Digital Commons Network^™

Toward A Model Of Hardiness Development: The Effect Of Hope On Hardiness, Chin Heng Low, Paul Heng Leong Lim, Kevin Koh

Research Collection Lee Kong Chian School Of Business

Hardiness has been proven to help with the management of psychological stress. It is an important state-like personality dimension that individuals can develop to cope with stressors. However, there is currently insufficient understanding on why hardiness develops in people. Through an exploratory study based on 55 undergraduate university students who worked on an international consulting project in return for grades, this research examines the relationship between individuals’ hardiness components of commitment, control and challenge and hope components of willpower and waypower. It is found that individuals’ hope components may be positively related to specific hardiness components. This bears considerable theoretical …

Leveraging Reward-Based Crowdfunding During Covid-19, Hannah H. Chang, Erin Jasmine Guillermo, Colin Chai

Research Collection Lee Kong Chian School Of Business

Over the last year, Singapore firms have faced unforeseen market disruptions created by the Covid-19 pandemic. Worldwide country lockdowns, supply chain disruptions, and restrictions on business operations due to public health and safety measures posed non-trivial challenges. Many companies scampered to find alternative sources of revenue and ramp up their efforts at digitalisation - or risk the possibility of business closure.

Self-Reported Social Media Use Among Ophthalmology Residents, Arjun Watane, Hasenin Al-Khersan, Meghana Kalavar, Bilal Ahmed, Michael Venincasa, Jayanth Sridhar

Journal of Academic Ophthalmology

Abstract

Objective To assess ophthalmology trainees' self-reported use of and attitudes toward social media.

Methods An online survey was distributed by email to ophthalmology residency applicants of the Bascom Palmer Eye Institute between September 2016 and January 2020.

Results Of the 1,688 email recipients, the survey was filled by 208 ophthalmology trainees (12.3%). Nearly all trainees reported using social media for personal purposes (92.3%), while less than half used social media for professional purposes (43.4%). There were mixed sentiments regarding the impact of social media on the patient–physician relationship, with the majority feeling that it challenges a physician's authority (55.2%) …

The Pest Kill Rate Of Thirteen Natural Enemies As Aggregate Evaluation Criterion Of Their Biological Control Potential Of Tuta Absoluta, Joop C. Van Lenteren, Alberto Lanzoni, Lia Hemerik, Vanda H.P. Bueno, Johanna G. Bajonero Cuervo, Antonio Biondi, Giovanni Burgio, Francisco J. Calvo, Peter W. De Jong, Silvia N. López, M. Gabriela Luna, Flavio C. Montes, Eliana L. Nieves, Pascal Osa Aigbedion-Atalor, Maria B. Riquelme Virgala, Norma E. Sánchez, Alberto Urbaneja

All Peer-Reviewed Publications

Ecologists study how populations are regulated, while scientists studying biological pest control apply population regulation processes to reduce numbers of harmful organisms: an organism (a natural enemy) is used to reduce the population density of another organism (a pest). Finding an effective biological control agent among the tens to hundreds of natural enemies of a pest is a daunting task. Evaluation criteria help in a first selection to remove clearly ineffective or risky species from the list of candidates. Next, we propose to use an aggregate evaluation criterion, the pest kill rate, to compare the pest population reduction capacity of …

Semiochemical Signatures Associated With Differential Attraction Of Anopheles Gambiae To Human Feet, Maurice O. Omolo, Isaiah O. Ndiege, Ahmed Hassanali

All Peer-Reviewed Publications

Background: Several human-produced volatiles have been reported to mediate the host-seeking process under laboratory conditions, yet no effective lure or repellent has been developed for field application. Previously, we found a gradation of the attractiveness of foot odors of different malaria free individuals to Anopheles gambiae sensu stricto Giles. In this study, foot odor of the individual with the most attractive 'smelly' feet to the An. gambiae was collected, analyzed and attractive blend components identified. Methods: The foot odor of the individual with the most attractive 'smelly' feet to the An. gambiae was trapped on Porapak Q and analyzed by …

In Situ Nitrogen Mineralization And Nutrient Release By Soil Amended With Black Soldier Fly Frass Fertilizer, Dennis Beesigamukama, Benson Mochoge, Nicholas Korir, Changeh J. Ghemoh, Sevgan Subramanian, Chrysantus M. Tanga

