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2017

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Secondary Teachers' Perceptions Of The Effectiveness Of A Professional Learning Community, Catina Shontelle Stewart Jan 2017

Secondary Teachers' Perceptions Of The Effectiveness Of A Professional Learning Community, Catina Shontelle Stewart

Walden Dissertations and Doctoral Studies

The implementation of professional learning communities (PLCs) in schools has been shown to serve as a catalyst in transforming school culture and increasing the academic performance of students. Our school district mandated that PLCs were established at the research site, an urban Louisiana school, for the primary purpose of closing the achievement gap. Yet, recent data from the local district indicate that these PLCs have not resulted in capacity building for sustainable improvement. Ineffective implementation of the current PLCs may have contributed to the poor outcomes. One purpose of this qualitative case study was to examine teachers' perceptions of the …

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Teachers' Perceptions Of Professional Learning Communities And Their Impact On School Culture, Jerry Paul Kociuruba Jr Jan 2017

Teachers' Perceptions Of Professional Learning Communities And Their Impact On School Culture, Jerry Paul Kociuruba Jr

Walden Dissertations and Doctoral Studies

Professional learning communities (PLCs) are a group of educators working collaboratively to improve student achievement and expand the pedagogy of the individual as well as the group. Studies on PLCs, grounded by the social constructivism theory of Vygotsky, Bandura, and Wenger, have found that collaboration and collegiality foster a positive school climate. This case study explored the perspectives of PLC participants at a suburban high school on the impact of their PLC on the school's culture. Ten teacher participants with at least 2 years of experience at the research site were individually interviewed, and 5 observations of content PLC meetings …

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The Needs Of Custodial Grandparents In Helping Their Grandchildren Experience School Success, Rex Sawyer Ward Jan 2017

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 …

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Middle School Mathematics Teachers' Perspectives On Instructional Practices, Cindy Ziegler Jan 2017

Middle School Mathematics Teachers' Perspectives On Instructional Practices, Cindy Ziegler

Walden Dissertations and Doctoral Studies

In a local middle school, students were not meeting standards on the state mathematics tests. The purpose of this qualitative study was to explore mathematics teachers' perspectives on effective mathematics instruction vis-Ã -vis the principles of the National Council of Teachers of Mathematics (NCTM). Within this framework, the 6 principles in the creation of quality mathematics programs included equity, curriculum, teaching, learning, assessment, and technology. Seven teachers from around the country participated; all met the criteria of a graduate degree in education, at least 5 years of experience teaching adolescent learners, and at least 3 years teaching mathematics. Participants were …

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French Speaking Students' Challenges In Academic Literacy At International University Of Grand-Bassam, Cote D'Ivoire, Laurent Bassa Jan 2017

French Speaking Students' Challenges In Academic Literacy At International University Of Grand-Bassam, Cote D'Ivoire, Laurent Bassa

Walden Dissertations and Doctoral Studies

International University of Grand-Bassam (IUGB) first opened its doors in Cote d'Ivoire, in a sociocultural context where a significant number of freshmen students were French speakers. Because the instructional language was English, students were faced with a language barrier that triggered more issues including difficulties in listening, speaking, reading, and writing. The purpose of this study was to uncover French speaking students' challenges in academic literacy at IUGB and to suggest some solutions that would benefit students and instructors. The research questions focused on faculty members' perceptions of French speaking students' challenges in academic literacy, and their suggestions for improving …

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Effect Of Summer Bridge Programming On Students' Performance On The Texas Success Initiative Assessment, Consuela Michelle Cooper Jan 2017

Effect Of Summer Bridge Programming On Students' Performance On The Texas Success Initiative Assessment, Consuela Michelle Cooper

Walden Dissertations and Doctoral Studies

Summer bridge programs (SBPs) have been used as a means of increasing students' college readiness and academic skills. University Southeast implemented a SBP in 2013 for students placing into developmental courses on the Texas Success Initiative Assessment (TSIA). However, researchers have found mixed results when evaluating the effectiveness of SBPs, and at University Southeast, it has not been investigated. The purpose of this quantitative study was to examine the difference in TSIA score gains between first-time-in-college students with developmental-level test scores who attended a three-week SBP and those who did not. Tinto's longitudinal model of student departure guided the study …

