Digital Commons Network^™

An Examination Of Psychological Climate Linking Mechanisms Across The Strategic Priorities Of Health And Stress, Alec Munc

All Dissertations

Given that employee health and well-being represent a significant source of financial costs for organizations, this dissertation seeks to address some of the pathways through which organizational efforts to improve physical and mental health may operate. This study drew from a model of safety climate (Neal & Griffin, 2000) to propose that psychological climate exerts in influence on employee health and well-being through the joint moderators of knowledge/motivation and behaviors. The model also extended beyond the typical climate linking mechanisms to include moderators both individual (behavioral activation & behavioral inhibition systems) and contextual (workplace physical exposure). Using a two-wave prospective …

Leisure, Obesity And Weight Loss: An Exploration Of Leisure, The Public Health Ecological Model Of Obesity And Identity Theory, Weber Player

All Dissertations

Obesity is a global health crisis with complex causal relationships. From the mid 1990s to 2010, obesity related research in the clinical and social sciences has exploded. This expansion has resulted in a proliferation of obesity-related articles published in top-tier journals and the creation of new journals solely devoted to obesity research. In contrast within leisure scholarship, a review of leisure journals reveals that published research on the relationship of leisure, obesity and weight loss is minimal. However, numerous leisure scholarship/theory principles are relevant to obesity prevention and treatment. Similarly, public health officials have developed numerous systems-oriented multilevel framework models …

Practical Robust Geotechnical Design- Methodology And Applications, Sara Khoshnevisan

All Dissertations

This dissertation advances the robust geotechnical design methodology by offering improvements, which makes it more efficient and practical for the design of geotechnical systems. Robust geotechnical design (RGD) methodology seeks an optimal design, which is insensitive to, or robust against, the variation in the uncertain input parameters (called “noise factors”) by only adjusting the easy to control parameters (called “design parameters”). The main goal of robust design is to consider safety, cost and robustness simultaneously. Because the cost and the robustness are conflicting objectives, the multi-objective optimization that considers these two objectives while enforcing the safety constraint yields not a …

Exploring Elementary Teachers’ Conceptions Of Global Citizenship Through Cross-Cultural Interaction, Sheliah Durham

All Dissertations

The challenge we face as educators is how to best prepare our students for an increasingly complex and interconnected world. A growing interest in global citizenship education is evidenced by its inclusion in academia related to curriculum development and teacher preparation (Banks, 2008; Merryfield, 2000; 2001; 2003; 2009; Myers, 2006; Nussbaum, 2002). I, following other scholars, argue that global citizenship education provides an opportunity to develop tolerances, appreciation for differences, and global awareness, as well as providing a format to address current and future global issues (Ikeda, D. 2005; Noddings, 2005a; Merryfield 2000; 2007; 2009). Yet, a review of the …

An Investigation Of The Efficiency Of Synergistic Multicultural Teams, Melissa Dorlette Paul

All Dissertations

The current globalized environment has increased the prevalence of multicultural teams in the workplace. While much research has focused on the advantages of such teams, the challenges companies should anticipate when using them has not received as much attention. These difficulties, specifically communication and trust, need to be considered to ensure that the company remains competitive in an economy driven by growing client expectations. In addition, companies often have to meet tight delivery schedules in order to survive, an expectation which adds strain on production teams. Efforts to address these issues have ranged widely, with some researchers suggesting cultural awareness …

Iterative Design And Testing Of A Mobile Application To Support Food Consumption Monitoring And Decision Making, Melva James

All Dissertations

Food overconsumption is a major contributor to weight gain leading to obesity. Constant exposure to larger amounts of food and beverage has caused many individuals to experience “portion distortion,” the perception that bigger portion sizes are appropriate for consumption at a single sitting. Independently and accurately changing this perception can be very difficult even if one has a desire to do so. In response to these observations, we developed and tested Picture-Perfect Portions, a mobile application designed to combat overconsumption, at the individual level, by leveraging the power of simple visualizations to help adults understand and adjust their food consumption …

