Digital Commons Network^™

Development Of The Framework For A Lean, Energy Efficient, And Environmentally Friendly Port: Umm Qasr Port As A Case Study, Safaa A.J. Alfayyadh

World Maritime University Ph.D. Dissertations

The research focus is to examine rigorously how the implementation of Lean within the Umm Qasr Port improves the operation processes and to explore the Lean impact on environment improvement and energy efficiency management. In this research, the ROPMEE model has been developed by the researcher to evaluate the service quality in the cargo delivery process in the Port of Umm Qasr as it covers all the functional and non-functional areas in the cargo delivery process compared to other quality dimensions. The findings confirm that the process quality dimension is the most influential factor in service quality in the Port …

Are Rolling Averages A Good Way To Assess Training Load For Injury Prevention?, Paolo Mensaspa

Research outputs 2014 to 2021

I read the letter ‘Time to bin the term ‘overuse’ injury: is ‘training load error’ a more accurate term?’ with great interest.1 I agree with the authors that changes in training load (TL) could increase injury risk and I share their concern relating to periods of low/no loads. However, the terminology suggested by Drew and Purdam ‘errors in training load prescription’ may not be ideal. In fact, despite the potentially flawless TL prescription, some spikes in load may be due to variables that are out of control, such as variability in the demands of competitions,2 and cannot be avoided. Moreover, …

Addressing Calcium Carbonate Cycling In Blue Carbon Accounting, Peter I. Macreadie, Oscar Serrano, Damien T. Maher, Carlos M. Duarte, John Beardall

Research outputs 2014 to 2021

Scientific Significance Statement

There is considerable interest in measuring the capacity of the world's ecosystems to trap and store excess atmospheric carbon dioxide to mitigate human‐induced climate change. Blue carbon describes the carbon storage potential of vegetated coastal ecosystems including tidal marshes, mangroves, and seagrasses. Efforts are now underway to include blue carbon in global carbon offset schemes by managing these ecosystems to enhance carbon sequestration by focusing on their effect on organic carbon processing. However, it is unclear what role inorganic carbon processing in blue carbon ecosystems plays in their overall carbon sequestration. Here, we argue that there are …

Resistivity Profiles Of Perth Soil In Australia In Leak-Detection Test, Lopa M. Pandey, Sanjay K. Shukla, Daryoush Habibi

Research outputs 2014 to 2021

The use of a suitable leak-detection system for the prevention and mitigation of pollution due to lining system failures is integral to the proper management of landfill facilities. This paper briefly summarises various methods of leak detection that are currently being practised. The details of a newly developed leak-detection technique are also presented. The tests were conducted to evaluate the performance of the new technique by use of controlled leakage. The resulting resistivity profiles for Perth soil in Australia were obtained at 10 min. This method is found to be effective in detecting and locating liner leakage issues within 30 …

Seagrasses Of The North West Of Western Australia: Biogeography And Considerations For Dredging-Related Research: Report Of Theme 5 - Project 5.1.2 Prepared For The Dredging Science Node, Kathryn Mcmahon, John Statton, Paul Lavery

Research outputs 2014 to 2021

This review was undertaken to identify which seagrass primary producers (species or different functional groups) that collectively cover the bio-geographic range of key primary producers in the northwest of Western Australia are most appropriate for the focus of subsequent research into thresholds and indicators of response to dredging-related pressures (i.e. Theme 5). An assessment framework was developed based on six criteria: biogeographic range; ecological relevance (life-history strategy, habitats, natural dynamics and ecological services); current knowledge on thresholds and bioindicators; likelihood that species are sensitive and resilient to dredging related stressors; extent of improvement in applied knowledge; and likelihood of being …

A Transfer Matrix Approach To Aid In The Design And Optimization Of Hybrid Advanced Passive Structures For Enhancing Photovoltaic Efficiency, James Walshe, Sarah Mccormack, Hind Ahmed, John Doran