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Teacher And Student Perceptions Of Computer-Assisted Instructional Software To Differentiate Instruction, Christopher Garrett Cannon Jan 2017

Teacher And Student Perceptions Of Computer-Assisted Instructional Software To Differentiate Instruction, Christopher Garrett Cannon

Walden Dissertations and Doctoral Studies

Many educators struggle to meet the academic needs of students, especially in the subject area of mathematics. Computer-assisted instruction is an instructional strategy used to enhance instruction. However, there is limited research on the effectiveness of these software programs for all students. The purpose of this qualitative, embedded, multiple case study was to explore the perceptions of teachers and students using computer-assisted instructional software to differentiate instruction within a general education and special education 4th-grade mathematics classroom. The constructivism theory provided a framework for the topic of differentiated instruction. This study included a single elementary school within a district in …

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Soft Skills Needed For The 21st Century Workforce, Susan A. Dean Jan 2017

Soft Skills Needed For The 21st Century Workforce, Susan A. Dean

Walden Dissertations and Doctoral Studies

Technical skills are no longer enough for workers to compete in this highly competitive global work environment. Soft skills are of paramount importance. A multiple case study design through the lens of emotional intelligence formed the basis of the research study. The focus of the research was identification of the successful soft skills training strategies in the logistics industry. Three logistics organization leaders in the counties of Burlington, Middlesex, and Somerset, New Jersey, were participants in the study. Data were collected through semistructured interviews and the review of company documents. Four themes emerged through data analysis of converging multiple data …

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A Case Study Of Financial Literacy And Debt Of Immigrants In Lloydminster, Canada, Oludamola Olalere Durodola Jan 2017

A Case Study Of Financial Literacy And Debt Of Immigrants In Lloydminster, Canada, Oludamola Olalere Durodola

Walden Dissertations and Doctoral Studies

The high debt-to-income ratios and the low financial literacy levels among Canadian immigrants are hindering public welfare, macroeconomic policies, and economic growth. The purpose of this qualitative exploratory case study was to explore why immigrants to Lloydminster, Canada possess high debt-to-income ratios in their financial portfolios by examining pertinent themes and patterns between their debt profiles and their financial literacy levels. The life cycle hypothesis, rational choice theory, and bounded rationality theory grounded the study. Data collection from the purposeful sample included semistructured face-to-face interviews with 13 adult immigrants and a focus group discussion with 6 adult immigrants, all of …

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Environmental Relocation Policy As Experienced By One Eastern Missouri Dioxin-Contaminated Community, Susan Annette Olsen Jan 2017

Environmental Relocation Policy As Experienced By One Eastern Missouri Dioxin-Contaminated Community, Susan Annette Olsen

Walden Dissertations and Doctoral Studies

Research on environmental relocation is scant and narrow, focusing on a few aspects of permanent relocation and social impacts of natural disasters. As a result, little is known about the long term social impacts of the Environmental Protection Agency's (EPA) environmental relocation policy. A combined conceptual and theoretical framework of Walter's placeways; Ullberg's disaster memoryscapes; Richardson's remembrance and memorialization; Dynes' social capital; and, Norris, Stevens, Pfefferbaum, Wyche, and Pfefferbaum's work on community resilience guided this phenomenological study with the purpose of better understanding competing and complementary roles of each of these constructs in the context of environmental relocation of one …

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Employee Perceptions Of Emotional Intelligence Among Managers, Afraa Al-Bahrani Jan 2017

Employee Perceptions Of Emotional Intelligence Among Managers, Afraa Al-Bahrani

Walden Dissertations and Doctoral Studies

Efficient managers influence the success and performance of organizations, in contrast to inefficient managers who may negatively affect employee motivation, productivity, stress levels, job satisfaction, and performance. Managers' ability to recognize emotions can positively affect employee motivation, job satisfaction, and performance, which is likely to decrease employee turnover. The purpose of this phenomenological research was to explore the perceptions among employees regarding their managers' EI in relation to employee motivation, job satisfaction, and performance in the Northern Virginia (NOVA) area. The presence of managers' EI skills was explored based on the emotional abilities to facilitate, understand, perceive, and manage emotions. …

