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

Digital Commons Network™

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

2020

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 25501 - 25530 of 28918

Full-Text Articles in Entire DC Network

Exploring The Impact Of A Corequisite Model On Academic Performance In Precalculus: Who Benefits When?, Savita Bhagi Jan 2020

Exploring The Impact Of A Corequisite Model On Academic Performance In Precalculus: Who Benefits When?, Savita Bhagi

University of the Pacific Theses and Dissertations

With AB 705 being enforced in all California community colleges since Fall 2019, colleges have devised corequisite courses in almost all English and mathematics gateway courses. Some quantitative and qualitative studies have shown positive results of corequisite courses in English, and some math courses such as statistics, but there is limited quantitative research on the effects of the corequisite model on student academic performance in STEM math courses, like college algebra and precalculus. Many mathematics department faculty members believe that the corequisite model, especially in STEM math courses, may not work in community colleges due to the population consisting of …

Go to article

Pandemic Leadership Failures And Public Health, Gidon Eshel Jan 2020

Pandemic Leadership Failures And Public Health, Gidon Eshel

Animal Sentience

In a plainly worded target article whose sagacity and import can hardly be overstated, Wiebers & Feigin place the recent COVID-19 crisis in historic perspective. They warn us that unless we make sweeping changes the next pandemics are all but preordained. They offer a blueprint for dramatically lowering the likelihood of future pandemics.

Go to article

Effect Of Pyridoxal Phosphate And Tetrahydrofolate Bound On Human Serine Hydroxymethyltransferase By Molecular Dynamic Simulation, Peerapong Wongpituk Jan 2020

Effect Of Pyridoxal Phosphate And Tetrahydrofolate Bound On Human Serine Hydroxymethyltransferase By Molecular Dynamic Simulation, Peerapong Wongpituk

Chulalongkorn University Theses and Dissertations (Chula ETD)

Serine hydroxymethyltransferase (SHMT), a pyridoxal phosphate (PLP)-dependent enzyme, is involved in one-carbon metabolism in multiple biochemical pathways, including the biosynthesis of purine and thymidine. SHMT1 is the enzyme to be studied clinically as a target for cancer chemotherapy. Therefore, the binding mechanism of this enzyme would be investigated. In this study, molecular dynamics simulations for 500 ns was applied on SHMT1 tetramer in six systems with different ligand cofactors (PLP-Lys, L-ser, PLS, PLG, THF, and MTHF) in order to understand its structural dynamics properties. The key residues Y'73, S53, H231, K257, R263 and R402 were found in all ligand cofactor/SHMT1 …

Go to article

Intermodulation Distortions From A Chain Of Coupled Nonlinear Oscillators Near A Hopf Bifurcation, Yanathip Thipmaungprom Jan 2020

Intermodulation Distortions From A Chain Of Coupled Nonlinear Oscillators Near A Hopf Bifurcation, Yanathip Thipmaungprom

Chulalongkorn University Theses and Dissertations (Chula ETD)

The inner ear can produce sounds whose frequencies correspond to linear combinations of the stimulus frequencies, f1 and f2. These sounds, called Distortion Product Otoacoustic Emissions (DPOAEs), can be measured by inserting a microphone into the ear canal. In human, the intensity level of DPOAEs at frequency 2f1-f2 varies significantly with a stimulus frequency and can exhibit a quasi-periodic pattern, a feature termed a DPOAE fine structure. This distinctive characteristic has been generally accepted as a consequence of the interference between two DPOAE signals produced by two spatially separated groups of sensory hair cells, whose characteristic frequencies correspond to the …

Go to article

Determination Of Herbicides In Water Samples By Spectroscopic Techniques, Anna Prukjareonchook Jan 2020

Determination Of Herbicides In Water Samples By Spectroscopic Techniques, Anna Prukjareonchook

Chulalongkorn University Theses and Dissertations (Chula ETD)

Atrazine and paraquat are widely used to control weeds in the agricultural areas. The residue of herbicides can harm the environment and living things. In this research, nanoporous carbon derived from melamine based polybenzoxazine or NPC-PBZ-m was used as an adsorbent for atrazine and paraquat analysis. NPC-PBZ-m was synthesized by sol-gel and pyrolysis processes. The characteristics of sorbent were investigated by FTIR, BET, XPS, and FE-SEM. For atrazine determination, NPC-PBZ-m pre-concentration column combined with a colorimetric detection based on a Konig’s reaction and HPLC-UV at 222 nm were developed. The parameters affecting the adsorption performance were optimized. The reusability of …

