Interoperable Web Services Research Articles

Data mediation towards semantic web service interoperability

The interoperability of heterogeneous information systems via semantic web services keeps a real challenge. We propose a service oriented architecture for developing the interoperability mechanism in the information systems of companies. The core of this architecture is a web services semantic mediation infrastructure using a semantic model and the SAWSDL language for resolving mismatches. In the setting of this paper, we present our global approach then retail the data mediation and the semantic model which is based on the ontologies and the notion of context.

Verifying Timed Routing Protocols of Web Service Interoperability

Web services have been widely regarded as the next-generation distributed computing model. Their interoperability involves complex routing protocols. The routing protocol between interoperability, reflected the loose nature of contracts between services, will be stuck due to deadlock occurred in interaction channels when a routing protocol is executed. This may cause economic losses and have negative impact on the communications. Most existing approaches use cryptographic algorithms to protect data for securing the routes. However, these works cannot deal with dynamic behaviors validation. This paper adopts model checking technique to verify the correctness, analyzing the timed property of dynamic routing protocols. It extends the classical automaton models by qualifying the routing protocols as timed I/O automaton (TIOA), specifying the time constraints of interaction between Inputs and Outputs interface. The behavior of each interaction is annotated with execution time and guard condition. Concurrent routing protocols are modeled using synchronous product. After that, the timed properties, such as safety, liveness, reachability, are expressed as temporal logic formulae, namely, TCTL (Timed Computation Tree Logic, TCTL). The verification is performed under model checker UPPAAL. The experiment results show the significant advantage of our method.

유비쿼터스 헬스케어 서비스를 위한 SIP 기반 혈액관리 시스템에 관한 연구

RFID/USN은 유비쿼터스 컴퓨팅을 위한 핵심 기술로써 다양한 센서기술과 프로세서 집적기술 그리고 무선 네트워크 기술을 이용해서 실제 물리적 환경 정보를 원격에서 손쉽게 수집하고 모니터링 하는 것이 가능하다. 특히 의료분야는 U-Healthcare와 결합된 보건의료산업과 서비스에서 국제적인 경쟁력을 확보한 수 있을 것으로 기대되고 있다. 하지만 USN은 RFID의 표준 관리 시스템인 EPCglobal 아키텍처와 갚은 표준 프레임워크의 부재로 상호 운영 및 글로벌 센서 네트워크 구현에 문제점이 있다. 따라서 본 논문에서는 USN의 센서 노드를 관리하는 시스템인 SIP 기반의 USN 관리 시스템 (UMS)을 제안한다. UMS는 세션 관리 기능 및 이동성 지원을 제공하는 SIP(Session Initiation Protocol)라는 인터넷 표준 프로토콜에 기반을 두고 있다. UMS 아키텍처는 기존의 SIP 아키텍처에 UUA(USN User Agent)와 UNS(USN Name Server)를 추가함으로써 이동성을 고려한 센서 노도의 위치 및 상태를 관리하게 된다. UUA는 제한된 능력의 센서 노드를 대신해 위치 등록과정을 수행하고 UNS는 센서 노드의 위치 추적을 위해 이름 변환 서비스를 제공한다. 제안하는 관리 시스템은 하나의 통일된 규격이 존재하지 않는 현재의 센서 네트워크를 통합 및 연동을 쉽게 히여 인터넷을 기반한 글로벌한 센서 네트워크 구축을 가능하게 한다. 또한, 인터넷 표준 프로토콜인 SIP를 사용하기 때문에 다른 서비스 및 프로토콜과의 연동이 쉽고 SIP 기반의 기존 자원을 재활용 활 수 있는 장점을 가진다. 본 논문에서는 제안하는 UMS를 기반으로 혈액관리 시스템의 시나리오를 통해 타당성을 검증한다. RFID/USN core technologies for ubiquitous computing, It is possible to use variety of sensors, direct processors, and wireless network technology that easily collect the actual physical environment and can monitor information remotely. Especially the healthcare industry and services combined with U-Healthcare that have international competitiveness in the medical field. But the USN, standard management system of RFID such as EPCglobal architecture framework, the lack of interoperability issues and the global sensor network implementation. In this paper, a system for managing sensor nodes of the USN, USN of SIP-based management system (UMS) is proposed. UMS support Session Initiation Protocol (SIP), provide session management and mobility capabilities, that is based on Internet standard protocol. UMS architecture of the existing SIP architecture, added USN User Agent (UUA) and the USN Name Server (UNS) that the location of sensor nodes should be possible to trace. UUA on behalf of the limited capacity of the location of the sensor nodes to perform the registration process, UNS to track the location of the sensor nodes to provide name resolution services. The proposed management system has the advantage of internet applications such as Web services interoperability and easy to recycle existing resources with other SIP-based because it uses the Internet standard protocol SIP. In this paper we propose is based on the UMS blood temperature management system is verified through the scenario.

