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Articles 1861 - 1890 of 7251
Full-Text Articles in Databases and Information Systems
Activity Based Traffic Indicator System For Monitoring The Covid-19 Pandemic, Justin Junsay, Aaron Joaquin Lebumfacil, Ivan George Tarun, William Emmanuel S. Yu
Activity Based Traffic Indicator System For Monitoring The Covid-19 Pandemic, Justin Junsay, Aaron Joaquin Lebumfacil, Ivan George Tarun, William Emmanuel S. Yu
Department of Information Systems & Computer Science Faculty Publications
This study describes an activity based traffic indicator system to provide information for COVID-19 pandemic management. The activity based traffic indicator system does this by utilizing a social probability model based on the birthday paradox to determine the exposure risk, the probability of meeting someone infected (PoMSI). COVID-19 data, particularly the 7-day moving average of the daily growth rate of cases (7-DMA of DGR) and cumulative confirmed cases of next week covering a period from April to September 2020, were then used to test PoMSI using Pearson correlation to verify whether it can be used as a factor for the …
Mobile Commerce, Crowd Commerce, And Stage Models: Reviewing And Expanding On Tp Liang’S Research, Sihua Chen, Mikko Siponen, Wael Soliman, Cao Xin, Keng Siau
Mobile Commerce, Crowd Commerce, And Stage Models: Reviewing And Expanding On Tp Liang’S Research, Sihua Chen, Mikko Siponen, Wael Soliman, Cao Xin, Keng Siau
Research Collection School Of Computing and Information Systems
In this paper, we review a few key themes of Ting-Peng (TP) Liang’s research. We first discuss some of his major contributions to information systems (IS) in the areas of electronic commerce, mobile commerce, and crowd commerce. Future research directions for these three themes are also discussed in the paper. TP Liang is also an early proponent of stage models although this stream of research has yet to receive the importance it deserves in the IS community. Previous seminal theoretical accounts in IS have generally separated variance and process models, the latter is useful in modeling changes in the explanatory …
Proxy-Free Privacy-Preserving Task Matching With Efficient Revocation In Crowdsourcing, Jiangang Shu, Kan Yang, Xiaohua Jia, Ximeng Liu, Cong Wang, Robert H. Deng
Proxy-Free Privacy-Preserving Task Matching With Efficient Revocation In Crowdsourcing, Jiangang Shu, Kan Yang, Xiaohua Jia, Ximeng Liu, Cong Wang, Robert H. Deng
Research Collection School Of Computing and Information Systems
Task matching in crowdsourcing has been extensively explored with the increasing popularity of crowdsourcing. However, privacy of tasks and workers is usually ignored in most of exiting solutions. In this paper, we study the problem of privacy-preserving task matching for crowdsourcing with multiple requesters and multiple workers. Instead of utilizing proxy re-encryption, we propose a proxy-free task matching scheme for multi-requester/multi-worker crowdsourcing, which achieves task-worker matching over encrypted data with scalability and non-interaction. We further design two different mechanisms for worker revocation including ServerLocal Revocation (SLR) and Global Revocation (GR), which realize efficient worker revocation with minimal overhead on the …
Adversarial Specification Mining, Hong Jin Kang, David Lo
Adversarial Specification Mining, Hong Jin Kang, David Lo
Research Collection School Of Computing and Information Systems
There have been numerous studies on mining temporal specifications from execution traces. These approaches learn finite-state automata (FSA) from execution traces when running tests. To learn accurate specifications of a software system, many tests are required. Existing approaches generalize from a limited number of traces or use simple test generation strategies. Unfortunately, these strategies may not exercise uncommon usage patterns of a software system. To address this problem, we propose a new approach, adversarial specification mining, and develop a prototype, DICE (Diversity through Counter-Examples). DICE has two components: DICE-Tester and DICE-Miner. After mining Linear Temporal Logic specifications from an input …
Novel Techniques In Recovering, Embedding, And Enforcing Policies For Control-Flow Integrity, Yan Lin
Novel Techniques In Recovering, Embedding, And Enforcing Policies For Control-Flow Integrity, Yan Lin
Dissertations and Theses Collection (Open Access)
Control-Flow Integrity (CFI) is an attractive security property with which most injected and code-reuse attacks can be defeated, including advanced attacking techniques like Return-Oriented Programming (ROP). CFI extracts a control-flow graph (CFG) for a given program and instruments the program to respect the CFG. Specifically, checks are inserted before indirect branch instructions. Before these instructions are executed during runtime, the checks consult the CFG to ensure that the indirect branch is allowed to reach the intended target. Hence, any sort of controlflow hijacking would be prevented. There are three fundamental components in CFI enforcement. The first component is accurately recovering …
