Extensible Network Services for the Access Grid

该提案计划开发中间件，允许使用不同协作基础设施的个人或团体参与基于Access Grid的会话，而不需要人工干预。这将通过开发Web服务模型来实现，该模型将允许组件在可用时进行更新，而不需要重新编写整个框架。该提案将开发三个新的模块：1.网络服务引擎，作为用户和解析引擎之间的主要联系点2.将用户能力与可用的服务相匹配的解析引擎；它还将起到服务注册表的作用；以及3.网络服务用户界面，它提供用户对网络服务框架的看法。这项工作将建立在Access Grid开发者的广泛经验基础上。这些模块将使用户能够最大限度地使用Access Grid。网络服务用户界面将用户对资源的请求输送到网络服务注册表，而在需要执行手动解析任务的情况下，解析引擎使用网络服务界面与用户交互。这项工作将使协作社区受益于Access Grid之外的其他领域。该提案还包括对接入网格空间的技术指导、培训和评估，以及关于芝加哥大学和NSF接入节点的变化和改进的建议。

The proposal plans to develop middleware that will allow individuals or groups using differing collaboration infrastructures to participate in an Access Grid-based session without the need for human intervention. This will be done by developing a web services model that will allow components to be updated as they become available without requiring the whole framework to be reworded. The proposal will develop three new modules:1. Network Services Engine which acts as the principal point of contact between the users and resolution engine2. Resolution Engine which matches user capabilities to the services available; it will also function as a Service Registry and,3. Network Services User Interface which provides the user's view into the network services framework.The work will build on the extensive expereince base of the Access Grid developers.These modules will enable users to maximize their use of the Access Grid. The Network Services User Interface funnels user requests for resources to the Network Services Registry, and the Resolution Engine uses the Network Services Interface to interact with the user in the event that manual resolution tasks need to be performed. The work will be beneficial to the collaboration community beyond that of the Access Grid. The proposal also includes technical guidance, training and evaluation of the Access Grid space and advice on changes and improvements at University of Chicago and the NSF Access nodes.