Showing papers in "Information Systems Research in 2001"

Research Commentary: Desperately Seeking the IT in IT Research--A Call to Theorizing the IT Artifact

Abstract: The field of information systems is premised on the centrality of information technology in everyday socio-economic life. Yet, drawing on a review of the full set of articles published inInformation Systems Research ( ISR) over the past ten years, we argue that the field has not deeply engaged its core subject matter--the information technology (IT) artifact. Instead, we find that IS researchers tend to give central theoretical significance to the context (within which some usually unspecified technology is seen to operate), the discrete processing capabilities of the artifact (as separable from its context or use), or the dependent variable (that which is posited to be affected or changed as technology is developed, implemented, and used). The IT artifact itself tends to disappear from view, be taken for granted, or is presumed to be unproblematic once it is built and installed. After discussing the implications of our findings, we propose a research direction for the IS field that begins to take technology as seriously as its effects, context, and capabilities. In particular, we propose that IS researchers begin to theorize specifically about IT artifacts, and then incorporate these theories explicitly into their studies. We believe that such a research direction is critical if IS research is to make a significant contribution to the understanding of a world increasingly suffused with ubiquitous, interdependent, and emergent information technologies.

Combining IS Research Methods: Towards a Pluralist Methodology

Abstract: This paper puts forward arguments in favor of a pluralist approach to IS research. Rather than advocating a single paradigm, be it interpretive or positivist, or even a plurality of paradigms within the discipline as a whole, it suggests that research results will be richer and more reliable if different research methods, preferably from different (existing) paradigms, are routinely combined together. The paper is organized into three sections after the Introduction. In §2, the main arguments for the desirability of multimethod research are put forward, while §3 discusses its feasibility in theory and practice. §4 outlines two frameworks that are helpful in designing mixed-method research studies. These are illustrated with a critical evaluation of three examples of empirical research.

Research Report: Empirical Test of an EDI Adoption Model

Abstract: This paper is the first test of a parsimonious model that posits three factors as determinants of the adoption of electronic data interchange (EDI):readiness, perceived benefits, andexternal pressure. To construct the model, we identified and organized the factors that were found to be influential in prior EDI research. By testing all these factors together in one model, we are able to investigate their relative contributions to EDI adoption decisions. Senior purchasing managers, chosen for their experience with EDI and proximity to the EDI adoption decision, were surveyed and their responses analyzed using structural equation modeling. All three determinants were found to be significant predictors of intent to adopt EDI, with external pressure and readiness being considerably more important than perceived benefits. We show that the constructs in this model can be categorized into three levels:technological, organizational, andinterorganizational. We hypothesize that these categories of influence will also be determinants of the adoption of other emerging forms of interorganizational systems (IOS). 1

Alignment Between Business and IS Strategies: A Study of Prospectors, Analyzers, and Defenders

Abstract: Alignment between business strategy and IS strategy is widely believed to improve business performance. This paper examines the impact of alignment on perceived business performance using Miles and Snow's popular classification of Defender, Analyzer, and Prospector business strategies. A priori theoretical profiles for these business strategies are developed using Venkatraman's (1989a) measure of business strategy. Theoretical profiles for IS strategies are developed in terms of four types of systems--operational support systems, market information systems, strategic decision-support systems, and interorganizational systems. Empirical data from two multirespondent surveys of 164 and 62 companies, respectively, are analyzed. Results indicate that alignment affects perceived business performance but only insome organizations. Alignment seems to influence overall business success in Prospectors and Analyzers but not in Defenders. Implications for future research and practice are discussed.

