social Connection Linked To Improved Health And Reduced Risk Of Early Death

Saudi Medical Journal

No abstract provided.

Computational Learning Across Biological And Industrial Systems: Bayesian And Segmentation Models For Epigenomic And Manufacturing Data, Prosenjit Roy

All Theses

In this thesis, we made a complete dual-domain investigation using a machine learning approach into two different scientific areas which were epigenetic analysis of seal species and pore identification in the work of additive manufacturing. The study showcased the flexibility and strength of modern computational tools in addressing complicated issues in various biological and industrial systems. We further investigated the epigenetics by using the Bayesian Neural Network and other machine learning methods to conduct a study on the DNA methylation pattern within three pinniped species (the northern elephant seal, Hawaiian monk seal, and Weddell seal) with perfect precision on species …

Research On The Relationship Between Manufacturing Process Digitalization And Product Quality Performance: A Case Study Of Discrete Manufacturing, Baozhong Zhang

Dissertations and Theses Collection (Open Access)

The study aims to explore the impact of digital transformation on product quality in discrete manufacturing enterprises. As the global economy and technology rapidly advance, the manufacturing industry faces unprecedented challenges and opportunities. Digital transformation has emerged as a key strategy for tackling these challenges and has become a significant trend in the manufacturing industry. The discrete manufacturing industry, which demands high product quality, faces even greater challenges in digital transformation. However, if discrete manufacturing enterprises successfully navigate this transformation, they can significantly improve quality, gain a competitive edge, and unlock even greater opportunities for their business.

The study combines …

Computational Fact-Checking With Limited Resources, Fengzhu Zeng

Dissertations and Theses Collection (Open Access)

The rapid dissemination of information through online platforms has sparked widespread concern about the propagation of misinformation. Manual fact-checking by pro- fessional fact-checkers is time-consuming and lacks scalability to address the vast volume of daily information. Consequently, computational fact-checking, driven by automated techniques in natural language processing (NLP), has garnered interest as
a potential solution. However, computational fact-checking faces critical challenges limited resources, particularly due to the issues of data scarcity and computing resource constraints. One key challenge is data scarcity, which arises from the constant generation of new information and emerging events on social media. This scarcity manifests in …

Ev Charging Management In A Real-Time Optimization Framework Considering Operational Constraints, Hilmi Cihan Güldorum, Ayşe Kübra Erenoğlu, İbrahim Şengör, Barry P. Hayes, Ozan Erdinç

Department of Computer Science Publications

The electrification of transportation plays a central role in the decarbonization of energy systems. Although electric vehicles (EVs) are expected to reduce energy related emissions, the increasing demand imposed by large scale EV adoption presents serious challenges for distribution systems (DSs), which were not originally designed to accommodate such loads. This study proposes a mixed integer quadratically constrained programming (MIQCP) framework to optimize the operation of an EV parking lot (EVPL) under DS constraints. The model compares three widely adopted objective functions: minimization of active power loss, charging cost, and uncontrolled charging impact, which is represented by minimizing the total …

Dentistry And The Law: Length Of Covenants Not To Compete, Dan Schulte Jd

The Journal of the Michigan Dental Association

This article clarifies the distinct legal standards for covenants not to compete in Michigan, particularly relevant for dentists selling their practice and remaining employed. A covenant in an employment agreement is enforceable if "reasonable," typically limited to two to three years and the employer's patient draw area. In contrast, a covenant within a purchase agreement, considered a commercial contract, is judged under a more lenient "rule of reason" standard. This standard is easier to satisfy, requiring only that the covenant does not adversely impact the relevant market. Consequently, purchasers often use the purchase agreement to impose harsher, longer-term restrictive covenants.

