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Full-Text Articles in Physical Sciences and Mathematics

Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang Jan 2023

Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang

Walden Dissertations and Doctoral Studies

Algal blooms result in the formation of cyanotoxic conditions in a freshwater lake causing severe detrimental impacts to community and public health. Nitrogen, phosphorous, and ammonia stimulate the growth of phytoplankton biomass and algae, as measured by chlorophyll. This retrospective quantitative research study, grounded in the socioecological model, examined the relationship between nutrient pollutants and chlorophyll-a (Chl-a) that forecast harmful algal blooms, a precursor to cyanotoxins. A former impaired lake, Machado Lake in California, provided an ideal setting to assess relationships among nutrient indicators and Chl-a post-lake rehabilitation. Correlation and multiple regression analyses were performed to determine if a relationship …


Occupational Risk Perceptions Among Foreign-Born Construction Workers In Central Florida, Matthew Edison Law Jan 2023

Occupational Risk Perceptions Among Foreign-Born Construction Workers In Central Florida, Matthew Edison Law

Walden Dissertations and Doctoral Studies

Hispanic and Latino foreign-born construction workers in the United States experience higher rates of serious injuries and fatalities in the workplace than their native-born peers. Previous research has pointed to specific vulnerabilities among this population, including birthplace, age of the worker, language barriers, and education level, but little to no research has examined addressable risk factors, such as occupational risk perceptions, among this population. The purpose of this quantitative study was to determine the relationship between birthplace, number of years working in the United States, and occupational risk perceptions while controlling for age of the worker, language barriers, and education …


Sun Exposure And Protective Behaviors Among U.S. Hispanic Farmworkers, Claudia Marie Delgado Cebollero Jan 2023

Sun Exposure And Protective Behaviors Among U.S. Hispanic Farmworkers, Claudia Marie Delgado Cebollero

Walden Dissertations and Doctoral Studies

Sun exposure increases the risk of sun-related illnesses and skin cancer among U.S. Hispanic farmworkers. Reinforced by the health belief model, the purpose of this study was to determine the association between socio-demographic factors (i.e., age, educational attainment, gender, income, and marital status) and skin cancer with the level of sun exposure (sun’s effect on skin, sunburn reported) and protective behaviors (use of cap/visor, use of sunscreen) among adult Hispanic farmworkers in the United States. The study included Hispanic farmworkers aged 21 or older (N = 112) who responded to the 2015 National Health Interview Survey. Ordinal logistic regression showed …


Occupational Risk Perceptions Among Foreign-Born Construction Workers In Central Florida, Matthew Edison Law Jan 2023

Occupational Risk Perceptions Among Foreign-Born Construction Workers In Central Florida, Matthew Edison Law

Walden Dissertations and Doctoral Studies

Hispanic and Latino foreign-born construction workers in the United States experience higher rates of serious injuries and fatalities in the workplace than their native-born peers. Previous research has pointed to specific vulnerabilities among this population, including birthplace, age of the worker, language barriers, and education level, but little to no research has examined addressable risk factors, such as occupational risk perceptions, among this population. The purpose of this quantitative study was to determine the relationship between birthplace, number of years working in the United States, and occupational risk perceptions while controlling for age of the worker, language barriers, and education …


Laboratory Practices And Antimicrobial Resistance In A Florida Hospital, Crispina Marie Sy-Trias Jan 2023

Laboratory Practices And Antimicrobial Resistance In A Florida Hospital, Crispina Marie Sy-Trias

Walden Dissertations and Doctoral Studies

Antibiotic resistance is a health threat affecting millions of Americans. Microorganisms develop resistance to antibiotics, rendering them useless for treating infections. The purpose of this quantitative study was to assess the associations between sample processing time and antibiotic resistance and is based on the health belief model. A retrospective specimen tracking activity of data from November 2019 to November 2020 was obtained by random sampling of 246 bacterial cultures. One hundred ninety-six (80%) samples were processed on time, and 50 (20%) were delayed; 167 (68%) samples were determined to have the presence of antimicrobial resistance (AMR), and 79 (32%) with …


Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang Jan 2023

Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang

Walden Dissertations and Doctoral Studies

Algal blooms result in the formation of cyanotoxic conditions in a freshwater lake causing severe detrimental impacts to community and public health. Nitrogen, phosphorous, and ammonia stimulate the growth of phytoplankton biomass and algae, as measured by chlorophyll. This retrospective quantitative research study, grounded in the socioecological model, examined the relationship between nutrient pollutants and chlorophyll-a (Chl-a) that forecast harmful algal blooms, a precursor to cyanotoxins. A former impaired lake, Machado Lake in California, provided an ideal setting to assess relationships among nutrient indicators and Chl-a post-lake rehabilitation. Correlation and multiple regression analyses were performed to determine if a relationship …


Healthcare Management Strategies For Achieving Sustainable Departmental Productivity Improvements, Timothy Hargrove Jan 2022

Healthcare Management Strategies For Achieving Sustainable Departmental Productivity Improvements, Timothy Hargrove

Walden Dissertations and Doctoral Studies

Healthcare organizations’ leaders' lack of strategies to effectively deploy and monitor departments’ productivity goals affect overall organizations’ performance. Healthcare leaders who fail to deploy and monitor departmental productivity strategies effectively are limited to enhancing healthcare organizations’ performance outcomes. Grounded in transformational leadership theory, the purpose of this qualitative multiple case study was to explore strategies healthcare organizations’ leaders use to effectively identify, deploy, and monitor departments’ goals for improving their overall organization's performance. The participants were 20 healthcare leaders who successfully demonstrated success in improving their organizations’ departmental-specific productivity performance. Data were collected using semistructured interviews and a review of …


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. …


Website Accessibility Strategies, Gary W. Hrezo Jan 2022

Website Accessibility Strategies, Gary W. Hrezo

Walden Dissertations and Doctoral Studies

Most websites cannot be readily used by people with disabilities, despite the internet being an essential component for people to be part of a community. Applying web accessibility strategies means that people with disabilities can better interact with the web. Grounded in Davis’s technology acceptance model, the purpose of this qualitative multiple case study was to examine strategies used by web designers to make websites accessible for people with disabilities. The participants were experienced web developers from organizations in Florida with websites that have a Web Content Accessibility Guidelines Level 2 of three levels, i.e., AA- rating. The data collection …


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 …


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 …


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 …


Exploring Implementation Strategies Of Iot Technology In Organizations: Technology, Organization, And Environment, Khanhhung Hoang Pham Jan 2022

Exploring Implementation Strategies Of Iot Technology In Organizations: Technology, Organization, And Environment, Khanhhung Hoang Pham

Walden Dissertations and Doctoral Studies

AbstractAfter organizations successfully adopt the internet of things (IoT) technology, many corporate information technology (IT) leaders face challenges during the implementation phase. Corporate IT leaders' potential failures in implementing IoT devices may impede organizations from integrating IoT solutions and promoting business benefits. Grounded in technology-organization-environment (TOE) theory, the purpose of this qualitative, pragmatic inquiry study was to explore strategies that corporate IT leaders use to implement IoT technology in their organizations. The participants were six corporate healthcare IT leaders who successfully used implementation strategies for implementing IoT solutions for their organizations. Data were collected using semistructured interviews and industry security …


Stigma And Discrimination’S Effect On Hiv Testing Of Pregnant Women In Nigeria, Charles Echezona Nzelu Jan 2022

Stigma And Discrimination’S Effect On Hiv Testing Of Pregnant Women In Nigeria, Charles Echezona Nzelu

Walden Dissertations and Doctoral Studies

The utilization of HIV testing services among pregnant women in Nigeria has not been optimal. Although much is known about the determinants of HIV testing among pregnant women, there is a gap in knowledge on determinants for pregnant women infected with the virus, specifically whether stigma and discrimination are barriers. The purpose of this study was to examine the effect of stigmatizing attitudes and personal knowledge of discriminatory practices towards persons living with HIV/AIDS on the decision by pregnant Nigerian women aged 15-49 years to test for HIV during antenatal visits or childbirth. The health belief model served as the …


Exploring Implementation Strategies Of Iot Technology In Organizations: Technology, Organization, And Environment, Khanhhung Hoang Pham Jan 2022

Exploring Implementation Strategies Of Iot Technology In Organizations: Technology, Organization, And Environment, Khanhhung Hoang Pham

