Computer Sciences Commons^™

Enhanced Method Call Tree For Comprehensive Detection Of Symptoms Of Cross Cutting Concerns, Saleem Obaidullah Mir

CCAC Theses and Dissertations

Aspect oriented programming languages provide a new enhanced composition mechanism between the functional sub units as compared to earlier non aspect oriented languages. For this reason the refactoring process requires a new approach to the analysis of existing code that focuses on how the functions cross cut one another. Aspect mining is a process of studying an existing program in order to find these cross cutting functions or concerns so they may be implemented using new aspect oriented constructs and thus reduce the complexity of the existing code. One approach to the detection of these cross cutting concerns generates a …

An Investigation Of Socio-Technical Components Of Knowledge Management System (Kms) Usage, Noel Wint Jr.

CCAC Theses and Dissertations

Existing literature indicates that although both academics and practitioners recognize knowledge management (KM) as a source of competitive advantage, users are not always willing to use a knowledge management system (KMS). Because of the social nature of knowledge transfer, a KMS can be considered a socio-technical system. Many explanations have been presented for this failure to utilize the KMS. These explanations include a number of the socio-technical factors relating to people, processes, and technologies. While these factors may have significant explanatory power when examined independently, existing studies have not sufficiently addressed the interactions among all three socio-technical factors or their …

An Experimental Study On The Role Of Password Strength And Cognitive Load On Employee Productivity, Stephen Mujeye

CCAC Theses and Dissertations

The proliferation of information systems (IS) over the past decades has increased the demand for system authentication. While the majority of system authentications are password-based, it is well documented that passwords have significant limitations. To address this issue, companies have been placing increased requirements on the user to ensure their passwords are more complex and consequently stronger. In addition to meeting a certain complexity threshold, the password must also be changed on a regular basis. As the cognitive load increases on the employees using complex passwords and changing them often, they may have difficulty recalling their passwords. As such, the …

Electronic Medical Records (Emr): An Empirical Testing Of Factors Contributing To Healthcare Professionals’ Resistance To Use Emr Systems, Emmanuel Patrick Bazile

CCAC Theses and Dissertations

The benefits of using electronic medical records (EMRs) have been well documented; however, despite numerous financial benefits and cost reductions being offered by the federal government, some healthcare professionals have been reluctant to implement EMR systems. In fact, prior research provides evidence of failed EMR implementations due to resistance on the part of physicians, nurses, and clinical administrators. In 2010, only 25% of office-based physicians have basic EMR systems and only 10% have fully functional systems. One of the hindrances believed to be responsible for the slow implementation rates of EMR systems is resistance from healthcare professionals not truly convinced …

Community College Faculty Dispositions Towards Blended Learning, Robin A. Hill

CCAC Theses and Dissertations

Community colleges are being encouraged to find and provide access to higher education by offering more flexible course delivery methods to meet the needs of their diverse student body. At the same time, these institutions must retain their quality of instruction, accountability for learning outcomes, and institutional obligations. Blended learning, where students attend class both on campus and online, is promoted as one solution for attaining such goals. Among the four-year undergraduate population, blended learning has been shown to support student success, meet diverse learning styles, and meet institutional obligations; however, research within the community college population is limited. In …

Capturing, Eliciting, And Prioritizing (Cep) Non-Functional Requirements Metadata During The Early Stages Of Agile Software Development, Richard Rabin Maiti

CCAC Theses and Dissertations

Agile software engineering has been a popular methodology to develop software rapidly and efficiently. However, the Agile methodology often favors Functional Requirements (FRs) due to the nature of agile software development, and strongly neglects Non-Functional Requirements (NFRs). Neglecting NFRs has negative impacts on software products that have resulted in poor quality and higher cost to fix problems in later stages of software development.

This research developed the CEP “Capture Elicit Prioritize” methodology to effectively gather NFRs metadata from software requirement artifacts such as documents and images. Artifact included the Optical Character Recognition (OCR) artifact which gathered metadata from images. The …

Patient Portals: Achieving Technology Acceptance And Meaningful Use In Independent Physician-Managed Practices, Kimberly W. Bartholomew

CCAC Theses and Dissertations

As the bulk of medical health records shift from paper-based file systems to electronic formats, the promise of the transformation process called healthcare reform included adding efficiencies to medical practice workflows, lower costs, improved quality of care and most important, and the freeing of patient information from traditional propriety silos. With this incoming largess of protected health information data now viewable through online patient portals, patients can be empowered to become educated and active in their own health care decisions, but only if they have admission to their information. A digital divide currently exists in many medical practices where only …

An Empirical Investigation Of Factors Affecting Resistance To Using Multi-Method Authentication Systems In Public-Access Environments, Joseph Marnell