All Peer-Reviewed Publications

Although black soldier fly frass fertilizer (BSFFF) is effective on crop performance, information on nitrogen (N) mineralization and nutrient release capacity of soils amended with BSFFF is lacking. This study utilized field incubation experiments to investigate the ammonification, nitrification, microbial populations, and quantities of nutrients released by soils amended with BSFFF and commercial organic fertilizer (SAFI) for a period equivalent to two maize cropping seasons. For the control treatment, no BSFFF or SAFI was added. Results indicated that most of the N in BSFFF amended soils was available in the ammonium form, while soils treated with SAFI had higher nitrate …

A System Dynamics Model For Pests And Natural Enemies Interactions, Bonoukpoè Mawuko Sokame, Henri E.Z. Tonnang, Sevgan Subramanian, Anani Y. Bruce, Thomas Dubois, Sunday Ekesi, Paul André Calatayud

All Peer-Reviewed Publications

Stemborers (Busseola fusca, Sesamia calamistis and Chilo partellus), the fall armyworm (Spodoptera frugiperda) and associated parasitoids constitute an interacting system in maize fields in Kenya. This work aims at developing and evaluating models that represent the evolution of those interactions by applying system thinking and system dynamics approaches with its archetypes [causal loop diagram (CLD), reinforcing (R) and balancing (B)] to analyse the population of these multi-species systems. The software Vensim PLE 8.0.9 was used to implement the models and carry out the simulations of single- and multi-species systems. The results showed that when a single pest species with its …

Practice Enterprises In Times Of Distance Learning: The Impact And Consequences Of The Covid-19 Pandemic To The Collaboration Of Practice Enterprises, Theresa Feuchter, Gernot Dreisiebner, Elisabeth Riebenbauer, Ph.D., Michaela Stock

International Journal for Business Education

The aim of this paper is to outline the consequences which arise from the digital transformation of the multidimensional teaching and learning setting of practice enterprises and to discuss how digital collaboration of students can be supported during the COVID-19 pandemic. As an evolutionary moment also in the field of education, one can consider the experiences of COVID-19 as a catalyst for digital transformation and distance learning in education. How digital collaboration can be fostered in times of distance learning is shown by using the example of business simulations such as practice enterprises (PE). While previously this multidimensional teaching and …

How Are Agricultural Research Projects Conceiving Innovation? An Assessment Of The European Union Multi-Actor Projects, Samuel Brea Martinez-Collado

Graduate Theses and Dissertations

Horizon research programs are the European Union’s lighthouse for innovation and research concerning the agri-food chain, the management of natural resources, and the bioeconomy. Their innovation strategy approach is one that pursues the practical application of the research via the collaboration of all actors involved. Such strategy is the reflection of a Multi-Actor Approach as their procedure to enhance innovation. This paper presents the main trends and directions 101 Multi-Actor Projects (MAPs) are following on said approach towards innovation. The analysis is based on the use of well-defined “pathways” and “measures” proposed in the Guidelines for Evaluation of Innovation in …

Solar Generated Electricity: An Analysis Of What Sectors Are Most Affected By Renewable Portfolio Standards And Related Policies, Logan Knollenberg

Dissertations and Theses

The aim of this thesis is to analyze state-specific Renewable Portfolio Standards (RPS) to understand their design and spillover effect onto non-utility (commercial, residential, industrial) sectors. Past research has overlooked non-utility sectors, often focusing on overall renewable energy growth and electricity generation from a combined end-result perspective. Solar capacity and solar generated electricity data from 5 states are used to establish which non-utility sectors experienced the highest level of solar growth from RPSs and related policies between 2010 and 2019. An explanatory sequential design is utilized, where interrupted time series analyses and exploratory case studies are performed to analyze each …

Library Holiday Hours, Beatriz Varman

TMC Library Newsletter (2015-)

The library will be closed Friday, December 24 - Sunday, January 2 Regular hours resume January 3, 2022

The Y-Factor: Why Do Research?, Jeff Gates

The Christian Librarian

No abstract provided.

Using Appreciative Inquiry To Improve Instruction And Collaborative Partnerships, Amber C. Wessies, Julie A. Powell

The Christian Librarian

No abstract provided.

Kim's "Analog Church: Why We Need Real People, Places, And Things In The Digital Age" (Book Review), Joshua Strickler

The Christian Librarian

No abstract provided.

Warwick's "Humming Words: A Collection Of Poetry" (Book Review), Lauren Bedoy

The Christian Librarian

No abstract provided.

