WorldWideScience

Sample records for automated web service

  1. A Semantically Automated Protocol Adapter for Mapping SOAP Web Services to RESTful HTTP Format to Enable the Web Infrastructure, Enhance Web Service Interoperability and Ease Web Service Migration

    OpenAIRE

    Frank Doheny; Paul Jacob; Maria Maleshkova; Owen Molloy; Robert Stewart; Sean Kennedy

    2012-01-01

    Semantic Web Services (SWS) are Web Service (WS) descriptions augmented with semantic information. SWS enable intelligent reasoning and automation in areas such as service discovery, composition, mediation, ranking and invocation. This paper applies SWS to a previous protocol adapter which, operating within clearly defined constraints, maps SOAP Web Services to RESTful HTTP format. However, in the previous adapter, the configuration element is manual and the latency implications are locally b...

  2. A Semantically Automated Protocol Adapter for Mapping SOAP Web Services to RESTful HTTP Format to Enable the Web Infrastructure, Enhance Web Service Interoperability and Ease Web Service Migration

    Directory of Open Access Journals (Sweden)

    Frank Doheny

    2012-04-01

    Full Text Available Semantic Web Services (SWS are Web Service (WS descriptions augmented with semantic information. SWS enable intelligent reasoning and automation in areas such as service discovery, composition, mediation, ranking and invocation. This paper applies SWS to a previous protocol adapter which, operating within clearly defined constraints, maps SOAP Web Services to RESTful HTTP format. However, in the previous adapter, the configuration element is manual and the latency implications are locally based. This paper applies SWS technologies to automate the configuration element and the latency tests are conducted in a more realistic Internet based setting.

  3. Towards Automation Design Time Testing of Web Service Compositions

    Directory of Open Access Journals (Sweden)

    Dessislava Petrova-Antonova

    2012-01-01

    Full Text Available Service-Oriented Architectures (SOA allows software applications to interoperate in a new way in distributed environment. Currently, web services are the most widely adopted technology for implementation of SOA. However, they bring a number of challenges to development as well as to testing. Testing web service compositions is one of the major problems in SOA domain that is due to the unknown context, absence of web service source code, multiple provider coordination,lack of tool support, etc. In such context, the paper proposes a framework, named Testing as a Service Software Architecture (TASSA, which aims to provide design time testing of both functional and nonfunctional behavior of web service compositions described with Business Process Execution Language (BPEL. TASSA consists of set of tools that can be used together with existing development environments of service based applications. The paper focuses on an approach for negative testing and unit testing of BPEL processes. The negative testing is supported by TASSA tool, called Fault Injector tool, which implements a fault injection technique providing messagedelays, wrong message data, etc. The goal of unit testing is to test a BPEL process in isolation from its dependent web services. The isolation technique is implemented in another TASSA tool, named Isolation tool.

  4. Web service composition: a semantic web and automated planning technique application

    Directory of Open Access Journals (Sweden)

    Jaime Alberto Guzmán Luna

    2010-05-01

    Full Text Available This article proposes applying semantic web and artificial intelligence planning techniques to a web services composition model dealing with problems of ambiguity in web service description and handling incomplete web information. The model uses an OWL-S services and implements a planning technique which handles open world semantics in its reasoning process to resolve these problems. This resulted in a web services composition system incorporating a module for interpreting OWL-S services and converting them into a planning problem in PDDL (a planning module handling incomplete information and an execution service module concurrently interacting with the planner for executing each composition plan service.

  5. Automated web service composition supporting conditional branch structures

    Science.gov (United States)

    Wang, Pengwei; Ding, Zhijun; Jiang, Changjun; Zhou, Mengchu

    2014-01-01

    The creation of value-added services by automatic composition of existing ones is gaining a significant momentum as the potential silver bullet in service-oriented architecture. However, service composition faces two aspects of difficulties. First, users' needs present such characteristics as diversity, uncertainty and personalisation; second, the existing services run in a real-world environment that is highly complex and dynamically changing. These difficulties may cause the emergence of nondeterministic choices in the process of service composition, which has gone beyond what the existing automated service composition techniques can handle. According to most of the existing methods, the process model of composite service includes sequence constructs only. This article presents a method to introduce conditional branch structures into the process model of composite service when needed, in order to satisfy users' diverse and personalised needs and adapt to the dynamic changes of real-world environment. UML activity diagrams are used to represent dependencies in composite service. Two types of user preferences are considered in this article, which have been ignored by the previous work and a simple programming language style expression is adopted to describe them. Two different algorithms are presented to deal with different situations. A real-life case is provided to illustrate the proposed concepts and methods.

  6. Towards automated processing of the right of access in inter-organizational Web Service compositions

    DEFF Research Database (Denmark)

    Herkenhöner, Ralph; De Meer, Hermann; Jensen, Meiko;

    2010-01-01

    with trade secret protection. In this paper, we present an automated architecture to enable exercising the right of access in the domain of inter-organizational business processes based on Web Services technology. Deriving its requirements from the legal, economical, and technical obligations, we show...

  7. A Collaborative System Software Solution for Modeling Business Flows Based on Automated Semantic Web Service Composition

    Directory of Open Access Journals (Sweden)

    Ion SMEUREANU

    2009-01-01

    Full Text Available Nowadays, business interoperability is one of the key factors for assuring competitive advantage for the participant business partners. In order to implement business cooperation, scalable, distributed and portable collaborative systems have to be implemented. This article presents some of the mostly used technologies in this field. Furthermore, it presents a software application architecture based on Business Process Modeling Notation standard and automated semantic web service coupling for modeling business flow in a collaborative manner. The main business processes will be represented in a single, hierarchic flow diagram. Each element of the diagram will represent calls to semantic web services. The business logic (the business rules and constraints will be structured with the help of OWL (Ontology Web Language. Moreover, OWL will also be used to create the semantic web service specifications.

  8. An automated and integrated framework for dust storm detection based on ogc web processing services

    Science.gov (United States)

    Xiao, F.; Shea, G. Y. K.; Wong, M. S.; Campbell, J.

    2014-11-01

    Dust storms are known to have adverse effects on public health. Atmospheric dust loading is also one of the major uncertainties in global climatic modelling as it is known to have a significant impact on the radiation budget and atmospheric stability. The complexity of building scientific dust storm models is coupled with the scientific computation advancement, ongoing computing platform development, and the development of heterogeneous Earth Observation (EO) networks. It is a challenging task to develop an integrated and automated scheme for dust storm detection that combines Geo-Processing frameworks, scientific models and EO data together to enable the dust storm detection and tracking processes in a dynamic and timely manner. This study develops an automated and integrated framework for dust storm detection and tracking based on the Web Processing Services (WPS) initiated by Open Geospatial Consortium (OGC). The presented WPS framework consists of EO data retrieval components, dust storm detecting and tracking component, and service chain orchestration engine. The EO data processing component is implemented based on OPeNDAP standard. The dust storm detecting and tracking component combines three earth scientific models, which are SBDART model (for computing aerosol optical depth (AOT) of dust particles), WRF model (for simulating meteorological parameters) and HYSPLIT model (for simulating the dust storm transport processes). The service chain orchestration engine is implemented based on Business Process Execution Language for Web Service (BPEL4WS) using open-source software. The output results, including horizontal and vertical AOT distribution of dust particles as well as their transport paths, were represented using KML/XML and displayed in Google Earth. A serious dust storm, which occurred over East Asia from 26 to 28 Apr 2012, is used to test the applicability of the proposed WPS framework. Our aim here is to solve a specific instance of a complex EO data

  9. Automated Web Applications Testing

    Directory of Open Access Journals (Sweden)

    Alexandru Dan CĂPRIŢĂ

    2009-01-01

    Full Text Available Unit tests are a vital part of several software development practicesand processes such as Test-First Programming, Extreme Programming andTest-Driven Development. This article shortly presents the software quality andtesting concepts as well as an introduction to an automated unit testingframework for PHP web based applications.

  10. CARRIE web service: automated transcriptional regulatory network inference and interactive analysis.

    Science.gov (United States)

    Haverty, Peter M; Frith, Martin C; Weng, Zhiping

    2004-07-01

    We present an intuitive and interactive web service for CARRIE (Computational Ascertainment of Regulatory Relationships Inferred from Expression). CARRIE is a computational method that analyzes microarray and promoter sequence data to infer a transcriptional regulatory network from the response to a specific stimulus. This service displays an interactive graph of the inferred network and provides easy access to the evidence for the involvement of each gene in the network. We provide functionality to include network data in KEGG XML (KGML) format in this graph. Our service also provides Gene Ontology annotation to aid the user in forming hypotheses about the role of each gene in the cellular response. The CARRIE web service is freely available at http://zlab.bu.edu/CARRIE-web.

  11. Using Technology of .Net Web Services in the Area of Automation

    Directory of Open Access Journals (Sweden)

    Martin Hnik

    2009-12-01

    Full Text Available This work deals with a technology for data exchange XML Web Services and its application to specific tasks. One of the applications created allows you to monitor and control the real thermal process through a number of client devices, independent of the operating system, the type or their location. The thermal process can be controlled, for example, by another process, a website or a mobile phone. The system is designed from its base and contains three main parts. The hardware part consists from a measuring card, actuators and temperature sensors. The core application is a server that is running the XML Web Service, Windows Service and SQL Server. Client software for mobile phones and web sites was also created.

  12. AutoSyn:A new approach to automated synthesis of composite web services with correctness guarantee

    Institute of Scientific and Technical Information of China (English)

    HUAI JinPeng; DENG Ting; LI XianXian; DU ZongXia; GUO HuiPeng

    2009-01-01

    How to compose existing web services automatically and to guarantee the correctness of the design (e.g.freeness of deadlock and unspecified reception,and temporal constraints) is an important and challenging problem in web services.Most existing approaches require a detailed specification of the desired behaviors of a composite service beforehand and then perform certain formal verification to guarantee the correctness of the design,which makes the composition process both complex and time-consuming.In this paper,we propose a novel approach,referred to as AutoSyn to compose web services,where the correctness is guaranteed in the synthesis process.For a given set of services,a composite service is automatically constructed based on L* algorithm,which guarantees that the composite service is the most general way of coordinating services so that the correctness is ensured.We show the soundness and completeness of our solution and give a set of optimization techniques for reducing the time consumption.We have implemented a prototype system of AutoSyn and evaluated the effectiveness and efficiency of AutoSyn through an experimental study.

  13. Automating bibliometric analyses using Taverna scientific workflows : A tutorial on integrating Web Services

    NARCIS (Netherlands)

    Guler, A.T.; Waaijer, C.J.F.; Mohammed, Y.; Palmblad, M.

    2016-01-01

    Quantitative analysis of the scientific literature is a frequent task in bibliometrics. Several large online resources collect and disseminate bibliographic information, paving the way for broad analyses and statistics. The Europe PubMed Central (PMC) and its Web Services is one of these resources,

  14. Automated information extraction from web APIs documentation

    OpenAIRE

    Ly, Papa Alioune; Pedrinaci, Carlos; Domingue, John

    2012-01-01

    A fundamental characteristic of Web APIs is the fact that, de facto, providers hardly follow any standard practices while implementing, publishing, and documenting their APIs. As a consequence, the discovery and use of these services by third parties is significantly hampered. In order to achieve further automation while exploiting Web APIs we present an approach for automatically extracting relevant technical information from the Web pages documenting them. In particular we have devised two ...

  15. Semantic web services for web databases

    CERN Document Server

    Ouzzani, Mourad

    2011-01-01

    Semantic Web Services for Web Databases introduces an end-to-end framework for querying Web databases using novel Web service querying techniques. This includes a detailed framework for the query infrastructure for Web databases and services. Case studies are covered in the last section of this book. Semantic Web Services For Web Databases is designed for practitioners and researchers focused on service-oriented computing and Web databases.

  16. Web services foundations

    CERN Document Server

    Bouguettaya, Athman; Daniel, Florian

    2013-01-01

    Web services and Service-Oriented Computing (SOC) have become thriving areas of academic research, joint university/industry research projects, and novel IT products on the market. SOC is the computing paradigm that uses Web services as building blocks for the engineering of composite, distributed applications out of the reusable application logic encapsulated by Web services. Web services could be considered the best-known and most standardized technology in use today for distributed computing over the Internet.Web Services Foundations is the first installment of a two-book collection coverin

  17. Semiautomatic Web service generation

    OpenAIRE

    Fuentes, José María de; Corella, Miguel Ángel; Castells, Pablo; Rico, Mariano

    2005-01-01

    Proceedings of the IADIS International Conference WWW/Internet 2005, held in Lisbon (Portugal). The lack of a critical mass of actually deployed web services, semantic or not, is an important hurdle for the advancement and further innovation in web service technologies. In this paper we introduce Federica, a platform for semi-automatic generation and implementation of semantic web services by exploiting existing web applications published in internet. Federica generates semantical...

  18. Advanced web services

    CERN Document Server

    Bouguettaya, Athman; Daniel, Florian

    2013-01-01

    Web services and Service-Oriented Computing (SOC) have become thriving areas of academic research, joint university/industry research projects, and novel IT products on the market. SOC is the computing paradigm that uses Web services as building blocks for the engineering of composite, distributed applications out of the reusable application logic encapsulated by Web services. Web services could be considered the best-known and most standardized technology in use today for distributed computing over the Internet. This book is the second installment of a two-book collection covering the state-o

  19. Ajax and Web Services

    CERN Document Server

    Pruett, Mark

    2006-01-01

    Ajax and web services are a perfect match for developing web applications. Ajax has built-in abilities to access and manipulate XML data, the native format for almost all REST and SOAP web services. Using numerous examples, this document explores how to fit the pieces together. Examples demonstrate how to use Ajax to access publicly available web services fromYahoo! and Google. You'll also learn how to use web proxies to access data on remote servers and how to transform XML data using XSLT.

  20. MaXIC-Q Web: a fully automated web service using statistical and computational methods for protein quantitation based on stable isotope labeling and LC-MS.

    Science.gov (United States)

    Tsou, Chih-Chiang; Tsui, Yin-Hao; Yian, Yi-Hwa; Chen, Yi-Ju; Yang, Han-Yin; Yu, Chuan-Yih; Lynn, Ke-Shiuan; Chen, Yu-Ju; Sung, Ting-Yi; Hsu, Wen-Lian

    2009-07-01

    Isotope labeling combined with liquid chromatography-mass spectrometry (LC-MS) provides a robust platform for analyzing differential protein expression in proteomics research. We present a web service, called MaXIC-Q Web (http://ms.iis.sinica.edu.tw/MaXIC-Q_Web/), for quantitation analysis of large-scale datasets generated from proteomics experiments using various stable isotope-labeling techniques, e.g. SILAC, ICAT and user-developed labeling methods. It accepts spectral files in the standard mzXML format and search results from SEQUEST, Mascot and ProteinProphet as input. Furthermore, MaXIC-Q Web uses statistical and computational methods to construct two kinds of elution profiles for each ion, namely, PIMS (projected ion mass spectrum) and XIC (extracted ion chromatogram) from MS data. Toward accurate quantitation, a stringent validation procedure is performed on PIMSs to filter out peptide ions interfered with co-eluting peptides or noise. The areas of XICs determine ion abundances, which are used to calculate peptide and protein ratios. Since MaXIC-Q Web adopts stringent validation on spectral data, it achieves high accuracy so that manual validation effort can be substantially reduced. Furthermore, it provides various visualization diagrams and comprehensive quantitation reports so that users can conveniently inspect quantitation results. In summary, MaXIC-Q Web is a user-friendly, interactive, robust, generic web service for quantitation based on ICAT and SILAC labeling techniques.

  1. Semantics-based Automated Web Testing

    Directory of Open Access Journals (Sweden)

    Hai-Feng Guo

    2015-08-01

    Full Text Available We present TAO, a software testing tool performing automated test and oracle generation based on a semantic approach. TAO entangles grammar-based test generation with automated semantics evaluation using a denotational semantics framework. We show how TAO can be incorporated with the Selenium automation tool for automated web testing, and how TAO can be further extended to support automated delta debugging, where a failing web test script can be systematically reduced based on grammar-directed strategies. A real-life parking website is adopted throughout the paper to demonstrate the effectivity of our semantics-based web testing approach.

  2. RESTful Web Services Cookbook

    CERN Document Server

    Allamaraju, Subbu

    2010-01-01

    While the REST design philosophy has captured the imagination of web and enterprise developers alike, using this approach to develop real web services is no picnic. This cookbook includes more than 100 recipes to help you take advantage of REST, HTTP, and the infrastructure of the Web. You'll learn ways to design RESTful web services for client and server applications that meet performance, scalability, reliability, and security goals, no matter what programming language and development framework you use. Each recipe includes one or two problem statements, with easy-to-follow, step-by-step i

  3. Implementation of OGC Web Map Service Based on Web Service

    Institute of Scientific and Technical Information of China (English)

    JIA Wenjue; CHEN Yumin; GONG Jianya

    2004-01-01

    OGC Web Map Service is one kind of OGC Portrayal Services belongs to OGC Web Service model and it provides multi-platform interoperability of spatial data set. This paper presents a method for implementing OGC Web Map Service based on Web Service technique and introduces the detailed process.

  4. Programming NET Web Services

    CERN Document Server

    Ferrara, Alex

    2007-01-01

    Web services are poised to become a key technology for a wide range of Internet-enabled applications, spanning everything from straight B2B systems to mobile devices and proprietary in-house software. While there are several tools and platforms that can be used for building web services, developers are finding a powerful tool in Microsoft's .NET Framework and Visual Studio .NET. Designed from scratch to support the development of web services, the .NET Framework simplifies the process--programmers find that tasks that took an hour using the SOAP Toolkit take just minutes. Programming .NET

  5. Chapter 59: Web Services

    Science.gov (United States)

    Graham, M. J.

    Web services are a cornerstone of the distributed computing infrastructure that the VO is built upon yet to the newcomer, they can appear to be a black art. This perception is not helped by the miasma of technobabble that pervades the subject and the seemingly impenetrable high priesthood of actual users. In truth, however, there is nothing conceptually difficult about web services (unsurprisingly any complexities will lie in the implementation details) nor indeed anything particularly new. A web service is a piece of software available over a network with a formal description of how it is called and what it returns that a computer can understand. Note that entities such as web servers, ftp servers and database servers do not generally qualify as they lack the standardized description of their inputs and outputs. There are prior technologies, such as RMI, CORBA, and DCOM, that have employed a similar approach but the success of web services lies predominantly in its use of standardized XML to provide a language-neutral way for representing data. In fact, the standardization goes further as web services are traditionally (or as traditionally as five years will allow) tied to a specific set of technologies (WSDL and SOAP conveyed using HTTP with an XML serialization). Alternative implementations are becoming increasingly common and we will cover some of these here. One important thing to remember in all of this, though, is that web services are meant for use by computers and not humans (unlike web pages) and this is why so much of it seems incomprehensible gobbledegook. In this chapter, we will start with an overview of the web services current in the VO and present a short guide on how to use and deploy a web service. We will then review the different approaches to web services, particularly REST and SOAP, and alternatives to XML as a data format. We will consider how web services can be formally described and discuss how advanced features such as security, state

  6. Mastering Go web services

    CERN Document Server

    Kozyra, Nathan

    2015-01-01

    If you are a web programmer with experience in developing web services and have a rudimentary knowledge of using Go, then this is the book for you. Basic knowledge of Go as well as knowledge of relational databases and non-relational NoSQL datastores is assumed. Some basic concurrency knowledge is also required.

  7. Airport Status Web Service

    Data.gov (United States)

    Department of Transportation — A web service that allows end-users the ability to query the current known delays in the National Airspace System as well as the current weather from NOAA by airport...

  8. Implementing reliable Web services

    OpenAIRE

    Koskipää, Otto

    2012-01-01

    Web services are a common and standard way to implement communication between information systems and provide documented interfaces. The Web services are usually using SOAP because it is a widely-spread, well-documented and used standard. SOAP standard defines a message structure, an envelope, that is sent over internet using HTTP and contains XML data. An important part of the SOAP structure is the exception mechanism that returns a Fault element in the response. The SOAP Fault is a stan...

  9. Composition de Services Web: Une Approche basée Liens Sémantiques

    OpenAIRE

    Lécué, Freddy

    2008-01-01

    Automated composition of Web services or the process of forming new value added Web services is one of the most promising challenges facing the Semantic Web today. Semantics enables Web service to describe capabilities together with their processes, hence one of the key elements for the automated composition of Web services. In this Ph.D study we focus on the functional level of Web services i.e., services are described according i) to some input, output parameters semantically enhanced by co...

  10. SEMANTIC WEB SERVICES – DISCOVERY, SELECTION AND COMPOSITION TECHNIQUES

    Directory of Open Access Journals (Sweden)

    Sowmya Kamath S

    2013-02-01

    Full Text Available Web services are already one of the most important resources on the Internet. As an integrated solution for realizing the vision of the Next Generation Web, semantic web services combine semantic web technology with web service technology, envisioning automated life cycle management of web services. This paper discusses the significance and importance of service discovery & selection to business logic, and the requisite current research in the various phases of the semantic web service lifecycle like discovery and selection. We also present several different composition strategies, based on current research, and provide an outlook towards critical future work.

  11. Web services development in Java

    OpenAIRE

    Porenta, Dane

    2012-01-01

    We focused on web services and their development. We presented two of the most common types of web services: SOAP and REST web services. We showed how they work, how to develop and ways how client can invoke them. Looking into SOAP web service details we described it's SOAP protocol and WSDL file for describing web service. We also described WS–* specifications and WS–I Basic Profile, which helps with interoperability. After describing SOAP web services, we described REST web services. Here w...

  12. Analyzing Web Service Contracts

    DEFF Research Database (Denmark)

    Cambronero, M.-Emilia; Okika, Joseph C.; Ravn, Anders Peter

    2007-01-01

    Web services should be dependable, because businesses rely on them. For that purpose the Service Oriented Architecture has standardized specifications at a syntactical level. In this paper, we demonstrate how such specifications are used to derive semantic models in the form of (timed) automata...

  13. Distributed Web Service Repository

    Directory of Open Access Journals (Sweden)

    Piotr Nawrocki

    2015-01-01

    Full Text Available The increasing availability and popularity of computer systems has resulted in a demand for new, language- and platform-independent ways of data exchange. That demand has in turn led to a significant growth in the importance of systems based on Web services. Alongside the growing number of systems accessible via Web services came the need for specialized data repositories that could offer effective means of searching of available services. The development of mobile systems and wireless data transmission technologies has allowed the use of distributed devices and computer systems on a greater scale. The accelerating growth of distributed systems might be a good reason to consider the development of distributed Web service repositories with built-in mechanisms for data migration and synchronization.

  14. Personalized Web Services for Web Information Extraction

    CERN Document Server

    Jarir, Zahi; Erradi, Mahammed

    2011-01-01

    The field of information extraction from the Web emerged with the growth of the Web and the multiplication of online data sources. This paper is an analysis of information extraction methods. It presents a service oriented approach for web information extraction considering both web data management and extraction services. Then we propose an SOA based architecture to enhance flexibility and on-the-fly modification of web extraction services. An implementation of the proposed architecture is proposed on the middleware level of Java Enterprise Edition (JEE) servers.

  15. Programming Web services with Perl

    CERN Document Server

    Ray, Randy J

    2003-01-01

    Given Perl's natural fit for web applications development, it's no surprise that Perl is also a natural choice for web services development. It's the most popular web programming language, with strong implementations of both SOAP and XML-RPC, the leading ways to distribute applications using web services. But books on web services focus on writing these applications in Java or Visual Basic, leaving Perl programmers with few resources to get them started. Programming Web Services with Perl changes that, bringing Perl users all the information they need to create web services using their favori

  16. RESTful web services with Dropwizard

    CERN Document Server

    Dallas, Alexandros

    2014-01-01

    A hands-on focused step-by-step tutorial to help you create Web Service applications using Dropwizard. If you are a software engineer or a web developer and want to learn more about building your own Web Service application, then this is the book for you. Basic knowledge of Java and RESTful Web Service concepts is assumed and familiarity with SQL/MySQL and command-line scripting would be helpful.

  17. Web Services Integration on the Fly

    Science.gov (United States)

    2008-12-01

    22 K. WEB SERVICES CHOREOGRAPHY DESCRIPTION LANGUAGE (WS-CDL...Intelligent Framework WSBPEL Web Services Business Process Execution Language WS-CDL Web Services Choreography Description Language WSDL Web...Language (WSBPEL) is a related technology addressing service orchestration. Web Services Choreography and Web Services Security are important areas

  18. Automated Security Testing of Web Widget Interactions

    NARCIS (Netherlands)

    Bezemer, C.-P.; Mesbah, A.; Van Deursen, A.

    2009-01-01

    This paper is a pre-print of: Cor-Paul Bezemer, Ali Mesbah, and Arie van Deursen. Automated Security Testing of Web Widget Interactions. In Proceedings of the 7th joint meeting of the European Software Engineering Conference and the ACM SIGSOFT Symposium on the Foundations of Software Engineering (E

  19. The EMBRACE web service collection.

    Science.gov (United States)

    Pettifer, Steve; Ison, Jon; Kalas, Matús; Thorne, Dave; McDermott, Philip; Jonassen, Inge; Liaquat, Ali; Fernández, José M; Rodriguez, Jose M; Pisano, David G; Blanchet, Christophe; Uludag, Mahmut; Rice, Peter; Bartaseviciute, Edita; Rapacki, Kristoffer; Hekkelman, Maarten; Sand, Olivier; Stockinger, Heinz; Clegg, Andrew B; Bongcam-Rudloff, Erik; Salzemann, Jean; Breton, Vincent; Attwood, Teresa K; Cameron, Graham; Vriend, Gert

    2010-07-01

    The EMBRACE (European Model for Bioinformatics Research and Community Education) web service collection is the culmination of a 5-year project that set out to investigate issues involved in developing and deploying web services for use in the life sciences. The project concluded that in order for web services to achieve widespread adoption, standards must be defined for the choice of web service technology, for semantically annotating both service function and the data exchanged, and a mechanism for discovering services must be provided. Building on this, the project developed: EDAM, an ontology for describing life science web services; BioXSD, a schema for exchanging data between services; and a centralized registry (http://www.embraceregistry.net) that collects together around 1000 services developed by the consortium partners. This article presents the current status of the collection and its associated recommendations and standards definitions.

  20. The EMBRACE web service collection

    DEFF Research Database (Denmark)

    Pettifer, S.; Ison, J.; Kalas, M.

    2010-01-01

    The EMBRACE (European Model for Bioinformatics Research and Community Education) web service collection is the culmination of a 5-year project that set out to investigate issues involved in developing and deploying web services for use in the life sciences. The project concluded that in order...... for web services to achieve widespread adoption, standards must be defined for the choice of web service technology, for semantically annotating both service function and the data exchanged, and a mechanism for discovering services must be provided. Building on this, the project developed: EDAM......, an ontology for describing life science web services; BioXSD, a schema for exchanging data between services; and a centralized registry (http://www.embraceregistry.net) that collects together around 1000 services developed by the consortium partners. This article presents the current status of the collection...

  1. A Web Service Implementation for Large-Scale Automation, Visualization and Real-Time Program Awareness via Lexical Link Analysis

    Science.gov (United States)

    2011-04-30

    Distributed Information and Systems Experimentation ( DISE ). Dr. Gallup has a multi-disciplinary science, engineering, and analysis background, including...http://disedev4.ern.nps.edu:8080/ARP, which is one of few servers dedicated to the project at the NPS DISE lab. Eventually, we will move the service

  2. Consistency Checking of Web Service Contracts

    DEFF Research Database (Denmark)

    Cambronero, M. Emilia; Okika, Joseph C.; Ravn, Anders Peter

    2008-01-01

    Behavioural properties are analyzed for web service contracts formulated in Business Process Execution Language (BPEL) and Choreography Description Language (CDL). The key result reported is an automated technique to check consistency between protocol aspects of the contracts. The contracts...... are abstracted to (timed) automata and from there a simulation is set up, which is checked using automated tools for analyzing networks of finite state processes. Here we use the Concurrency Work Bench. The proposed techniques are illustrated with a case study that include otherwise difficult to analyze fault...

  3. DTDWS-DESIGN OF TESTBED FOR DISTRIBUTED WEB SERVICE ENVIRONMENT

    Directory of Open Access Journals (Sweden)

    D.CHANDRAMOHAN,

    2011-03-01

    Full Text Available Designing and developing a testbed to evaluate the features of web service properties and their service interfaces in a distributed web service environment. This testbed interface helps the clients and their tools to build automatically with the corresponding web services and to identify its related issues in which it can communicate and cooperate among services in a distributed environment. By establishing set of policy and preferences for relevant supporting tools to evaluate the semantic technology of service and enhancing the tuning features by avoiding interoperability among web services. A light weighted application having unique and specific structure for designing testbed for istributed web service environment (DTDWS with a build in concepts encoded with XML (Extensible Mark-up Language. This proposal breed a trustful zone in a distributed environment by an automated simulation,composition and testing techniques are put into service. Many service conflicts are resolved in a timely and consistent approach all the way through our proposed testbed .

  4. Restful Web Service in Java%Java与Restful Web Service

    Institute of Scientific and Technical Information of China (English)

    袁赟

    2007-01-01

    近年来Web服务领域发生着翻天覆地的变化,继传统的XML-RPC风格的Web Service之后,一种新的风格,REST被应用于Web Service.本文主要介绍了Rest构架风格,以及现在Java开发Restful Web Service的主要方式,以及如何实现Restful Web Service的Java和Ajax客户端,最后介绍了Restful Web Service的描述语言WADL.

  5. Towards structural web services discovery

    Institute of Scientific and Technical Information of China (English)

    CHEN Jiang-feng

    2008-01-01

    A syntactic and structural matching mechanism for service discovery was put forward, which tries to exploit the underlying semantics of web services to enhance the traditional syntactic service discovery. We commit WSDL (Web Service Description Language) as service description language. The syntactic matching mechanism is based on the textual similarity among WSDL documents using VSM (Vector Space Model). The structural information is extracted from WSDL document tree or the invocation sequence of a series of services which can be viewed as the problem of graph isomorphism. Then we combine the syntactic and structural similarity linearly to calculate the service similarity. Finally we provide a novel web services discovery framework named SG* to find the exact services meeting the users' goals based on service similarity.

  6. WEB SERVICES COMPOSING BY MULTIAGENT NEGOTIATION

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Composing web services is gained daily attention in Service Oriented Computing.It includes the dynamic discovery,interaction and coordination of agent-based semantic web services.The authors first follow Function Ontology and Automated Mechanism Design for service agents aggregating.Then the problem is formulated but it is ineffective to solve it from the traditional global view.Because the complexity is NP-complete and it is difficult or even impossible to get some personal information.This paper provides a multi-agent negotiation idea in which each participant negotiates under the condition of its reservation payoff being satisfied.Numerical experiment is given and well evaluates the negotiation.

  7. Java与Restful Web Service

    Institute of Scientific and Technical Information of China (English)

    袁赟

    2007-01-01

    近年来Web服务领域发生着翻天覆地的变化,继传统的XML-RPC风格的Web Service之后,一种新的风格,REST被应用于Web Service.本文主要介绍了Rest构架风格,以及现在Java开发Restful Web Service的主要方式,以及如何实现Restful Web Service的Java和Ajax客户端,最后介绍了Restful Web Service的描述语言WADL.

  8. Business aspects of web services

    CERN Document Server

    Weinhardt, Christof; Conte, Tobias

    2011-01-01

    Driven by maturing Web service technologies and the wide acceptance of the service-oriented architecture paradigm, the software industry's traditional business models and strategies have begun to change: software vendors are turning into service providers. In addition, in the Web service market, a multitude of small and highly specialized providers offer modular services of almost any kind and economic value is created through the interplay of various distributed service providers that jointly contribute to form individualized and integrated solutions. This trend can be optimally catalyzed by

  9. Spring Web Services 2 Cookbook

    CERN Document Server

    Sattari, Hamidreza

    2012-01-01

    This is a cookbook full of recipes with the essential code explained clearly and comprehensively. Each chapter is neatly compartmentalized with focused recipes which are perfectly organized for easy reference and understanding. This book is for Java/J2EE developers. As the books covers a variety of topics in Web-Service development, it will serve as a reference guide to those already familiar with Web-Services. Beginners can also use this book to gain real-world experience of Web-Service development.

  10. Programming Web Services with SOAP

    CERN Document Server

    Snell, James L; Kulchenko, Pavel

    2002-01-01

    The web services architecture provides a new way to think about and implement application-to-application integration and interoperability that makes the development platform irrelevant. Two applications, regardless of operating system, programming language, or any other technical implementation detail, communicate using XML messages over open Internet protocols such as HTTP or SMTP. The Simple Open Access Protocol (SOAP) is a specification that details how to encode that information and has become the messaging protocol of choice for Web services.Programming Web Services with SOAP is a detail

  11. Applications of Lexical Link Analysis Web Service for Large-Scale Automation, Validation, Discovery, Visualization, and Real-Time Program Awareness

    Science.gov (United States)

    2012-10-23

    Sciences, and the director of Distributed Information and Systems Experimentation ( DISE ). Dr. Gallup has a multidisciplinary science, engineering, and...Experimentation ( DISE ) research group where he leads multi-disciplinary studies ranging from Maritime Domain Awareness (MDA), to Knowledge Management...Focused Development We continued using the LLA web service, hosted in the NPS Distributed Information and Systems Experimentation ( DISE ) lab with the

  12. SSC RESTful Web Services API

    Data.gov (United States)

    National Aeronautics and Space Administration — The Satellite Situation Center (SSC) web services allow a software developer to use portions of the SSC software in their own applications. SSC is a system to cast...

  13. Web Service: MedlinePlus

    Science.gov (United States)

    ... an alternate method of accessing MedlinePlus data. Base URL https ://wsearch.nlm.nih.gov/ws/query Please ... the Web service. All special characters must be URL encoded. Spaces may be replaced by '+' signs, which ...

  14. DESIGNING DEPENDABLE AGILE LAYERED WEB SERVICES SECURITY ARCHITECTURE SOLUTIONS

    Directory of Open Access Journals (Sweden)

    M.UPENDRA KUMAR

    2011-06-01

    Full Text Available Service Orientation Engineering (SOE (using Web Services and Agile modeling software development presents promising solutions for contemporary software development projects to deal effectively withchallenges in increasingly turbulent business environments typified by unpredictable markets, changing customer requirements, pressures of even shorter time to deliver, and rapidly advancing informationtechnologies. Web Services Security Architectures have three layers, as provided by NIST standard: Web Service Layer, Web Services Framework Layer (.NET or J2EE, and Web Server Layer. In services oriented web services architecture, business processes are executed as a composition of services, which can suffer from vulnerabilities pertaining to secure data access and protecting code of Web Services. The goal of the Web services security architecture is to summary out the details of message-level security from the mainstream business logic, with a focus on Web Service contract design and versioning for SOA. Service oriented web services architectures impose additional analysis complexity as they provide much flexibility and frequentchanges with in orchestrated processes and services. In this paper, we discuss about developing dependable solutions for Web Services Security Architectures using Agile Layered security architectures in terms of Privacy requirements. All this research is motivated by Secure Service Oriented Analysis and Design research domain. We initially validate this by a BPEL Editor using GWT for RBAC and Privacy. Finally a real world case study is implemented using J2EE, for validating our approach. Secure Stock Exchange System using Web Services is to automate the stock exchange works, and can help user make the decisions when it comes to investment.

  15. Interactive Web Services with Java

    DEFF Research Database (Denmark)

    Møller, Anders; Schwartzbach, Michael Ignatieff

    This slide collection about Java Web service programming, JSP, Servlets and JWIG is created by: Anders Møller and Michael I. Schwartzbach at the BRICS research center at University of Aarhus, Denmark.......This slide collection about Java Web service programming, JSP, Servlets and JWIG is created by: Anders Møller and Michael I. Schwartzbach at the BRICS research center at University of Aarhus, Denmark....

  16. Web service composition: a semantic web and automated planning technique application Composición de servicios: una aplicación de la web semántica y las técnicas de planificación automática

    Directory of Open Access Journals (Sweden)

    Guzmán Luna Jaime Alberto

    2008-12-01

    Full Text Available This article proposes applying semantic web and artificial intelligence planning techniques to a web services composition model dealing with problems of ambiguity in web service description and handling incomplete web information. The model uses an OWL-S services and implements a planning technique which handles open world semantics in its reasoning process to resolve these problems. This resulted in a web services composition system incorporating a module for interpreting OWL-S services and converting them into a planning problem in PDDL (a planning module handling incomplete information and an execution service module concurrently interacting with the planner for executing each composition plan service.Este artículo propone la aplicación de técnicas de la web semántica y de planificación de la inteligencia artificial en un modelo de composición de servicios web que enfrenta los problemas de la ambigüedad en la descripción de los servicios y el manejo de la información incompleta en el contexto de la web. Para tratar los problemas mencionados el modelo permite el uso de servi-cios OWL-S e implementa una técnica de planificación que maneja una semántica del mundo abierto en su proceso de razona-miento. Como resultado de este trabajo, se obtuvo un sistema de composición de servicios web que incorpora un módulo que interpreta servicios OWL-S y los convierte a un problema de planificación en PDDL, un módulo de planificación que maneja el problema del conocimiento incompleto y un módulo de ejecución de servicios que interactúa de manera concurrente con el pla-nificador para ejecutar cada uno de los servicios del plan de composición.

  17. RESTful Java web services security

    CERN Document Server

    Enríquez, René

    2014-01-01

    A sequential and easy-to-follow guide which allows you to understand the concepts related to securing web apps/services quickly and efficiently, since each topic is explained and described with the help of an example and in a step-by-step manner, helping you to easily implement the examples in your own projects. This book is intended for web application developers who use RESTful web services to power their websites. Prior knowledge of RESTful is not mandatory, but would be advisable.