Water Fluoridation: A Personal Perspective On The Effectiveness Of Community Water Fluoridation, William Chase Dds, Maom

The Journal of the Michigan Dental Association

This article offers Dr. William R. Chase's personal insights into community water fluoridation, emphasizing its effectiveness in preventing dental caries. It traces the discovery of fluoride's benefits back to Frederick McKay's 1901 observations and highlights the pivotal 1945 Grand Rapids Study, which demonstrated significant caries reduction, especially in younger age groups. Despite long-standing support from the American Dental Association, controversies regarding fluoride's safety persist, leading to recent state-level bans. Dr. Chase's experiences in countries without fluoridated water, where he observed severe decay and life-threatening cellulitis, underscore his belief in fluoride as a "miracle supplement" when properly utilized. The Michigan Dental …

Human Resource Management And Black Teachers’ Employee Experience In K-12 Urban Public Schools, Danielle Renee Cooper-Williams

Dissertations

National teacher data indicate that publicly funded schools in the United States struggle to retain Black teachers in high-need urban areas and in comparison to other groups (Carver-Thomas & Darling Hammond, 2017). This qualitative investigation employed case study methodology. The case study focused on one school within a charter management organization (CMO), exploring interactions among Black teachers and their supervising administrators at the site and management organization levels. The study was organized around concepts articulated at the nexus of teacher retention scholarship and human resource management theory, two bodies of literature yet to be substantially integrated to understand Black teachers’ …

Do Themes Improve Visitor Outcomes In Interpretive Programs?, Amber K. Hawes

All Theses

Thematic interpretation is widely promoted as being integral to an effective interpretive program. Some studies have suggested that thematic interpretation may enhance visitor outcomes; however, park visitor demographics have changed over the last decade, and others have suggested alternative approaches. In this study, we systematically observed live interpretive programs at 330 programs at 52 National Parks across the United States, monitored the extent and characteristics of theme usage, and collected visitor surveys immediately following each program. We used these data to determine the influence of the presence and characteristics of themes and theme questions on visitor outcomes. The results suggest …

Commodity Diversification, Technological Innovation, And Market Dynamics: Insights Into Beef Cattle Production And Feeder Cattle Basis In The United States, Nik Berg

All Theses

The beef cattle industry plays an important role in the agricultural economy, contributing to both domestic food supply and global trade. The United States is one of the world's largest producers of beef, with production systems varying widely across regions largely due to differences in available resources and market structures. Market conditions, technological advancements, and policy interventions shape the way producers operate, making research into these factors essential for both industry stakeholders and policymakers.

Producers are continuously adapting to changing economic conditions, environmental challenges, and evolving consumer preferences. By analyzing these factors, researchers can provide insights to support informed decision-making …

Post-Harvest Storage Of Fuzzy Cottonseed: Quality, Airflow Modeling, And Energy Use, Elijah T. Porter

All Theses

Fuzzy cottonseed is a valuable byproduct of the cotton ginning process. When cottonseed exits the cotton gin, it often retains high temperatures and moisture contents. Once in a storage facility, the cottonseed needs to be conditioned for safe storage. The overall objectives of this study were to analyze quality changes in cottonseed according to storage conditions, determine the airflow resistance properties of fuzzy cottonseed, develop a computational fluid dynamics (CFD) model of a representative cottonseed storage facility, and analyze cottonseed aeration fan strategies, runtimes, and costs. Changes in quality dictate the allowable storage time for cottonseed and are impacted by …

Computational Study Of Nonlinear Electrokinetic Phenomena In Shear-Thinning Fluids, Wai Yuen Leung

All Theses

Electrokinetic phenomena have been widely used for fluid pumping and particle manipulation in micro/nanofluidic systems. They refer to the motion of fluids or particles in response to an electric field because of the spontaneous formation of an electric double layer at the fluid-solid interface. Understanding electrokinetic phenomena in micro/nanochannels is critical for a wide range of applications across various engineering fields, such as disease diagnostics, contaminant treatment and cell analysis. To date, numerous studies have been reported on electrokinetic phenomena in Newtonian fluids, where the classical Helmholtz-Smoluchowski theory indicates a linear relationship between fluid electroosmosis/particle electrophoresis and electric field. However, …