Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons™

Open Access. Powered by Scholars. Published by Universities.®

2022

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 15571 - 15600 of 18312

Full-Text Articles in Physical Sciences and Mathematics

The Implementation Of Advanced Digitalization In The Oil And Gas Industry, Ensieh Rezafar Jan 2022

The Implementation Of Advanced Digitalization In The Oil And Gas Industry, Ensieh Rezafar

Walden Dissertations and Doctoral Studies

AbstractThe immature advanced digitalization in the oil and gas industry can limit access to the potential value of mature progressive digitalization. Oil and gas leaders must expedite the implementation of advanced digitalization to increase organizational proficiencies and reduce costs and losses. Grounded in Pettigrew and Whipp’s dimensions of strategic change theory, the purpose of this qualitative multiple case study was to explore strategies some leaders in the oil and gas industry used to implement advanced digitalization. The participants were seven leaders in two oil service companies in North America involved in the successful implementation of progressive digitalization. Data were collected …

Go to article

Policy Sustainability Issues: Case Study Of Cassava Farmers In Ikorodu. Lagos, Nigeria, Medinat Oluwatoyin Adetunji Jan 2022

Policy Sustainability Issues: Case Study Of Cassava Farmers In Ikorodu. Lagos, Nigeria, Medinat Oluwatoyin Adetunji

Walden Dissertations and Doctoral Studies

The inconsistency and lack of continuity of Nigeria's agricultural policies impact the cassava sector. Despite being the world's biggest producer, the country is yet to benefit from the advantage due to a lack of sustainable growth. The situation manifests in terms of low productivity, low production level, and poor income to the farmers. The purpose of this qualitative study was to investigate the experiences and perceptions of the cassava farmers on cassava policies and the effect on their income and livelihoods in the Ikorodu local government of Lagos State. This qualitative study adopted a case study research design using participatory …

Go to article

Length Of Stay In A Homeless Shelter And Mitigating Homelessness, Uwemedimo S. Etteyit Jan 2022

Length Of Stay In A Homeless Shelter And Mitigating Homelessness, Uwemedimo S. Etteyit

Walden Dissertations and Doctoral Studies

AbstractHomelessness is a major public health issue in the United States. Every night, thousands of people have no residence to call their own. Most homeless persons turn to homeless shelters for help. Despite the homeless shelters, the problem of homelessness persists. This study examined the concept that the length of time spent at a homeless shelter is related to the homeless persons mitigating their homelessness through home placement, jobs, and healthcare access. Homelessness was examined using the socioecological model with its attendant levels of influence. On the intrapersonal level, socioeconomic status, education, old age, veteran status, and disability were factors. …

Go to article

Examination Of Strategies To Implementing Chip-And-Personal Identification Number Credit Card Authentication Infrastructures, Neville Arthur Gallimore Jan 2022

Examination Of Strategies To Implementing Chip-And-Personal Identification Number Credit Card Authentication Infrastructures, Neville Arthur Gallimore

Walden Dissertations and Doctoral Studies

Chip-and-Personal Identification Number (PIN) technology is seen as a game changer in many e-commerce industries and a transformational technology in the 21st century. However, security concerns have made chip-and-PIN adoption relatively slow. Massive unauthorized card payment transactions in the United States (U.S.) cost victims an estimate totaling billions of dollars. Information Technology (IT) managers are concerned with credit card fraud's financial loss and liability cost. Grounded in Rogers’s diffusion of innovation theory, the purpose of this qualitative pragmatic study was to explore strategies used by IT managers to transition their e-commerce organizations to chip-and-PIN credit card authentication infrastructures. The participants …

Go to article

Relationship Between Information System Success Model Dimensions And Electronic Health Records Use, Gloria Oshegbo Jan 2022

Relationship Between Information System Success Model Dimensions And Electronic Health Records Use, Gloria Oshegbo

Walden Dissertations and Doctoral Studies

The rise in the use of electronic health records (EHRs) in health care facilities necessitates a standardized tool for evaluating their effectiveness. Delone and McLean’s information system success model (ISSM) was the theoretical foundation, which consists of seven dimensions namely system, information, service qualities, user satisfaction, use, system usefulness, and net benefits. The purpose of this study was to examine EHRs’ efficiency and identify ISSM dimensions that influenced net benefits, the dependent variable. The research questions examined the relationship between dimensions of ISSM and the dimensions that affect net benefits. Participants were recruited using purposeful sampling via social media and …