Neither Buddhist Nor Taoist, But Both (And Even More): Exploring The ‘Hall Of Infinite Principle’ (Guangli Fotang): A Chinese Temple In The Romanian Capital, Serban Toader

Occasional Papers on Religion in Eastern Europe

This ethnography regards the sole Chinese temple in the Romanian capital Bucharest, its people and activity, as well as the thinking that supports this new religious movement (Maitreya Great Tao,Mile Dadao 彌勒大道). It is common knowledge that Taoism, Budhism, and Confucianism appear, at least in the official discourse, as a braided rope of unified Chinese tradition, each of the three at the same time preserving their particular features. Nevertheless, Mile Dadao not only seems to implicitly unite the three traditions in one (to which other foreign or popular traditions may be added as well), but also aims to act as …

Approachable Error Bounded Lossy Compression, Robert Raymond Underwood

All Dissertations

Compression is commonly used in HPC applications to move and store data. Traditional lossless compression, however, does not provide adequate compression of floating point data often found in scientific codes. Recently, researchers and scientists have turned to lossy compression techniques that approximate the original data rather than reproduce it in order to achieve desired levels of compression. Typical lossy compressors do not bound the errors introduced into the data, leading to the development of error bounded lossy compressors (EBLC). These tools provide the desired levels of compression as mathematical guarantees on the errors introduced. However, the current state of EBLC …

An Investigation Of Engineering Majors: Graduates' Enrollment Timelines And First-Year Students' Perceptions And Exploration, Baker A. Martin

All Dissertations

The selection of a specific engineering major can substantially impact a student’s undergraduate experience and can also impact future career opportunities. This work is divided into complementary studies of Enrollment, Perception, and Exploration. Together, the three studies seek to answer six research questions related to (i) when and where students enroll in their graduation majors in different matriculation models, (ii) how students perceive both engineering in general and the engineering majors, and (iii) the impacts of a major exploration course on confidence in major choice, major changes, and fit and satisfaction in engineering in general and in the engineering majors. …

The Causal Effects Of Growing Up In A Two-Parent Household: Evidence From The Psid On Schooling, Earnings, And Labor Force Participation, Bob Shihao Wen

All Dissertations

The children who grew up in a two-parent household earn more than the other children reared in non-intact parental families. The causal effects of growing up in a two-parent household can be identified using two specification strategies. First, I include the parental household income and educational attainment in the model, along with the child’s demographic characteristics (age, gender, race, and state of residence), to disentangle the childhood family structure effect from the other parental influence. Second, I use the average state divorce rate over the child’s first 16 years of childhood and the childhood years of exposure to the no-fault …

Numerical And Experimental Study Of Machining Process Of High Strength Lightweight Materials, Chao Zhang

All Dissertations

No abstract provided.

Coupled Thermal Mechanical Analysis Methodology For Thermal Performance Evaluation And Failure Mode Identification Of Thermal Barrier Coatings For Heavy Duty Diesel Engines, Sean Moser

All Dissertations

Consumer demand and government regulation, as well as the Department of Energy’s SuperTruck program has motivated extraordinary effort to maximize the heavy-duty diesel engine’s thermal efficiency. Thermal barrier coatings (TBCs) provide an avenue for increasing the thermal efficiency of the mixing controlled combustion (MCC) process through the reduction of heat transfer losses. The myriad of previous studies presents conflicting conclusions, both in the merit of TBCs for cycle improvement, and also for coating durability and potential adverse effects from coating failure. While the most recent studies with thin thermal barrier coatings (~100-250 µm) have shown a majority of positive cycle …

Seismic Performance Assessment Of Building Contents: Monetary Losses And Injuries, Sereen Majdalaweyh

All Dissertations

Building contents include all the components that are not attached to the building which the owners place after the construction phase, such as furniture, electrical equipment, glassware, and other personal items. Loss and damage assessment of building contents proved to be challenging in performance-based earthquake engineering frameworks because of the data sparsity. Damages to building contents during an earthquake not only cause monetary losses; tumbling and over-toppling of heavy building contents could result in injuries and even deaths of occupants. While major advancements have been made in performance-based earthquake engineering; however, the focus is mainly on damages and collapse risk …

Influencing The Inflammatory Response Through Multi-Scale Geometry, Antibiotic Release, And Fluid Management In A Textile-Based Biomaterial Wound Dressing, Elizabeth Gianino

All Dissertations

The total population of diagnosed and undiagnosed diabetes mellitus in the United states is expected to rise by 54% between the years of 2015 and 2030 contributing to $200 billion in health care expense. The exponential rise in common diabetic wounds, such as diabetic foot ulcers, puts a large population at risk for complications such as infection, amputation, and even death. Peripheral neuropathy leading to late diagnoses, patient non-compliance, and lack of holistic treatment options all contribute to complications with the incidence of new ulcer formation after treatment reaching 50%. This work explores the design, development, and in vitro evaluation …

Reinforcement Learning Based Design Methodology For Building Performance: A Case Of Building Facades With Kinetic Elements, Sida Dai

All Dissertations

With the increasing complexity of design problems in building performance, traditional design methods are difficult to meet the growing demand of designers. For example, in building facades with kinetic elements, traditional design methods are facing many constraints due to the complex design variables and requirements. This study applied reinforcement learning(RL) to building performance optimization and proposed a novel design methodology. This design methodology consists of two parts: (1) a reinforcement learning-based design system; (2) an improved design process based on reinforcement learning.

