Copyright (c) 2013 Carnegie Mellon University All rights reserved. http://repository.cmu.edu/silicon_valley Recent documents in Silicon Valley Campus en-us Wed, 12 Jun 2013 15:13:04 PDT 3600 http://repository.cmu.edu/silicon_valley/143 http://repository.cmu.edu/silicon_valley/143 Mon, 26 Nov 2012 06:52:41 PST Service Oriented Architecture (SOA) is one central technical foundation supporting the rapidly emerging Cloud Computing paradigm. To date, however, its application practice is not always successful. One major reason is the lack of a systematic engineering process and tool supported by reusable architectural artifacts. Toward this ultimate goal, this paper proposes a variationoriented analysis method of performing architectural building blocks (ABB)-based SOA solution design for enabling cloud application design. We present the modeling of solution-level architectural artifacts and their relationships, whose formalization enables eventbased variation notification and propagation analysis. We report a prototype tool and describe how we extend the Unified Modeling Language (UML) mechanism to implement the system and enable solution-level variation analysis and enforcement in business cloud as an example.

]]> Liang-Jie Zhang et al. Services Computing http://repository.cmu.edu/silicon_valley/142 http://repository.cmu.edu/silicon_valley/142 Mon, 26 Nov 2012 06:52:40 PST For Web services to grow as predicted, researchers must not wait to address the challenges of software trustworthiness

]]> Jia Zhang Services Computing http://repository.cmu.edu/silicon_valley/141 http://repository.cmu.edu/silicon_valley/141 Mon, 26 Nov 2012 06:52:38 PST The paradigm of web services has been transforming the internet from a repository of data into a repository of services, or so-called web services. As more and more web services are published on the internet, how to opt for an appropriate and trustworthy web service poses a big challenge. In this paper we propose a mobile agents-based approach that selects reliable web service components in a cost-effective manner.

]]> Jia Zhang Services Computing http://repository.cmu.edu/silicon_valley/140 http://repository.cmu.edu/silicon_valley/140 Mon, 26 Nov 2012 06:52:36 PST Applying auctions to Web services selection and invocation calls for examination due to the unique features of Web services, such as interoperable machine-to-machine interactions and reenterable bargaining services. In this paper we propose a formal model for Web services-based auctions. Examining one-sided sealed auction type, we prove mathematically that service requestors’ risk preferences could lead to different pricing strategies for service providers towards higher profit. We argue that Service Level Agreement (SLA) documents can be used to analyze service requestors’ preferences. On top of WS-Agreement, we propose a basic service requestor risk preference elicitation algorithm, as well as a historical data-based service requestor risk preference prediction model. Guidelines are provided to iteratively approach the learning rate of the proposed risk preference prediction model. The methods and techniques presented in this paper can be reused to investigate and examine more facades of services-oriented auctions, towards establishing a new research realm on comprehensive services-oriented auctions.

]]> Jia Zhang et al. Services Computing http://repository.cmu.edu/silicon_valley/139 http://repository.cmu.edu/silicon_valley/139 Mon, 26 Nov 2012 06:52:35 PST Jia Zhang et al. Services Computing http://repository.cmu.edu/silicon_valley/138 http://repository.cmu.edu/silicon_valley/138 Mon, 26 Nov 2012 06:52:34 PST In recent years, a number of scientific workflow management systems (SWFMSs) have been developed to help domain scientists synergistically integrate distributed computations, datasets, and analysis tools to enable and accelerate scientific discoveries. As more scientific research projects become collaborative in nature, there is a compelling need of dedicated services to support collaborative scientific workflows on the Internet. This paper reviews the state of the art of the field of scientific workflows towards the support of collaborative scientific workflows, identifies critical research challenges, and presents our ongoing research work aiming to study how to create services supporting collaborative scientific workflows.

]]> Shiyong Lu et al. Net-Centric Collaboration http://repository.cmu.edu/silicon_valley/137 http://repository.cmu.edu/silicon_valley/137 Mon, 26 Nov 2012 06:52:33 PST Phillip A. Laplante et al. Services Computing http://repository.cmu.edu/silicon_valley/136 http://repository.cmu.edu/silicon_valley/136 Mon, 26 Nov 2012 06:52:32 PST Stephen J.H. Yang et al. Semantic Service Discovery http://repository.cmu.edu/silicon_valley/135 http://repository.cmu.edu/silicon_valley/135 Mon, 26 Nov 2012 06:52:30 PST This paper presents our design and development of a context-driven content adaptation planner, which dynamically transforms requested Web content into a proper format conforming to receiving contexts (e.g., access condition, network connection, and receiving device). Aiming to establish a semantic foundation for content adaptation, we apply description logics (DLs) to formally define context profiles and requirements and automate content adaptation decision. In addition, the computational overhead caused by content adaptation can be moderately decreased through the reduction of the size of adapted content

]]> Stephen J.H. Yang et al. Services Computing http://repository.cmu.edu/silicon_valley/134 http://repository.cmu.edu/silicon_valley/134 Mon, 26 Nov 2012 06:52:29 PST Jia Zhang et al. Services Computing http://repository.cmu.edu/silicon_valley/133 http://repository.cmu.edu/silicon_valley/133 Mon, 26 Nov 2012 06:52:28 PST As Web services become more and more popular, how to manage multimedia Web services that can be composed as value-added service solutions remains challenging. This paper presents a service-oriented multimedia componentization model to support Quality of Service (QoS)-centered, device-independent multimedia Web services, which seamlessly incorporates cuttingedge technologies relating to Web services. A multimedia Web service is divided into control flow and data flow, each can be delivered via different infrastructures and channels. Enhancements are proposed to facilitate Simple Object Access Protocol (SOAP) and Composite Capability/Preference Profiles (CC/PP) protocols to improve their flexibility to serve multimedia Web services. We present a set of experiments that show the viability of our service-oriented componentization model that can support efficient delivery and management of multimedia Web services.