Go to article

Digital Strategies To Improve The Performance Of Pharmaceutical Supply Chains, Manish Shashi Jan 2022

Digital Strategies To Improve The Performance Of Pharmaceutical Supply Chains, Manish Shashi

Walden Dissertations and Doctoral Studies

Some supply chain managers at pharmaceutical companies lack strategies to digitalize integrated supply chain systems impacting their profitability. Digitalized supply chain management in a pharmaceutical company can help reduce operation costs, improve assets, enhance shareholders’ value, positively respond to customer demand, and generate profits. Guided by the theory of constraints, the purpose of this qualitative multiple case study was to explore strategies some pharmaceutical managers use to digitalize integrated supply chain systems to increase their profitability. The participants were five managers from four pharmaceutical companies in New Jersey with strategies to digitalize their integrated supply chain systems. Data collection included …

Go to article

The Impact Of Funding On Organizational Sustainability Of Mental Health Nonprofits In The County Of Orange, California, Sophia E. Valdez Jan 2022

The Impact Of Funding On Organizational Sustainability Of Mental Health Nonprofits In The County Of Orange, California, Sophia E. Valdez

Walden Dissertations and Doctoral Studies

There is a gap in literature regarding sustainment of mental health programs following budget reductions. Customarily, decreases in budgets have been presumed to be connected to decreases in sustainability. The purpose of this quantitative correlational study was to describe the impact that a decrease in Proposition 63 funding had on nonprofit sustainability in the County of Orange, California. In 2004, California lawmakers enacted Prop 63 to revitalize the public mental health system. The Consolidated Framework for Implementation Research was used as the conceptual framework for this study. This tool can be used to measure data in five categories; intervention, inner …

Go to article

Enterprise Resource Planning Implementation Strategies In Small- And Medium-Sized Manufacturing Enterprises, Tatianna Gilliam Jan 2022

Enterprise Resource Planning Implementation Strategies In Small- And Medium-Sized Manufacturing Enterprises, Tatianna Gilliam

Walden Dissertations and Doctoral Studies

The difficulty SME leaders of manufacturing firms experience in the executing of enterprise resource planning (ERP) systems threatens the longevity of innovative change within firms seeking to adopt ERP systems. Grounded in the diffusion of innovation theory, the purpose of this multiple case study was to examine critical success factors used to successfully implement ERP systems. The participants were four ERP business leaders of small to medium size manufacturing firms based on the east and west coasts of the United States. Data were collected using semistructured online interviews and a review of company documents. Through thematic analysis, five themes were …

Go to article

Administrative Leaders’ Experiences With Information Communication Technology Platforms And Best Practices In Smart Schools, Byron B. Jackson Jan 2022

Administrative Leaders’ Experiences With Information Communication Technology Platforms And Best Practices In Smart Schools, Byron B. Jackson

Walden Dissertations and Doctoral Studies

Administrative leaders in traditional schools have failed to manage resources, implement best practices, and successfully integrate information communication technology (ICT) platforms into K-12 programs. The purpose of this qualitative, transcendental phenomenological study was to explore and discover the lived experiences of administrative leaders who have been successful in their integration of ICT platforms and best practices in K-12 smart schools. This study was framed by two concepts: (a) building digital capacity in smart schools and (b) ICT platforms integration in smart schools. Both concepts were theoretically grounded in social cognitive theory and system theory. Data were collected in semi structured …

Go to article

Improving Racial Diversity In The Americorps Saint Louis Emergency Response Team (Ert), Michael Mclemore Jan 2022

Improving Racial Diversity In The Americorps Saint Louis Emergency Response Team (Ert), Michael Mclemore