CCAC Theses and Dissertations

Over the course of history, different means of object and person identification as well as verification have evolved for user authentication. In recent years, a new concern has emerged regarding the accuracy of verifiable authentication and protection of personal identifying information (PII), because previous misuses have resulted in significant financial loss. Such losses have escalated more noticeably because of human identity-theft incidents due to breaches of PII within multiple public-access environments. Although the use of various biometric and radio frequency identification (RFID) technologies is expanding, resistance to using these technologies for user authentication remains an issue. This study addressed the …

Evaluation Of Supervised Machine Learning For Classifying Video Traffic, Farrell R. Taylor

CCAC Theses and Dissertations

Operational deployment of machine learning based classifiers in real-world networks has become an important area of research to support automated real-time quality of service decisions by Internet service providers (ISPs) and more generally, network administrators. As the Internet has evolved, multimedia applications, such as voice over Internet protocol (VoIP), gaming, and video streaming, have become commonplace. These traffic types are sensitive to network perturbations, e.g. jitter and delay. Automated quality of service (QoS) capabilities offer a degree of relief by prioritizing network traffic without human intervention; however, they rely on the integration of real-time traffic classification to identify applications. Accordingly, …

The Effects Of Time-Compression And Learner-Control In Multimedia Instruction, Jason Alan Pittman

CCAC Theses and Dissertations

There is a significant gap in the body of knowledge concerning time-compressed multimedia instruction. Although research indicates that there is no loss in learning through well-designed multimedia instruction compressed at 25%, research is lacking that analyzes the effects of time-compression with learner-control included in the multimedia instruction. The aim of the study was to address this gap in the research by integrating learner-control into the interface of a time-compressed multimedia instructional lesson using similar methodologies from previous research.

Effects were analyzed of time-compressed learner-controlled multimedia instruction on learning and perceived cognitive load. Additionally, the researcher employed a participant population from …

Understanding The Impact Of Hacker Innovation Upon Is Security Countermeasures, Sean M. Zadig

CCAC Theses and Dissertations

Hackers external to the organization continue to wreak havoc upon the information systems infrastructure of firms through breaches of security defenses, despite constant development of and continual investment in new IS security countermeasures by security professionals and vendors. These breaches are exceedingly costly and damaging to the affected organizations. The continued success of hackers in the face of massive amounts of security investments suggests that the defenders are losing and that the hackers can innovate at a much faster pace.

Underground hacker communities have been shown to be an environment where attackers can learn new techniques and share tools pertaining …

Development Of A Cybersecurity Skills Index: A Scenarios-Based, Hands-On Measure Of Non-It Professionals' Cybersecurity Skills, Melissa Carlton

CCAC Theses and Dissertations

Completing activities online are a part of everyday life, both professionally and personally. But, conducting daily operations, interacting, and sharing information on the Internet does not come without its risks as well as a potential for harm. Substantial financial and information losses for individuals, organizations, and governments are reported regularly due to vulnerabilities as well as breaches caused by insiders. Although advances in Information Technology (IT) have been significant over the past several decades when it comes to protection of corporate information systems (IS), human errors and social engineering appear to prevail in circumventing such IT protections. While most employees …

Factors That Affect Faculty Use Of Course Management Systems In Traditional Courses At Private 4-Year Historically Black Colleges And Universities: An Empirical Approach, Hyacinth L. Burton

CCAC Theses and Dissertations

The use of information technology to supplement and enhance teaching is prevalent in many higher education institutions (HEIs). HEIs throughout the United States have invested in course management systems (CMS); however, despite heavy investments, faculty use of such systems is limited. Many studies were conducted on the use of CMS in HEIs, but they concentrated on faculty use of such systems at non-Historically Black Colleges and Universities (non-HBCUs). Little has been done on the use of CMS in HBCUs. The goal of this study was to examine factors that affect faculty use of CMS in traditional courses at HBCUs. Facilitating …

Examining Consumers’ Selective Information Privacy Disclosure Behaviors In An Organization’S Secure E-Commerce Systems, Patrick I. Offor

CCAC Theses and Dissertations

The study is an examination of the antecedents to the paradoxical changes in the consumers’ intended and actual personal information disclosure behaviors in online transactions or in e-commerce environments. The argument is that a consumer’s information privacy paradox is based on the consumer’s cognitive predisposition. The study adopted the conceptual underpinning inherent in the Privacy Regulation Theory (PRT) and translated them into information privacy context, as the consumer’s desired state of information privacy, information privacy self-interest, information privacy permeability, and information privacy equipoise constructs, to examine the causal relationship among the constructs and between a consumer’s selective personal information disclosure …

A Study Of Data Sharing Practices Within Scholarly Research Communities, Mary Harward