  18. WebGen-WPS – Web service for cartographic generalization

    Directory of Open Access Journals (Sweden)

    Kristina Jezdić

    2013-06-01

    Full Text Available The development of web services technology and standardization of spa­tial data usage have initiated the process of automatization of cartogra­phic generalization on the Internet.There are two ways by which web supported cartographic generalization can be accomplished (Foerster 2010:1. Limited control of data representation (selection of layers and symbolization2. Complete control of the generalization process (usage of all generalization procedures with selection of specific parametersThe first option is for users that are amateurs in cartographic generalization, and it enables them to have limited control over the shaping of map content. The second option is intended to be used by experts in cartographic generalization which would support development of automated systems for cartographic generalization.

  19. Web Services in Mobile Applications

    Directory of Open Access Journals (Sweden)

    Octavian DOSPINESCU

    2013-01-01

    Full Text Available Information and communication technologies are designed to support and anticipate the continuing changes of the information society, while outlining new economic, social and cultural dimensions. We see the growth of new business models whose aim is to remove traditional barriers and improve the value of goods and services. Information is a strategic resource and its manipulation raises new problems for all entities involved in the process. Information and communication technologies should be a stable support in managing the flow of data and support the integrity, confidentiality and availability. Concepts such as eBusiness, eCommerce, Software as a Service, Cloud Computing and Social Media are based on web technologies consisting of complex languages, protocols and standards, built around client-server architecture. One of the most used technologies in mobile applications are the Web Services defined as an application model supported by any operating system able to provide certain functionalities using Internet technologies to promote interoperability between various appli-cations and platforms. Web services use HTTP, XML, SSL, SMTP and SOAP, because their stability has proven over the years. Their functionalities are highly variable, with Web services applications exchange type, weather, arithmetic or authentication services. In this article we will talk about SOAP and REST architectures for web services in mobile applications and we will also provide some practical examples based on Android platform.

  20. Benchmarking Performance of Web Service Operations

    OpenAIRE

    Zhang, Shuai

    2011-01-01

    Web services are often used for retrieving data from servers providing information of different kinds. A data providing web service operation returns collections of objects for a given set of arguments without any side effects. In this project a web service benchmark (WSBENCH) is developed to simulate the performance of web service calls. Web service operations are specified as SQL statements. The function generator of WSBENCH converts user specified SQL queries into functions and automatical...

  1. Sending and Addressing Messages in Web Services

    OpenAIRE

    Borkowski, Piotr

    2007-01-01

    This thesis provides an overview of Web Services technology. The concept of Web Services and Service Oriented Architecture are explained. The thesis focuses on the mechanisms for transporting and addressing messages in web services, especially SOAP. It presents the development history of SOAP, an overview of the SOAP 1.2 specification, and the differences between SOAP in version 1.1 and 1.2. Further, the thesis presents two web servers for development and deployment of web services using Java...

  2. Isolation by distance, web service

    OpenAIRE

    Bohonak Andrew J; Jensen Jeffrey L; Kelley Scott T

    2005-01-01

    Abstract Background The population genetic pattern known as "isolation by distance" results from spatially limited gene flow and is a commonly observed phenomenon in natural populations. However, few software programs exist for estimating the degree of isolation by distance among populations, and they tend not to be user-friendly. Results We have created Isolation by Distance Web Service (IBDWS) a user-friendly web interface for determining patterns of isolation by distance. Using this site, ...

  3. Efficient Web Services Policy Combination

    Science.gov (United States)

    Vatan, Farrokh; Harman, Joseph G.

    2010-01-01

    Large-scale Web security systems usually involve cooperation between domains with non-identical policies. The network management and Web communication software used by the different organizations presents a stumbling block. Many of the tools used by the various divisions do not have the ability to communicate network management data with each other. At best, this means that manual human intervention into the communication protocols used at various network routers and endpoints is required. Developing practical, sound, and automated ways to compose policies to bridge these differences is a long-standing problem. One of the key subtleties is the need to deal with inconsistencies and defaults where one organization proposes a rule on a particular feature, and another has a different rule or expresses no rule. A general approach is to assign priorities to rules and observe the rules with the highest priorities when there are conflicts. The present methods have inherent inefficiency, which heavily restrict their practical applications. A new, efficient algorithm combines policies utilized for Web services. The method is based on an algorithm that allows an automatic and scalable composition of security policies between multiple organizations. It is based on defeasible policy composition, a promising approach for finding conflicts and resolving priorities between rules. In the general case, policy negotiation is an intractable problem. A promising method, suggested in the literature, is when policies are represented in defeasible logic, and composition is based on rules for non-monotonic inference. In this system, policy writers construct metapolicies describing both the policy that they wish to enforce and annotations describing their composition preferences. These annotations can indicate whether certain policy assertions are required by the policy writer or, if not, under what circumstances the policy writer is willing to compromise and allow other assertions to take

  4. MedlinePlus Connect: Web Service

    Science.gov (United States)

    ... MedlinePlus Connect → Web Service URL of this page: https://medlineplus.gov/connect/service.html MedlinePlus Connect: Web ... the base URL for the Web service is: https://apps.nlm.nih.gov/medlineplus/services/mpconnect_service. ...

  5. SIDECACHE: Information access, management and dissemination framework for web services

    Directory of Open Access Journals (Sweden)

    Robbins Kay A

    2011-06-01

    Full Text Available Abstract Background Many bioinformatics algorithms and data sets are deployed using web services so that the results can be explored via the Internet and easily integrated into other tools and services. These services often include data from other sites that is accessed either dynamically or through file downloads. Developers of these services face several problems because of the dynamic nature of the information from the upstream services. Many publicly available repositories of bioinformatics data frequently update their information. When such an update occurs, the developers of the downstream service may also need to update. For file downloads, this process is typically performed manually followed by web service restart. Requests for information obtained by dynamic access of upstream sources is sometimes subject to rate restrictions. Findings SideCache provides a framework for deploying web services that integrate information extracted from other databases and from web sources that are periodically updated. This situation occurs frequently in biotechnology where new information is being continuously generated and the latest information is important. SideCache provides several types of services including proxy access and rate control, local caching, and automatic web service updating. Conclusions We have used the SideCache framework to automate the deployment and updating of a number of bioinformatics web services and tools that extract information from remote primary sources such as NCBI, NCIBI, and Ensembl. The SideCache framework also has been used to share research results through the use of a SideCache derived web service.

  6. A Runtime System for Interactive Web Services

    DEFF Research Database (Denmark)

    Brabrand, Claus; Møller, Anders; Sandholm, Anders

    1999-01-01

    Interactive web services are increasingly replacing traditional static web pages. Producing web services seems to require a tremendous amount of laborious low-level coding due to the primitive nature of CGI programming. We present ideas for an improved runtime system for interactive web services ...

  7. A web services choreography scenario for interoperating bioinformatics applications

    Directory of Open Access Journals (Sweden)

    Cheung David W

    2004-03-01

    Full Text Available Abstract Background Very often genome-wide data analysis requires the interoperation of multiple databases and analytic tools. A large number of genome databases and bioinformatics applications are available through the web, but it is difficult to automate interoperation because: 1 the platforms on which the applications run are heterogeneous, 2 their web interface is not machine-friendly, 3 they use a non-standard format for data input and output, 4 they do not exploit standards to define application interface and message exchange, and 5 existing protocols for remote messaging are often not firewall-friendly. To overcome these issues, web services have emerged as a standard XML-based model for message exchange between heterogeneous applications. Web services engines have been developed to manage the configuration and execution of a web services workflow. Results To demonstrate the benefit of using web services over traditional web interfaces, we compare the two implementations of HAPI, a gene expression analysis utility developed by the University of California San Diego (UCSD that allows visual characterization of groups or clusters of genes based on the biomedical literature. This utility takes a set of microarray spot IDs as input and outputs a hierarchy of MeSH Keywords that correlates to the input and is grouped by Medical Subject Heading (MeSH category. While the HTML output is easy for humans to visualize, it is difficult for computer applications to interpret semantically. To facilitate the capability of machine processing, we have created a workflow of three web services that replicates the HAPI functionality. These web services use document-style messages, which means that messages are encoded in an XML-based format. We compared three approaches to the implementation of an XML-based workflow: a hard coded Java application, Collaxa BPEL Server and Taverna Workbench. The Java program functions as a web services engine and interoperates

  8. A Runtime System for Interactive Web Services

    DEFF Research Database (Denmark)

    Brabrand, Claus; Møller, Anders; Sandholm, Anders

    1999-01-01

    Interactive web services are increasingly replacing traditional static web pages. Producing web services seems to require a tremendous amount of laborious low-level coding due to the primitive nature of CGI programming. We present ideas for an improved runtime system for interactive web services...... built on top of CGI running on virtually every combination of browser and HTTP/CGI server. The runtime system has been implemented and used extensively in , a tool for producing interactive web services....

  9. ERNE Web Service API

    Data.gov (United States)

    National Aeronautics and Space Administration — The Early Detection Research Network (EDRN) runs a distributed service known as the EDRN Resource Network Exchange (ERNE). ERNE is a virtual specimen bank. It...

  10. Past, Present, and Future of Web Service

    Science.gov (United States)

    Kitamura, Yasuhiko

    World Wide Web was born as a means to provide information through the Internet. As a number of e-shopping sites are developed on the Internet, the Web provides not only information but also services with which users can interact to buy products. This paper describes the basic standards used in Web service; XML, SOAP, and WSDL, and how Web services are implemented on the Java-based platform Axis. It also mentions the REST-based Web service which gains more attention recently. Finally it forecasts the future of Web service from a viewpoint of Semantic Web.

  11. A new approach to automating services

    OpenAIRE

    2016-01-01

    While many white collar workers may feel threatened by service automation, companies that thoughtfully automate services are finding that the worries are overblown. By pairing humans and robots, companies can deliver better services for less, and jobs can become more interesting.

  12. Semantic Search of Web Services

    Science.gov (United States)

    Hao, Ke

    2013-01-01

    This dissertation addresses semantic search of Web services using natural language processing. We first survey various existing approaches, focusing on the fact that the expensive costs of current semantic annotation frameworks result in limited use of semantic search for large scale applications. We then propose a vector space model based service…

  13. Service quality of web information systems

    OpenAIRE

    Tonta, Yaşar; Soydal, İrem

    2010-01-01

    The recent developments in technology made it possible to provide various services through the Web. Users’ tendencies to request services via the Web and their expectations from the services are increasing gradually. In order to design better web sites and have users continue to use them, it is essential to understand what users expect of web services, how they perceive such service dimensions as security, design and quality along with the ones they value most. Using the survey method, this s...

  14. Bootstrapping quality of Web Services

    Directory of Open Access Journals (Sweden)

    Zainab Aljazzaf

    2015-07-01

    Full Text Available A distributed application may be composed of global services provided by different organizations and having different properties. To select a service from many similar services, it is important to distinguish between them. Quality of services (QoS has been used as a distinguishing factor between similar services and plays an important role in service discovery, selection, and composition. Moreover, QoS is an important contributing factor to the evolution of distributed paradigms, such as service-oriented computing and cloud computing. There are many research works that assess services and justify the QoS at the finding, composition, or binding stages of services. However, there is a need to justify the QoS once new services are registered and before any requestors use them; this is called bootstrapping QoS. Bootstrapping QoS is the process of evaluating the QoS of the newly registered services at the time of publishing the services. Thus, this paper proposes a QoS bootstrapping solution for Web Services and builds a QoS bootstrapping framework. In addition, Service Oriented Architecture (SOA is extended and a prototype is built to support QoS bootstrapping. Experiments are conducted and a case study is presented to test the proposed QoS bootstrapping solution.

  15. Security Aware Mobile Web Service Provisioning

    CERN Document Server

    Srirama, Satish Narayana; Prinz, Wolfgang; Pendyala, Kiran

    2010-01-01

    Mobile data services in combination with profluent web services are seemingly the path breaking domain in current information research. Effectively, these mobile web services will pave the way for exciting performance and security challenges, the core need-to-be-addressed issues. On security front, though a lot of standardized security specifications and implementations exist for web services in the wired networks, not much has been analysed and standardized in the wireless environments. This paper addresses some of the critical challenges in providing security to the mobile web service domain. We first explore mobile web services and their key security issues, with special focus on provisioning based on a mobile web service provider realized by us. Later we discuss state-of-the-art security awareness in the wired and wireless web services, and finally address the realization of security for the mobile web service provisioning with performance analysis results.

  16. Web Services on Rails

    CERN Document Server

    Marshall, Kevin

    2006-01-01

    This PDF will show you how your small business or enterprise can publish its APIs (application programming interface) to a developer community just like the behemoths of the Internet--Google, Yahoo!, eBay, and Amazon. These giants already offer their APIs to other programmers and allow for add-on services and mash-ups to develop from them--but until recently, the capability for most enterprises to do the same was limited by a myriad of competing standards and a lack of easy-to-use tools to accomplish the task. Ruby on Rails levels the playing field for companies by simplifying the process

  17. On formalizing and verifying web services

    Institute of Scientific and Technical Information of China (English)

    Wei Yinxing; Zhang Shensheng; Zhong Farong

    2005-01-01

    Web services are becoming an important paradigm for web-based computing. However the mainstream web service description language such as WSDL (Web Service Description Language) is lack of formal basis. In order to verify the behavioral properties of web services, we adopt the π-calculus as a precise language because it provides many useful facilities such as behavioral equivalence, mobility that are lack in other formal language. The basic elements of WSDL are translated into the terms in the π-calculus. By means of the MWB (Mobility Workbench), a concurrency tool, the behavioral property of web services denoted by processes is verified.

  18. Securing Web Services using Service Token Security

    Directory of Open Access Journals (Sweden)

    Stelian Dumitra

    2014-06-01

    Full Text Available Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Web services are distributed components that enable interaction of software componentsacross organizational boundaries. The main advantages of web services are related to the flexibility and versatility: they support a variety of architectures and are independent of platforms and models. Also, they can expose valuable data, applications and systems of organizations to a variety of external threats. Securing web services is one of the most important topics related to them. This paper describes the core web services specifications, the top threats facing web services and the security fundamentals. At the end of the paper is presented a custom authentication and authorization model (brokered authentication to ensure a robust protection, a model that shows how to authenticate and authorize callers to perform operations and how to access resources. This model uses the following frameworks/standards: Windows Identity Foundation (WIF to apply the principles of claims-based identity, Windows Communication Foundation (WCF, to develop services/client services and integrate with WIF, and Service Token Security (STS, to issue security tokens.The conclusions and the future proposed developments are presented in the end of the paper. /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso

  19. Automated Functional Testing based on the Navigation of Web Applications

    CERN Document Server

    García, Boni; 10.4204/EPTCS.61.4

    2011-01-01

    Web applications are becoming more and more complex. Testing such applications is an intricate hard and time-consuming activity. Therefore, testing is often poorly performed or skipped by practitioners. Test automation can help to avoid this situation. Hence, this paper presents a novel approach to perform automated software testing for web applications based on its navigation. On the one hand, web navigation is the process of traversing a web application using a browser. On the other hand, functional requirements are actions that an application must do. Therefore, the evaluation of the correct navigation of web applications results in the assessment of the specified functional requirements. The proposed method to perform the automation is done in four levels: test case generation, test data derivation, test case execution, and test case reporting. This method is driven by three kinds of inputs: i) UML models; ii) Selenium scripts; iii) XML files. We have implemented our approach in an open-source testing fra...

  20. Earth Science Mining Web Services

    Science.gov (United States)

    Pham, Long; Lynnes, Christopher; Hegde, Mahabaleshwa; Graves, Sara; Ramachandran, Rahul; Maskey, Manil; Keiser, Ken

    2008-01-01

    To allow scientists further capabilities in the area of data mining and web services, the Goddard Earth Sciences Data and Information Services Center (GES DISC) and researchers at the University of Alabama in Huntsville (UAH) have developed a system to mine data at the source without the need of network transfers. The system has been constructed by linking together several pre-existing technologies: the Simple Scalable Script-based Science Processor for Measurements (S4PM), a processing engine at he GES DISC; the Algorithm Development and Mining (ADaM) system, a data mining toolkit from UAH that can be configured in a variety of ways to create customized mining processes; ActiveBPEL, a workflow execution engine based on BPEL (Business Process Execution Language); XBaya, a graphical workflow composer; and the EOS Clearinghouse (ECHO). XBaya is used to construct an analysis workflow at UAH using ADam components, which are also installed remotely at the GES DISC, wrapped as Web Services. The S4PM processing engine searches ECHO for data using space-time criteria, staging them to cache, allowing the ActiveBPEL engine to remotely orchestras the processing workflow within S4PM. As mining is completed, the output is placed in an FTP holding area for the end user. The goals are to give users control over the data they want to process, while mining data at the data source using the server's resources rather than transferring the full volume over the internet. These diverse technologies have been infused into a functioning, distributed system with only minor changes to the underlying technologies. The key to the infusion is the loosely coupled, Web-Services based architecture: All of the participating components are accessible (one way or another) through (Simple Object Access Protocol) SOAP-based Web Services.

  1. Earth Science Mining Web Services

    Science.gov (United States)

    Pham, L. B.; Lynnes, C. S.; Hegde, M.; Graves, S.; Ramachandran, R.; Maskey, M.; Keiser, K.

    2008-12-01

    To allow scientists further capabilities in the area of data mining and web services, the Goddard Earth Sciences Data and Information Services Center (GES DISC) and researchers at the University of Alabama in Huntsville (UAH) have developed a system to mine data at the source without the need of network transfers. The system has been constructed by linking together several pre-existing technologies: the Simple Scalable Script-based Science Processor for Measurements (S4PM), a processing engine at the GES DISC; the Algorithm Development and Mining (ADaM) system, a data mining toolkit from UAH that can be configured in a variety of ways to create customized mining processes; ActiveBPEL, a workflow execution engine based on BPEL (Business Process Execution Language); XBaya, a graphical workflow composer; and the EOS Clearinghouse (ECHO). XBaya is used to construct an analysis workflow at UAH using ADaM components, which are also installed remotely at the GES DISC, wrapped as Web Services. The S4PM processing engine searches ECHO for data using space-time criteria, staging them to cache, allowing the ActiveBPEL engine to remotely orchestrates the processing workflow within S4PM. As mining is completed, the output is placed in an FTP holding area for the end user. The goals are to give users control over the data they want to process, while mining data at the data source using the server's resources rather than transferring the full volume over the internet. These diverse technologies have been infused into a functioning, distributed system with only minor changes to the underlying technologies. The key to this infusion is the loosely coupled, Web- Services based architecture: All of the participating components are accessible (one way or another) through (Simple Object Access Protocol) SOAP-based Web Services.

  2. Test Automation Selenium WebDriver using TestNG

    OpenAIRE

    Bindal, Purnima; Gupta, Sonika

    2014-01-01

    Test automation tools (softwares) are used to control the execution of tests (Application Under Test) and then comparing actual outcomes to the predicted outcomes. Examples of Test Automation tools are HP Quick Test Professional, Selenium, Test Complete, SOAP UI etc. Selenium is a suite of tools for cross-platform automated testing of web applications. It runs on many browsers and operating systems and can be controlled by many programming languages and testing frameworks. Selenium W...

  3. A Study of CAPTCHAs for Securing Web Services

    CERN Document Server

    Banday, M Tariq

    2011-01-01

    Atomizing various Web activities by replacing human to human interactions on the Internet has been made indispensable due to its enormous growth. However, bots also known as Web-bots which have a malicious intend and pretending to be humans pose a severe threat to various services on the Internet that implicitly assume a human interaction. Accordingly, Web service providers before allowing access to such services use various Human Interaction Proof's (HIPs) to authenticate that the user is a human and not a bot. Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) is a class of HIPs tests and are based on Artificial Intelligence. These tests are easier for humans to qualify and tough for bots to simulate. Several Web services use CAPTCHAs as a defensive mechanism against automated Web-bots. In this paper, we review the existing CAPTCHA schemes that have been proposed or are being used to protect various Web services. We classify them in groups and compare them with each other i...

  4. Distributed Management of Concurrent Web Service Transactions

    DEFF Research Database (Denmark)

    Alrifai, Mohammad; Dolog, Peter; Balke, Wolf-Tilo

    2009-01-01

    Business processes involve dynamic compositions of interleaved tasks. Therefore, ensuring reliable transactional processing of Web services is crucial for the success of Web service-based B2B and B2C applications. But the inherent autonomy and heterogeneity of Web services render the applicability...... of conventional ACID transaction models for Web services far from being straightforward. Current Web service transaction models relax the isolation property and rely on compensation mechanisms to ensure atomicity of business transactions in the presence of service failures. However, ensuring consistency...... in the open and dynamic environment of Web services, where interleaving business transactions enter and exit the system independently, remains an open issue. In this paper, we address this problem and propose an architecture that supports concurrency control on the Web services level. An extension...

  5. A Framework for Automatic Web Service Discovery Based on Semantics and NLP Techniques

    OpenAIRE

    Asma Adala; Nabil Tabbane; Sami Tabbane

    2011-01-01

    As a greater number of Web Services are made available today, automatic discovery is recognized as an important task. To promote the automation of service discovery, different semantic languages have been created that allow describing the functionality of services in a machine interpretable form using Semantic Web technologies. The problem is that users do not have intimate knowledge about semantic Web service languages and related toolkits. In this paper, we propose a discovery framework tha...

  6. A Sensor Web and Web Service-Based Approach for Active Hydrological Disaster Monitoring

    Directory of Open Access Journals (Sweden)

    Xi Zhai

    2016-09-01

    Full Text Available Rapid advancements in Earth-observing sensor systems have led to the generation of large amounts of remote sensing data that can be used for the dynamic monitoring and analysis of hydrological disasters. The management and analysis of these data could take advantage of distributed information infrastructure technologies such as Web service and Sensor Web technologies, which have shown great potential in facilitating the use of observed big data in an interoperable, flexible and on-demand way. However, it remains a challenge to achieve timely response to hydrological disaster events and to automate the geoprocessing of hydrological disaster observations. This article proposes a Sensor Web and Web service-based approach to support active hydrological disaster monitoring. This approach integrates an event-driven mechanism, Web services, and a Sensor Web and coordinates them using workflow technologies to facilitate the Web-based sharing and processing of hydrological hazard information. The design and implementation of hydrological Web services for conducting various hydrological analysis tasks on the Web using dynamically updating sensor observation data are presented. An application example is provided to demonstrate the benefits of the proposed approach over the traditional approach. The results confirm the effectiveness and practicality of the proposed approach in cases of hydrological disaster.

  7. Web-based Altimeter Service

    Science.gov (United States)

    Callahan, P. S.; Wilson, B. D.; Xing, Z.; Raskin, R. G.

    2010-12-01

    We have developed a web-based system to allow updating and subsetting of TOPEX data. The Altimeter Service will be operated by PODAAC along with their other provision of oceanographic data. The Service could be easily expanded to other mission data. An Altimeter Service is crucial to the improvement and expanded use of altimeter data. A service is necessary for altimetry because the result of most interest - sea surface height anomaly (SSHA) - is composed of several components that are updated individually and irregularly by specialized experts. This makes it difficult for projects to provide the most up-to-date products. Some components are the subject of ongoing research, so the ability for investigators to make products for comparison or sharing is important. The service will allow investigators/producers to get their component models or processing into widespread use much more quickly. For coastal altimetry, the ability to subset the data to the area of interest and insert specialized models (e.g., tides) or data processing results is crucial. A key part of the Altimeter Service is having data producers provide updated or local models and data. In order for this to succeed, producers need to register their products with the Altimeter Service and to provide the product in a form consistent with the service update methods. We will describe the capabilities of the web service and the methods for providing new components. Currently the Service is providing TOPEX GDRs with Retracking (RGDRs) in netCDF format that has been coordinated with Jason data. Users can add new orbits, tide models, gridded geophysical fields such as mean sea surface, and along-track corrections as they become available and are installed by PODAAC. The updated fields are inserted into the netCDF files while the previous values are retained for comparison. The Service will also generate SSH and SSHA. In addition, the Service showcases a feature that plots any variable from files in netCDF. The

  8. Correct software in web applications and web services

    CERN Document Server

    Thalheim, Bernhard; Prinz, Andreas; Buchberger, Bruno

    2015-01-01

    The papers in this volume aim at obtaining a common understanding of the challenging research questions in web applications comprising web information systems, web services, and web interoperability; obtaining a common understanding of verification needs in web applications; achieving a common understanding of the available rigorous approaches to system development, and the cases in which they have succeeded; identifying how rigorous software engineering methods can be exploited to develop suitable web applications; and at developing a European-scale research agenda combining theory, methods a

  9. A Framework for Dynamic Web Services Composition

    NARCIS (Netherlands)

    Lécué, Freddy; Silva, Eduardo; Ferreira Pires, Luis

    2008-01-01

    Dynamic composition of web services is a promising approach and at the same time a challenging research area for the dissemination of service-oriented applications. It is widely recognised that service semantics is a key element for the dynamic composition of Web services, since it allows the unambi

  10. A Framework for Dynamic Web Services Composition

    NARCIS (Netherlands)

    Lécué, F.; Goncalves da Silva, E.M.; Ferreira Pires, L.

    2007-01-01

    Dynamic composition of web services is a promising approach and at the same time a challenging research area for the dissemination of service-oriented applications. It is widely recognised that service semantics is a key element for the dynamic composition of Web services, since it allows the unambi

  11. Intelligent Overload Control for Composite Web Services

    NARCIS (Netherlands)

    Meulenhoff, P.J.; Ostendorf, D.R.; Zivkovic, M.; Meeuwissen, H.B.; Gijsen, B.M.M.

    2009-01-01

    In this paper, we analyze overload control for composite web services in service oriented architectures by an orchestrating broker, and propose two practical access control rules which effectively mitigate the effects of severe overloads at some web services in the composite service. These two rules

  12. Intelligent overload control for composite web services

    NARCIS (Netherlands)

    Meulenhoff, P.J.; Ostendorf, D.R.; Živković, M.; Meeuwissen, H.B.; Gijsen, B.M.M.

    2009-01-01

    In this paper, we analyze overload control for composite web services in service oriented architectures by an orchestrating broker, and propose two practical access control rules which effectively mitigate the effects of severe overloads at some web services in the composite service. These two rules

  13. The Organizational Role of Web Services

    Science.gov (United States)

    Mitchell, Erik

    2011-01-01

    The workload of Web librarians is already split between Web-related and other library tasks. But today's technological environment has created new implications for existing services and new demands for staff time. It is time to reconsider how libraries can best allocate resources to provide effective Web services. Delivering high-quality services…

  14. Web Services Dependency Networks Analysis

    CERN Document Server

    Cherifi1, Chantal; Santucci, Jean-François

    2013-01-01

    Along with a continuously growing number of publicly available Web services (WS), we are witnessing a rapid development in semantic-related web technologies, which lead to the apparition of semantically described WS. In this work, we perform a comparative analysis of the syntactic and semantic approaches used to describe WS, from a complex network perspective. First, we extract syntactic and semantic WS dependency networks from a collection of publicly available WS descriptions. Then, we take advantage of tools from the complex network field to analyze them and determine their topological properties. We show WS dependency networks exhibit some of the typical characteristics observed in real-world networks, such as small world and scale free properties, as well as community structure. By comparing syntactic and semantic networks through their topological properties, we show the introduction of semantics in WS description allows modeling more accurately the dependencies between parameters, which in turn could l...

  15. Ontology Based Qos Driven Web Service Discovery

    Directory of Open Access Journals (Sweden)

    R Suganyakala

    2011-07-01

    Full Text Available In today's scenario web services have become a grand vision to implement the business process functionalities. With increase in number of similar web services, one of the essential challenges is to discover relevant web service with regard to user specification. Relevancy of web service discovery can be improved by augmenting semantics through expressive formats like OWL. QoS based service selection will play a significant role in meeting the non-functional user requirements. Hence QoS and semantics has been used as finer search constraints to discover the most relevant service. In this paper, we describe a QoS framework for ontology based web service discovery. The QoS factors taken into consideration are execution time, response time, throughput, scalability, reputation, accessibility and availability. The behavior of each web service at various instances is observed over a period of time and their QoS based performance is analyzed.

  16. Automating Information Discovery Within the Invisible Web

    Science.gov (United States)

    Sweeney, Edwina; Curran, Kevin; Xie, Ermai

    A Web crawler or spider crawls through the Web looking for pages to index, and when it locates a new page it passes the page on to an indexer. The indexer identifies links, keywords, and other content and stores these within its database. This database is searched by entering keywords through an interface and suitable Web pages are returned in a results page in the form of hyperlinks accompanied by short descriptions. The Web, however, is increasingly moving away from being a collection of documents to a multidimensional repository for sounds, images, audio, and other formats. This is leading to a situation where certain parts of the Web are invisible or hidden. The term known as the "Deep Web" has emerged to refer to the mass of information that can be accessed via the Web but cannot be indexed by conventional search engines. The concept of the Deep Web makes searches quite complex for search engines. Google states that the claim that conventional search engines cannot find such documents as PDFs, Word, PowerPoint, Excel, or any non-HTML page is not fully accurate and steps have been taken to address this problem by implementing procedures to search items such as academic publications, news, blogs, videos, books, and real-time information. However, Google still only provides access to a fraction of the Deep Web. This chapter explores the Deep Web and the current tools available in accessing it.

  17. MedlinePlus Health Topic Web Service

    Data.gov (United States)

    U.S. Department of Health & Human Services — A search-based Web service that provides access to disease, condition and wellness information via MedlinePlus health topic data in XML format. The service accepts...

  18. Ontology Enabled Generation of Embedded Web Services

    DEFF Research Database (Denmark)

    Hansen, Klaus Marius; Zhang, Weishan; Soares, Goncalo Teofilo Afonso Pinheiro

    2008-01-01

    Web services are increasingly adopted as a service provision mechanism in pervasive computing environments. Implementing web services on networked, embedded devices raises a number of challenges, for example efficiency of web services, handling of variability and dependencies of hardware and soft...... changes of a device. A number of evaluations show that the design of the Limbo compiler is successful in terms of performance of the generated web service, completeness is being applicable to a variety of embedded devices, and usability for developers in creating new services.......Web services are increasingly adopted as a service provision mechanism in pervasive computing environments. Implementing web services on networked, embedded devices raises a number of challenges, for example efficiency of web services, handling of variability and dependencies of hardware...... and software platforms, and of devices state and context changes. To address these challenges, we developed a Web service compiler, Limbo, in which Web Ontology Language (OWL) ontologies are used to make the Limbo compiler aware of its compilation context, such as targeted hardware and software. At the same...

  19. PERBANDINGAN ANTARA “BIG” WEB SERVICE DENGAN RESTFUL WEB SERVICE UNTUK INTEGRASI DATA BERFORMAT GML

    Directory of Open Access Journals (Sweden)

    Adi Nugroho

    2012-01-01

    Full Text Available Web Service with Java: SOAP (JAX-WS/Java API for XML Web Services and Java RESTful Web Service (JAX-RS/Java RESTful API for XML Web Services are now a technology competing with each other in terms of their use for integrates data residing in different systems. Both Web Service technologies, of course, have advantages and disadvantages. In this paper, we discuss the comparison of the two technologies is a Java Web Service in relation to the development of GIS application (Geographic Information System integrates the use of data-formatted GML (Geography Markup Language, which is stored in the system database XML (eXtensible Markup Language.

  20. Semantic Web Services Challenge, Results from the First Year. Series: Semantic Web And Beyond, Volume 8.

    Science.gov (United States)

    Petrie, C.; Margaria, T.; Lausen, H.; Zaremba, M.

    Explores trade-offs among existing approaches. Reveals strengths and weaknesses of proposed approaches, as well as which aspects of the problem are not yet covered. Introduces software engineering approach to evaluating semantic web services. Service-Oriented Computing is one of the most promising software engineering trends because of the potential to reduce the programming effort for future distributed industrial systems. However, only a small part of this potential rests on the standardization of tools offered by the web services stack. The larger part of this potential rests upon the development of sufficient semantics to automate service orchestration. Currently there are many different approaches to semantic web service descriptions and many frameworks built around them. A common understanding, evaluation scheme, and test bed to compare and classify these frameworks in terms of their capabilities and shortcomings, is necessary to make progress in developing the full potential of Service-Oriented Computing. The Semantic Web Services Challenge is an open source initiative that provides a public evaluation and certification of multiple frameworks on common industrially-relevant problem sets. This edited volume reports on the first results in developing common understanding of the various technologies intended to facilitate the automation of mediation, choreography and discovery for Web Services using semantic annotations. Semantic Web Services Challenge: Results from the First Year is designed for a professional audience composed of practitioners and researchers in industry. Professionals can use this book to evaluate SWS technology for their potential practical use. The book is also suitable for advanced-level students in computer science.

  1. Web Service Architecture for e-Learning

    Directory of Open Access Journals (Sweden)

    Xiaohong Qiu

    2005-10-01

    Full Text Available Message-based Web Service architecture provides a unified approach to applications and Web Services that incorporates the flexibility of messaging and distributed components. We propose SMMV and MMMV collaboration as the general architecture of collaboration based on a Web service model, which accommodates both instructor-led learning and participatory learning. This approach derives from our message-based Model-View-Controller (M-MVC architecture of Web applications, comprises an event-driven Publish/Subscribe scheme, and provides effective collaboration with high interactivity of rich Web content for diverse clients over heterogeneous network environments.

  2. An Automatic Web Service Composition Framework Using QoS-Based Web Service Ranking Algorithm.

    Science.gov (United States)

    Mallayya, Deivamani; Ramachandran, Baskaran; Viswanathan, Suganya

    2015-01-01

    Web service has become the technology of choice for service oriented computing to meet the interoperability demands in web applications. In the Internet era, the exponential addition of web services nominates the "quality of service" as essential parameter in discriminating the web services. In this paper, a user preference based web service ranking (UPWSR) algorithm is proposed to rank web services based on user preferences and QoS aspect of the web service. When the user's request cannot be fulfilled by a single atomic service, several existing services should be composed and delivered as a composition. The proposed framework allows the user to specify the local and global constraints for composite web services which improves flexibility. UPWSR algorithm identifies best fit services for each task in the user request and, by choosing the number of candidate services for each task, reduces the time to generate the composition plans. To tackle the problem of web service composition, QoS aware automatic web service composition (QAWSC) algorithm proposed in this paper is based on the QoS aspects of the web services and user preferences. The proposed framework allows user to provide feedback about the composite service which improves the reputation of the services.

  3. A web service infrastructure for thermochemical data.

    Science.gov (United States)

    Paolini, Christopher P; Bhattacharjee, Subrata

    2008-07-01

    W3C standardized Web Services are becoming an increasingly popular middleware technology used to facilitate the open exchange of chemical data. While several projects in existence use Web Services to wrap existing commercial and open-source tools that mine chemical structure data, no Web Service infrastructure has yet been developed to compute thermochemical properties of substances. This work presents an infrastructure of Web Services for thermochemical data retrieval. Several examples are presented to demonstrate how our Web Services can be called from Java, through JavaScript using an AJAX methodology, and within commonly used commercial applications such as Microsoft Excel and MATLAB for use in computational work. We illustrate how a JANAF table, widely used by chemists and engineers, can be quickly reproduced through our Web Service infrastructure.

  4. QoS management of web services

    CERN Document Server

    Zheng, Zibin

    2013-01-01

    Quality-of-Service (QoS) is normally used to describe the non-functional characteristics of Web services and as a criterion for evaluating different Web services. QoS Management of Web Services presents an innovative QoS evaluation framework for these services. Moreover, three QoS prediction methods and two methods for creating fault-tolerant Web services are also proposed in this book. It not only provides the latest research findings, but also presents an excellent overview of the QoS management of Web services, making it a valuable resource for researchers and graduate students in service computing.   Zibin Zheng is an associate research fellow at the Shenzhen Research Institute, the Chinese University of Hong Kong, China. Professor Michael R. Lyu also works at the same institute.

  5. An Adaptive Trust Model of Web Services

    Institute of Scientific and Technical Information of China (English)

    SU Jin-dian; GUO He-qing; GAO Yin

    2005-01-01

    This paper proposes a dynamic Web service trust(WS Trust ) model, and some corresponding trust metric evaluation algorithms. The main goal is to evaluate the trustworthiness and predict the future behaviors of entities in order to help users find trustworthy Web service providers and prevent users from providing unfair ratings against service providers.

  6. Multilabel Learning for Automatic Web Services Tagging

    OpenAIRE

    Mustapha AZNAG; Mohamed QUAFAFOU; Jarir, Zahi

    2014-01-01

    Recently, some web services portals and search engines as Biocatalogue and Seekda!, have allowed users to manually annotate Web services using tags. User Tags provide meaningful descriptions of services and allow users to index and organize their contents. Tagging technique is widely used to annotate objects in Web 2.0 applications. In this paper we propose a novel probabilistic topic model (which extends the CorrLDA model - Correspondence Latent Dirichlet Allocation-) to automatically tag we...

  7. Domain Specific Languages for Interactive Web Services

    DEFF Research Database (Denmark)

    Brabrand, Claus

    This dissertation shows how domain specific languages may be applied to the domain of interactive Web services to obtain flexible, safe, and efficient solutions. We show how each of four key aspects of interactive Web services involving sessions, dynamic creation of HTML/XML documents, form field......, , that supports virtually all aspects of the development of interactive Web services and provides flexible, safe, and efficient solutions....

  8. Indexer Based Dynamic Web Services Discovery

    CERN Document Server

    Bashir, Saba; Javed, M Younus; Khan, Aihab; Khiyal, Malik Sikandar Hayat

    2010-01-01

    Recent advancement in web services plays an important role in business to business and business to consumer interaction. Discovery mechanism is not only used to find a suitable service but also provides collaboration between service providers and consumers by using standard protocols. A static web service discovery mechanism is not only time consuming but requires continuous human interaction. This paper proposed an efficient dynamic web services discovery mechanism that can locate relevant and updated web services from service registries and repositories with timestamp based on indexing value and categorization for faster and efficient discovery of service. The proposed prototype focuses on quality of service issues and introduces concept of local cache, categorization of services, indexing mechanism, CSP (Constraint Satisfaction Problem) solver, aging and usage of translator. Performance of proposed framework is evaluated by implementing the algorithm and correctness of our method is shown. The results of p...