Walden Dissertations and Doctoral Studies

There is currently a significant lack of racial diversity in the fields of environmental conservation and emergency management. The purpose of this qualitative study was to identify sustainable recommendations to address the lack of racial diversity amongst members of the AmeriCorps Saint Louis Emergency Response Team (ERT). Trend analysis of the racial makeup of past ERT memberships identified a far less diverse ERT in its earlier cohorts, while illustrating improved racial diversity over the past 10 years. As a result of interviews with ERT administrators, alumni, team leaders, and current members recommendations were identified that aim to sustainably increase African …

Go to article

Strategies For Developing Sustainable Supply Chain Links With Local Producers, Edwin Che Ngwa Jan 2022

Strategies For Developing Sustainable Supply Chain Links With Local Producers, Edwin Che Ngwa

Walden Dissertations and Doctoral Studies

Failure to sustain agriculture supply chain links with local producers may lead to supply chain disruptions affecting the flow of products and materials. Successful strategies are essential for agribusiness supply chain managers to maintain profitability. Grounded in the value-based supply chain model, the purpose of this qualitative multiple case study was to explore strategies agribusiness managers used to develop sustainable supply chain links with local producers to maintain profitability. Semistructured online interviews were conducted with six Cameroon agribusiness managers who developed sustainable supply chain links with local producers for more than 5 years. Data analysis of the interviews and administrative …

Go to article

Strategies For Small-And Medium-Sized Business Growth And Survival, Abiodun Nestamanuel Ogunmuyiwa Jan 2022

Strategies For Small-And Medium-Sized Business Growth And Survival, Abiodun Nestamanuel Ogunmuyiwa

Walden Dissertations and Doctoral Studies

In the United States, approximately 50% of small businesses fail within the first five years (Small Business Administration, 2018b). Small and medium sized enterprises (SMEs) owners and managers would benefit from strategies to identify and mitigate constraints to sustain their business beyond the first five years of business operation. Grounded in the system theory framework, the purpose of this qualitative multiple case study was to explore strategies leaders of small and medium sized enterprises (SMEs) in Austin, Texas, used to grow and sustain their business’s operations beyond five years. The participants were five small and medium sized businesses owners in …

Go to article

Strategies For Cryptocurrency Adoption In Contemporary Businesses, Jacqueline Rodriguez Jan 2022

Strategies For Cryptocurrency Adoption In Contemporary Businesses, Jacqueline Rodriguez

Walden Dissertations and Doctoral Studies

Millions of Bitcoin transactions occur daily, worth nearly $2 billion annually. With the proliferation of cryptocurrency markets, the reluctance to adopt the currency as an alternate payment method could cause businesses to forgo growth opportunities within this expanding market. Grounded in the diffusion of innovation theory, the purpose of this qualitative multiple-case study was to explore strategies business leaders use to respond to the alternative payment concerns perpetuated by cryptocurrency markets. The participants comprised 6 business leaders who effectively employed cryptocurrency adoption strategies. Data were collected through semistructured interviews, corporate documents, and other company social media resources. Thematic analysis of …

Go to article

Strategies For Catalyzing Supply Chain Innovation In Midsized Manufacturing Firms, Matthew J. Szukalowski Iii Jan 2022

Strategies For Catalyzing Supply Chain Innovation In Midsized Manufacturing Firms, Matthew J. Szukalowski Iii

Walden Dissertations and Doctoral Studies

Supply chain inflexibility results in reduced efficiency and profitability. Without supply chain flexibility, supply chain managers in manufacturing firms risk the loss of competitive advantage due to reduced efficiency and profitability. Grounded in business process engineering conceptual framework, the purpose of this qualitative multiple case study was to explore strategies supply chain leaders in manufacturing organizations use to achieve supply chain flexibility. The participants were five supply chain leaders in the manufacturing industry in the midwestern United States and successfully implemented innovative solutions to achieve supply chain flexibility. Data were collected using semistructured interviews and a review of company documents …

Go to article

Exploration Of Cybersecurity Managers’ Experiences Protecting Users’ Privacy, Emmanuel Abayomi Segun Jan 2022

Exploration Of Cybersecurity Managers’ Experiences Protecting Users’ Privacy, Emmanuel Abayomi Segun

