Although color has appeal for developers and consumers alike, color reproduction poses a major problem in many computer based applications including multimedia and desktop publishing. The problem arises because of the device-independence of color, and the way each device processes color. Matching the appearance of monitor and print images, and achieving satisfactory results is complex. Not only are there fundamental differences between computer screen (additive) and printers (subtractive), but subtractive color is in general more prone to errors due to dye inadequacies. In order 110 Expert Systems, May 1998, Vol. 15, No. 2 to control the error in porting color, different techniques have been applied. In this paper, the utilization of artificial neural networks as well as abductive modeling approaches to color error reduction are introduced from an RGB (Red Green Blue) color model perspective. Analysis of the results and on-going research issues are discussed.
Software reuse and systems interoperability have been the primary goals of many IT organizations as a means to curb software cost. While there were spots of success over the years, the state of the industry with respect to reuse and interoperability is still lagging. Two main reasons are: lack of standards and security barriers imposed on many software systems. Web service, a self-describing service that can easily be consumed over the Web, is the latest trend in the industry to address the problems identified above. Based on XML and HTTP, Web services make it possible for involved parties across networks to communicate and produce/consume a service in a uniform manner. This paper describes the incorporation of Web services security (WS-Security) into a project that integrates Web services into a Web-based college admission portal system. With the incorporation of WS-Security, the project showcases how the aforementioned problems together with security issues can be addressed using some of the burgeoning Web services technologies.
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