  9. A Web Service Framework for Economic Applications

    Directory of Open Access Journals (Sweden)

    Dan BENTA

    2010-01-01

    Full Text Available The Internet offers multiple solutions to linkcompanies with their partners, customers or suppliersusing IT solutions, including a special focus on Webservices. Web services are able to solve the problem relatedto the exchange of data between business partners, marketsthat can use each other's services, problems ofincompatibility between IT applications. As web servicesare described, discovered and accessed programs based onXML vocabularies and Web protocols, Web servicesrepresents solutions for Web-based technologies for smalland medium-sized enterprises (SMEs. This paper presentsa web service framework for economic applications. Also, aprototype of this IT solution using web services waspresented and implemented in a few companies from IT,commerce and consulting fields measuring the impact ofthe solution in the business environment development.

  10. Realizing Mobile Web Services for Dynamic Applications

    Science.gov (United States)

    Zaplata, Sonja; Dreiling, Viktor; Lamersdorf, Winfried

    Use of web services also on mobile devices becomes increasingly relevant. However, realizing such mobile web services based on the standard protocol stack is often inappropriate for resource-restricted mobile devices in dynamic networks. On the other hand, using specialized alternative protocols restricts compatibility with traditional service applications. Thus, existing approaches often do not allow to integrate heterogeneous service instances dynamically, as it is, e.g., required for executing mobile service-based business processes.

  11. A Survey on Formal Methods for Web Service Composition

    OpenAIRE

    Wang, Yong

    2013-01-01

    Web Service Composition creates new composite Web Services from existing Web Services which embodies the added values of Web Service technology and is a key technology to solve cross-organizational business process integrations. We do a survey on formal methods for Web Service Composition in the following way. Through analyses of Web Service Composition, we establish a reference model called RM-WSComposition to capture elements of Web Service Composition. Based on the RM-WSComposition, issues...

  12. Immune Algorithm for Selecting Optimum Services in Web Services Composition

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    For the problem of dynamic optimization in Web services composition, this paper presents a novel approach for selecting optimum Web services, which is based on the longest path method of weighted multistage graph. We propose and implement an Immune Algorithm for global optimization to construct composed Web services. Results of the experimentation illustrates that the algorithm in this paper has a powerful capability and can greatly improve the efficiency and veracity in service selection.

  13. Using Web Services for Open Service and Integration

    Directory of Open Access Journals (Sweden)

    Shien-Chiang Yu

    2003-06-01

    Full Text Available A Web Service is a distributed application component based on the interchanging XML-encoded messages. Through standard protocols and methods, it provides distributed transaction in simplification and standardization. This Web Service can be used in the integrated information system as well as the service requirements of Open Digital Library. The purpose of this article is to tackle the problems of web services architecture, its associated standards, and issues of application.[Article content in Chinese

  14. Multilabel Learning for Automatic Web Services Tagging

    Directory of Open Access Journals (Sweden)

    Mustapha AZNAG

    2014-08-01

    Full Text Available Recently, some web services portals and search engines as Biocatalogue and Seekda!, have allowed users to manually annotate Web services using tags. User Tags provide meaningful descriptions of services and allow users to index and organize their contents. Tagging technique is widely used to annotate objects in Web 2.0 applications. In this paper we propose a novel probabilistic topic model (which extends the CorrLDA model - Correspondence Latent Dirichlet Allocation- to automatically tag web services according to existing manual tags. Our probabilistic topic model is a latent variable model that exploits local correlation labels. Indeed, exploiting label correlations is a challenging and crucial problem especially in multi-label learning context. Moreover, several existing systems can recommend tags for web services based on existing manual tags. In most cases, the manual tags have better quality. We also develop three strategies to automatically recommend the best tags for web services. We also propose, in this paper, WS-Portal; An Enriched Web Services Search Engine which contains 7063 providers, 115 sub-classes of category and 22236 web services crawled from the Internet. In WS-Portal, severals technologies are employed to improve the effectiveness of web service discovery (i.e. web services clustering, tags recommendation, services rating and monitoring. Our experiments are performed out based on real-world web services. The comparisons of Precision@n, Normalised Discounted Cumulative Gain (NDCGn values for our approach indicate that the method presented in this paper outperforms the method based on the CorrLDA in terms of ranking and quality of generated tags.

  15. Approach to Enterprise Application Integration with Web Services

    Institute of Scientific and Technical Information of China (English)

    林春梅; 金鑫; 何跃; 陈家训

    2004-01-01

    Enterprise Application Integration (EAI) would be linking diverse systems and applications across the enterprise to enable the enterprise IT systems to adapt to the dynamic business environment and automate any business practices.Whereas, with traditional EAI solution, it is difficult to efficiently link the different proprietary applications and data sources, and difficult to enable the system to rapidly identify and respond to changes in the dynamic business environment. In order to solve these problems, this paper uses the Web Services technology for EAI. This paper discusses the traditional EAI technologies and the bottlenecks for applications integration, also elaborates the Web Services technology and the advantages suited for applications integration. Therefore, the model of EAI with Web Services (EAIWS) is proposed to efficiently implement the integration of diverse applications and systems within or between the enterprises. With EAIWS, this paper provides an example to show how the application system works. This paper also discusses the advantages of EAIWS.

  16. Isolation by distance, web service

    Directory of Open Access Journals (Sweden)

    Bohonak Andrew J

    2005-03-01

    Full Text Available Abstract Background The population genetic pattern known as "isolation by distance" results from spatially limited gene flow and is a commonly observed phenomenon in natural populations. However, few software programs exist for estimating the degree of isolation by distance among populations, and they tend not to be user-friendly. Results We have created Isolation by Distance Web Service (IBDWS a user-friendly web interface for determining patterns of isolation by distance. Using this site, population geneticists can perform a variety of powerful statistical tests including Mantel tests, Reduced Major Axis (RMA regression analysis, as well as calculate FST between all pairs of populations and perform basic summary statistics (e.g., heterozygosity. All statistical results, including publication-quality scatter plots in Postscript format, are returned rapidly to the user and can be easily downloaded. Conclusion IBDWS population genetics analysis software is hosted at http://phage.sdsu.edu/~jensen/ and documentation is available at http://www.bio.sdsu.edu/pub/andy/IBD.html. The source code has been made available on Source Forge at http://sourceforge.net/projects/ibdws/.

  17. Building Grid applications using Web Services

    CERN Document Server

    CERN. Geneva

    2004-01-01

    There has been a lot of discussion within the Grid community about the use of Web Services technologies in building large-scale, loosely-coupled, cross-organisation applications. In this talk we are going to explore the principles that govern Service-Oriented Architectures and the promise of Web Services technologies for integrating applications that span administrative domains. We are going to see how existing Web Services specifications and practices could provide the necessary infrastructure for implementing Grid applications. Biography Dr. Savas Parastatidis is a Principal Research Associate at the School of Computing Science, University of Newcastle upon Tyne, UK. Savas is one of the authors of the "Grid Application Framework based on Web Services Specifications and Practices" document that was influential in the convergence between Grid and Web Services and the move away from OGSI (more information can be found at http://www.neresc.ac.uk/ws-gaf). He has done research on runtime support for distributed-m...

  18. Daios : Efficient Dynamic Web Service Invocation

    NARCIS (Netherlands)

    Leitner, Philipp; Rosenberg, Florian; Dustdar, Schahram

    2009-01-01

    Systems based on the service-oriented architecture (SOA) paradigm must be able to bind to arbitrary Web services at runtime. However, current service frameworks are predominantly used through precompiled service-access components, which are invariably hard-wired to a specific service provider. The D

  19. ChemSpell Web Service API

    Data.gov (United States)

    U.S. Department of Health & Human Services — The ChemSpell Web Service API provides chemical name spell checking and chemical name synonym look-up. ChemSpell contains more than 1.3 million chemical names...

  20. A Middleware road towards Web (Grid) Services

    CERN Document Server

    Ahmed, Zeeshan

    2010-01-01

    Middleware technologies is a very big field, containing a strong already done research as well as the currently running research to confirm already done research's results and the to have some new solution by theoretical as well as the experimental (practical) way. This document has been produced by Zeeshan Ahmed (Student: Connectivity Software Technologies Blekinge Institute of Technologies). This describes the research already done in the field of middleware technologies including Web Services, Grid Computing, Grid Services and Open Grid Service Infrastructure & Architecture. This document concludes with the overview of Web (Grid) Service, Chain of Web (Grid) Services and the necessary security issue.

  1. NISS WebSwap: A Web Service for Data Swapping

    Directory of Open Access Journals (Sweden)

    Ashish Sanil

    2003-03-01

    Full Text Available Data swapping is a statistical disclosure limitation practice that alters records in the data to be released by switching values of attributes across pairs of records in a fraction of the original data. Web Services are an exciting new form of distributed computing that allow users to invoke remote applications nearly transparently. National Institute of Statistical Sciences (NISS has recently started hosting NISS Web Services as a service and example to the statistical sciences community. In this paper we describe and provide usage information for NISS WebSwap the initial NISS Web Service, which swaps one or more attributes (fields between user-specified records in a microdata file, uploading the original data file from the user's computer and downloading the file containing the swapped records.

  2. Java ME Clients for XML Web Services

    Directory of Open Access Journals (Sweden)

    Paul POCATILU

    2008-01-01

    Full Text Available Using Web services in developing applications has many advantages like the existence of standards, multiple software platforms that support them, and many areas of usage. These advantages derive from the XML and Web technologies. This paper describes the stages in the development of a Web service client for Java ME platform and presents examples based on kSOAP and JSR 172.

  3. Nonblocking Scheduling for Web Service Transactions

    DEFF Research Database (Denmark)

    Alrifai, Mohammad; Balke, Wolf-Tilo; Dolog, Peter

    2007-01-01

    For improved flexibility and concurrent usage existing transaction management models for Web services relax the isolation property of Web service-based transactions. Correctness of the concurrent execution then has to be ensured by commit order-preserving transaction schedulers. However, local...

  4. Automated Functional Testing based on the Navigation of Web Applications

    Directory of Open Access Journals (Sweden)

    Boni García

    2011-08-01

    Full Text Available Web applications are becoming more and more complex. Testing such applications is an intricate hard and time-consuming activity. Therefore, testing is often poorly performed or skipped by practitioners. Test automation can help to avoid this situation. Hence, this paper presents a novel approach to perform automated software testing for web applications based on its navigation. On the one hand, web navigation is the process of traversing a web application using a browser. On the other hand, functional requirements are actions that an application must do. Therefore, the evaluation of the correct navigation of web applications results in the assessment of the specified functional requirements. The proposed method to perform the automation is done in four levels: test case generation, test data derivation, test case execution, and test case reporting. This method is driven by three kinds of inputs: i UML models; ii Selenium scripts; iii XML files. We have implemented our approach in an open-source testing framework named Automatic Testing Platform. The validation of this work has been carried out by means of a case study, in which the target is a real invoice management system developed using a model-driven approach.

  5. Building GIS Web Services on JXTA Network

    Institute of Scientific and Technical Information of China (English)

    WANG Leichun; GUAN Jihong; ZHOU Shuigeng

    2004-01-01

    In recent years, Web services and Peer-to-Peer (or simply P2P) appear as two of the hottest research topics in network computing. On the one hand, by adopting a decentralized, network-based style, P2P technologies can make P2P systems enhance overall reliability and fault-tolerance, increase autonomy, and enable ad-hoc communication and collaboration. On the other hand, Web services provides a good approach to integrate various heterogeneous systems and applications into a cooperative environment. This paper presents the techniques of combining Web services and P2P technologies into GIS to construct a new generation of GIS, which is more flexible and cooperative. As a case study, an ongoing project JGWS is introduced, which is an experimental GIS Web services platform built on JXTA. This paper also explores the schemes of building GIS Web services in a P2P environment.

  6. Correlated Topic Model for Web Services Ranking

    Directory of Open Access Journals (Sweden)

    Mustapha AZNAG

    2013-07-01

    Full Text Available With the increasing number of published Web services providing similar functionalities, it’s very tedious for a service consumer to make decision to select the appropriate one according to her/his needs. In this paper, we explore several probabilistic topic models: Probabilistic Latent Semantic Analysis (PLSA, Latent Dirichlet Allocation (LDA and Correlated Topic Model (CTM to extract latent factors from web service descriptions. In our approach, topic models are used as efficient dimension reduction techniques, which are able to capture semantic relationships between word-topic and topic-service interpreted in terms of probability distributions. To address the limitation of keywords-based queries, we represent web service description as a vector space and we introduce a new approach for discovering and ranking web services using latent factors. In our experiment, we evaluated our Service Discovery and Ranking approach by calculating the precision (P@n and normalized discounted cumulative gain (NDCGn.

  7. Enriching the Web Processing Service

    Science.gov (United States)

    Wosniok, Christoph; Bensmann, Felix; Wössner, Roman; Kohlus, Jörn; Roosmann, Rainer; Heidmann, Carsten; Lehfeldt, Rainer

    2014-05-01

    The OGC Web Processing Service (WPS) provides a standard for implementing geospatial processes in service-oriented networks. In its current version 1.0.0 it allocates the operations GetCapabilities, DescribeProcess and Execute, which can be used to offer custom processes based on single or multiple sub-processes. A large range of ready to use fine granular, fundamental geospatial processes have been developed by the GIS-community in the past. However, modern use cases or whole workflow processes demand specifications of lifecycle management and service orchestration. Orchestrating smaller sub-processes is a task towards interoperability; a comprehensive documentation by using appropriate metadata is also required. Though different approaches were tested in the past, developing complex WPS applications still requires programming skills, knowledge about software libraries in use and a lot of effort for integration. Our toolset RichWPS aims at providing a better overall experience by setting up two major components. The RichWPS ModelBuilder enables the graphics-aided design of workflow processes based on existing local and distributed processes and geospatial services. Once tested by the RichWPS Server, a composition can be deployed for production use on the RichWPS Server. The ModelBuilder obtains necessary processes and services from a directory service, the RichWPS semantic proxy. It manages the lifecycle and is able to visualize results and debugging-information. One aim will be to generate reproducible results; the workflow should be documented by metadata that can be integrated in Spatial Data Infrastructures. The RichWPS Server provides a set of interfaces to the ModelBuilder for, among others, testing composed workflow sequences, estimating their performance and to publish them as common processes. Therefore the server is oriented towards the upcoming WPS 2.0 standard and its ability to transactionally deploy and undeploy processes making use of a WPS

  8. Space Physics Data Facility Web Services

    Science.gov (United States)

    Candey, Robert M.; Harris, Bernard T.; Chimiak, Reine A.

    2005-01-01

    The Space Physics Data Facility (SPDF) Web services provides a distributed programming interface to a portion of the SPDF software. (A general description of Web services is available at http://www.w3.org/ and in many current software-engineering texts and articles focused on distributed programming.) The SPDF Web services distributed programming interface enables additional collaboration and integration of the SPDF software system with other software systems, in furtherance of the SPDF mission to lead collaborative efforts in the collection and utilization of space physics data and mathematical models. This programming interface conforms to all applicable Web services specifications of the World Wide Web Consortium. The interface is specified by a Web Services Description Language (WSDL) file. The SPDF Web services software consists of the following components: 1) A server program for implementation of the Web services; and 2) A software developer s kit that consists of a WSDL file, a less formal description of the interface, a Java class library (which further eases development of Java-based client software), and Java source code for an example client program that illustrates the use of the interface.

  9. A Framework for Automatic Web Service Discovery Based on Semantics and NLP Techniques

    Directory of Open Access Journals (Sweden)

    Asma Adala

    2011-01-01

    Full Text Available As a greater number of Web Services are made available today, automatic discovery is recognized as an important task. To promote the automation of service discovery, different semantic languages have been created that allow describing the functionality of services in a machine interpretable form using Semantic Web technologies. The problem is that users do not have intimate knowledge about semantic Web service languages and related toolkits. In this paper, we propose a discovery framework that enables semantic Web service discovery based on keywords written in natural language. We describe a novel approach for automatic discovery of semantic Web services which employs Natural Language Processing techniques to match a user request, expressed in natural language, with a semantic Web service description. Additionally, we present an efficient semantic matching technique to compute the semantic distance between ontological concepts.

  10. On the performance of web services

    CERN Document Server

    Tari, Zahir; Jayasinghe, Malith

    2011-01-01

    Performance of Web Services provides innovative techniques to improve the performance of Web Services, as well as QoS (Quality of Service) requirements. This includes Qos performance, reliability and security. The author presents two levels of Web Services: the ""kernel"" (ithe SOAP engine which delivers messages from one point to another through various networks), and the ""server side"" (which processes heavy load / requests). The primary objective of this book is execution of applications delivered in a timely fashion. Case studies and examples are provided throughout this book.

  11. Semantic Web Services and Its Approaches

    Directory of Open Access Journals (Sweden)

    Tauqeer Ahmad Usmani,

    2011-07-01

    Full Text Available OWL-S, IRS, WSMF are the prominent field that are the major part for Semantic Web Services. IRS-III is the first WSMO Compliant and implemented structure to support Semantic Web Services.IRS-III is the extension of previous version of IRS-II and supporting WSMO ontology within the IRS-III Server, browser and API.IRS-III provides support for the OWL-S service descriptions by importing the description to IRS-III. This paper describes about different approaches of Semantic WebServices.

  12. Improving query services of web map by web mining

    Science.gov (United States)

    Huang, Maojun

    2007-11-01

    Web map is the hybrid of map and the World Wide Web (known as Web). It is usually created with WebGIS techniques. With the rapid social development, web maps oriented the public are facing pressure that dissatisfy the increased demanding. The geocoding database plays a key role in supporting query services effectively. The traditional geocoding method is laborious and time-consuming. And there is much online spatial information, which would be the supplementary information source for geocoding. Therefore, this paper discusses how to improve query services by web mining. The improvement can be described from three facets: first, improving location query by discovering and extracting address information from the Web to extend geocoding database. Second, enhancing the ability of optimum path query of public traffic and buffer query by spatial analyzing and reasoning on the extended geocoding database. Third, adjusting strategies of collecting data according to patterns discovered by web map query mining. Finally, this paper presents the designing of the application system and experimental results.

  13. Change management for semantic web services

    CERN Document Server

    Liu, Xumin; Bouguettaya, Athman

    2011-01-01

    Change Management for Semantic Web Services provides a thorough analysis of change management in the lifecycle of services for databases and workflows, including changes that occur at the individual service level or at the aggregate composed service level. This book describes taxonomy of changes that are expected in semantic service oriented environments. The process of change management consists of detecting, propagating, and reacting to changes. Change Management for Semantic Web Services is one of the first books that discuss the development of a theoretical foundation for managing changes

  14. Java Web Services up and running

    CERN Document Server

    Kalin, Martin

    2009-01-01

    This quick, practical, and thorough introduction to Java web services -- the JAX-WS and JAX-RS APIs -- offers a mix of architectural overview, complete working code examples, and short yet precise instructions for compiling, deploying, and executing a sample application. You'll not only learn how to write web services from scratch, but also how to integrate existing services into your Java applications.

  15. Transimulation - protein biosynthesis web service.

    Directory of Open Access Journals (Sweden)

    Marlena Siwiak

    Full Text Available Although translation is the key step during gene expression, it remains poorly characterized at the level of individual genes. For this reason, we developed Transimulation - a web service measuring translational activity of genes in three model organisms: Escherichia coli, Saccharomyces cerevisiae and Homo sapiens. The calculations are based on our previous computational model of translation and experimental data sets. Transimulation quantifies mean translation initiation and elongation time (expressed in SI units, and the number of proteins produced per transcript. It also approximates the number of ribosomes that typically occupy a transcript during translation, and simulates their propagation. The simulation of ribosomes' movement is interactive and allows modifying the coding sequence on the fly. It also enables uploading any coding sequence and simulating its translation in one of three model organisms. In such a case, ribosomes propagate according to mean codon elongation times of the host organism, which may prove useful for heterologous expression. Transimulation was used to examine evolutionary conservation of translational parameters of orthologous genes. Transimulation may be accessed at http://nexus.ibb.waw.pl/Transimulation (requires Java version 1.7 or higher. Its manual and source code, distributed under the GPL-2.0 license, is freely available at the website.

  16. Transimulation - protein biosynthesis web service.

    Science.gov (United States)

    Siwiak, Marlena; Zielenkiewicz, Piotr

    2013-01-01

    Although translation is the key step during gene expression, it remains poorly characterized at the level of individual genes. For this reason, we developed Transimulation - a web service measuring translational activity of genes in three model organisms: Escherichia coli, Saccharomyces cerevisiae and Homo sapiens. The calculations are based on our previous computational model of translation and experimental data sets. Transimulation quantifies mean translation initiation and elongation time (expressed in SI units), and the number of proteins produced per transcript. It also approximates the number of ribosomes that typically occupy a transcript during translation, and simulates their propagation. The simulation of ribosomes' movement is interactive and allows modifying the coding sequence on the fly. It also enables uploading any coding sequence and simulating its translation in one of three model organisms. In such a case, ribosomes propagate according to mean codon elongation times of the host organism, which may prove useful for heterologous expression. Transimulation was used to examine evolutionary conservation of translational parameters of orthologous genes. Transimulation may be accessed at http://nexus.ibb.waw.pl/Transimulation (requires Java version 1.7 or higher). Its manual and source code, distributed under the GPL-2.0 license, is freely available at the website.

  17. Consuming Web Services on Mobile Platforms

    Directory of Open Access Journals (Sweden)

    Alin COBARZAN

    2010-01-01

    Full Text Available Web services are an emerging technology that provides interoperability between applications running in different platforms. The Web services technology provide the best approach to Service Oriented Architecture envision of component collaboration for better business re-quirements fulfilment in large enterprise systems. The challenges in implementing Web services consuming clients for low-resources mobile devices connected through unreliable wireless connections are delimited. The paper also presents a communication architecture that moves the heavy load of XML-based messaging system from the mobile clients to an external middleware component. The middleware component will act like a gateway that lightly com-municates with the device in a client-server manner over a fast binary protocol and at the same time takes the responsibility of solving the request to the Web service.

  18. Web based aphasia test using service oriented architecture (SOA)

    Energy Technology Data Exchange (ETDEWEB)

    Voos, J A [Clinical Engineering R and D Center, Universidad Tecnologica Nacional, Facultad Regional Cordoba, Cordoba (Argentina); Vigliecca, N S [Consejo Nacional de Investigaciones Cientificas y Tecnicas, CONICET, Cordoba (Argentina); Gonzalez, E A [Clinical Engineering R and D Center, Universidad Tecnologica Nacional, Facultad Regional Cordoba, Cordoba (Argentina)

    2007-11-15

    Based on an aphasia test for Spanish speakers which analyze the patient's basic resources of verbal communication, a web-enabled software was developed to automate its execution. A clinical database was designed as a complement, in order to evaluate the antecedents (risk factors, pharmacological and medical backgrounds, neurological or psychiatric symptoms, brain injury -anatomical and physiological characteristics, etc) which are necessary to carry out a multi-factor statistical analysis in different samples of patients. The automated test was developed following service oriented architecture and implemented in a web site which contains a tests suite, which would allow both integrating the aphasia test with other neuropsychological instruments and increasing the available site information for scientific research. The test design, the database and the study of its psychometric properties (validity, reliability and objectivity) were made in conjunction with neuropsychological researchers, who participate actively in the software design, based on the patients or other subjects of investigation feedback.

  19. Parmodel: a web server for automated comparative modeling of proteins.

    Science.gov (United States)

    Uchôa, Hugo Brandão; Jorge, Guilherme Eberhart; Freitas Da Silveira, Nelson José; Camera, João Carlos; Canduri, Fernanda; De Azevedo, Walter Filgueira

    2004-12-24

    Parmodel is a web server for automated comparative modeling and evaluation of protein structures. The aim of this tool is to help inexperienced users to perform modeling, assessment, visualization, and optimization of protein models as well as crystallographers to evaluate structures solved experimentally. It is subdivided in four modules: Parmodel Modeling, Parmodel Assessment, Parmodel Visualization, and Parmodel Optimization. The main module is the Parmodel Modeling that allows the building of several models for a same protein in a reduced time, through the distribution of modeling processes on a Beowulf cluster. Parmodel automates and integrates the main softwares used in comparative modeling as MODELLER, Whatcheck, Procheck, Raster3D, Molscript, and Gromacs. This web server is freely accessible at .

  20. A Web Service Implementation for Large-Scale Automation, Visualization, and Real-Time Program-Awareness Via Lexical Link Analysis

    Science.gov (United States)

    2011-09-27

    of Distributed Information and Systems Experimentation ( DISE ). Dr. Gallup has a multidisciplinary science, engineering, and analysis background...Experimentation ( DISE ) research group where he leads multi-disciplinary studies ranging from Maritime Domain Awareness (MDA) to Knowledge Management (KM) and...service is shown, hosted via http://disedev4.ern.nps.edu:8080/ARP, which is a dedicated server for this project at the NPS DISE lab. Eventually, we

  1. Ananalysis on Runtime Associated QOS-Based Proficient Web Services Discovery Optimization

    Directory of Open Access Journals (Sweden)

    A. Amirthasaravanan

    Full Text Available ABSTRACT In today's web world, Service-oriented architectures represent the main standard for IT infrastructures. Certainly, with the initiation of service oriented architecture, Web services have gained incredible growth. Web service discovery has become increasingly more significant as the existing use of web service. Discovering most appropriate web service from vast collection of web services is very decisive for successful execution of applications. In automation of web service discovery, there is always a need to deem Quality of Service (QoS attributes during matching. A study of literature concerning the evolution of different web service discovery optimization methods with unique prominence to quality motivated service discovery have been carried out in this work. This paper depicts Bio-inspired algorithms optimizing the discovery process for semantic web services. Bio-inspired algorithm is a metaheuristics method that mimics the nature in order to unravel optimization difficulty and evaluates the analysis of some popular bio-inspired optimization algorithm systematically. This paper also focused on the principle of each algorithm and their application with respect to run time oriented QoSattributes and from result the best suitable bio-inspired optimization algorithm is been deployed.

  2. Region 9 2010 Census Web Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — This web service displays data collected during the 2010 U.S. Census. The data are organized into layers representing Tract, Block, and Block Group visualizations....

  3. Mandatory Class 1 Federal Areas Web Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — This web service contains the following layers: Mandatory Class 1 Federal Area polygons and Mandatory Class 1 Federal Area labels in the United States. The polygon...

  4. Domain-specific Web Service Discovery with Service Class Descriptions

    Energy Technology Data Exchange (ETDEWEB)

    Rocco, D; Caverlee, J; Liu, L; Critchlow, T J

    2005-02-14

    This paper presents DynaBot, a domain-specific web service discovery system. The core idea of the DynaBot service discovery system is to use domain-specific service class descriptions powered by an intelligent Deep Web crawler. In contrast to current registry-based service discovery systems--like the several available UDDI registries--DynaBot promotes focused crawling of the Deep Web of services and discovers candidate services that are relevant to the domain of interest. It uses intelligent filtering algorithms to match services found by focused crawling with the domain-specific service class descriptions. We demonstrate the capability of DynaBot through the BLAST service discovery scenario and describe our initial experience with DynaBot.

  5. 解读Web Service

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    目前,对Web Service的介绍一股都说得不够明白,没有人能说明Web Service到底是什么。从表面上看,Web Service就是一个应用程序,它向外界暴露出一个能够通过Web进行调用的API。这就是说,你能够用编程的方法通过Web来调用这个应用程序。

  6. Acquiring Evolving Technologies: Web Services Standards

    Science.gov (United States)

    2016-06-30

    2006 Carnegie Mellon University Acquiring Evolving Technologies: Web Services Standards Harry L. Levinson Software Engineering Institute Carnegie...Acquiring Evolving Technologies: Web Services Standards 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT...NUMBER OF PAGES 22 19a. NAME OF RESPONSIBLE PERSON a. REPORT unclassified b. ABSTRACT unclassified c. THIS PAGE unclassified Standard Form

  7. Web services interface to EPICS channel access

    Institute of Scientific and Technical Information of China (English)

    DUAN Lei; SHEN Liren

    2008-01-01

    Web services is used in Experimental Physics and Industrial Control System (EPICS). Combined with EPICS Channel Access protocol, Web services' high usability, platform independence and language independence can be used to design a fully transparent and uniform software interface layer, which helps us complete channel data acquisition, modification and monitoring functions. This software interface layer, a cross-platform of cross-language,has good interopcrability and reusability.

  8. A Semantic Matchmaker for Ranking Web Services

    Institute of Scientific and Technical Information of China (English)

    Bin Xu; Po Zhang; Juan-Zi Li; Wen-Jun Yang

    2006-01-01

    This paper is concerned with the matchmaker for ranking web services by using semantics. So far several methods of semantic matchmaker have been proposed. Most of them, however, focus on classifying the services into predefined categories rather than providing a ranking result. In this paper, a new method of semantic matchmaker is proposed for ranking web services. It is proposed to use the semantic distance for estimating the matching degree between a service and a user request. Four types of semantic distances are defined and four algorithms are implemented respectively to calculate them. Experimental results show that the proposed semantic matchmaker significantly outperforms the keywordbased baseline method.

  9. Transactions Concurrency Control in Web Service Environment

    DEFF Research Database (Denmark)

    Alrifai, Mohammad; Dolog, Peter; Nejdl, Wolfgang

    2006-01-01

    on transaction dependency graphs maintained at the service provider side. We have implemented such a protocol on top of WS-Transaction. The extension on the web service provider side is simple to achieve as it can be an integral part of the service invocation mechanism. It has also an advantage from...... an engineering point of view as it does not change the way consumers or clients of web services have to be programmed. Furthermore, it avoids direct communication between transaction coordinators which preserves security by keeping the information about business transactions restricted to the coordinators which......Business transactions in web service environments run with relaxed isolation and atomicity property. In such environments, transactions can commit and roll back independently on each other. Transaction management has to reflect this issue and address the problems which result for example from...

  10. Using ESO Reflex with Web Services

    Science.gov (United States)

    Järveläinen, P.; Savolainen, V.; Oittinen, T.; Maisala, S.; Ullgrén, M. Hook, R.

    2008-08-01

    ESO Reflex is a prototype graphical workflow system, based on Taverna, and primarily intended to be a flexible way of running ESO data reduction recipes along with other legacy applications and user-written tools. ESO Reflex can also readily use the Taverna Web Services features that are based on the Apache Axis SOAP implementation. Taverna is a general purpose Web Service client, and requires no programming to use such services. However, Taverna also has some restrictions: for example, no numerical types such integers. In addition the preferred binding style is document/literal wrapped, but most astronomical services publish the Axis default WSDL using RPC/encoded style. Despite these minor limitations we have created simple but very promising test VO workflow using the Sesame name resolver service at CDS Strasbourg, the Hubble SIAP server at the Multi-Mission Archive at Space Telescope (MAST) and the WESIX image cataloging and catalogue cross-referencing service at the University of Pittsburgh. ESO Reflex can also pass files and URIs via the PLASTIC protocol to visualisation tools and has its own viewer for VOTables. We picked these three Web Services to try to set up a realistic and useful ESO Reflex workflow. They also demonstrate ESO Reflex abilities to use many kind of Web Services because each of them requires a different interface. We describe each of these services in turn and comment on how it was used

  11. Certified Web Services in Ynot

    OpenAIRE

    Wisnesky, Ryan; Malecha, Gregory Michael; Morrisett, John Gregory

    2010-01-01

    In this paper we demonstrate that it is possible to implement certi ed web systems in a way not much di erent from writing Standard ML or Haskell code, including use of imperative features like pointers, les, and socket I/O. We present a web-based course gradebook application developed with Ynot, a Coq library for certi ed imperative programming.We add a dialog-based I/O system to Ynot, and we extend Ynot's underlying Hoare logic with event traces to reason about I/O be- havior. Expressiv...

  12. Bridging the gap between legacy services and Web Services

    DEFF Research Database (Denmark)

    Bissyandé, Tegawendé; Réveillère, Laurent; Bromberg, Yérom-David

    2010-01-01

    . A promising solution is to implement wrappers to translate between the application layer protocols and the WS protocol. Doing so manually, however, requires a high level of expertise, in the relevant application layer protocols, in low-level network and system programming, and in the Web Service paradigm......Web Services is an increasingly used instantiation of Service-Oriented Architectures (SOA) that relies on standard Internet protocols to produce services that are highly interoperable. Other types of services, relying on legacy application layer protocols, however, cannot be composed directly...... itself. In this paper, we introduce a generative language based approach for constructing wrappers to facilitate the migration of legacy service functionalities to Web Services. To this end, we have designed the Janus domain-specific language, which provides developers with a high-level way to describe...

  13. Sketching web services backends with SERPE

    NARCIS (Netherlands)

    Aprile, W.A.

    2009-01-01

    In the face of current strong commercial interest in services that, from an implementation point of view, consist of databases provided with a web API and/or a front end, there is a scarcity of tools that allow quickly sketching the service backend in order to deliver an interactive prototype. SERPE

  14. Web Service Architecture Framework for Embedded Devices

    Science.gov (United States)

    Yanzick, Paul David

    2009-01-01

    The use of Service Oriented Architectures, namely web services, has become a widely adopted method for transfer of data between systems across the Internet as well as the Enterprise. Adopting a similar approach to embedded devices is also starting to emerge as personal devices and sensor networks are becoming more common in the industry. This…

  15. A Strategic Model of Trust Management in Web Services

    Science.gov (United States)

    Sun, Junqing; Sun, Zhaohao; Li, Yuanzhe; Zhao, Shuliang

    This article examines trust and trust management in web services and proposes a multiagent model of trust relationship in web services. It looks at the hierarchical structure of trust management in web services and proposes a strategic model of trust management in web services. The proposed approach in this article will facilitate research and development of trust management in e-commerce, web services and social networking.

  16. Opal web services for biomedical applications.

    Science.gov (United States)

    Ren, Jingyuan; Williams, Nadya; Clementi, Luca; Krishnan, Sriram; Li, Wilfred W

    2010-07-01

    Biomedical applications have become increasingly complex, and they often require large-scale high-performance computing resources with a large number of processors and memory. The complexity of application deployment and the advances in cluster, grid and cloud computing require new modes of support for biomedical research. Scientific Software as a Service (sSaaS) enables scalable and transparent access to biomedical applications through simple standards-based Web interfaces. Towards this end, we built a production web server (http://ws.nbcr.net) in August 2007 to support the bioinformatics application called MEME. The server has grown since to include docking analysis with AutoDock and AutoDock Vina, electrostatic calculations using PDB2PQR and APBS, and off-target analysis using SMAP. All the applications on the servers are powered by Opal, a toolkit that allows users to wrap scientific applications easily as web services without any modification to the scientific codes, by writing simple XML configuration files. Opal allows both web forms-based access and programmatic access of all our applications. The Opal toolkit currently supports SOAP-based Web service access to a number of popular applications from the National Biomedical Computation Resource (NBCR) and affiliated collaborative and service projects. In addition, Opal's programmatic access capability allows our applications to be accessed through many workflow tools, including Vision, Kepler, Nimrod/K and VisTrails. From mid-August 2007 to the end of 2009, we have successfully executed 239,814 jobs. The number of successfully executed jobs more than doubled from 205 to 411 per day between 2008 and 2009. The Opal-enabled service model is useful for a wide range of applications. It provides for interoperation with other applications with Web Service interfaces, and allows application developers to focus on the scientific tool and workflow development. Web server availability: http://ws.nbcr.net.

  17. WEB SERVICE BASED RELIABLE - SHELTERED MEDI HELPER

    Directory of Open Access Journals (Sweden)

    L.Priya

    2011-01-01

    Full Text Available The veracity and secrecy of medical information which is transacted over the Internet is vulnerable to attack. But the transaction of such details is mandatory in order to avail the luxury of medical services anywhere, anytime. Especially in a web service enabled system for hospital management, it becomes necessary to address these security issues. It is mandatory that the services guarantee message delivery to software applications, with a chosen level of quality of service (QoS. This paper presents a VDM++ based specification for modelling a security framework for web services with non repudiation to ensure that a party in a dispute cannot repudiate, or refute the validity of a statement or contract and it is ensured that the transaction happens in a reliable manner. This model presents the procedure and technical options to have a secure communication over Internet with web services. Based on the model the Medi - Helper is developed to use the technologies of WS-Security, WS-Reliability and WS-Policy, WSRN in order to create encrypted messages so that the Patient’s medical records are not tampered with when relayed over Internet, and are sent in a reliable manner. In addition to authentication, integrity, confidentiality, as proposed in this paper security framework for healthcare based web services is equipped with non repudiation which is not inclusive in many existing frameworks.

  18. Fractal Adaptive Web Service for Mobile Learning

    Directory of Open Access Journals (Sweden)

    Ichraf Tirellil

    2006-06-01

    Full Text Available This paper describes our proposition for adaptive web services which is based on configurable, re-usable adaptive/personalized services. To realize our ideas, we have developed an approach for designing, implementing and maintaining personal service. This approach enables the user to accomplish an activity with a set of services answering to his preferences, his profiles and to a personalized context. In this paper, we describe the principle of our approach that we call fractal adaptation approach, and we discuss the implementation of personalization services in the context of mobile and collaborative scenario of learning. We have realized a platform in this context -a platform for mobile and collaborative learning- based on fractal adaptable web services. The platform is tested with a population of students and tutors, in order to release the gaps and the advantages of the approach suggested.

  19. Sketching web services backends with SERPE

    OpenAIRE

    Aprile, W.A.

    2009-01-01

    In the face of current strong commercial interest in services that, from an implementation point of view, consist of databases provided with a web API and/or a front end, there is a scarcity of tools that allow quickly sketching the service backend in order to deliver an interactive prototype. SERPE consists of an online Python programming environment that hides the complexities of the MVC model, databases, objects and object relational mapping and builds on Google's services, letting the ser...