Leadership Strategies For Implementing Telemedicine Technology In Rural Hospitals To Improve Profitability, Chikezie Ralph Waturuocha
Leadership Strategies For Implementing Telemedicine Technology In Rural Hospitals To Improve Profitability, Chikezie Ralph Waturuocha
Walden Dissertations and Doctoral Studies
Ineffective leadership strategies can negatively impact telemedicine technology implementation in rural hospitals, which may hinder profitability. Rural hospital administrators who struggle to implement telemedicine technology for improved profitability are at high risk of experiencing patient health outcomes failure. Grounded in the technology acceptance model, the purpose of this qualitative single case study was to explore leadership strategies rural hospital leaders use to implement telemedicine technology to improve profitability. The participants were five health care administrators of a rural hospital in a Midwest U.S. state who successfully implemented telemedicine technology to improve profitability. Sources for data collection were semistructured interviews and …
Information Technology Resources For Precision Medicine, Nicholas L. Bertram
Information Technology Resources For Precision Medicine, Nicholas L. Bertram
Walden Dissertations and Doctoral Studies
Healthcare delivery organizations have an opportunity to use insights from the emerging field of precision medicine to improve the quality of patient care; however, information technology resources to fully enable precision medicine are lacking. The specific problem was that people have limited information to use when making decisions regarding information technology resources for precision medicine in healthcare delivery organizations given the emerging state of precision medicine. The purpose of this Delphi study was to determine how a panel of precision medicine information technology experts view information technology resource importance and feasibility for precision medicine in healthcare delivery organizations. The research …
Exploring The Value Of Technology Within Cross-Departmental Communications, Brian J. Luckey
Exploring The Value Of Technology Within Cross-Departmental Communications, Brian J. Luckey
Walden Dissertations and Doctoral Studies
While many midsized businesses have invested in technology to support business operations, most have not realized the potential value of using technology to collaborate cross-departmentally. There is a lack of knowledge concerning strategies for using technology to facilitate effective organizational communications, which has resulted in operating technology investments being made without corresponding investments in communication technologies. The purpose of this qualitative case study was to fill the knowledge gap concerning the impact of technology for cross-departmental communications. The theoretical foundation for this study was based on systems theory, organizational theory, and stakeholder theory. The key research question involved the impact …
Insider Threats' Behaviors And Data Security Management Strategies, Gladys C. Cooley
Insider Threats' Behaviors And Data Security Management Strategies, Gladys C. Cooley
Walden Dissertations and Doctoral Studies
As insider threats and data security management concerns become more prevalent, the identification of risky behaviors in the workplace is crucial for the privacy of individuals and the survival of organizations. The purpose of this three-round qualitative Delphi study was to identify real-time consensus among 25 information technology (IT) subject matter experts (SMEs) in the Washington metropolitan area about insider threats and data security management. The SMEs participating in this study were adult IT professionals and senior managers with certification in their area of specialization and at least 5 years of practical experience. The dark triad theory was the conceptual …
The Digitization Of Court Processes In African Regional And Subregional Judicial Institutions, Frederic Drabo
The Digitization Of Court Processes In African Regional And Subregional Judicial Institutions, Frederic Drabo
Walden Dissertations and Doctoral Studies
Despite information technology (IT) officers’ multiple efforts to develop reliable and efficient electronic justice (e-justice) systems, digitizing court processes still presents several quality challenges associated with IT infrastructure and literacy issues. Grounded in the principles of total quality management, the purpose of this qualitative multiple case study was to identify strategies and best practices IT officers in African regional economic communities (REC) use for digitizing regional and subregional court processes to improve African e-justice systems. The participants included four IT officers working as assistant computer system analysts (ACSA), computer system analysts (CSA), and heads of IT (HIT) in regional and …