Conference Papers

The addition of a luminescent down-shifting (LDS) layer directly onto a photovoltaic (PV) cell introduces additional loss mechanisms within the system. The combination of non-ideal photo-luminescent materials encapsulated within a limited range of viable host materials, with the increased reflection losses arising from the newly created interface represent losses which must be overcome for LDS to offer an enhancement to the underlying cells efficiency. Exploiting the interaction between the highly enhanced electric fields established close to a metal nanoparticles (MNP’s) surface is one route aimed at mitigating the poor optical properties of the luminophore-host combinations available. Alternative approaches, aimed at …

An Examination Of The Neuropsychological Construct Executive Function And How It May Be Impacted By Cognitive And Exercise Interventions, Erica Schmidt

All ETDs from UAB

Background: There is a growing body of literature supporting the beneficial effects of cognitive training and exercise training on executive function (EF) in older adults. More recently, evidence is amassing that interventions which combine cognitive and physical activity, for example, exergames, may confer even greater cognitive benefits. Comparison of EF interventions for older adults requires more investigation and would benefit from improved operationalization of the EF construct and better understanding of factors which predict baseline EF in older adults. Methods and Results: Fifty-seven sedentary, non-gamer, community dwelling older adults were randomly assigned to one of three intervention groups (computerized cognitive …

Mathematical Modeling Of Brain Tumors Advances Patient Care, Oncogenesis, And The Use Of In Silico Clinical Trials, Elizabeth Yates Scribner

All ETDs from UAB

Glioblastoma multiforme (GBM) is a uniformly fatal form of brain cancer that can exhibit unpredictable responses to dierent rate-reducing therapies. Here, we construct a mathematical model of brain tumor growth and utilize in silico clinical trials to investigate the unusual behavior of GBM. We also use the model to study the progression of grade 2 and grade 3 tumors to higher grades like GBM. Simulations in Chapter 1 lead to the identication of a previously unknown pattern of progression under anti-angiogenic (AA) therapy, which we call \Expanding FLAIR + Necrosis." Model analysis predicts that clinical features of this growth would …

Optimal Response In Decision Making: An Experimental Investigation Of Decision Strategies, Valerio Biscione

Other Faculty of Health Theses

A decision process can be conceptually separated into a perceptual process and a decision strategy. The former includes all the different mechanisms that contribute to accumulate information relevant to the decision, whereas the decision strategy determines when enough information has been accumulated and a decision can be taken. Although perceptual processes have been extensively investigated in the last decades, decision strategies have received comparatively little attention. The main aim of this work is to fill this gap by analysing four decision strategies with two different experimental paradigms. We also focus on ancillary decision-making topics, such as the effect of stimulus …

Risk Edecisions: Online Behaviour And Decision Making From The Igeneration To The Silver Surfer, Claire May White

Other Faculty of Health Theses

Since the inception of the Internet there has been immense growth in the number of internet users worldwide, and the integration of social media in our daily lives has become commonplace for many. Yet, alongside the many benefits of this global connectivity come numerous risks. Research shows that individuals of all ages are exposed to, and engage in, risky activities online, despite numerous campaigns to highlight the perils of risky online behaviour. Although the rates of victimisation increase year-on-year, surprisingly little is known about the psychological mechanisms underlying online risk-taking. The work in this thesis aimed to address this gap …

The Impact Of Mobile Learning On Student Performance As Gauged By Standardised Test (Naplan) Scores, S Males, F Bate, J Macnish

Education Papers and Journal Articles

This paper discusses the National Assessment Program for Literacy and Numeracy (NAPLAN) performance of Years Five, Seven and Nine students in standardised tests prior and post the implementation of a mobile learning initiative in a Western Australian school for boys. The school sees the use of ICT as important in enhancing its potential to deliver optimal educational outcomes. However, the School is also cognisant of the shared concern of teachers and parents in the school community about an over-reliance on mobile devices for learning, to the detriment of students’ accomplishments in literacy and numeracy. The paper examines NAPLAN results from …

Effect Of Response To Intervention On Developmental Education Students' Persistence, Retention, And Completion, Cheryl Garayta