  20. Optimizing Decisions in Web Services Orchestrations

    OpenAIRE

    Kattepur, Ajay; Benveniste, Albert; Jard, Claude

    2011-01-01

    International audience; Web services orchestrations conventionally employ exhaustive comparison of runtime quality of service (QoS) metrics for decision making. The ability to incorporate more complex mathematical packages are needed, especially in case of workflows for resource allocation and queuing systems. By modeling such optimization routines as service calls within orchestration specifications, techniques such as linear programming can be conveniently invoked by non-specialist workflow...

  1. Grid Enabled Geospatial Catalogue Web Service

    Science.gov (United States)

    Chen, Ai-Jun; Di, Li-Ping; Wei, Ya-Xing; Liu, Yang; Bui, Yu-Qi; Hu, Chau-Min; Mehrotra, Piyush

    2004-01-01

    Geospatial Catalogue Web Service is a vital service for sharing and interoperating volumes of distributed heterogeneous geospatial resources, such as data, services, applications, and their replicas over the web. Based on the Grid technology and the Open Geospatial Consortium (0GC) s Catalogue Service - Web Information Model, this paper proposes a new information model for Geospatial Catalogue Web Service, named as GCWS which can securely provides Grid-based publishing, managing and querying geospatial data and services, and the transparent access to the replica data and related services under the Grid environment. This information model integrates the information model of the Grid Replica Location Service (RLS)/Monitoring & Discovery Service (MDS) with the information model of OGC Catalogue Service (CSW), and refers to the geospatial data metadata standards from IS0 19115, FGDC and NASA EOS Core System and service metadata standards from IS0 191 19 to extend itself for expressing geospatial resources. Using GCWS, any valid geospatial user, who belongs to an authorized Virtual Organization (VO), can securely publish and manage geospatial resources, especially query on-demand data in the virtual community and get back it through the data-related services which provide functions such as subsetting, reformatting, reprojection etc. This work facilitates the geospatial resources sharing and interoperating under the Grid environment, and implements geospatial resources Grid enabled and Grid technologies geospatial enabled. It 2!so makes researcher to focus on science, 2nd not cn issues with computing ability, data locztic, processir,g and management. GCWS also is a key component for workflow-based virtual geospatial data producing.

  2. Web Services modeling and composition approach using Objects-Oriented Petri Nets

    Directory of Open Access Journals (Sweden)

    Sofiane Chemaa

    2012-07-01

    Full Text Available Nowadays, with the emergence and the evolution of new technologies, such as e-business, a large number of companies are connected to Internet, and have proposed web services to trade. Web services as presented, are conceptually limited components to relatively simple functionalities. Generally, a single service does not satisfy the users needs that are more and more complex. Therefore, services must be made able to be composed to offer added value services. In this paper, a web services composition approach, modelled by Objects-Oriented Petri nets, is presented. In his context, an expressive algebra, which successfully solves the web services complex composition problem, is proposed. A java tool that allows automating this approach; based on a definite algebra and a G-nets meta-model, proposed by us, is developed.

  3. Study on Web Services Security Mechanism%Web Services 安全机制研究

    Institute of Scientific and Technical Information of China (English)

    张锋军; 李勇; 牟其林

    2014-01-01

    Web services, as a mainstream technical standard for SOA implementation, has now been ap-plied extensively, and its security is worthy of high attention. This paper studies the security mechanism of Web services based-on the WS-security standards, analyses the standards it follows, and describes the function of security services. It gives an applicable Web services protection solution from the aspects of i-dentification, SOAP message security and access control based on engineer practice. This solution can im-plement the core security protection functions of Web services, and has directive significance for Web serv-ices-based SOA system's security protection.%Web Services 作为实现 SOA 的主流技术标准,得到了广泛应用,其安全性值得高度关注。基于 WS-Security 标准,对 Web Services 的安全机制进行了研究,对 Web Services 安全防护的功能、遵循的标准进行了分析,并结合工程实践,从身份识别、SOAP 消息安全防护和访问控制等方面提出了Web Services 安全防护的实现方案,可以实现核心的安全防护功能,对基于 Web Services 技术架构的系统安全防护具有指导意义。

  4. EvolvingWeb-Based Test Automation into Agile Business Specifications

    Directory of Open Access Journals (Sweden)

    David Streader

    2011-06-01

    Full Text Available Usually, test automation scripts for a web application directly mirror the actions that the tester carries out in the browser, but they tend to be verbose and repetitive, making them expensive to maintain and ineffective in an agile setting. Our research has focussed on providing tool-support for business-level, example-based specifications that are mapped to the browser level for automatic verification. We provide refactoring support for the evolution of existing browser-level tests into business-level specifications. As resulting business rule tables may be incomplete, redundant or contradictory, our tool provides feedback on coverage.

  5. SOAP based web services and their future role in VO projects

    Science.gov (United States)

    Topf, F.; Jacquey, C.; Génot, V.; Cecconi, B.; André, N.; Zhang, T. L.; Kallio, E.; Lammer, H.; Facsko, G.; Stöckler, R.; Khodachenko, M.

    2011-10-01

    Modern state-of-the-art web services are from crucial importance for the interoperability of different VO tools existing in the planetary community. SOAP based web services assure the interconnectability between different data sources and tools by providing a common protocol for communication. This paper will point out a best practice approach with the Automated Multi-Dataset Analysis Tool (AMDA) developed by CDPP, Toulouse and the provision of VEX/MAG data from a remote database located at IWF, Graz. Furthermore a new FP7 project IMPEx will be introduced with a potential usage example of AMDA web services in conjunction with simulation models.

  6. An effective assemble-oriented framework for grid Web service

    Institute of Scientific and Technical Information of China (English)

    CHEN Zhang; CHEN Zhi-gang; DENG Xiao-heng; CHEN Li-xin

    2007-01-01

    An effective assemble-oriented framework for grid Web service based on open grid service architecture was proposed, in which Web service semantics network constructed by software reuse was designed to enhance the locating of assemble-oriented service resources. The successful Web services assembled structure was exploited to design semantics network, the logical and the physical structure of the resource was separated in Web service, and the logical resource derived from type ID of Web service was combined. Experiment results show that the success ratio of Web service request comes to 100% while providing completely assembly semantics set. This model provides guarantee of the reliability of assemble Web service and establishes the foundation of web service automatic interaction, customizing application service and dynamic service configuration.

  7. Web Service Interface for Data Collection

    Directory of Open Access Journals (Sweden)

    Ruchika

    2012-05-01

    Full Text Available Data collection is a key component of an information system. The widespread penetration of ICT tools in organizations and institutions has resulted in a shift in the way the data is collected. Data may be collected in printed-form, by e-mails, on a compact disk, or, by direct upload on the management information system. Since web services are platform-independent, it can access data stored in the XML format from any platform. In this paper, we present an interface which uses web services for data collection. It requires interaction between a web service deployed for the purposes of data collection, and the web address where the data is stored. Our interface requires that the web service has pre-knowledge of the address from where the data is to be collected. Also, the data to be accessed must be stored in XML format. Since our interface uses computer-supported interaction on both sides, it eases the task of regular and ongoing data collection. We apply our framework to the Education Management Information System, which collects data from schools spread across the country.

  8. RECOMMENDATION FOR WEB SERVICE COMPOSITION BY MINING USAGE LOGS

    Directory of Open Access Journals (Sweden)

    Vivek R

    2016-03-01

    Full Text Available Web service composition has been one of the most researched topics of the past decade. Novel methods of web service composition are being proposed in the literature include Semantics-based composition, WSDLbased composition. Although these methods provide promising results for composition, search and discovery of web service based on QoS parameter of network and semantics or ontology associated with WSDL, they do not address composition based on usage of web service. Web Service usage logs capture time series data of web service invocation by business objects, which innately captures patterns or workflows associated with business operations. Web service composition based on such patterns and workflows can greatly streamline the business operations. In this research work, we try to explore and implement methods of mining web service usage logs. Main objectives include Identifying usage association of services. Linking one service invocation with other, Evaluation of the causal relationship between associations of services.

  9. Evolution of web services in bioinformatics.

    Science.gov (United States)

    Neerincx, Pieter B T; Leunissen, Jack A M

    2005-06-01

    Bioinformaticians have developed large collections of tools to make sense of the rapidly growing pool of molecular biological data. Biological systems tend to be complex and in order to understand them, it is often necessary to link many data sets and use more than one tool. Therefore, bioinformaticians have experimented with several strategies to try to integrate data sets and tools. Owing to the lack of standards for data sets and the interfaces of the tools this is not a trivial task. Over the past few years building services with web-based interfaces has become a popular way of sharing the data and tools that have resulted from many bioinformatics projects. This paper discusses the interoperability problem and how web services are being used to try to solve it, resulting in the evolution of tools with web interfaces from HTML/web form-based tools not suited for automatic workflow generation to a dynamic network of XML-based web services that can easily be used to create pipelines.

  10. QOS Aware Formalized Model for Semantic Web Service Selection

    Directory of Open Access Journals (Sweden)

    Divya Sachan

    2014-10-01

    Full Text Available Selecting the most relevant Web Service according to a client requirement is an onerous task, as innumerous number of functionally same Web Services(WS are listed in UDDI registry. WS are functionally same but their Quality and performance varies as per service providers. A web Service Selection Process involves two major points: Recommending the pertinent Web Service and avoiding unjustifiable web service. The deficiency in keyword based searching is that it doesn’t handle the client request accurately as keyword may have ambiguous meaning on different scenarios. UDDI and search engines all are based on keyword search, which are lagging behind on pertinent Web service selection. So the search mechanism must be incorporated with the Semantic behavior of Web Services. In order to strengthen this approach, the proposed model is incorporated with Quality of Services (QoS based Ranking of semantic web services.

  11. Smart: Semantically Mashup Rest Web Services

    Directory of Open Access Journals (Sweden)

    Rima Kilany

    2013-10-01

    Full Text Available A mashup is a combination of information from more than one source, mixed up in a way to create something new, or at least useful. Anyone can find mashups on the internet, but these are always specifically designed for a predefined purpose. To change that fact, we implemented a new platform we called the SMART platform. SMART enables the user to make his own choices as for the REST web services he needs to call in order to build an intelligent personalized mashup, from a Google-like simple search interface, without needing any programming skills. In order to achieve this goal, we defined an ontology that can hold REST web services descriptions. These descriptions encapsulate mainly, the input type needed for a service, its output type, and the kind of relation that ties the input to the output. Then, by matching the user input query keywords, with the REST web services definitions in our ontology, we can find registered services individuals in this ontology, and construct the raw REST query for each service found. The wrap up from the keywords, into semantic definitions, in order to find the matching service individual, then the wrap down from the semantic service description of the found individual, to the raw REST call, and finally the wrap up of the result again into semantic individuals, is done for two main purposes: the first to let the user use simple keywords in order to build complex mashups, and the second to benefit from the ontology’s inference engine in a way, where services instances can be tied together into an intelligent mashup, simply by making each service output individuals, stand as the next service input.

  12. CMR Catalog Service for the Web

    Science.gov (United States)

    Newman, Doug; Mitchell, Andrew

    2016-01-01

    With the impending retirement of Global Change Master Directory (GCMD) Application Programming Interfaces (APIs) the Common Metadata Repository (CMR) was charged with providing a collection-level Catalog Service for the Web (CSW) that provided the same level of functionality as GCMD. This talk describes the capabilities of the CMR CSW API with particular reference to the support of the Committee on Earth Observation Satellites (CEOS) Working Group on Information Systems and Services (WGISS) Integrated Catalog (CWIC).

  13. Towards Web Service-Based Educational Systems

    Science.gov (United States)

    Sampson, Demetrios G.

    2005-01-01

    The need for designing the next generation of web service-based educational systems with the ability of integrating components from different tools and platforms is now recognised as the major challenge in advanced learning technologies. In this paper, we discuss this issue and we present the conceptual design of such environment, referred to as…

  14. Web Service for Positional Quality Assessment: the Wps Tier

    Science.gov (United States)

    Xavier, E. M. A.; Ariza-López, F. J.; Ureña-Cámara, M. A.

    2015-08-01

    In the field of spatial data every day we have more and more information available, but we still have little or very little information about the quality of spatial data. We consider that the automation of the spatial data quality assessment is a true need for the geomatic sector, and that automation is possible by means of web processing services (WPS), and the application of specific assessment procedures. In this paper we propose and develop a WPS tier centered on the automation of the positional quality assessment. An experiment using the NSSDA positional accuracy method is presented. The experiment involves the uploading by the client of two datasets (reference and evaluation data). The processing is to determine homologous pairs of points (by distance) and calculate the value of positional accuracy under the NSSDA standard. The process generates a small report that is sent to the client. From our experiment, we reached some conclusions on the advantages and disadvantages of WPSs when applied to the automation of spatial data accuracy assessments.

  15. If this then that: an introduction to automated task services.

    Science.gov (United States)

    Hoy, Matthew B

    2015-01-01

    This article explores automated task services, a type of website that allows users to create rules that are triggered by activity on one website and perform a task on another site. The most well-known automated task service is If This Then That (IFTTT), but recently a large number of these services have sprung up. These services can be used to connect websites, apps, business services, and even devices such as phones and home automation equipment. This allows for millions of possible combinations of rules, triggers, and actions. Librarians can put these services to use in many ways, from automating social media postings to remembering to bring their umbrella when rain is in the forecast. A list of popular automated task services is included, as well as a number of ideas for using these services in libraries.

  16. Web Services at the National Oceanic and Atmospheric Administration (NOAA) National Climatic Data Center (NCDC)

    Science.gov (United States)

    Ansari, S.; Baldwin, R.; Del Greco, S.; Lott, N.; Rutledge, G.

    2007-12-01

    NOAA's National Climatic Data Center (NCDC) currently archives over 1.5 petabytes of climatological data from various networks and sources including in-situ, numerical models, radar and satellite. Access to these datasets is evolving from interactive web interfaces utilizing database technology to standardized web services in a Service Oriented Architecture (SOA). NCDC is currently offering several web services using Simple Object Access Protocol (SOAP), XML over Representational State Transfer (REST/XML), Open Geospatial Consortium (OGC) Web Map Service (WMS) / Web Feature Service (WFS) / Web Coverage Service (WCS) and OPeNDAP web service protocols. These services offer users a direct connection between their client applications and NCDC data servers. In addition, users may embed access to the services in custom applications to efficiently navigate and subset data in an automated fashion. NCDC currently provides gridded numerical model data through a THREDDS Data Server and GrADS Data Server which offers OPeNDAP and WCS access. In-situ network metadata are available through WMS and WFS while the corresponding time-series data are accessible through SOAP and REST web services. These in-situ services are a part of the Consortium of Universities for the Advancement of Hydrologic Science (CUAHSI) WaterOneFlow services, a consolidated access system for hydrologic data, and comply with the WaterOneFlow specifications. NCDC's Severe Weather Data Inventory (SWDI), which provides user access to archives of several datasets critical to the detection and evaluation of severe weather, is also accessible through REST/XML services. Providing cataloging, access and search capabilities for many of NCDC's datasets using community driven standards is a top priority for the ever increasing data volumes being archived at NCDC. Providing interoperable access is critical to supporting data stewardship across multiple scientific disciplines and user types. This demonstration will

  17. Engineering Compensations in Web Service Environment

    DEFF Research Database (Denmark)

    Schäfer, Micahel; Dolog, Peter; Nejdl, Wolfgang

    2007-01-01

    Business to business integration has recently been performed by employing Web service environments. Moreover, such environments are being provided by major players on the technology markets. Those environments are based on open specifications for transaction coordination. When a failure...... compensations based on forward recovery principles. We extend the existing Web service transaction coordination architecture and infrastructure in order to support flexible compensation operations. A contract-based approach is being used, which allows the specification of permitted compensations at runtime. We...... introduce the abstract service and adapter components which allow us to separate the compensation logic from the coordination logic. In this way, we can easily plug in or plug out different compensation strategies based on a specification language defined on top of basic compensation activities and complex...

  18. Focused Crawling of the Deep Web Using Service Class Descriptions

    Energy Technology Data Exchange (ETDEWEB)

    Rocco, D; Liu, L; Critchlow, T

    2004-06-21

    Dynamic Web data sources--sometimes known collectively as the Deep Web--increase the utility of the Web by providing intuitive access to data repositories anywhere that Web access is available. Deep Web services provide access to real-time information, like entertainment event listings, or present a Web interface to large databases or other data repositories. Recent studies suggest that the size and growth rate of the dynamic Web greatly exceed that of the static Web, yet dynamic content is often ignored by existing search engine indexers owing to the technical challenges that arise when attempting to search the Deep Web. To address these challenges, we present DynaBot, a service-centric crawler for discovering and clustering Deep Web sources offering dynamic content. DynaBot has three unique characteristics. First, DynaBot utilizes a service class model of the Web implemented through the construction of service class descriptions (SCDs). Second, DynaBot employs a modular, self-tuning system architecture for focused crawling of the DeepWeb using service class descriptions. Third, DynaBot incorporates methods and algorithms for efficient probing of the Deep Web and for discovering and clustering Deep Web sources and services through SCD-based service matching analysis. Our experimental results demonstrate the effectiveness of the service class discovery, probing, and matching algorithms and suggest techniques for efficiently managing service discovery in the face of the immense scale of the Deep Web.

  19. A Service Design Oriented Web Services Composite Platform

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    In order to realize flexible, adaptable, extensible, efficient, and user-friendly service composition, we propose a service design oriented Web Service composite platform (SDOWSCP) and a service composition mechanism called composed-service-requestor-oriented service composition (OBSDOSC). SDOWSCP imports ontology into UDDI to define and annotate services in a flexible and intuitive manner and employs a concept of bond as a solution to the process heterogeneity. OBSDOSC is proposed in order to do some efforts to overcome some defects which current design tools usually have such as not user-friendly and too professional. This paper proposes a pattern which describes the basic features of semi-automatic composite mode, discusses the whole lifetime of composed service and highlights how to lessen the descriptive heterogeneity and process heterogeneity and how to facilitate the design of composing a service.

  20. EnviroAtlas Community Block Group Metrics Web Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This web service includes...

  1. EnviroAtlas National Layers Master Web Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This web service includes...

  2. QOS BASED SELECTION AND COMPOSITION OF WEB SERVICES-A FUZZY APPROACH

    Directory of Open Access Journals (Sweden)

    N. Hema Priya

    2014-01-01

    Full Text Available Web Services are emerging technologies which satisfy users’ requests on the Web. Selecting appropriate services to suit the needs is a huge task. There are a huge number of service providers who offer same type of service, with differences in functional and non functional qualities. A few users may need multiple services at the same moment. So composition of services also becomes important. Moreover the consumers get confused in selecting apt services, which leads to the necessity of an automated service selection mechanism based on QoS metrics. It is tedious to find the service with the composite of QoS parameters along with the consumer vague perception. We take these constraints into account and implement a fuzzy rule based algorithm for selection and composition. The open source environment is preferred for a number of reasons. The simulation results show that this setup works well in Service oriented environments.

  3. A Web Services Data Analysis Grid

    Energy Technology Data Exchange (ETDEWEB)

    William A Watson III; Ian Bird; Jie Chen; Bryan Hess; Andy Kowalski; Ying Chen

    2002-07-01

    The trend in large-scale scientific data analysis is to exploit compute, storage and other resources located at multiple sites, and to make those resources accessible to the scientist as if they were a single, coherent system. Web technologies driven by the huge and rapidly growing electronic commerce industry provide valuable components to speed the deployment of such sophisticated systems. Jefferson Lab, where several hundred terabytes of experimental data are acquired each year, is in the process of developing a web-based distributed system for data analysis and management. The essential aspects of this system are a distributed data grid (site independent access to experiment, simulation and model data) and a distributed batch system, augmented with various supervisory and management capabilities, and integrated using Java and XML-based web services.

  4. Intelligent Integration of Information and Services on the Web

    OpenAIRE

    Stroulia, Eleni

    2002-01-01

    The evolution of the World Wide Web from a repository of HTML data to a source of varied distributed services creates exciting opportunities for offering complex, integrated services over the web. The syntactic problems of such integration are being addressed by the advent of the web services stack of standards.1 However, the promise of service integration will not be delivered unless services can be integrated semantically as well. The 2002 AAAI workshop entitled "Intelligent Service Integra...

  5. User Needs of Digital Service Web Portals: A Case Study

    Science.gov (United States)

    Heo, Misook; Song, Jung-Sook; Seol, Moon-Won

    2013-01-01

    The authors examined the needs of digital information service web portal users. More specifically, the needs of Korean cultural portal users were examined as a case study. The conceptual framework of a web-based portal is that it is a complex, web-based service application with characteristics of information systems and service agents. In…

  6. Web Services Basic Profile Version 1.0

    Science.gov (United States)

    Graham, Matthew; Schaaff, Andre; Graham, Matthew

    2010-12-01

    This document describes rules to take into account when implementing SOAP-based web services. It explains also how to check conformance to these rules. It can be read as a "Guideline to VO Web Service Interoperability" or a "How to provide interoperable VO web services".

  7. IVOA Recommendation: Web Services Basic Profile Version 1.0

    OpenAIRE

    Schaaff, Andre; Graham, Matthew

    2011-01-01

    This document describes rules to take into account when implementing SOAP-based web services. It explains also how to check conformance to these rules. It can be read as a "Guideline to VO Web Service Interoperability" or a "How to provide interoperable VO web services".

  8. A Survey on Trust-Based Web Service Provision Approaches

    DEFF Research Database (Denmark)

    Dragoni, Nicola

    2010-01-01

    The basic tenet of Service-Oriented Computing (SOC) is the possibility of building distributed applications on the Web by using Web Services as fundamental building blocks. The proliferation of such services is considered the second wave of evolution in the Internet age, moving the Web from a col...

  9. Applying Semantic Web Services and Wireless Sensor Networks for System Integration

    Science.gov (United States)

    Berkenbrock, Gian Ricardo; Hirata, Celso Massaki; de Oliveira Júnior, Frederico Guilherme Álvares; de Oliveira, José Maria Parente

    In environments like factories, buildings, and homes automation services tend to often change during their lifetime. Changes are concerned to business rules, process optimization, cost reduction, and so on. It is important to provide a smooth and straightforward way to deal with these changes so that could be handled in a faster and low cost manner. Some prominent solutions use the flexibility of Wireless Sensor Networks and the meaningful description of Semantic Web Services to provide service integration. In this work, we give an overview of current solutions for machinery integration that combine both technologies as well as a discussion about some perspectives and open issues when applying Wireless Sensor Networks and Semantic Web Services for automation services integration.

  10. Tool Supported Analysis of Web Services Protocols

    DEFF Research Database (Denmark)

    Marques, Abinoam P.; Ravn, Anders Peter; Srba, Jiri

    2011-01-01

    e.g. in the design of web services protocols, into an intermediate XML format. We further translate this format into a network of communicating state machines directly suitable for verification in the model checking tool UPPAAL. We introduce two types of communication media abstractions in order......We describe an abstract protocol model suitable for modelling of web services and other protocols communicating via unreliable, asynchronous communication channels. The model is supported by a tool chain where the first step translates tables with state/transition protocol descriptions, often used...... to ensure the finiteness of the protocol state-spaces while still being able to verify interesting protocol properties. The translations for different kinds of communication media have been implemented and successfully tested, among others, on agreement protocols from WS-Business Activity....

  11. The Experience for the Concept of Web Service on WebSphere%基于WebSphere平台的Web Service概念实践

    Institute of Scientific and Technical Information of China (English)

    范玉珍; 顾毓清

    2003-01-01

    This paper investigates and summarizes the basic concept of Web Service, covers how to set up the fundamental Web Service structure on WebSphere platform with the provided practical example, the last section of this paper discusses the comparison between the Web Service component-based architecture and the traditional component-based architecture.

  12. Web Service Growing Pains: Understanding Services and Their Clients

    NARCIS (Netherlands)

    Espinha, T.

    2015-01-01

    At an implementation level, web services serve the basic purpose of message exchange between potentially heterogeneous software systems. Through abstracting language- and platform-specific implementations into text-based, human-readable XML and JSON-based formats, different software systems are able

  13. Attitudes Toward Automated Information Retrieval Services Among RASD Members

    Science.gov (United States)

    Nitecki, Danuta A.

    1976-01-01

    Summary of survey of the American Library Association Reference and Adult Services Division (RASD) members concerning attitudes toward, need for, and preferences in acquiring information on automated information retrieval services. (KP)

  14. Quick Web Services Lookup Model Based on Hierarchical Registration

    Institute of Scientific and Technical Information of China (English)

    谢山; 朱国进; 陈家训

    2003-01-01

    Quick Web Services Lookup (Q-WSL) is a new model to registration and lookup of complex services in the Internet. The model is designed to quickly find complex Web services by using hierarchical registration method. The basic concepts of Web services system are introduced and presented, and then the method of hierarchical registration of services is described. In particular, service query document description and service lookup procedure are concentrated, and it addresses how to lookup these services which are registered in the Web services system. Furthermore, an example design and an evaluation of its performance are presented.Specifically, it shows that the using of attributionbased service query document design and contentbased hierarchical registration in Q-WSL allows service requesters to discover needed services more flexibly and rapidly. It is confirmed that Q-WSL is very suitable for Web services system.

  15. Climate Model Diagnostic Analyzer Web Service System

    Science.gov (United States)

    Lee, S.; Pan, L.; Zhai, C.; Tang, B.; Kubar, T. L.; Li, J.; Zhang, J.; Wang, W.

    2015-12-01

    Both the National Research Council Decadal Survey and the latest Intergovernmental Panel on Climate Change Assessment Report stressed the need for the comprehensive and innovative evaluation of climate models with the synergistic use of global satellite observations in order to improve our weather and climate simulation and prediction capabilities. The abundance of satellite observations for fundamental climate parameters and the availability of coordinated model outputs from CMIP5 for the same parameters offer a great opportunity to understand and diagnose model biases in climate models. In addition, the Obs4MIPs efforts have created several key global observational datasets that are readily usable for model evaluations. However, a model diagnostic evaluation process requires physics-based multi-variable comparisons that typically involve large-volume and heterogeneous datasets, making them both computationally- and data-intensive. In response, we have developed a novel methodology to diagnose model biases in contemporary climate models and implementing the methodology as a web-service based, cloud-enabled, provenance-supported climate-model evaluation system. The evaluation system is named Climate Model Diagnostic Analyzer (CMDA), which is the product of the research and technology development investments of several current and past NASA ROSES programs. The current technologies and infrastructure of CMDA are designed and selected to address several technical challenges that the Earth science modeling and model analysis community faces in evaluating and diagnosing climate models. In particular, we have three key technology components: (1) diagnostic analysis methodology; (2) web-service based, cloud-enabled technology; (3) provenance-supported technology. The diagnostic analysis methodology includes random forest feature importance ranking, conditional probability distribution function, conditional sampling, and time-lagged correlation map. We have implemented the

  16. Web Services Security Based on XML Signature and XML Encryption

    Directory of Open Access Journals (Sweden)

    Yue-sheng Gu

    2010-09-01

    Full Text Available With the development of web services application, some issues of web services security are increasingly prominent. As a platform-independent language, XML is widely used for its high expansibility. After analysis the traditional web services security technology, this paper formulates the XML signature and encryption as the core of web services security technology, and describes how to create and verify XML signature, how to encrypt and decrypt XML data. The application of XML signature and encryption in the Web services security is illustrated.

  17. An Architecture for Automated Fire Detection Early Warning System Based on Geoprocessing Service Composition

    Science.gov (United States)

    Samadzadegan, F.; Saber, M.; Zahmatkesh, H.; Joze Ghazi Khanlou, H.

    2013-09-01

    Rapidly discovering, sharing, integrating and applying geospatial information are key issues in the domain of emergency response and disaster management. Due to the distributed nature of data and processing resources in disaster management, utilizing a Service Oriented Architecture (SOA) to take advantages of workflow of services provides an efficient, flexible and reliable implementations to encounter different hazardous situation. The implementation specification of the Web Processing Service (WPS) has guided geospatial data processing in a Service Oriented Architecture (SOA) platform to become a widely accepted solution for processing remotely sensed data on the web. This paper presents an architecture design based on OGC web services for automated workflow for acquisition, processing remotely sensed data, detecting fire and sending notifications to the authorities. A basic architecture and its building blocks for an automated fire detection early warning system are represented using web-based processing of remote sensing imageries utilizing MODIS data. A composition of WPS processes is proposed as a WPS service to extract fire events from MODIS data. Subsequently, the paper highlights the role of WPS as a middleware interface in the domain of geospatial web service technology that can be used to invoke a large variety of geoprocessing operations and chaining of other web services as an engine of composition. The applicability of proposed architecture by a real world fire event detection and notification use case is evaluated. A GeoPortal client with open-source software was developed to manage data, metadata, processes, and authorities. Investigating feasibility and benefits of proposed framework shows that this framework can be used for wide area of geospatial applications specially disaster management and environmental monitoring.

  18. AN ARCHITECTURE FOR AUTOMATED FIRE DETECTION EARLY WARNING SYSTEM BASED ON GEOPROCESSING SERVICE COMPOSITION

    Directory of Open Access Journals (Sweden)

    F. Samadzadegan

    2013-09-01

    Full Text Available Rapidly discovering, sharing, integrating and applying geospatial information are key issues in the domain of emergency response and disaster management. Due to the distributed nature of data and processing resources in disaster management, utilizing a Service Oriented Architecture (SOA to take advantages of workflow of services provides an efficient, flexible and reliable implementations to encounter different hazardous situation. The implementation specification of the Web Processing Service (WPS has guided geospatial data processing in a Service Oriented Architecture (SOA platform to become a widely accepted solution for processing remotely sensed data on the web. This paper presents an architecture design based on OGC web services for automated workflow for acquisition, processing remotely sensed data, detecting fire and sending notifications to the authorities. A basic architecture and its building blocks for an automated fire detection early warning system are represented using web-based processing of remote sensing imageries utilizing MODIS data. A composition of WPS processes is proposed as a WPS service to extract fire events from MODIS data. Subsequently, the paper highlights the role of WPS as a middleware interface in the domain of geospatial web service technology that can be used to invoke a large variety of geoprocessing operations and chaining of other web services as an engine of composition. The applicability of proposed architecture by a real world fire event detection and notification use case is evaluated. A GeoPortal client with open-source software was developed to manage data, metadata, processes, and authorities. Investigating feasibility and benefits of proposed framework shows that this framework can be used for wide area of geospatial applications specially disaster management and environmental monitoring.

  19. Improving access to space weather data via workflows and web services

    Science.gov (United States)

    Sundaravel, Anu Swapna

    The Space Physics Interactive Data Resource (SPIDR) is a web-based interactive tool developed by NOAA's National Geophysical Data Center to provide access to historical space physics datasets. These data sets are widely used by physicists for space weather modeling and predictions. Built on a distributed network of databases and application servers, SPIDR offers services in two ways: via a web page interface and via a web service interface. SPIDR exposes several SOAP-based web services that client applications implement to connect to a number of data sources for data download and processing. At present, the usage of the web services has been difficult, adding unnecessary complexity to client applications and inconvenience to the scientists who want to use these datasets. The purpose of this study focuses on improving SPIDR's web interface to better support data access, integration and display. This is accomplished in two ways: (1) examining the needs of scientists to better understand what web services they require to better access and process these datasets and (2) developing a client application to support SPIDR's SOAP-based services using the Kepler scientific workflow system. To this end, we identified, designed and developed several web services for filtering the existing datasets and created several Kepler workflows to automate routine tasks associated with these datasets. These workflows are a part of the custom NGDC build of the Kepler tool. Scientists are already familiar with Kepler due to its extensive use in this domain. As a result, this approach provides them with tools that are less daunting than raw web services and ultimately more useful and customizable. We evaluated our work by interviewing various scientists who make use of SPIDR and having them use the developed Kepler workflows while recording their feedback and suggestions. Our work has improved SPIDR such that new web services are now available and scientists have access to a desktop

  20. Performance Evaluation of RESTful Web Services for Mobile Devices

    OpenAIRE

    Hatem Hamad; Motaz Saad; Ramzi Abed

    2010-01-01

    Smart Mobile devices and web services are becoming very popular. Mobile devices are physically constraineddevices; low processor speed, limited memory, limited battery, and slow intermit wireless connection. This implies to take inconsideration these factors when implementing web services for mobile devices. In this paper, we evaluate the RESTful webservice for mobile devices against conventional SOAP web services. The experimental results show that RESTful web servicesoutperform conventional...

  1. A New Efficient Method for Calculating Similarity Between Web Services

    Directory of Open Access Journals (Sweden)

    T. RACHAD

    2014-08-01

    Full Text Available Web services allow communication between heterogeneous systems in a distributed environment. Their enormous success and their increased use led to the fact that thousands of Web services are present on the Internet. This significant number of Web services which not cease to increase has led to problems of the difficulty in locating and classifying web services, these problems are encountered mainly during the operations of web services discovery and substitution. Traditional ways of search based on keywords are not successful in this context, their results do not support the structure of Web services and they consider in their search only the identifiers of the web service description language (WSDL interface elements. The methods based on semantics (WSDLS, OWLS, SAWSDL… which increase the WSDL description of a Web service with a semantic description allow raising partially this problem, but their complexity and difficulty delays their adoption in real cases. Measuring the similarity between the web services interfaces is the most suitable solution for this kind of problems, it will classify available web services so as to know those that best match the searched profile and those that do not match. Thus, the main goal of this work is to study the degree of similarity between any two web services by offering a new method that is more effective than existing works.

  2. Development of an Web Service Architecture for Enterprise Application Integration

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Ji-Hyeon; Jung, Jae-Cheon; Chang, Young-Woo; Chang, Hoon-Seon; Kim, Jae-Cheol; Kim, Hang-Bae [Korea Power Engineering Company, Daejeon (Korea, Republic of); Kim, Kyu-Ho; Lee, Dong-Chul [Korea Electric Power Data Network, Daejeon (Korea, Republic of)

    2007-07-01

    The purpose of Enterprise Application Integration (EAI) is to enable the interoperability between two or more enterprise software systems. These systems, for example, can be an Enterprise Resource Planning (ERP) system, an Enterprise Asset Management (EAM) system or a Condition Monitoring system. Traditional EAI approach, based on point-to-point connection, is expensive, vendor specific with limited modules and restricted interoperability with other ERPs and applications. To overcome these drawbacks, the Web Service based EAI has emerged. It allows the integration without point to point linking and with less costs. Many approaches of Web service based EAI are combined with ORACLE, SAP, PeopleSoft, WebSphere, SIEBEL etc. as a system integration platform. The approach still has the restriction that only predefined clients can access the services. This means clients must know exactly the protocol for calling the services and if they don't have the access information they never can get the services. This is because these Web services are based on syntactic service description. In this paper, a semantic based EAI approach, that allows the uninformed clients to access the services, is introduced. The semantic EAI is designed with the Web services that have semantic service descriptions. The Semantic Web Services(SWS) are described in Web Ontology Language for Services(OWL-S), a semantic service ontology language, and advertised in Universal Description, Discovery and Integration (UDDI). Clients find desired services through the UDDI and get services from service providers through Web Service Description Language(WSDL)

  3. Pragmatic Computing - A Semiotic Perspective to Web Services

    Science.gov (United States)

    Liu, Kecheng

    The web seems to have evolved from a syntactic web, a semantic web to a pragmatic web. This evolution conforms to the study of information and technology from the theory of semiotics. The pragmatics, concerning with the use of information in relation to the context and intended purposes, is extremely important in web service and applications. Much research in pragmatics has been carried out; but in the same time, attempts and solutions have led to some more questions. After reviewing the current work in pragmatic web, the paper presents a semiotic approach to website services, particularly on request decomposition and service aggregation.

  4. Web services in the retail industry

    Indian Academy of Sciences (India)

    Sudeep Mallick; Anuj Sharma; B V Kumar; S V Subrahmanya

    2005-04-01

    It is a well-known fact that the retail industry always works on razorthin margins and the key to survival lies in optimization of resources both in space and time dimensions as well as maximization of customer satisfaction. Access to timely and even real-time information to a wide variety of channel and trading partners, sales personnel, line managers, store managers etc. is the key to achieving this. Web services technology holds out a lot of promise for the retail industry in this respect. It is a platform-neutral, easy to deploy set of standards for achieving business data and process integration, without going for proprietary point to point connections. It promises to connect the information providers and information consumers across a wide variety of platforms, devices and on an on-demand basis. Being based on service-oriented architecture (SOA) principles it can also form the enabling service interface layer for other emerging technologies like BAM, BPM, mobile and RFID. In this paper, we attempt to understand information-flow needs in the retail industry and also suggest a roadmap approach by which the retail enterprise could exploit the potential of web services at minimal risk.

  5. The Research on Web Service based Network Management

    Directory of Open Access Journals (Sweden)

    Wenli Dong

    2010-07-01

    Full Text Available This paper proposes Web Service based network management. The Web Service based network management system is analyzed. It consists of network management layer, collaborative management implementation layer, and management function layer mainly. The complex management network tasks can be accomplished respectively by more than one Web Service distributed on Internet and the Web Services interchange information based on XML message. The SNMP/XML gateway and the translation between GDMO/ASN.1 and XML/Schema are designed and implemented to implement the integration between the legacy network management systems and the network management developed by Web Service technologies. The service management in Web Service based network management is discussed. Service composition/re-composition in Web Service based network management is analyzed based on the QoS requirements negotiation between the network management requirements and the statement of Web Service and network, OWL-S being used to described the network management requirements to discover the suitable Web Service, BPEL being used to describe the Web Service composition.

  6. Climate Model Diagnostic Analyzer Web Service System

    Science.gov (United States)

    Lee, S.; Pan, L.; Zhai, C.; Tang, B.; Jiang, J. H.

