Digital Commons Network^™

Elementary Principals’ Instructional Support To Teach Science, Alfred Lewis

Walden Dissertations and Doctoral Studies

Principals serve as the instructional leader of their schools and teaching staff, a critical role in leading science achievement. In a racially diverse K-8 public school district in New Jersey, elementary principals are challenged to provide instructional support to teachers who are struggling to teach science to elementary students performing below proficiency on the state’s standardized assessment for science. The research questions focused on principals’ perceived challenges to support elementary science teachers, as well as recommendations for improved training and resources to support teachers. A basic qualitative study consisted of semistructured interviews with 12 elementary principals and assistant principals. The …

Prediction Of Mild Cognitive Impairment Status: Pilot Study Of Machine Learning Models Based On Longitudinal Data From Fitness Trackers, Qidi Xu, Yejin Kim, Karen Chung, Paul Schulz, Assaf Gottlieb

Faculty, Staff and Student Publications

BACKGROUND: Early signs of Alzheimer disease (AD) are difficult to detect, causing diagnoses to be significantly delayed to time points when brain damage has already occurred and current experimental treatments have little effect on slowing disease progression. Tracking cognitive decline at early stages is critical for patients to make lifestyle changes and consider new and experimental therapies. Frequently studied biomarkers are invasive and costly and are limited for predicting conversion from normal to mild cognitive impairment (MCI).

OBJECTIVE: This study aimed to use data collected from fitness trackers to predict MCI status.

METHODS: In this pilot study, fitness trackers were …

S–Domination Number In Graphs, Sarah H. A. Alsaebari, Ahmed A. Omran

Baghdad Science Journal

Let G (V, E) be a graph, the set D⊆ V is dominating set if each vertex v∈ V is either in D or is adjacent to a vertex in D and if there is no dominating subset of D, D will minimal dominating of a graph G. The domination number γ(G) is the minimum cardinality of all members of a minimal dominating set of a graph G. If V-D includes dominating set D' of vertices of a graph G then D' is called an inverse dominating set to D such that γ^-1(G) is the minimum cardinality of …

Optimization Of A Sers-Based Vertical Flow Immunoassay Utilizing A Plasmonic Syringe Filter For Rapid Biomarker Detection And Quantification, Anthony Abeiku Amissah

Theses and Dissertations

Many current diagnostic tools for accurate disease detection and quantification are often tedious and involve multiple complex steps. Consequently, there is a critical need for alternative point-of-care devices that are affordable and deliver rapid and reliable results. Recently, surface-enhanced Raman spectroscopy (SERS) has emerged as a highly effective analytical method, enhancing Raman scattering of molecules adsorbed onto nanoparticles and allowing for low-level detection and quantitative chemical analysis. In this study, we employ SERS to develop a rapid diagnostic test using human immunoglobulin G (hIgG) as a model biomarker because it is abundant in human serum, cheap, readily available, and well-understood. …

Risk Of Invasive Waterfowl Interaction With Poultry Production: Understanding Potential For Avian Pathogen Transmission Via Species Distribution Models, Reilly T. Jackson, Percival Matzinger Marshall, Chris R. Burkhart, Julia Schneck, Grant Kelly, Caleb P. Roberts

Biological Sciences Faculty Publications and Presentations

Recent outbreaks of highly pathogenic avian influenza have devastated poultry production across the United States, with more than 77 million birds culled in 2022–2024 alone. Wild waterfowl, including various invasive species, host numerous pathogens, including highly pathogenic avian influenza virus (HPAIV), and have been implicated as catalysts of disease outbreaks among native fauna and domestic birds. In major poultry-producing states like Arkansas, USA, where the poultry sector is responsible for significant economic activity (>$4 billion USD in 2022), understanding the risk of invasive waterfowl interactions with domestic poultry is critical. Here, we assessed the risk of invasive waterfowl-poultry interaction …

Teachers’ Perceptions Of Challenges And Interventions Involved In Promoting Independence Of Students In Low-Incidence Programs, Allison N. Perlstein

