Samir Chatterjee

A Design Science Research Methodology for Information Systems Research

The paper motivates, presents, demonstrates in use, and evaluates a methodology for conducting design science (DS) research in information systems (IS). DS is of importance in a discipline oriented to the creation of successful artifacts. Several researchers have pioneered DS research in IS, yet over the past 15 years, little DS research has been done within the discipline. The lack of a methodology to serve as a commonly accepted framework for DS research and of a template for its presentation may have contributed to its slow adoption. The design science research methodology (DSRM) presented here incorporates principles, practices, and procedures required to carry out such research and meets three objectives: it is consistent with prior literature, it provides a nominal process model for doing DS research, and it provides a mental model for presenting and evaluating DS research in IS. The DS process includes six steps: problem identification and motivation, definition of the objectives for a solution, design and development, demonstration, evaluation, and communication. We demonstrate and evaluate the methodology by presenting four case studies in terms of the DSRM, including cases that present the design of a database to support health assessment methods, a software reuse measure, an Internet video telephony application, and an IS planning method. The designed methodology effectively satisfies the three objectives and has the potential to help aid the acceptance of DS research in the IS discipline.

Design Research in Information Systems

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Design Science Research in Information Systems

Design activities are central to most applied disciplines. Research in design has a long history in many fields including architecture, engineering, education, psychology, and the fine arts (Cross 2001). The computing and information technology (CIT) field since its advent in the late 1940s has appropriated many of the ideas, concepts, and methods of design science that have originated in these other disciplines. However, information systems (IS) as composed of inherently mutable and adaptable hardware, software, and human interfaces provide many unique and challenging design problems that call for new and creative ideas.

A Taxonomy for RFID

RFID systems come in a myriad of forms, each catering to a specific need. However, a systematic classification to reduce the confusion of potential adopters, researchers and enthusiasts is still lacking. This article proposes and evaluates a taxonomy of various RFID systems currently available. The taxonomy can be used for gaining an understanding of this technology, the factors for implementation of a successful RFID system, its strengths and weaknesses as well as scalability options. Both novice as well as experienced RFID researchers will benefit from this classification.

Design of emerging digital services: a taxonomy

There has been a gigantic shift from a product based economy to one based on services, specifically digital services. From every indication it is likely to be more than a passing fad and the changes these emerging digital services represent will continue to transform commerce and have yet to reach market saturation. Digital services are being designed for and offered to users, yet very little is known about the design process that goes behind these developments. Is there a science behind designing digital services? By examining 12 leading digital services, we have developed a design taxonomy to be able to classify and contrast digital services. What emerged in the taxonomy were two broad dimensions; a set of fundamental design objectives and a set of fundamental service provider objectives. This paper concludes with an application of the proposed taxonomy to three leading digital services. We hope that the proposed taxonomy will be useful in understanding the science behind the design of digital services.

A Taxonomy of Telemedicine Efforts with Respect to Applications, Infrastructure, Delivery Tools, Type of Setting and Purpose

In the history of telemedicine, various definitions have been published and numerous terminologies have been coined. The introduction of new technologies played an important role in the changing definitions. After three decades of experience in telemedicine and its variations, the need for a single taxonomy that is detailed enough to define all the terms introduced until today is evident. Taxonomy we propose takes into account purpose, application area, delivery tools, communication infrastructure, and delivery setting dimensions. The purpose is to create a taxonomy that can explain how these dimensions fit together. Our taxonomy helps to categorize and compare current/future telemedicine efforts and plan several emerging telemedicine scenarios using new technology. The paper concludes with an explanation of how the proposed taxonomy can be used by parties involved in telemedicine as a diagnostic tool, and can help them to understand their needs and capabilities for participating in next generation healthcare environments.

Electronic Medical Records: A Review Comparing the Challenges in Developed and Developing Countries

Studies on the adaptation of electronic medical and personal health records in developing countries are scarce. There are sharp differences between barriers to adaptation and implementation in developing countries to that of developed countries. This paper examines the challenges faced by developing countries toward the development, progression and sustainability of electronic medical records. The paper also provides a review of implementation of varying types of electronic medical data management systems in developing countries.

Cyber-risk decision models

Security breaches adversely impact profit margins, market capitalization and brand image of an organization. Global organizations resort to the use of technological devices to reduce the frequency of a security breach. To minimize the impact of financial losses from security breaches, we advocate the use of cyber-insurance products. This paper proposes models to help firms decide on the utility of cyber-insurance products and to what extent they can use them. In this paper, we propose a Copula-aided Bayesian Belief Network (CBBN) for cyber-vulnerability assessment (C-VA), and expected loss computation. Taking these as an input and using the concepts of collective risk modeling theory, we also compute the premium that a cyber risk insurer can charge to indemnify cyber losses. Further, to assist cyber risk insurers and to effectively design products, we propose a utility based preferential pricing (UBPP) model. UBPP takes into account risk profiles and wealth of the prospective insured firm before proposing the premium. Display Omitted Proposed Cyber risk insurance products to minimize the impact of financial loss of security breach.Cyber risk insurance products complement security technology.Our proposed Copula aided Bayesian Belief networks model helps to asses cyber risk.Collective risk & Utility Theory used to computes premium for Cyber risk insurance products.Cyber risks mode for to decide to opt for cyber insurance or not for organizations.

Network convergence and the NAT/Firewall problems

Voice over IP technology is fueling the rapid growth on network convergence and we are seeing the successful deployment of converged networks within enterprises. However, most enterprises today sit behind firewalls and also use private IP addressing behind NATs (network address translators). These NATs and firewalls cause significant problems for multimedia over IP to work and function properly. There are presently two standards for VoIP signaling: H.323 (from ITU-T) and SIP (session initiation protocol from IETF). In this paper we present the details of the problems and issues associated with NATs/firewalls and then survey some ways to solve this problem for SIP. There is no single best solution yet. However, this paper discusses how such a simple and elegant solution can be built. This problem remains a significant obstacle for the successful adoption of convergence as security has become even more important to enterprises than adoption of emerging technologies.

Internet-based telemedicine: An empirical investigation of objective and subjective video quality

This study focuses on the Internet-based telemedicine with the goal of understanding the relationship between objective and subjective video quality measures and the decision making capability of medical professional using an ophthalmology video. Objective and subjective measures are calculated using PSNR and the perception of human viewers respectively. An emulated Internet testbed was created for experiments. Results indicate that jitter and delay have significant effect on the objective quality values. Subjective quality, on the other hand, not only depends on the same two factors, but also depends on which critical frames the provider is able to see and work with.