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In this paper we present a planning tool, Brahma, that specifically addresses the above mentioned problem, as Brahma is capable of providing solutions where the management tasks are split between the client and SSP at a finer granularity. Our tool is unique because a) in addition to hardware/software resources, it also takes human skill set as an input b) it takes planning time window as input because plans that are optimal for a given time period (e.g. a month) might not necessarily be the most optimum for a different time period (e.g. a year) c) it can be used separately by both the client and the SSP to do their respective planning d) it allows the client and the SSP to propose alternative solutions if certain input service level agreements can be relaxed.

In this paper, we propose an approach for QoS-aware optimization of composite-service fulfillment policy. Without loss of generality, we assume that the optimization goal is to minimize the number of machines subject to response time and throughput requirements. After presenting our approach to the optimization problem using the assumption, we show that an NP-hard throughput optimization problem must be attacked. We then illustrate how we attack the problem via an efficient heuristic algorithm. The algorithm decomposes the end-to-end response time requirement for each type of composite service into atomic-service level response time assurance, and co-locate atomic services with similar response time assurance on machines with similar utilization characteristics. The algorithm exemplifies an integrated approach to optimizing service deployment and service composition. We demonstrate that the algorithm achieves a substantially higher throughput than a common baseline algorithm.

This paper models cross-organizational service agree- ments as resulting in the formation of organizations. This paper emphasizes the importance of proactive policy-based governance in organizations (modeled as multiagent sys- tems) and provides a novel architecture supporting policy monitoring, governance, and enactment.

This paper provides an initial formalization and dis- cusses the compliance and completeness of behaviors pro- duced from specified policies. To demonstrate the practical utility of this approach, it is implemented using an existing policy engine and messaging middleware.

We propose a novel generic approach for creating integrated systems by composing GAPs with each other and web services efficiently and non-invasively. This approach combines a nonstandard use of accessibility technologies for accessing and controlling GAPs in a uniform way with a visualization mechanism that enables nonprogrammers to compose integrated systems by performing point-and-click, drag-and-drop operations on GAPs and web services. We built a tool based on our approach, and using this tool we created an integrated application that controls two closed and monolithic commercial GAPs and third-party web services. Our evaluation suggests that our approach is effective, and it can be used to create nontrivial integrated systems by composing GAPs with each other and web services.

In this paper, we explain the approach encapsulated in the BPT Wizard.

Innovations, in particular, service innovations are difficult to articulate their structures and mechanisms, due to intangibility coming from services characteristics, and a lack of languages to describe them. In this paper, we investigate 1. How can we capture the characteristics of innovations as patterns? 2. What are the categories of patterns for innovations? We introduce innovation pattern categories and patterns from enterprise viewpoints, and apply them to innovation cases. We identify future study areas, such as innovation ecosystem modeling, and innovation lifecycle studies using innovation patterns.

In this paper, we present a third approach - semiautomated composition - based on three mixed initiative features which we have derived from an industry case study with SAP. These features, filter inappropriate services, check validity, and suggest partial plans, are definded on the basis of a common formal model. Related approaches, in contrast, are limited to supporting individual mixed initiative features. To show the applicability of our approach, we have developed a prototypical implementation. Our results show that our mixed initiative approach significantly eases the modeling of service compositions.

This paper validates a formal, protocol-based approach by specifying foreign exchange processes as standardized by the TWIST consortium. The proposed approach formal- izes a small, core set of foreign exchange interaction pro- tocols on which the desired processes can be based. The core protocols can be composed to yield a large variety of possible processes. Each protocol is rigorously defined in terms of the commitments undertaken and manipulated by the parties involved. By contrast, traditional approaches as used in the current TWIST specification lead to redundancy in specification and difficulty in understanding the import of the interactions involved. In addition, our approach dis- covered interesting business scenarios that traditional ap- proaches would have missed.

We have built a methodology to verify the interoperability of the various products in an SOA stack based on a case study carried out for a customer.

In this environment, it is very difficult to create and maintain enterprise-wide business processes that can seamlessly work across heterogeneous applications and their versions. Service Oriented Architecture (SOA) could be used to address these problems.

This paper presents how a SOA based solution can be implemented by defining business processes based on common service interfaces and a common data model. By following this approach, we have built a robust architecture and business processes that remain unchanged when underlying applications are retired, replaced, or consolidated.

This paper focuses on the SOA based services model that will allow for the transformation of telecom service providers into a digital media centric content business in a Web 2.0 environment. Based on our industry implementations, we will describe the hierarchy of content services in a layered model of foundational and composite services. This will form our basis for a context aware content services infrastructure.

 

Web services for remote portlets (WSRP) provides standards based interfaces for creation of presentation oriented services using web services technology .However, any WSRP based remote portlet needs to be refreshed every time when even a single data element changes in the portlet. Complementarily, technologies like Asynchronous JavaScript and XML (AJAX) also allow for content aggregation and asynchronous data retrieval. Unlike WSRP, in AJAX only the required control needs to be refreshed, whenever data changes. In AJAX too,, every aggregator is required to include AJAX control accessing the same back end service leading to considerable replication of effort. These two technologies complement each other in terms of ease of sharing of aggregated content and better usability of such content.

Overall, often there is a requirement to dynamically generate UI content from XML data, customize and share aggregated content with remote consumers and finally allow for partial updates of remote aggregated content for better usability. We take a holistic view of the problem statement and propose an end to end architectural approach that combines usage of WSRP, AJAX along with XML syndication feeds like RSS for creation of standards based, customizable, and dynamically generated reusable UI that has better interactivity, speed and usability.

 

Our work focuses on the problem of ensuring prearranged SLAs for service workflow via SLA Aware Workflow Scheduling (SLAAWS). The novel scheduling algorithm takes into account the workflow structure, utilization of component services and Quality of Service (QoS) obligations defined in SLA.

This paper examines the chaotic behavior of sequential workflows in overload situations and discusses the use of call-contexts as a means of avoiding them.