Proportioning And Properties Of Ultra-High Performance Concrete Mixtures For Application In Shear Keys Of Precast Concrete Bridges, Zhengqi Li

All Dissertations

Ultra-high performance concrete (UHPC) is defined as a cementitious based composite material with compressive strengths above 150 MPa, pre-and post-cracking tensile strengths above 5 MPa, and enhanced durability. To achieve desired properties, UHPC is typically produced with low water-cementitious materials (w/cm) ratio (i.e. w/cm < 0.25), high cementitious materials content (i.e. >1000 kg/m3), high quality aggregate, high dosage of high-range water reducing admixture (HRWRA) and reinforcing fibers. UHPC has distinct advantages in applications where narrow formwork and dense reinforcement are inevitable, high compressive strength concrete material is required and the surrounding environment is aggressive. The construction of shear keys in precast bridges is one of the important …

Robust Model Development For Evaluation Of Existing Structures, Saurabh Prabhu

All Dissertations

In the context of scientific computing, validation aims to determine the worthiness of a model in supporting critical decision making. This determination must occur given the imperfections in the mathematical representation resulting from the unavoidable idealizations of physics phenomena. Uncertainty in parameter values furthers the validation problems due to the inevitable lack of information about material properties, boundary conditions, loads, etc. which must be taken into account in making predictions about structural response. The determination of worthiness then becomes assessing whether an unavoidably imperfect mathematical model, subjected to poorly known input parameters, can predict sufficiently well in its intended purpose. …

Nursing Interruption Dynamics: The Impact Of Work System Factors, Yushi Yang

All Dissertations

Interruptions occur frequently in healthcare work systems. Hands-free Communication Devices (HCDs) were implemented in healthcare work systems to support the interruption process. However, from a sociotechnical systems perspective, HCDs may introduce new complications and unintended consequences to the work system. Research gaps exist in investigating the complexity of HCD interruptions in the real-world context. This dissertation aims to understand HCD interruption dynamics in the nursing work systems, using qualitative research methods. The first study examined the major differences between face-to-face and HCD-mediated interruptions, based on 30 hours of field observations in the acute care setting. Three major differences included: (1) …

Secondary English Teachers Dispositions Toward Technology Integration In One-To-One Environments, Reed Chewning

All Dissertations

This study examined how high school English teachers define technology integration and how teacher beliefs regarding technology integration impacts teacher and student use of digital technologies for instructional purposes. Thirty-nine teachers from three high school English departments in their initial year of a one-to-one device implementation participated in this study. Qualitative and quantitative data were collected and analyzed to examine how high school English teachers define technology integration and to examine if teacher beliefs informs technology integration practices. Quantitative data included the use of the TPACK formative assessment tool and an instructional technology use survey. Qualitative data included open-ended survey …

Designing Optical Properties In Infrared Glass, Benn Gleason

All Dissertations

Chalcogenide glasses (ChGs) are well-known for their attractive optical properties, such as high refractive index and transparency in across infrared wavelengths. ChGs also possess the ability to compositionally tune properties such as the refractive index, the thermo-optic coefficient, and other non-optical properties. Chalcogenide glasses with compositionally tailored physical and optical properties will provide optical designers with new materials necessary to create novel infrared imaging systems requiring new or expanded functionality. This dissertation has evaluated the relationship between glass composition, the resulting atomic structure, and resulting optical and thermo-optical properties, with specific focus on the infrared refractive index and the thermo-optic …

Optimization Of Pyrochlore Catalysts For The Dry Reforming Of Methane, Felipe Polo Garzon

All Dissertations

The conversion of methane into syngas (a mixture of CO and H2), which can be further converted into a variety of chemicals and particularly liquid fuels, is of growing importance given recent increases in methane production world-wide. Furthermore, since using CO2 as the co-feed offers many environmental advantages, dry reforming of methane (DRM, CH4 + CO2 ⇌ 2CO + 2H2) has received renewed attention. In recent years, experimentalists have shown that the Rh-substituted lanthanum zirconate pyrochlore (LRhZ) material is catalytically active for DRM, exhibits long-term thermal stability and resists deactivation; however, previous to this doctoral work, a detailed understanding of …