Walden Dissertations and Doctoral Studies

Special education teachers who provide educational opportunities for students in low-incidence programs within a Southern urban public school system in the United States faced challenges when trying to promote independence. The purpose of this project study was to understand the perceptions of teachers and the approaches they seek to best support their students in low-incidence programs in developing the independence necessary to engage in society. Maslow's theory of motivation was used as the conceptual framework for this project study. How special education teachers perceive their ability and the resources they need to support the independence of students in low-incidence programs …

2024 July 18 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

Special Education Teachers’ Experiences In A Virtual Setting, Angela Taylor

Walden Dissertations and Doctoral Studies

The problem this study addressed was that K-12 special education teachers were challenged with using effective instructional and engagement practices in a virtual setting for students with disabilities. The purpose of this study was to explore K-12 special education teachers’ experiences with using effective instructional and engagement practices in a virtual setting for students with disabilities. The conceptual framework that supported this study was Kearsley and Shneiderman’s engagement theory: A framework for technology-based teaching and learning to improve students’ learning and engagement in a virtual setting. The research question for this study focused on what are K-12 special education teachers’ …

The Role Of Core Capabilities In The Strategic Balance / An Analytical Research In The Central Bank Of Iraq, Noor Al-Hasan Hayder Mudhafar, Suheir Adel Hamed

Journal of Economics and Administrative Sciences

This research aims to investigate the relationship between two variables, namely core capabilities and strategic balance, within the context of the Central Bank of Iraq. The research problem emphasizes the necessity of implementing mechanisms that improve core capabilities to enhance strategic balance within the bank. the study highlights the importance of proposing various strategies to address the research problem, to achieve this, the research was conducted using a sample of 106 administrative leaders out of a total of 109, employing a purposive sampling method according to their positions and the organizational structure. The researcher used a descriptive-analytical approach and employed …

Evaluating And Prioritizing The Sustainable Supply Chain Management Practices In Food Industry, Shaymaa Abdulqader Mansoor, Harith Yarub Maan

Journal of Economics and Administrative Sciences

The companies are now aiming to integrate the concept of Sustainability Supply Chain Management (SSCM) into their work to improve operational and financial performance. The current study seeks to present and define the concept of the Supply Chain (SC) importance. The problem of this research it’s to determine the importance of sustainability criteria is that most companies face. A fuzzy Analytic Hierarch Process (FAHP)was used to find the relative importance of the main and sub-criteria for sustainability by establishing a program on Microsoft office Excel (MSEXCEL) to find the results and determine the importance of the main and sub-criteria based …

The Impact Of Financial Development On Bank Investment In Iraq, Yasser Ghanem Yahya, Mohammed Saleh Salman Al-Kubaisi

Journal of Economics and Administrative Sciences

Theoretically, the literature indicates that financial development has a positive effect on investment. therefore this study aim to determine the impact of the financial development on investment banking in iraq, during the semi-annual period (2005-2021) using autoregressive distributed lag (ardl), and using the toda yamamoto causal test, the result of the bound test (ardl) showed a long-term cointegration relationship between variables , the model showed that the financial depth positively affect the investment banks against the negative effect of the long-term financial stability index, while toda yamamoto causal test showed that there is no causal relationship between financial development and …

The Use Of The (Tobit) Model In Studying The Variables Affecting The Increase In The Number Of People With Systolic Hypertension, In The Presence Of The Problem Of Heterogeneity Of Random Error Variance, Mustafa Hasan Dari, Baydaa Ismael Abdul Wahhab

Journal of Economics and Administrative Sciences

The process of regression analysis is based on a number of basic assumptions, and if one of these assumptions is not available, this will lead to obtaining inaccurate results, and the most of these assumptions is homoscedasticity, violating this assumption causes a problem of heteroscedasticity of the random error variance the, which may come from different variances This cause to misleading and inaccurate decisions. Recently Econometric models received attention, especially limited regression models, which contain specific response variables and several repeated observations within a certain range, including Tobit models and also considered imitations of the Censored Regression Model. Problem arise …

The Role Of Cognitive Sharing In Enhancing The E-Learning Quality An Analytical Study Of A Sample Of Iraqi Universities, Hanan Mazin Ibrahim, Salah Abd- Alqadeer Ahmed Al- Nuiami