    2013-12-01

    The latest Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report stressed the need for the comprehensive and innovative evaluation of climate models with newly available global observations. The traditional approach to climate model evaluation, which compares a single parameter at a time, identifies symptomatic model biases and errors but fails to diagnose the model problems. The model diagnosis process requires physics-based multi-variable comparisons that typically involve large-volume and heterogeneous datasets, making them both computationally- and data-intensive. To address these challenges, we are developing a parallel, distributed web-service system that enables the physics-based multi-variable model performance evaluations and diagnoses through the comprehensive and synergistic use of multiple observational data, reanalysis data, and model outputs. We have developed a methodology to transform an existing science application code into a web service using a Python wrapper interface and Python web service frameworks (i.e., Flask, Gunicorn, and Tornado). The web-service system, called Climate Model Diagnostic Analyzer (CMDA), currently supports (1) all the datasets from Obs4MIPs and a few ocean datasets from NOAA and Argo, which can serve as observation-based reference data for model evaluation and (2) many of CMIP5 model outputs covering a broad range of atmosphere, ocean, and land variables from the CMIP5 specific historical runs and AMIP runs. Analysis capabilities currently supported by CMDA are (1) the calculation of annual and seasonal means of physical variables, (2) the calculation of time evolution of the means in any specified geographical region, (3) the calculation of correlation between two variables, and (4) the calculation of difference between two variables. A web user interface is chosen for CMDA because it not only lowers the learning curve and removes the adoption barrier of the tool but also enables instantaneous use

  7. Crawling PubMed with web agents for literature search and alerting services

    Directory of Open Access Journals (Sweden)

    Carlos CARVALHAL

    2013-05-01

    Full Text Available In this paper we present ASAP - Automated Search with Agents in PubMed, a web-based service aiming to manage and automate scientific literature search in the PubMed database. The system allows the creation and management of web agents, parameterized thematically and functionally, that crawl the PubMed database autonomously and periodically, aiming to search and retrieve relevant results according the requirements provided by the user. The results, containing the publications list retrieved, are emailed to the agent owner on a weekly basis, during the activity period defined for the web agent. The ASAP service is devoted to help researchers, especially from the field of biomedicine and bioinformatics, in order to increase their productivity, and can be accessed at: http://esa.ipb.pt/~agentes.

  8. Web Map Services (WMS) Global Mosaic

    Science.gov (United States)

    Percivall, George; Plesea, Lucian

    2003-01-01

    The WMS Global Mosaic provides access to imagery of the global landmass using an open standard for web mapping. The seamless image is a mosaic of Landsat 7 scenes; geographically-accurate with 30 and 15 meter resolutions. By using the OpenGIS Web Map Service (WMS) interface, any organization can use the global mosaic as a layer in their geospatial applications. Based on a trade study, an implementation approach was chosen that extends a previously developed WMS hosting a Landsat 5 CONUS mosaic developed by JPL. The WMS Global Mosaic supports the NASA Geospatial Interoperability Office goal of providing an integrated digital representation of the Earth, widely accessible for humanity's critical decisions.

  9. The Semantics of Web Services: An Examination in GIScience Applications

    Directory of Open Access Journals (Sweden)

    Xuan Shi

    2013-09-01

    Full Text Available Web service is a technological solution for software interoperability that supports the seamless integration of diverse applications. In the vision of web service architecture, web services are described by the Web Service Description Language (WSDL, discovered through Universal Description, Discovery and Integration (UDDI and communicate by the Simple Object Access Protocol (SOAP. Such a divination has never been fully accomplished yet. Although it was criticized that WSDL only has a syntactic definition of web services, but was not semantic, prior initiatives in semantic web services did not establish a correct methodology to resolve the problem. This paper examines the distinction and relationship between the syntactic and semantic definitions for web services that characterize different purposes in service computation. Further, this paper proposes that the semantics of web service are neutral and independent from the service interface definition, data types and platform. Such a conclusion can be a universal law in software engineering and service computing. Several use cases in the GIScience application are examined in this paper, while the formalization of geospatial services needs to be constructed by the GIScience community towards a comprehensive ontology of the conceptual definitions and relationships for geospatial computation. Advancements in semantic web services research will happen in domain science applications.

  10. Web Service Description and Discovery Based on Semantic Model

    Institute of Scientific and Technical Information of China (English)

    YANG Xuemei; XU Lizhen; DONG Yisheng; WANG Yongli

    2006-01-01

    A novel semantic model of Web service description and discovery was proposed through an extension for profile model of Web ontology language for services (OWL-S) in this paper.Similarity matching of Web services was implemented through computing weighted summation of semantic similarity value based on specific domain ontology and dynamical satisfy extent evaluation for quality of service (QoS).Experiments show that the provided semantic matching model is efficient.

  11. Agility through Automated Negotiation for C2 Services

    Science.gov (United States)

    2014-06-01

    allow simple implementation of complex interfaces. These Application Programming Interfaces ( APIs ) specify how different software components should...Maps, Twitter and Amazon provide content for this type of mashups (Pautasso et. al., 2008). Information Technology (IT) protocols and applications...the traditional model of the web services schema, but does not need Universal Description, Discovery and Integration (UDDI). Web service APIs that

  12. Web Services as Public Services: Are We Supporting Our Busiest Service Point?

    Science.gov (United States)

    Riley-Huff, Debra A.

    2009-01-01

    This article is an analysis of academic library organizational culture, patterns, and processes as they relate to Web services. Data gathered in a research survey is examined in an attempt to reveal current departmental and administrative attitudes, practices, and support for Web services in the library research environment. (Contains 10 tables.)

  13. Mobile home automation-merging mobile value added services and home automation technologies

    OpenAIRE

    Rosendahl, Andreas; Hampe, Felix J.; Botterweck, Goetz

    2007-01-01

    non-peer-reviewed In this paper we study mobile home automation, a field that emerges from an integration of mobile application platforms and home automation technologies. In a conceptual introduction we first illustrate the need for such applications by introducing a two-dimensional conceptual model of mobility. Subsequently we suggest an architecture and discuss different options of how a user might access a mobile home automation service and the controlled devices. As another contrib...

  14. Multi- Layer Tree Hierarchical Architecture Based on Web Service

    Institute of Scientific and Technical Information of China (English)

    TONG Hengjian; LI Deren; ZHU Xinyan; SHAO Zhenfeng

    2006-01-01

    To solve the problem of the information share and services integration in population information system, we propose a multi-layer tree hierarchical architecture. The com mand (Web Service Call) is recursively multicast from top layer of tree to bottom layer of tree and statistical data are gathered from bottom layer to top layer. We implemented the architecture by using Web Services technology. In our implementation, client program is the requestor of Web Services,and all leaf nodes of the last layer are only the provider of Web Services. For those nodes of intermediate layers, every node is not only the provider of Web Services, but also the dispatcher of Web Services. We take population census as an example to describe the working flow of the architecture.

  15. Composition of web services in BPMN%用BPMN辅助整合Web Services

    Institute of Scientific and Technical Information of China (English)

    胡燕梅; 邱锦伦

    2007-01-01

    介绍了用BPMN设计整合Web Service,并产生Web Service描述语言(WSDL)形式的可执行规范语言,以及利用WSDL可以转换成业务流程管理标识(BPMN)的方法,动态地将已存在的Web Service通过BPMN图形化建模方法进行整合.鉴于BPMN的图形化设计,可以选择喜欢的可执行语言来实现该整合方案,主要采用与BPMN密切关联的Web Service语言--面向服务的业务流程可执行语言(BPEL4WS).

  16. Business and scientific workflows a web service-oriented approach

    CERN Document Server

    Tan, Wei

    2013-01-01

    Focuses on how to use web service computing and service-based workflow technologies to develop timely, effective workflows for both business and scientific fields Utilizing web computing and Service-Oriented Architecture (SOA), Business and Scientific Workflows: A Web Service-Oriented Approach focuses on how to design, analyze, and deploy web service-based workflows for both business and scientific applications in many areas of healthcare and biomedicine. It also discusses and presents the recent research and development results. This informative reference features app

  17. Semi-automated software service integration in virtual organisations

    Science.gov (United States)

    Afsarmanesh, Hamideh; Sargolzaei, Mahdi; Shadi, Mahdieh

    2015-08-01

    To enhance their business opportunities, organisations involved in many service industries are increasingly active in pursuit of both online provision of their business services (BSs) and collaborating with others. Collaborative Networks (CNs) in service industry sector, however, face many challenges related to sharing and integration of their collection of provided BSs and their corresponding software services. Therefore, the topic of service interoperability for which this article introduces a framework is gaining momentum in research for supporting CNs. It contributes to generation of formal machine readable specification for business processes, aimed at providing their unambiguous definitions, as needed for developing their equivalent software services. The framework provides a model and implementation architecture for discovery and composition of shared services, to support the semi-automated development of integrated value-added services. In support of service discovery, a main contribution of this research is the formal representation of services' behaviour and applying desired service behaviour specified by users for automated matchmaking with other existing services. Furthermore, to support service integration, mechanisms are developed for automated selection of the most suitable service(s) according to a number of service quality aspects. Two scenario cases are presented, which exemplify several specific features related to service discovery and service integration aspects.

  18. Industrial TCP/IP Services Monitoring through Embedded Web Services

    Directory of Open Access Journals (Sweden)

    Francisco Maciá-Pérez

    2007-12-01

    Full Text Available The amount of IT devices and services incorporated in the industrial environment has led to the need to design mechanisms that will ensure its correct operation and minimise stoppage times. This paper proposes a system based on service-oriented architectures that allows the correct operation and monitoring of the applications and services running in this type of production elements. The main component of the system is a reduced size network device—that we have named eNSM device—in which the monitoring function proposed has been embedded as a web service. The whole system is based on a distributed application whose components are software agents. In addition, an application protocol named NSMP has been defined for communication between these agents.

  19. OGC Web Services standards by example : the European Seismic Portal

    Science.gov (United States)

    Frobert, L.; Kamb, L.; Trani, L.; Spinuso, A.; Bossu, R.; Van Eck, T.

    2011-12-01

    NERIES (2006-2010) was an Integrated Infrastructure Initiative (I3) project in the Sixth Framework Program (FP6) of the European Commission (EC), aiming at networking the European seismic networks, improving access to data, allowing access to specific seismic infrastructures and pursuing targeted research developing the next generation of tools for improved service and data analysis. During this project, a web portal was developed using web services to access data and a Visual Web Applications to display them. However these web services were not conform to any standard, making them difficult to consume by any new user interface. Therefore, for the NERA project, the follow-up of NERIES, we have proposed the use of web services standards to access our data. We have decided to use standards defined by the Open Geospatial Consortium (OGC). The OGC defines standards for the Web service interfaces to access geo-tagged data. The events and seismic stations are also geo-tagged making these web services suitable for our purpose. Using standard web services gives us the opportunity to distribute our data across all conformant consumers to these standards through various programming languages and applications We have implemented a preliminary version of web services conforming to the Web Map Service (WMS) and Web Feature Service (WFS) standard to access our catalog of seismic events (nearly 200 000 events). To visualize them we have made four examples demo on our web site using different technologies (Adobe Flash, JavaScript, Java with Nasa World Wind and UDig a desktop GIS application). In the future we hope to implement other OGC Web services standard like : - Sensor Observation Service (SOS) to provide seismic waveform records; - Web Notification Service (WNS); - Catalog Service for the Web (CSW) to provide a search engine of all our web services; - Web Processing Service (WPS) to process data between different services. The power of the use of OGC standards is the easy

  20. Dynamic web service composition based on OWL-S

    Institute of Scientific and Technical Information of China (English)

    Jing DONG; Yongtao SUN; Sheng YANG; Kang ZHANG

    2006-01-01

    Composing existing web services for enterprise applications may enable higher level of reuse. However the composition processes are mostly static and lack of support for runtime redesign. In this paper, we describe our approach to the extension of the OWL-S ontology framework for dynamic web service composition. We raise the level of abstraction and propose an abstract service layer so that web services can be composed at the abstract service level instead of the concrete level. Each abstract service is attached with an instance pool including all instances of the abstract service to facilitate fail-over and dynamic compositions.

  1. Creating OGC Web Processing Service workflows using a web-based editor

    Science.gov (United States)

    de Jesus, J.; Walker, P.; Grant, M.

    2012-04-01

    The OGC WPS (Web Processing Service) specifies how geospatial algorithms may be accessed in an SOA (Service Oriented Architecture). Service providers can encode both simple and sophisticated algorithms as WPS processes and publish them as web services. These services are not only useful individually but may be built into complex processing chains (workflows) that can solve complex data analysis and/or scientific problems. The NETMAR project has extended the Web Processing Service (WPS) framework to provide transparent integration between it and the commonly used WSDL (Web Service Description Language) that describes the web services and its default SOAP (Simple Object Access Protocol) binding. The extensions allow WPS services to be orchestrated using commonly used tools (in this case Taverna Workbench, but BPEL based systems would also be an option). We have also developed a WebGUI service editor, based on HTML5 and the WireIt! Javascript API, that allows users to create these workflows using only a web browser. The editor is coded entirely in Javascript and performs all XSLT transformations needed to produce a Taverna compatible (T2FLOW) workflow description which can be exported and run on a local Taverna Workbench or uploaded to a web-based orchestration server and run there. Here we present the NETMAR WebGUI service chain editor and discuss the problems associated with the development of a WebGUI for scientific workflow editing; content transformation into the Taverna orchestration language (T2FLOW/SCUFL); final orchestration in the Taverna engine and how to deal with the large volumes of data being transferred between different WPS services (possibly running on different servers) during workflow orchestration. We will also demonstrate using the WebGUI for creating a simple workflow making use of published web processing services, showing how simple services may be chained together to produce outputs that would previously have required a GIS (Geographic

  2. Persistence and availability of Web services in computational biology.

    Directory of Open Access Journals (Sweden)

    Sebastian J Schultheiss

    Full Text Available We have conducted a study on the long-term availability of bioinformatics Web services: an observation of 927 Web services published in the annual Nucleic Acids Research Web Server Issues between 2003 and 2009. We found that 72% of Web sites are still available at the published addresses, only 9% of services are completely unavailable. Older addresses often redirect to new pages. We checked the functionality of all available services: for 33%, we could not test functionality because there was no example data or a related problem; 13% were truly no longer working as expected; we could positively confirm functionality only for 45% of all services. Additionally, we conducted a survey among 872 Web Server Issue corresponding authors; 274 replied. 78% of all respondents indicate their services have been developed solely by students and researchers without a permanent position. Consequently, these services are in danger of falling into disrepair after the original developers move to another institution, and indeed, for 24% of services, there is no plan for maintenance, according to the respondents. We introduce a Web service quality scoring system that correlates with the number of citations: services with a high score are cited 1.8 times more often than low-scoring services. We have identified key characteristics that are predictive of a service's survival, providing reviewers, editors, and Web service developers with the means to assess or improve Web services. A Web service conforming to these criteria receives more citations and provides more reliable service for its users. The most effective way of ensuring continued access to a service is a persistent Web address, offered either by the publishing journal, or created on the authors' own initiative, for example at http://bioweb.me. The community would benefit the most from a policy requiring any source code needed to reproduce results to be deposited in a public repository.

  3. A New Approach to Development of Composite Web Services

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    With the requirement for complex Web Services steadily increasing, there is a growing interest for reusing basic, existing Web Services to composite new ones. We present a composite Web Services development approach driven by model driven architecture (MDA): using UML(Unified Modeling Language) class diagram to model structure PIM(Plateform Independent Platform) and UML activity diagram to model behavior PIM, then by model transformation converting the PIMs to specific Web Services specification platforms and execution platform to get the corresponding PSMs (platform specific models). The main contributions of this paper are the all-around solution to Web Services composition development and the transformation rules for structure and behavior model of Web Services between PIMs and PSMs.

  4. Feature-based engineering of compensations in web service environment

    DEFF Research Database (Denmark)

    Schaefer, Michael; Dolog, Peter

    2009-01-01

    In this paper, we introduce a product line approach for developing Web services with extended compensation capabilities. We adopt a feature modelling approach in order to describe variable and common compensation properties of Web service variants, as well as service consumer application...

  5. A Quality of Service Broker Based Process Model for Dynamic Web Service Composition

    Directory of Open Access Journals (Sweden)

    Maya Rathore

    2011-01-01

    Full Text Available Problem statement: With fast spreading of web services technology over the Internet, the quality aspects of a web service has received significant attention to the practitioners. The quality of web service includes both functional and nonfunctional details. In order to provide the correct and meaningful information to web service consumer, sometimes there is a need to compose existing web services in order to create new web service. Approach: We have proposed a Quality of Service (QoS broker based process model for Dynamic Web Service Composition (DWSC. The QoS broker in the proposed model is responsible for web service collection, selection, optimization and composition based on the service consumer’s requirements. It also verifies and certifies the functional and QoS specifications provided by service provider at the time of web service registration before publishing it in Universal Description, Discovery and Integration (UDDI registry. The detailed working of QoS broker is also presented in the study with functionality of each component. We will also discuss the process flowchart for new web service registration and web service composition at runtime. Results: The proposed QoS broker based model for dynamic web service composition solves the problems associated with quality of web service. It also prevents the central repository from malicious service provider to publish wrong information. Conclusion: The QoS broker-based process model for dynamic web service composition guarantees the quality of delivered service to web service consumers and improve the efficiency of composition.

  6. A web service for service composition to aid geospatial modelers

    Science.gov (United States)

    Bigagli, L.; Santoro, M.; Roncella, R.; Mazzetti, P.

    2012-04-01

    The identification of appropriate mechanisms for process reuse, chaining and composition is considered a key enabler for the effective uptake of a global Earth Observation infrastructure, currently pursued by the international geospatial research community. In the Earth and Space Sciences, such a facility could primarily enable integrated and interoperable modeling, for what several approaches have been proposed and developed, over the last years. In fact, GEOSS is specifically tasked with the development of the so-called "Model Web". At increasing levels of abstraction and generalization, the initial stove-pipe software tools have evolved to community-wide modeling frameworks, to Component-Based Architecture solution, and, more recently, started to embrace Service-Oriented Architectures technologies, such as the OGC WPS specification and the WS-* stack of W3C standards for service composition. However, so far, the level of abstraction seems too low for implementing the Model Web vision, and far too complex technological aspects must still be addressed by both providers and users, resulting in limited usability and, eventually, difficult uptake. As by the recent ICT trend of resource virtualization, it has been suggested that users in need of a particular processing capability, required by a given modeling workflow, may benefit from outsourcing the composition activities into an external first-class service, according to the Composition as a Service (CaaS) approach. A CaaS system provides the necessary interoperability service framework for adaptation, reuse and complementation of existing processing resources (including models and geospatial services in general) in the form of executable workflows. This work introduces the architecture of a CaaS system, as a distributed information system for creating, validating, editing, storing, publishing, and executing geospatial workflows. This way, the users can be freed from the need of a composition infrastructure and

  7. Finite State Machine Based Evaluation Model for Web Service Reliability Analysis

    CERN Document Server

    M, Thirumaran; Abarna, S; P, Lakshmi

    2011-01-01

    Now-a-days they are very much considering about the changes to be done at shorter time since the reaction time needs are decreasing every moment. Business Logic Evaluation Model (BLEM) are the proposed solution targeting business logic automation and facilitating business experts to write sophisticated business rules and complex calculations without costly custom programming. BLEM is powerful enough to handle service manageability issues by analyzing and evaluating the computability and traceability and other criteria of modified business logic at run time. The web service and QOS grows expensively based on the reliability of the service. Hence the service provider of today things that reliability is the major factor and any problem in the reliability of the service should overcome then and there in order to achieve the expected level of reliability. In our paper we propose business logic evaluation model for web service reliability analysis using Finite State Machine (FSM) where FSM will be extended to analy...

  8. Analysis of Automated Modern Web Crawling and Testing Tools and Their Possible Employment for Information Extraction

    Directory of Open Access Journals (Sweden)

    Tomas Grigalis

    2012-04-01

    Full Text Available World Wide Web has become an enormously big repository of data. Extracting, integrating and reusing this kind of data has a wide range of applications, including meta-searching, comparison shopping, business intelligence tools and security analysis of information in websites. However, reaching information in modern WEB 2.0 web pages, where HTML tree is often dynamically modified by various JavaScript codes, new data are added by asynchronous requests to the web server and elements are positioned with the help of cascading style sheets, is a difficult task. The article reviews automated web testing tools for information extraction tasks.Article in Lithuanian

  9. On Web Services Based Cloud Interoperability

    Directory of Open Access Journals (Sweden)

    Reeta Sony A.L

    2012-09-01

    Full Text Available Cloud Computing is a paradigm shift in the field of Computing. It is moving at an incredible fast pace and one of the fastest evolving domains of computer science today. It consist set of technology and service models that concentrates on the internet base use and delivery of IT applications, processing capability, storage and memory space. There is a shift from the traditional in-house servers and applications to the next generation of cloud computing applications. With many of the computer giants like Google, Microsoft, etc. entering into the cloud computing arena, there will be thousands of applications running on the cloud. There are several cloud environments available in the market today which support a huge consumer-base. Eventually this will lead to a multitude of standards, technologies and products being provided on the cloud. Consumers will need certain degrees of flexibility to use the cloud application/services of their choice and at the same time will need these applications/services to communicate with each other. This paper emphasizes cloud computing and provides a solution to achieve Interoperability, which is in the form of Web Services. The paper will also provide a Live Case Study where interoperability comes into play - Connecting Google App Engine and Microsoft Windows Azure Platform, two of the leading Cloud Platforms available today. GAE and WAP are two Cloud Frameworks which have very little in common, making interoperability an absolute necessary.

  10. Multi-Agent Based Model for Web Service Composition

    OpenAIRE

    2016-01-01

    The evolution of the Internet and the competitiveness among companies were factors in the explosion of Web services. Web services are applications available on the Internet each performing a particular task. Web users often need to call different services to achieve a more complex task that can’t be satisfied by a simple service. And users often prefer to have the best services responding to their requests. In this context, we should measure the Quality of Service (QoS) which is a very import...

  11. Pattern Analysis and Signature Extraction for Intrusion Attacks on Web Services

    Directory of Open Access Journals (Sweden)

    Urjita Thakar

    2010-07-01

    Full Text Available The increasing popularity of web service technology is attracting hackers and attackers to hack the webservices and the servers on which they run. Organizations are therefore facing the challenge ofimplementing adequate security for Web Services. A major threat is that of intruders which maymaliciously try to access the data or services. The automated methods of signature extraction extract thebinary pattern blindly resulting in more false positives. In this paper a semi automated approach isproposed to analyze the attacks and generate signatures for web services. For data collection, apart fromthe conventional SOAP data loggers, honeypots are also used that collect small data which is of high value.To filter out the most suspicious part of the data, SVM based classifier is employed to aid the systemadministrator. By applying an attack signature algorithm on the filtered data, a more balanced attacksignature is extracted that results in fewer false positives and negatives. It helps the Security Administratorto identify the web services that are vulnerable or are attacked more frequently.

  12. A Mediation Framework for Mobile Web Service Provisioning

    CERN Document Server

    Srirama, Satish Narayana; Prinz, Wolfgang; 10.1109/EDOCW.2006.9

    2010-01-01

    Web Services and mobile data services are the newest trends in information systems engineering in wired and wireless domains, respectively. Web Services have a broad range of service distributions while mobile phones have large and expanding user base. To address the confluence of Web Services and pervasive mobile devices and communication environments, a basic mobile Web Service provider was developed for smart phones. The performance of this Mobile Host was also analyzed in detail. Further analysis of the Mobile Host to provide proper QoS and to check Mobile Host's feasibility in the P2P networks, identified the necessity of a mediation framework. The paper describes the research conducted with the Mobile Host, identifies the tasks of the mediation framework and then discusses the feasible realization details of such a mobile Web Services mediation framework.

  13. Analysis of Trust-Based Approaches for Web Service Selection

    DEFF Research Database (Denmark)

    Dragoni, Nicola; Miotto, Nicola

    2011-01-01

    a collection of pages to a collections of services. Consensus is growing that this Web service revolution wont eventuate until we resolve trust-related issues. Indeed, the intrinsic openness of the SOC vision makes crucial to locate useful services and recognize them as trustworthy. In this paper we review......The basic tenet of Service-Oriented Computing (SOC) is the possibility of building distributed applications on the Web by using Web services as fundamental building blocks. The proliferation of such services is considered the second wave of evolution in the Internet age, moving the Web from...... the field of trust-based Web service selection, providing a structured classification of current approaches and highlighting the main limitations of each class and of the overall field....

  14. Detecting feature interactions in Web services with model checking techniques

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    As a platform-independent software system, a Web service is designed to offer interoperability among diverse and heterogeneous applications.With the introduction of service composition in the Web service creation, various message interactions among the atomic services result in a problem resembling the feature interaction problem in the telecommunication area.This article defines the problem as feature interaction in Web services and proposes a model checking-based detection method.In the method, the Web service description is translated to the Promela language - the input language of the model checker simple promela interpreter (SPIN), and the specific properties, expressed as linear temporal logic (LTL) formulas, are formulated according to our classification of feature interaction.Then, SPIN is used to check these specific properties to detect the feature interaction in Web services.

  15. Integración de procesos de negocio basados en servicios Web: Coreografía y satisfacción de restricciones Integration of web service-based business processes: web-service choreography and constraint satisfaction

    Directory of Open Access Journals (Sweden)

    Jorge Giraldo

    2008-01-01

    Full Text Available Los procesos de negocio en ocasiones necesitan funcionalidades adicionales que pueden alcanzarse empleando servicios del mismo dominio o de uno externo. Durante este procedimiento, los servicios web involucrados deben integrarse, de tal forma que sus funcionalidades individuales generen un comportamiento global. La coreografía de servicios web controla la secuencia de las interacciones entre los servicios durante el proceso de integración. Este artículo presenta una aproximación al modelado basado en restricciones de la coreografía de servicios web, a fin de lograr su automatización.Business processes sometimes need additional functions which can be reached through the use of services of the same domain or an external one. During this procedure, web services involved should be integrated in such a way that its individual functions can generate a global behavior. Web-service choreography controls interaction sequences among services during integration process. This article shows an approach to modeling based on web-service choreography restrictions with the purpose of achieving its automation.

  16. Web Service Assurance: The Notion and the Issues

    Directory of Open Access Journals (Sweden)

    Atousa Pahlevan

    2012-02-01

    Full Text Available Web service technology provides basic infrastructure for deploying collaborative business processes. Web Service security standards and protocols aim to provide secure communication and conversation between service providers and consumers. Still, for a client calling a Web service it is difficult to ascertain that a particular service instance satisfies—at execution time—specific non-functional properties. In this paper we introduce the notion of certified Web service assurance, characterizing how service consumers can specify the set of security properties that a service should satisfy. Also, we illustrate a mechanism to re-check non-functional properties when the execution context changes. To this end, we introduce the concept of context-aware certificate, and describe a dynamic, context-aware service discovery environment.

  17. BioSWR--semantic web services registry for bioinformatics.

    Directory of Open Access Journals (Sweden)

    Dmitry Repchevsky

    Full Text Available Despite of the variety of available Web services registries specially aimed at Life Sciences, their scope is usually restricted to a limited set of well-defined types of services. While dedicated registries are generally tied to a particular format, general-purpose ones are more adherent to standards and usually rely on Web Service Definition Language (WSDL. Although WSDL is quite flexible to support common Web services types, its lack of semantic expressiveness led to various initiatives to describe Web services via ontology languages. Nevertheless, WSDL 2.0 descriptions gained a standard representation based on Web Ontology Language (OWL. BioSWR is a novel Web services registry that provides standard Resource Description Framework (RDF based Web services descriptions along with the traditional WSDL based ones. The registry provides Web-based interface for Web services registration, querying and annotation, and is also accessible programmatically via Representational State Transfer (REST API or using a SPARQL Protocol and RDF Query Language. BioSWR server is located at http://inb.bsc.es/BioSWR/and its code is available at https://sourceforge.net/projects/bioswr/under the LGPL license.

  18. Web-Based Course Management and Web Services

    Science.gov (United States)

    Mandal, Chittaranjan; Sinha, Vijay Luxmi; Reade, Christopher M. P.

    2004-01-01

    The architecture of a web-based course management tool that has been developed at IIT [Indian Institute of Technology], Kharagpur and which manages the submission of assignments is discussed. Both the distributed architecture used for data storage and the client-server architecture supporting the web interface are described. Further developments…

  19. Testing Metadata Existence of Web Map Services

    Directory of Open Access Journals (Sweden)

    Jan Růžička

    2011-05-01

    Full Text Available For a general user is quite common to use data sources available on WWW. Almost all GIS software allow to use data sources available via Web Map Service (ISO/OGC standard interface. The opportunity to use different sources and combine them brings a lot of problems that were discussed many times on conferences or journal papers. One of the problem is based on non existence of metadata for published sources. The question was: were the discussions effective? The article is partly based on comparison of situation for metadata between years 2007 and 2010. Second part of the article is focused only on 2010 year situation. The paper is created in a context of research of intelligent map systems, that can be used for an automatic or a semi-automatic map creation or a map evaluation.

  20. Web Services-Based Test Report Generation

    Institute of Scientific and Technical Information of China (English)

    LUO Ling; BAI Xiaoying

    2005-01-01

    Tests involving a large number of test cases and test scenarios are always time- and effort-intensive, and use ad hoc approaches. Test management is needed to control the complexity and the quality of the testing of large software systems. The reporting mechanism is critical for monitoring the testing progress, analyzing test results, and evaluating the test effectiveness for a disciplined testing process throughout the testing lifecycle. This paper presents an XML-based report generation method for large system testing. The service-oriented architecture enables flexible test report generation, presentation, and exchange to facilitate collaboration in a distributed environment. The results show that proper reporting can effectively improve the visibility of the testing process and that this web-based approach is critical to enhance communication among multiple testing groups.

  1. WEB SERVICE SELECTION ALGORITHM BASED ON PRINCIPAL COMPONENT ANALYSIS

    Institute of Scientific and Technical Information of China (English)

    Kang Guosheng; Liu Jianxun; Tang Mingdong; Cao Buqing

    2013-01-01

    Existing Web service selection approaches usually assume that preferences of users have been provided in a quantitative form by users.However,due to the subjectivity and vagueness of preferences,it may be impractical for users to specify quantitative and exact preferences.Moreover,due to that Quality of Service (QoS) attributes are often interrelated,existing Web service selection approaches which employ weighted summation of QoS attribute values to compute the overall QoS of Web services may produce inaccurate results,since they do not take correlations among QoS attributes into account.To resolve these problems,a Web service selection framework considering user's preference priority is proposed,which incorporates a searching mechanism with QoS range setting to identify services satisfying the user's QoS constraints.With the identified service candidates,based on the idea of Principal Component Analysis (PCA),an algorithm of Web service selection named PCAoWSS (Web Service Selection based on PCA) is proposed,which can eliminate the correlations among QoS attributes and compute the overall QoS of Web services accurately.After computing the overall QoS for each service,the algorithm ranks the Web service candidates based on their overall QoS and recommends services with top QoS values to users.Finally,the effectiveness and feasibility of our approach are validated by experiments,i.e.the selected Web service by our approach is given high average evaluation than other ones by users and the time cost of PCA-WSS algorithm is not affected acutely by the number of service candidates.

  2. Web services for distributed and interoperable hydro-information systems

    Directory of Open Access Journals (Sweden)

    J. Horak

    2008-03-01

    Full Text Available Web services support the integration and interoperability of Web-based applications and enable machine-to-machine interaction. The concepts of web services and open distributed architecture were applied to the development of T-DSS, the prototype customised for web based hydro-information systems. T-DSS provides mapping services, database related services and access to remote components, with special emphasis placed on the output flexibility (e.g. multilingualism, where SOAP web services are mainly used for communication. The remote components are represented above all by remote data and mapping services (e.g. meteorological predictions, modelling and analytical systems (currently HEC-HMS, MODFLOW and additional utilities, which support decision making in water management.

  3. Web services for distributed and interoperable hydro-information systems

    Directory of Open Access Journals (Sweden)

    J. Horak

    2007-06-01

    Full Text Available Web services support the integration and interoperability of Web-based applications and enable machine-to-machine interaction. The concepts of web services and open distributed architecture were applied to the development of T-DSS, the prototype customised for web based hydro-information systems. T-DSS provides mapping services, database related services and access to remote components, with special emphasis placed on output flexibility (e.g. multilingualism, where SOAP web services are mainly used for communication. The remote components are represented above all by distant data and mapping services (e.g. eteorological predictions, modelling and analytical systems (currently HEC-HMS, Modflow and additional utilities, which support decision making in water management.

  4. Web services for distributed and interoperable hydro-information systems

    Science.gov (United States)

    Horak, J.; Orlik, A.; Stromsky, J.

    2008-03-01

    Web services support the integration and interoperability of Web-based applications and enable machine-to-machine interaction. The concepts of web services and open distributed architecture were applied to the development of T-DSS, the prototype customised for web based hydro-information systems. T-DSS provides mapping services, database related services and access to remote components, with special emphasis placed on the output flexibility (e.g. multilingualism), where SOAP web services are mainly used for communication. The remote components are represented above all by remote data and mapping services (e.g. meteorological predictions), modelling and analytical systems (currently HEC-HMS, MODFLOW and additional utilities), which support decision making in water management.

  5. Semi-automatic web service composition for the life sciences using the BioMoby semantic web framework.

    Science.gov (United States)

    DiBernardo, Michael; Pottinger, Rachel; Wilkinson, Mark

    2008-10-01

    Researchers in the life-sciences are currently limited to small-scale informatics experiments and analyses because of the lack of interoperability among life-sciences web services. This limitation can be addressed by annotating services and their interfaces with semantic information, so that interoperability problems can be reasoned about programmatically. The Moby semantic web framework is a popular and mature platform that is used for this purpose. However, the number of services that are available to select from when building a workflow is becoming unmanageable for users. As such, attempts have been made to assist with service selection and composition. These tasks fall under the general label of automated service composition. We present a prototype workflow assembly client that reduces the number of choices that users have to make by (1) restricting the overall set of services presented to them and (2) ranking services so that the the most desirable ones are presented first. We demonstrate via an evaluation of this prototype that a unification of relatively simple techniques can rank desirable services highly while maintaining interactive response times.

  6. Assessment of OGC Web Processing Services for REST principles

    CERN Document Server

    Granell, Carlos; Tamayo, Alain; Huerta, Joaquín

    2012-01-01

    Recent distributed computing trends advocate the use of Representational State Transfer (REST), which aligns to the same principles than shape the Web, to alleviate the inherent complexity of the Web services standards in building service-oriented web applications. In this paper, we focus on the particular case of geospatial services interfaced by the OGC Web Processing Service (WPS) specification, geoprocessing services on top of service oriented architectures, in order to assess whether WPS-based geoprocessing services can be viewed from the architectural principles exposed in REST. Our concluding remarks suggest that the adoption of REST principles, to specially harness the built-in mechanisms of the HTTP application protocol, may be beneficial in scenarios where ad hoc composition of geoprocessing services are required, common for most non-expert users of geospatial information infrastructures.

  7. Toward a Unified Framework for Web Service Trustworthiness

    DEFF Research Database (Denmark)

    Miotto, N.; Dragoni, Nicola

    2012-01-01

    The intrinsic openness of the Service-Oriented Computing vision makes crucial to locate useful services and recognize them as trustworthy. What does it mean that a Web service is trustworthy? How can a software agent evaluate the trustworthiness of a Web service? In this paper we present an ongoing...... research aiming at providing an answer to these key issues to realize this vision. In particular, starting from an analysis of the weaknesses of current approaches, we discuss the possibility of a unified framework for Web service trustworthiness. The founding principle of our novel framework is that “hard...

  8. Software Reliability in Semantic Web Service Composition Applications

    Directory of Open Access Journals (Sweden)

    Liviu Adrian COTFAS

    2010-01-01

    Full Text Available Web Service Composition allows the development of easily reconfigurable applications that can be quickly adapted to business changes. Due to the shift in paradigm from traditional systems, new approaches are needed in order to evaluate the reliability of web service composition applications. In this paper we present an approach based on intelligent agents for semiautomatic composition as well as methods for assessing reliability. Abstract web services, corresponding to a group of services that accomplishes a specific functionality are used as a mean of assuring better system reliability. The model can be extended with other Quality of Services – QoS attributes.

  9. Histories of Public Service Broadcasters on the Web

    DEFF Research Database (Denmark)

    This edited volume details multiple and dynamic histories of relations between public service broadcasters and the World Wide Web. What does it mean to be a national broadcaster in a global communications environment? What are the commercial and public service pressures that were brought to bear...... when public service broadcasters implemented web services? How did “one- to-many” broadcasters adapt to the “many-to-many” medium of the internet? The thematic or- ganisation of this collection addresses such major issues, while each chapter offers a particular historical account of relations between...... public service broadcasters and the World Wide Web....

  10. Krishi-Services-Web Services Based solution for agricultural issues

    Directory of Open Access Journals (Sweden)

    Deepanshi Garg

    2013-06-01

    Full Text Available Web Service is an emerging technology for the agricultural field to improve crop productivity in aspect of quality and quantity. India is known as an agricultural country and majority of Indian population lives in rural areas. The Indian Farmers are facing a lot of difficulties to increase production of crops. Now a day lots ofresearch has been done in this area, but still farmers are unable to achieve upper-bound yield due to lack of knowledge about this research. So to overcome this problem we are proposing a novel framework that is “Krishi-Services” to make various services and information available at their door steps. For the development of country and the betterment of rural people in the remote area, we are using information technology to collect information from various online sources and thereby making farmers aware of recent technologies.

  11. A Heuristic Approach for Web-Service Discovery and Selection

    OpenAIRE

    Achraf Karray; Rym Teyeb; Maher Ben Jemaa

    2013-01-01

    In today's businesses, service-oriented architectures represent the main paradigm for IT infrastructures. Indeed, the emergence of Internet made it possible to set up an exploitable environment to distribute applications on a large scale, and this, by adapting the notion of "service". With the integration of this paradigm in Business to Business Domain (B2B), the number of web services becomes very significant. Due to this increase, the discovery and selection of web services meeting customer...