CCAC Theses and Dissertations

Recent literature acknowledges the importance of data and effective data management strategies to facilitate collaboration between disciplines of research. Likewise, understanding the policies and practices that support data sharing is a growing area of research in the fields of information and social studies of science. Shared data allow researchers to build on fellow researchers’ work to enrich and facilitate advancements in science. While much has been written to identify the elements that adversely affect data sharing in scholarly research, a definitive framework remains unclear. Several theories have been presented to explain this shortfall; however, the reasons are highly diverse. Some …

Using Mobile Phones For Teaching And Learning In Chinese Traditional Undergraduate Education, Guchun Huang

CCAC Theses and Dissertations

Mobile learning is the new global trend of educational innovation with information and communication technologies. Mobile phones are one major type of mobile technology that can be used for mobile learning. As a highly popular possession among Chinese undergraduate students, as well as among general population, mobile phone usage for learning purposes in the context of Chinese traditional undergraduate education warrants attention from both the education practitioners and researchers. However, very few institutional efforts of promoting mobile phone integrated learning have been reported within the scope of Chinese traditional undergraduate education. A qualitative phenomenological research study was conducted with the …

Using Diversity Ensembles With Time Limits To Handle Concept Drift, Robert M. Van Camp

CCAC Theses and Dissertations

While traditional supervised learning focuses on static datasets, an increasing amount of data comes in the form of streams, where data is continuous and typically processed only once. A common problem with data streams is that the underlying concept we are trying to learn can be constantly evolving. This concept drift has been of interest to researchers the last few years and there is a need for improved machine learning algorithms that are capable of dealing with concept drifts. A promising approach involves using an ensemble of a diverse set of classifiers. The constituent classifiers are re-trained when a concept …

Assistive Technology Instruction In Teacher Professional Development, David N. Schaaf

CCAC Theses and Dissertations

Teachers who work with exceptional students have a critical responsibility to ensure these students receive the best possible education. A major part of the students’ education is the implementation of assistive technology in the classroom. Unfortunately, many teachers begin their career with limited knowledge of assistive technology. Therefore, they are dependent on building their knowledge base from other sources. The results of an assessment of one source, professional development courses, are reported. To assess the effectiveness of the professional development program, a comprehensive prescription was developed to identify gaps in the course objectives and make recommendations to improve the program. …

Assessing Knowledge Management Values By Using Intellectual Capital To Measure Organizational Performance, Thuan L. Nguyen

CCAC Theses and Dissertations

Measuring knowledge management performance was one of, if not the most challenging knowledge management activities. This study suggested using intellectual capital as a proxy for knowledge management performance in evaluating its impact on organizational performance. The Value Added Intellectual Coefficient model was employed to measure intellectual capital. Although being used widely in research, the model had its limitations. Also, for intellectual capital measurement, there was a lack of guidelines supported by empirical evidence or best practices. The present study aimed to test the classic and a modified version of this model, and based on the results, shed light on whether …

An Investigation Of Factors That Influence Registered Nurses’ Intentions To Use E-Learning Systems In Completing Higher Degrees In Nursing, Pauline G. Little

CCAC Theses and Dissertations

There is an increasing demand for more baccalaureate- and graduate-prepared registered nurses in the United States, to face the healthcare challenges of the 21st century. As a strategy to meet this need, educational institutions are expanding electronic learning in nursing education; however, technology acceptance in education continues to be a concern for educational institutions. In this context, the goal of the study was to investigate factors that potentially influence registered nurses’ intentions to adopt e-learning systems. A theoretical model was used to determine whether perceived value, attitude toward e-learning systems, and resistance to change influence registered nurses’ intentions to use …

Five-Factor Model As A Predictor For Spoken Dialog Systems, Teresa G. Carter

CCAC Theses and Dissertations

Human behavior varies widely as does the design of spoken dialog systems (SDS). The search for predictors to match a user’s preference and efficiency for a specific dialog interface type in an SDS was the focus of this research. By using personality as described by the Five-Factor Method (FFM) and the Wizard of Oz technique for delivering three system initiatives of the SDS, participants interacted with each of the SDS initiatives in scheduling an airline flight. The three system initiatives were constructed as strict system, which did not allow the user control of the interaction; mixed system, which allowed the …

An Empirical Investigation Of The Willingness Of Us Intelligence Community Analysts To Contribute Knowledge To A Knowledge Management System (Kms) In A Highly Classified And Sensitive Environment, Robert Hambly

CCAC Theses and Dissertations

Since September 11, 2001, the United States Government (USG) has possessed unparalleled capability in terms of dedicated intelligence and information collection assets supporting the analysts of the Intelligence Community (IC). The USG IC has sponsored, developed, and borne witness to extraordinary advances in technology, techniques, and procedures focused on knowledge harvesting, knowledge sharing, and collaboration. Knowledge, within successful (effective & productive) organizations, exists as a commodity; a commodity that can be created, captured, imparted, shared, and leveraged. The research problem that this study addressed is the challenge of maintaining strong organizational effectiveness and productivity through the use of an information …

