The 50 most-cited articles in Journal of International Crisis and Risk Communication Research, 2020

\nWhat is the relationship between design, power, and social justice? “Design justice” is an approach to design that is led by marginalized communities and that aims expilcitly to challenge, rather than reproduce, structural inequalities. It has emerged from a growing community of designers in various fields who work closely with social movements and community-based organizations around the world.\n\nThis book explores the theory and practice of design justice, demonstrates how universalist design principles and practices erase certain groups of people—specifically, those who are intersectionally disadvantaged or multiply burdened under the matrix of domination (white supremacist heteropatriarchy, ableism, capitalism, and settler colonialism)—and invites readers to “build a better world, a world where many worlds fit; linked worlds of collective liberation and ecological sustainability.” Along the way, the book documents a multitude of real-world community-led design practices, each grounded in a particular social movement. Design Justice goes beyond recent calls for design for…

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This study assessed the Government of Puerto Rico’s crisis and emergency risk communications following Hurricane María and the post-disaster information environment to identify factors that may have contributed to negative public perceptions of mortality reports. Data included Government of Puerto Rico press releases, press conference audio recordings and Facebook Live transmissions, digital media news and social media commentary, and interviews with Government of Puerto Rico personnel and community stakeholders. Study findings indicate that inadequate crisis communication planning and training, coupled with information gaps and inconsistencies, contributed to rumors around the issue of mortality. As a consequence, the Government of Puerto Rico lost the ability to effectively manage messaging, thus decreasing their credibility, perceived transparency, and public trust. Recommendations regarding future preparedness activities and research are offered.

This study utilized social network analysis to identify the top 10 Twitter influentials during the Hurricane Irma crisis period and examined the relationship between social media attributes and the bridge influence of controlling information flow. The number of a user’s followers and tweets significantly predicted one’s control of information. Crisis information tended to be shared in scattered subgroups. Social network boundaries impeded information diffusion, and the communication pattern was largely one-way. The findings partially supported the opinion leader argument while indicating that influentials can directly generate information, which is consistent with the social-mediated crisis communication model. Such findings will contribute to crisis literature and help emergency management professionals advance social media usage to disseminate crisis information, build effective communication, and provide immediate disaster relief responses

Risk and crisis communication is a vibrant and growing area of research and practice. As we head into the third year of publishing the first journal dedicated to crisis and risk communication, the editor and editorial assistant pose some especially promising areas for future research. In this essay, we also introduce the articles published in this journal, including how they meet promising research gaps to fill.

Social and emotional factors are two main aspects of Social and Emotional Learning (SEL), which are also crucial in the development of L2 competence. Drawing examples from English as a second language (ESL) classrooms, this paper discusses how learners’ affective factors such as motivation, attitude, and anxiety (Henter, 2014) contribute to the L2 learning process through a social learning experience when learners engage in social interaction. Further examination of research findings from SEL classroom provides a thorough analysis of the lack of discussion on SEL in second language learning (SLL).

In a polarized society, organizations are increasingly forced to take sides on controversial corporate social responsibility (CSR) issues. In recent years organizations have been challenged for their wrongdoings, inactions, or misinterpretations of societal expectations, which have drawn questions about their CSR efforts. The current study draws upon expectation violation theory to examine how stakeholders’ expectations for an organization’s CSR efforts and their observed accountability for those CSR efforts influence two aspects of expectancy violations—violation importance and violation expectedness—while controlling for stakeholders’ perceived reputation of an organization and political ideologies. Survey findings indicate that stakeholders’ perceptions of an organization’s reputation and accountability indeed lead to favorable evaluations of an organization’s crisis response. Furthermore, the effect of stakeholders’ expectations for an organization’s CSR efforts is moderated by stakeholders political ideologies. These findings broaden expectation violation theory to include new…

Effective communication about medical countermeasures—including drugs, devices and biologics—is often critical in emergency situations. Such communication, however, does not just happen. It must be planned and prepared for. One mechanism to develop communication strategies is through the use of prospective scenarios, which allow readers the opportunity to rehearse responses while also weighing the implications of their actions. This article describes the development of such a scenario: The SPARS Pandemic 2025-2028. Steps in this process included deciding on a timeframe, identifying likely critical uncertainties, and then using this framework to construct a storyline covering both the response and recovery phases of a fictional emergency event. Lessons learned from the scenario development and how the scenario can be used to improve communication are also discussed.