]]> Jia Zhang et al. Services Computing http://repository.cmu.edu/silicon_valley/132 http://repository.cmu.edu/silicon_valley/132 Mon, 26 Nov 2012 06:52:27 PST Stephen J.H. Yang et al. Net-Centric Collaboration http://repository.cmu.edu/silicon_valley/131 http://repository.cmu.edu/silicon_valley/131 Mon, 26 Nov 2012 06:52:26 PST Stephen J.H. Yang et al. Services Computing http://repository.cmu.edu/silicon_valley/130 http://repository.cmu.edu/silicon_valley/130 Mon, 26 Nov 2012 06:52:24 PST The emerging paradigm of Web services opens a new way of engineering enterprise Web applications via rapidly developing and deploying Web applications, by composing independently published Web service components to conduct new business transactions. However, how to formally validate and reason about the properties of an enterprise system composed of Web service components remains a challenge. This chapter introduces an advanced topic of enterprise service computing – formal verification and validation of enterprise Web services. The authors introduce a Web Services Net (WS-Net), which is an executable architectural description language incorporating the semantics of Colored Petri Nets with the style and understandability of the Object-Oriented concept and Web services concept. As an architectural model that formalizes the architectural topology and behaviors of each Web service component as well as the entire system, WS-Net facilitates the simulation, verification, and automated composition of Web services.

]]> Jia Zhang et al. Services Computing http://repository.cmu.edu/silicon_valley/129 http://repository.cmu.edu/silicon_valley/129 Mon, 26 Nov 2012 06:52:23 PST In this chapter, we will introduce an advanced topic of grid computing – Web services-oriented grid for business computing. Web services represent a new concept of computing that enables diverse and distributed resources to communicate with each other based upon a set of standards. We will discuss what values the marriage of Web services and grid computing can bring to business computing and the current state of the art of the field. The layout of the chapter is as follows: Grid computing overview; Web services orientation; Service oriented grid; Integrated service platform for integration; and Challenges and considerations.

]]> Zongwei Luo et al. Services Computing http://repository.cmu.edu/silicon_valley/128 http://repository.cmu.edu/silicon_valley/128 Mon, 26 Nov 2012 06:52:22 PST Service-Oriented Architecture (SOA) projects typically pose challenging requirements on software developers such as flexibility, speed to market, and adaptability to ever changing business requirements. In this paper, we propose a novel method of rapidly designing presentation module for an SOA-based solution using fine-grained configurable architectural building blocks (ABBs). An ABB-based presentation pattern derived from industry best practices is presented, associated with a tailored ABB configuration framework. We also introduce a formal way of modeling ABBs and their interactions. Real-life experiences of applying our ABB-based model are condensed into sixteen architectural decision points, which are further applied into a variety of SOA solution projects. Experiences accumulated over these decision points are summarized into a set of guidelines to help engineers select and configure ABBs specific to services scenarios and requirements.

]]> Liang-Jie Zhang et al. Services Computing http://repository.cmu.edu/silicon_valley/127 http://repository.cmu.edu/silicon_valley/127 Mon, 26 Nov 2012 06:52:21 PST This paper reports several key challenges and solutions when we apply Web 2.0 mashup technology to build a university-oriented services portal. A two-layer mashup service model is proposed as the underlying basis to support multiple granularities of services mashup. We explore a caching technique to facilitate personalizable services requests. We also report our preliminary practice of exploiting Facebook as a social relationship data source

]]> Jia Zhang et al. Services Computing http://repository.cmu.edu/silicon_valley/126 http://repository.cmu.edu/silicon_valley/126 Mon, 26 Nov 2012 06:52:19 PST This case study describes the privacy issues of applying Radio Frequency Identification (RFID) in the retail industry. With the dramatic price drop of RFID tags, it is possible that RFID be applied to individual items sold by a retailer. However, the RFID technology poses critical privacy challenges. In this study, we analyze the potential privacy issue of RFID utilization, and we propose a privacy authorization model aiming for precisely defining RFID privacy policies for the retail industry.

]]> Haifei Li et al. Services Computing http://repository.cmu.edu/silicon_valley/125 http://repository.cmu.edu/silicon_valley/125 Mon, 26 Nov 2012 06:52:18 PST GigaPan Conversations is jointly organized by the UNESCO International Bureau of Education (IBE) and Carnegie Mellon University (CMU) in collaboration with the UNESCO Associated Schools Project Network (ASPnet). The objective of this project is to promote empathy and understanding between cultures. Through inquiry-based and participatory practices in the curriculum, this project aims to promote dialogue and exchanges between school-age students on selected topics such as inclusion, Learning to Live Together, equity, cross-cultural inclusion and environment. This is with a view to foster a more in-depth approach to cultural and social issues, as well as enhanced inter-cultural understanding across different geographical regions and cultures. A major focus of the project is to use GigaPan technology and integrate it within a curricular framework to establish a robust Information and Communication Technology (ICT) in Education project capable of delivering tangible improvements in both classroom experience and learning results. This report details the motivation behind this work and initial experiences based on the first pilots conducted between Soweto township (South Africa) and Pittsburgh, Pennsylvania.

]]> Illah Nourbakhsh et al. http://repository.cmu.edu/silicon_valley/124 http://repository.cmu.edu/silicon_valley/124 Sun, 09 Sep 2012 18:58:06 PDT Liang-Jie Zhang et al. Services Computing