Membership Size, Communication Activity, and Sustainability: A Resource-Based Model of Online Social Structures

Abstract: As telecommunication networks become more common, there is an increasing interest in the factors underlying the development of online social structures. It has been proposed that these structures are new forms of organizing which are not subject to the same constraints as traditional social structures. However, from anecdotal evidence and case studies it is difficult to evaluate whether online social structures are subject to the same problems as traditional social structures. Drawing from prior studies of traditional social structures and empirical analyses of longitudinal data from a sample of Internet-based groups, this exploratory work considers the role of size and communication activity in sustainable online social structures.A resource-based theory of sustainable social structures is presented. Members contribute time, energy, and other resources, enabling a social structure to provide benefits for individuals. These benefits, which include information, influence, and social support, are the basis for a social structure's ability to attract and retain members. This model focuses on the system of opposing forces that link membership size as a component of resource availability and communication activity as an aspect of benefit provision to the sustainability of an online social structure. Analyses of data from a random sample of e-mail-based Internet social structures (listservs) indicate that communication activity and size have both positive and negative effects on a structure's sustainability. These results suggest that while the use of networked communication technologies may alter the form of communication, balancing the opposing impacts of membership size and communication activity in order to maintain resource availability and provide benefits for current members remains a fundamental problem underlying the development of sustainable online social structures.

Research Report: Richness Versus Parsimony in Modeling Technology Adoption Decisions--Understanding Merchant Adoption of a Smart Card-Based Payment System

Abstract: The Technology Acceptance Model (TAM) has received considerable research attention in the IS field over the past decade, placing an emphasis on the roles played by perceived ease-of-use and perceived usefulness in influencing technology adoption decisions. Meanwhile, alternative sets of antecedents to adoption have received less attention. In this paper, sets of antecedent constructs drawn from both TAM and the Perceived Characteristics of Innovating (PCI) inventory are tested and subsequently compared with one another. The comparison is done in the context of a large-scale market trial of a smart card-based electronic payment system being evaluated by a group of retailers and merchants. The PCI set of antecedents explains substantially more variance than does TAM, while also providing managers with more detailed information regarding the antecedents driving technology innovation adoption.

Research Commentary: Technology-Mediated Learning--A Call for Greater Depth and Breadth of Research

Abstract: Universities and corporate training facilities have been investing in information technologies to improve education and training at an increasing rate during the past decade. Many new companies are emerging to provide tools and services to enable the effective design of IT-based learning solutions. Although research on technology-mediated learning has increased in recent years, it still lags behind developments in practice. This essay suggests potential research avenues in the area of technology-mediated learning. It seeks to motivate greater depth of research into the question of how technology enhances learning. This question requires an explicit consideration of relationships among technology capabilities, instructional strategy, psychological processes, and contextual factors involved in learning. The essay also recommends attention to a greater breadth of research questions, including issues of how technology-mediated learning affects program design and what structures and processes universities can employ to facilitate innovation.

Research Report: A Reexamination of IT Investment and the Market Value of the Firm--An Event Study Methodology

Abstract: Evaluating the effectiveness of Information Technology (IT) investments has always been an elusive but important goal of IS researchers. This study builds on a prior study that examined changes in the market value of the firm as reflected by the stock price in response to IT investment announcements. Data on stock prices were analyzed for 238 publicly traded companies. In addition to the stock price analysis, reaction of trading volume to the announcements was also examined to identify whether IT investment announcements affect investors' beliefs about IT value. Potentially confounding factors such as industry, size, and time lag effects were also analyzed. Size and time lag effects were found for all IT investment announcements. Reactions of price and volume were negatively related to firm size and became more positive over time. The positive excess return for smaller firms shows that smaller firms can leverage the lower price/performance ratio of new IT and reap greater rewards from IT investments than larger firms. Also, the result of time lag effect demonstrates that the stock market has recently begun to identify both tangible and intangible benefits of IT investments. For recent IT investment announcements, industry classification and firm size also affected the reactions of stock price to the announcements. This study provides optimism on the stock market reaction to IT investment announcements as well as further insight into the study of IT impacts on organizational performance.