Journal of Economics and Administrative Sciences

The world faced many communication challenges in 2020 after the Covid-19 pandemic, the most important of which was the continuation of schooling. Therefore, the research aimed to analyze the current reality of the studied universities in terms of strengths and weaknesses and measure the implementing level of quality requirements of e-learning. This research studies the impact of knowledge sharing in its dimensions (behavior, organizational culture, work teams, and technology) on the e-learning quality and its dimensions (e-learning management, educational content, evaluation ,and evaluation). After conducting the survey, there was a difference in the universities’ application of the quality requirements of …

The Role Of Dacum Method In Designing Training Programs In Security Institutions: An Empirical Research In Iraqi National Security Services, Mustafa Ameer Abbas, Mazin Dawood Salman

Journal of Economics and Administrative Sciences

The current research has aimed to achieve a set of main objectives, which include diagnosing training needs based on their dimensions (identifying training needs, training planning, training content, training implementation, training evaluation, and feedback). This research focused on the necessary factors required to apply Developing Curriculum (DACUM) method in designing training programs according to the requirements and needs of security institutions in Iraq. The researcher assumed that there is a significant effect of DACUM method with its five dimensions (analysis, design, development, implementation, and evaluation) on designing the training program with its six dimensions (identifying training needs, training planning, training …

The Evaluation Of Quality Engineering For Supply Chain Operations In Khan Dhari Silo / Case Study, Muhammad Hardan Sultan, Batool Attia Khalaf

Journal of Economics and Administrative Sciences

The study aims to search for mechanisms to improve the supply chain operations in the silo of Khan Dhari by applying the requirements of quality engineering and focusing on the axes of design, human engineering and value engineering, which are among the most important axes concerned with quality engineering in the silo. The case study approach was relied upon as an approach that helps in the comprehensive and in-depth analysis of the research problem, and the researcher relied on checklists in collecting and analyzing data. The research problem is summarized in the main question (there are failures and stops in …

The Efficiency Of Domestic Savings And Its Impact On The Average Per Capita Gdp In Iraq For The Period (2003-2022), Sabah Rabah Al-Harishawi, Saja Fadhil Jawad Al-Dahlaki

Journal of Economics and Administrative Sciences

Local savings are an essential source for financing sustainable development. The research is based on careful analysis due to the importance of local savings in the Iraqi economy for the period (2003-2022) to provide the necessary local financing necessary for development investments in infrastructure and investments that enhance economic growth and productivity, generate job opportunities, and achieve The goals and indicators of sustainable development and the extent of the efficiency of those local savings and their impact on the average per capita share of GDP. The research aims to examine the effect of the efficiency of local savings on the …

The Impact Of Management Information Systems On Security Decision-Making: An Analytical Research For A Sample Of Security Services Officers At Al-Muthana Governorate, Ahmed Maraid Muhail, Yousif Aftan Abdullah

Journal of Economics and Administrative Sciences

The current research aims to identify the extent of the impact of management information systems on the level of security decision-making among a sample of security services officers in Muthana Governorate, and the researcher used the descriptive analytical approach to present, analyze and then explain the information, and collect data through the questionnaire as a main tool, designed based on international standards after making amendments to its paragraphs consisting of (40) paragraphs that included the two research variables, as well as through the field coexistence of the researcher and personal interviews, and the questionnaire was distributed to all research community …

Nonstationary Time Series Models Using Ardl And Nardl Estimation, Mayson Abid Hussein, Munaf Yousif Hmood

Journal of Economics and Administrative Sciences

The paper features an examination of the link between the behavior of the Money supply and Bank deposit in both an autoregressive distributed lag ARDL, plus a nonlinear autoregressive distributed lag NARDL framework. The regression relationship between any two nonstationary time series suffer from the problem of superior regression and the results may be incorrect and unreliable, and to overcome this problem the aim of this paper was find a balanced relationship in the long - run between the variables of Money supply and Bank deposits using the method of cointegration by focusing on the behavior of the residuals of …

Using The Weibull Distribution To Analyze The Reliability Of Water Turbidity Removal And The Amount Of Chlorine Remaining In The Water After Treatment, Mohammed Jumaa Samih, Iqbal Mahmoud Alwan