A Multicase Study Of Critical Success Factors Of Self-Service Business Intelligence Initiatives, Eva Shepherd
A Multicase Study Of Critical Success Factors Of Self-Service Business Intelligence Initiatives, Eva Shepherd
Walden Dissertations and Doctoral Studies
Information technology (IT) managers have sparse information on the critical success factors (CSFs) needed for self-service business intelligence (SSBI) initiatives among casual users. The purpose of this qualitative, multicase study was to describe Business Intelligence (BI) experts’ views on the CSFs needed for self-service BI initiatives among casual users in the post-implementation stage. To meet this purpose, a multicase study design was used to collect data from a purposeful sample of 10 BI experts. Semistructured interviews, archival data, and reflective field notes drove the credibility of the multicase study’s findings through data triangulation. Two conceptual models framed this study: Lennerholt …
Creators And Backers In Rewards-Based Crowdfunding: Will Incentive Misalignment Affect Kickstarter's Sustainability?, Michael Wessel, Rob Gleasure, Robert John Kauffman
Creators And Backers In Rewards-Based Crowdfunding: Will Incentive Misalignment Affect Kickstarter's Sustainability?, Michael Wessel, Rob Gleasure, Robert John Kauffman
Research Collection School Of Computing and Information Systems
Incentive misalignment in rewards-based crowd-funding occurs because creators may benefit disproportionately from fundraising, while backers may benefit disproportionately from the quality of project deliverables. The resulting principal-agent relationship means backers rely on campaign information to identify signs of moral hazard, adverse selection, and risk attitude asymmetry. We analyze campaign information related to fundraising, and compare how different information affects eventual backer satisfaction, based on an extensive dataset from Kickstarter. The data analysis uses a multi-model comparison to reveal similarities and contrasts in the estimated drivers of dependent variables that capture different outcomes in Kickstarter’s funding campaigns, using a linear probability …
Smart Contracts: Will Fintech Be The Catalyst For The Next Global Financial Crisis?, Randall Duran, Paul Griffin
Smart Contracts: Will Fintech Be The Catalyst For The Next Global Financial Crisis?, Randall Duran, Paul Griffin
Research Collection School Of Computing and Information Systems
Purpose: This paper aims to examine the risks associated with smart contracts, a disruptive financial technology (FinTech) innovation, and assesses how in the future they could threaten the integrity of the global financial system. Design/methodology/approach: A qualitative approach is used to identify risk factors related to the use of new financial innovations, by examining how over-the-counter (OTC) derivatives contributed to the Global Financial Crisis (GFC) which occurred during 2007 and 2008. Based on this analysis, the potential for similar concerns with smart contracts are evaluated, drawing on the failure of The DAO on the Ethereum blockchain, which involved the loss …
Learning Adl Daily Routines With Spatiotemporal Neural Networks, Shan Gao, Ah-Hwee Tan, Rossi Setchi
Learning Adl Daily Routines With Spatiotemporal Neural Networks, Shan Gao, Ah-Hwee Tan, Rossi Setchi
Research Collection School Of Computing and Information Systems
The activities of daily living (ADLs) refer to the activities performed by individuals on a daily basis and are the indicators of a person’s habits, lifestyle, and wellbeing. Learning an individual’s ADL daily routines has significant value in the healthcare domain. Specifically, ADL recognition and inter-ADL pattern learning problems have been studied extensively in the past couple of decades. However, discovering the patterns performed in a day and clustering them into ADL daily routines has been a relatively unexplored research area. In this paper, a self-organizing neural network model, called the Spatiotemporal ADL Adaptive Resonance Theory (STADLART), is proposed for …
Attribute-Aware Pedestrian Detection In A Crowd, Jialiang Zhang, Lixiang Lin, Jianke Zhu, Yang Li, Yun-Chen Chen, Yao Hu, Steven C. H. Hoi
Attribute-Aware Pedestrian Detection In A Crowd, Jialiang Zhang, Lixiang Lin, Jianke Zhu, Yang Li, Yun-Chen Chen, Yao Hu, Steven C. H. Hoi
Research Collection School Of Computing and Information Systems
Pedestrian detection is an initial step to perform outdoor scene analysis, which plays an essential role in many real-world applications. Although having enjoyed the merits of deep learning frameworks from the generic object detectors, pedestrian detection is still a very challenging task due to heavy occlusions, and highly crowded group. Generally, the conventional detectors are unable to differentiate individuals from each other effectively under such a dense environment. To tackle this critical problem, we propose an attribute-aware pedestrian detector to explicitly model people's semantic attributes in a high-level feature detection fashion. Besides the typical semantic features, center position, target's scale, …