In order to properly evaluate crises that occur in sports, scholars have previously called for a sports-specific crisis communication typology (Wilson, Stavros, & Westberg, 2010). Two studies were conducted to develop the resulting typology. Study 1 utilized a questionnaire to obtain a comprehensive list of sports-related crises that were later grouped into twelve crisis types and three unique clusters through the use of qualitative content analysis. Study 2 utilized a questionnaire completed by 282 college students to determine the levels of crisis responsibility attributed to each cluster of crises. The resulting typology provides the necessary foundation for crisis communication research that uses sports as a context by evaluating the level of organizational blame that exists when a crisis occurs.

Scholars have examined the ways organizations practice post-crisis communication strategies, including deny, diminish, and rebuild. The current study explores the extent to which a stakeholder-formed organization utilizes post-crisis discourse of renewal to rebuild, recover, and renew the Catholic Church after allegations of sexual abuse of minors publicly surfaced in the United States. Open-ended semi-structured interviews with founders and executive committee members of Leadership Roundtable revealed stakeholders practiced discourse of renewal to help the Catholic Church, an offending organization, recover from a crisis. This study also assessed the extent to which God and religion motivated stakeholders’ responses. Results suggest religion is a critical motivating factor in stakeholders’ responses to a crisis.

In 2014, a water crisis emerged in Flint, Michigan. Using uses and gratifications theory as the guiding framework, this study examines if crisis-related media uses, informational needs, and source preferences are related to respondents’ gender and/or whether or not respondents had children. A random sample of 208 Flint residents yielded results that are largely consistent with extant research, although minor nuances were found. Media uses, preferred informational sources, and desire to receive future crisis-related health information varied between women and men. Women reported significantly higher use of Facebook and Instagram. However, there were not significant differences between genders or respondents with/without children regarding their future informational needs about crisis-related health topics. Results are discussed in relation to extant research, theory, and praxis. Limitations and future research are also discussed.

Throughout history, men have responded to feminist progress with political backlash. Pre-internet men's groups used biological constructions of gender as a method of reinforcing patriarchal power by restricting the rights of women. Today, the same methods are used in a loose collection of men's rights groups online called 'the manosphere'. Within the manosphere, men who identify as involuntarily celibate (incels) blame women for their perceived loss of masculine power. Some incels have taken their anti-feminist backlash offline through acts of mass violence, suggesting an emergent need for social science research into the incel identity. This paper outlines the theoretical orientation of hegemonic masculinity then applies it to past men's movements and their extensions found online today. Data for this study was found on the public online forum, Incels.co, the forum's wiki page, and in news articles related to incels. A qualitative thematic analysis was conducted on 50 forum posts. Themes that emerged from forum data were compared to wiki entries and news articles to provide a…

With the ongoing COVID-19 pandemic, we are facing another watershed moment for our field. There truly could not be a better time to be editing an open-access journal for the international community of risk and crisis communication scholars and practitioners. In this essay, we provide an update on the Journal’s status in terms of acceptance rates, global perspective, and readership rates.

This exploratory study investigated the variables that predict academic writing difficulties (AWDs) among first-year doctoral students, international and domestic, at a large, publicly funded research university in Southeastern United States. Data were collected through an online survey. The final sample size contained 111 first - year students, domestic and international from various doctoral programs. The first analysis examined factors predicting first-year doctoral students' self-assessed writing difficulties, using Multiple Linear Regression. Five factors were statistically significant predictors of AWDs: Asian race, Colleges of Business, Engineering, and Science, and the age between fifty-five to sixty-four. The remaining factors associated with age, Race, or College were not statistically significant. The second analysis examined differences between domestic and international students using Multivariate analysis of variance (MANOVA) and Multivariate analysis of covariance (MANCOVA). The MANOVA results indicated statistically significant differences in the AWD and GRE writing…

Research in the field of Second Language Acquisition (SLA) generally falls within two categories: the cognitive/psycholinguistic camp, and the sociocultural camp (Fazel, 2014). These distinct approaches to empirical research in SLA have diverse epistemologies, methods, and implications for the second language classroom. Scholars within the sociocultural camp have made significant contributions to the field concerning social and emotional learning in the second language classroom. Concerning this, the current paper reviews recent developments in the field of developmental psychology and examines ways in which the new science of child development can inform SLA theory and practice in regard to social and emotional learning in the second language classroom. This paper reviews the two most common approaches to parenting that are recognized by developmental psychologists (Gopnik, 2016) and relates those conceptualizations to teaching in the second language classroom. Going further, developmental psychologists have identified four distinct types of play, and have investigated each in…

