Digital Commons Network^™

Do Search Costs Explain Persistent Investment In Active Mutual Funds?, Aljoscha Janssen, Jurre Thiel

Research Collection School Of Economics

Active funds, though losing market share since the 1990s, make up nearly half of all mutual funds but charge more without better performance. We analyze fund data and a search model, highlighting the impact of search costs and active fund preferences. From 1993 to 2018, reduced search costs expanded the market and heightened competition, while a preference shift from active to passive funds increased the latter's market share. However, investors who choose active funds, facing higher search costs, and continue to show a strong preference for them, allow these funds to keep charging higher fees.

Query Understanding In Llm-Based Conversational Information Seeking, Yifei Yuan, Zahra Abbasiantaeb, Mohammad Aliannejadi, Yang Deng

Research Collection School Of Computing and Information Systems

Query understanding in CIS involves accurately interpreting user intent through context-aware interactions. This includes resolving ambiguities, refining queries, and adapting to evolving information needs. LLM enhance this process by interpreting nuanced language and adapting dynamically, improving the relevance and precision of search results in real-time. In this tutorial, we explore advanced techniques to enhance query understanding in LLM-based CIS systems. We delve into LLM-driven methods for developing robust evaluation metrics to assess query understanding quality in multi-turn interactions, strategies for building more interactive systems, and applications like proactive query management and query reformulation. We also discuss key challenges in integrating …

High Frequency Factor Analysis With Partially Observable Factors, Dachuan Chen, Wenqi Lu, Siyu Xie

Research Collection School Of Economics

This paper considers a novel factor structure – Partially Observable Factor Model – where both observable factors and latent factors exist in the model simultaneously. Such factor structure can make sure both interpretability and goodness-of-fit at the same time. Necessary estimation methodologies for this partially observable factor model are developed in this paper for the high frequency data. The proposed estimation methodology is robust to jumps, microstructure noise and asynchronous observation times simultaneously.When the observable factors are exogenous, we provide the estimation theory for the integrated eigenvalues of the residual covariance matrix, which including the bias-corrected estimator, central limit theorem …

Grazing On The Early Life History Stages Of Macrocystis Pyrifera By The Purple Sea Urchin Strongylocentrotus Purpuratus, Sloane Lofy

Capstone Projects and Master's Theses

In California, recent large-scale declines in kelp forest cover, the formation of sea urchin barrens, and the subsequent biodiversity loss have heightened the need to further investigate mechanisms of kelp forest recovery and sea urchin barren dynamics. To better understand the kelp recruitment potential of these deforested areas it is important to determine the effect sea urchins have on the microscopic portion of the kelp lifecycle and if a size refuge exists. Laboratory studies were used to examine the effect of the purple sea urchin Strongylocentrotus purpuratus on the density, percent cover and reproductive output for three microscopic stages of …

Building Respect, Responsibility, And Reciprocity: Insights From A Rural Stem Research Practice Design Partnership, Amanda Obery, Martha Cabell, Shelly Hogan, Matt Queen

The Rural Educator

Rural schools often have strong community involvement and thus can offer educational experiences to students that are more closely aligned with local people and places. However, curricula in rural schools rarely offer this same alignment. Partnerships with others, including higher education, can support rural schools in creating STEM curricula that center the resources and careers present in their communities. A research design practice partnership (RPDP) was created as a Third Space to enable the development of locally relevant STEM curricula. The partnership was formed focusing on respect, responsibility, and reciprocity, necessary tenets as the roles and goals of the project …

Distributed Tracking Control Of Multiple High-Order Uncertain Nonlinear Systems With Guaranteed Performance, Eduardo Alvarez, Wenjie Dong

Electrical and Computer Engineering Faculty Publications

This paper addresses the distributed tracking control of multiple uncertain high-order nonlinear systems with prescribed performance requirements. By introducing a performance function and a nonlinear transformation, the prescribed fixed-time performance tracking control problem is reformulated as a distributed tracking control problem for multiple special nonlinear systems. With the aid of the universal approximation theorem for continuous functions and algebraic graph theory, distributed robust adaptive controllers are designed using the backstepping technique. Simulation results are presented to demonstrate the effectiveness of the proposed algorithms.

