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Expert Syst. Appl. 01/2011; 38:4326-4338.
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Expert Syst. Appl. 01/2009; 36:11398.
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Information & Management. 01/2008; 45:270-280.
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ABSTRACT: Security and integrity of business-to-consumer e-commerce web-based systems (ECWS) is becoming a concern among ECWS adopters. The controls for ECWS are classified into controls for system continuity, access controls, communication controls, and informal controls. The control design for ECWS is not well structured and demands understanding of the complex causal relationships among environmental factors (infrastructure, organizational requirements for security), controls, implementation, and performance. In order to aid the design of ECWS controls, the application of a fuzzy cognitive map, ECFCM (EC-control design using a fuzzy cognitive map), was developed. Structural equation modeling was used to identify relevant relationships among the components and indicate their direction and strength. A standardized causal coefficient from structural equation modeling was then used to create a fuzzy cognitive map, through which the state or movement of one control component was shown to have an influence on the state or movement of others. Thus ECFCM provides a practical insight to IS auditors by addressing the applicability of soft approaches in capturing and illustrating the use of FCM in the design of ECWS controls.
Expert Systems with Applications.
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ABSTRACT: The evolution of electronic data interchange (EDI) provides a more convenient and flexible means of interorganizational communication as well as lots of organizational benefits. EDI is changing rapidly from traditional EDI to Internet-based EDI due to rapid development of Internet-based information technologies. Security and integrity of the system, however, is becoming a concern among EDI adopters. This paper examines the effects of formal and informal controls, each of which are categorized as internal and external controls, on EDI performance. Hypotheses indicate that controls directly or indirectly affect performance through their effects on the success of implementation. A structural equation modeling approach (LISREL) is used to analyze data from Korean companies.Internal formal and external informal controls have an indirect effect on performance through implementation success. External formal controls turn out to have a direct effect on performance. The results empirically support that causal relations exist between EDI controls, implementation success, and performance.
Expert Systems with Applications.