Mathematically, most of the interesting optimization problems can be formulated to optimize some objective function, subject to some equality and/or inequality constraints. This book introduces some classical and basic results of optimization theory, including nonlinear programming with Lagrange multiplier method, the Karush-Kuhn-Tucker method, Fritz John’s method, problems with convex or quasi-convex constraints, and linear programming with geometric method and simplex method. A slim book such as this which touches on major aspects of optimization theory will be very much needed for most readers. We present nonlinear programming, convex programming, and linear programming in a self-contained manner. This book is for a one-semester course for upper level undergraduate students or first/second year graduate students. It should also be useful for researchers working on many interdisciplinary areas other than optimization.

The emboldening of white supremacist groups, as well as their increased mainstream presence in online circles, necessitates the creation of studies that dissect their tactics and rhetoric, while offering platform-specific insights. This study seeks to address these needs by analyzing white supremacist content and framing devices on the video hosting website, YouTube. Data were collected through a multi-stage sampling technique, designed to capture a 'snapshot' of white supremacist content on the platform during a 45-day period in 2019. After line-by-line coding and qualitative thematic analysis, results showed that sampled channels varied between different levels of color-blindness and overt racialization in their framing. Furthermore, channels containing more color-blind approaches yielded higher subscriber counts than their counterparts. What this indicates is that sampled channels use framing to both activate racial threat and minimize race, attempting to reproduce racism while avoiding coming off as racist in the color-blind, mainstream political climate. Secondary findings also…

The study sought to understand the relationship between the type of state mandate for financial education and 18-24-year-olds' financial literacy and financial capability. Using extant data from national surveys about financial literacy and financial capability in 2015 and 2018, this study determined there was rarely a significant difference in young adults' financial literacy and financial capability as related to the level of financial education they received in high school. For 2015 literacy, the education mandate as a main effect within ethnicity was p = .025. Within certain demographic main effects, there were significant results. In 2015, ethnicity and educational attainment were each significant for financial literacy p = .000. In 2018, gender, ethnicity and educational attainment were each significant for financial literacy, p = .000, while income was significant p = .005. In 2015, ethnicity was significant for financial capability p = .001, while educational attainment and income were each p = .000. In 2018, gender was significant for financial capability p = .016, while…

There is abundant research about the benefits of SEL programs on social and emotional core competencies (e.g., increase in self-esteem, improvement of academic performance); however, general SEL programs are not necessarily designed with the English learners’ (ELs) needs in mind. Aiming at exploring valid and reliable SEL programs that meet the needs of the ELs, the article first examines the theoretical groundwork on which SEL is built upon. Next, this paper will first discuss Piaget’s, Vygotsky’s, and Dörnyei’s theories surrounding the cognitive, emotional, and sociocultural aspects involved in the learning process and language learning. It will then consider the needs for SEL programs adapted to the needs of English learners (e.g., cultural, linguistic, emotional). To conclude, this paper will propose a culturally and linguistically adapted SEL framework that would offer classroom practitioners, school administrators, and other instructional staff an adapted tool that can guide them when implementing SEL programs in settings with diverse student populations.

It is hard to overstate the importance of gesture-based interfaces in many applications nowadays. The adoption of such interfaces stems from the opportunities they create for incorporating natural and fluid user interactions. This highlights the importance of having gesture recognizers that are not only accurate but also easy to adopt. The ever-growing popularity of machine learning has prompted many application developers to integrate automatic methods of recognition into their products. On the one hand, deep learning often tops the list of the most powerful and robust recognizers. These methods have been consistently shown to outperform all other machine learning methods in a variety of tasks. On the other hand, deep networks can be overwhelming to use for a majority of developers, requiring a lot of tuning and tweaking to work as expected. Additionally, these networks are infamous for their requirement for large amounts of training data, further hampering their adoption in scenarios where labeled data is limited. In this dissertation, we aim to bridge the gap between the power of…

Names serve as important identifiers and carry with them hopes for a generation as well as pride in one’s culture. A name is often an extension of one’s culture or language and represents their identity. With the increasing student diversity across our nation, many students in our K-12 public schools may have uncommon or nontraditional names. Public school teachers, who are predominantly White, may find these names unfamiliar, difficult to pronounce or difficult to spell. Despite a name’s unfamiliarity, classroom teachers must have the knowledge and disposition to create a space that signals to a student that their name is respected. The purpose of this article is to share the significance of uncommon or nontraditional names and to provide classroom teachers with best practices for creating a safe and inclusive classroom which recognizes the value of a student’s name.