Walden Dissertations and Doctoral Studies

In 2012, national rates of degree or certificate completion for students beginning college in developmental education courses were 35%. At a Midwestern state community college completion rates were even lower, with only 27% of developmental reading/writing (DRW) students completing their program. Therefore, the purpose of this causal- comparative study was to compare success rates for DRW students beginning college in a multileveled (MLI) program and in a response to intervention (RtI) based program. The MLI program was grounded in a scaffolded learning framework, and the RtI program was grounded in a transformative learning framework. Four research questions were posited to …

Proactive It Incident Prevention: Using Data Analytics To Reduce Service Interruptions, Mark G. Malley

Walden Dissertations and Doctoral Studies

The cost of resolving user requests for IT assistance rises annually. Researchers have demonstrated that data warehouse analytic techniques can improve service, but they have not established the benefit of using global organizational data to reduce reported IT incidents. The purpose of this quantitative, quasi-experimental study was to examine the extent to which IT staff use of organizational knowledge generated from data warehouse analytical measures reduces the number of IT incidents over a 30-day period, as reported by global users of IT within an international pharmaceutical company headquartered in Germany. Organizational learning theory was used to approach the theorized relationship …

The Needs Of Custodial Grandparents In Helping Their Grandchildren Experience School Success, Rex Sawyer Ward

Walden Dissertations and Doctoral Studies

At a local middle school, twice as many students were being reared by their grandparents than in each of the other 3 schools in the study district. Most of these students were experiencing academic and social issues; increased understanding of the issue was needed to address these problems. Using a phenomenological approach, this project study explored the lived experiences of grandparents of skipped-generation households and school employees who interact daily with skipped-generation households. Epstein's theory of parental involvement undergirded this study, and semistructured interviews were used to gather data from 15 grandparents and 15 school employees. Interviews were transcribed, open …

Diversifying Funds To Enhance Financial Sustainability Of A County Library System, Francis Adetokunboh Adebola-Wilson

Walden Dissertations and Doctoral Studies

Existing research has focused on the financial challenges affecting public libraries and how to improve library efficiency and funding. However, it is unknown how financial diversification could improve the economic fortunes of public libraries. The purpose of this study was to illuminate the unique structural, legal, and operational dynamics associated with adopting a financial diversification strategy in the Clayton County Library System (CCLS), Georgia, and to explore what would support or hinder the implementation of such a strategy. Using modern portfolio theory, the research explored how the CCLS could diversify its funding sources. A qualitative single-case study was conducted to …

Influence Of Technology On English Language Learners' Vocabulary, Reading, And Comprehension, Catherine Elizabeth Crum

Walden Dissertations and Doctoral Studies

Researchers have shown that vocabulary development is a challenge for English Language Learners (ELLs) as they are less prepared to use contextual and linguistic clues to decode unfamiliar vocabulary. Beginning in the upper elementary grades, reading in content areas becomes lengthier and more complex. Technology-supported vocabulary instruction to teach social studies to ELLs is a relatively new concept in the 5th grade classroom. The purpose of this comparative study was to assess the vocabulary and reading comprehension outcomes of ELLs in the content area of 5th grade social studies when taught using technology-supported versus traditional textbook instruction. Mayer's cognitive theory …

Organizational Strategies For Developing New Stem Talent, Keri Allen

Walden Dissertations and Doctoral Studies

U.S. business leaders are experiencing a deficiency within STEM skill sets in newly hired employees, resulting in challenges to business sustainability. The purpose of this case study was to identify strategies used to develop new STEM employees for business sustainability. Participants included 5 IT business leaders who had experience developing new STEM employees in a technology organization in New York. The 3-part theory of knowledge management, knowledge creation, and knowledge transfer was the conceptual framework for this study. Data collection included face-to-face interviews and analyses of company training plans, videos, and internal websites. Methodological triangulation of the analysis technique included …

E-Business Strategy To Adopt Electronic Banking Services In Ethiopia, Teklebrhan Woldearegay Gebreslassie

Walden Dissertations and Doctoral Studies

E-banking services in Ethiopia are increasing among low-income populations; however, with over 53 million mobile service users countrywide, more than 85% of the population still lacks access to banking services. A single case study was used to explore e-business strategies that bank managers use to promote the adoption of electronic banking services to the unbanked population in Ethiopia. The extended resource-based view of strategy served as the conceptual framework for this study. Data were collected from interviews with 12 experienced bank managers from leading commercial bank in Ethiopia. Data were analyzed using coding techniques and word clustering, with the help …