Walden Dissertations and Doctoral Studies

The protection of individual privacy and personal data in cyberspace continues to be a problem. The research problem was that cybersecurity managers must constantly navigate between the adoption of new security laws, new applications, and the internet of things (IoT) to protect the privacy of individual users. The purpose of this descriptive phenomenological study was to explore the lived experiences of cybersecurity managers who have adopted new security laws, new applications, and the IoT to protect users’ privacy. The conceptual framework that grounded this study was protection motivation theory and cybersecurity awareness. Data were collected through telephone and web-based interviews …

Go to article

Increasing Nurse Leader Knowledge And Awareness Of Information And Communication Technologies, Cory Stephens Jan 2022

Increasing Nurse Leader Knowledge And Awareness Of Information And Communication Technologies, Cory Stephens

Walden Dissertations and Doctoral Studies

Due to the recent coronavirus disease (COVID-19) pandemic, rapid technological innovation and nursing practice transformation exposed a deepening divide in the knowledge and awareness of information and communication technologies (ICT) among nurses. This technological skills gap undermines the benefits of ICT to nursing practice such as increased nurse satisfaction, improved care quality, and reduced costs. Nurse leaders are positioned to promote the use of ICT among nurses but may suffer from the same knowledge deficit of ICT as their followers. Guided by Locsin’s technological competencies as caring in nursing theory, Staggers and Parks’ nurse-computer interaction framework, and Covell’s nursing intellectual …

Go to article

Strategies For Cybercrime Prevention In Information Technology Businesses, Sophfronia G. Tucker Jan 2022

Strategies For Cybercrime Prevention In Information Technology Businesses, Sophfronia G. Tucker

Walden Dissertations and Doctoral Studies

Cybercrime continues to be a devastating phenomenon, impacting individuals and businesses across the globe. Information technology (IT) businesses need solutions to defend and secure their data and networks from cyberattacks. Grounded in general systems theory and transformational leadership theory, the purpose of this qualitative multiple case study was to explore strategies IT business leaders use to protect their systems from a cyberattack. The participants included six IT business leaders with experience in cybersecurity or system security in the Midlands region of South Carolina. Data were collected using semistructured interviews and reviews of government standards documents; data were analyzed using thematic …

Go to article

Strategies Small-And Medium-Sized Enterprise Leaders Use For Sustainability Beyond 5 Years In Rivers State, Olawe Alaba Tula Jan 2022

Strategies Small-And Medium-Sized Enterprise Leaders Use For Sustainability Beyond 5 Years In Rivers State, Olawe Alaba Tula

Walden Dissertations and Doctoral Studies

Small and medium-sized enterprise (SME) leaders lacking sustainability strategies experience high rates of business failure through loss of profit. A high rate of SME failure is linked to a lack of competitive advantage, resulting in decreased productivity and profitability. Grounded in resource-based view theory, the purpose of this qualitative multiple case study was to explore strategies that three SME leaders in Rivers State used to sustain their businesses beyond 5 years. Data were collected from semistructured interviews and company documents, including employee handbooks and annual reports. The three themes that emerged through thematic analysis were strategic management, stakeholder management strategies, …

Go to article

Employee Training Strategies For New Technology Implementation In Small Business, Eddy Varela Jan 2022

Employee Training Strategies For New Technology Implementation In Small Business, Eddy Varela

Walden Dissertations and Doctoral Studies

Failure to implement new technology creates a barrier to success for small businesses. Small business owners must create competitive advantages by implementing new technology as there is a need to maintain an advantage when competing in the local market economy. Grounded in the human capital theory, the purpose of this qualitative multiple case study was to explore the employee training strategies small business owners use to implement new technology. The participants were five small business owners in Central Florida who used employee training strategies to implement new technologies Data were collected using (a) semistructured interviews, (b) member checking interviews, (c) …

Go to article

Strategies For Implementing Critical Success Factors For Improving Information Technology Information Systems’ Performance In Financial Organizations, Sherri L. Williams Jan 2022

Strategies For Implementing Critical Success Factors For Improving Information Technology Information Systems’ Performance In Financial Organizations, Sherri L. Williams