  12. The Management of Law Firms Using Business Process Management, Document Management and Web Services Integration

    Directory of Open Access Journals (Sweden)

    Roxana Maria Petculet

    2012-03-01

    Full Text Available The aim of this paper is to present the technical solution implemented in the present context for the management of law firms. The informational system consists of the automation of business processes using a BPM engine and electronic archiving using a DMS. The communication between the two modules is made by invoking web services. The whole system integrates modules like: project management, contract management, invoice management, collection, CRM, reporting.

  13. Investigating Soap and Xml Technologies in Web Service

    OpenAIRE

    Mehdi Zekriyapanah Gashti

    2012-01-01

    In this paper, Investigating SOAP and XML technologies in web service is studied. The reason for usingXML technology to transmit data and also the need for application of existing communicative structure inSOAP technology in web pages with WSDL technology are investigated uniquely. And also the need forsearchable address giving for web service which is available in UDDI technology and the advantages ofusing it are explained for programmers.

  14. VxBPEL : Supporting variability for Web services in BPEL

    NARCIS (Netherlands)

    Koning, Michiel; Sun, Chang-ai; Sinnema, Marco; Avgeriou, Paris

    2009-01-01

    Web services provide a way to facilitate the business integration over the Internet. Flexibility is an important and desirable property of Web service-based systems due to dynamic business environments. The flexibility can be provided or addressed by incorporating variability into a system. In this

  15. Research on the E-Learning Application of Web Service

    Institute of Scientific and Technical Information of China (English)

    FEI Chun; TANG Xue-fei

    2005-01-01

    This thesis introduces the e-learning system and Web Service technology. Then, it proposes how to apply Web Service technology to the e-learning system, and how to improve systematic flexibility and dependability. Finally it provides the basic framework of the system and a simple realization according to related specification.

  16. Web 2.0 Strategy in Libraries and Information Services

    Science.gov (United States)

    Byrne, Alex

    2008-01-01

    Web 2.0 challenges libraries to change from their predominantly centralised service models with integrated library management systems at the hub. Implementation of Web 2.0 technologies and the accompanying attitudinal shifts will demand reconceptualisation of the nature of library and information service around a dynamic, ever changing, networked,…

  17. A framework for automated service composition in collaborative networks

    NARCIS (Netherlands)

    Afsarmanesh, H.; Sargolzaei, M.; Shadi, M.

    2012-01-01

    This paper proposes a novel framework for automated software service composition that can significantly support and enhance collaboration among enterprises in service provision industry, such as in tourism insurance and e-commerce collaborative networks (CNs). Our proposed framework is founded on se

  18. Development of a Dynamic Web Mapping Service for Vegetation Productivity Using Earth Observation and in situ Sensors in a Sensor Web Based Approach

    Directory of Open Access Journals (Sweden)

    Sytze de Bruin

    2009-03-01

    Full Text Available This paper describes the development of a sensor web based approach which combines earth observation and in situ sensor data to derive typical information offered by a dynamic web mapping service (WMS. A prototype has been developed which provides daily maps of vegetation productivity for the Netherlands with a spatial resolution of 250 m. Daily available MODIS surface reflectance products and meteorological parameters obtained through a Sensor Observation Service (SOS were used as input for a vegetation productivity model. This paper presents the vegetation productivity model, the sensor data sources and the implementation of the automated processing facility. Finally, an evaluation is made of the opportunities and limitations of sensor web based approaches for the development of web services which combine both satellite and in situ sensor sources.

  19. Development of a Dynamic Web Mapping Service for Vegetation Productivity Using Earth Observation and in situ Sensors in a Sensor Web Based Approach.

    Science.gov (United States)

    Kooistra, Lammert; Bergsma, Aldo; Chuma, Beatus; de Bruin, Sytze

    2009-01-01

    This paper describes the development of a sensor web based approach which combines earth observation and in situ sensor data to derive typical information offered by a dynamic web mapping service (WMS). A prototype has been developed which provides daily maps of vegetation productivity for the Netherlands with a spatial resolution of 250 m. Daily available MODIS surface reflectance products and meteorological parameters obtained through a Sensor Observation Service (SOS) were used as input for a vegetation productivity model. This paper presents the vegetation productivity model, the sensor data sources and the implementation of the automated processing facility. Finally, an evaluation is made of the opportunities and limitations of sensor web based approaches for the development of web services which combine both satellite and in situ sensor sources.

  20. Test Cases Reduction and Selection Optimization in Testing Web Services

    Directory of Open Access Journals (Sweden)

    Izzat Alsmadi

    2012-10-01

    Full Text Available Software testing in web services environment faces different challenges in comparison with testing in traditional software environments. Regression testing activities are triggered based on software changes or evolutions. In web services, evolution is not a choice for service clients. They have always to use the current updated version of the software. In addition test execution or invocation is expensive in web services and hence providing algorithms to optimize test case generation and execution is vital. In this environment, we proposed several approach for test cases’ selection in web services’ regression testing. Testing in this new environment should evolve to be included part of the service contract. Service providers should provide data or usage sessions that can help service clients reduce testing expenses through optimizing the selected and executed test cases.

  1. Optimizing QoS-Aware Semantic Web Service Composition

    Science.gov (United States)

    Lécué, Freddy

    Ranking and optimization of web service compositions are some of the most interesting challenges at present. Since web services can be enhanced with formal semantic descriptions, forming the "semantic web services", it becomes conceivable to exploit the quality of semantic links between services (of any composition) as one of the optimization criteria. For this we propose to use the semantic similarities between output and input parameters of web services. Coupling this with other criteria such as quality of service (QoS) allow us to rank and optimize compositions achieving the same goal. Here we suggest an innovative and extensible optimization model designed to balance semantic fit (or functional quality) with non-functional QoS metrics. To allow the use of this model in the context of a large number of services as foreseen by the strategic EC-funded project SOA4All we propose and test the use of Genetic Algorithms.

  2. Web Services-Based Access to Local Clinical Trial Databases: A Standards Initiative of the Association of American Cancer Institutes

    OpenAIRE

    Stahl, Douglas C.; Evans, Richard M.; Afrin, Lawrence B.; DeTeresa, Richard M.; Ko, Dave; Mitchell, Kevin

    2003-01-01

    Electronic discovery of the clinical trials being performed at a specific research center is a challenging task, which presently requires manual review of the center’s locally maintained databases or web pages of protocol listings. Near real-time automated discovery of available trials would increase the efficiency and effectiveness of clinical trial searching, and would facilitate the development of new services for information providers and consumers. Automated discovery efforts to date hav...

  3. Web Service 技术研究

    Institute of Scientific and Technical Information of China (English)

    孙俊丽

    2016-01-01

    文章基于Web Service技术,首先介绍了发展背景,概述了Web Service的体系结构,分析了Web Service的工作原理,最后总结了Web Service的优点,为今后深入发展奠定了基础。

  4. Enhancing the AliEn Web Service Authentication

    Science.gov (United States)

    Zhu, Jianlin; Saiz, Pablo; Carminati, Federico; Betev, Latchezar; Zhou, Daicui; Mendez Lorenzo, Patricia; Grigoras, Alina Gabriela; Grigoras, Costin; Furano, Fabrizio; Schreiner, Steffen; Vladimirovna Datskova, Olga; Sankar Banerjee, Subho; Zhang, Guoping

    2011-12-01

    Web Services are an XML based technology that allow applications to communicate with each other across disparate systems. Web Services are becoming the de facto standard that enable inter operability between heterogeneous processes and systems. AliEn2 is a grid environment based on web services. The AliEn2 services can be divided in three categories: Central services, deployed once per organization; Site services, deployed on each of the participating centers; Job Agents running on the worker nodes automatically. A security model to protect these services is essential for the whole system. Current implementations of web server, such as Apache, are not suitable to be used within the grid environment. Apache with the mod_ssl and OpenSSL only supports the X.509 certificates. But in the grid environment, the common credential is the proxy certificate for the purpose of providing restricted proxy and delegation. An Authentication framework was taken for AliEn2 web services to add the ability to accept X.509 certificates and proxy certificates from client-side to Apache Web Server. The authentication framework could also allow the generation of access control policies to limit access to the AliEn2 web services.

  5. Analysis Tool Web Services from the EMBL-EBI.

    Science.gov (United States)

    McWilliam, Hamish; Li, Weizhong; Uludag, Mahmut; Squizzato, Silvano; Park, Young Mi; Buso, Nicola; Cowley, Andrew Peter; Lopez, Rodrigo

    2013-07-01

    Since 2004 the European Bioinformatics Institute (EMBL-EBI) has provided access to a wide range of databases and analysis tools via Web Services interfaces. This comprises services to search across the databases available from the EMBL-EBI and to explore the network of cross-references present in the data (e.g. EB-eye), services to retrieve entry data in various data formats and to access the data in specific fields (e.g. dbfetch), and analysis tool services, for example, sequence similarity search (e.g. FASTA and NCBI BLAST), multiple sequence alignment (e.g. Clustal Omega and MUSCLE), pairwise sequence alignment and protein functional analysis (e.g. InterProScan and Phobius). The REST/SOAP Web Services (http://www.ebi.ac.uk/Tools/webservices/) interfaces to these databases and tools allow their integration into other tools, applications, web sites, pipeline processes and analytical workflows. To get users started using the Web Services, sample clients are provided covering a range of programming languages and popular Web Service tool kits, and a brief guide to Web Services technologies, including a set of tutorials, is available for those wishing to learn more and develop their own clients. Users of the Web Services are informed of improvements and updates via a range of methods.

  6. Measuring Security of Web Services in Requirement Engineering Phase

    Directory of Open Access Journals (Sweden)

    Davoud Mougouei

    2015-05-01

    Full Text Available Addressing security in early stages of web service development has always been a major engineering trend. However, to assure security of web services it is required to perform security evaluation in a rigorous and tangible manner. The results of such an evaluation if performed in early stages of the development process can be used to improve the quality of the target web service. On the other hand, it is impossible to remove all of the security faults during the security analysis of web services. As a result, absolute security is never possible to achieve and a security failure may occur during the execution of web service. To avoid security failures, a measurable level of fault tolerance is required to be achieved through partial satisfaction of security goals. Thus any proposed measurement technique must care for this partiality. Even though there are some approaches toward assessing the security of web services but still there is no precise model for evaluation of security goal satisfaction specifically during the requirement engineering phase. This paper introduces a Security Measurement Model (SMM for evaluating the Degree of Security (DS in security requirements of web services by taking into consideration partial satisfaction of security goals. The proposed model evaluates overall security of the target service through measuring the security in Security Requirement Model (SRM of the service. The proposed SMM also takes into account cost, technical ability, impact and flexibility as the key features of security evaluation.

  7. Informatics in radiology: automated Web-based graphical dashboard for radiology operational business intelligence.

    Science.gov (United States)

    Nagy, Paul G; Warnock, Max J; Daly, Mark; Toland, Christopher; Meenan, Christopher D; Mezrich, Reuben S

    2009-11-01

    Radiology departments today are faced with many challenges to improve operational efficiency, performance, and quality. Many organizations rely on antiquated, paper-based methods to review their historical performance and understand their operations. With increased workloads, geographically dispersed image acquisition and reading sites, and rapidly changing technologies, this approach is increasingly untenable. A Web-based dashboard was constructed to automate the extraction, processing, and display of indicators and thereby provide useful and current data for twice-monthly departmental operational meetings. The feasibility of extracting specific metrics from clinical information systems was evaluated as part of a longer-term effort to build a radiology business intelligence architecture. Operational data were extracted from clinical information systems and stored in a centralized data warehouse. Higher-level analytics were performed on the centralized data, a process that generated indicators in a dynamic Web-based graphical environment that proved valuable in discussion and root cause analysis. Results aggregated over a 24-month period since implementation suggest that this operational business intelligence reporting system has provided significant data for driving more effective management decisions to improve productivity, performance, and quality of service in the department.

  8. Enhancing service discovery using cat swarm optimisation based web service clustering

    Directory of Open Access Journals (Sweden)

    Sunaina Kotekar

    2016-09-01

    Full Text Available Web service discovery is a critical task in service oriented application development. Due to extensive proliferation in the number of available services, it is challenging to obtain all the relevant services available for a given task. For the retrieval of most relevant Web services, a user would have to use those service-specific terms that best describe and match the natural language documentation contained within a service description. This process can be time intensive, due to functional diversity of available services in a repository. Domain specific clustering of Web Services based on the similarities of their functionalities would greatly boost the ability of a Web service search engine to retrieve the most relevant service. In this paper, we propose a novel technique to cluster service documents into functionally similar service groups using the Cat Swarm Optimisation Algorithm. We present experimental results that show that the proposed technique was effective and enhanced the process of service discovery.

  9. Server Interface Descriptions for Automated Testing of JavaScript Web Applications

    DEFF Research Database (Denmark)

    Jensen, Casper Svenning; Møller, Anders; Su, Zhendong

    2013-01-01

    Automated testing of JavaScript web applications is complicated by the communication with servers. Specifically, it is difficult to test the JavaScript code in isolation from the server code and database contents. We present a practical solution to this problem. First, we demonstrate that formal...... server interface descriptions are useful in automated testing of JavaScript web applications for separating the concerns of the client and the server. Second, to support the construction of server interface descriptions for existing applications, we introduce an effective inference technique that learns...... communication patterns from sample data. By incorporating interface descriptions into the testing tool Artemis, our experimental results show that we increase the level of automation for high-coverage testing on a collection of JavaScript web applications that exchange JSON data between the clients and servers...

  10. 基于HTML5、Ajax和Web Service的WebGIS研究%Research on WebGIS based on HTML5, Ajax and Web Service

    Institute of Scientific and Technical Information of China (English)

    徐卓揆

    2012-01-01

    为改变WebGIS中各种浏览嚣缺乏支持矢量数据的标准方法、数据互操作能力有限和空间分析功能较弱的现状,基于新一代HTML5标准、Ajax和Web Service技术,本文提出了开放式WebGIS模型,并开发了实验平台.该平台支持数据共享的Web Services和OGC新规范Web Processing Service,改善了现有WebGIS缺陷,提高了WebGIS的互操作及空间分析能力.%To amend the situation, including no standard for various browsers to support GIS vector data, limitation of GIS data interoperation and weak function of spatial analysis in WebGIS, based on new HTML5 atandard, Ajax and Web Service technologies,the paper put forward an open model of WebGIS, and an experimental platform was developed In this platform, Web Services for data interoperation and new OGC standard Web Processing Service were supported, the platform obviously amended the defects of WebGIS,and improved the abilities of interoperation and spatial analysis with WebGIS.

  11. Automation and technologization of the postal services

    Directory of Open Access Journals (Sweden)

    Caius Lăzărescu

    2012-01-01

    Full Text Available The development of the means of communication, the loss of monopoly over the postal services, liberalization of the services, creation of postal markets, appearance of new operators of postal services and implicitly of the competition, as well as the change of the status of the universal service providers in trading companies, impose modern technological equipping that would ensure the provision of postal services at new standards. For a proper technologization a constant study of the market is imposed in order to trace the strong points and an organization of the network that would allow a fluidity of the operations so that all malfunctions are eliminated. If the postal services arose from the need to communicate, their evolution and the current status of trading company confirm the fact that their maintenance and development also meet the economic need. The postal services provider is obliged to uniformly secure the universal service as well as the other services and the duty to perform economic activities in two different social-economic environments, the rural environment and the urban environment. The means of communication, at first, provided a simple communication service; later their evolution had a whole new purpose, i.e. to provide more complex communication services, and currently, in the internet era and modern technology a possibility to provide service packages arises.

  12. Graph based E-Government web service composition

    CERN Document Server

    Elmaghraoui, Hajar; Chiadmi, Dalila; Benhlima, Laila

    2011-01-01

    Nowadays, e-government has emerged as a government policy to improve the quality and efficiency of public administrations. By exploiting the potential of new information and communication technologies, government agencies are providing a wide spectrum of online services. These services are composed of several web services that comply with well defined processes. One of the big challenges is the need to optimize the composition of the elementary web services. In this paper, we present a solution for optimizing the computation effort in web service composition. Our method is based on Graph Theory. We model the semantic relationship between the involved web services through a directed graph. Then, we compute all shortest paths using for the first time, an extended version of the Floyd-Warshall algorithm.

  13. 用SOAP Toolkit开发Web Service

    Institute of Scientific and Technical Information of China (English)

    姚彤

    2003-01-01

    1.Web Service简介 在目前的分布式的应用开发中,Web Service(Web服务,本文将统一采用Web Service,而不使用Web服务这个词)已经成为一个热点。Web Service简单的说就是部署在Web上的对象/组件,具有良好的封装性,对外提供定义良好的接口供

  14. Building Assessment Web Service from Question Type Learning Objects

    OpenAIRE

    Reklaitis, Vytautas; Baniulis, Kazys; Aukstakalnis, Nerijus

    2004-01-01

    In this paper we discuss the TestTool system as an established testing system model, the one that is being used in real educational settings and supports self-assessment as well as testing learning practices. We then elaborate how this learning object-based system is being re-engineered and extended within the context of Web service oriented architecture. Testing Web service implementation along with considerations regarding how e-learning services from distributed Learning Objects could be c...

  15. An Environment for Flexible Advanced Compensations of Web Service Transactions

    DEFF Research Database (Denmark)

    Schaefer, Michael; Dolog, Peter; Nejdl, Wolfgang

    2008-01-01

    Business to business integration has recently been performed by employing Web service environments. Moreover, such environments are being provided by major players on the technology markets. Those environments are based on open specifications for transaction coordination. When a failure...... recovery principles. We extend the existing Web service transaction coordination architecture and infrastructure in order to support flexible compensation operations. We use a contract-based approach, which allows the specification of permitted compensations at runtime. We introduce abstract service...

  16. Rule-based semantic web services matching strategy

    Science.gov (United States)

    Fan, Hong; Wang, Zhihua

    2011-12-01

    With the development of Web services technology, the number of service increases rapidly, and it becomes a challenge task that how to efficiently discovery the services that exactly match the user's requirements from the large scale of services library. Many semantic Web services discovery technologies proposed by the recent literatures only focus on the keyword-based or primary semantic based service's matching. This paper studies the rules and rule reasoning based service matching algorithm in the background of large scale services library. Firstly, the formal descriptions of semantic web services and service matching is presented. The services' matching are divided into four levels: Exact, Plugin, Subsume and Fail and their formal descriptions are also presented. Then, the service matching is regarded as rule-based reasoning issues. A set of match rules are firstly given and the related services set is retrieved from services ontology base through rule-based reasoning, and their matching levels are determined by distinguishing the relationships between service's I/O and user's request I/O. Finally, the experiment based on two services sets show that the proposed services matching strategy can easily implement the smart service discovery and obtains the high service discovery efficiency in comparison with the traditional global traversal strategy.

  17. Spatial Data Web Services Pricing Model Infrastructure

    Science.gov (United States)

    Ozmus, L.; Erkek, B.; Colak, S.; Cankurt, I.; Bakıcı, S.

    2013-08-01

    The General Directorate of Land Registry and Cadastre (TKGM) which is the leader in the field of cartography largely continues its missions which are; to keep and update land registry and cadastre system of the country under the responsibility of the treasure, to perform transactions related to real estate and to establish Turkish national spatial information system. TKGM a public agency has completed many projects. Such as; Continuously Operating GPS Reference Stations (TUSAGA-Aktif), Geo-Metadata Portal (HBB), Orthophoto-Base Map Production and web services, Completion of Initial Cadastre, Cadastral Renovation Project (TKMP), Land Registry and Cadastre Information System (TAKBIS), Turkish National Spatial Data Infrastructure Project (TNSDI), Ottoman Land Registry Archive Information System (TARBIS). TKGM provides updated map and map information to not only public institutions but also to related society in the name of social responsibility principals. Turkish National Spatial Data Infrastructure activities have been started by the motivation of Circular No. 2003/48 which was declared by Turkish Prime Ministry in 2003 within the context of e-Transformation of Turkey Short-term Action Plan. Action No. 47 in the mentioned action plan implies that "A Feasibility Study shall be made in order to establish the Turkish National Spatial Data Infrastructure" whose responsibility has been given to General Directorate of Land Registry and Cadastre. Feasibility report of NSDI has been completed in 10th of December 2010. After decision of Steering Committee, feasibility report has been send to Development Bank (old name State Planning Organization) for further evaluation. There are two main arrangements with related this project (feasibility report).First; Now there is only one Ministry which is Ministry of Environment and Urbanism responsible for establishment, operating and all national level activities of NSDI. And Second arrangement is related to institutional Level. The

  18. Integrating GIS Web services based on mediating architecture

    Institute of Scientific and Technical Information of China (English)

    CHEN Guan-hua; HAN Liang; MA Xiu-jun; XIE Kun-qing; CHEN Zhuo

    2004-01-01

    The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.

  19. Web service reputation evaluation based on QoS measurement.

    Science.gov (United States)

    Zhang, Haiteng; Shao, Zhiqing; Zheng, Hong; Zhai, Jie

    2014-01-01

    In the early service transactions, quality of service (QoS) information was published by service provider which was not always true and credible. For better verification the trust of the QoS information was provided by the Web service. In this paper, the factual QoS running data are collected by our WS-QoS measurement tool; based on these objectivity data, an algorithm compares the difference of the offered and measured quality data of the service and gives the similarity, and then a reputation evaluation method computes the reputation level of the Web service based on the similarity. The initial implementation and experiment with three Web services' example show that this approach is feasible and these values can act as the references for subsequent consumers to select the service.

  20. Towards structural Web Services matching based on Kernel methods

    Institute of Scientific and Technical Information of China (English)

    NAN Kai; YU Jianjun; SU Hao; GUO Shengmin; ZHANG Hui; XU Ke

    2007-01-01

    This paper describes a kernel methods based Web Services matching mechanism for Web Services discovery and integration.The matching mechanism tries to exploit the latent semantics by the structure of Web Services.In this paper,Web Services are schemed by WSDL(Web Services Description Language)as tree-structured XML documents,and their matching degree is calculated by our novel algorithm designed for loosely tree matching against the traditional methods.In order to achieve the task,we bring forward the concept of path subsequence to model WSDL documents in the vector space.Then,an advanced n-spectrum kernel function is defined,so that the similarity of two WSDL documents can be drawn by implementing the kernel function in the space.Using textual similarity and n-spectrum kernel values as features of low-level and mid-level,we build up a model to estimate the functional similarity between Web Services,whose parameters are learned by a ranking-SVM.Finally,a set of experiments were designed to verify the model,and the results showed that several metrics for the retrieval of Web Services have been improved by our approach.

  1. The impact of web services at the IRIS DMC

    Science.gov (United States)

    Weekly, R. T.; Trabant, C. M.; Ahern, T. K.; Stults, M.; Suleiman, Y. Y.; Van Fossen, M.; Weertman, B.

    2015-12-01

    The IRIS Data Management Center (DMC) has served the seismological community for nearly 25 years. In that time we have offered data and information from our archive using a variety of mechanisms ranging from email-based to desktop applications to web applications and web services. Of these, web services have quickly become the primary method for data extraction at the DMC. In 2011, the first full year of operation, web services accounted for over 40% of the data shipped from the DMC. In 2014, over ~450 TB of data was delivered directly to users through web services, representing nearly 70% of all shipments from the DMC that year. In addition to handling requests directly from users, the DMC switched all data extraction methods to use web services in 2014. On average the DMC now handles between 10 and 20 million requests per day submitted to web service interfaces. The rapid adoption of web services is attributed to the many advantages they bring. For users, they provide on-demand data using an interface technology, HTTP, that is widely supported in nearly every computing environment and language. These characteristics, combined with human-readable documentation and existing tools make integration of data access into existing workflows relatively easy. For the DMC, the web services provide an abstraction layer to internal repositories allowing for concentrated optimization of extraction workflow and easier evolution of those repositories. Lending further support to DMC's push in this direction, the core web services for station metadata, timeseries data and event parameters were adopted as standards by the International Federation of Digital Seismograph Networks (FDSN). We expect to continue enhancing existing services and building new capabilities for this platform. For example, the DMC has created a federation system and tools allowing researchers to discover and collect seismic data from data centers running the FDSN-standardized services. A future capability

  2. 基于.NET 的 Web Service 应用规划设计%Design of Web Service application programming based on.NET

    Institute of Scientific and Technical Information of China (English)

    范文广; 黄存东

    2015-01-01

    Web Service 的产生是为了解决跨平台和语言共享数据的问题。 Web Service 构建块解决了发现 Web Service及与 Web Service 通信的问题。在 Web Service 创建过程中,可以根据不同用户的喜好,选择利用记事本和 Visual Studio.NET。%The generation of Web Service is to address the issue of sharing data across platforms and language;Web Service building blocks, solve problems of finding Web Service and Web Service communication. Notepad and Visual Studio.NET are available for different users preferences in Web Service creation process.

  3. Online Test Automation for new Generation of Silverlight Web Applications

    OpenAIRE

    Appasami Govindasamy; Suresh Joseph. K; Annadurai P.

    2011-01-01

    New Interactive, attractive and device independent web application’s Graphical User Interfaces (GUI) are developed by new technologies like Silverlight and Moonlight. Silverlight is Microsoft's cross platform runtime and development technology for running Web based multimedia applications in windows platform. Moonlight is an open-source implementation of the Silverlight development platform for Linux and other operating systems. Manufacturing Execution systems (MES) is a framework which tries...

  4. Mobile Police Information System Based on Web Services

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The demand for communications anywhere, anytime, and on any device without recording the date is growing with the development of modern information technologies. Current wireless communications enable people to freely exchange information, while web services provide loosely-coupled, language-neutral, and platform-independent ways of linking applications within organizations, across enterprises, and across the Internet. This paper describes a mobile information system for police service, which integrates wireless communication technologies and web service technologies. The system satisfies the special demands of police information systems, such as security and interoperability. Policemen in the system can use various kinds of mobile terminals, such as mobile phones, tablet PCs, personal digital assistants, and laptops equipped with wireless LAN or GPRS to access data in the central database. The system is based on web services with a secure web service architecture and simple object access protocol message passing.

  5. Storage Viability and Optimization Web Service

    Energy Technology Data Exchange (ETDEWEB)

    Stadler, Michael; Marnay, Christ; Lai, Judy; Siddiqui, Afzal; Limpaitoon, Tanachai; Phan, Trucy; Megel, Olivier; Chang, Jessica; DeForest, Nicholas

    2010-10-11

    Non-residential sectors offer many promising applications for electrical storage (batteries) and photovoltaics (PVs). However, choosing and operating storage under complex tariff structures poses a daunting technical and economic problem that may discourage potential customers and result in lost carbon and economic savings. Equipment vendors are unlikely to provide adequate environmental analysis or unbiased economic results to potential clients, and are even less likely to completely describe the robustness of choices in the face of changing fuel prices and tariffs. Given these considerations, researchers at Lawrence Berkeley National Laboratory (LBNL) have designed the Storage Viability and Optimization Web Service (SVOW): a tool that helps building owners, operators and managers to decide if storage technologies and PVs merit deeper analysis. SVOW is an open access, web-based energy storage and PV analysis calculator, accessible by secure remote login. Upon first login, the user sees an overview of the parameters: load profile, tariff, technologies, and solar radiation location. Each parameter has a pull-down list of possible predefined inputs and users may upload their own as necessary. Since the non-residential sectors encompass a broad range of facilities with fundamentally different characteristics, the tool starts by asking the users to select a load profile from a limited cohort group of example facilities. The example facilities are categorized according to their North American Industry Classification System (NAICS) code. After the load profile selection, users select a predefined tariff or use the widget to create their own. The technologies and solar radiation menus operate in a similar fashion. After these four parameters have been inputted, the users have to select an optimization setting as well as an optimization objective. The analytic engine of SVOW is LBNL?s Distributed Energy Resources Customer Adoption Model (DER-CAM), which is a mixed

  6. Beginning Amazon Web Services with Node.js

    CERN Document Server

    Shackelford, Adam

    2015-01-01

    Beginning Amazon Web Services with Node.js teaches any novice Node.js developer to configure, deploy, and maintain scalable small to large scale Node.js applications in Amazon Web Services. Hosting a Node.js application in a production environment usually means turning to PaaS hosting, but this approach brings problems. Deploying Node.js directly to AWS solves the problems you encounter in these situations, enabling you to cut out the middle man. You will begin with a basic RESTful web service in Node.js, using the popular Express.js framework, pre-built and ready to run in your local env

  7. Mining biological pathways using WikiPathways web services.

    Directory of Open Access Journals (Sweden)

    Thomas Kelder

    Full Text Available WikiPathways is a platform for creating, updating, and sharing biological pathways [1]. Pathways can be edited and downloaded using the wiki-style website. Here we present a SOAP web service that provides programmatic access to WikiPathways that is complementary to the website. We describe the functionality that this web service offers and discuss several use cases in detail. Exposing WikiPathways through a web service opens up new ways of utilizing pathway information and assisting the community curation process.

  8. Mining biological pathways using WikiPathways web services.

    Science.gov (United States)

    Kelder, Thomas; Pico, Alexander R; Hanspers, Kristina; van Iersel, Martijn P; Evelo, Chris; Conklin, Bruce R

    2009-07-30

    WikiPathways is a platform for creating, updating, and sharing biological pathways [1]. Pathways can be edited and downloaded using the wiki-style website. Here we present a SOAP web service that provides programmatic access to WikiPathways that is complementary to the website. We describe the functionality that this web service offers and discuss several use cases in detail. Exposing WikiPathways through a web service opens up new ways of utilizing pathway information and assisting the community curation process.

  9. Architecting Secure Web Services using Model Driven Agile Modeling

    Directory of Open Access Journals (Sweden)

    Dr.B.Padmaja Rani,

    2010-09-01

    Full Text Available The importance of the software security has been profound, since most attacks to software systems are based on vulnerabilities caused by poorly designed and developed software. Design flaws account for fifty percent of security problems and risk analysis plays essential role in solid security problems. Service Web Services are an integral part of next generation Web applications. The development and use of these services is growing at an incredible rate, and so too security issues surrounding them. If the history of inter-application communication repeats itself, the ease with which web services architectures publish information about applications across thenetwork is only going to result in more application hacking. At the very least, it’s going to put an even greater burden on web architects and developers to design and write secure code. Developing specification like WS-Security should be leveraged as secure maturity happens over firewalls. In this paper, we want to discuss security architectures design patterns for Service Oriented Web Services. Finally, we validated this by implementing a case study of a Service Oriented Web Services application StockTrader Security using WS-Security and WS-Secure Conversation.

  10. 基于XML的Web Service技术%The Web Service Technology Based on XML

    Institute of Scientific and Technical Information of China (English)

    隋欣

    2013-01-01

    The new generation of markup language-XML was created to solve the Web related data. It plays an important role all over the Service functions of Web Service system. This paper expounds the foundational value of XML in Web Service system from three aspects:the XML technical characteristics,its role in Web services, Web Service principle and the realization of the technology platform system.%为解决Web相关数据处理问题而诞生的新一代置标语言XML,在Web Service体系各服务功能实现中无处不在地发挥着重要的作用。本文从XML技术特点、在Web服务中的作用及Web Service的原理和技术平台体系的实现三个方面阐述了XML在Web Service体系中的基石价值。

  11. An Authentication system of Web Services Based on Web Server Log Analysis

    Directory of Open Access Journals (Sweden)

    R. Joseph Manoj

    2014-01-01

    Full Text Available Authentication is a method which validates users' identity prior to permitting them to access the web services. To enhance the security of web services, providers follow varieties of authentication methods to restrict malicious users from accessing the services. This paper proposes a new authentication method which claims user’s identity by analyzing web server log files which includes the details of requesting user’s IP address, username, password, date and time of request, status code, URL etc., and checks IP address spoofing using ingress packet filtering method. This paper also analyses the resultant data and performance of the proposed work.

  12. Automatic web services classification based on rough set theory

    Institute of Scientific and Technical Information of China (English)

    陈立; 张英; 宋自林; 苗壮

    2013-01-01

    With development of web services technology, the number of existing services in the internet is growing day by day. In order to achieve automatic and accurate services classification which can be beneficial for service related tasks, a rough set theory based method for services classification was proposed. First, the services descriptions were preprocessed and represented as vectors. Elicited by the discernibility matrices based attribute reduction in rough set theory and taking into account the characteristic of decision table of services classification, a method based on continuous discernibility matrices was proposed for dimensionality reduction. And finally, services classification was processed automatically. Through the experiment, the proposed method for services classification achieves approving classification result in all five testing categories. The experiment result shows that the proposed method is accurate and could be used in practical web services classification.

  13. 基于WebService的WebGIS性能的优化%The Optimization on the Performance of WebGIS Based on Web Service

    Institute of Scientific and Technical Information of China (English)

    韩双旺

    2011-01-01

    由于GIS中不但涉及属性数据,而且还涉及地理空间数据,因此数据量相对庞大,所以在设计和实现WebGIS时。必须考虑其性能问题.为了更高效地实现基于WebService的WebGIS的相关功能,有必要对其性能进行优化,这可通过增大Web Service颗粒度,不使用XML作为WebGIS系统内部的接口,压缩SOAP,通过异步访问服务器端Web Service中的Web方法,优化数据库,使用客户端和服务器端缓存等一系列优化措施来加快数据的访问速度,减轻网络传输负载,提高基于Web Service的WebGIS性能.%It not only includes attribute data in the CIS, but also includes the geo-spatial data, arelatively large amount of data, so we must consider the performance issues in the design and implementation of WebGIS. In order to more efficiently" implement the relative functions of a WebGIS based on Web Service, it is necessary to optimize the performance, which can increase the particle size of Web Service, do not use XML as the WebGIS interface within the system; compressed SOAP, an asynchronous Access Web method in Web Service of server-side, optimizing the database, using the client and server side caching and a series of optimization measures to speed up data access speed and reduce network traffic loads and improve the performance of WebGIS based on Web Service.

  14. Going, going, still there: using the WebCite service to permanently archive cited web pages.

    Science.gov (United States)

    Eysenbach, Gunther; Trudel, Mathieu

    2005-12-30

    Scholars are increasingly citing electronic "web references" which are not preserved in libraries or full text archives. WebCite is a new standard for citing web references. To "webcite" a document involves archiving the cited Web page through www.webcitation.org and citing the WebCite permalink instead of (or in addition to) the unstable live Web page. This journal has amended its "instructions for authors" accordingly, asking authors to archive cited Web pages before submitting a manuscript. Almost 200 other journals are already using the system. We discuss the rationale for WebCite, its technology, and how scholars, editors, and publishers can benefit from the service. Citing scholars initiate an archiving process of all cited Web references, ideally before they submit a manuscript. Authors of online documents and websites which are expected to be cited by others can ensure that their work is permanently available by creating an archived copy using WebCite and providing the citation information including the WebCite link on their Web document(s). Editors should ask their authors to cache all cited Web addresses (Uniform Resource Locators, or URLs) "prospectively" before submitting their manuscripts to their journal. Editors and publishers should also instruct their copyeditors to cache cited Web material if the author has not done so already. Finally, WebCite can process publisher submitted "citing articles" (submitted for example as eXtensible Markup Language [XML] documents) to automatically archive all cited Web pages shortly before or on publication. Finally, WebCite can act as a focussed crawler, caching retrospectively references of already published articles. Copyright issues are addressed by honouring respective Internet standards (robot exclusion files, no-cache and no-archive tags). Long-term preservation is ensured by agreements with libraries and digital preservation organizations. The resulting WebCite Index may also have applications for research

  15. Flexible Generation of Pervasive Web Services using OSGi Declarative Services and OWL Ontologies

    DEFF Research Database (Denmark)

    Hansen, Klaus Marius; Zhang, Weishan; Fernandes, Joao

    2008-01-01

    There is a growing trend to deploy web services in pervasive computing environments. Implementing web services on networked, embedded devices leads to a set of challenges, including productivity of development, efficiency of web services, and handling of variability and dependencies of hardware...... and software platforms. To address these challenges, we developed a web service compiler called Limbo, in which Web Ontology Language (OWL) ontologies are used to make the Limbo compiler aware of its compilation context such as device hardware and software details, platform dependencies, and resource....../power consumption. The ontologies are used to configure Limbo for generating resource-efficient web service code. The architecture of Limbo follows the Blackboard architectural style and Limbo is implemented using the OSGi Declarative Services component model. The component model provides high flexibility...

  16. Service Learning and Building Community with the World Wide Web

    Science.gov (United States)

    Longan, Michael W.

    2007-01-01

    The geography education literature touts the World Wide Web (Web) as a revolutionary educational tool, yet most accounts ignore its uses for public communication and creative expression. This article argues that students can be producers of content that is of service to local audiences. Drawing inspiration from the community networking movement,…

  17. A Web Service and Interface for Remote Electronic Device Characterization

    Science.gov (United States)

    Dutta, S.; Prakash, S.; Estrada, D.; Pop, E.

    2011-01-01

    A lightweight Web Service and a Web site interface have been developed, which enable remote measurements of electronic devices as a "virtual laboratory" for undergraduate engineering classes. Using standard browsers without additional plugins (such as Internet Explorer, Firefox, or even Safari on an iPhone), remote users can control a Keithley…

  18. Communicating data quality through Web Map Services

    Science.gov (United States)

    Blower, Jon; Roberts, Charles; Griffiths, Guy; Lewis, Jane; Yang, Kevin

    2013-04-01

    The sharing and visualization of environmental data through spatial data infrastructures is becoming increasingly common. However, information about the quality of data is frequently unavailable or presented in an inconsistent fashion. ("Data quality" is a phrase with many possible meanings but here we define it as "fitness for purpose" - therefore different users have different notions of what constitutes a "high quality" dataset.) The GeoViQua project (www.geoviqua.org) is developing means for eliciting, formatting, discovering and visualizing quality information using ISO and Open Geospatial Consortium (OGC) standards. Here we describe one aspect of the innovations of the GeoViQua project. In this presentation, we shall demonstrate new developments in using Web Map Services to communicate data quality at the level of datasets, variables and individual samples. We shall outline a new draft set of conventions (known as "WMS-Q"), which describe a set of rules for using WMS to convey quality information (OGC draft Engineering Report 12-160). We shall demonstrate these conventions through new prototype software, based upon the widely-used ncWMS software, that applies these rules to enable the visualization of uncertainties in raster data such as satellite products and the results of numerical simulations. Many conceptual and practical issues have arisen from these experiments. How can source data be formatted so that a WMS implementation can detect the semantic links between variables (e.g. the links between a mean field and its variance)? The visualization of uncertainty can be a complex task - how can we provide users with the power and flexibility to choose an optimal strategy? How can we maintain compatibility (as far as possible) with existing WMS clients? We explore these questions with reference to existing standards and approaches, including UncertML, NetCDF-U and Styled Layer Descriptors.