Multi-Factor Models To Resolve Growth Responses In Vitro And During Subsequent Greenhouse Growth For Turmeric (Curcuma Longa L.), Rabia El-Hawaz

All Dissertations

Plant media has been developed over the last six decades, yet, there has not been medium optimized for microplant greenhouse growth, which may be important for producing chemical compounds and preparing transplants for success in the field. A series of multi-factor optimization experiments were conducted on turmeric (Curcuma longa L., genotype L 35-1) to identify the effects of mineral nutrition and plant density in vitro on laboratory and greenhouse production. The first experiment optimized PO43-, Ca2+, Mg2+, and KNO3 for five-months growth in bioreactors with periodic supplementation of sucrose solution +/- nutrients. Phosphorus (6.25 mM) increased sucrose supplement and rhizome …

Development And Validation Of A Novel In Vitro Model For The Assessment Of Heterocellular Interactions Mediated By Connexin43, Emily Ongstad

All Dissertations

The injury border zone (IBZ), a region of transitional tissue between intact myocardium and the ischemic area, is often the site of lethal reentrant arrhythmia generation in post-myocardial infarction (MI) patients. Disruption to normal connexin43 (Cx43) localization at the intercalated disc (ID), separation of myocytes by activated fibroblasts and deposited scar tissue are thought to be factors that render the IBZ a pro-arrhythmic substrate, though there is a current need to better understand these changes so directed therapies can be developed. There are no clinically available therapies focused on the mechanistic changes in the IBZ. Additionally, generation of new compounds …

Editorial, Teri Behrens, Michael Quinn Patton

The Foundation Review

No abstract provided.

The Theory Of Philanthropy Of The Alberta Family Wellness Initiative, James Radner, Nathaniel Foote, Michael Quinn Patton

The Foundation Review

This article presents the theory of philanthropy of the Palix Foundation, which seeks to improve health and wellness outcomes for children and families in Alberta, Canada, by mobilizing and applying knowledge about brain and early childhood development and the link to lifelong mental health and addiction outcomes.

Through years of intuitive exploration and adaptation, the foundation evolved its role to include brokering access to the latest scientific knowledge, convening key players in multiple forums to explore applying that knowledge, and serving as a learning partner to public systems and communities in Alberta.

Following evaluation of a major phase of the …

A Foundation's Theory Of Philanthropy: What It Is, What It Provides, How To Do It, Michael Quinn Patton, Nathaniel Foote, James Radner

The Foundation Review

This article argues that philanthropic endeavors should be undergirded by a theory of philanthropy. Articulating a theory of philanthropy is a way for a foundation to make explicit what is often only implicit, thereby enabling internal and external actors to pose and resolve significant questions, understand and play important roles more fully and effectively, and improve performance by enhancing alignment across complex systems.

A theory of philanthropy articulates how and why a foundation will use its resources to achieve its mission and vision. The theory-of-philanthropy approach is designed to help foundations align their strategies, governance, operating and accountability procedures, and …

The Blandin Foundation: The Journey To A Theory Of Philanthropy, Kathy Annette, Wade Fauth, Allison Ahcan

The Foundation Review

The Blandin Foundation, located in Grand Rapids, Minn., is one of the few foundations focused on rural communities.

The foundation’s trustees commissioned the senior leadership team in 2007 to undertake serious, sustained, and annual assessments of the foundation’s work and impact. The first assessments focused on the ways in which they were delivering on the strategic plan, observations about impact, and potential adjustments.

After focusing on strategies, foundation leadership asked themselves what their theory of change was. This question led to a deeper process of exploring why and how they do their work, eventually leading them to a theory of …

Influences Of Venture Philanthropy On Nonprofits’ Funding: The Current State Of Practices, Challenges, And Lessons, Tamaki Onishi

The Foundation Review

This article looks at the current state of venture philanthropy practices in the nonprofit sector, based on data from a survey of 124 nonprofits that engage in venture philanthropy.