Walden Dissertations and Doctoral Studies

Information technology infrastructure library (ITIL) business leaders lack strategies for implementing critical success factors (CSFs) to promote organizational effectiveness and project success. As a result, ITIL leaders may experience less project success if CSF strategies are not effectively implemented. Grounded in the balanced scorecard (BSC) theory, this qualitative multiple case study aimed to explore strategies ITIL business leaders use to implement CSFs successfully to improve organizational efficiency for project success. The participants comprised five ITIL business leaders in the financial industry located in the southwestern region of the United States who successfully implemented strategies to implement CSFs to improve organizational …

Go to article

A Search For Analogs Of Kic 8462852 (Boyajian’S Star): A Second List Of Candidates, Edward G. Schmidt Jan 2022

A Search For Analogs Of Kic 8462852 (Boyajian’S Star): A Second List Of Candidates, Edward G. Schmidt

Edward Schmidt Publications

In data from the Kepler mission, the normal F3V star KIC 8462852 (Boyajian’s star) was observed to exhibit infrequent dips in brightness that have not been satisfactorily explained. A previous paper reported the first results of a search for other similar stars in a limited region of the sky around the Kepler field. This paper expands on that search to cover the entire sky between declinations of +22°and +68°. Fifteen new candidates with low rates of dipping, referred to as “slow dippers” in Paper I, have been identified. The dippers occupy a limited region of the HR diagram and an …

Go to article

Oxide Two-Dimensional Electron Gas With High Mobility At Room-Temperature, K. Eom, H. Paik, J. Seo, N. Campbell, E. Y. Tsymbal, S. H. Oh, M. Rzchowski, D. G. Schlom, C.-B. Eom Jan 2022

Oxide Two-Dimensional Electron Gas With High Mobility At Room-Temperature, K. Eom, H. Paik, J. Seo, N. Campbell, E. Y. Tsymbal, S. H. Oh, M. Rzchowski, D. G. Schlom, C.-B. Eom

Evgeny Tsymbal Publications

No abstract provided.

Go to article

Superfluid Spin Transistor, Edward Schwartz, Bo Li, Alexey Kovalev Jan 2022

Superfluid Spin Transistor, Edward Schwartz, Bo Li, Alexey Kovalev

Alexey Kovalev Papers

We propose to use the Hall response of topological defects, such as merons and antimerons, to spin currents in two-dimensional magnetic insulator with in-plane anisotropy for identification of the Berezinskii-Kosterlitz-Thouless (BKT) transition in a transistorlike geometry. Our numerical results relying on a combination of Monte Carlo and spin dynamics simulations show transition from spin superfluidity to conventional spin transport, accompanied by the universal jump of the spin stiffness and exponential growth of the transverse vorticity current. We propose a superfluid spin transistor in which the spin and vorticity currents are modulated by changes in density of free topological defects, e.g., …

Go to article

Cybersecurity In Fintech Companies, Efstratios Zouros Jan 2022

Cybersecurity In Fintech Companies, Efstratios Zouros

Cybersecurity Undergraduate Research Showcase

Have you recently accessed your bank account online? Have you accessed any financial instrument through your computer or your mobile device? If you are reading this, chances are you have. Every time you utilize those services, you ultimately put your trust in the financial institutions that offer them. You trust that they can securely keep your private information, while also keeping your savings safe. Ultimately, there is a certain dependability and trust in financial institutions that have been present on earth before most of us.

Go to article

The Future Of Blockchain, Elijah N. Gartrell Jan 2022

The Future Of Blockchain, Elijah N. Gartrell

Cybersecurity Undergraduate Research Showcase

Blockchain is the leading technology for cryptocurrencies, NFT’s and other online marketplace transactions that go through it because of it’s secure technology and how they distribute their data with Smart Contracts. This report shows how we can use Blockchain for other uses in our world and how it could advance us in the cybersecurity aspects. Showing also why we should use blockchain with basic cybersecurity concerns as in: Malware Detection, Voter Fraud, and Medical Record Security.