Walden Dissertations and Doctoral Studies

AbstractAfter organizations successfully adopt the internet of things (IoT) technology, many corporate information technology (IT) leaders face challenges during the implementation phase. Corporate IT leaders' potential failures in implementing IoT devices may impede organizations from integrating IoT solutions and promoting business benefits. Grounded in technology-organization-environment (TOE) theory, the purpose of this qualitative, pragmatic inquiry study was to explore strategies that corporate IT leaders use to implement IoT technology in their organizations. The participants were six corporate healthcare IT leaders who successfully used implementation strategies for implementing IoT solutions for their organizations. Data were collected using semistructured interviews and industry security …


Effects Of Indoor Air Pollutants On Childhood Asthma: African American Parents’ Perspective, Marcia Maureen Haughton Lewis Jan 2022

Effects Of Indoor Air Pollutants On Childhood Asthma: African American Parents’ Perspective, Marcia Maureen Haughton Lewis

Walden Dissertations and Doctoral Studies

AbstractIndoor air pollution has been implicated in many chronic health conditions, including childhood asthma, which is more prevalent among African American children. Children are more susceptible than adults to the effects of exposure to indoor air pollution; however, many parents may not be aware of the polluting impacts of products in their homes and are inadvertently placing their families at risk for adverse health outcomes. Understanding parents’ perceptions and experiences is essential for planning and developing educational programs and interventions for improving indoor environment management as part of asthma management in children. This descriptive phenomenological study aimed to explore parents’ …


Meaningful Use Criteria And Staff Accountability In An Office Setting, Marcia Ionie Pender Jan 2021

Meaningful Use Criteria And Staff Accountability In An Office Setting, Marcia Ionie Pender

Walden Dissertations and Doctoral Studies

Proper documentation for meaningful use (MU) criteria within electronic health records (EHRs) was identified as an issue for office staff at a local primary care office in a metropolitan area of Central Florida. The project question addressed the local gap in knowledge about MU standards necessary to ensure correct documentation of EHRs. The purpose of this doctoral project was to provide an educational program for staff to ensure compliance with the HITECH Act of 2009. Lewin’s Change Theory and Knowles Theory of Adult learning were the conceptual foundations for the educational program. The project question was to determine whether a …


Risk Factors For Foodborne Illness Outbreaks In Retail Food Establishments, Brendalee Viveiros Jan 2021

Risk Factors For Foodborne Illness Outbreaks In Retail Food Establishments, Brendalee Viveiros

Walden Dissertations and Doctoral Studies

Despite policies and interventions over the last two decades, foodborne illness remains a significant public health concern. According to the CDC’s Foodborne Disease Outbreak Surveillance System, 60% of reported foodborne illness outbreaks involved food that was prepared at a restaurant. Reducing foodborne illness outbreaks that occur at restaurants would have a significant impact on the overall number of foodborne illnesses that occur each year. The purpose of this study was to quantitatively analyze the differences in risk factors in food establishments that have had a foodborne illness outbreak compared to food establishments that have not. This study used Reckwitz’s theory …


Medical Practitioners’ Intention To Use Secure Electronic Medical Records In Healthcare Organizations, Omar Enrique Sangurima Jan 2021

Medical Practitioners’ Intention To Use Secure Electronic Medical Records In Healthcare Organizations, Omar Enrique Sangurima

Walden Dissertations and Doctoral Studies

Medical practitioners have difficulty fully implementing secure electronic medical records (EMRs). Clinicians and medical technologists alike need to identify motivational factors behind secure EMR implementation to assure the safety of patient data. Grounded in the unified theory of acceptance and use of technology model, the purpose of this quantitative, correlational study was to examine the relationship between medical practitioners’ perceptions of performance expectancy, effort expectancy, social influence, facilitating conditions, and the intention to use secure EMRs in healthcare organizations. Survey data (N = 126) were collected from medical practitioners from the northeastern United States. The results of the multiple regression …


Impact Of Information Breaches On Health Care Records, Anton Antony Arockiasamy Jan 2021