Go to article

Adakitic Paracale Granodiorite In Southeastern Luzon, Philippines: A Peek At A Proto-Philippine Sea Plate-Related Magmatic Arc, Graciano P. Yumul Jr, Karlo L. Queaño, Jenielyn T. Padrones, Carla B. Dimalanta, Eric A. Andal Jan 2020

Adakitic Paracale Granodiorite In Southeastern Luzon, Philippines: A Peek At A Proto-Philippine Sea Plate-Related Magmatic Arc, Graciano P. Yumul Jr, Karlo L. Queaño, Jenielyn T. Padrones, Carla B. Dimalanta, Eric A. Andal

Environmental Science Faculty Publications

This paper describes the geochemistry, petrogenesis and tectonic setting of a silicic pluton, the Paracale Granodiorite (PG), intruded into an ophiolitic suite in southeastern Luzon island, Philippines. Whole rock chemistry suggests that the PG samples are calc-alkaline and are characterized by light rare earth element (LREE)-enrichment and relatively weak heavy rare earth element (HREE)-depletion. They also show depletion in Nb, Ta, Zr and Ti and positive anomalies in K, Pb and Sr when normalized with the Primordial Mantle and normal-mid-ocean ridge basalt (N-MORB). The PG biotite mineral chemistry shows an affinity to calc-alkaline trends based on the FeOtot versus Al2O3, …

Go to article

Recommendation System For Horticultural Commodities, Lukman Adlin Harahap Jan 2020

Recommendation System For Horticultural Commodities, Lukman Adlin Harahap

Chulalongkorn University Theses and Dissertations (Chula ETD)

Horticultural commodities commonly have fluctuating prices due to their nature. Seasonality and climate are the main factors that cause their prices to fluctuate. Price instability causes a planning on horticultural cultivation to become difficult. Local farmers would intuitively know the planning by their experience, but this might be too complicated for those farmers who are new or have no experience. Thus, the proposed recommendation system would be able to help the new farmers to set a schedule for horticultural cultivation. The proposed recommendation system consists of three phases: price prediction, commodity recommendation, and cultivation scheduling. A hybrid of Long Short-Term …

Go to article

พลศาสตร์ของไหลเชิงคำนวณของรีฟอร์มมิงด้วยคาร์บอนไดออกไซด์ของมีเทนในเครื่องปฏิกรณ์ ฟลูอิไดซ์เบดแบบหมุนเวียนภายใน, ดุลยพัฒน์ เทียมสกุล Jan 2020

พลศาสตร์ของไหลเชิงคำนวณของรีฟอร์มมิงด้วยคาร์บอนไดออกไซด์ของมีเทนในเครื่องปฏิกรณ์ ฟลูอิไดซ์เบดแบบหมุนเวียนภายใน, ดุลยพัฒน์ เทียมสกุล

Chulalongkorn University Theses and Dissertations (Chula ETD)