Assessing The Effectiveness Of A Fingerprint Biometric And A Biometric Personal Identification Number (Bio-Pin™) When Used As A Multi-Factor Authentication Mechanism, Robert B. Batie

CCAC Theses and Dissertations

The issue of traditional user authentication methods, such as username/passwords, when accessing information systems, the Internet, and Web-based applications still pose significant vulnerabilities. The problem of user authentication including physical and logical access appears to have limited, if any, coverage in research from the perspective of biometric as ‘something the user knows.’ Previous methods of establishing ones’ identity by using a password, or presenting a token or identification (ID) card are vulnerable to circumvention by misplacement or unauthorized sharing. The need for reliable user authentication techniques has increased in the wake of heightened concerns about information security and rapid advancements …

Improved Direct Power Control For 3-Level Ac/Dc Converter Under Unbalanced And/Or Distorted Voltage Source Conditions, Imad Merzouk, Mohamed Lokmane Bendaas

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, an improved direct power control with space vector modulation for a 3-phase 3-level neutral point clamped converter supplied by unbalanced and/or distorted grid voltage is proposed. The main objective of the control scheme is to obtain balanced and sinusoidal input current with unity power factor under nonideal voltage supply. To achieve the control objectives, compensated active and reactive powers are calculated and added to the referencing one. A theoretical analysis of active and reactive power under a nonideal source is clearly demonstrated. In order to calculate the compensated powers, the extraction of positive, negative, and harmonic sequences …

Theoretical Analysis Of Doping Management And Its Effects On Power Scaling, Ami̇ra Tandi̇rovi̇ç Gürsel, Parvi̇z Elahi̇, Fati̇h Ömer İlday, Mustafa Sadetti̇n Özyazici

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.

A Robust Bayesian Inference-Based Channel Estimation In Power Line Communication Systems Contaminated By Impulsive Noise, Mohammad Asadpour, Behzad Mozaffari Tazehkand, Hadi Seyedarabi

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.

Studies On The Application Of Wavelet Families For A High Impedance Fault Location Algorithm In A Distribution Network, Mohd Syukri Ali, Ab Halim Abu Bakar, Chia Kwang Tan, Hazlie Mokhlis, Hamzah Arof

Turkish Journal of Electrical Engineering and Computer Sciences

Detecting high impedance faults in a distribution network is a great challenge and locating one is even more challenging. This paper will present an enhanced high impedance fault location algorithm based on the database technique. This paper is an extension of a faulty section identification algorithm developed previously. However, in this paper, the performance of the previous algorithm is investigated first in terms of different sampling rate and window size. Then these parameters will be used as a standard parameter to study the effectiveness of different types of mother wavelets. Each mother wavelet will be used to extract important features …

Automatically Defined Templates For Improved Prediction Of Non-Stationary, Nonlinear Time Series In Genetic Programming, David Moskowitz

CCAC Theses and Dissertations

Soft methods of artificial intelligence are often used in the prediction of non-deterministic time series that cannot be modeled using standard econometric methods. These series, such as occur in finance, often undergo changes to their underlying data generation process resulting in inaccurate approximations or requiring additional human judgment and input in the process, hindering the potential for automated solutions.

Genetic programming (GP) is a class of nature-inspired algorithms that aims to evolve a population of computer programs to solve a target problem. GP has been applied to time series prediction in finance and other domains. However, most GP-based approaches to …

Use Of Student Created Video Podcasts To Promote Foreign Language Grammar Acquisition In Middle School, Sergio Parra

CCAC Theses and Dissertations

The use of video podcasts in education has emerged as a phenomenon that has gained a considerable amount of attention over the last few years. Although video podcasting is becoming a well-established technology in higher education, new multimedia instructional strategies such as student-created video podcasts in grades K-12 are under-researched.

The study investigated the effects of video podcasts created by students to promote foreign language grammar acquisition at the middle school level and find how students described such experience. The current investigation was conducted by using the explanatory sequential design, which is a mixed methods research design that occurs in …

Effective Teaching Practices In Online Higher Education, Kim Mcmurtry

CCAC Theses and Dissertations

In the context of continuing growth in online higher education in the United States, students are struggling to succeed, as evidenced by lower course outcomes and lower retention rates in online courses in comparison with face-to-face courses. The problem identified for investigation is how university instructors can ensure that effective teaching and learning is happening in their online courses. The research questions were:

1. What are the best practices of effective online teaching in higher education according to current research?
2. How do exemplary online instructors enact teaching presence in higher education?
3. What are the best practices of effective online teaching in …