Impact Of Information Breaches On Health Care Records, Anton Antony Arockiasamy

Walden Dissertations and Doctoral Studies

Although there were almost 3.5 million reported information breaches of health care data in the first quarter of 2019, health care providers do not know the extent of digital and nondigital breaches of patient medical records. The purpose of this quantitative, comparative study was to identify the difference between the individual patient records affected by digital versus nondigital breaches for three types of health care entities in the United States, health care providers, health care plans, and health care clearinghouses. Allman’s privacy regulation theory, the National Institute of Standards and Technology Privacy Framework, and ecological systems theory comprised the theoretical …


The Causes And Control Measures Of Extended Spectrum Beta-Lactamase Producing Enterobacteriaceae In Long-Term Care Facilities, Ismaila Olatunji Sule Jan 2021

The Causes And Control Measures Of Extended Spectrum Beta-Lactamase Producing Enterobacteriaceae In Long-Term Care Facilities, Ismaila Olatunji Sule

Walden Dissertations and Doctoral Studies

Due to extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-PE), infections among residents are increasing in long-term care facilities (LTCFs), resulting in high rate of morbidity and healthcare costs. ESBL-PE resists empirical antibiotics and reduces treatment options, and a designated infection control team is unavailable to prevent the prevalence of the disease. Ecological theory guided this study. A systematic review and meta-analysis were conducted to characterize the causes of ESBL-PE and evaluate the infection control strategies within LTCFs. Multiple regression analysis (MRA) was included as supplementary statistical analysis to identify relationships between LTCFs, geographical locations, infection control measures (ICMs), and ESBL-PE. A systematic search …


Impact Of Case Management On Childhood Lead Exposure In Marion County, Indiana, Maliki Yacouba Jan 2021

Impact Of Case Management On Childhood Lead Exposure In Marion County, Indiana, Maliki Yacouba

Walden Dissertations and Doctoral Studies

The Centers for Disease Control and Prevention recently declared that no amount of childhood blood lead level (BLL) is safe. The purpose of this quantitative study with a retrospective cohort design was to evaluate the effectiveness of case management intervention on children diagnosed with elevated BLL (EBLL; ≥ 5 μg/dL) in Marion, County, Indiana. The health belief model was used as the theoretical foundation for the study. A data set of 160 lead exposure case management records was analyzed to find whether: (a) BLL at post-case-management time significantly differ from BLL at baseline (b) BLL at post-case-management time is affected …


Potential Impacts Of Artificial Intelligence On Spine Imaging Interpretation And Diagnosis, David Howard Durrant Jan 2020

Potential Impacts Of Artificial Intelligence On Spine Imaging Interpretation And Diagnosis, David Howard Durrant

Walden Dissertations and Doctoral Studies

Spine and related disorders represent one of the most common causes of pain and disability in the United States. Imaging represents an important diagnostic procedure in spine care. Imaging studies contain actionable data and insights undetectable through routine visual analysis. Convergent advances in imaging, artificial intelligence (AI), and radiomic methods has revealed the potential of multiscale in vivo interrogation to improve the assessment and monitoring of pathology. AI offers various types of decision support through the analysis of structured and unstructured data. The primary purpose of this qualitative exploratory case study was to identify the potential impacts of AI solutions …


Strategies For Reducing Adverse Medical Events From Implanted Medical Devices, Gary John Zack Jan 2020

Strategies For Reducing Adverse Medical Events From Implanted Medical Devices, Gary John Zack

Walden Dissertations and Doctoral Studies

Managing medical device monitoring processes is challenging and lacks a realtime, life cycle tracking strategy to reduce adverse medical events and revision costs for hospital administrators, physicians, and patients. Understanding the malfunctions of medical devices for cardiac and orthopedic patients could save lives and reduce hospital liability. Grounded in the business process reengineering conceptual framework, the purpose of this single qualitative case study was to explore strategies hospital managers used to redesign the implant recall surveillance process at one hospital in Pennsylvania. The 5 participants selected successfully implemented a medical device surveillance process that reduced adverse medical events and revision …


Exploration Of Ehr Implementation Strategies: A Qualitative Study, Scot Eric Loerch Jan 2020

Exploration Of Ehr Implementation Strategies: A Qualitative Study, Scot Eric Loerch