Psychosocial Supports For The Physical And Mental Health Of Youth With Autism And Other Neurodevelopmental Disabilities., Melissa Campbell, Elizabeth Hastings, Paige Mcardle, Darren Olsen, Kathryn Benton, Cy Nadler

Manuscripts, Articles, Book Chapters and Other Papers

One in six youth has a neurodevelopmental disability (NDD), and autism diagnostic rates continue to rise. Before and after a diagnosis, families need trusted sources of guidance to navigate co-occurring medical and psychological conditions, and to manage unique stressors including transition to adulthood. However, medical professionals from all specialty areas struggle to identify resources to support the complex psychosocial and healthcare needs of these patients and their families. This primer on psychosocial supports for youth with autism will explore the major mental and physical health stressors faced by affected youth and families, and discuss opportunities for primary care and other …

On Data Envelopment Analysis Framework For Optimizing Two-Stage Systems Under Neutrosophic Environment, Basma E. El- Demerdash, A. Almutairi, Sultan S. Alodhaibi, Hamiden Abd El- Wahed Khalifa, Heba Ghareb Goma

Neutrosophic Sets and Systems

No abstract provided.

Neutrosophic Reliability Assessment Of Hydroelectric Power Plant Using Universal Generating Function Technique, Kanak Saini, Monika Saini, Ashish Kumar, $Dinesh Kumar Saini

Neutrosophic Sets and Systems

No abstract provided.

A Dual Treesoft-Hypersoft Set-Based Framework For Assessing Employment Guidance Satisfaction In Vocational Colleges, Wei Liu, Xing Gao, Hongtao Fang

Neutrosophic Sets and Systems

No abstract provided.

Green Supply Chain Management Capability Evaluation Using Neutrosophic Twofold Algebra Decision Model, Hui Wang

Neutrosophic Sets and Systems

No abstract provided.

Systemic Exogenous Progestins With Or Without Estrogens Are Associated With Decreased Rates Of Venous Procedures For Varicose Veins, Paarth Jain, Adam M. Ostrovsky, Paul J Dimuzio, Luis H. Eraso, Michael Nooromid, Dawn Salvatore, Babak Abai

Department of Surgery Faculty Papers

OBJECTIVES: Risk factors for varicose veins (VVs) such as female sex, pregnancy, and obesity are high estrogen states, yet the role of systemic progestins with or without estrogens (SPEs) in VV management is not well characterized. This study investigates how SPE use affects rates of venous procedures for patients with VV.

METHODS: The TriNetX database was queried for subjects with International Classification of Diseases, 10th edition, diagnoses of asymptomatic VV, chronic venous insufficiency, and complicated VV (inflammation or ulceration). Patients were divided into a control cohort with no subsequent SPE use, a progestin-only cohort, and a combined estrogen-progestin (CEP) cohort. …

Covid-19 Vaccine Attitudes And Behaviors Among Pregnant Women In Nairobi, Kenya With Diverse Socio-Economic And Educational Backgrounds, Jessica Schue, Ferdinand Okwaro, Ingrid Gichere, Daizy Cherono, Mandeep Sura, Emily Miller, Berhaun Fesshaye, Prachi Singh, Grace Belayneh Belayneh, Rupali Limaye, Marleen Temmerman

Centre of Excellence in Women and Child Health

Introduction

Methods

Seasonal And Landscape-Driven Variations In Forage Resources Of Apis Mellifera Scutellata: Implications For Pollination Sustainability And Colony Health In Taita Taveta County, Kenya, Mary Chege, Mbatha B. Wambua, Wambua J. Kilonzo, Sevgan Subramanian, Beatrice T. Nganso