The survey probes to what degree nonprofit funders are implementing core activities of venture philanthropy – use of market-based funding instruments, providing strategic assistance, board participation, and use of social and financial performance criteria.

Seven venture philanthropy organizations were also interviewed for this article. Various tactics they have used to mitigate internal and external tensions are examined, including complying with diverse interests to balance conflicting views if internal tension is moderate …

Place-Based Initiatives: Lessons From Five Decades Of Experimentation And Experience, James M. Ferris, Elwood Hopkins

The Foundation Review

This article summarizes the findings from a yearlong inquiry into the state of place-based initiatives, underscores the lessons learned, and develops implications for foundation practice.

Place-based approaches have matured in response to five decades of historical change. In more recent years, a new framework for such initiatives has emerged that views place as an open system where neighborhoods are aligned with larger areas and influenced by market forces and public policy. Consequently, place-based initiatives targeted to a specific neighborhood are only part of any solution.

Seven key lessons emerged from this inquiry that animate a renewed sense of the possible …

When Backbone Organizations Become The Funder: The Use Of Fiscal Intermediaries In The Context Of Collective Impact, Jewlya Lynn, Kirsten Breckinridge, Ashley Denault, Chris Marvin

The Foundation Review

Intermediary organizations are increasingly being engaged to work with grantees in the context of collective impact and similar collaborative approaches that aim to solve significant societal problems. At times the backbone organization – the group providing support to the collective effort – takes on the work of a fiscal intermediary. This dual role has two distinct functions: engagement of collaborative partners to advance a shared agenda, and distributing funds while holding those partners accountable.

This article explores the complexities of the dual relationship by using examples from the Social Innovation Fund, a White House initiative, and Got Your 6, a …

Understanding Collective Impact In A Rural Funding Collaborative: Collective Grantmaking In Appalachian Ohio, Judith Millesen

The Foundation Review

This article documents the history and work of the Appalachian Ohio Funders Group, a ninemember regional grantmaking collaborative committed to strategically enhancing the region’s assets through leadership, networking, financial and in-kind investments, leveraged resources, and collaboration.

The work of the collaborative is positioned within the broader context of recent publications examining funder collaboratives, networks, and collective impact as ways to address social problems, achieve economies of scale, and inspire innovation. Specific attention is given to what makes the collaborative unique – namely, the organizational diversity of the funding partners, the lack of a shared issue area, and the fluidity of …

Creating Choices Before Making Choices: One Family Foundation’S Journey To Finding A Strategic Focus, Kelly C. Medinger, Angela R. Logan

The Foundation Review

Rooted in business principles, philanthropic study, and reflective practice, this article examines the journey of the Marion I. & Henry J. Knott Foundation, a small family foundation established in 1977, toward a strategic grantmaking focus.

This article examines a foundation’s first step toward building a grantmaking strategy – finding an issue or problem to address – alongside a three-part model for creating choices that reflect donor intent, organizational talents and resources, and broader community needs.

The study adds to the body of knowledge about the value, process, and challenges of finding a strategic grantmaking focus, whether that focus is for …

Chinese Tallow Invasion In Maritime Forests: Understand Invasion Mechanism And Develop Ecologically-Based Management, Lauren Susan Pile

All Dissertations

Invasion by highly aggressive, non-native, invasive plants is a significant threat to management and conservation priorities as these plants can transform ecosystem functions and processes. In this study, I investigated the non-native, invasive tree, Chinese tallow (Triadica sebifera (L.) Small) in the maritime forests of Parris Island, South Carolina. I studied the role of land-use history and modern forest disturbance in facilitating the invasion of Chinese tallow. I found that stands previously cleared for agriculture and reforested with slash pine (Pinus elliottii Englem.) since the 1970s had significantly more Chinese tallow stems than stands that remained forested since …

