Databases and Information Systems Commons^™

Page-Net: Interpretable And Integrative Deep Learning For Survival Analysis Using Histopathological Images And Genomic Data, Jie Hao, Sai Chandra Kosaraju, Nelson Zange Tsaku, Dae Hyun Song, Mingon Kang

Computer Science Faculty Research

The integration of multi-modal data, such as histopathological images and genomic data, is essential for understanding cancer heterogeneity and complexity for personalized treatments, as well as for enhancing survival predictions in cancer study. Histopathology, as a clinical gold-standard tool for diagnosis and prognosis in cancers, allows clinicians to make precise decisions on therapies, whereas high-throughput genomic data have been investigated to dissect the genetic mechanisms of cancers. We propose a biologically interpretable deep learning model (PAGE-Net) that integrates histopathological images and genomic data, not only to improve survival prediction, but also to identify genetic and histopathological patterns that cause different …

Dynamic Allocation/Reallocation Of Dark Cores In Many-Core Systems For Improved System Performance, Xingxing Huang, Xiaohang Wang, Yingtao Jiang, Amit Kumar Singh, Mei Yang

Electrical & Computer Engineering Faculty Research

A significant number of processing cores in any many-core systems nowadays and likely in the future have to be switched off or forced to be idle to become dark cores, in light of ever increasing power density and chip temperature. Although these dark cores cannot make direct contributions to the chip's throughput, they can still be allocated to applications currently running in the system for the sole purpose of heat dissipation enabled by the temperature gradient between the active and dark cores. However, allocating dark cores to applications tends to add extra waiting time to applications yet to be launched, …

The Trust Principles For Digital Repositories, Dawei Lin, Jonathan Crabtree, Ingrid Dillo, Robert R. Downs, Rorie Edmunds, David Giaretta, Marisa De Giusti, Hervé L'Hours, Wim Hugo, Reyna Jenkyns, Varsha Khodiyar, Maryann E. Martone, Mustapha Mokrane, Vivek Navale, Jonathan Petters, Barbara Sierman, Dina V. Sokolova, Martina Stockhause, John Westbrook

Copyright, Fair Use, Scholarly Communication, etc.

As information and communication technology has become pervasive in our society, we are increasingly dependent on both digital data and repositories that provide access to and enable the use of such resources. Repositories must earn the trust of the communities they intend to serve and demonstrate that they are reliable and capable of appropriately managing the data they hold.

Following a year-long public discussion and building on existing community consensus , several stakeholders, representing various segments of the digital repository community, have collaboratively developed and endorsed a set of guiding principles to demonstrate digital repository trustworthiness. Transparency, Responsibility, User focus, …

Optimal Feature Selection For Learning-Based Algorithms For Sentiment Classification, Zhaoxia Wang, Zhiping Lin

Research Collection School Of Computing and Information Systems

Sentiment classification is an important branch of cognitive computation—thus the further studies of properties of sentiment analysis is important. Sentiment classification on text data has been an active topic for the last two decades and learning-based methods are very popular and widely used in various applications. For learning-based methods, a lot of enhanced technical strategies have been used to improve the performance of the methods. Feature selection is one of these strategies and it has been studied by many researchers. However, an existing unsolved difficult problem is the choice of a suitable number of features for obtaining the best sentiment …

Cybersecurity Behavioural Model For Students In The Tertiary Institutions, Boluwatife Fatokun Faith

Student Works (2020-2029)

Humans are majorly identified as the weakest link in cybersecurity. Tertiary institution student’s face lot of cybersecurity issues due to their increased Internet exposure, however cybersecurity behavioural studies focusing on tertiary students is limited. This study focused on investigating tertiary institutions students’ cybersecurity behaviour, via validated cybersecurity factors, Perceived Vulnerability (PV); Perceived Barriers (PBr); Perceived Severity (PS); Security Self-Efficacy (SSE); Response Efficacy (RE); Cues to Action (CA); Peer Behaviour (PBhv); Computer Skills (CS); Internet Skills (IS); Prior Experience with Computer Security Practices (PE); Perceived Benefits (PBnf); and a newly added factor, Familiarity with Cyber-Threats (FCT), to explore the factors relationship …

A Study On Real-Time Database Technology And Its Applications, Geethmi Nimantha Dissanayake

Masters Theses

No abstract provided.