Research Commentary: Introducing a Third Dimension in Information Systems Design--The Case for Incentive Alignment

Abstract: Prior research has generated considerable knowledge on information systems design from software engineering and user-acceptance perspectives. As organizational processes are increasingly embedded within information systems, one of the key considerations of many business processes--organizational incentives--should become an important dimension of any information systems design and evaluation, which we categorize as the third dimension: incentive alignment. Incentive issues have become important in many IS areas, including distributed decision support systems (DSS), knowledge management, and e-business supply chain coordination. In this paper we outline why incentives are important in each of these areas and specify requirements for designing incentive-aligned information systems. We identify and define important unresolved problems along the incentive-alignment dimension of information systems and present a research agenda to address them.

Research Commentary: Transformational Issues in Researching IS and Net-Enabled Organizations

Abstract: The conduct of net-enabled business, known variously as electronic commerce (EC) or e-Business, has changed the landscape and opportunities for IS research by shifting the focus from internal to customer/partnering systems. The article examines the two primary dyadic net-enabled relationships in the marketplace: B2C and B2B. It also considers issues that extend beyond these two relationships. B2C practice and research are analyzed from: (1) consumer, (2) service, and (3) risk perspectives. Three central issues of B2B or supply chain practice and research are next considered: (1) beyond simple efficiencies, (2) innovations in B2B technology, and (3) information visibility. Finally, four overarching research issues are examined: (1) strategy, (2) organizational design, (3) metrics, and (4) managing IS.Not all research on the net-enabled organization (NEO) is IS research, and it is critical that IS journals maintain their distinctive focus. Within the bounds of the net-enabled revolution, though, the IS field has an opportunity to shape the phenomenon with timely, theory-based work that will disseminate beyond the IS academic and practitioner communities.

The Impact of E-Commerce Announcements on the Market Value of Firms

Abstract: Firms are undertaking growing numbers of e-commerce initiatives and increasingly making significant investments required to participate in the growing online market. However, empirical support for the benefits to firms from e-commerce is weaker than glowing accounts in the popular press, based on anecdotal evidence, would lead us to believe. In this paper, we explore the following questions: What are the returns to shareholders in firms engaging in e-commerce? How do the returns to conventional,brick and mortar firms from e-commerce initiatives compare with returns to the new breed ofnet firms? How do returns frombusiness-to-business e-commerce compare with returns frombusiness-to-consumer e-commerce? How do the returns to e-commerce initiatives involvingdigital goods compare to initiatives involvingtangible goods? We examine these issues using event study methodology and assess thecumulative abnormal returns to shareholders (CARs) for 251 e-commerce initiatives announced by firms between October and December 1998. The results suggest that e-commerce initiatives do indeed lead to significant positiveCARs for firms' shareholders. While theCARs for conventional firms are not significantly different from those for net firms, theCARs forbusiness-to-consumer (B2C) announcements are higher than those forbusiness-to-business (B2B) announcements. Also, theCARs with respect to e-commerce initiatives involving tangible goods are higher than for those involving digital goods. Our data were collected in the last quarter of 1998 during a unique bull market period and the magnitudes ofCARs (between 4.9 and 23.4% for different subsamples) in response to e-commerce announcements are larger than those reported for a variety of other firm actions in prior event studies. This paper presents the first empirical test of thedot com effect, validating popular anticipations of significant future benefits to firms entering into e-commerce arrangements.

Should Optional Properties Be Used in Conceptual Modelling? A Theory and Three Empirical Tests

Abstract: An important feature of some conceptual modelling grammars is the features they provide to allow database designers to show real-world thingsmay ormay not possess a particular attribute or relationship. In the entity-relationship model, for example, the fact that a thing may not possess an attribute can be represented by using a special symbol to indicate that the attribute is optional. Similarly, the fact that a thing may or may not be involved in a relationship can be represented by showing the minimum cardinality of the relationship as zero. Whether these practices should be followed, however, is a contentious issue. An alternative approach is to eliminate optional attributes and relationships from conceptual schema diagrams by using subtypes that have only mandatory attributes and relationships.In this paper, we first present a theory that led us to predict that optional attributes and relationships should be used in conceptual schema diagrams only when users of the diagrams require a surface-level understanding of the domain being represented by the diagrams. When users require a deep-level understanding, however, optional attributes and relationships should not be used because they undermine users' abilities to grasp important domain semantics. We describe three experiments which we then undertook to test our predictions. The results of the experiments support our predictions.