ในปัจจุบัน แก๊สเรือนกระจกหลักที่ปลดปล่อยออกสู่ชั้นบรรยากาศ คือ แก๊สคาร์บอนไดออกไซด์ และมีเทน เพื่อจัดการกับแก๊สเรือนกระจก เทคโนโลยีการดักจับแก๊สคาร์บอนไดออกไซด์จึงได้ถูกคิดค้นขึ้น อย่างไรก็ตาม การดักจับแก๊สคาร์บอนไดออกไซด์นั้น แก๊สคาร์บอนไดออกไซด์ยังคงอยู่ในรูป CO2 จึงนำไปสู่เทคโนโลยีการนำแก๊สคาร์บอนไดออกไซด์มาใช้ประโยชน์ ที่เป็นการเปลี่ยนแก๊สคาร์บอนไดออกไซด์ที่ดักจับได้เป็นสารอื่นที่มีมูลค่า ปฏิกิริยารีฟอร์มมิงด้วยคาร์บอนไดออกไซด์ของมีเทน เป็นการทำปฏิกิริยาระหว่าง แก๊สคาร์บอนไดออกไซด์ และมีเทน จะเห็นได้ว่าปฏิกิริยานี้เป็นการใช้แก๊สคาร์บอนไดออกไซด์ และมีเทนซึ่งเป็นสาเหตุหลักของแก๊สเรือนกระจก เครื่องปฏิกรณ์ฟลูอิไดซ์เบดแบบหมุนเวียนภายในเป็นเครื่องปฏิกรณ์ที่ได้รวมทั้งหอไรเซอร์ ไซโคลน หอดาวเนอร์ และท่อป้อนกลับ ไว้ในเครื่องปฏิกรณ์เครื่องเดียว ทำให้เครื่องปฏิกรณ์นี้สามารถดำเนินการได้ง่ายกว่าเครื่องปฏิกรณ์ฟลูอิไดซ์เบดแบบหมุนเวียนทั่วไป โดยเครื่องปฏิกรณ์ชนิดนี้ถูกแบ่ง ด้วยแผ่นกั้นเป็น 2 ฝั่ง ซึ่งทำหน้าที่เป็นไรเซอร์และดาวเนอร์ของระบบที่เชื่อมกันด้วยช่องบริเวณด้านล่างของ เครื่องปฏิกรณ์ ในงานวิจัยนี้ได้ทำการศึกษาอุทกพลศาสตร์และปฏิกิริยารีฟอร์มมิงด้วยคาร์บอนไดออกไซด์ของมีเทนที่เกิดขึ้นในเครื่องปฏิกรณ์ฟลูอิไดซ์เบดแบบหมุนเวียนภายในที่มีการออกแบบ ลักษณะตัวกระจายแก๊ส ความสูงของแผ่นกั้นระหว่างด้านไรเซอร์กับดาวเนอร์ ความกว้างของ loop seal และความกว้างของ ทางออกแก๊ส แตกต่างกัน ซึ่งได้ทำการศึกษาโดยใช้อนุภาคขนาด 200 ไมโครเมตร ความหนาแน่น 3000 กิโลกรัมต่อลูกบาศก์เมตร และมีอัตราการป้อนแก๊สด้านดาวเนอร์และด้านไรเซอร์เท่ากับ 0.3 เมตรต่อวินาที และ 1.37 เมตรต่อวินาที ตามลำดับ โดยใช้พลศาสตร์ของไหลเชิงคำนวณในการศึกษา พบว่า การออกแบบเครื่องปฏิกรณ์ฟลูอิไดซ์เบดแบบหมุนเวียนภายในที่เหมาะสม คือ ตัวกระจายแก๊สแบบยกระดับ สัดส่วนความสูงของเครื่องเป็น 2 เท่าของความสูงแผ่นกั้น สัดส่วนความกว้างของเบดเป็น 10 เท่าของ loop seal และสัดส่วนความกว้างของ freeboard zone เป็น 37.5 เท่าของช่องทางออกแก๊ส

Go to article

Preparation Of Corn Starch-Alginate Beads Encapsulated Anthocyanins And Cinnamon Oil, Duangkamon Sriwichai Jan 2020

Preparation Of Corn Starch-Alginate Beads Encapsulated Anthocyanins And Cinnamon Oil, Duangkamon Sriwichai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Corn starch-alginate beads loaded with anthocyanins or cinnamon oil were prepared using different components by the ionotropic gelation method. The matrix of anthocyanin-loaded corn starch-alginate beads (or anthocyanin beads) was alginate, native corn starch and soy protein isolated (SPI). The anthocyanins were extracted from butterfly pea flowers. SPI was used due to the good anthocyanin adsorption without leaking of anthocyanin during freeze-dried process. In addition, cinnamon oil-loaded corn starch-alginate beads (or oil beads) composed of alginate, porous corn starch and cinnamon oil. Porous corn starch was obtained from enzyme hydrolysis. Both types of beads were characterized their chemical and physical …

Go to article

Detection Of Hydrogen Peroxide And Persulfate Ion By Gold Nanorod Sensor, Petrada Chunnuan Jan 2020

Detection Of Hydrogen Peroxide And Persulfate Ion By Gold Nanorod Sensor, Petrada Chunnuan

Chulalongkorn University Theses and Dissertations (Chula ETD)