Cardiovascular disease is one of the leading causes of mortality in the world. Early detection and intervention can significantly improve disease management and patient quality of life. Current methods of evaluating cardiac function often involve history and physical examination (including stethoscope auscultation), electrocardiograms (ECG), echocardiogram imaging, computed tomography, and various blood tests. Seismocardiographic signals (SCG) are the chest surface vibrations resulting from cardiomechanical activity. SCG may be recorded using accelerometers and can be used for monitoring and predicting cardiac health. SCG's potential utility may be impeded by its spatial, postural, respiratory, and longitudinal variability. In this dissertation, the SCG variability sources are documented, resulting in changes in signal features are quantified, and optimum posture and sensor placement are discussed. Understanding SCG variability can help account for signal variability and more precise quantification of prominent SCG features that may be predictive of cardiac health. In addition,…

This project successfully created a living shoreline restoration prioritization model and a mangrove hydrodynamic habitat suitability model for 180 miles of estuarine shorelines in Mosquito Lagoon and northern Indian River. Shoreline model data are available for direct download as a spatial dataset (https://stars.library.ucf.edu/shorelines/), or for online viewing in a GIS storymap: (https://ucfonline.maps.arcgis.com/apps/MapSeries/index.html?appid=45caa29e80e6441c8bf6f75c542860af). New empirical wave data were created through hydrodynamic modeling. Frequency analysis was applied to characterize wave climate in study area shorelines. Wind-wave measurements observed in the field validated that actual wave heights above 2 cm were well represented by the model. Modelled hydrodynamic data were combined with shoreline data (collected in the field during the project Phase I) to develop fundamental knowledge regarding hydrodynamic habitat suitability of IRL shoreline species. Through this analysis, strong relationships between mangrove presence and wind wave hydrodynamics were illuminated,…

Four years after the passage of the Civil Rights Act of 1964, a group of Public Administration scholars met in New York's Adirondack Mountains to discuss the future of the field. At this gathering, the Minnowbrook I Conference, scholars acknowledged the need for social equity. Today, more than fifty years later, there is still a need for social equity. There is still a need to understand the history and role of oppression within Public Administration. Apropos, in this dissertation, I interrogate oppression, by way of postcolonialism and critical discourse analysis, to learn about the field's darkness and splendor. This project aims to help administrators reimagine a field and democracy for all. This dissertation is both an exercise in self-reflection and an invitation to become self-conscious about colonialism in our discourse. Explicitly, this project's central research question is: Does the American Public Administration Discourse (APAD) exhibit colonial discourse as a basis of power? Herein, discourse means a set of relationships between people, institutions, language, and…

In this dissertation, the operational map of a lean reacting jet-in-crossflow situation has been explored with Computational Fluid Dynamics (CFD) and an axially staged combustor experiment at pressure of five atmospheres to aid scaling to gas turbine engine conditions applied industrially. The optically accessible test section features three side windows, allowing in-house local flow and flame analysis with PIV and CH* chemiluminescence along with pressure, temperature and species measurements. The dissertation research revealed local formation of NOx emission and analyzed contribution of thermal NOx and prompt NOx pathways. The full GRI Mech 3.0 was computed with detailed chemistry and compared with models utilizing Flamelet chemistry or reduced methane mechanisms. Lean operating points with any 12.7mm or 4mm axial jet composition were characterized to be in the finite-rate regime. A nitrogen oxide benefit was proven at elevated operating pressures due to the transition from shear layer burning to jet core flame burning. Optimization of the axial fuel split to 25% utilized a lean…

This article argues for enacting a synthesis of English language teaching (ELT) and critical pedagogy into what we call critical multiliteracies pedagogy (CMP) in the context of ESL/EFL teaching. CMP challenges and expands language and literacy instruction beyond a skills-based pedagogy to be inclusive of diverse modes, voices, and identities to address critical issues across local, global, and transnational contexts in ESL/EFL classrooms. Particularly, we share how an international professional development program has promoted CMP for 20 Korean English teachers working with adolescent multilingual learners in South Korea. Findings show how participating teachers critically reframed their vision of ELT, enacting and envisioning new ways of teaching English through CMP despite challenges at the systemic level. Implications discuss how TESOL professionals can integrate CMP into diverse ELT contexts, responding to the call to uptake powerful new ways to communicate and create knowledge and ideas for a more just society.