Analyzing Tweets On New Norm: Work From Home During Covid-19 Outbreak, Swapna Gottipati, Kyong Jin Shim, Hui Hian Teo, Karthik Nityanand, Shreyansh Shivam
Analyzing Tweets On New Norm: Work From Home During Covid-19 Outbreak, Swapna Gottipati, Kyong Jin Shim, Hui Hian Teo, Karthik Nityanand, Shreyansh Shivam
Research Collection School Of Computing and Information Systems
The COVID-19 pandemic triggered a large-scale work-from-home trend globally in recent months. In this paper, we study the phenomenon of “work-from-home” (WFH) by performing social listening. We propose an analytics pipeline designed to crawl social media data and perform text mining analyzes on textual data from tweets scrapped based on hashtags related to WFH in COVID-19 situation. We apply text mining and NLP techniques to analyze the tweets for extracting the WFH themes and sentiments (positive and negative). Our Twitter theme analysis adds further value by summarizing the common key topics, allowing employers to gain more insights on areas of …
The Value Of Humanization In Customer Service, Yang Gao, Huaxia Rui, Shujing Sun
The Value Of Humanization In Customer Service, Yang Gao, Huaxia Rui, Shujing Sun
Research Collection School Of Computing and Information Systems
As algorithm-based agents become increasingly capable of handling customer service queries, customers are often uncertain whether they are served by humans or algorithms, and managers are left to question the value of human agents once the technology matures. The current paper studies this question by quantifying the impact of customers' enhanced perception of being served by human agents on customer service interactions. Our identification strategy hinges on the abrupt implementation by Southwest Airlines of a signature policy, which requires the inclusion of an agent's first name in responses on Twitter, thereby making the agent more humanized in the eyes of …
Information Technology Service Continuity Practices In Disadvantaged Business Enterprises, Allen Edward Raub
Information Technology Service Continuity Practices In Disadvantaged Business Enterprises, Allen Edward Raub
Walden Dissertations and Doctoral Studies
Disadvantaged business enterprises (DBEs) not using cloud solutions to ensure information technology (IT) service continuity may not withstand the impacts of IT disruption caused by human-made and natural disasters. The loss of critical IT resources leads to business closure and a resource loss for the community, employees, and families. Grounded in the technology acceptance model, the purpose of this qualitative multiple case study was to explore strategies IT leaders in DBEs use to implement cloud solutions to minimize IT disruption. Participants included 16 IT leaders in DBEs in the U.S. state of Maryland. Data were generated through semi-structured interviews and …
Reliable Data Collection: A Tool For Data Integrity In Nigeria, Stella Tonye Whyte
Reliable Data Collection: A Tool For Data Integrity In Nigeria, Stella Tonye Whyte
Walden Dissertations and Doctoral Studies
Unreliable and poor-quality data is a significant threat to governmental institutions because of its devastating impact on nations' social and economic well-being. Managers in government organizations require reliable data to inform economic planning and decision-making. Grounded in the theory of total quality management, the purpose of this qualitative multiple case study was to explore strategies information technology (IT) managers in sub-Saharan African countries use to ensure the reliability of data. The participants were 12 IT managers in three government establishments in Port Harcourt, Rivers State, Nigeria, responsible for ensuring the data reliability for economic planning and decision-making. The data collection …
Mitigating It Security Risk In United States Healthcare: A Qualitative Examination Of Best Practices, Joann Hemann
Mitigating It Security Risk In United States Healthcare: A Qualitative Examination Of Best Practices, Joann Hemann
Walden Dissertations and Doctoral Studies
AbstractCyberattacks are ranked as third in the top 10 highest global threats in terms of likelihood, ranked after extreme weather events and natural disasters. Traditional technology risk management plans for preventative, detective, and recovery measures have failed to mitigate cybersecurity risks created by new technologies. The social problem addressed was the impact of cybercrime to the healthcare industry. The purpose of this qualitative classical Delphi study was to determine how a panel of 25 healthcare cybersecurity experts, based in the United States, viewed the desirability, feasibility, and importance of information technology (IT) cybersecurity risk mitigation techniques. The conceptual framework selected …
