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Subrata Bhattacharjee and Christopher Paolini Mechanical Engineering Department

A Cyber-Based Collaborative Framework for Thermodynamic Education and Research. Subrata Bhattacharjee and Christopher Paolini Mechanical Engineering Department San Diego State University. Outline. Demonstration of TEST (thermofluids.net) as an educational tool.

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Subrata Bhattacharjee and Christopher Paolini Mechanical Engineering Department

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  1. A Cyber-Based Collaborative Framework for Thermodynamic Education and Research Subrata Bhattacharjee and Christopher Paolini Mechanical Engineering Department San Diego State University NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  2. Outline • Demonstration of TEST (thermofluids.net) as an educational tool. • How such a tool used by thousands of students, educators, and professionals can benefit from the cyber infrastructure. • Web service and how our work can benefit the educational and research community • Ongoing and future work NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  3. TEST – The Expert System for Thermodynamics • A web based educational tool for students, educators, and professionals. • It is a cross-platform visual environment for solving thermodynamic problems and pursuing what-if scenarios. • It has a large user base – more than 1000 registered educators, and 10,000 students and professionals. • It is freely accessible to all academic institution. NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  4. TEST Home Page - thermofluids.net NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  5. Multimedia Problems NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  6. A Large Selection of Solvers (Daemons) NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  7. Simplification NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  8. The Open Steady Daemon NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  9. A Combustion Problem NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  10. Open Steady Combustion Daemon NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  11. Equilibrium Daemon – Set Up Species NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  12. Equilibrium Daemon – Evaluate States NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  13. Equilibrium Daemon – Products Composition NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  14. A Framework for Community Computing • Convert stand-alone application into client/server and ultimately to peer-to-peer model – improve speed. • Users can contribute new data and make it immediately available to others. • Web service for speed – distributed parallel computing in a grid. • Web service for versatile use of our code. Published through WSDL and located by UDDI, your computer may find our publicly available methods and data on equilibrium. Like the peer-to-peer song search. NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  15. Standalone Software Architecture • The “old” way: provide self-contained software applications to end users. • Inflexible: new and experimental thermo-chemical data can not be added by one remote user and used by another remote user in real time. NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  16. Service Oriented Architecture (SOA) • Service Oriented Architectures extend the benefits of object oriented programming to the network - reusability, flexibility, interoperability, scalability. NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  17. Client/Web Service Communication NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  18. UDDI: Web Service Discovery NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  19. Web Services – Technologies and Tools • An abundance of tools and technologies exist for the development of collaborative, networked engineering applications using Web Services Web Server, J2SE, Apache Axis, etc. Web Service Layer Java Equilibrium Codes, IDE, etc. NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  20. Conclusions • TEST is freely accessible from www.thermofluids.net • Equilibrium daemon is one of the many thermodynamic calculators (applets). • Ability for user to upload data and make it available to others – work in progress. • Extend the codes to include multiple phases – future plan. • Migrate to web service architecture for speed and community computing – future plan. NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

  21. Web Service Related Abbreviations • XML: standard language for describing data that is exchanged over a network. • SOAP: a protocol based on XML for transmitting data in a distributed computing environment. • JAX-RPC: a freely available Java API that allows a Java client to call web service methods in a distributed computing environment using SOAP based XML messages. Hides the complexity of SOAP from the developer. Automatically generates the proper SOAP message when invoking a remote method from a web service. Provides a mapping tool named wscompile that automatically generates the WSDL file from a JAX-RPC service definition. • SAAJ: a freely available Java API for generating and sending SOAP messages. Used by JAX-RPC to create and send SOAP messages synchronously (send and wait for reply) or asynchronously (send and continue). • JAXP: a freely available Java API for processing XML documents. • JAXR: a freely available Java API for accessing UDDI registries. Used by clients to discover web services by querying JAXR providers. JAXR providers then query registry providers who respond back to the JAXR provider. The JAXR provider transforms the registry provider response into a JAXR compliant response so it can be interpreted by the JAXR client. • JAXB: a freely available Java API that provides a mapping from an XML document to a set of Java classes and interfaces based on the XML document's schema. A benefit for developers since JAXB enables an application to operate with Java content and not with XML data. • WS-Security: provides security enhancements such as authentication and integrity in SOAP messages sent between a client and web service. NSF Workshop on Cyber Infrastructure in Combustion Science April 19-20, 2006

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