Interacting Partners Of The Sunn Symbiotic Kinase, Ashley Dawn Zearfoss Crook

All Dissertations

The control of nodule number in legumes is primarily accomplished through a complex systemic signaling pathway termed autoregulation of nodulation (AON). The protein kinase SUNN, a leucine-rich repeat receptor-like kinase, exhibits shoot control of AON. I show subcellular localization of SUNN to the plasma membrane and specifically to the plasmodesmata, a prime location for systemic signaling. To aid in better understanding the mechanisms of signaling in AON, I used different approaches to identify potential protein-protein interactions involving SUNN, including candidate genes, exploratory proteomics, and forward genetic screens. Candidate interactors, including CLAVATA2 (CLV2), CORYNE (CRN) and guanine exchange factors of the …

Robust Modeling Framework For Transportation Infrastructure System Protection Under Uncertainty, Jie Lu

All Dissertations

This dissertation presents a modelling framework that will be useful for decision makers at federal and state levels to establish efficient resource allocation schemes to transportation infrastructures on both strategic and tactical levels. In particular, at the upper level, the highway road network carries traffic flows that rely on the performance of individual bridge infrastructure which is optimized through robust design at lower level. A system optimization model is developed to allocate resources to infrastructure systems considering traffic impact, which aims to reduce infrastructure rehabilitation cost, long term economic cost including travel delays due to realization of future natural disasters …

Filtering Impulses In Dynamic Noise In The Presence Of Large Measurement Noise, Jungphil Kwon

All Dissertations

This work considers the problem of filtering a system in which the dynamic noise occasionally has an impulse value that is an order of magnitude or more larger than its typical expected distribu-tion. This is particularly challenging when the ratio of measurement noise to typical dynamic noise is large enough that the impulse dynamic noise cannot be easily distinguished from a large random occurrence of measurement noise. A new filter model is proposed using a multiple model approach in which one of the models is an impulse. The implementation of the model is demonstrated in a Kalman filter framework. Simulation …

Creating Arguments Using A Multiliteracies Approach: A Formative Experiment, Emily Howell

All Dissertations

This dissertation study addresses the New London Group’s (1996) concern that technology and globalization require an expanded concept of literacy that focuses upon the multimodal nature of communication. This study combined a formative experiment with multiple-case-study methods to understand the pedagogical implications of implementing an intervention based upon the multiliteracies perspective (New London Group, 1996), a perspective that remains theoretical in application. This study sought to implement this perspective in a ninth- and a tenth-grade English class in a rural school district and develop assertions that further the localized, pedagogical understanding and application of the present study’s intervention (Gravemeijer & …

Arsenic Inhibits P19 Stem Cell Differentiation By Altering Microrna Expression And Repressing The Sonic Hedgehog Signaling Pathway, Jui Tung Liu

All Dissertations

Arsenic is a naturally-occurring toxicant that exists in bedrock and can be leached into ground water. Humans can be exposed to arsenic via contaminated drinking water, fruit, rice or crops. Epidemiological studies have shown that arsenic is a developmental toxicant, and in utero exposure reduces IQ scores, verbal learning ability, decreases long term memory, and increases the likelihood of dying from a neurological disorder. Arsenic can also reduce birth weight, weight gain, and muscle function after an in utero exposure. Although the mechanism behind these physiological changes is not known, in vitro studies have shown that arsenic can reduce muscle …

Nutrition Education For Children Attending Preschool (Necap), Ibtehal Alsallaiy

All Dissertations

There is a need to educate children as young as 3-5 years old about nutrition. It is at this age when children start to develop their preferences for certain foods. The purpose of this research study was to; explore the perceptions, preferences, and dietary intake of the main food groups in preschool children, explore the availability, choices, and preparation of the main food groups by the care providers, design and present a nutrition education program to the children and their care providers. The average consumption of fruits during breakfast and lunch prior to the program was 51.6 %, 59.3 % …