Gold nanorods (GNRs) multicolor sensor were developed to determine hydrogen peroxide (H2O2) and persulfate (S2O82-) based on the etching of GNRs which was detected from either naked-eye or UV-visible spectroscopic method. The changed size of GNRs was directly related to the concentration of H2O2 and S2O82-. To obtain the optimum conditions for H2O2 and S2O82- determination, CTAB concentration, FeSO4 concentration and detection time were investigated. For H2O2, the working range was 0.20 to 3.0 mM where the good linear working range was in the range of 0.20 to 0.80 mM. LOD was 0.08 mM. Moreover, the GNRs conjugated hydrogel was …

Go to article

Steven Bryant’S The Automatic Earth: A Conductor’S Analysis And Performance Perspectives, Corey S. Bonds Jan 2020

Steven Bryant’S The Automatic Earth: A Conductor’S Analysis And Performance Perspectives, Corey S. Bonds

Theses and Dissertations--Music

The purpose of this research is to present a conductor’s analysis and performance perspectives of The Automatic Earth, composed by Steven Bryant for the Arizona State University Wind Orchestra, and premiered by its conductor, Professor Gary Hill, at the 2019 College Band Director’s National Association National Conference. Through the conductor’s analysis and performance perspectives, the author seeks to provide future conductors and performers with necessary musical interpretations and technical guidance. The four-part process of research includes: 1. detailed analysis of the musical score of The Automatic Earth, 2. observation of rehearsals and world premiere of the work, 3. in-depth …

Go to article

"Advocate To Donate" How To Market An Environmental Nonprofit, Brianne Estrada Jan 2020

"Advocate To Donate" How To Market An Environmental Nonprofit, Brianne Estrada

Whittier Scholars Program

This paper is about my journey as a marketing intern at Alturas Wildlife sanctuary in Costa Rica, an exotic wildlife rehabilitation animals, and sanctuary to house permanent animal residents where I stayed for thirty days to help come up with ways to push them to market themselves better. While I was there, I conducted interviews with volunteers and other interns that were there for veterinary research to discuss their interest in the sanctuary. I observed and noted a lot of actions that were done on the premise. I studied the sanctuary's mission and watched it in action as they rehabilitated …

Go to article

From Service Role To Partnership: Faculty Voices On Collaboration With Librarians, Maria A. Perez-Stable, Judith M. Arnold, Lumarie Guth, Patricia F. Vander Meer Jan 2020

From Service Role To Partnership: Faculty Voices On Collaboration With Librarians, Maria A. Perez-Stable, Judith M. Arnold, Lumarie Guth, Patricia F. Vander Meer

University Libraries Faculty & Staff Publications

Librarians at two research universities surveyed faculty practices and views about collaboration with librarians to gain insight into likely partners and strategies for information literacy (IL) instruction. Quantitative data on methods of collaboration revealed the most often-practiced method of working together was having a librarian deliver an instruction session, followed by developing an online course guide. Statistical differences by disciplinary area and years teaching were examined; experienced faculty reported a greater range of collaboration methods. Thematic analysis of open-ended responses on motives for collaboration, a factor less frequently studied, found the top reason was to improve student IL skills, followed …

Go to article

Introduction To Neutroalgebraic Structures And Antialgebraic Structures (Revisited), Florentin Smarandache Jan 2020

Introduction To Neutroalgebraic Structures And Antialgebraic Structures (Revisited), Florentin Smarandache

Branch Mathematics and Statistics Faculty and Staff Publications

In all classical algebraic structures, the Laws of Compositions on a given set are well-defined. But this is a restrictive case, because there are many more situations in science and in any domain of knowledge when a law of composition defined on a set may be only partially-defined (or partially true) and partially-undefined (or partially false), that we call NeutroDefined, or totally undefined (totally false) that we call AntiDefined. Again, in all classical algebraic structures, the Axioms (Associativity, Commutativity, etc.) defined on a set are totally true, but it is again a restrictive case, because similarly there are numerous situations …

Go to article

Neutro-Bck-Algebra, Florentin Smarandache, Mohammad Hamidi Jan 2020

Neutro-Bck-Algebra, Florentin Smarandache, Mohammad Hamidi

Branch Mathematics and Statistics Faculty and Staff Publications

This paper introduces the novel concept of Neutro-BCK-algebra. In Neutro-BCK-algebra, the outcome of any given two elements under an underlying operation (neutro-sophication procedure) has three cases, such as: appurtenance, non-appurtenance, or indeterminate. While for an axiom: equal, non-equal, or indeterminate. This study investigates the Neutro-BCK-algebra and shows that Neutro-BCK-algebra are different from BCK-algebra. The notation of Neutro-BCK-algebra generates a new concept of NeutroPoset and Neutro-Hass-diagram for NeutroPosets. Finally, we consider an instance of applications of the Neutro-BCK-algebra.