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Reducing Runway Incursions At The Nation's Five Busiest Airports, 2009-2011, Theodore Patrick Byrne Jan 2017

Reducing Runway Incursions At The Nation's Five Busiest Airports, 2009-2011, Theodore Patrick Byrne

Walden Dissertations and Doctoral Studies

During the last decade, the number of runway incursions at airports in the United States and worldwide has increased. The Federal Aviation Administration (FAA) has developed the Runway Safety Program (RSP) to address these concerns and improve the safety of the National Airspace System (NAS). The purpose of this study was to determine whether the FAA 2009-2011 RSP has effectively reduced runway incursions at the nation's 5 busiest airports using data from 3 years before and 3 years after the RSP. A comparison group interrupted time-series design was used to determine the impact of the RSP. A public policy framework …

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Self-Efficacy Influencing Parental Homework Involvement For Middle School Youth With Attention Deficit Hyperactivity Disorder (Adhd), Diana Yvonne Gintner Jan 2017

Self-Efficacy Influencing Parental Homework Involvement For Middle School Youth With Attention Deficit Hyperactivity Disorder (Adhd), Diana Yvonne Gintner

Walden Dissertations and Doctoral Studies

Despite evidence demonstrating the positive impact of parental involvement in children's education, youth transitioning from elementary school to middle school are often extended a greater level of autonomy. Parental involvement may decrease, which may pose particular challenges to students with attention deficit hyperactivity disorder (ADHD). The theoretical framework for this study was Bandura's self-efficacy theory which involves positive self-esteem, coping strength, and persistence toward goals. Bandura's ideas help to clarify why self-efficacy plays a role in parental involvement decisions. Through a multiple case study method, seven parents of middle school youth with ADHD, were interviewed through four open ended questions …

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Teachers' Theories Of Teaching And Learning And The Use Of Math Interventions, Nicole P. Jones Jan 2017

Teachers' Theories Of Teaching And Learning And The Use Of Math Interventions, Nicole P. Jones

Walden Dissertations and Doctoral Studies

Despite the academic gap between students with learning disabilities (LD) and their nondisabled peers, schools continue to educate students with LD in regular education classrooms. In secondary math classes, such as Algebra 1, students with LD have high percentages of failure. The purpose of this cross-sectional study was to examine the relationship between teachers' personal theories of teaching and learning and their use of math interventions. Fox's (1983) theoretical framework of teaching and learning was used as a conceptual lens. Surveys were administered to 20 high school math teachers in an urban Northeastern U.S. school district. An ordinal logistic regression …

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The Effect Of Common Core Standards On Elementary Students' Learning, Christine Arner Macdougall Jan 2017

The Effect Of Common Core Standards On Elementary Students' Learning, Christine Arner Macdougall

Walden Dissertations and Doctoral Studies

After implementing the Common Core Standards in 2012, local school districts faced additional costs in their annual budgets to train staff how to teach using these standards. One of the problems that faced the school district under study was whether to retain the Common Core Standards and to continue to fund the expense of training teachers . The purpose of this study was to assess the influence of the Common Core Standards on student achievement in a local Pennsylvania school district using scores from the Pennsylvania System of School Assessments (PSSA) for Grades 3 through 8. The research question addressed …

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Student Perspectives Of An Off-Reservation Residential Program, Lucia Rose Mitchell Jan 2017

Student Perspectives Of An Off-Reservation Residential Program, Lucia Rose Mitchell

Walden Dissertations and Doctoral Studies

Navajo students who attend residential schools that are located off the reservation and hours away from their homes, communities, and tribes may experience issues with development of a meaningful cultural identity. The purpose of this study was to better understand and identify key themes related to how Navajo students' cultural identity may be affected while living in an off-reservation residential hall. Phinney's ethnic identity development theory was used to explain the psychosocial process of developing industry and identity in adolescents. The primary research question addressed how former students' experiences of living in an off-reservation residence hall affected their development of …

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Scheduling Strategies For Construction Project Managers Toward On Time Delivery, Paul Shamp Jan 2017