Strategies For Information Technology Employee Retention, Stephen Horton

Walden Dissertations and Doctoral Studies

Information technology (IT) employee retention is essential to IT departments tasked with supporting the goals and objectives of the organization. IT employees manage, support, and direct IT to drive business, pursue innovation, and create a competitive edge. The purpose of this qualitative exploratory multiple case study was to identify strategies that IT managers use to retain IT employees in order to support the goals and objectives of the IT organization. The population for this study consisted of 5 IT managers in the transportation industry. The IT managers selected for this study had subordinates and delegation duties and worked for employers …

Exploring Strategies For Recruiting And Retaining Diverse Cybersecurity Professionals, Vivian Lyon

Walden Dissertations and Doctoral Studies

The cyber threat landscape has led some cybersecurity leaders to focus on a holistic approach encompassing people, processes, and technology to make their government agencies and organizations more responsive to a more diverse and inclusive cyber workforce to protect critical infrastructure from hackers or cybercriminals intent on causing harm. This qualitative multiple case study used Schein’s organizational culture theory to explore strategies used by cybersecurity leaders to attract, recruit, and retain diverse cybersecurity professionals to effectively and efficiently protect sensitive systems from rising cyber threats. The study's population consisted of cybersecurity leaders from 3 government agencies and 9 organizations in …

Strategies For The Development Of It Disaster Recovery Plans In The Manufacturing Industry, Michael Landry Sartwell

Walden Dissertations and Doctoral Studies

Information technology (IT) leaders have reported technology disruptions because of natural disasters, terror attacks, or adversarial threats. Information technology leaders are concerned with technology disruptions, as these disruptions are costing organizations as much as $22,000 per minute. Grounded in Zachman’s framework, the purpose of this qualitative multiple case study was to explore strategies IT managers in the manufacturing industry use to develop IT disaster recovery (DR) plans to support business operations. The participants included 3 manufacturing IT professionals, 2 Department of Defense manufacturing infrastructure specialists, and 1outsourcing contractor, each from firms located in the central United States who successfully developed …

Developing Cloud Computing Infrastructures In Developing Countries In Asia, Daryoush Charmsaz Moghaddam

Walden Dissertations and Doctoral Studies

Developing Cloud Computing Infrastructures in Developing Countries in Asia

by

Daryoush Charmsaz Moghaddam

MS, Sharif University, 2005

BS, Civil Aviation Higher Education Complex, 1985

Doctoral Study Submitted in Partial Fulfillment

of the Requirements for the Degree of

Doctor of Information Technology

Walden University

March 2020

Small-To-Medium-Size Enterprise Managers’ Experiences With Cloud Computing, Anthony Effiong

Walden Dissertations and Doctoral Studies

Historically, managers of small- and medium-sized enterprises (SMEs) have had concerns regarding cloud computing and cybersecurity. Their resistance to using cloud computing has influenced their ability to do business effectively and to compete with businesses that use cloud computing. The purposes of this descriptive phenomenological study were to explore the lived experiences and perceptions of SME managers that might influence their decisions to adopt cloud computing. Watson’s concept of resistance to change and Davis, Bagozzi, and Warhaw’s technology acceptance model were the conceptual frameworks that guided this qualitative study. Data collection consisted of conducting 16 semi-structured interviews with open-ended questions …

Strategies For Implementing Successful It Security Systems In Small Businesses, Martins Donbruce Idahosa

Walden Dissertations and Doctoral Studies

Owners of small businesses who do not adequately protect business data are at high risk for a cyber attack. As data breaches against small businesses have increased, it has become a growing source of concern for consumers who rely on owners of small businesses to protect their data from data breaches. Grounded in general systems theory and routine activity approach, the focus of this qualitative multiple case study was to explore strategies used by owners of small businesses to protect confidential company data from cyber attacks. The process used for collecting data involved semistructured face-to-face interviews with 5 owners of …

Strategies For Increasing Employee Productivity In Small Technology Consulting Businesses, Dalinda Yvonne Milne

Walden Dissertations and Doctoral Studies

Unproductive employees in technology consulting small businesses negatively affect organizational output and profits. Investing in employee productivity is beneficial to ensuring an organization’s ability to improve their profits and sustainability as business leaders have an influential role in identifying and addressing the root causes of employee productivity issues in their organizations. The conceptual framework that grounded this doctoral study was Thomas Gilbert’s behavioral engineering model. The participants in this study consisted of 8 leaders in a Texas technology consulting small business with experience in increasing employee productivity. Data were collected through in-person semistructured interviews and business documents. Methodological triangulation was …

Tailored Information Security Strategies For Financial Services Companies In Nigeria, Kayode Alawonde