The last three decades of board research has embarked on various aspects of school boards (Alsbury, 2008b; Delagardelle, 2008; Resnick & Bryant, 2010; Strauss, 2018) including characteristics of effective boards (Alsbury & Gore, 2015; Dervarics & O’Brien, 2016), importance of targeted school board trainings (Cook, 2014; Gann, 2015; Hess & Meeks, 2010; Plough, 2014; Pollard, 2012; Reimer, 2015; Weiss, Templeton, Thompson, & Tremont, 2014; Wilkins, 2015), boards and student achievement (Blasko, 2016; Brenner, Sullivan, & Dalton, 2002; Ikejiaku, 2000; Lorentzen, 2013; Peterson, 2000; Saatcioglu & Sargut, 2014; Shelton, 2010), board behaviors (Bradley, 2013; Choi, 2013; Gates, 2013; Gomez, 2013; Murray, 2013; Nava, 2013; Richter, 2013; Turley, 2013), and board professional development and grades (Gates, 2013; Lee & Eadens, 2014; Roberts & Sampson, 2011; Turley, 2013). Eadens, Schwanenberger, Clement, and Eadens (2015) found a positive relationship between participation in Arizona School Boards Association (ASBA) trainings and state rankings of school district performance/grades. The…

A model integrated meshless solver (MIMS) tailored to solve practical large-scale industrial problems is based on robust meshless methods strategies that integrate a native model-based point generation procedures. The MIMS approach fully exploits strengths of meshless methods to achieve automation, stability, and accuracy by blending meshless solution strategies based on a variety of shape functions to achieve stable and accurate iteration process that is integrated with a newly developed, highly adaptive model generation employing quaternary triangular surface discretization for the boundary, a binary-subdivision discretization for the interior, and a unique shadow layer discretization for near-boundary regions. Together, these discretization techniques provide directionally independent, automatic refinement of the underlying native problem model to generate accurate adaptive solutions without need for intermediate user intervention. By coupling the model generation with the solution process, MIMS addresses issues posed by ill-constructed geometric input and pathologies often…

In 2016, the University of Kentucky became embroiled in an open records debate with its student newspaper, The Kentucky Kernel. Following a professor’s resignation amid a sexual misconduct investigation, the Kernel asked for records pertaining to the case. The University refused, claiming the information would violate survivors’ privacy. The decision sparked public backlash, forcing the University to combat accusations that it was prioritizing reputation over student safety. This case study provides insight into the crisis management process by exploring how key actors in the case made decisions. Drawing from theoretical perspectives including stakeholder theory and the ethics of care and justice, this study explores the complexities of addressing incongruent stakeholder perspectives and balancing stakeholder interests, along with offering implications for public relations practitioners.

The genetic structure of juvenile green turtles (Chelonia mydas) foraging on the east coast of central Florida is not well understood, nor has it been examined over time. In the last three decades, the dramatic increase in the number of green sea turtle nests in Florida, in association with other population parameters, has led to this species being down-listed under the Endangered Species Act from “endangered” to “threatened” in the northwest Atlantic. However, it was unclear if the exponential growth in Florida nest numbers had any influence on the genetic structure of juveniles in nearby foraging aggregations. To understand this potential impact mixed-stock analysis was conducted using mitochondrial DNA fragments that were over 800 base pairs long on samples taken from juveniles captured from 2002-2005 and 2016-2018 in the central Indian River Lagoon and Trident Submarine Basin in Port Canaveral. Results indicate the sampled foraging sites are genetically distinct habitats. In both sites, recruitment from Florida nesting beaches remained low despite increases in nesting while…

The purpose of this ethnographic study was to examine the culture of students who are deaf and hard of hearing within the broader context of an inclusive high school, specifically as demonstrated though their learning experiences, socialization, and identity. The researcher gathered qualitative data in the form of observations, in-depth interviews, and participant video diary entries to gain insight into the shared cultural model of students who are deaf and hard of hearing. The data provided a holistic picture of cultural phenomena through the points of view of the subjects of the study. The description of the culture of this group of students may prove useful in shaping effective inclusive environments for students who are deaf and hard of hearing.