Security Strategies Information Technology Security Mangers Use In Deploying Blockchain Applications, Prince Nana Yaw Gyedu Nkrumah
Security Strategies Information Technology Security Mangers Use In Deploying Blockchain Applications, Prince Nana Yaw Gyedu Nkrumah
Walden Dissertations and Doctoral Studies
Blockchain is seen as a potential game-changer in many industries and a transformational technology in the 21st century. However, security concerns have made blockchain technology adoption relatively slow. Massive security breaches in cryptocurrency, an example of blockchain technology, have caused organizations to lose $11.3 billion in illegal transactions, exacerbating these security concerns for information technology (IT) security managers who are worried about the safety of blockchain. Grounded in the routine activity theory, the purpose of this multiple case study was to explore strategies used by IT security managers to deploy blockchain applications securely. The participants were 4 IT security managers …
Enhancing Employee Engagement To Improve Financial Performance, Christine Lamacchia
Enhancing Employee Engagement To Improve Financial Performance, Christine Lamacchia
Walden Dissertations and Doctoral Studies
Business leaders are negatively affected when many employees are not engaged in their jobs. Business leaders who struggle to achieve employee engagement suffer decreased profitability, sales, employee retention, and customer satisfaction. Grounded in employee engagement theory, the purpose of this qualitative single case study was to explore strategies IT business leaders use to engage employees. The participants were five IT business leaders who successfully developed strategies to engage employees. Data were collected from semistructured interviews, company documents, and artifacts. Thematic analysis was used to analyze the data. Two themes emerged: creating a company culture conducive to employee engagement and using …
Implementation Strategies For Modeling And Simulation In Military Organizations, Cody Lynn Taylor
Implementation Strategies For Modeling And Simulation In Military Organizations, Cody Lynn Taylor
Walden Dissertations and Doctoral Studies
Some IT project managers working for U.S. military organizations are struggling to implement modern modeling and simulation (M&S) technology. Implementation strategies are needed to help IT practitioners deliver meaningful simulations and models that ultimately help senior leaders make logical and science-based decisions. Grounded in the extended technology acceptance model, the purpose of this qualitative multiple-case study was to explore strategies some IT project managers supporting U.S. military organizations use to implement modern M&S technology. The participants included 10 civil servants who successfully implemented modeling and simulation technology for military organizations located in the United States eastern region. Data was collected …
Mobile Network Infrastructure Security In Developing Countries – A Kenya Case Study, James M. Omanwa
Mobile Network Infrastructure Security In Developing Countries – A Kenya Case Study, James M. Omanwa
Walden Dissertations and Doctoral Studies
The usage of mobile network infrastructure to access internet resources for organizations is getting higher year by year in sub-Saharan Africa. However, there was an increase in malicious attacks on mobile networks and devices accessing mobile network infrastructure, targeting organizations’ private information. Grounded in Bandura’s social cognitive theory, the purpose of this multiple case study was to explore strategies security managers used to secure mobile network infrastructures from cyberattacks. Participants comprised four security managers in Kenya in two major cities who successfully implemented strategies to mitigate cyberattacks on the mobile network infrastructures. Data were gathered from video conference, face-to-face, semi-structured …
Knowledge Workers’ Daily Experiences With Technostress And Presenteeism: A Single Case Study, Teresa Himes Mcgovern
Knowledge Workers’ Daily Experiences With Technostress And Presenteeism: A Single Case Study, Teresa Himes Mcgovern
Walden Dissertations and Doctoral Studies
Despite the prominence of Information and Communication Technologies (ICT)-enabled technostress in organizations, there is a gap in the literature on how knowledge workers cope with technostress, and managers know little about the interface of ICT-induced presenteeism on employee productivity. The overarching research question was developed to address the purpose of this qualitative single case study with embedded units, which was to understand the perceptions of knowledge workers on the interface of technostress and ICT-induced presenteeism on their work productivity. This study was framed by the concept of presenteeism developed by Lohaus and Habermann within their comprehensive presenteeism model, a decision-integrated …