Walden Dissertations and Doctoral Studies

Some financial institutions in Nigeria have not deployed strategies that mitigate cyber exploitation risks in the financial services industry. Financial institution leaders are concerned because cyber exploitation contributed to the reduction in the adult banking population to a low 38%. Grounded in the integrated systems theory of information security management, the purpose of this multiple case study was to explore strategies some financial institution leaders in Nigeria use to prevent cyber exploitations. The participants included 6 chief information security officers of 6 financial institutions. Data were collected from semistructured interviews and company and public documents. A thematic analysis identified themes …

Exploring Strategies To Transition To Big Data Technologies From Dw Technologies, Mbah Johnas Fortem

Walden Dissertations and Doctoral Studies

As a result of innovation and technological improvements, organizations are now capable of capturing and storing massive amounts of data from various sources and domains. This increase in the volume of data resulted in traditional tools used for processing, storing, and analyzing large amounts of data becoming increasingly inefficient. Grounded in the extended technology acceptance model, the purpose of this qualitative multiple case study was to explore the strategies data managers use to transition from traditional data warehousing technologies to big data technologies. The participants included data managers from 6 organizations (medium and large size) based in Munich, Germany, who …

Strategies For It Product Managers To Manage Microservice Systems In Enterprises, Walter Zrzavy

Walden Dissertations and Doctoral Studies

Many information technology (IT) product managers have experienced significant challenges in adopting microservice architecture (MSA) systems successfully in their organizations. Inefficiencies resulting from MSA system adoption are of concern to IT product managers as these inefficiencies increase the cost of maintenance and increase the time to deliver software updates to the business. Grounded in the technology-organization-environment theory, the purpose of this qualitative multiple case study was to explore the strategies used by IT product managers for the domain-driven design and development and operations practices to reduce the inefficiencies during the MSA system adoption. The participants were 18 IT product managers …

Strategies To Digitize Business Processes, Mohamed Abdelmoneim

Walden Dissertations and Doctoral Studies

Information technology leaders with limited digitization strategies are less profitable than competitors in the same industry. Without digital strategies, information technology leaders suffer from manual business processes, which results in losing business opportunities. Grounded in general systems theory, the purpose of this multiple case study was to explore the strategies that 10 IT leaders used to transform business processes digitally at four different organizations in Ireland. Data were collected using semistructured face-to-face interviews. The second data source was organizational digitization documents. The 3 themes that emerged from thematic analysis were (a) strong digital leadership competencies, (b) digitally aligned with the …

Critical Success Factors For E-Government Web Services, Mark Alpern

Walden Dissertations and Doctoral Studies

Some municipal government leaders are unable to effectively implement e-government web services, which results in poor client satisfaction. Grounded in the critical success factor theory, the purpose of this qualitative multiple case study was to explore critical success factors managers use to build quality e-government web services. The participants included 3 managers in different municipalities within Ontario, Canada, who successfully implemented e-government web services. Data were collected through semistructured interviews and the review of organizational documents. Thematic analysis was conducted using Yin's 5-step data analysis method, and 5 themes emerged: client-centric government, change management, management support, client engagement, and external …

Effective Data Analytics And Security Strategies In Internal Audit Organizations, Desiree Auchey

Walden Dissertations and Doctoral Studies

The digitization of the corporate and regulatory environment presents an opportunity for internal audit organizations to change their audit techniques and increase their value to corporations. Audit functions have not kept pace with these advancements, as evidenced by the massive frauds in recent years, and current audit methodology does not robustly incorporate analytics and security of data. Grounded in agency theory, the purpose of this qualitative case study was to explore successful strategies business leaders use to implement data analytics and security for internal auditing and fraudulent activity. The participants comprised 3 audit leaders in Pennsylvania, who effectively used data …

Strategies To Mitigate The Effects Of Identity Theft In The Hospitality Industry, Patricia Lee Jirsa

Walden Dissertations and Doctoral Studies

Leaders in the U.S. hospitality industry experience significant losses in profitability, increased mitigation cost, and reduced revenues because of business and consumer identity theft. Grounded in the fraud triangle theory and the fraud diamond theory, the purpose of this qualitative multiple-case study was to explore strategies leaders in the hospitality industry use to mitigate identity theft. A purposeful sample of 5 leaders of 5 different hospitality businesses in Montana participated in the study. Data were collected through semistructured interviews, member checking, and a review of company documents. During data analysis using Yin’s 5-step process, 3 key themes emerged: a new …