Building asynchronous geospatial processing workflows with web services

Geoscience research and applications often involve a geospatial processing workflow. This workflow includes a sequence of operations that use a variety of tools to collect, translate, and analyze distributed heterogeneous geospatial data. Asynchronous mechanisms, by which clients initiate a request and then resume their processing without waiting for a response, are very useful for complicated workflows that take a long time to run. Geospatial contents and capabilities are increasingly becoming available online as interoperable Web services. This online availability significantly enhances the ability to use Web service chains to build distributed geospatial processing workflows. This paper focuses on how to orchestrate Web services for implementing asynchronous geospatial processing workflows. The theoretical bases for asynchronous Web services and workflows, including asynchrony patterns and message transmission, are examined to explore different asynchronous approaches to and architecture of workflow code for the support of asynchronous behavior. A sample geospatial processing workflow, issued by the Open Geospatial Consortium (OGC) Web Service, Phase 6 (OWS-6), is provided to illustrate the implementation of asynchronous geospatial processing workflows and the challenges in using Web Services Business Process Execution Language (WS-BPEL) to develop them.

Services for prediction of drug susceptibility for HIV proteases and reverse transcriptases at the HIV drug research centre

The HIV Drug Research Centre (HIVDRC) has established Web services for prediction of drug susceptibility for HIV proteases and reverse transcriptases. The services are based on two proteochemometric models which accepts a protease or reverse transcriptase sequence in amino acid form, and outputs the predicted drug susceptibility values. The predictions are based on a comprehensive analysis where all the relevant inhibitors are included, resulting in models with excellent predictive capabilities. The services are implemented as interoperable Web services (REST and XMPP), with supporting web pages to allow for individual analyses. A set of plugins were also developed which make the services available from the Bioclipse workbench for life science. Services are available at http://www.hivdrc.org/services.

Interoperable Semantic Web services (Tutorials)

Interoperable Semantic Web services (Tutorials)

모바일 웹 서비스의 상호운용성 확보를 위한 단말정보 처리 시스템

최근 무선 네트워크의 기술의 발달에 따라 무선단말에서 다양한 콘텐츠의 요구 및 모바일 웹 서비스가 증대되고 있다. 모바일 웹 서비스경우 사용자들의 다양한 콘텐츠 요구나 서비스 사업자 또는 콘텐츠 제공자 모두에게 있어서 표준화된 정보에 의해 모바일 단말정보와 콘텐츠를 교환할 수 있어야 한다. 이는 기존의 서비스 사업자 기반의 단말정보 제공 방안과는 독립적으로 운용될 수 있도록 해야 하며 모바일 웹 서비스에서 다양한 사용자 콘텐츠 서비스를 위해서 꼭 필요한 사항이다. 이에 본 논문에서는 단말정보의 상호운용성을 보장하고 최적화된 모바일 웹 서비스를 제공하기 위하여 콘텐츠를 각기 다른 모바일 단말에 적합한 형식으로 제공하기 위한 호환성 확보형 단말정보 표현 언어(Devices Description Language)를 제안한다. 제안한 단말정보 표현언어를 검증하기 위한 단말정보 처리시스템을 구현하였다. Recently, the demand for various contents and mobile web service has been rising due to the improvement of the techniques of wireless networks. In mobile web service, it is essential to exchange the device informations and contents using specific information which are standardized for users, operators and contents providers. This is based on the existing service providers based on the existing terminal, which provides information to help plan and operate independently of the mobile Web services and content services for various users needs. In this paper, the interoperable DDL is proposed for providing contents to fit with each different mobile device, which contributes toward the optimized mobile web service and guarantee the interoperability of device information. and we implemented the device information processing system, which has the purpose of servicing the device information and verifying the result to the interoperability of mobile web service on proposed DDL and the description language of the device information.