Scheduling Strategies For Construction Project Managers Toward On Time Delivery, Paul Shamp

Walden Dissertations and Doctoral Studies

Construction management projects involve complex, dynamic environments resulting in uncertainty and risk, compounded by demanding time constraints. Research indicated project managers have struggled to identify best practices for scheduling construction projects via critical path methodologies while searching for tools to increase timely job completions and budget profits. The purpose of this single case study was to explore the strategies that construction project managers used to manage scheduled construction project delivery on time. The constructivist philosophical worldview was used as the framework for this study. Data were collected from semistructured interviews from 7 project managers from 5 different construction companies selected …

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Teachers' Experiences With And Perceptions Of Single-Gender Instruction Of African American Students, Kymberli Robinson Chandler Jan 2017

Teachers' Experiences With And Perceptions Of Single-Gender Instruction Of African American Students, Kymberli Robinson Chandler

Walden Dissertations and Doctoral Studies

In a large, urban district in western Tennessee, African American students perform considerably lower in math, science, and reading than other districts. Several teachers in western Tennessee are using single-gender instruction as a practice, but little is known about its effectiveness in addressing the needs of African American students. Currently, there is a gap in scholarly and practical understanding of the effects of single-gender classrooms on the academic success of African American students in western Tennessee. This exploratory qualitative case study examined the experiences shared by teachers who use single-gender learning to educate African American students in secondary schools in …

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Predicting Success Of Developmental Math Students, Isaac Martinez Jan 2017

Predicting Success Of Developmental Math Students, Isaac Martinez

Walden Dissertations and Doctoral Studies

Addressing the needs of developmental math students has been one of the most challenging problems in higher education. Administrators at a private university were concerned about poor academic performance of math-deficient students and sought to identify factors that influenced students' successful progression from developmental to college-level coursework. The purpose of this retrospective prediction study was to determine which of 7 variables (enrollment in a college success course, math placement results, frequency of use of the developmental resource center, source of tuition payment, student's age, gender, and race/ethnicity) would be predictive of success in developmental math as defined by a final …

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The Training Deficiency In Corporate America: Training Security Professionals To Protect Sensitive Information, Kenneth Tyrone Johnson Jan 2017

The Training Deficiency In Corporate America: Training Security Professionals To Protect Sensitive Information, Kenneth Tyrone Johnson

Walden Dissertations and Doctoral Studies

Increased internal and external training approaches are elements senior leaders need to know before creating a training plan for security professionals to protect sensitive information. The purpose of this qualitative case study was to explore training strategies telecommunication industry leaders use to ensure security professionals can protect sensitive information. The population consisted of 3 senior leaders in a large telecommunication company located in Dallas, Texas that has a large footprint of securing sensitive information. The conceptual framework on which this study was based was the security risk planning model. Semistructured interviews and document reviews helped to support the findings of …

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Challenges To Implementing Differentiated Instruction In Middle School Classrooms With Mixed Skill Levels, Kristin Joy Lunsford Jan 2017

Challenges To Implementing Differentiated Instruction In Middle School Classrooms With Mixed Skill Levels, Kristin Joy Lunsford

Walden Dissertations and Doctoral Studies

Implementing differentiated instruction in classrooms with students who have mixed skill levels often results in teachers facing many challenges. The purpose of this qualitative case study was to explore social studies teachers' perceptions of the challenges they faced when implementing differentiated instruction in classrooms with mixed skill levels and what teachers perceived they needed to help overcome these challenges. This project study was guided by the conceptual frameworks of constructivism from Piaget and Bruner along with the theoretical framework of Vygotsky's zone of proximal development. The research questions focused on the viewpoints of teachers on implementing differentiated instruction in their …

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Improving Literacy For Diverse Low Socio-Economic Status Middle School Students, Vivian Fowler Means Jan 2017

Improving Literacy For Diverse Low Socio-Economic Status Middle School Students, Vivian Fowler Means

Walden Dissertations and Doctoral Studies

In an urban district, Surfside School personnel were concerned that student literacy proficiency levels were low during 2011-2014 and teachers had not been able to close the achievement gap despite a focus on literacy practices and literacy professional development (PD) provided by the district. The purpose of this case study was to explore the perceptions of teachers and administrators in relation to the best instructional practices for increasing self-efficacy when teaching literacy skills and related literacy PD for teachers. Knowles' andragogy theory and Vygotsky's social learning theory formed the theoretical foundation of this study, which hold that PD should provide …