All Peer-Reviewed Publications

Seasonality and land-use change are key factors influencing forage availability for managed honey bee colonies, yet knowledge of forage identity and how these factors influence forage availability remains limited in Africa. To address these gaps, we used DNA metabarcoding to identify nectar and pollen plant species supporting the nutrition of the African savannah honey bee, Apis mellifera scutellata, across different land-use/land cover types and seasons in Taita Taveta County, Kenya. We identified 224 forage plant species from 65 families, with Asteraceae, Fabaceae, and Myrtaceae being the top contributors. Forage availability was significantly influenced by landscape and season, with honey bees …

Assessment Of Bg-Pro (Biogent Ag) And Silver Bullet 2.1 (Lumin8) Uv-Light Traps Efficiency For Surveillance Of Malaria Vectors In Western Kenya, Billy L. Amugune, Richard Tamre, Dylan Mogaka, Oscar Mbare, Tullu Bukhari, Ulrike Fillinger, Margaret M. Njoroge

All Peer-Reviewed Publications

The Centers for Diseases Control (CDC) light trap is widely used for malaria vector surveillance, but its acquisition logistics pose challenges in Africa. Evaluating new traps can improve surveillance tools. This study compared the efficiency of the BG-Pro UV and Silver Bullet 2.1 UV (SB 2.1 UV) against the UV LED CDC trap in western Kenya’s rice irrigation area. The traps were tested indoors in eight houses over 64 nights. Light properties and fan speed were analyzed using spectrometry and an anemometer. The BG-Pro UV trap performed better than the UV LED CDC trap for An. gambiae s.l. (RR 2.0, …

Enhancing Phenotyping Accuracy For Selection Of Urochloa Spp. Tolerant Genotypes To Red Spider Mite (Oligonychus Trichardti), Paula Espitia-Buitrago, José Miguel Cotes Torres, Luis Miguel Hernández, Juan Andres Cardoso, Frank Chidawanyika, Rosa N. Jauregui

All Peer-Reviewed Publications

The red spider mites are a major biotic limitation to productivity for Brachiaria (Urochloa spp.) grasses in tropical Eastern Africa, causing severe economic losses mainly in the dry seasons. However, due to the lack of reports of integrated pest management strategies, genetic resistance can play a crucial role in Brachiaria-based livestock systems, minimising the impact of this pest. The objective of this study was to develop and validate a methodology for accurately categorising resistance responses in Urochloa genotypes to identify potential sources of resistance to the Western Kenya red spider mite Oligonychus trichardti (Meyer 1974). Accordingly, 25 genotypes of Urochloa …

Issues That Ministers Identify As Factors Contributing To Anxiety And Depression, Heather Sawtelle

Doctor of Ministry (DMin)

Although mental health is an emerging topic within the church community, the stigmatization of mental illness within ministers’ lives can create a myriad of personal beliefs that can lead to shame and discontent in ministers’ lives. Many ministers have daily stressors that compromise their mental health, and these stressors can contribute to depression or anxiety. This study defined mental health issues and described mental illness’ influence on ministers’ lives and the factors that contribute to mental health issues. This health condition, described as mental illness, involves significant changes in thinking, emotion, behavior, distress, and problems functioning in social, work, or …

Engraving Goddesses: Hendrick Goltzius’S Mannerist Prints, Emily Seils

Theses

This project analyzes the reception of Hendrick Goltzius’s (1558-1617) prints within the court of Emperor Rudolf II (1552-1612), specifically how his technical expertise in his mythological compositions presented bodily transformation as an alchemical act. He produced images that were intellectually coded for a sophisticated audience while simultaneously capturing the viewer’s gaze and emotions. In doing so he created, alongside his contemporaries, a niche market of high demand art and enabled the "viral" circulation of collectable prints among Northern European elites. Three main topics structured my approach. First, the distinctive development of Rudolf II of Prague’s prestigious art collection, the Kunstkammer, …

The Evolution Of Agriculture Marketing: Harnessing Data Analytics To Understand Generational Shifts And Influencer Trends, Lexi Schweigert

Theses

The findings reveal that data analytics plays a crucial role in shaping marketing strategies in agriculture. Generational shifts, particularly among Gen Z and Alpha, are driving changes in consumer preferences and expectations. Influencers are also playing an increasingly important role in shaping the perception of agriculture and food among these generations.