Semantic Web – Interoperability, Usability, Applicability

While this statement seems obvious, this has not been so a few years ago, when basic research funding seemed to be running out, and industrial uptake was hardly happening. In the meantime, we do not only see sustained funding for Semantic Web related research (in particular by the European Commission), but also significant investment by industry, including major IT and venture capital companies. The Semantic Web is here to stay – and to grow. The Semantic Web is multidisciplinary and heterogeneous. Many Semantic Web researchers maintain close ties to neighboring disciplines which provide methods or application areas for their work. However, the Semantic Web has now established itself as a research field in its own rights. Consequently, a growing number of researchers, in particular those of the second or third generation, seem to identify themselves with the Semantic Web as their primary field of work. The growing number of top quality events dedicated to Semantic Web topics is also a clear indication of this trend. Another indicator is the increasing interweavement of Semantic Web methods into related disciplines leading to research topics such as geospatialsemantics, the Semantic Sensor Web, semantic desktop, or work on cultural heritage. The Semantic Web journal is set up to be a forum for highest-quality research contributions on all aspects of the Semantic Web. Its scope encompasses work in neighboring disciplines which is motivated by the Semantic Web vision. Besides the publishing of research contributions, it is also an outlet for reports on tools, systems, applications, and ontologies which enable research, rather than being direct research contributions.1 The journal also publishes top-quality surveys which serve as introductions to core topics of Semantic Web research. The journal’s subtitle – Interoperability, Usability, Applicability – reflects the wide scope of the journal, by putting an emphasis on enabling new technologies and methods. Interoperability refers to aspects such as the seamless integration of data from heterogeneous sources, on-the-fly composition and interoperation of Web services, and next-generation search engines. Usability encompasses new information retrieval paradigms, user interfaces and interaction, and visualization techniques, which in turn require methods for dealing with context dependency, personalization, trust, and provenance, amongst others, while hiding the underlying computational issues from the user. Applicability refers to the rapidly growing application areas of Semantic Web technologies and methods, to the issue of bringing state-of-the-art research results to bear on real-world applications, and to the development of new methods and foundations driven by real application needs from various domains.

Signposting the Crossroads: Terminology Web Services and Classification-Based Interoperability

KO KNOWLEDGE ORGANIZATION , Seite 280 - 286

The DBCLS BioHackathon: standardization and interoperability for bioinformatics web services and workflows. The DBCLS BioHackathon Consortium*.

Web services have become a key technology for bioinformatics, since life science databases are globally decentralized and the exponential increase in the amount of available data demands for efficient systems without the need to transfer entire databases for every step of an analysis. However, various incompatibilities among database resources and analysis services make it difficult to connect and integrate these into interoperable workflows. To resolve this situation, we invited domain specialists from web service providers, client software developers, Open Bio* projects, the BioMoby project and researchers of emerging areas where a standard exchange data format is not well established, for an intensive collaboration entitled the BioHackathon 2008. The meeting was hosted by the Database Center for Life Science (DBCLS) and Computational Biology Research Center (CBRC) and was held in Tokyo from February 11th to 15th, 2008. In this report we highlight the work accomplished and the common issues arisen from this event, including the standardization of data exchange formats and services in the emerging fields of glycoinformatics, biological interaction networks, text mining, and phyloinformatics. In addition, common shared object development based on BioSQL, as well as technical challenges in large data management, asynchronous services, and security are discussed. Consequently, we improved interoperability of web services in several fields, however, further cooperation among major database centers and continued collaborative efforts between service providers and software developers are still necessary for an effective advance in bioinformatics web service technologies.