  19. Fairness as a QoS Measure for Web Services

    CERN Document Server

    Bistarelli, Stefano; 10.4204/EPTCS.2.9

    2009-01-01

    Service Oriented Architectures (SOAs) are component-based architectures, characterized by reusability, modularization and composition, usually offered by HTTP (web services) and often equipped with a Quality of Services (QoS) measure. In order to guarantee the fairness property to each client requesting a service, we propose a fair version of the (Soft) Concurrent Constraint language to deal with the negotiation phases of the Service Level Agreement (SLA) protocol.

  20. Proceedings 11th International Workshop on Automated Specification and Verification of Web Systems

    DEFF Research Database (Denmark)

    2015-01-01

    These proceedings contain the papers presented at the 11th International Workshop on Automated Specification and Verification of Web Systems (WWV 2015), which was held on 23 June 2015 in Oslo, Norway, as a satellite workshop of the 20th International Symposium on Formal Methods (FM 2015). WWV is ...

  1. INTELLIGENT SEARCH ENGINE-BASED UNIVERSAL DESCRIPTION, DISCOVERY AND INTEGRATION FOR WEB SERVICE DISCOVERY

    Directory of Open Access Journals (Sweden)

    Tamilarasi Karuppiah

    2014-01-01

    Full Text Available Web Services standard has been broadly acknowledged by industries and academic researches along with the progress of web technology and e-business. Increasing number of web applications have been bundled as web services that can be published, positioned and invoked across the web. The importance of the issues regarding their publication and innovation attains a maximum as web services multiply and become more advanced and mutually dependent. With the intension of determining the web services through effiective manner with in the minimum time period in this study proposes an UDDI with intelligent serach engine. In order to publishing and discovering web services initially, the web services are published in the UDDI registry subsequently the published web services are indexed. To improve the efficiency of discovery of web services, the indexed web services are saved as index database. The search query is compared with the index database for discovering of web services and the discovered web services are given to the service customer. The way of accessing the web services is stored in a log file, which is then utilized to provide personalized web services to the user. The finding of web service is enhanced significantly by means of an efficient exploring capability provided by the proposed system and it is accomplished of providing the maximum appropriate web service. Universal Description, Discovery and Integration (UDDI.

  2. EnviroAtlas Near Road Tree Buffer Web Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This EnviroAtlas dataset...

  3. EnviroAtlas Proximity to Parks Web Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This EnviroAtlas dataset shows...

  4. Runtime Monitoring Composite Web Services Through Stateful Aspect Extension

    Institute of Scientific and Technical Information of China (English)

    Tao Huang; Guo-Quan Wu; Jun Wei

    2009-01-01

    The execution of composite Web services with WS-BPEL relies on externally autonomous Web services. This implies the need to constantly monitor the running behavior of the involved parties. Moreover, monitoring the execution of composite Web services for particular patterns is critical to enhance the reliability of the processes. In this paper,we propose an aspect-oriented framework as a solution to provide monitoring and recovery support for composite Web services. In particular, this framework includes 1) a stateful aspect based template, where history-based pointcut specifies patterns of interest cannot be violated within a range, while advice specifies the associated recovery action; 2) a tool support for runtime monitoring and recovery based on aspect-oriented execution environment. Our experiments indicate that the proposed monitoring approach incurs minimal overhead and is efficient.

  5. MODAPS Web Services API for LANCE-MODIS

    Data.gov (United States)

    National Aeronautics and Space Administration — MODAPS Web Services API for LANCE-MODIS. This Application Programming Interface (API) encompasses a library of functions that provides programmatic data access to...

  6. WIWS: a protein structure bioinformatics Web service collection.

    Science.gov (United States)

    Hekkelman, M L; Te Beek, T A H; Pettifer, S R; Thorne, D; Attwood, T K; Vriend, G

    2010-07-01

    The WHAT IF molecular-modelling and drug design program is widely distributed in the world of protein structure bioinformatics. Although originally designed as an interactive application, its highly modular design and inbuilt control language have recently enabled its deployment as a collection of programmatically accessible web services. We report here a collection of WHAT IF-based protein structure bioinformatics web services: these relate to structure quality, the use of symmetry in crystal structures, structure correction and optimization, adding hydrogens and optimizing hydrogen bonds and a series of geometric calculations. The freely accessible web services are based on the industry standard WS-I profile and the EMBRACE technical guidelines, and are available via both REST and SOAP paradigms. The web services run on a dedicated computational cluster; their function and availability is monitored daily.

  7. EnviroAtlas Green Space Proximity Gradient Web Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). In any given 1-square meter...

  8. EnviroAtlas Impervious Proximity Gradient Web Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). In any given 1-square meter...

  9. SELECTION OF ONTOLOGY FOR WEB SERVICE DESCRIPTION LANGUAGE TO ONTOLOGY WEB LANGUAGE CONVERSION

    Directory of Open Access Journals (Sweden)

    J. Mannar Mannan

    2014-01-01

    Full Text Available Semantic web is to extend the current human readable web to encoding some of the semantic of resources in a machine processing form. As a Semantic web component, Semantic Web Services (SWS uses a mark-up that makes the data into detailed and sophisticated machine readable way. One such language is Ontology Web Language (OWL. Existing conventional web service annotation can be changed to semantic web service by mapping Web Service Description Language (WSDL with the semantic annotation of OWL-S. In this conversion of WSDL to OWL process, the ontology plays a vital role. Ontology can be stored and retrieved from local repository and selecting the appropriate ontology is a complicated process and this can be achieved by Ontology Searching and Property Matching (OSPM engine. Ontology is stored in the local repository as ontology document and exact matching of ontology for the requested query can be searched using semantic similarity ranking method. High ranked classes of ontology will undergo property matching; here requested concept will be matched with the resulting property. OSPM engine act as the backbone for selecting an exact ontology and reduce the conflict that occurs while selecting the ontology for annotation purpose.

  10. SSWAP: A Simple Semantic Web Architecture and Protocol for Semantic Web Services

    Science.gov (United States)

    SSWAP (Simple Semantic Web Architecture and Protocol) is an architecture, protocol, and platform for using reasoning to semantically integrate heterogeneous disparate data and services on the web. SSWAP is the driving technology behind the Virtual Plant Information Network, an NSF-funded semantic w...

  11. Towards Automated Lecture Capture, Navigation and Delivery System for Web-Lecture on Demand

    CERN Document Server

    Kannan, Rajkumar

    2010-01-01

    Institutions all over the world are continuously exploring ways to use ICT in improving teaching and learning effectiveness. The use of course web pages, discussion groups, bulletin boards, and e-mails have shown considerable impact on teaching and learning in significant ways, across all disciplines. ELearning has emerged as an alternative to traditional classroom-based education and training and web lectures can be a powerful addition to traditional lectures. They can even serve as a main content source for learning, provided users can quickly navigate and locate relevant pages in a web lecture. A web lecture consists of video and audio of the presenter and slides complemented with screen capturing. In this paper, an automated approach for recording live lectures and for browsing available web lectures for on-demand applications by end users is presented.

  12. Performance of SOAP in Web Service Environment compared to CORBA

    OpenAIRE

    Paulsson, Ulf; Elfwing, Robert

    2002-01-01

    Web Services is one of the latest golden concepts that promise flexibility and unlimited potential for interconnection between systems of the same or different type. The communication is based on SOAP ? Simple Object Access Protocol, which is founded on XML (eXtended Markup Language). We have made experiments with SOAP in a Web Service Environment to find out the performance in response time using SOAP compared to CORBA. Unsurprisingly CORBA (Common Object Request Broker Architecture) is sign...

  13. Web service without SOAP%无SOAP的Web服务

    Institute of Scientific and Technical Information of China (English)

    杨晓慧

    2002-01-01

    描述一个更通用的、独立于SOAP的调用Web服务的方法,称之为"Web服务调用框架'(Web Service Invocation Framework(WSIF)).它专门设计来直接调用"Web服务描述语言"(Web Services Description Language(WSDL))描述的Web服务,隐藏了底层访问协议(比如SOAP)的复杂性.

  14. Developing RESTful web services with Jersey 2.0

    CERN Document Server

    Gulabani, Sunil

    2013-01-01

    The book will follow a standard tutorial approach and will teach readers how to use the Jersey API for creating RESTful web services.This book is intended for Java EE developers who are building applications on the REST architecture. This is a quick, hands-on guide for learning JAX-RS 2.0. Developers should have some knowledge about RESTful web services but it's not essential to know JAX-RS 1.0.

  15. Provenance-Based Approaches to Semantic Web Service Discovery and Usage

    Science.gov (United States)

    Narock, Thomas William

    2012-01-01

    The World Wide Web Consortium defines a Web Service as "a software system designed to support interoperable machine-to-machine interaction over a network." Web Services have become increasingly important both within and across organizational boundaries. With the recent advent of the Semantic Web, web services have evolved into semantic…

  16. Supporting B2B Business Documents in XML Web Services

    Institute of Scientific and Technical Information of China (English)

    KIM Hyoungdo

    2004-01-01

    While XML web services become recognized as a solution to business-to-business transactions, there are many problems that should be solved. For example, it is not easy to manipulate business documents of existing standards such as RosettaNet and UN/EDIFACT EDI, traditionally regarded as an important resource for managing B2B relationships. As a starting point for the complete implementation of B2B web services, this paper deals with how to support B2B business documents in XML web services. In the first phase, basic requirements for driving XML web services by business documents are introduced. As a solution, this paper presents how to express B2B business documents in WSDL, a core standard for XML web services. This kind of approach facilitates the reuse of existing business documents and enhances interoperability between implemented web services. Furthermore, it suggests how to link with other conceptual modeling frameworks such as ebXML/UMM, built on a rich heritage of electronic business experience.

  17. Reinforcement Learning Based Web Service Compositions for Mobile Business

    Science.gov (United States)

    Zhou, Juan; Chen, Shouming

    In this paper, we propose a new solution to Reactive Web Service Composition, via molding with Reinforcement Learning, and introducing modified (alterable) QoS variables into the model as elements in the Markov Decision Process tuple. Moreover, we give an example of Reactive-WSC-based mobile banking, to demonstrate the intrinsic capability of the solution in question of obtaining the optimized service composition, characterized by (alterable) target QoS variable sets with optimized values. Consequently, we come to the conclusion that the solution has decent potentials in boosting customer experiences and qualities of services in Web Services, and those in applications in the whole electronic commerce and business sector.

  18. ASP.NET web API build RESTful web applications and services on the .NET framework

    CERN Document Server

    Kanjilal, Joydip

    2013-01-01

    This book is a step-by-step, practical tutorial with a simple approach to help you build RESTful web applications and services on the .NET framework quickly and efficiently.This book is for ASP.NET web developers who want to explore REST-based services with C# 5. This book contains many real-world code examples with explanations whenever necessary. Some experience with C# and ASP.NET 4 is expected.

  19. WSC-07: Evolving the Web Services Challenge

    NARCIS (Netherlands)

    Blake, M. Brian; Cheung, William K.W.; Jaeger, Michael C.; Wombacher, Andreas

    2007-01-01

    Service-oriented architecture (SOA) is an evolving architectural paradigm where businesses can expose their capabilities as modular, network-accessible software services. By decomposing capabilities into modular services, organizations can share their offerings at multiple levels of granularity whil

  20. Business Systems Branch Abilities, Capabilities, and Services Web Page

    Science.gov (United States)

    Cortes-Pena, Aida Yoguely

    2009-01-01

    During the INSPIRE summer internship I acted as the Business Systems Branch Capability Owner for the Kennedy Web-based Initiative for Communicating Capabilities System (KWICC), with the responsibility of creating a portal that describes the services provided by this Branch. This project will help others achieve a clear view ofthe services that the Business System Branch provides to NASA and the Kennedy Space Center. After collecting the data through the interviews with subject matter experts and the literature in Business World and other web sites I identified discrepancies, made the necessary corrections to the sites and placed the information from the report into the KWICC web page.

  1. UltiMatch-NL: a Web service matchmaker based on multiple semantic filters.

    Science.gov (United States)

    Mohebbi, Keyvan; Ibrahim, Suhaimi; Zamani, Mazdak; Khezrian, Mojtaba

    2014-01-01

    In this paper, a Semantic Web service matchmaker called UltiMatch-NL is presented. UltiMatch-NL applies two filters namely Signature-based and Description-based on different abstraction levels of a service profile to achieve more accurate results. More specifically, the proposed filters rely on semantic knowledge to extract the similarity between a given pair of service descriptions. Thus it is a further step towards fully automated Web service discovery via making this process more semantic-aware. In addition, a new technique is proposed to weight and combine the results of different filters of UltiMatch-NL, automatically. Moreover, an innovative approach is introduced to predict the relevance of requests and Web services and eliminate the need for setting a threshold value of similarity. In order to evaluate UltiMatch-NL, the repository of OWLS-TC is used. The performance evaluation based on standard measures from the information retrieval field shows that semantic matching of OWL-S services can be significantly improved by incorporating designed matching filters.

  2. Geo-communication, web-services, and spatial data infrastructure

    DEFF Research Database (Denmark)

    Brodersen, Lars; Nielsen, Anders

    2007-01-01

    The introduction of web-services as index-portals based on geo-information has changed the conditions for both content and form of geo-communication. A high number of players and interactions as well as a very high number of all kinds of information and combinations of these caracterise web...... services, where maps are only a part of the whole. This chapter discusses the relations between the different components of SDI and geo-communication as well as the impact thereof. Discussed is also a model for the organization of the passive components of the infrastructure; that is, legislation......, collaboration, standards, models, specifications, web services, and finally the information. Awareness of the complexity is necessary, and structure is needed to make it possible for the geo-information community to pull together in the same direction. Modern web-based geo-communication and its infrastucture...

  3. WEFES - Web explorer of forest ecosystems services under climate change

    OpenAIRE

    2010-01-01

    Poster Climate change will change the dynamics of forest environmental services. All the change complexity involved is difficult to visualize under an easy and accessible information tool capable to integrate several services that forests can provide. A preliminary Web-Explorer of Forest Ecosystems Services was developed for New Zealand where forest managers and the general public can observe what are the predictions of the different forest environmental services under current and futu...

  4. UrbanWeb: a Platform for Mobile, Context-aware Web Services

    DEFF Research Database (Denmark)

    Hansen, Frank Allan; Grønbæk, Kaj

    2011-01-01

    much benefit from being informed about the user’s context and tailored to the user’s location or the activities the user is engaged in. In this article we focus on the definition of context and context-awareness for mobile Web 2.0 services and we present a framework, UrbanWeb, which has been designed......Faster Internet connections on the mobile Internet and new advanced mobile terminals make it possible to use Web 2.0 applications and service beyond the desktop wherever and whenever you want. However, even though some service may scale in their current form to the mobile Internet, others will very...... to support these kinds of services. UrbanWeb implements context as an extension to the notion of Web 2.0 tagging and provides developers with an easy to use platform for context-aware Web services for different kind of applications. The article also discusses how to acquire different cues about the user...

  5. Mobile Web Service Discovery in Peer to Peer Networks

    CERN Document Server

    Srirama, Satish Narayana; Prinz, Wolfgang

    2010-01-01

    The advanced features of today's smart phones and hand held devices, like the increased memory and processing capabilities, allowed them to act even as information providers. Thus a smart phone hosting web services is not a fancy anymore. But the relevant discovery of these services provided by the smart phones has became quite complex, because of the volume of services possible with each Mobile Host providing some services. Centralized registries have severe drawbacks in such a scenario and alternate means of service discovery are to be addressed. P2P domain with it resource sharing capabilities comes quite handy and here in this paper we provide an alternate approach to UDDI registry for discovering mobile web services. The services are published into the P2P network as JXTA modules and the discovery issues of these module advertisements are addressed. The approach also provides alternate means of identifying the Mobile Host.

  6. Web Services Harvesting Approach Based on Internet%基于Internet的Web Services收集方法

    Institute of Scientific and Technical Information of China (English)

    王立杰; 邹艳珍; 金靖; 赵俊峰; 谢冰

    2011-01-01

    Web Services作为一种部署在Internet上的新型的可复用软件资源,得到广泛的重视和应用.但是,现有通用搜索引擎并不能很好地支持Web Services的发现,这使得软件开发人员需要花费很大的代价寻找合适的Web Services.鉴于此,提出了一种基于Intemet的Web Services获取方法,采用通用搜索引擎和特定Web Services信息发布网站相结合的方法,从Internet上收集Web Services,并从Web Services的相关网页中抽取相关描述信息.利用收集到的Web Services数据,对当前互联网上的Web Services现状进行了统计分析.这些统计结果一定程度上反映了Web Services的发展现状.%As a special kind of reusable software resources on the Internet, Web Services have received great attention. However, general Web search engine cannot well support the discovery of Web Services, which makes developers have to spend a lot of efforts in order to acquire their desired Web Services. For this reason, this paper proposes an approach for harvesting Web Services from the Internet by leveraging general search engine and specific Web services portals. In addition, it also proposes an approach to extract descriptions for Web Services from their related Web pages on the Internet. Based on the harvested data, it conducts a statistics analysis on the status of Web Services on the Internet.

  7. Dynamic profit optimization of composite web services with SLAs

    NARCIS (Netherlands)

    Živković, M.; Bosman, J.W.; van den Berg, J.L.; van der Mei, R.D.; Meeuwissen, H.B.; Núñez-Queija, R.

    2011-01-01

    In this paper we investigate sequential decision mechanisms for composite web services. After executing each sub-service within a sequential workflow, decisions are made whether to terminate or continue the execution of the workflow. These decisions are based on observed response times, expected rew

  8. RESEARCH ON REUSE-BASED WEB SERVICES COMPOSITION

    Institute of Scientific and Technical Information of China (English)

    Rao Yuan; Li Zunchao; Feng Boqin

    2005-01-01

    Objective To solve the three principal problems for reusing the software components, i.e., existence, discovery and availability principles, web services provided a new solution for reusing and assembling web software or components under distributed environment with a series of XML-based protocols. Methods A 4+1 meta-model between atomic services, such as Sequence, Parallelism, Alternation, Substitute and Iteration, and a kind of service composition description language in composition process are investigated. Furthermore, an architecture-based service composition model with Ontology Engine is proposed, which is based on the software architecture life-cycle model and provides a mechanism for services composition with dynamic management and deployment. Results The results of the prototype system development show that the service-composed application not only reused the web service components, but also reused the data resources located in distributed databases. Conclusion The method of reused-based web services composition observably decreases the period and cost of development and greatly improves the programming efficiency.

  9. MAPI: towards the integrated exploitation of bioinformatics Web Services

    Directory of Open Access Journals (Sweden)

    Karlsson Johan

    2011-10-01

    Full Text Available Abstract Background Bioinformatics is commonly featured as a well assorted list of available web resources. Although diversity of services is positive in general, the proliferation of tools, their dispersion and heterogeneity complicate the integrated exploitation of such data processing capacity. Results To facilitate the construction of software clients and make integrated use of this variety of tools, we present a modular programmatic application interface (MAPI that provides the necessary functionality for uniform representation of Web Services metadata descriptors including their management and invocation protocols of the services which they represent. This document describes the main functionality of the framework and how it can be used to facilitate the deployment of new software under a unified structure of bioinformatics Web Services. A notable feature of MAPI is the modular organization of the functionality into different modules associated with specific tasks. This means that only the modules needed for the client have to be installed, and that the module functionality can be extended without the need for re-writing the software client. Conclusions The potential utility and versatility of the software library has been demonstrated by the implementation of several currently available clients that cover different aspects of integrated data processing, ranging from service discovery to service invocation with advanced features such as workflows composition and asynchronous services calls to multiple types of Web Services including those registered in repositories (e.g. GRID-based, SOAP, BioMOBY, R-bioconductor, and others.

  10. Dynamic Profit Optimization of Composite Web Services with SLAs

    NARCIS (Netherlands)

    Zivkovic, M.; Bosman, J.W.; Berg, J.L. van den; Mei, R.D. van der; Meeuwissen, H.B.; Nunez-Queija, R.

    2011-01-01

    In this paper we investigate sequential decision mechanisms for composite web services. After executing each sub-service within a sequential workflow, decisions are made whether to terminate or continue the execution of the workflow. These decisions are based on observed response times, expected rew

  11. Planning and monitoring the execution of web service requests

    NARCIS (Netherlands)

    Lazovik, Alexander; Aiello, Marco; Papazoglou, Mike

    2006-01-01

    Interaction with web services enabled marketplaces would be greatly facilitated if users were given a high level service request language to express their goals in complex business domains. This can be achieved by using a planning framework which monitors the execution of planned goals against prede

  12. Architecture-Based Reliability Analysis of Web Services

    Science.gov (United States)

    Rahmani, Cobra Mariam

    2012-01-01

    In a Service Oriented Architecture (SOA), the hierarchical complexity of Web Services (WS) and their interactions with the underlying Application Server (AS) create new challenges in providing a realistic estimate of WS performance and reliability. The current approaches often treat the entire WS environment as a black-box. Thus, the sensitivity…

  13. SSWAP: A Simple Semantic Web Architecture and Protocol for semantic web services

    Directory of Open Access Journals (Sweden)

    Town Christopher D

    2009-09-01

    Full Text Available Abstract Background SSWAP (Simple Semantic Web Architecture and Protocol; pronounced "swap" is an architecture, protocol, and platform for using reasoning to semantically integrate heterogeneous disparate data and services on the web. SSWAP was developed as a hybrid semantic web services technology to overcome limitations found in both pure web service technologies and pure semantic web technologies. Results There are currently over 2400 resources published in SSWAP. Approximately two dozen are custom-written services for QTL (Quantitative Trait Loci and mapping data for legumes and grasses (grains. The remaining are wrappers to Nucleic Acids Research Database and Web Server entries. As an architecture, SSWAP establishes how clients (users of data, services, and ontologies, providers (suppliers of data, services, and ontologies, and discovery servers (semantic search engines interact to allow for the description, querying, discovery, invocation, and response of semantic web services. As a protocol, SSWAP provides the vocabulary and semantics to allow clients, providers, and discovery servers to engage in semantic web services. The protocol is based on the W3C-sanctioned first-order description logic language OWL DL. As an open source platform, a discovery server running at http://sswap.info (as in to "swap info" uses the description logic reasoner Pellet to integrate semantic resources. The platform hosts an interactive guide to the protocol at http://sswap.info/protocol.jsp, developer tools at http://sswap.info/developer.jsp, and a portal to third-party ontologies at http://sswapmeet.sswap.info (a "swap meet". Conclusion SSWAP addresses the three basic requirements of a semantic web services architecture (i.e., a common syntax, shared semantic, and semantic discovery while addressing three technology limitations common in distributed service systems: i.e., i the fatal mutability of traditional interfaces, ii the rigidity and fragility of static

  14. A Performance Evaluation of Mobile Web Services Security

    CERN Document Server

    Srirama, Satish Narayana; Prinz, Wolfgang

    2010-01-01

    It is now feasible to host basic web services on a smart phone due to the advances in wireless devices and mobile communication technologies. The market capture of mobile web services also has increased significantly, in the past years. While the applications are quite welcoming, the ability to provide secure and reliable communication in the vulnerable and volatile mobile ad-hoc topologies is vastly becoming necessary. Even though a lot of standardized security specifications like WS-Security, SAML exist for web services in the wired networks, not much has been analyzed and standardized in the wireless environments. In this paper we give our analysis of adapting some of the security standards, especially WS-Security to the cellular domain, with performance statistics. The performance latencies are obtained and analyzed while observing the performance and quality of service of our Mobile Host.

  15. Finding, Browsing and Getting Data Easily Using SPDF Web Services

    Science.gov (United States)

    Candey, R.; Chimiak, R.; Harris, B.; Johnson, R.; Kovalick, T.; Lal, N.; Leckner, H.; Liu, M.; McGuire, R.; Papitashvili, N.; Roberts, A.

    2010-01-01

    The NASA GSFC Space Physics Data Facility (5PDF) provides heliophysics science-enabling information services for enhancing scientific research and enabling integration of these services into the Heliophysics Data Environment paradigm, via standards-based approach (SOAP) and Representational State Transfer (REST) web services in addition to web browser, FTP, and OPeNDAP interfaces. We describe these interfaces and the philosophies behind these web services, and show how to call them from various languages, such as IDL and Perl. We are working towards a "one simple line to call" philosophy extolled in the recent VxO discussions. Combining data from many instruments and missions enables broad research analysis and correlation and coordination with other experiments and missions.

  16. Operational Use of OGC Web Services at the Met Office

    Science.gov (United States)

    Wright, Bruce

    2010-05-01

    The Met Office has adopted the Service-Orientated Architecture paradigm to deliver services to a range of customers through Rich Internet Applications (RIAs). The approach uses standard Open Geospatial Consortium (OGC) web services to provide information to web-based applications through a range of generic data services. "Invent", the Met Office beta site, is used to showcase Met Office future plans for presenting web-based weather forecasts, product and information to the public. This currently hosts a freely accessible Weather Map Viewer, written in JavaScript, which accesses a Web Map Service (WMS), to deliver innovative web-based visualizations of weather and its potential impacts to the public. The intention is to engage the public in the development of new web-based services that more accurately meet their needs. As the service is intended for public use within the UK, it has been designed to support a user base of 5 million, the analysed level of UK web traffic reaching the Met Office's public weather information site. The required scalability has been realised through the use of multi-tier tile caching: - WMS requests are made for 256x256 tiles for fixed areas and zoom levels; - a Tile Cache, developed in house, efficiently serves tiles on demand, managing WMS request for the new tiles; - Edge Servers, externally hosted by Akamai, provide a highly scalable (UK-centric) service for pre-cached tiles, passing new requests to the Tile Cache; - the Invent Weather Map Viewer uses the Google Maps API to request tiles from Edge Servers. (We would expect to make use of the Web Map Tiling Service, when it becomes an OGC standard.) The Met Office delivers specialist commercial products to market sectors such as transport, utilities and defence, which exploit a Web Feature Service (WFS) for data relating forecasts and observations to specific geographic features, and a Web Coverage Service (WCS) for sub-selections of gridded data. These are locally rendered as maps or

  17. Proceedings 7th International Workshop on Automated Specification and Verification of Web Systems

    CERN Document Server

    Kovacs, Laura; Tiezzi, Francesco

    2011-01-01

    This volume contains the final and revised versions of the papers presented at the 7th International Workshop on Automated Specification and Verification of Web Systems (WWV 2011). The workshop was held in Reykjavik, Iceland, on June 9, 2011, as part of DisCoTec 2011. The aim of the WWV workshop series is to provide an interdisciplinary forum to facilitate the cross-fertilization and the advancement of hybrid methods that exploit concepts and tools drawn from Rule-based programming, Software engineering, Formal methods and Web-oriented research. Nowadays, indeed, many companies and institutions have diverted their Web sites into interactive, completely-automated, Web-based applications for, e.g., e-business, e-learning, e-government, and e-health. The increased complexity and the explosive growth of Web systems have made their design and implementation a challenging task. Systematic, formal approaches to their specification and verification can permit to address the problems of this specific domain by means o...

  18. Bioinformatics Data Distribution and Integration via Web Services and XML

    Institute of Scientific and Technical Information of China (English)

    Xiao Li; Yizheng Zhang

    2003-01-01

    It is widely recognized that exchange, distribution, and integration of biological data are the keys to improve bioinformatics and genome biology in post-genomic era. However, the problem of exchanging and integrating biological data is not solved satisfactorily. The eXtensible Markup Language (XML) is rapidly spreading as an emerging standard for structuring documents to exchange and integrate data on the World Wide Web (WWW). Web service is the next generation of WWW and is founded upon the open standards of W3C (World Wide Web Consortium)and IETF (Internet Engineering Task Force). This paper presents XML and Web Services technologies and their use for an appropriate solution to the problem of bioinformatics data exchange and integration.

  19. A Generic Evaluation Model for Semantic Web Services

    Science.gov (United States)

    Shafiq, Omair

    Semantic Web Services research has gained momentum over the last few Years and by now several realizations exist. They are being used in a number of industrial use-cases. Soon software developers will be expected to use this infrastructure to build their B2B applications requiring dynamic integration. However, there is still a lack of guidelines for the evaluation of tools developed to realize Semantic Web Services and applications built on top of them. In normal software engineering practice such guidelines can already be found for traditional component-based systems. Also some efforts are being made to build performance models for servicebased systems. Drawing on these related efforts in component-oriented and servicebased systems, we identified the need for a generic evaluation model for Semantic Web Services applicable to any realization. The generic evaluation model will help users and customers to orient their systems and solutions towards using Semantic Web Services. In this chapter, we have presented the requirements for the generic evaluation model for Semantic Web Services and further discussed the initial steps that we took to sketch such a model. Finally, we discuss related activities for evaluating semantic technologies.

  20. Validation and Classification of Web Services using Equalization Validation Classification

    Directory of Open Access Journals (Sweden)

    ALAMELU MUTHUKRISHNAN

    2012-12-01

    Full Text Available In the business process world, web services present a managed and middleware to connect huge number of services. Web service transaction is a mechanism to compose services with their desired quality parameters. If enormous transactions occur, the provider could not acquire the accurate data at the correct time. So it is necessary to reduce the overburden of web service t ransactions. In order to reduce the excess of transactions form customers to providers, this paper propose a new method called Equalization Validation Classification. This method introduces a new weight - reducing algorithm called Efficient Trim Down algorit hm to reduce the overburden of the incoming client requests. When this proposed algorithm is compared with Decision tree algorithms of (J48, Random Tree, Random Forest, AD Tree it produces a better accuracy and Validation than the existing algorithms. The proposed trimming method was analyzed with the Decision tree algorithms and the results implementation shows that the ETD algorithm provides better performance in terms of improved accuracy with Effective Validation. Therefore, the proposed method provide s a good gateway to reduce the overburden of the client requests in web services. Moreover analyzing the requests arrived from a vast number of clients and preventing the illegitimate requests save the service provider time

  1. Implementing the WebSocket Protocol Based on Formal Modelling and Automated Code Generation

    DEFF Research Database (Denmark)

    Simonsen, Kent Inge; Kristensen, Lars Michael

    2014-01-01

    protocols. Furthermore, we perform formal verification of the CPN model prior to code generation, and test the implementation for interoperability against the Autobahn WebSocket test-suite resulting in 97% and 99% success rate for the client and server implementation, respectively. The tests show...... with pragmatic annotations for automated code generation of protocol software. The contribution of this paper is an application of the approach as implemented in the PetriCode tool to obtain protocol software implementing the IETF WebSocket protocol. This demonstrates the scalability of our approach to real...

  2. CMS data quality monitoring web service

    Energy Technology Data Exchange (ETDEWEB)

    Tuura, L; Eulisse, G [Northeastern University, Boston, MA (United States); Meyer, A, E-mail: lat@cern.c, E-mail: giulio.eulisse@cern.c, E-mail: andreas.meyer@cern.c [DESY, Hamburg (Germany)

    2010-04-01

    A central component of the data quality monitoring system of the CMS experiment at the Large Hadron Collider is a web site for browsing data quality histograms. The production servers in data taking provide access to several hundred thousand histograms per run, both live in online as well as for up to several terabytes of archived histograms for the online data taking, Tier-0 prompt reconstruction, prompt calibration and analysis activities, for re-reconstruction at Tier-1s and for release validation. At the present usage level the servers currently handle in total around a million authenticated HTTP requests per day. We describe the main features and components of the system, our implementation for web-based interactive rendering, and the server design. We give an overview of the deployment and maintenance procedures. We discuss the main technical challenges and our solutions to them, with emphasis on functionality, long-term robustness and performance.

  3. Web Services 的安全性研究%Research on the Security in Web Services

    Institute of Scientific and Technical Information of China (English)

    牟连佳

    2008-01-01

    通过评测蕴涵于Web Services模型中的安全特征,揭示Web安全的潜能.讨论Web Services的安全规范,其次分析Web Services安全实施的各种情况,最后一部分讨论Web Services安全模型的未来发展.

  4. Real-time medical collaboration services over the web.

    Science.gov (United States)

    Andrikos, Christos; Rassias, Georgios; Tsanakas, Panayiotis; Maglogiannis, Ilias

    2015-08-01

    The gradual shift in modern medical practice, from working alone clinical doctors to MDTs (Multi-Disciplinary Teams), raises the need of online real-time collaboration among geographically distributed medical personnel. The paper presents a Web-based platform, featuring an efficient medical data management and exchange, for hosting real-time collaborative services. The presented work leverages state-of-the-art features of the web (technologies and APIs) to support client-side medical data processing. Moreover, to address the typical bandwidth bottleneck and known scalability issues of centralized data sharing, an indirect RPC (Remote Process Call) scheme is introduced through object synchronization over the WebRTC paradigm.

  5. The RCSB Protein Data Bank: redesigned web site and web services.

    Science.gov (United States)

    Rose, Peter W; Beran, Bojan; Bi, Chunxiao; Bluhm, Wolfgang F; Dimitropoulos, Dimitris; Goodsell, David S; Prlic, Andreas; Quesada, Martha; Quinn, Gregory B; Westbrook, John D; Young, Jasmine; Yukich, Benjamin; Zardecki, Christine; Berman, Helen M; Bourne, Philip E

    2011-01-01

    The RCSB Protein Data Bank (RCSB PDB) web site (http://www.pdb.org) has been redesigned to increase usability and to cater to a larger and more diverse user base. This article describes key enhancements and new features that fall into the following categories: (i) query and analysis tools for chemical structure searching, query refinement, tabulation and export of query results; (ii) web site customization and new structure alerts; (iii) pair-wise and representative protein structure alignments; (iv) visualization of large assemblies; (v) integration of structural data with the open access literature and binding affinity data; and (vi) web services and web widgets to facilitate integration of PDB data and tools with other resources. These improvements enable a range of new possibilities to analyze and understand structure data. The next generation of the RCSB PDB web site, as described here, provides a rich resource for research and education.

  6. WebAUGUSTUS--a web service for training AUGUSTUS and predicting genes in eukaryotes.

    Science.gov (United States)

    Hoff, Katharina J; Stanke, Mario

    2013-07-01

    The prediction of protein coding genes is an important step in the annotation of newly sequenced and assembled genomes. AUGUSTUS is one of the most accurate tools for eukaryotic gene prediction. Here, we present WebAUGUSTUS, a web interface for training AUGUSTUS and predicting genes with AUGUSTUS. Depending on the needs of the user, WebAUGUSTUS generates training gene structures automatically. Besides a genome file, either a file with expressed sequence tags or a file with protein sequences is required for this step. Alternatively, it is possible to submit an externally generated training gene structure file and a genome file. The web service optimizes AUGUSTUS parameters and predicts genes with those parameters. WebAUGUSTUS is available at http://bioinf.uni-greifswald.de/webaugustus.

  7. Web Service Architecture for a Meta Search Engine

    Directory of Open Access Journals (Sweden)

    K.Srinivas

    2011-10-01

    Full Text Available With the rapid advancements in Information Technology, Information Retrieval on Internet is gaining its importance day by day. Nowadays there are millions of Websites and billions of homepages available on the Internet. Search Engines are the essential tools for the purpose of retrieving the required information from the Web. But the existing search engines have many problems such as not having wide scope, imbalance in accessing the sites etc. So, the effectiveness of a search engine plays a vital role. Meta search engines are such systems that can provide effective information by accessing multiple existing search engines such as Dog Pile, Meta Crawler etc, but most of them cannot successfully operate on heterogeneous and fully dynamic web environment. In this paper we propose a Web Service Architecture for Meta Search Engine to cater the need of heterogeneous and dynamic web environment. The objective of our proposal is to exploit most of the features offered by Web Services through the implementation of a Web Service Meta Search Engine.

  8. 75 FR 20400 - Submission for Review: Federal Cyber Service: Scholarship for Service (SFS) Registration Web Site

    Science.gov (United States)

    2010-04-19

    ... MANAGEMENT Submission for Review: Federal Cyber Service: Scholarship for Service (SFS) Registration Web Site... supporting documentation, may be obtained by contacting the San Antonio Services Branch, Office of Personnel... Science Foundation in accordance with the Federal Cyber Service Training and Education Initiative...

  9. Ubiquitous Computing Services Discovery and Execution Using a Novel Intelligent Web Services Algorithm

    Directory of Open Access Journals (Sweden)

    SangYong Han

    2007-07-01

    Full Text Available Ubiquitous Computing makes it possible to determine in real time the locationand situations of service requesters in a web service environment as it enables access tocomputers at any time and in any place. Though research on various aspects of ubiquitouscommerce is progressing at enterprises and research centers, both domestically andoverseas, analysis of a customer’s personal preferences based on semantic web and rulebased services using semantics is not currently being conducted. This paper proposes aUbiquitous Computing Services System that enables a rule based search as well assemantics based search to support the fact that the electronic space and the physical spacecan be combined into one and the real time search for web services and the construction ofefficient web services thus become possible.

  10. A Sensor Web and Web Service-Based Approach for Active Hydrological Disaster Monitoring

    OpenAIRE

    Xi Zhai; Peng Yue; Mingda Zhang

    2016-01-01

    Rapid advancements in Earth-observing sensor systems have led to the generation of large amounts of remote sensing data that can be used for the dynamic monitoring and analysis of hydrological disasters. The management and analysis of these data could take advantage of distributed information infrastructure technologies such as Web service and Sensor Web technologies, which have shown great potential in facilitating the use of observed big data in an interoperable, flexible and on-demand way....