How Do You Know? Parsing The Infocalypse Using Art-Based Data Visualization, Michelle Sylvia Weintraub

Theses

Since the advent of the World Wide Web, vast interconnected digital networks have increasingly provided access to diverse data sources for Internet users. Towards the turn of the 21st century, social media sites opened opportunities to produce and consume (i.e., prosume) data, empowering users to publish their own content online (Manovich, 2009). The ability to publish user-generated content results in more voices being heard, creating more seats at the proverbial table. However, more recently, persuasive media has increasingly been weaponized to disseminate misinformation and disinformation online (Howard, 2020). Consequently, the agency exercised by Internet and social media users is diminished. …

Beyond Suprematism: Carpenter Ii And The Reimagining Of The Peasant In Malevich's Late Work, Elizabeth Leslie Lancaster

Theses

Every artistic creation is influenced by the dynamics of its origins and the specific intentions of both the artist and the audience to interact with it in a particular way. In abstract art, human elements may be less apparent than in representational art, where recognizable imagery can be more readily linked to the cultural backdrop of its time. Kazimir Malevich’s body of work can superficially be divided into representational pieces and non-objective works. However, a more nuanced interpretation of his oeuvre is warranted. This is particularly relevant to Malevich’s enduring engagement with the peasant motif and the layers of influence …

Benedictine Art And Design: How Color Psychology Can Positively Influence Department Enrollment, Claire Pauline Fink

Theses

This thesis examines how design strategies informed by color psychology and experimental aesthetics can be used to strengthen the visual identity and recruitment efforts of the Benedictine College Art & Design Department (BCAD). Following the recent addition of Graphic Design as a major and the department’s name change in 2021, there has been a noticeable gap in public awareness and printed promotional materials tailored to prospective students. Grounded in theoretical frameworks, such as D. E. Berlyne’s optimal arousal theory, and supported by survey responses from current Art & Design students, this project identifies key needs in marketing to prospective students. …

Elisabetta Sirani’S Timoclea: Baroque Agency And The Aesthetics Of Feminine Rage, Shaylen Grace Gardner

Theses

This thesis examines Timoclea Kills the Captain of Alexander the Great (1659) by Elisabetta Sirani as a foundational example of feminine rage within the Baroque period. By framing Timoclea’s violent act not as an outlier or solely reactive gesture, but as a deliberate, composed assertion of power, Sirani constructs a model of feminine agency that defies patriarchal expectations of female submission and passivity. Through interdisciplinary analysis grounded in feminist theory, formal visual analysis, and retrospective cultural studies, this research argues that Sirani’s Timoclea exemplifies the Baroque’s strategic use of socially acceptable iconography to veil explicit challenges to gendered expectations. This …

Heroic Sacrifice And Christ-Like Bodies: Conceptions Of Immortality In Jacques-Louis David's Death Of Marat, Ingelise Johnson

Theses

This thesis posits a reinterpretation of Jacques-Louis David’s late-eighteenth-century martyr-portrait, The Death of Marat, within its French Revolutionary political function and theological associations. The revolutionary body in Marat is rendered from a corporeal language of antique heroic figures and Renaissance depositions David observed during his study in Rome. It is especially in the iconography of the hanging arm that David illustrates Marat’s association with heroic and sacrificial deaths of antique and Christian imagery. These references convey the artist’s exploration of death within religious beliefs germane to the sociocultural contexts of the revolutionary period. Within antique and Christian theologies, David explores …

Customizing Ai Strategies Across Multiple Generations, Matthew Harrer

Theses

This project investigates how artificial intelligence can help brands and marketers connect more effectively with Generation X, Millennials, and Generation Z. The literature review lays the groundwork that focuses on consumer behaviors and the integration of AI into digital marketing practices for each generation. The second part of the project involves a secondary data analysis of 21 recent marketing surveys and reports that explores topics related to trust, personalization, and social media. By integrating the findings into an insightful guidebook, marketers will be able to maximize these insights into clear actionable strategies.