Copper (Cu) and Cu-alloy are good candidates for the engineered components that require good thermal and electrical conductivity. Since industry often needs sophisticated components that cannot be made easily by traditional methods, such as casting, forging and machining, research for additive manufacturing of copper-based alloy is on demand. Therefore, this thesis focuses on the optimization of laser powder bed fusion (LPBF) of Cu-10 wt.% Sn alloy and pure Cu based on their characteristics such as relative density/porosity, surface roughness, phase constitutes, melt pool dimension, and dendrite arm spacings dimension, determined by optical microscopy, X-ray diffraction and Scanning electron microscope. LPBF, also known as selective laser melting, was carried out for the Cu-10Sn alloy with varying parameters of laser power from 200W to 350W, laser scan speed from 100mm/s to 1000mm/s, hatch spacing from 0.06mm to 0.21mm, and slice thickness of 0.03mm. Relative density of 98% to 100% by Archimedes Principle and nearly 100% by image analysis were obtained for a large range of…

Boron carbide (B4C) is one of the most important opaque boride ceramics that has high hardness and Young's modulus that along with low density lead to a significant resistance to ballistic impact and, thus, B4C is broadly used as a protective material. B4C has also high neutron capturing cross section; therefore, it is used as control rods and neutron absorption shielding in nuclear reactors. In this work thermal, electrical and mechanical properties of dense B4C ceramics (99%) sintered using Spark Plasma Sintering (SPS) were investigated. The Young's modulus of B4C measured by three different techniques – IE, RUS, and nanoindentation showed a very good overlap in values, which ranges from 419.2 ± 47.3 GPa for nanoindentation to 458.7 GPa for RUS measurements at room temperature. The mean contact pressure-contact depth plots obtained from load-displacement nanoindentation data indicated pop-in events during loading and an "elbow" event during unloading, both of which are indicative of possible structural changes in B4C structure during nanoindentation. The appearance of "elbow"…

This case study used documents, observations, and questionnaires to explore nineteen participants’ perception and designs of contextualized vocabulary and grammar instruction. This study has the following major findings. First, although the analysis of the questionnaires revealed that participants had better perceptions in learning and teaching vocabulary in context, they struggled in designing authentic contexts during the co-planning process. Participants’ status, teaching experience, and hours of English instruction affected their perceptions. Secondly, there was a lack of coherence of tasks and clear directions on completing the tasks based on the authentic language contexts. A model on contextualized vocabulary and grammar instruction was proposed for English teachers’ lesson planning and activity designs.

Plume surface interactions (PSI) are caused by rocket exhaust impinging on planetary surfaces. PSI-induced environmental changes pose hazards to spacecraft and astronauts; thus, it is crucial to understand the gas-particle dynamics of these systems. We have conducted novel experimental and computational work to study PSI effects in relevant vacuum microgravity environments. To study flow effects and regolith instability we developed a computational model that describes the gas flow through a porous medium based on Darcy's Law. This flow depends on regolith properties, and the resulting subsurface pressure distribution is used to estimate ejecta mass. We find flow behaviors and the resulting ejecta are significantly affected by the surface pressure distribution, pulse duration, and material properties. We have also developed an experimental apparatus, the Gas Regolith Interaction Testbed (GRIT), for studying PSI in vacuum microgravity in the UCF Center for Microgravity Research Drop Tower. It consists of a small, cylindrical vacuum chamber in which a cold gas jet interacts with a bed…

Social networking sites have become popular communication tools to make connections and maintain interpersonal relationships, especially for long-disance romantic relationship. Given the popularity of this new communicative platform, this study aims at updating their pattern in terms of their benefits in maintenance romantic relationships among college students. 133 students were recruited to assess their maintenance behaviors through their uses of computer-mediated communication and some traditional communicative channels as well as their uncertainty level. This results reveal that long-distance romantic relationship partners use computer-mediated communication tools such as texting, direct messaging, Snapchat, and others more frequently than partners in geographically close relationships. In addition, this study finds that relationship maintenance performed on social media sites and face-to-face associate with relationship uncertainty. This study offers a new way to look at social networking sites as the maintenance behaviors for long-distance romantic relationship partners by…

This qualitative survey study explored the interrelationship between hope as defined by Hope Theory (HT) and social emotional learning (SEL). Participants (N=161) were teachers and counselors in training (TCT) learning to work with English learners (ELs) in K-12 settings. Participants' perspectives of hope, strategies and future plans to integrate hope into the classroom were explored. Findings indicated that TCT in training have some knowledge of hope. Participants’ knowledge was limited in applications of hope in the classroom. There is a need for increased training of SEL and HT to prepare TCT to work with ELs and all students to support academic, social and emotional development.