Journal of Economics and Administrative Sciences

All water treatment centers in Iraq operate according to the standards specified in the legal regulations. Therefore, periodic evaluations must be conducted to study and analyze the quality of the outputs of these centers. The research used the two-parameter Weibull distribution to evaluate the reliability of turbidity removal and residual chlorine in the water at the Rashidiya water center in Baghdad, Iraq. The distribution parameters were estimated using the Maximum Likelihood method with the Matlab 2022 program, and the chi-square test for Goodness of Fit was used at a significant level of 0.05. The study found that the mean (and …

Impact Of Public Debt Refinancing Techniques On Managing Public Budgeting In Iraq: An Analytical Study, Noor Abdul Razaq Abdul Wahaab, Azhar Hasan Hasan Ali

Journal of Economics and Administrative Sciences

The use of public debt by the state as a primary financial instrument is an essential strategy for directing economic activity, ensuring economic stability, and fostering economic growth. Despite this, as the levels of public debt continue to climb, governments are increasingly resorting to debt refinancing methods that are focused on either replacing or rescheduling current debt or converting to a new kind of creditor via investment and securitization investment vehicles to relieve the burden of their debt. Utilization of these instruments is essential for effective management of the overall budget. The discovery that debt scheduling and the debt sustainability …

Comparison Of Some Robust Methods Of Difference Based Ridge Estimator In Semiparametric Regression Model, Wissam Khalid Saed, Rabab Abdul Rida Al-Bakri

Journal of Economics and Administrative Sciences

The semiparametric regression models have received a lot of attention from researchers recently because it combines parametric and nonparametric methods, it is one of the advanced topics in data analysis for various studies, which aims to find the best capabilities and a high level of efficiency.  One of the most important semiparametric regression models is the partial linear regression model (PLM), which consists of a parametric component and a nonparametric component, for the purpose of estimating the parametric component, the difference method will be used to remove the nonparametric component. When the analysis hypotheses of the parametric component are not …

Constructing A Hybrid Algorithm To Model The Physical And Chemical Inspection Station Data Of The Shatt Al-Arab Waters, Ahmed Husham Mohammed, Marwan Abdul Ashour

Journal of Economics and Administrative Sciences

The aim of this paper is to find a hybrid method between of statistical methods that deal with non-linear high-dimensions. The data often suffer from complexity and overlap problems in their mathematical functions. It is difficult to delineate or accurately determine the effect of each variable on the other, accordingly it was constructing a hybrid model between the KPCA and FCM methods. The KPCA method aims to address the problem of high-dimensional nonlinear data and reduce it by finding a kernel matrix that depends primarily on the smoothing parameter matrix that was estimated using the ROT method. Then, the FCM …

Towards Fully Automated Drone-Based Last-Mile Delivery, Navid Mohammad Imran

Electronic Theses and Dissertations Archive

The last mile delivery problem has been one of the most significant challenges in modern logistics and supply chain management. It refers to the final part of the parcel-delivery process, where goods are transported from a distribution center to the individual homes. Frequently, this particular phase becomes the most inefficient and time-consuming segment of the entire delivery process, owing to diverse factors such as urban congestion, limited roadways, and the necessity for multiple stops in a limited area. Among many solutions to address this problem, drone-based last mile delivery is one of the most promising because of the drones’ potential …

Rural African American Students' Narratives Of Mathematics Experiences And Identity, Austin Shamar Ferrell

Electronic Theses and Dissertations Archive

The purpose of this study was to explore the personal narratives of five recent African American high school graduates, from several rural educational backgrounds, to understand the impact of ruralness on the construction of their mathematics learning process and mathematics identity. Narrative interviewing was used to gain valuable data which was analyzed through a qualitative thematic analytical approach and linear reconstructed narratives. General analysis of the data revealed that African American college students, from a particular university in the Southern part of the United States, who have a rural K-12 mathematics educational experience have distinctive experiences while learning mathematics. Three …

The Affordances Of Translanguaging Moments And Spaces For Multilingual Minority Kuteb Students In Nigeria, Iratishe Reuben Madaki

Electronic Theses and Dissertations Archive

Translanguaging research among multilingual students has received considerable attention across different contexts of practice. The most robust contexts in translanguaging research have been the classroom contexts between teacher and students. This study examined the affordances of translanguaging spaces “between class sessions” in school and at home contexts. This study focused on examining translanguaging moments that show the affordances of social spaces and practices of multilingual minority students across home and school contexts. The study was conducted following the translanguaging approach which combines conventional methods including ethnographic methods and newer analytical frameworks such as the ‘moment analysis’ used in this study. …