Developing a grid-enabled spatial Web portal for Internet GIServices and geospatial cyberinfrastructure

Geospatial cyberinfrastructure integrates distributed geographic information processing (DGIP) technology, high-performance computing resources, interoperable Web services, and sharable geographic knowledge to facilitate the advancement of geographic information science (GIScience) research, geospatial technology, and geographic education. This article addresses three major development issues of geospatial cyberinfrastructure: the performance of grid-enabled DGIP services, the integration of Internet GIService resources, and the technical challenges of spatial Web portal implementation. A four-tier grid-enabled Internet GIService framework was designed for geospatial cyberinfrastructure. The advantages of the grid-enabled framework were demonstrated by a spatial Web portal. The spatial Web portal was implemented based on current available Internet technologies and utilizes multiple computing resources and high-performance systems, including local PC clusters and the TeraGrid. By comparing their performance testing results, we found that grid computing (TeraGrid) is more powerful and flexible than local PC clusters. However, job queuing time and relatively poor performance of cross-site computation are the major obstacles of grid computing for geospatial cyberinfrastructure. Detailed analysis of different computational settings and performance testing contributes to a deeper understanding of the improvements of DGIP services and geospatial cyberinfrastructure. This research demonstrates that resource/service integration and performance improvement can be accomplished by deploying the new four-tier grid-enabled Internet GIService framework. This article also identifies four research priorities for developing geospatial cyberinfrastructure: the design of GIS middleware, high-performance geovisualization methods, semantic GIService, and the integration of multiple GIS grid applications.

A data model for processing financial market and news data

Due to immense amounts of data being generated from financial markets in many different formats, professionals and academics face interoperability problems when analysing such data. This paper proposes a data model that gives a coherent view of the information available from financial market data repositories. The novel features of this data model include: modelling the behaviour of an electronic market as an extensible event-based class hierarchy, and using ontologies to represent financial data as a set of inter-related and meaningful events. Using this data model, we develop interoperable web services that process the data at a high level of abstraction using a Service-Oriented Architecture.

On the functional quality of service (FQoS) to discover and compose interoperable web services

Despite its prevalence, the service-oriented architecture (SOA) still has an imperative challenge to achieve interoperability within and across enterprise applications. Minimal conditions for interoperability are: (1) to discover and plug in proper services for integration and (2) to support for seamless data exchanges between component services. A similarity-based approximate matching is a practical approach for both, in that the service discovery relies on functional matches between a query and service descriptions, and the seamless data exchange is granted by mapping information from a service to others. To these ends, this paper comprehensively investigates functional attributes of web services and their manipulation, and particularly highlights an information compatibility and mapping analysis. The functional quality of service (FQoS) allows service discovery and selection to step forward. Simulation results show that the present FQoS metrics are effective in service discovery.

Web service approaches for providing enriched data structures to generalisation operators

Web service technologies can be used to establish an interoperable framework between different generalisation systems. In a previous article three categories of generalisation web services were identified, including support services, operator services and processing services. This paper focuses on the category of support services. In a service‐based generalisation system, the purpose of support services is to assist the generalisation process by providing auxiliary measures, procedures and data structures that allow the representation of structural cartographic knowledge. The structural knowledge of the spatial and semantic context and the modelling of structural and spatial relationships is critical for the understanding of the role of cartographic features and thus for automated generalisation. Support services should extract and model this knowledge from the raw data and make it available to other generalisation operators. On the one hand the structural knowledge can be expressed by enriching map features with additional geometries or attributes. On the other hand, there exist various hierarchical and non‐hierarchical relationships between map features, many of which can be represented by graph data structures. After a brief introduction to the interoperable web service framework, this paper proposes a taxonomy of generalisation support services and discusses its elements. It is then shown how the complex output of such services can be represented for use with web services and stored in a reusable fashion. Finally, the utilisation of support services is illustrated on four implementation examples of support services that also highlight the interactions with the generalisation operators that use these auxiliary services.