Mobile Technology Use By Rural Farmers And Herders, Mohamed Ali
Mobile Technology Use By Rural Farmers And Herders, Mohamed Ali
Walden Dissertations and Doctoral Studies
Mobile technology business leaders from many mobile technology companies practice digital apartheid when improving rural farmers' communication and technology infrastructure in developing countries. Mobile technology business leaders who do not effectively plan mobile technology infrastructure deployment to rural farmers and herders are at a high risk of failure. Grounded in adaptive structuration theory of technology, the purpose of this qualitative multiple case study was to explore strategies mobile technology business leaders used to improve the mobile technology infrastructure for rural farmers and herders in the United Republic of Tanzania. The participants comprised three mobile technology business leaders from three different …
Characteristics Of Authentic Entrepreneurial Leadership Within Information Technology Startups In Kenya, Christine Mukhwana
Characteristics Of Authentic Entrepreneurial Leadership Within Information Technology Startups In Kenya, Christine Mukhwana
Walden Dissertations and Doctoral Studies
In Kenya, over 60% of nascent entrepreneurs start businesses with minimal leadership experience, engendering founder-CEOs who cannot sustain a business beyond its formative years. The problem is the nascent entrepreneurs’ lack of understanding of effective leadership. The purpose of this qualitative, phenomenological study was to develop a more nuanced understanding of authentic leadership behavior from the perspective of nascent entrepreneurs. Authentic leadership theory and the three-factor model were used to conceptualize the study. The research question focused on nascent entrepreneurs’ lived experiences and understanding of authentic leadership. The participants in the study were entrepreneurs from the information technology industry in …
Meaningful Use Criteria And Staff Accountability In An Office Setting, Marcia Ionie Pender
Meaningful Use Criteria And Staff Accountability In An Office Setting, Marcia Ionie Pender
Walden Dissertations and Doctoral Studies
Proper documentation for meaningful use (MU) criteria within electronic health records (EHRs) was identified as an issue for office staff at a local primary care office in a metropolitan area of Central Florida. The project question addressed the local gap in knowledge about MU standards necessary to ensure correct documentation of EHRs. The purpose of this doctoral project was to provide an educational program for staff to ensure compliance with the HITECH Act of 2009. Lewin’s Change Theory and Knowles Theory of Adult learning were the conceptual foundations for the educational program. The project question was to determine whether a …
Strategies For Applying Electronic Health Records To Improve Patient Care And Increase Profitability, Fritzgerald Paul
Strategies For Applying Electronic Health Records To Improve Patient Care And Increase Profitability, Fritzgerald Paul
Walden Dissertations and Doctoral Studies
AbstractIneffective strategies to implement electronic health record keeping systems can negatively impact patient care and increase expenses. Hospital administrators and primary care physicians care about this problem because they would be penalized for not meeting meaningful use guidelines. Grounded in the information systems success model, the purpose of this qualitative multiple case study was to explore electronic health record (EHR) implementation strategies primary care physicians use to improve patient care and increase profitability. The participants comprised five primary care physicians involved in the effective implementation of an EHR application in the central coast region of California. Data were collected from …
Strategies To Monitor And Deter Cyberloafing In Small Businesses: A Case Study, Veronica Pugh Dooly
Strategies To Monitor And Deter Cyberloafing In Small Businesses: A Case Study, Veronica Pugh Dooly
Walden Dissertations and Doctoral Studies
Some information technology (IT) managers working for small businesses are struggling to monitor and deter cyberloafing. Strategies are needed to help IT practitioners to discourage cyberloafing and improve productivity while maintaining employee satisfaction. Grounded in adaptive structuration theory, the purpose of this qualitative multiple-case study was to explore strategies some small business IT managers use to monitor and deter cyberloafing. The participants were nine IT managers who successfully implemented cyberloafing monitoring and deterrence strategies in the United States. Data were collected via semistructured interviews and organization employee policy handbooks (n = 4) provided by the participants. Data were analyzed using …