Research Report: Modifying Paradigms--Individual Differences, Creativity Techniques, and Exposure to Ideas in Group Idea Generation

Abstract: In today's networked economy, ideas that challenge existing business models and paradigms are becoming more important. This study investigated how individual differences, groupware-based creativity techniques, and ideas from others influenced the type of ideas that individuals generated. While individual differences were important (in that some individuals were inherently more likely to generate ideas that followed the existing problem paradigm while others were more likely to generate paradigm-modifying ideas that attempted to change the problem paradigm), the exposure to paradigm-modifying ideas from others and the use of intuitive groupware-based creativity techniques rather than analytical groupware-based creativity techniques were found to increase the number of paradigm-modifying ideas produced.

The Effects of Time Pressure on Quality in Software Development: An Agency Model

Abstract: An agency framework is used to model the behavior of software developers as they weigh concerns about product quality against concerns about missing individual task deadlines. Developers who care about quality but fear the career impact of missed deadlines may take "shortcuts." Managers sometimes attempt to reduce this risk via their deadline-setting policies; a common method involves adding slack to best estimates when setting deadlines to partially alleviate the time pressures believed to encourage shortcut-taking. This paper derives a formal relationship between deadline-setting policies and software product quality. It shows that: (1) adding slack does not always preserve quality, thus, systematically adding slack is an incomplete policy for minimizing costs; (2) costs can be minimized by adopting policies that permit estimates of completion dates and deadlines that are different and; (3) contrary to casual intuition, shortcut-taking can be eliminated by setting deadlines aggressively, thereby maintaining or even increasing the time pressures under which developers work.

Technology Requirements and Work Group Communication for Telecommuters

Abstract: As organizations implement more and more distributed work arrangements such as telecommuting, there is a need to understand the determinants of success of this new work setting. This research investigated three variables believed to impact outcomes in telecommuting: the availability of information system technology, the availability of communication technologies, and the communication patterns of telecommuters within their work groups. Two perspectives are used in this study. The direct effects of these three variables on perceived productivity, performance, and satisfaction were tested. A second perspective, based on the concept of fit and contingency theory, posits that successful telecommuting outcomes, measured by perceived productivity, performance, and satisfaction, are predicted by interactions between these independent variables. The study was conducted by surveying multiple respondents from different organizations who were members of work groups in which some or all employees were telecommuters. The results indicate that technology variables positively impact productivity, performance, and satisfaction of telecommuters, while the interaction between the technology variables is significant in predicting perceived productivity. Work group communication, as measured by the centrality of individuals, negatively affects perceived productivity and performance. The paper presents a discussion of the theoretical significance of these findings, and offers recommendations for future research.

Cognitive Support for Real-Time Dynamic Decision Making

Abstract: This research examines how decision makers manage their attentional resources when making a series of interdependent decisions in a real-time environment. Decision strategies for real-time dynamic tasks consist of two main overlapping cognitive activities: monitoring and control. Monitoring refers to decision makers' tracking of key system variables as they work toward arriving at a decision. Control refers to the decision maker's generation, evaluation, and selection of alternative actions. In real-time tasks, these two activities compete for the same attentional resources. The questions that motivate the two studies presented here are: (1) can decision making be improved by increasing individuals' attentional resources, thereby enhancing their ability to monitor the system, and (2) can decision making be improved by providing individuals with feedback and/or feedforward control support? Our findings show that some kinds of cognitive support degrade performance, rather than enhance it. These results indicate that providing support for real-time dynamic decision making may be very difficult, and that designing effective decision aids requires a detailed understanding of the underlying cognitive processes.