A big challenge in blockchain and cryptocurrency is securing the private key from potential hackers. Nobody can rollback a transaction made with a stolen key once the network confirms it. The technical solution to protect private keys is the cryptocurrency wallet, software, hardware, or a combination to manage the keys. In this dissertation, we try to investigate the significant challenges in existing cryptocurrency wallets and propose innovative solutions. Firstly, almost all cryptocurrency wallets suffer from the lack of a secure and convenient backup and recovery process. We offer a new cryptographic scheme to securely back up a hardware wallet relying on the side-channel human visual verification on the hardware wallet. Another practical mechanism to protect the funds is splitting the money between two wallets with small and large amounts. We propose a new scheme to create hierarchical wallets that we call deterministic sub-wallet to achieve this goal. The user can send funds from the wallet with a large amount to a smaller one in a secure way. We propose a multilayered…

The next generation of nuclear reactors (Generation IV) are specified to use graphite as the choice material for neutron moderation and structural components. For this reason, study of diffusion behavior of the fission product, ruthenium (Ru), in the candidate graphite grades, POCO AXF-5Q & ZXF-5Q, IG-110, NBG-18 and PCEA, is necessary. Diffusion data for Ru in these grades is absent due to the lack of prior studies and this work aims to fill this void and begin the study of this metallic fission product's diffusion behavior. By utilizing physical vapor deposition (PVD), dynamic secondary ion mass spectroscopy (SIMS), and the thin film solution to the diffusion equation coupled with a short circuit diffusion correction term, the diffusivities and Arrhenius temperature dependence are determined in the range of 500-1000°C and reported for the first time. Diffusion of Ru in this range is slow, with both lower activation energies and diffusion coefficients than other metallic fission products. Simulations of Ru diffusion on a graphene plane give activation energies similar to those…

The purpose of the study was to explore what types of digital content cultural institutions implemented during COVID-19 temporary closures and their effects on social media engagement. Existing research identified the role of digital content and social media in cultural institutions, but only in times of normal operations. The study adds to the existing literature by exploring types of digital content implemented, impacts on social media engagement, measures of social media engagement, and future implications in regard to COVID-19 temporary closures. The study recruited 16 cultural institutions from across the United States to take part in in-depth semi-structured phone interviews to fulfill the research goals. Museums, zoos, aquariums, performing arts organizations, heritage foundations, and historical societies were represented. The results indicated that cultural institutions implemented digital content to build communities through live and serialized content, partnerships, fundraising, increased transparency, and increased accessibility during temporary closures. Using primarily…

The Tensions of Strategic Communication Decision-Making (TSCD) is introduced as an applied theory describing the way decision-makers experience a risk or crisis and prioritize their strategic communication responses to maintain positive relationships with their publics. Relational Dialectics Theory is applied to illustrate how tensions between organizations and publics influence communication decisions. The strategic messages used by the World Health Organization regarding the Zika virus mega-crisis provide a backdrop illustrating how TSCD is enacted. Theoretical and practical implications for decision-making suggest that TSCD contributes to a more robust understanding of how the changing context in a crisis prompts the prioritization of strategic messages.

Anthropomorphism is the term for our tendency to give human characteristics to animals or non-living things. Many of us might recall it from our high school English classes, but there is a psychological basis for our use of anthropomorphism, as well.

The primary purpose of this integrative review of the literature is to describe healthcare provider’s recognition of anosognosia in individuals with comorbid mental health disorders, as a differentiating diagnosis needing preeminent early intervention. The secondary purpose is to examine how anosognosia influences outcomes in the population of individuals with severe mental illness. It is expected that early recognition by clinicians and implementation of additional interventions to address anosognosia as the most influential comorbidity of schizophrenia, will decrease exacerbations and improve treatment and patient outcomes. A literature review exploring clinician’s acknowledgement of anosognosia was performed using various databases. Search terms included: Anosognosia, Lack of Insight, Denial of Illness, and Schizophrenia. The data was conformed into tables and synthesized the relationships to identify consistent findings as well as gaps in the current literature. Initial review of the articles retrieved 73 articles relevant to the topic and 18 articles that met inclusion…

Glyphosate is a broad-spectrum herbicide that is used globally to combat the spread of weeds among crops. Not all countries around the world have been using the herbicide. For example, island countries such as Dominica and St. Kitts and Nevis do not use the herbicide on their crops. However, St. Kitts and Nevis imports food and other agricultural products from around the world, leading to the hypothesis that glyphosate is contaminating the soil through those imported products. The aim of this research project was to determine if glyphosate is present in the island country of St. Kitts and Nevis. A field test that will provide a rapid yes/no indication of the presence of glyphosate in sand samples on the islands and in food samples entering St. Kitts and Nevis was developed. Various models of contamination were studied, and a model experiment was set up a simulate possible contamination scenario. A model experiment was conducted simulating rainwater washing glyphosate from food scraps into the surrounding area. Tomatoes were chosen to simulate the food scraps and were tested for…