Algorithmic Methods For Metagenomic Data Analysis, Diem Trang Pham

Electronic Theses and Dissertations Archive

DNA sequencing technologies have transformed genomics, allowing for the decoding of genetic information stored within an organism's DNA. Recent advances in Next-Generation Sequencing technologies (NGS) provide great opportunities to obtain, analyze, and understand genetic information of many species. Using NGS, researchers can obtain millions fragments of DNA, known as \textit{reads}, from different environments. Metagenomics, a study of DNA from environmental samples, explores microbial taxonomy and function. Analyzing metagenomic data is an important problem as recent studies shows the relation of microbial composition to certain diseases or disorders of human health. This task can be computationally expensive since microbial communities usually …

Woven Fabrics For Composite Reinforcement: A Review, Indraneel Chowdhury, John Summerscales

School of Engineering, Computing and Mathematics

Fibres in different textile forms (woven, knitted, stitched, and non-crimp) are used to reinforce composites for multifaced applications, including automotive, aerospace, marine, rail, energy, construction, and defence sectors. Textile fabric-based fibre reinforcements for composites possess some outstanding features, such as good dimensional stability, subtle conformability, deep draw moldability/processability, lightweightness, high strength and stiffness, and low cost. The greatest advantage of textile fibre-reinforced composites is the freedom to tailor their strength and stiffness properties for specific applications. Therefore, the design of composites involves defining the fabric geometry, stacking sequence, and orientation of fibres to optimise the system. Compared to knitted, stitched, …

A Case Study On Optimizing Industrial Air Conditioning With Thermal Solar Energy In Egypt, Tamer Adel Mohamed, Hesham Safwat, Mohammed A. Ebaid

Mechanical Engineering

This study investigates the feasibility of implementing a solar-assisted adsorption chiller in an industrial building at the Oriental Weavers International factory located in 10th of Ramadan City, Cairo, Egypt. The objective is to replace an inefficient split air conditioning system currently used to cool the Jacquard units during carpet manufacturing. The research begins by analyzing the performance of the existing cooling system to establish a baseline. It then explores the potential energy savings achievable by replacing the current system with a solar-assisted adsorption chiller. The existing oversized boiler will serve as an auxiliary heater for the new system. TRNSYS simulation …

Three-Dimensional Medical Image Registration With Applications In Proton Therapy, Rui Liao

McKelvey School of Engineering Graduate Student Theses & Dissertations

Three-dimensional deformable image registration (DIR) is an important technique in medical imaging, facilitating the alignment of images acquired from different sources or at different times for clinical diagnosis and treatment planning. In clinical proton therapy dose planning, dual-energy computed tomography (DECT) has notably improved the accuracy of estimating the stopping-power ratio map, reducing proton beam range uncertainty. To address the inter-scan motion artifacts inherent in sequential DECT acquisition, we propose a novel motion-compensation scheme to incorporate a three-dimensional DIR method into the joint statistical iterative DECT reconstruction algorithm. We successfully demonstrate that inter-scan motion corrections can be integrated into the …

Future Climate Doubles The Risk Of Hydraulic Failure In A Wet Tropical Forest, Zachary Robbins, Jeffrey Chambers, Rutuja Chitra-Tarak, Bradley O. Christoffersen, L. Turin Dickman, Rosie Fisher, Alex Jonko, Ryan Knox, Charles Koven, Lara Kueppers

School of Integrative Biological & Chemical Sciences Faculty Publications

Summary

• Future climate presents conflicting implications for forest biomass. We evaluate how plant hydraulic traits, elevated CO2 levels, warming, and changes in precipitation affect forest primary productivity, evapotranspiration, and the risk of hydraulic failure.
• We used a dynamic vegetation model with plant hydrodynamics (FATES-HYDRO) to simulate the stand-level responses to future climate changes in a wet tropical forest in Barro Colorado Island, Panama. We calibrated the model by selecting plant trait assemblages that performed well against observations. These assemblages were run with temperature and precipitation changes for two greenhouse gas emission scenarios (2086–2100: SSP2-45, SSP5-85) and two CO2 levels (contemporary, …