Beyond EDI: Impact of Continuous Replenishment Program (CRP) Between a Manufacturer and Its Retailers

Abstract: Electronic data interchange (EDI), used traditionally to exchange business documents, has recently been extended to facilitate interorganizational collaborative processes such as the continuous replenishment program (CRP). The key characteristics of CRP are the sharing of real-time inventory data by retailers with manufacturers and continuous replenishment of retailer inventory by manufacturers. Prior research on EDI has focused on the transaction efficiency of EDI. We analyze the impact of information sharing and continuous replenishment in the CRP context and study the factors that affect the value of CRP. The study quantifies the value derived from CRP and the optimal number of retailers a manufacturer should partner with.

An Evaluation of Self-Organizing Map Networks as a Robust Alternative to Factor Analysis in Data Mining Applications

Abstract: Kohonen's self-organizing map (SOM) network is one of the most important network architectures developed during the 1980s. The main function of SOM networks is to map the input data from ann-dimensional space to a lower dimensional (usually one- or two-dimensional) plot while maintaining the original topological relations. Therefore, it can be viewed as an analog of factor analysis. In this research, we evaluate the feasibility of using SOM networks as a robust alternative to factor analysis and clustering for data mining applications. Specifically, we compare SOM network solutions to factor analytic and K-Means clustering solutions on simulated data sets with known underlying factor and cluster structures.The comparisons indicate that the SOM networks provide solutions superior to unrotated factor solutions in general and provide more accurate recovery of underlying cluster structures when the input data are skewed. Our findings suggest that SOM networks can provide robust alternatives to traditional factor analysis and clustering techniques in data mining applications.

A Conceptual Model and Algebra for On-Line Analytical Processing in Decision Support Databases

Abstract: Data warehousing and On-Line Analytical Processing (OLAP) are two of the most significant new technologies in the business data processing arena. A data warehouse, or decision support database, can be defined as a "very large" repository of historical data pertaining to an organization. OLAP refers to the technique of performing complex analysis over the information stored in a data warehouse. The complexity of queries required to support OLAP applications makes it difficult to implement using standard relational database technology. Moreover, currently there is no standard conceptual model for OLAP. There clearly is a need for such a model and an algebra as evidenced by the numerous SQL extensions offered by many vendors of OLAP products. In this paper we address this issue by proposing a model of a data cube and an algebra to support OLAP operations on this cube. The model we present is simple and intuitive, and the algebra provides a means to concisely express complex OLAP queries.

Business Planning for Network Services: A Systems Thinking Approach

Abstract: As demand for online network services continues to grow, service providers are looking to meet this need and avail themselves of business opportunities. However, despite strong growth in demand, providers continue to have difficulty achieving profitability, customer churn remains high, and network performance continues to draw complaints. We suggest that strategic business planning for network services would benefit from a systems thinking approach that analyzes thefeedback effects present in the underlying business process. These feedback loops can be complex and have significant impact on business performance. For instance, while the size of a provider's customer base depends on price and network performance, network performance is itself dependent on the size of the customer base. In this paper, we develop a planning model that represents thesefeedback effects using the finite difference equations methodology of systems dynamics. The model is validated by showing its fit with essential characteristics of the underlying problem domain, and by showing its ability to replicate observed reference mode behaviors. Simulations are then carried out under a variety of scenarios to examine issues important to service providers. Among other findings, the simulations suggest that (a) under flat-rate pricing, lowering price to increase customer base can hurt profitabilityas well as network performance; (b) under usage-based pricing, lowering price need not necessarily lead to a larger customer base; and © in addition to price, the customers' threshold of tolerance for performance degradation plays a significant role in balancing market share with profitability. We briefly present a prototype decision support system based on the systems thinking approach, and suggest ways in which it could be used to help business planning for network services.