Go to article

Remark On Artificial Intelligence, Humanoid And Terminator Scenario: A Neutrosophic Way To Futurology, Victor Christianto, Florentin Smarandache Jan 2020

Remark On Artificial Intelligence, Humanoid And Terminator Scenario: A Neutrosophic Way To Futurology, Victor Christianto, Florentin Smarandache

Branch Mathematics and Statistics Faculty and Staff Publications

This article is an update of our previous article in this SGJ journal, titled: On Gödel's Incompleteness Theorem, Artificial Intelligence & Human Mind [7]. We provide some commentary on the latest developments around AI, humanoid robotics, and future scenario. Basically, we argue that a more thoughtful approach to the future is "technorealism."

Go to article

With Jørn Utzon: Approaching And Preaching Architectural Texts, Sunggu Yang Jan 2020

With Jørn Utzon: Approaching And Preaching Architectural Texts, Sunggu Yang

Faculty Publications - George Fox School of Theology

Architecture is communication. It conveys human stories, feelings, philosophies, and cultural histories and interacts through them with viewers, occupants, artists, and surrounding communities. Architecture, whether explicitly religious or not, is spiritual, too. Embodying and manifesting spatial spirituality, it invokes in the mind of the appreciator awe, wonder, and contact with the transcendent. All this is possible because architecture is, to borrow Paul Tillich’s language, an art form carrying the ultimate concerns of human life. Recognizing the communicative, spiritual, and existential nature of architecture exemplified in Jørn Utzon’s Sydney Opera House, this article meets a need and demonstrates the potential for …

Go to article

Exploring The Relationship Between Iot Security And Standardization, James Jenness Clapp Jan 2020

Exploring The Relationship Between Iot Security And Standardization, James Jenness Clapp

Walden Dissertations and Doctoral Studies

The adoption of the Internet of Things (IoT) technology across society presents new and unique challenges for security experts in maintaining uninterrupted services across the technology spectrum. A botnet implemented over 490,000 IoT connected devices to cripple the Internet services for major companies in one recent IoT attack. Grounded in Roger’s diffusion of innovations theory, the purpose of this qualitative exploratory multiple-case study was to explore implementation strategies used by some local campus IT managers in educational institutions in the United States to secure the IoT environment. The participants were 10 IT local campus IT managers within educational institutions across …

Go to article

Borehole Water And Sachet Water Production In Southeast Nigeria, Joseph Emerenini Jan 2020

Borehole Water And Sachet Water Production In Southeast Nigeria, Joseph Emerenini

Walden Dissertations and Doctoral Studies

AbstractDrinking water is potable and safe if it is free from physical, chemical, and microbiological contaminants. Despite the Nigerian government's interventions to alleviate water contamination, a considerable number of Nigerians are still without safe potable water. The purpose of this quantitative cross-sectional study was to examine whether the level of contamination of drinking water sourced from boreholes and sachet packaged water in Owerri City, Southeast Nigeria was in compliance with World Health Organization (WHO) standards, and to examine the relationship between the physical, chemical, and bacteriological parameters of drinking water sourced from borehole and sachet packaged water The conceptual framework …

Go to article

Public And Voucher School Graduation Outcomes Between 2011-2015 In A Southwestern State, Raymond Onyeama Ibeh Jan 2020

Public And Voucher School Graduation Outcomes Between 2011-2015 In A Southwestern State, Raymond Onyeama Ibeh