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The Relationship Between Nonprofit Organizations And Cloud Adoption Concerns, Dana Haywood Jan 2017

The Relationship Between Nonprofit Organizations And Cloud Adoption Concerns, Dana Haywood

Walden Dissertations and Doctoral Studies

Many leaders of nonprofit organizations (NPOs) in the United States do not have plans to adopt cloud computing. However, the factors accounting for their decisions is not known. This correlational study used the extended unified theory of acceptance and use of technology (UTAUT2) to examine whether performance expectancy, effort expectancy, social influence, facilitating conditions, hedonic motivation, price value, and habit can predict behavioral intention (BI) and use behavior (UB) of NPO information technology (IT) managers towards adopting cloud computing within the Phoenix metropolitan area of Arizona of the U.S. An existing UTAUT2 survey instrument was used with a sample of …

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Exploring Security, Privacy, And Reliability Strategies To Enable The Adoption Of Iot, Daud Alyas Kamin Jan 2017

Exploring Security, Privacy, And Reliability Strategies To Enable The Adoption Of Iot, Daud Alyas Kamin

Walden Dissertations and Doctoral Studies

The Internet of things (IoT) is a technology that will enable machine-to-machine communication and eventually set the stage for self-driving cars, smart cities, and remote care for patients. However, some barriers that organizations face prevent them from the adoption of IoT. The purpose of this qualitative exploratory case study was to explore strategies that organization information technology (IT) leaders use for security, privacy, and reliability to enable the adoption of IoT devices. The study population included organization IT leaders who had knowledge or perceptions of security, privacy, and reliability strategies to adopt IoT at an organization in the eastern region …

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Small To Medium Enterprise Succession Planning: Millennial Employee Development, Mark Tarmann Jr. Jan 2017

Small To Medium Enterprise Succession Planning: Millennial Employee Development, Mark Tarmann Jr.

Walden Dissertations and Doctoral Studies

Increased mobility and a growing presence in the workforce by millennial employees are pushing sustainability to the forefront of concerns for business leaders. Especially for small to medium enterprises (SMEs) with limited human capital resources and no formal succession plans. Thus, increasing the need for insight on millennial employee development to mitigate voluntary turnover. The purpose of this multiple case study was to explore successful millennial employee developmental strategies employed by 3 SMEs leaders in southern New Jersey. These SMEs leaders were the ideal population with millennial employees with 3 or more years of employment and not solely family-run organizations. …

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Elementary Teachers' Perceptions Of Practices And Professional Development For Differentiating Mathematics Instruction, Sandra Mujagic Varajic Jan 2017

Elementary Teachers' Perceptions Of Practices And Professional Development For Differentiating Mathematics Instruction, Sandra Mujagic Varajic

Walden Dissertations and Doctoral Studies

Teachers and administrators in a Title I elementary school in a southeastern state are concerned that there has been a trend over the past 3 years of declining standardized assessment scores in mathematics for students in Grades 3, 4, and 5. The purpose of this qualitative case study was to explore teachers' perceptions of practices, and professional development (PD) for differentiating mathematics instruction. This study was grounded in the conceptual framework of Vygotsky's zone of proximal development and Tomlinson's differentiated instruction (DI). Purposeful sampling was used to select 8 teachers and 1 mathematics coach, who worked with students in Grades …

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Understanding Of Phenolic Compound Retention Mechanisms On Pes-Uf Membrane, Amine Mnif, Meral Mouelhi, Bechir Hamrouni Jan 2017

Understanding Of Phenolic Compound Retention Mechanisms On Pes-Uf Membrane, Amine Mnif, Meral Mouelhi, Bechir Hamrouni