A Foundation for Flexible Automated Electronic Communication

Abstract: In this paper the author describes a formal language for communication based on linguistics--more specifically, a theory of natural language communication and models of natural language conversations. The language has a small number of general message types that are formally defined by their intended effects on the recipient. For each message type he defines a standard automated method of responding that depends only on the message type and is independent of the message's content. For more complex conversations he provides methods for responding that do depend on the content. In this system, a message's sender--automated or human--constructs and sends a message knowing that he cannot know, but can only predict, how it will be interpreted. The agent receiving the message interprets it and then uses it as a basis for inferring how he should respond. The message interpretation mechanism for this language is reusable, modular, and shared by all applications. The benefit of this communication system is that it makes the communication infrastructure more flexible, easier to modify, easier to expand, and more capable.

Collaborative Decision Making: A Connectionist Paradigm for Dialectical Support

Abstract: The facilitation and analytical support of argumentation-based collaborative decision making is the focus of this research We model collaborative decision making as an argumentation process We develop a connectionist modeling framework, a network representation formalism for argument structures, connectionist network mechanisms, and their models of computations to extract the behavior of argument structures We use two examples from the case study literature to illustrate the concepts Several interesting properties of the connectionist network models are observed from our computational results We find that although the length of the computation is affected by parametric values, the final activation levels of the units are largely unaffected We observe that the initial activation levels of the defeasible units seem to have no effect on their final activation levels The proposed modeling approach generates valuable insights into the characteristics of specific argumentative discussions While the intention of this work is not to introduce the connectionist paradigm as a means to bring arguments to a closure (resolution), we show that certain resolution mechanisms can be easily implemented under the connectionist framework

On Heterogeneous Database Retrieval: A Cognitively Guided Approach

Abstract: Retrieving information from heterogeneous database systems involves a complex process and remains a challenging research area. We propose a cognitively guided approach for developing an information-retrieval agent that takes the user's information request, identifies relevant information sources, and generates a multidatabase access plan. Our work is distinctive in that the agent design is based on an empirical study of how human experts retrieve information from multiple, heterogeneous database systems. To improve on empirically observed information-retrieval capabilities, the design incorporates mathematical models and algorithmic components. These components optimize the set of information sources that need to be considered to respond to a user query and are used to develop efficient multidatabase-access plans. This agent design, which integrates cognitive and mathematical models, has been implemented using Soar, a knowledge-based architecture.

The Effects of Time Pressure on Quality in Software Development

Abstract: An agency framework is used to model the behavior of software developers as they weigh concerns about product quality against concerns about missing individual task deadlines. Developers who care a...

On Heterogeneous Database Retrieval

Abstract: Retrieving information from heterogeneous database systems involves a complex process and remains a challenging research area. We propose a cognitively guided approach for developing an information...

Implemetation of reliable robot control system for nuclear power plant manipulation

Abstract: We implement a reliable robot control system for performing maintenance/repairing in nuclear power plant. Systems entered in extreme environments should have high reliability, since their failures cause much longer maintenance time. Our system is designed to have a threelevel hierarchical structure – slave/master/supervisory controllers – by considering the degree of radiation hazard. The slave controller, which is placed in the most hazardous region, has duplex processors designed with cold-standby method and dual-CAN (Control Area Network) communication structure to ensure high reliability. It performs sensing and actuation. The master controller with real-time OS of QNX, which is placed in semi-hazardous zone, performs control function. The master and slave controllers construct a feedback control loop with dual-CAN communication channel between them. A 10 Mbps Ethernet transfers robot state information from the master controller to the supervisory controller, which is placed in safety zone. Also it commands from the supervisory controller to the master controller. The overall control system operates the given control job with 1ms control period and 4ms monitoring period, and 3 msec fault recovery time.