Walden Dissertations and Doctoral Studies

AbstractIn 1995, Texas created its first charter schools, which consisted of open enrollment schools of choice, as part of education initiative/reform. However, low graduation rates among public schools in the state persisted. The purpose of this study was to explore factors that might contribute to students who received vouchers to attend private or high-performing public schools not graduating at a higher rate than traditional public schools’ students. I used the rational choice theory (RCT) as the theoretical framework to examine whether students awarded vouchers for attending private schools graduated higher than students attending traditional public schools. The study covered 2010 …

Go to article

Relationship Between Risk Identification, Risk Response, And Project Success, Marsha Marinich Jan 2020

Relationship Between Risk Identification, Risk Response, And Project Success, Marsha Marinich

Walden Dissertations and Doctoral Studies

AbstractProjects are used to implement the organization's strategic goals, but high failure rates reduce projects' effectiveness in successfully achieving goals. High failure rates reduce project managers’ effectiveness of projects in successfully achieving goals. Senior leaders and project managers are unable to deliver successful projects due to unmanaged risks. Grounded in expected utility theory, the purpose of this quantitative correlational study was to examine the relationship between risk identification, risk responses, and project success. A survey was created in SurveyMonkey® and distributed on LinkedIn. Survey responses were analyzed from 71 project managers with at least five years of experience in Washington, …

Go to article

Parent–Teacher Online Communication And Third- Through Fifth-Grade Student Academic Achievement, Sandra Joyce Mcknight Jan 2020

Parent–Teacher Online Communication And Third- Through Fifth-Grade Student Academic Achievement, Sandra Joyce Mcknight

Walden Dissertations and Doctoral Studies

AbstractTechnology-based tools for parent–teacher communication, such as online parent portals, are becoming the preferred method of exchanging information between home and school. However, little research has been conducted on parent–teacher communication using online parent portals. The purpose of this quantitative nonexperimental cross-sectional study was to examine the relationship between parents’ use of a parent–teacher online communication parent portal and students’ academic achievement. Bandura’s social cognitive theory of self-efficacy provided the theoretical framework for this study. Archival data from a Southeast U.S. public school district were used to examine the relationship between parents’ average quarterly use of a parent portal and …

Go to article

Key Strategies For Successful Information Technology Projects, David Morris Jan 2020

Key Strategies For Successful Information Technology Projects, David Morris

Walden Dissertations and Doctoral Studies

AbstractThe successful implementation of information technology (IT) projects globally depends on the increasing reliance of project managers on IT innovations. Some project managers and business leaders do not possess the strategies to effectively manage and successfully implement IT projects. Grounded in coordination theory, the purpose of this qualitative multiple case study was to explore strategies used to successfully implement IT projects. Data were collected using semistructured interviews and from company documents. The participants comprised 6 IT project managers in Northeast Ohio who successfully implemented IT projects. Thematic analysis was used to analyze the data. Four themes emerged: communication amongst all …

Go to article

How Teachers And Counselors Collaborate Formally And Informally To Improve The Precollege Curriculum, Amanda Williams Jan 2020

How Teachers And Counselors Collaborate Formally And Informally To Improve The Precollege Curriculum, Amanda Williams

Walden Dissertations and Doctoral Studies

Teachers and counselors in a large suburban district in the Southeastern United States strive to collaborate to equip students with key skills needed to succeed in their first year of college. The problem is that little was known about the collaborative challenges teachers and counselors faced as they implemented the precollege curriculum in secondary schools. The purpose of this qualitative case study was to examine how teachers and counselors collaborate formally and informally to improve the precollege curriculum as recommended by the guidelines of the American School Counselor Association and adopted by the local district. Knowles’s theory of andragogy provided …

Go to article

Factors Affecting Electronic Banking Adoption In Barbados, Jacqueline Delores Bend Jan 2020

Factors Affecting Electronic Banking Adoption In Barbados, Jacqueline Delores Bend

Walden Dissertations and Doctoral Studies

The low rate of customers' adoption of electronic banking services affects retail banks' profitability. The operating cost for a financial transaction performed by bank tellers averages US$1.07 compared to US$0.01 using electronic banking channels. It is paramount for retail banking leaders to understand the factors influencing customer adoption of electronic banking to sustain competitive advantage. Grounded in the technology acceptance model framework, the purpose of this quantitative correlational study was to examine the relationship between perceived usefulness (PU), perceived ease of use (PEOU), and customer adoption of electronic banking in Barbados. The validated technology acceptance model survey instrument was used …