Through A Mother's Eyes: The Psychology Of Color, Katie Kutz

Theses

This project investigates the intersection of color psychology, maternal experience, and visual perception through a series of five artworks. Using a qualitative methodology, this project draws upon interdisciplinary research such as neuroscience, marketing, art history, and personal experiences as a mother. This work explores how sensory changes during pregnancy and postpartum influence the emotional perception of color, and how this can be represented in art. Inspired by artists that have explored the theme of motherhood such as Mary Cassatt, Käthe Kollwitz, Paula Modersohn-Becker, Jenny Saville, and Alice Neel, this project uses an emotionally charged approach to depicting motherhood. Color changing …

The Role Of Private Law In Promoting Building Safety: The Case Of Singapore, Edward S. W. Ti

Research Collection Yong Pung How School Of Law

Singapore is a tiny granite rock situated just north of the equator. Lacking land, and indeed any kind of natural resource, means that the trend for urban development in the city-state will always be densifi cation; 96 per cent of residents in Singapore already live in multi-owned housing, ie high-rise apartments. 1 Singapore is also a rapidly greying nation. 2 It has been observed that persons over 70 years old are four times more vulnerable in the event of a fi re, 3 and fi re safety is a critical aspect of building safety. Safety features and measures in the …

The Basic Structure In Malaysia: Less Than Meets The Eye, Benjamin Joshua Ong

Research Collection Yong Pung How School Of Law

At first glance, studying the basic structure doctrine in Malaysia can be frustrating due to its inconsistent judicial treatment. While early cases such as Loh Kooi Choon and Phang Chin Hock rejected the doctrine, it was later accepted in landmark decisions like Sivarasa Rasiah, Semenyih Jaya, and Indira Gandhi. In 2020, scholars such as Jaclyn Neo and Yvonne Tew suggested a judicial embrace of the doctrine and its global trend toward constitutional unamendability. However, the Federal Court’s 2021 decision in Maria Chin Abdullah appeared to reject it once more, illustrating the doctrine’s precarious status. The resurgence seen in Dhinesh a/l …

Digital Economy Innovation In The Indo-Pacific: Towards A 'Singapore Effect'?, J.G. Allen, Qiu Xu Martin Liao

Research Collection Yong Pung How School Of Law

This paper examines the rise of Digital Economy Agreements (DEAs) in the Indo-Pacific as a strategic response to digital trade fragmentation and great power competition. Focusing on Singapore’s leadership, we introduce the ‘Singapore Effect’ – a model of regulatory influence distinct from others, such as the ‘Brussels Effect’ and ‘Beijing Effect.’ Unlike market-driven regulatory diffusion, the Singapore Effect emphasizes interoperability, norm entrepreneurship, and mini-lateralism, enabling middle powers to shape digital trade governance. We analyze DEA formation, implementation challenges in national law, and Singapore’s role as a bridge between diverse regulatory regimes. DEAs’ flexible, modular structure allows for incremental regulatory alignment …

Diaspora By Another Name: The Making Of Refugees In Cold War China, Jiaqi M. Liu, Clare Xiaoqian Wan

Research Collection School of Social Sciences

By examining China’s refugee policies from 1949 to 1982, this article demonstrates how the Chinese state redefined “return” and “refugee” to serve shifting political objectives. While China is often perceived as a source, rather than a host, of asylum seekers, it hosted over 320,000 displaced migrants—primarily ethnic Chinese from Southeast Asia—during the Cold War. Through a systematic discourse analysis of 382 People’s Daily articles, we identify four state narratives—diaspora, diplomatic tool, ideological sanctuary, and legal duty—that structured how China labeled displaced migrants, interpreted their sentiments, and determined their settlement. These models evolved dynamically: from the 1950s to the late 1970s, …