Turkish Journal of Chemistry

Ultrafiltration (UF) is investigated as a possible alternative to remove organic compounds from aqueous synthetic solution. This paper presents a comprehensive study towards a better understanding of phenolic compound retention mechanisms during UF processes. Thus, removal of phenol and resorcinol was studied using a polyethersulfone ultrafiltration (PES-UF) membrane. The influence of main operating conditions (feed concentration, transmembrane pressure, and pH) on the retention was evaluated. Membrane--solute interactions were found to play an important role during the process, suggesting the adsorption of the target compounds on the PES-UF membrane. The level of adsorption was consequently evaluated by measuring the quantity of …

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Synthesis Of Pds/Zns--Cds-Type Photocatalysts Using Zns As Sulphide Source, Radu Banica, Petrica Linul, Cristina Mosoarca Jan 2017

Synthesis Of Pds/Zns--Cds-Type Photocatalysts Using Zns As Sulphide Source, Radu Banica, Petrica Linul, Cristina Mosoarca

Turkish Journal of Chemistry

In this work, a new method for the growth of large CdS crystals into PdS/ZnS--CdS-type photocatalysts is presented. In order to accomplish this, in the first stage zinc sulphide was synthesised and hydrothermally crystallised. In the second stage, after PdS decoration, the recrystallised zinc sulphide was utilised as sulphur source for the synthesis of PdS/ZnS--CdS-type photocatalysts. The photocatalysts were characterised by X-ray diffraction, transmission electron microscopy, energy dispersive X-ray spectroscopy, and diffuse reflectance spectroscopy. In the third stage magnetic polymer supports were manufactured and loaded with photocatalyst. Finally photocatalysis experiments under blue light illumination were conducted for the hydrogen evolution …

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Ultrasound-Assisted Surfactant/Ionic Liquid Aqueous Two-Phase System Extraction Prior To High Performance Liquid Chromatography For The Determination Of Tetracyclines In Milk And Honey Samples, Hayri̇ye Mi̇ne Antep, Taşkin Mumcu, Kami̇l Bostanci, Serap Seyhan Bozkurt, Melek Merdi̇van Jan 2017

Ultrasound-Assisted Surfactant/Ionic Liquid Aqueous Two-Phase System Extraction Prior To High Performance Liquid Chromatography For The Determination Of Tetracyclines In Milk And Honey Samples, Hayri̇ye Mi̇ne Antep, Taşkin Mumcu, Kami̇l Bostanci, Serap Seyhan Bozkurt, Melek Merdi̇van

Turkish Journal of Chemistry

In this work, an ultrasonic-assisted surfactant/ionic liquid aqueous two-phase system (ATPS) extraction method was developed to extract six tetracycline antibiotics from food samples before their chromatographic determination using high performance liquid chromatography. The ATPS was formed with 1-allyl-3-methyl-imidazolium bromide, Triton X-100, and dipotassium hydrogen phosphate. The parameters including type and amount of surfactant, ionic liquid and salt, pH of sample solution, and sonication time were optimized. Under the optimized conditions, linear calibration curves of the six tetracyclines were obtained in the range of 10--500 $\mu $g L$^{-1}$ with $>$ r$^{2} =$ 0.990 (n $=$ 9). The proposed green analytical …

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Spectrophotometric Detection Of Rhodamine B In Tap Water, Lipstick, Rouge, And Nail Polish Samples After Supramolecular Solvent Microextraction, Nebi̇ye Özkantar, Mustafa Soylak, Mustafa Tüzen Jan 2017

Spectrophotometric Detection Of Rhodamine B In Tap Water, Lipstick, Rouge, And Nail Polish Samples After Supramolecular Solvent Microextraction, Nebi̇ye Özkantar, Mustafa Soylak, Mustafa Tüzen

Turkish Journal of Chemistry

A simple and sensitive supramolecular solvent-based dispersive liquid--liquid microextraction method was described for the separation/preconcentration and spectrophotometric detection of rhodamine B. The microextraction method, which was realized at ambient temperature for the detection of rhodamine B, was carried out by using supramolecular solvents such as tetrahydrofuran and decanoic acid. The method was based on analyses of rhodamine B by using UV-Vis spectrophotometry at 558 nm. The influences of some parameters such as pH, sample volume, eluent solutions, centrifugation time, and ultrasonic bath time were optimized. The effects of various matrix ions were also investigated. Moreover, the limit of detection and …

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