Go to article

Adaptive Leadership Strategies And Project Success Of Construction Project Managers In Jamaica, Devon Rohan Smith Jan 2020

Adaptive Leadership Strategies And Project Success Of Construction Project Managers In Jamaica, Devon Rohan Smith

Walden Dissertations and Doctoral Studies

The lack of effective project leadership strategies can influence organizations' performance to deliver projects successfully in a rigorous and complex business environment. Project leaders whose leadership performance is poor may experience business failure. Grounded in adaptive leadership theory, the purpose of this qualitative multiple case study was to explore adaptive leadership strategies used by some project managers in Jamaica to increase project success rates. Participants were 8 senior public sector project managers who successfully managed projects using adaptive leadership strategies. The data collection techniques were semistructured face-to-face interviews and review of company archival documents and artifacts from the organizations' websites. …

Go to article

Perceptions Of K-12 School Principals Regarding Instructional Leadership To Support Music Teachers, Erick Cuthbert Willie Jan 2020

Perceptions Of K-12 School Principals Regarding Instructional Leadership To Support Music Teachers, Erick Cuthbert Willie

Walden Dissertations and Doctoral Studies

K-12 school principals, as instructional leaders, are critical to supporting music teachers. The problem addressed in this project study was that principals have been inconsistently applying instructional leadership to support music teachers to remain in the teaching profession. The purpose of this basic qualitative research design study was to understand how principals applied instructional leadership practices to support music teachers in order to retain them. The conceptual framework was the instructional leadership model of Hallinger and Murphy, which defines three main dimensions of instructional leadership: (a) the school mission, (b) the instructional program, and (c) the school climate. The research …

Go to article

Reducing The Frequency And Effects Of Fraudulent Activities In Community Action Agencies, Marvin L J Blye Jan 2020

Reducing The Frequency And Effects Of Fraudulent Activities In Community Action Agencies, Marvin L J Blye

Walden Dissertations and Doctoral Studies

In the United States, nonprofit organization leaders estimate that $40 billion of revenue is lost every year because of financial scandals and fraudulent activities. Fraud negatively affects organizational functioning, service delivery, and board governance. Nonprofit leaders who fail to prevent fraud increase the chance of their organization’s failure. Grounded in Cressey’s fraud triangle theory, the purpose of this qualitative multiple case study was to explore strategies nonprofit community action agency (CAA) executive leaders use to reduce fraudulent financial activities. The participants comprised 5 executive CAA nonprofit leaders located in Maryland who effectively used strategies to reduce fraudulent financial behaviors in …

Go to article

Youth Leadership Development Program Evaluation, Loreley Lyn Smith Jan 2020

Youth Leadership Development Program Evaluation, Loreley Lyn Smith

Walden Dissertations and Doctoral Studies

In competitive youth sports organizations, few organizational leaders focus on leadership development to prepare youth for life situations. Sports organizational leaders are concerned about youth leadership development, as development allows youth to build skills necessary to understand their strengths and weaknesses and recognize ways to overcome fears. Grounded in social learning theory, the purpose of this summative program evaluation was to determine the extent to which a competitive youth sports leadership development program aligned with the organization’s primary objective to provide skilled athletic training while providing lessons to prepare youth for adulthood. The participants comprised 40 key stakeholders, including participants …

Go to article

Modeling The Galactic Compact Binary Neutron Star Population And Studying The Double Pulsar System, Nihan Pol Jan 2020

Modeling The Galactic Compact Binary Neutron Star Population And Studying The Double Pulsar System, Nihan Pol

Graduate Theses, Dissertations, and Problem Reports (ETD)

Binary neutron star (BNS) systems consisting of at least one neutron star provide an avenue for testing a broad range of physical phenomena ranging from tests of General Relativity to probing magnetospheric physics to understanding the behavior of matter in the densest environments in the Universe. Ultra-compact BNS systems with orbital periods less than few tens of minutes emit gravitational waves with frequencies ~mHz and are detectable by the planned space-based Laser Interferometer Space Antenna (LISA), while merging BNS systems produce a chirping gravitational wave signal that can be detected by the ground-based Laser Interferometer Gravitational-Wave Observatory (LIGO). Thus, BNS …

Go to article

First Prev Next Last