Student success is one of the widely discussed topics in post-secondary institutions and is measured in terms of the graduation and retention rates of programs. The goal of an educational institution is to achieve maximum student success and, hence, high graduation and retention rates. There are multiple studies on factors affecting student success. One of the factors that contributes to student success is the "program curriculum." Unfortunately, the traditional program curricula at many higher education institutions were developed with a belief or assumption that all students possess equal expertise, skills, and follow a similar learning path. The traditional curricular development process neglects some specifics related to the characteristics of transfer and the First Time In College (FTIC) students and their time to graduation. The purpose of this research was to explore the relationship between the traditional program curricula and student degree mobility patterns to measure student success of transfer and FTIC students enrolled in Computer Science, Information Technology, and…

Shock tubes are considered ideal reactors and are used extensively to provide valuable chemical kinetic measurements, such as ignition delay times and in-situ species time-histories. However, due to nonideal affects the combustion of fuel inside shock tubes can become nonhomogeneous, particularly at low temperatures, which complicates the acquired data. In this work, the combustion of practical fuels used by society are investigated with high-speed imaging. First, high-speed images were captured through the end wall of the shock tube for two hydrogen-oxygen systems. The combustion process was found to initiate in two modes, one that is homogeneous across the fluid medium and one that proceeds through a deflagration to detonation channel. In the second part of this work, the shock tube test section was redesigned to promote optical access from the end and side walls of the shock tube test section. Two high-speed cameras were used to capture perpendicular views of the combustion of isooctane and n-heptane, two primary reference fuels. A homogeneous and nonhomogeneous combustion…

Mini-LED and micro-LED are emerging disruptive display technologies, because they can work as local dimmable backlight to significantly enhance the dynamic range of conventional LCDs, or as sunlight readable emissive displays. However, there are still unresolved issues impairing their display fidelity: 1) motion blur on high-resolution, large-size and high-luminance devices, 2) limited contrast ratio on mini-LED backlit LCD (mLED-LCD), 3) relatively high power consumption, and 4) compromised ambient contrast ratio. This dissertation tackles with each of these issues for achieving high display fidelity. Motion blur is caused by slow liquid crystal response time and image update delays. Low-duty ratio operation can suppress motion blur in emissive displays. However, it induces driving burdens on high-resolution, large-size and high-luminance mLED-LCD panel electronics and demands fast-response liquid crystals. In order to overcome these challenges, in Chapter 2, we propose a novel image-corrected segmented progressive emission method for mitigating the motion blur of mLED-LCDs. In…

An increase in the demand for electrical power and tremendous growth of renewable energy sources has been seen in the last decade, which resulted in designing the wind turbine system components for higher load point performance, resulting in higher annual energy production. Cost optimization, weight reduction, and lower non-conformance cost are some of the expectations that the wind turbine needs to meet in the present stringent market condition. Overheating of the wind turbine system components is one of the primary challenges to overcome when the system operates at a higher load point. The overheating issue of the wind turbine generator system is the subject of this research. Windings and bearings are two primary components susceptible to failure in the wind turbine generator. Overheating accelerates the generator windings and bearings failure. A detailed investigation has been done on the air to the air-cooled generator in a test wind turbine in Europe. A unique cooling design has been proposed. The temperature rise in the test generator with a new cooling design found to be…

The contact mechanics of structures with exoskeletal components deviate significantly from classical Hertzian and non-linear models. In the case of fish scale inspired samples under blunt indentation loading these factors are inherently tied to both the size of the indenter and the scales' distribution and orientation. Control of these geometric parameters provides a pathway to tailor the properties of surfaces for better grip, damage mitigation and controlled deformation. This study explores the response of a substrate with stiff scales protruding from its surface, which is comprised of a soft elastomeric material with properties typical of those in soft robotics applications. It is found that the exoskeletal components amplify the nonlinearly of the system by artificially increasing the effective Hertzian contact area, which alters the contact stiffness and breaks the symmetry of the load across the surface. These effects are quantified using a combination of numerical modeling, finite element (FE) computation and experimental 3D Digital Image Correlation (DIC). While previous…