Soft computing techniques for web services brokering

To enhance and improve the interoperability of meteorological Web Services, we are currently developing an Integrated Web Services Brokering System (IWB). IWB uses a case-based classifier to automatically discover Web Services. In this paper, we explore the use of rough set techniques for selecting features prior to classification. We demonstrate the effectiveness of this feature technique by comparing it with a leading non-rough set (Information Gain) feature selection technique.

Support for seamless data exchanges between web services through information mapping analysis using kernel methods

A challenging issue to web services interoperability is seamless data exchanges between web services to be composed. A solution to this problem is to establish semantic mappings from an information item to another. To do that, we present an approximate information mapping analysis. We propose a kernel-based structural similarity measure for XML documents. Simulation results with industrial XML data show that the proposed kernel-based measure outperforms other existing methods.

The validation and brokering of competence: Issues of trust and technology

Campus Canada promotes lifelong learning through the articulation of workplace and other experiential learning for academic credit. This paper describes the recent re-development of the Record of Learning (RoL) component of the Campus Canada's e-Portfolio System. In matching the academic members' desires for provision of secure e-transcripts with learners' desires for validation of educational assertions, the RoL provides decentralized secure service without creating clerical log jams. The new RoL system paves the way for web services interoperability between registrar services and for automated creation of secure Records of Learning by workplace trainers. Further development is foreseen to establish the RoL as a separate service interoperable with a variety of e-portfolio and credentialing agencies.

Web Services and Service-Oriented Application Provisioning: An Analytical Study of Application Service Strategies

As a new network computing technology, Web services help reduce application integration cost and have become the foundation for the next generation of service-oriented architecture. While there is ample research on the technological issues of Web services, little has been done thus far on the business implications of this groundbreaking technology. In this paper, we attempt to close this research gap by comparing three application service strategies for providing Web services of complementary functionalities, i.e., independent service vendors (ISVs), joint venture (JV), and strategic alliance (SA). Although Web service integration is analogous to product bundling, the unique features of software integration, such as low integration cost and the possibility of creating an integrated Web service with new functionalities, have led to interesting analytical results not seen in the product bundling literature. We find that the optimal application service strategy is determined by several factors, including the integration cost, the valuations, and market potentials of the individual and integrated Web services. Our study shows that the application service strategy of ISVs is always dominated by the SA, implying that Web service providers benefit from the increased interoperability of Web services. In cases where the integrated Web service is highly valuated and the integration cost is small, JV becomes the optimal application service strategy. In other cases, the Web service providers are better off to form SAs

Automotive supply chain models and technologies: a review of some latest developments

PurposeTo critically review business trends and drivers affecting the performance of supply chains and build‐to‐order initiatives.Design/methodology/approachThis is a comprehensive review of the potential implications of two inbound logistics solutions: supplier parks and the notion of full‐service‐vehicle supply in addition to developing technologies such as web services interoperability, radio frequency identification (RFID) and collaborative product commerce (CPC).FindingsIt is expected that the wide adoption/consolidation of supplier parks and full‐service‐vehicle supply and technologies such as web services interoperability, RFID and CPC will facilitate/promote the adoption of build‐to‐order initiatives.Research limitations/implicationsThe business models and technologies presented in this paper have been developed and exploited mainly in the automotive sector. Their success could have a big impact if transferred to other industries. Only a handful of technologies/business models affecting supply chain management have been reviewed.Practical implicationsThe widespread use of the technologies and inbound logistics solutions presented in this paper might require the development of sophisticated measurement tools to assess the performance of the entire supply chain. The developed tool has to capture the state of the supply chain in terms of synchronisation, bullwhip effect, pipeline inventory, cycle times, stockout and backorder incidents plus other metrics associated to the operation of the firm including sunk costs, invested capital and ROI.Originality/valueThis paper provides a sound review on technologies and business models critical for supply chains developing build‐to‐order capabilities.

Web Services Interoperability Specifications

A proposed conceptual framework for analyzing Web services interoperability issues provides a context for studying existing standards and specifications and for identifying new opportunities to provide automated support, for this technology. Web services are becoming the technology of choice for realizing service-oriented architectures (SOAs). Web services simplify interoperability and, therefore, application integration. They provide a means for wrapping existing applications so developers can access them through standard languages and protocols.