Walden Dissertations and Doctoral Studies

AbstractElectronic health record system implementations have a high failure rate when properly developed strategies are not used. These implementation failures affect healthcare workers and practitioners core roles through a lack of documentation practices, which decreases the quality of the care of the patients. Grounded in the technology acceptance model, the purpose of this qualitative multiple case study was to explore the strategies information technology systems engineers use for the implementation of Health Information Management Systems. The participants were 10 information technology systems engineers from three healthcare organizations in the greater Tennessee area. The data were collected through recorded participant interviews …


Strategies Used In Ehealth Systems Adoption, Joshua Adams Jan 2020

Strategies Used In Ehealth Systems Adoption, Joshua Adams

Walden Dissertations and Doctoral Studies

Failure to adopt an interoperable eHealth system limits the accurate communication exchange of pertinent health-care-related data for diagnosis and treatment. Patient data are located in disparate health information systems, and the adoption of an interoperable eHealth system is complex and requires strategic planning by senior health care IT leaders. Grounded in DeLone and McLean’s information system success model, the purpose of this qualitative case study was to explore strategies used by some senior information technology (IT) health care leaders in the successful adoption of an eHealth system. The participants were 8 senior health care IT leaders in the eastern United …


Predictors Of Colorectal Cancer Screening Among Maryland Adults, Aged 50–75 Years, Pamela Manwi Asangong Jan 2020

Predictors Of Colorectal Cancer Screening Among Maryland Adults, Aged 50–75 Years, Pamela Manwi Asangong

Walden Dissertations and Doctoral Studies

Screening plays an essential role in reducing colorectal cancer (CRC) incidence and mortality rates, yet CRC screening use remains low in Maryland and lower in some age and racial/ethnic groups with limited resources to participate in CRC screening programs. The purpose of this quantitative, cross-sectional study is to investigate whether age group, sex, race/ethnicity, education level, income level, health insurance coverage, and access to health care professional can predict an individual, 50–75 years of age, in Maryland to take action to fully meet the United States Preventive Services Task Force CRC screening test recommendation within the recommended time interval. The …


Strategies For Automating Pharmacovigilance Adverse Event Case Processing, Mythily Easwar Jan 2020

Strategies For Automating Pharmacovigilance Adverse Event Case Processing, Mythily Easwar

Walden Dissertations and Doctoral Studies

Business leaders who fail to implement innovative technology solutions in their companies face economic distress in these organizations. Guided by the task technology fit model as the conceptual framework, the purpose of this qualitative single case study was to explore strategies used by pharmacovigilance (PV) systems leaders to implement innovative technology solutions. The participants were 4 PV systems managers working in a pharmaceutical company in the Boston area of Massachusetts, United States, who used successful strategies to implement innovative technology solutions to automate adverse events case processing. Data were collected using semistructured interviews and company documents. The collected data were …


Cybersecurity Using Risk Management Strategies Of U.S. Government Health Organizations, Ian Cornelius Wilkinson Jan 2020

Cybersecurity Using Risk Management Strategies Of U.S. Government Health Organizations, Ian Cornelius Wilkinson

Walden Dissertations and Doctoral Studies

Seismic data loss attributed to cybersecurity attacks has been an epidemic-level threat currently plaguing the U.S. healthcare system. Addressing cyber attacks is important to information technology (IT) security managers to minimize organizational risks and effectively safeguard data from associated security breaches. Grounded in the protection motivation theory, the purpose of this qualitative multiple case study was to explore risk-based strategies used by IT security managers to safeguard data effectively. Data were derived from interviews of eight IT security managers of four U.S. government health institutions and a review of relevant organizational documentation. The research data were coded and organized to …


Sustainable Building Certification In Healthcare And Patient Satisfaction, Brian Jay Goehner Jan 2020

Sustainable Building Certification In Healthcare And Patient Satisfaction, Brian Jay Goehner

Walden Dissertations and Doctoral Studies

Eco-friendly healthcare delivery concepts are becoming more accepted as hospital leaders seek to control energy costs, mitigate contributions to climate change, and preserve scarce resources. Leadership in Energy and Environmental Design (LEED) offers healthcare leaders a framework for designing and constructing sustainable facilities that meet efficiency goals. The purpose of this quantitative cross-sectional study was to build an understanding of whether LEED certification influences Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) ratings. Using complex systems theory as the framework, the research questions were focused on exploring if higher levels of LEED certification led to greater HCAHPS overall hospital …