Go to article

Don’T Beep At Me: Using Google Maps Apis To Reduce Driving Anxiety, Daniel Chechelnitsky Jan 2022

Don’T Beep At Me: Using Google Maps Apis To Reduce Driving Anxiety, Daniel Chechelnitsky

Mathematics, Statistics, and Computer Science Honors Projects

Stress while driving is a significant issue that causes automobile incidents. Along with the physical injuries, there is often baggage and trauma associated with these accidents. Wearable health monitoring technology, like Smartwatches, has a real possibility to help people further understand the stress inducing processes of driving. Thus to help with this issue, I propose a Google Maps app extension called: "Don't Beep At Me". This project creates a map that is layered by heart rate instead of speed limit and has great potential to be useful for reducing driving anxiety.

Go to article

A Comparison Of Stacking Methods To Estimate Survival Using Residual Lifetime Data From Prevalent Cohort Studies, Zhaoheng Li Jan 2022

A Comparison Of Stacking Methods To Estimate Survival Using Residual Lifetime Data From Prevalent Cohort Studies, Zhaoheng Li

Mathematics, Statistics, and Computer Science Honors Projects

Prevalent cohort studies are widely used for their cost-efficiency and convenience. However, in such studies, only the residual lifetime can be observed. Traditionally, researchers rely on self-reported onset times to infer the underlying survival distribution, which may introduce additional bias that confounds downstream analysis. This study compares two stacking procedures and one mixture model approach that uses only residual lifetime data while leveraging the strengths of different estimators. Our simulation results show that the two stacked estimators outperform the nonparametric maximum likelihood estimator (NPMLE) and the mixture model, allowing robust and accurate estimations for underlying survival distributions.

Go to article

Land Is Life: Settler Colonial Governance Of National Parks And Hunting In Taiwan, Wei-Chieh Jarita Chen Jan 2022

Land Is Life: Settler Colonial Governance Of National Parks And Hunting In Taiwan, Wei-Chieh Jarita Chen

Environmental Studies Honors Projects

This thesis situates Taiwan as a settler colonial state by examining the discourse around the governance of national parks and the criminalization of Indigenous hunting. Placed in the context of historical patterns of land dispossession and cultural genocide, these two issues represent the ongoing process of settler colonialism and the reproduction of settler colonial relations through environmentalism. I focus on the narratives around three case studies: the controversial and ultimately unsuccessful campaign for the Maqaw National Park, the Tumpu Daingaz buluo’s struggle with the Yushan National Park, and the Tama Talum Indigenous hunting constitutional reinterpretation case. I argue that settler …

Go to article

“Abolition As Presence”: An East Bay Ca Case Study Of Black Food Geographies, Ayize James Jan 2022

“Abolition As Presence”: An East Bay Ca Case Study Of Black Food Geographies, Ayize James

Environmental Studies Honors Projects

Using abolitionist methodologies, the author argues that food activism contests “food deserts” by making food present in sources alternative to supermarkets. The project can be broken into two central inquiries: (1) How do race and class formations in the East Bay generate landscapes of food inaccess that are labeled “food deserts”? and (2) How does food activism in the East Bay generate lasting alternatives to supermarkets?, which is explored through three case studies of food justice organizing in the East Bay.

Go to article

Geomorphic Gradients In Shallow Seagrass Carbon Stocks, Jahson Berhane Alemu, Siti Maryam Yaakub, Erik S. Yando, Rachel Yu San Lau, Cheng Chang Lim, Jun Yu Puah, Daniel A. Friess Jan 2022

Geomorphic Gradients In Shallow Seagrass Carbon Stocks, Jahson Berhane Alemu, Siti Maryam Yaakub, Erik S. Yando, Rachel Yu San Lau, Cheng Chang Lim, Jun Yu Puah, Daniel A. Friess

Biological Sciences Faculty Publications

Seagrass meadows are important sinks of organic carbon (Corg), in particular the near-surface Corg pool (≤ 15 cm) compared to deeper sediments. Near-surface carbon is highly susceptible to disturbance and loss to the atmosphere, however, inadequate accounting for variability in this pool of carbon limits their uptake into carbon accounting frameworks. We therefore investigated the spatial variability in seagrass near-surface Corg and biomass Corg across different geomorphic (estuary, lagoonal and reef-associated) and community typologies (pioneer and persistent). Near-surface Corg stock in vegetated areas (25.78 Mg Corg ha−1 ± 26.64) was twice that …

Go to article

First Prev Next Last