Proceedings of the International Symposium on Distributed Objects and Applications最新文献_第3页

Dynamic component gluing across different componentware systems 跨不同组件系统的动态组件粘合

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.794064

Renato Cerqueira, Carlos Cassino, R. Ierusalimschy

引用次数: 47

An adaptable workflow system architecture on the Internet for electronic commerce applications 一种适用于电子商务应用的Internet工作流系统体系结构

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.794038

Ibrahim Cingil, A. Dogac, Nesime Tatbul, S. Arpinar

{"title":"An adaptable workflow system architecture on the Internet for electronic commerce applications","authors":"Ibrahim Cingil, A. Dogac, Nesime Tatbul, S. Arpinar","doi":"10.1109/DOA.1999.794038","DOIUrl":"https://doi.org/10.1109/DOA.1999.794038","url":null,"abstract":"An electronic commerce (EC) process is a business process and defining it as a workflow provides all the advantages that come with this technology. Yet electronic commerce processes place certain demands on the workflow technology like the distribution of the load of the workflow engine to multiple servers, dynamic modification of workflows for adaptability, openness and availability. We propose a workflow system architecture to address these issues. The componentwise architecture of the system makes it possible to incorporate the functionality and thus the complexity only when it is actually needed. The infrastructure of the system is based on CORBA 2.0 where methods are invoked through XML. The clients of the system are coded as network transportable applets written in Java so that the end user can activate workflow components through the workflow domain manager over the network. The system provides high availability by replicating the component server repository and the workflow domain manager. We also discuss how this architecture can be used in building an electronic marketplace.","PeriodicalId":360176,"journal":{"name":"Proceedings of the International Symposium on Distributed Objects and Applications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133592638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Parallel data processing in a distributed object-oriented model 分布式面向对象模型中的并行数据处理

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.794059

John R. Monde, Maria Seale

引用次数: 2

DeepView: a channel for distributed microscopy DeepView:分布式显微镜的通道

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.794017

B. Parvin, John R. Taylor, G. Cong

{"title":"DeepView: a channel for distributed microscopy","authors":"B. Parvin, John R. Taylor, G. Cong","doi":"10.1109/DOA.1999.794017","DOIUrl":"https://doi.org/10.1109/DOA.1999.794017","url":null,"abstract":"The paper outlines the requirements, architecture, and design of a \"Microscopy Channel\" over the wide area network. A microscopy channel has a listing of available online microscopes, where users can seamlessly participate in an experiment, acquire expert opinions, collect and process data, and store it in their electronic notebook. The proposed channel is a collaborative problem solving environment (PSE) that leverages existing computational toolkits to support simulation and inverse problem solving. Our testbed includes several unique electron and optical microscopes with applications ranging from material science to biology. We have studied current commercial services from OMG and concluded that three basic services are needed to meet the scalability and functionality constraints. These include: Instrument Services (IS), Exchange Services (ES), and Computational Services (CS). These services sit on top of CORBA and its enabling services (naming, trading, security, and notification). IS provide a layer of abstraction for controlling any type of microscope. ES provide a common set of utilities for information management and transaction. CS provide the analytical capabilities needed for online microscopy. The enabling services provide a mechanism for resource discovery, safety and security, and decoupled communication.","PeriodicalId":360176,"journal":{"name":"Proceedings of the International Symposium on Distributed Objects and Applications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128232412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Extending CORBA with specialised protocols for QoS provisioning 用专门的协议扩展CORBA以提供QoS

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.794054

A. V. Halteren, A. Noutash, L. Nieuwenhuis, M. Wegdam

{"title":"Extending CORBA with specialised protocols for QoS provisioning","authors":"A. V. Halteren, A. Noutash, L. Nieuwenhuis, M. Wegdam","doi":"10.1109/DOA.1999.794054","DOIUrl":"https://doi.org/10.1109/DOA.1999.794054","url":null,"abstract":"The CORBA layer in a distributed system hides the heterogeneity of the underlying computer network. The interactions of objects located at different computing systems are described in terms of IDL specifications and the ORB takes care of the actual transfer of messages along the wire. In fact, an object interaction is translated into the transfer of GIOP messages over TCP/IP networks (IIOP). The advantages in terms of interoperability and portability are obvious. Currently, OMG is in the process of standardising the Open Communication Interface (OCI). Through OCI, a protocol module can be plugged into any ORB and hence, the distributed application including the ORB can be put on top of any network without changing the application's code, thus implementing network transparency. Obviously, the QoS of distributed applications depends on the QoS of the underlying network protocols e.g., best effort versus guaranteed bandwidth. Through OCI we are able to use the network protocol that is needed to satisfy the QoS requirements of a specific distributed application. We propose to extend CORBA with specialised protocols for QoS provisioning using OCI. We have prototyped protocol plug-ins, including a plug-in that exploits IP Multicast. The IP Multicast plug-in can be used in situations where one client communicates with a group of replicated servers. We have used this mechanism to implement replication transparency in CORBA and have shown that the OCI interface can be used for QoS provisioning in CORBA. Based on our hands-on experience, we have also identified some shortcomings in the proposed OCI specification.","PeriodicalId":360176,"journal":{"name":"Proceedings of the International Symposium on Distributed Objects and Applications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122223858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Formal support for the engineering of CORBA-based distributed object systems 对基于corba的分布式对象系统工程的正式支持

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.794042

R. Bastide, Ousmane Sy, Philippe A. Palanque

引用次数: 6

Building mediators from components 从组件构建中介

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.794061

John Todd, Christian Och, R. King, Richard Osborne, W. McIver, Nathan Getrich, Brianna Temple

引用次数: 5

Storage access coordination using CORBA 使用CORBA的存储访问协调

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.794015

A. Sim, H. Nordberg, L. Bernardo, A. Shoshani, D. Rotem

{"title":"Storage access coordination using CORBA","authors":"A. Sim, H. Nordberg, L. Bernardo, A. Shoshani, D. Rotem","doi":"10.1109/DOA.1999.794015","DOIUrl":"https://doi.org/10.1109/DOA.1999.794015","url":null,"abstract":"We describe our experience with using several CORBA products to interconnect the software modules of a fairly complex storage coordination system. In the application area of High Energy and Nuclear Physics (HENP) the volume of data reaches hundreds of terabytes per year, and therefore it is impractical to store them on disk systems. Rather they are stored on robotic tape systems that are managed by some mass storage system (MSS). The role of the Storage Access Coordination System (STACS) that we developed is to manage the caching of files from the MSS to a large disk cache that is shared by multiple HENP analysis programs. The system design involved multiple components developed by different people at different sites, and the modules could potentially be distributed as well. We describe the architecture and implementation of the system STACS, emphasizing the inter-module communication requirements. We describe the use of CORBA interfaces between system components, and our experience with using multi-threaded CORBA and moving large objects through the CORBA interfaces. STACS development was recently completed and is being incorporated in an operational environment scheduled to go online in the summer of 1999.","PeriodicalId":360176,"journal":{"name":"Proceedings of the International Symposium on Distributed Objects and Applications","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132349558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Distributing mapping objects with the Geospatial Information Database 使用地理空间信息数据库分发映射对象

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.793989

Miyi Chung, Ruth Wilson, K. Shaw, Maria Seale

引用次数: 2

A framework for policy bindings 用于策略绑定的框架

Proceedings of the International Symposium on Distributed Objects and Applications Pub Date : 1999-09-05 DOI: 10.1109/DOA.1999.793971

Øyvind Hanssen, F. Eliassen

引用次数: 19