The construction of the design methodology started from the analysis of design algorithms. Next, the design system was …

Arbitrage Among Stablecoins, Peiyun Jin

All Dissertations

We examine the trades data and order book from 13 exchanges to study the arbitrage opportunities in stablecoins. Using snapshots of the order book data, we find that occasional prices far from the arbitrage-free prices (flash crashes) are real. Flash crashes invariably are associated with unusually large aggregate trading volume. We also examine arbitrage profitability and fee structure for stablecoin-USD and stablecoin- stablecoin. Our results show that after subtracting fees, there are still positive arbitrage profits. We also compare the efficiency of Decentralized Exchanges (DEXs) and Centralized Exchanges (CEXs). Our results are consistent with DEXs and CEXs being equally efficient.

Essays On The Housing Market In China And Some Evidence On Inflation Targeting, Yanchao Li

All Dissertations

The housing market in China enjoys great prosperity after a continuously rapid development for more than a decade. However, there are growing concerns about possible bubbles as the price continues to rise while ordinary workers cannot afford a house. The government of China has implemented different kinds of regulations to slow rapid price increases and stabilize the market since 2007. The first paper looks at the characteristics and determinants of housing prices in different tiers of cities in China over the period 2002–2017, and then the second paper examines the impact of different types of regulations on the real estate …

An Algorithm For Biobjective Mixed Integer Quadratic Programs, Pubudu Jayasekara Merenchige

All Dissertations

Multiobjective quadratic programs (MOQPs) are appealing since convex quadratic programs have elegant mathematical properties and model important applications. Adding mixed-integer variables extends their applicability while the resulting programs become global optimization problems. Thus, in this work, we develop a branch and bound (BB) algorithm for solving biobjective mixed-integer quadratic programs (BOMIQPs). An algorithm of this type does not exist in the literature.

The algorithm relies on five fundamental components of the BB scheme: calculating an initial set of efficient solutions with associated Pareto points, solving node problems, fathoming, branching, and set dominance. Considering the properties of the Pareto set of …

Capillary Driven Transport In Soft Solids, Saiful Islam Tamim

All Dissertations

Soft solids, such as polymeric gels, are elastic materials that can be significantly deformed by capillary forces which act at the interface. The coupling between elasticity and capillarity is known as elastocapillarity and is useful to wide ranging applications, from drop pinchoff of bioinks for 3-D printing tissue scaffolds, to generating droplet patterns on microfluidic devices. In this dissertation, we develop mathematical models of elastocapillary driven motions in soft solids. The focus is on understanding the relevant physics in such complex phenomena, while also recovering the limiting cases of classical fluid mechanics and solid mechanics theories.

This dissertation investigates two …

Identification Of Biomarker Systems Of Autism Spectrum Disorder And Uterine Cancer, Allison Hickman

All Dissertations

Complex diseases and disorders pose a challenge to scientists due to their variable and often inconsistent genetic and environmental underpinnings across affected individuals. Because of this variability, large condition-specific datasets and corresponding analytical tools and approaches are being curated as resources to investigate potential genetic trends in complex diseases and disorders. In this Dissertation, I used DNA- and RNA-based resources to discover polygenic biosignatures associated with Autism Spectrum Disorder (ASD) or uterine cancer. To explore the intersection of small-effect common DNA variants and regulation in ASD, I discovered and analyzed trends in allelic associations at eQTLs within ASD-affected individuals. Association …

Understanding And Modulating Amyloid Aggregation, Yanting Xing

All Dissertations

Amyloids are the products of protein misfolding into fibril-like structures, which take place in human tissues and organs, including the human brain, heart, liver, and pancreas. As the deposition of amyloid fibrils usually leads to the dysfunction or death of cells, the formation of amyloid is associated with more than 20 human diseases, such as Alzheimer’s, Parkinson’s, and type 2 diabetes. Understanding how soluble peptides to form amyloid fibrils and how to modulate those amyloid aggregation are central to the design of rational therapeutic strategies against those diseases. Increasing experiments suggest that amyloid peptides can undergo liquid-liquid phase separation (LLPS) …