Understanding Rural Appalachian Ohio Educators' Perceptions Of Students Of Poverty, Angela Dawn Hicks

Walden Dissertations and Doctoral Studies

In a rural elementary school, characterized by high poverty levels in Appalachian Ohio, school personnel were concerned that student literacy and math proficiency levels remained low during 2005-2015 and teachers had not been able to close the achievement gap between economically disadvantaged students and non-economically disadvantaged students despite a focus on literacy and math professional development (PD) provided by the district. Administrators were concerned that teachers' perceptions, and beliefs about students of poverty might contribute to students' underachievement. The purpose of this study was to understand teachers' perceptions of students living in poverty. Guided by Gorski's equity literacy theory, research …

How Attitude Toward The Behavior, Subjective Norm, And Perceived Behavioral Control Affects Information Security Behavior Intention, David Philip Johnson

Walden Dissertations and Doctoral Studies

The education sector is at high risk for information security (InfoSec) breaches and in need of improved security practices. Achieving data protections cannot be through technical means alone. Addressing the human behavior factor is required. Security education, training, and awareness (SETA) programs are an effective method of addressing human InfoSec behavior. Applying sociobehavioral theories to InfoSec research provides information to aid IT security program managers in developing improved SETA programs. The purpose of this correlational study was to examine through the theoretical lens of the theory of planned behavior (TPB) how attitude toward the behavior (ATT), subjective norm (SN), and …

Strategies To Support Survivors Of Corporate Downsizing, Joseph Linton

Walden Dissertations and Doctoral Studies

Between 2003 and 2011, 1.2 million U.S. workers were laid off every year. Some organizational leaders of information technology/telecommunications organizations lack strategies to improve affective commitment to the organization after downsizing events. The strains of overwork, organizational changes, anxiety over job insecurity, and lack of choice often result in physical illness, emotional trauma, and extreme disengagement termed survivor syndrome. The purpose of this single case study was to explore strategies organizational leaders in the Midwest United States in information technology/telecommunications organizations used to improve affective commitment to the organization after downsizing. The conceptual framework was Herzberg's 2-factor theory. Data were …

The Relationship Between Parents' Value For Play And Kindergarteners' Mastery Of The Alphabetic Principle, Tamala S. Findley

Walden Dissertations and Doctoral Studies

Students who struggle with understanding the alphabetic principle often develop difficulties in reading. Play is known as a key element of early learning, but its perceived value among teachers and parents has declined over the years. This study investigated the relationship between parents' levels of agreement about the value of play and kindergarten students' levels of mastery of the alphabetic principle. The theoretical foundation included the views of Montessori and Piaget, who believed that a classroom with a play-based environment encourages independent thinking and learning. The study's research questions concerned the relationship between 53 parents' levels of agreement about the …

Teacher Perceptions Of The Successful Implementation Of Co-Teaching Services, Vanna Raybould

Walden Dissertations and Doctoral Studies

This project study addressed a lack of consistent instructional delivery of co-teaching practices in a rural high school in middle Georgia. Though co-teaching services are provided, teachers are not implementing co-teaching models with fidelity. Because co-teaching teams are not trained together, teachers' efficacy in the delivery of co-taught instruction has often been negatively affected. This project study provided insight into the perceptions of co-teachers regarding the implementation of co-teaching practices. Bandura's self-efficacy theory served as the conceptual framework for this study. Using a qualitative, bounded, single case study design, the study explored the perceptions of co-teachers and the planning practices …

Overcoming The Challenges Of Retaining Novice Teachers In A County Public School By Ernst Albert, Ernst Albert

Walden Dissertations and Doctoral Studies

Retaining novice teachers in a Northeast Florida county public school is an ongoing challenge. Research indicates that 14% of new teachers will leave the field within 5 years. The purpose of this case study was to investigate the major factors that contributed to this unique group of novice teachers' decisions to continue to teach at the school during their first 5 years in the field. The societal model served as the conceptual framework for this study of factors affecting teacher turnover, with emphasis on teacher and school characteristics in relation to teacher attrition. Data collected from 9 interviews and an …

