Browsing by Author "Phanouriou, Constantinos"

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  • Transforming Command-Line Driven Systems to Web Applications
    Phanouriou, Constantinos; Abrams, Marc (Department of Computer Science, Virginia Polytechnic Institute & State University, 1996-12-01)
    A method fo add a Web-based interface to a command-line driven system is presented. Without programming, Javamatic can generate a graphical user interface, then invokes commands in the legacy system transparently to the user. The user interface (UI) is automatically generated as a Java applet or stand-alone interface from a high-level description of the application, which is UI independent, using a set of UI mapping rules. The application is wrapped with an interface serverl thus multiple clients can use the legacy application through the Web.
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    UIML: A Device-Independent User Interface Markup Language
    Phanouriou, Constantinos (Virginia Tech, 2000-09-26)
    This dissertation proposes a comprehensive solution to the problem of building device-independent (or multi-channel) user interfaces promoting the separation of the interface from the application logic. It introduces an interface model (Meta-Interface Model, or MIM) for separating the user interface from the application logic and the presentation device. MIM divides the interface into three components, presentation, interface, and logic, that are connected with abstract vocabularies designed in terms of user chosen abstraction. The logic component provides a canonical way for the user interface to communicate with an application. The presentation component provides a canonical way for the user interface to render itself independently of the platform. The interface component describes the interaction between the user and the application using a set of abstract parts, events, and method calls that are device and application independent. MIM goes one step further than earlier models and subdivides the interface into four additional subcomponents: structure, style, content, and behavior. The structure describes the organization of the parts in the interface, the style describes the presentation specific properties of each part, the content describes the information that is presented to the user, and the behavior describes user interaction with the interface in a platform-independent manner. This dissertation also presents the second version of the User Interface Markup Language (UIML2), a declarative language that derives its syntax from XML and realizes the MIM model. It also gives the design rationale behind the language and discusses the implementation issues for mapping UIML2 to various devices (Java/JFC, PalmOS, WML, HTML, and VoiceXML). Finally, this dissertation evaluates UIML2 in terms of its goals, and among the major ones are to provide a canonical format for describing interfaces that map to multiple devices and to generate one description of a user interface connection to the application logic independent of target device.
  • WBCSim: A Prototype Problem Solving Environment for Wood-Based Composites Simulations
    Goel, A.; Phanouriou, Constantinos; Kamke, Frederick A.; Ribbens, Calvin J.; Shaffer, Clifford A.; Watson, Layne T. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1998-12-01)
    This paper describes a computing environment named WBCSim that is intended to increase the productivity of wood scientists conducting research on wood-based composite materials. WBCSim integrates Fortran 77-based simulation codes with a graphical front end, an optimization tool, and a visualization tool. WBCSim serves as a prototype for the design, construction, and evaluation of larger scale problem solving (computing) environments. Several different wood-based composite material simulations are supported. A detailed description of the prototype's software architecture and a typical scenario of use are presented. The system converts output from the simulations to the Virtual Reality Modeling Language (VRML) for visualizing simulation results.