Relationship Between Corporate Governance And Information Security Governance Effectiveness In United States Corporations, Robert Elliot Davis

Walden Dissertations and Doctoral Studies

Cyber attackers targeting large corporations achieved a high perimeter penetration success rate during 2013, resulting in many corporations incurring financial losses. Corporate information technology leaders have a fiduciary responsibility to implement information security domain processes that effectually address the challenges for preventing and deterring information security breaches. Grounded in corporate governance theory, the purpose of this correlational study was to examine the relationship between strategic alignment, resource management, risk management, value delivery, performance measurement implementations, and information security governance (ISG) effectiveness in United States-based corporations. Surveys were used to collect data from 95 strategic and tactical leaders of the 500 …

Relationship Between Admission Criteria And Program Completion In A Radiation Therapy Program, Adrienne Mae Dougherty

Walden Dissertations and Doctoral Studies

Poor completion rates in the radiation therapy associate's degree program offered through a community college did not meet the standards set by the college and damaged the program's reputation. The relationship between admission criteria and program completion was not known. The purpose of this study was to determine if there were any relationships between the admission criteria (GPA in prerequisite courses, interview scores, writing sample scores, and preadmission testing scores) and students' completion of a radiation therapy associate's degree program. This correlational study used 2 stages of Tinto's retention theory: (a) recruitment and admission to college and (b) pre-entry assessment …

Best Practices For Improving The Writing Of 3rd And 4th Grade Students, Parastou Afshar Eftekhari

Walden Dissertations and Doctoral Studies

Scores on a state comprehensive assessment test showed that writing skills of 4th grade students enrolled in a K-8 magnet school in the southeastern part of the United States were below target. The assistant principal of the K-8 magnet school explained that a review of 3-year longitudinal data revealed that the number of students who met proficiency for the 4th grade writing assessment decreased by 1% each year. The purpose of this case study was to gain an understanding from teachers about the best practices on how to improve students' writing skills. Denzin and Lincoln's constructivist theoretical concepts of accommodation …

Effects Of A One-To-One Ipad Initiative Program On 11th Grade Standardized Test Scores, Brendan James Howard

Walden Dissertations and Doctoral Studies

The iPad and other mobile devices have become so popular over the past few years that many school districts are purchasing these devices and implementing them in the classroom with little to no research. Because there has been no previous research at one rural school district in Michigan, the primary purpose of this quantitative causal-comparative study was to investigate the effects that a 1-to-1 iPad initiative program has had on only 11th grade student achievement and determine if 11th grade students' test scores on the Michigan Merit Exam in the areas of mathematics, science, and social studies for each school …

Factors Affecting Student Loan Default In Proprietary Non-Degree Granting Colleges, Samuel Hanson Kelley

Walden Dissertations and Doctoral Studies

The significant problem addressed in this research was the increasing default rate among federal student loan borrowers who attended non-degree-granting proprietary colleges in Florida (i.e., career and technical colleges). The purpose of this study was to identify, better understand, and predict which borrower characteristics increased the likelihood of student loan default at proprietary non-degree-granting colleges. The research was based on the structural-functional and planned behavior theories and utilized a quantitative, non-experimental, cross-sectional design to explore the relationship between academic success, age, college graduation status, ethnicity, gender, high school class ranking, and federal student loan default. Self-reported data were obtained from …

Elementary Teacher Knowledge Of And Practices For Teaching Reading To African American Students, Camille Jacqueline Little

Walden Dissertations and Doctoral Studies

State standardized tests results indicated that between 2012 and 2016, fewer African American students at a rural, Title I elementary school met state standards in reading compared with other racial/ethnic groups of students. A gap in practice existed because the school and district had not conducted studies to understand teacher knowledge and practice as they related to teaching reading to African American students. The purpose of this qualitative case study was to address the problem and gap in practice by exploring elementary teacher knowledge and understanding of the learning needs in reading among African American students. Tomlinson's theory of differentiated …