  11. Web Services-Enhanced Agile Modeling and Integrating Business Processes

    CERN Document Server

    Belouadha, Fatima-Zahra; Roudiès, Ounsa

    2012-01-01

    In a global business context with continuous changes, the enterprises have to enhance their operational efficiency, to react more quickly, to ensure the flexibility of their business processes, and to build new collaboration pathways with external partners. To achieve this goal, they must use e-business methods, mechanisms and techniques while capitalizing on the potential of new information and communication technologies. In this context, we propose a standards, model and Web services-based approach for modeling and integrating agile enterprise business processes. The purpose is to benefit from Web services characteristics to enhance the processes design and realize their dynamic integration. The choice of focusing on Web services is essentially justified by their broad adoption by enterprises as well as their capability to warranty interoperability between both intra and inter-enterprises systems. Thereby, we propose in this chapter a metamodel for describing business processes, and discuss their dynamic in...

  12. Contracts for Cooperation between Web Service Programmers and HTML Designers

    DEFF Research Database (Denmark)

    Böttger, Henning; Møller, Anders; Schwartzbach, Michael I.

    2006-01-01

    Interactive Web services consist of a mixture of HTML fragments and program code. The fragments, which are maintained by designers, are combined to form HTML pages that are shown to the clients. The code, which is maintained by programmers, is executed on the server to handle the business logic....... Current Web service frameworks provide little help in separating these constituents, which complicates cooperation between programmers and HTML designers. We propose a system based on XML templates and formalized contracts allowing a flexible separation of concerns. The contracts act as interfaces between...... the programmers and the HTML designers and permit tool support for statically checking that both parties fulfill their obligations. This ensures that (1) programmers and HTML designers work more independently focusing on their own expertises, (2) the Web service implementation is better structured and thus easier...

  13. KBWS: an EMBOSS associated package for accessing bioinformatics web services

    Directory of Open Access Journals (Sweden)

    Tomita Masaru

    2011-04-01

    Full Text Available Abstract The availability of bioinformatics web-based services is rapidly proliferating, for their interoperability and ease of use. The next challenge is in the integration of these services in the form of workflows, and several projects are already underway, standardizing the syntax, semantics, and user interfaces. In order to deploy the advantages of web services with locally installed tools, here we describe a collection of proxy client tools for 42 major bioinformatics web services in the form of European Molecular Biology Open Software Suite (EMBOSS UNIX command-line tools. EMBOSS provides sophisticated means for discoverability and interoperability for hundreds of tools, and our package, named the Keio Bioinformatics Web Service (KBWS, adds functionalities of local and multiple alignment of sequences, phylogenetic analyses, and prediction of cellular localization of proteins and RNA secondary structures. This software implemented in C is available under GPL from http://www.g-language.org/kbws/ and GitHub repository http://github.com/cory-ko/KBWS. Users can utilize the SOAP services implemented in Perl directly via WSDL file at http://soap.g-language.org/kbws.wsdl (RPC Encoded and http://soap.g-language.org/kbws_dl.wsdl (Document/literal.

  14. KBWS: an EMBOSS associated package for accessing bioinformatics web services.

    Science.gov (United States)

    Oshita, Kazuki; Arakawa, Kazuharu; Tomita, Masaru

    2011-04-29

    The availability of bioinformatics web-based services is rapidly proliferating, for their interoperability and ease of use. The next challenge is in the integration of these services in the form of workflows, and several projects are already underway, standardizing the syntax, semantics, and user interfaces. In order to deploy the advantages of web services with locally installed tools, here we describe a collection of proxy client tools for 42 major bioinformatics web services in the form of European Molecular Biology Open Software Suite (EMBOSS) UNIX command-line tools. EMBOSS provides sophisticated means for discoverability and interoperability for hundreds of tools, and our package, named the Keio Bioinformatics Web Service (KBWS), adds functionalities of local and multiple alignment of sequences, phylogenetic analyses, and prediction of cellular localization of proteins and RNA secondary structures. This software implemented in C is available under GPL from http://www.g-language.org/kbws/ and GitHub repository http://github.com/cory-ko/KBWS. Users can utilize the SOAP services implemented in Perl directly via WSDL file at http://soap.g-language.org/kbws.wsdl (RPC Encoded) and http://soap.g-language.org/kbws_dl.wsdl (Document/literal).

  15. 78 FR 60303 - Agency Information Collection Activities: Online Survey of Web Services Employers; New...

    Science.gov (United States)

    2013-10-01

    ... of Web Services Employers; New Information Collection ACTION: 30-Day Notice. SUMMARY: The Department... collection. (2) Title of the Form/Collection: Online Survey of Web Services Employers. (3) Agency form number... USCIS obtains data on the E-Verify Program Web Services. Gaining an understanding of the Web...

  16. Ubiquitous Computing Services Discovery and Execution Using a Novel Intelligent Web Services Algorithm

    OpenAIRE

    SangYong Han; Okkyung Choi

    2007-01-01

    Ubiquitous Computing makes it possible to determine in real time the location and situations of service requesters in a web service environment as it enables access to computers at any time and in any place. Though research on various aspects of ubiquitous commerce is progressing at enterprises and research centers, both domestically and overseas, analysis of a customer's personal preferences based on semantic web and rule based services using semantics is not currently being conducted. This ...

  17. Dynamic Web Services for Data Analysis in the Geosciences

    Science.gov (United States)

    Erlebacher, G.; Lu, Z.; Gadgil, H.; Bollig, E. F.; Kadlec, B. J.; Yuen, D. A.; Pierce, M.; Pallickara, S.

    2005-05-01

    Current large-scale multidisciplinary efforts involve a combination of computation, visualization, and data analysis over geographically distributed environments. There is an urgent need to develop easy to use middleware systems that can dynamically adjust themselves to the needs of the researchers, while at the same time shielding them from the underlying details. In this poster, we present a framework that supports fault tolerance, collaboration, and the automatic linkage of web services selected by the user at runtime. We address this problem through a a unique and flexible middleware architecture (WEBIS), based on the NaradaBrokering (NB) middleware application program interface (API) (http://www.naradabrokering.org, [1]). NB is based on a publish/subscribe mechanism whereby all messages are sent to a system with a topic tag, to be received by any entity that has subscribed to that tag. This simple approach enables natural implementation of resource discovery, fault tolerance, system monitoring, and collaboration. On the server side, there is an increasing number of so-called web services available, ranging from weather services to sophisticated GIS (Geographic Information Services) systems that provide clients with querying capability. These services adhere to existing standards and are fully described through a WSDL (Web Service Definition Language) file, many of which are publicly available. In this poster, we will demonstrate a proxy service whose role is to connect existing web services to our framework based on user requests. After selecting a desired web service from one or more registries, a user interface is created automatically based on the information contained in the WSDL file. This enables clients to interact with the service. This is illustrated through a service that computes the wavelet transform of three-dimensional scalar data files. The transformed data is processed by a second service that generates a bitmap (using the visualization

  18. A Web Service Based Design to Integrate a Web Portal and an ERP System

    Directory of Open Access Journals (Sweden)

    Mr. Manishkumar R. Solanki

    2014-04-01

    Full Text Available Today the ability to seamlessly exchange information between internal business processes, customers, and partners is vital for success. The organizations employ a variety of disparate applications that store and exchange data in dissimilar ways and therefore cannot "talk" to one another productively. Web services have evolved as a practical, cost-effective, deployment environment to realize dynamic and interoperable data integration between critical applications over operating system, platform, and language barriers that were previously impossible. This paper describes a service-oriented approach for the integration of a Web Portal and ERP application. We present a system architecture based on Web Service oriented framework in which both the applications are loosely connected through software components.

  19. 77 FR 63771 - Implementation of Full-Service Intelligent Mail Requirements for Automation Prices

    Science.gov (United States)

    2012-10-17

    ... 111 Implementation of Full-Service Intelligent Mail Requirements for Automation Prices AGENCY: Postal... modify eligibility requirements for mailers to obtain automation prices for First-Class Mail , Standard... January 2014, use of ``full-service'' Intelligent Mail would be required to obtain automation...

  20. 78 FR 23137 - Implementation of Full-Service Intelligent Mail Requirements for Automation Prices

    Science.gov (United States)

    2013-04-18

    ... 111 Implementation of Full-Service Intelligent Mail Requirements for Automation Prices AGENCY: Postal... requirements for mailers to qualify for automation prices. Effective January 26, 2014, use of ``full-service'' Intelligent Mail is required to qualify for automation prices for postcards (First-Class Mail only),...

  1. 47 CFR 80.475 - Scope of service of the Automated Maritime Telecommunications System (AMTS).

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Scope of service of the Automated Maritime Telecommunications System (AMTS). 80.475 Section 80.475 Telecommunication FEDERAL COMMUNICATIONS COMMISSION... Automated Systems § 80.475 Scope of service of the Automated Maritime Telecommunications System (AMTS)....

  2. RESEARCH ON INTEROPERABILITY OF WEB SERVICES%Web Services 互操作性研究

    Institute of Scientific and Technical Information of China (English)

    郭皎; 鄢沛

    2008-01-01

    异构Web Services间的无缝互操作是成功构建基于Web Services应用的关键之一.讨论了Web Services互操作性概要和Web Services基本交互模式,详细分析了Web Services互操作原理和Web Services描述;说明了Web Services的类型定义中的类型不匹配、不可用类型、精度和值/引用类型等问题对互操作性的影响,并给出了处理方案;同时还分析了在Web Services的调用过程中采用的SOAP编码和消息模式、Web Services约束等问题.最后针对当前应用较广泛J2EE和.NET的两个平台的Web Services的互操作设计作了简要设计.

  3. Semantic web services advancement through evaluation

    CERN Document Server

    Blake, Brian; König-Ries, Birgitta; Küster, Ulrich

    2012-01-01

    Including a useful overview of the latest research on implemented SWS technologies, this volume details a variety of current semantic service approaches and provides valuable material that will enhance future SWS evaluation methodologies and techniques.

  4. Effective electron-density map improvement and structure validation on a Linux multi-CPU web cluster: The TB Structural Genomics Consortium Bias Removal Web Service.

    Science.gov (United States)

    Reddy, Vinod; Swanson, Stanley M; Segelke, Brent; Kantardjieff, Katherine A; Sacchettini, James C; Rupp, Bernhard

    2003-12-01

    Anticipating a continuing increase in the number of structures solved by molecular replacement in high-throughput crystallography and drug-discovery programs, a user-friendly web service for automated molecular replacement, map improvement, bias removal and real-space correlation structure validation has been implemented. The service is based on an efficient bias-removal protocol, Shake&wARP, and implemented using EPMR and the CCP4 suite of programs, combined with various shell scripts and Fortran90 routines. The service returns improved maps, converted data files and real-space correlation and B-factor plots. User data are uploaded through a web interface and the CPU-intensive iteration cycles are executed on a low-cost Linux multi-CPU cluster using the Condor job-queuing package. Examples of map improvement at various resolutions are provided and include model completion and reconstruction of absent parts, sequence correction, and ligand validation in drug-target structures.

  5. Modeling and verifying Web services driven by requirements: An ontology-based approach

    Institute of Scientific and Technical Information of China (English)

    HOU Lishan; JIN ZHi; WU Budan

    2006-01-01

    Automatic discovery and composition of Web services is an important research area in Web service technology, in which the specification of Web services is a key issue. This paper presents a Web service capability description framework based on the environment ontology. This framework depicts Web services capability in two aspects:the operable environment and the environment changes resulting from behaviors of the Web service. On the basis of the framework, a requirement-driven Web service composition model has been constructed. This paper brings forward the formalization of Web service interactions with π calculus. And an automatic mechanism converting conceptual capability description to the formal process expression has been built. This kind of formal specification assists in verifying whether the composite Web service model matches the requirement.

  6. A Framework to Enhance Quality of Service for Content Delivery Network Using Web Services: A Review

    Directory of Open Access Journals (Sweden)

    K.Manivannan

    2011-09-01

    Full Text Available Content Delivery Networks (CDNs is anticipated to provide better performance delivery of content in internet through worldwide coverage, which would be a fence for new content delivery network providers. The appearance of Web as a omnipresent media for sharing content and services has led to the rapid growth of the Internet. At the same time, the number of users accessing Web-based content and services are growing exponentially. This has placed a heavy demand on Internet bandwidth and Web systems hosting content and application services. As a result, many Web sites are unable to manage this demand and offer their services in a timely manner. Content Delivery Networks (CDNs have emerged to overcome these limitations by offering infrastructure and mechanisms to deliver content and services in a scalable manner, and enhancing users Web experience. The planned research provides a framework designed to enhance QoS of Web service processes for real time servicing. QoS parameters of various domains can be combined to provide differentiated services, and allocating dynamically available resources in the midst of customers while delivering high-quality real time multimedia content. While accessing the service by a customer, it is possible to adapt real time streams to vastly changeable network conditions to give suitable quality in spite of factors upsetting Quality of service. To reach these intentions, adaptive web service processes to supply more information for determining the quality and size of the delivered object. The framework includes a section for QoS monitoring and adaptation and QoS faults prediction possibility and convalesce actions in case of failure. The aim of this research is to encourage research about quality of composite services in service-oriented architectures with security measures.

  7. System Interoperability Study for Healthcare Information System with Web Services

    Directory of Open Access Journals (Sweden)

    J. K. Zhang

    2007-01-01

    Full Text Available This paper describes the use of a new distributed middleware technology ‘Web Services’ in the proposed Healthcare Information System (HIS to address the issue of system interoperability raised from existing Healthcare Information systems. With the development of HISs, hospitals and healthcare institutes have been building their own HISs for processing massive healthcare data, such as, systems built up for hospitals under the NHS (National Health Service to manage patients’ records. Nowadays many healthcare providers are willing to integrate their systems’ functions and data for information sharing. This has raised concerns in data transmission, data security and network limitation. Among these issues, system and language interoperability are one of most obvious issues since data and application integration is not an easy task due to differences in programming languages, system platforms, Database Management Systems (DBMS used within different systems. As a new distributed middleware technology, Web service brings an ideal solution to the issue of system and language interoperability. Web service has been approved to be very successful in many commercial applications (e.g. Amazon.com, Dell computer, etc., however it is different to healthcare information system. As the result, Web Service-based Integrated Healthcare Information System (WSIHIS is proposed to address the interoperability issue of existing HISs but also to introduce this new technology into the healthcare environment.

  8. A Web Service Monitoring System for the Enterprise

    Directory of Open Access Journals (Sweden)

    Coimbatore S. Chandersekaran

    2012-04-01

    Full Text Available An enterprise that uses web services for the conduct of business can benefit from computer-based monitoring for its normal course of business. Services that are unavailable, delayed, inadequate, and/or provide poor or delayed information flow, all hinder or prevent the normal course of business. In extreme cases they may prevent business from being conducted. The proper performance of the service-oriented approach, the communication flow and the services themselves directly equate to the health and vitality of the enterprise. By health we mean, availability, performance, integrity, and reliability of web services. This paper reviews an agent based approach for web service monitoring in an enterprise environment. The agents create and collect information about the services. The paper also provides a definition of events that need to be monitored and the elements that should be recorded. Some information about critical events is time critical and should be sent as alerts to monitoring personnel for review and possible action. These processes are currently being implemented in a major defense enterprise.

  9. Magallanes: a web services discovery and automatic workflow composition tool

    Directory of Open Access Journals (Sweden)

    Trelles Oswaldo

    2009-10-01

    Full Text Available Abstract Background To aid in bioinformatics data processing and analysis, an increasing number of web-based applications are being deployed. Although this is a positive circumstance in general, the proliferation of tools makes it difficult to find the right tool, or more importantly, the right set of tools that can work together to solve real complex problems. Results Magallanes (Magellan is a versatile, platform-independent Java library of algorithms aimed at discovering bioinformatics web services and associated data types. A second important feature of Magallanes is its ability to connect available and compatible web services into workflows that can process data sequentially to reach a desired output given a particular input. Magallanes' capabilities can be exploited both as an API or directly accessed through a graphic user interface. The Magallanes' API is freely available for academic use, and together with Magallanes application has been tested in MS-Windows™ XP and Unix-like operating systems. Detailed implementation information, including user manuals and tutorials, is available at http://www.bitlab-es.com/magallanes. Conclusion Different implementations of the same client (web page, desktop applications, web services, etc. have been deployed and are currently in use in real installations such as the National Institute of Bioinformatics (Spain and the ACGT-EU project. This shows the potential utility and versatility of the software library, including the integration of novel tools in the domain and with strong evidences in the line of facilitate the automatic discovering and composition of workflows.

  10. Web Service 接口描述语言WSDL

    Institute of Scientific and Technical Information of China (English)

    王晓华

    2003-01-01

    Web Service定义语言(Web Service Definition Language,WSDL)是一个建议性标准,用于描述Web Service的技术调用语法。WSDL定义了一套基于XML的语法,将Web Service描述为能够进行消息交换的服务访问点的集合,从而满足了这种需求。WSDL服务定义为分布式系统提供了可机器识别的SDK文档,并且可用于描述自动执行应用程序通信中涉及的细节。WSDL的当前版本是1.1,规范可以从:

  11. Pinda: a web service for detection and analysis of intraspecies gene duplication events.

    Science.gov (United States)

    Kontopoulos, Dimitrios-Georgios; Glykos, Nicholas M

    2013-09-01

    We present Pinda, a Web service for the detection and analysis of possible duplications of a given protein or DNA sequence within a source species. Pinda fully automates the whole gene duplication detection procedure, from performing the initial similarity searches, to generating the multiple sequence alignments and the corresponding phylogenetic trees, to bootstrapping the trees and producing a Z-score-based list of duplication candidates for the input sequence. Pinda has been cross-validated using an extensive set of known and bibliographically characterized duplication events. The service facilitates the automatic and dependable identification of gene duplication events, using some of the most successful bioinformatics software to perform an extensive analysis protocol. Pinda will prove of use for the analysis of newly discovered genes and proteins, thus also assisting the study of recently sequenced genomes. The service's location is http://orion.mbg.duth.gr/Pinda. The source code is freely available via https://github.com/dgkontopoulos/Pinda/.

  12. Web services in third-generation service platforms

    NARCIS (Netherlands)

    Lagerberg, Ko; Plas, Dirk-Jaap; Wegdam, Maarten

    2002-01-01

    In third-generation (3G) networks, third-party service developers will have access to the mobile network resources using open network interfaces, such as the 3rd Generation Partnership Project's (3GPP's) Open Service Access (OSA). The service platforms that offer these interfaces provide interoperab

  13. Robotics and Automation for Flight Deck Aircraft Servicing

    Energy Technology Data Exchange (ETDEWEB)

    Chesser, J.B.; Draper, J.V.; Pin, F.G.

    1999-03-01

    One of the missions of the Future Aircraft Carriers Program is to investigate methods that would improve aircraft turnaround servicing activities on carrier decks. The major objectives and criteria for evaluating alternative aircraft servicing methods are to reduce workload requirements, turnaround times (TAT), and life-cycle costs (LCC). Technologies in the field of Robotics and Automation (R and A) have the potential to significantly contribute to these objectives. The objective of this study was to investigate aircraft servicing functions on carrier decks which would offer the potentially most significant payoff if improved by various R and A technologies. Improvement in this case means reducing workload, time and LCC. This objective was accomplished using a ''bottom-up'' formalized approach as described in the following.

  14. BioMOBY: an open source biological web services proposal.

    Science.gov (United States)

    Wilkinson, Mark D; Links, Matthew

    2002-12-01

    BioMOBY is an Open Source research project which aims to generate an architecture for the discovery and distribution of biological data through web services; data and services are decentralised, but the availability of these resources, and the instructions for interacting with them, are registered in a central location called MOBY Central. BioMOBY adds to the web services paradigm, as exemplified by Universal Data Discovery and Integration (UDDI), by having an object-driven registry query system with object and service ontologies. This allows users to traverse expansive and disparate data sets where each possible next step is presented based on the data object currently in-hand. Moreover, a path from the current data object to a desired final data object could be automatically discovered using the registry. Native BioMOBY objects are lightweight XML, and make up both the query and the response of a simple object access protocol (SOAP) transaction.

  15. Formal Modeling of Trust Web Service Composition Using Pi-calculus

    Directory of Open Access Journals (Sweden)

    Bensheng YUN

    2013-08-01

    Full Text Available To enhance the credibility of Web service composition, Pi-calculus based formal modeling of trust Web service composition is proposed. Trust Web service composition is firstly defined abstractly; then Pi-calculus is used to depict structure and internal interaction of Trust Web service composition, the mapping relation between trust entity and Pi-calculus is provided. Automatic reasoner MWB is adopted to analyze and reason the Trust Web service composition system, which is aimed at finding and correcting the faults before the implementation of trust authentication of Web service composition. It thus meets the users’ demands on trust quality effectively.

  16. Discovering Land Cover Web Map Services from the Deep Web with JavaScript Invocation Rules

    Directory of Open Access Journals (Sweden)

    Dongyang Hou

    2016-06-01

    Full Text Available Automatic discovery of isolated land cover web map services (LCWMSs can potentially help in sharing land cover data. Currently, various search engine-based and crawler-based approaches have been developed for finding services dispersed throughout the surface web. In fact, with the prevalence of geospatial web applications, a considerable number of LCWMSs are hidden in JavaScript code, which belongs to the deep web. However, discovering LCWMSs from JavaScript code remains an open challenge. This paper aims to solve this challenge by proposing a focused deep web crawler for finding more LCWMSs from deep web JavaScript code and the surface web. First, the names of a group of JavaScript links are abstracted as initial judgements. Through name matching, these judgements are utilized to judge whether or not the fetched webpages contain predefined JavaScript links that may prompt JavaScript code to invoke WMSs. Secondly, some JavaScript invocation functions and URL formats for WMS are summarized as JavaScript invocation rules from prior knowledge of how WMSs are employed and coded in JavaScript. These invocation rules are used to identify the JavaScript code for extracting candidate WMSs through rule matching. The above two operations are incorporated into a traditional focused crawling strategy situated between the tasks of fetching webpages and parsing webpages. Thirdly, LCWMSs are selected by matching services with a set of land cover keywords. Moreover, a search engine for LCWMSs is implemented that uses the focused deep web crawler to retrieve and integrate the LCWMSs it discovers. In the first experiment, eight online geospatial web applications serve as seed URLs (Uniform Resource Locators and crawling scopes; the proposed crawler addresses only the JavaScript code in these eight applications. All 32 available WMSs hidden in JavaScript code were found using the proposed crawler, while not one WMS was discovered through the focused crawler

  17. Gbrowse Moby: a Web-based browser for BioMoby Services

    Directory of Open Access Journals (Sweden)

    Wilkinson Mark

    2006-10-01

    Full Text Available Abstract Background The BioMoby project aims to identify and deploy standards and conventions that aid in the discovery, execution, and pipelining of distributed bioinformatics Web Services. As of August, 2006, approximately 680 bioinformatics resources were available through the BioMoby interoperability platform. There are a variety of clients that can interact with BioMoby-style services. Here we describe a Web-based browser-style client – Gbrowse Moby – that allows users to discover and "surf" from one bioinformatics service to the next using a semantically-aided browsing interface. Results Gbrowse Moby is a low-throughput, exploratory tool specifically aimed at non-informaticians. It provides a straightforward, minimal interface that enables a researcher to query the BioMoby Central web service registry for data retrieval or analytical tools of interest, and then select and execute their chosen tool with a single mouse-click. The data is preserved at each step, thus allowing the researcher to manually "click" the data from one service to the next, with the Gbrowse Moby application managing all data formatting and interface interpretation on their behalf. The path of manual exploration is preserved and can be downloaded for import into automated, high-throughput tools such as Taverna. Gbrowse Moby also includes a robust data rendering system to ensure that all new data-types that appear in the BioMoby registry can be properly displayed in the Web interface. Conclusion Gbrowse Moby is a robust, yet facile entry point for both newcomers to the BioMoby interoperability project who wish to manually explore what is known about their data of interest, as well as experienced users who wish to observe the functionality of their analytical workflows prior to running them in a high-throughput environment.

  18. Consuming Web Services: A Yahoo! Newsfeed Reader

    Science.gov (United States)

    Dadashzadeh, Mohammad

    2010-01-01

    Service Oriented Architecture (SOA) shows demonstrable signs of simplifying software integration. It provides the necessary framework for building applications that can be integrated and can reduce the cost of integration significantly. Organizations are beginning to architect new integration solutions following the SOA approach. As such,…

  19. NaviCell Web Service for network-based data visualization.

    Science.gov (United States)

    Bonnet, Eric; Viara, Eric; Kuperstein, Inna; Calzone, Laurence; Cohen, David P A; Barillot, Emmanuel; Zinovyev, Andrei

    2015-07-01

    Data visualization is an essential element of biological research, required for obtaining insights and formulating new hypotheses on mechanisms of health and disease. NaviCell Web Service is a tool for network-based visualization of 'omics' data which implements several data visual representation methods and utilities for combining them together. NaviCell Web Service uses Google Maps and semantic zooming to browse large biological network maps, represented in various formats, together with different types of the molecular data mapped on top of them. For achieving this, the tool provides standard heatmaps, barplots and glyphs as well as the novel map staining technique for grasping large-scale trends in numerical values (such as whole transcriptome) projected onto a pathway map. The web service provides a server mode, which allows automating visualization tasks and retrieving data from maps via RESTful (standard HTTP) calls. Bindings to different programming languages are provided (Python and R). We illustrate the purpose of the tool with several case studies using pathway maps created by different research groups, in which data visualization provides new insights into molecular mechanisms involved in systemic diseases such as cancer and neurodegenerative diseases.

  20. A demanding web-based PACS supported by web services technology

    Science.gov (United States)

    Costa, Carlos M. A.; Silva, Augusto; Oliveira, José L.; Ribeiro, Vasco G.; Ribeiro, José

    2006-03-01

    During the last years, the ubiquity of web interfaces have pushed practically all PACS suppliers to develop client applications in which clinical practitioners can receive and analyze medical images, using conventional personal computers and Web browsers. However, due to security and performance issues, the utilization of these software packages has been restricted to Intranets. Paradigmatically, one of the most important advantages of digital image systems is to simplify the widespread sharing and remote access of medical data between healthcare institutions. This paper analyses the traditional PACS drawbacks that contribute to their reduced usage in the Internet and describes a PACS based on Web Services technology that supports a customized DICOM encoding syntax and a specific compression scheme providing all historical patient data in a unique Web interface.

  1. Analyzing the Evolution of Web Services using Fine-Grained Changes

    NARCIS (Netherlands)

    Romano, D.; Pinzger, M.

    2012-01-01

    Preprint of paper published in: ICWS 2012 - IEEE 19th International Conference on Web Services, 24-29 June 2012; doi:10.1109/ICWS.2012.29 In the service-oriented paradigm web service interfaces are considered contracts between web service subscribers and providers. However, these interfaces are co

  2. On the standardisation of Web service management operations

    NARCIS (Netherlands)

    Sloten, van J.; Pras, A.; Sinderen, van M.J.; Harju, J.; Moltchanov, D.; Silverajan, B.

    2004-01-01

    Given the current interest in TCP/IP network management research towards Web services, it is important to recognise how standardisation can be achieved. This paper mainly focuses on the standardisation of operations and not management information. We state that standardisation should be done by stan

  3. Web services at the European Bioinformatics Institute-2009.

    Science.gov (United States)

    McWilliam, Hamish; Valentin, Franck; Goujon, Mickael; Li, Weizhong; Narayanasamy, Menaka; Martin, Jenny; Miyar, Teresa; Lopez, Rodrigo

    2009-07-01

    The European Bioinformatics Institute (EMBL-EBI) has been providing access to mainstream databases and tools in bioinformatics since 1997. In addition to the traditional web form based interfaces, APIs exist for core data resources such as EMBL-Bank, Ensembl, UniProt, InterPro, PDB and ArrayExpress. These APIs are based on Web Services (SOAP/REST) interfaces that allow users to systematically access databases and analytical tools. From the user's point of view, these Web Services provide the same functionality as the browser-based forms. However, using the APIs frees the user from web page constraints and are ideal for the analysis of large batches of data, performing text-mining tasks and the casual or systematic evaluation of mathematical models in regulatory networks. Furthermore, these services are widespread and easy to use; require no prior knowledge of the technology and no more than basic experience in programming. In the following we wish to inform of new and updated services as well as briefly describe planned developments to be made available during the course of 2009-2010.

  4. A web service based tool to plan atmospheric research flights

    Directory of Open Access Journals (Sweden)

    M. Rautenhaus

    2011-09-01

    Full Text Available We present a web service based tool for the planning of atmospheric research flights. The tool provides online access to horizontal maps and vertical cross-sections of numerical weather prediction data and in particular allows the interactive design of a flight route in direct relation to the predictions. It thereby fills a crucial gap in the set of currently available tools for using data from numerical atmospheric models for research flight planning. A distinct feature of the tool is its lightweight, web service based architecture, requiring only commodity hardware and a basic Internet connection for deployment. Access to visualisations of prediction data is achieved by using an extended version of the Open Geospatial Consortium Web Map Service (WMS standard, a technology that has gained increased attention in meteorology in recent years. With the WMS approach, we avoid the transfer of large forecast model output datasets while enabling on-demand generated visualisations of the predictions at campaign sites with limited Internet bandwidth. Usage of the Web Map Service standard also enables access to third-party sources of georeferenced data. We have implemented the software using the open-source programming language Python. In the present article, we describe the architecture of the tool. As an example application, we discuss a case study research flight planned for the scenario of the 2010 Eyjafjalla volcano eruption. Usage and implementation details are provided as Supplement.

  5. Structured Communication-Centered Programming for Web Services

    DEFF Research Database (Denmark)

    Carbone, Marco; Honda, Kohei; Yoshida, Nobuko

    2012-01-01

    This article relates two different paradigms of descriptions of communication behavior, one focusing on global message flows and another on end-point behaviors, using formal calculi based on session types. The global calculus, which originates from a Web service description language (W3C WS...

  6. A Placement Web-Service for Lifelong Learners

    NARCIS (Netherlands)

    Kalz, Marco

    2009-01-01

    Kalz, M. (2009). A Placement Web-Service for Lifelong Learners. Presentation held at the 9th International Conference on Knowledge Management and Knowledge Technologies. September, 2-4, 2009, Graz, Austria. You can embed this presentation from here http://slideshare.net/mkalz

  7. WSGB: A Web Service-Based Growing Book

    Science.gov (United States)

    Dow, C. R.; Huang, L. H.; Chen, K. H.; Chiu, J. C.; Lin, C. M.

    2006-01-01

    Growing Book refers to an electronic textbook that is co-developed, and has the ability to be constantly maintained, by groups of independent authors, thus creating a rich and ever-growing learning environment that can be conveniently accessible from anywhere. This work designs and implements a Web Service-based Growing Book that has the merits of…

  8. Optimization and Ranking in Web Service Composition using Performance Index

    Directory of Open Access Journals (Sweden)

    Srinath V

    2012-09-01

    Full Text Available Selection of the best service from the existing composite services is an emerging technology that aims at attaining a better performance. The steps involved include selection of relevant web services from the composite service, followed by optimization and ranking that ultimately leads to the execution of the best service. This paper concentrates on combining optimization and ranking based on non-functional QoS parameters to evaluate its quality. The concept of optimization is carried out by ACO (Ant Colony Optimization algorithm. The optimization principle uses the concept of pheromone deposition and evaporation on the services. Ranking is done using performance index which is calculated dynamically from the non-functional QoS parameters. This ensures that the application based on this approach is efficient and fault tolerant. The result is obtained by measuring the performance of the services for multiple requests.

  9. Novel web service selection model based on discrete group search.

    Science.gov (United States)

    Zhai, Jie; Shao, Zhiqing; Guo, Yi; Zhang, Haiteng

    2014-01-01

    In our earlier work, we present a novel formal method for the semiautomatic verification of specifications and for describing web service composition components by using abstract concepts. After verification, the instantiations of components were selected to satisfy the complex service performance constraints. However, selecting an optimal instantiation, which comprises different candidate services for each generic service, from a large number of instantiations is difficult. Therefore, we present a new evolutionary approach on the basis of the discrete group search service (D-GSS) model. With regard to obtaining the optimal multiconstraint instantiation of the complex component, the D-GSS model has competitive performance compared with other service selection models in terms of accuracy, efficiency, and ability to solve high-dimensional service composition component problems. We propose the cost function and the discrete group search optimizer (D-GSO) algorithm and study the convergence of the D-GSS model through verification and test cases.

  10. Extended SOA to Enable Web Service Discovery on Non Functional Parameters

    Directory of Open Access Journals (Sweden)

    Vandan Tiwari Dr. Nirmal Dagdee Dr. Aruna Tiwari Divesh Dixit

    2012-04-01

    Full Text Available The current Service Oriented Architecture (SOA standards, namely the concept of Web services and service registry lacks mechanism for managing the services’ nonfunctional properties of Web Services. Currently there is no standard that is capable of accurately representing quality of service parameters of web services. Such non functional properties are expressed by the term “Quality of Service (QoS”. QoS for Web services is an important decisive factor for service selection. Therefore it is important to extend the SOA so that non-functional characteristics of a web service can be determined at run-time and consumers are bound to a service that best meet their functional as well as non-functional requirements. Major research challenges in discovering Web services include, differentiating between services that share similar functionalities, improving Quality of Service (QoS, and enabling clients to customize the discovery process. To enable QoS enabled web services discovery, it is needed that a third party (other than service provider and service broker monitors quality of web service. In this paper, an extended web services framework based on SOA for enabling Web Service discovery based on QoS parameters such as availability and response time is proposed thereby maintaining the appropriate dynamic values of these QoS parameters.

  11. Web services-based access to local clinical trial databases: a standards initiative of the Association of American Cancer Institutes.

    Science.gov (United States)

    Stahl, Douglas C; Evans, Richard M; Afrin, Lawrence B; DeTeresa, Richard M; Ko, Dave; Mitchell, Kevin

    2003-01-01

    Electronic discovery of the clinical trials being performed at a specific research center is a challenging task, which presently requires manual review of the center's locally maintained databases or web pages of protocol listings. Near real-time automated discovery of available trials would increase the efficiency and effectiveness of clinical trial searching, and would facilitate the development of new services for information providers and consumers. Automated discovery efforts to date have been hindered by issues such as disparate database schemas, vocabularies, and insufficient standards for easy intersystem exchange of high-level data, but adequate infrastructure now exists that make possible the development of applications for near real-time automated discovery of trials. This paper describes the current state (design and implementation) of the Web Services Specification for Publication and Discovery of Clinical Trials as developed by the Technology Task Force of the Association of American Cancer Institutes. The paper then briefly discusses a prototype web service-based application that implements the specification. Directions for evolution of this specification are also discussed.

  12. A new reference implementation of the PSICQUIC web service.

    Science.gov (United States)

    del-Toro, Noemi; Dumousseau, Marine; Orchard, Sandra; Jimenez, Rafael C; Galeota, Eugenia; Launay, Guillaume; Goll, Johannes; Breuer, Karin; Ono, Keiichiro; Salwinski, Lukasz; Hermjakob, Henning

    2013-07-01

    The Proteomics Standard Initiative Common QUery InterfaCe (PSICQUIC) specification was created by the Human Proteome Organization Proteomics Standards Initiative (HUPO-PSI) to enable computational access to molecular-interaction data resources by means of a standard Web Service and query language. Currently providing >150 million binary interaction evidences from 28 servers globally, the PSICQUIC interface allows the concurrent search of multiple molecular-interaction information resources using a single query. Here, we present an extension of the PSICQUIC specification (version 1.3), which has been released to be compliant with the enhanced standards in molecular interactions. The new release also includes a new reference implementation of the PSICQUIC server available to the data providers. It offers augmented web service capabilities and improves the user experience. PSICQUIC has been running for almost 5 years, with a user base growing from only 4 data providers to 28 (April 2013) allowing access to 151 310 109 binary interactions. The power of this web service is shown in PSICQUIC View web application, an example of how to simultaneously query, browse and download results from the different PSICQUIC servers. This application is free and open to all users with no login requirement (http://www.ebi.ac.uk/Tools/webservices/psicquic/view/main.xhtml).

  13. Increasing access to terrestrial ecology and remote sensing (MODIS) data through Web services and visualization tools

    Science.gov (United States)

    Santhana Vannan, S.; Cook, R. B.; Wei, Y.

    2012-12-01

    In recent years user access to data and information is increasingly handled through tools, services, and applications. Standards-based services have facilitated this development. These service-based methods to access data has boosted the use of data and in increasingly complex ways. The Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) has taken the approach of service-based access to data and visualization for distribution and visualization of its terrestrial ecology data, including MODIS (Moderate Resolution Imaging Spectroradiometer) remote sensing data products. The MODIS data products are highly useful for field research. The spectral, spatial and temporal characteristics of MODIS products have made them an important data source for analyzing key science questions relating to Earth system processes at multiple spatial and temporal scales. However, MODIS data volume and the complexity in data format make it less usable in some cases. To solve this usability issue, the ORNL DAAC has developed a system that prepares and distributes subsets of selected MODIS land products in a scale and format useful for field researchers. Web and Web service tools provide MODIS subsets in comma-delimited text format and in GIS compatible GeoTIFF format. Users can download and visualize MODIS subsets for a set of pre-defined locations, order MODIS subsets for any land location or automate the process of subset extraction using a SOAP-based Web service. The MODIS tools and services can be extended to support the large volume of data that would be produced by the various decadal survey missions. http://daac.ornl.gov/MODIS . The ORNL DAAC has also created a Web-based Spatial Data Access Tool (SDAT) that enables users to browse, visualize, and download a wide variety of geospatial data in various user-selected spatial/temporal extents, formats, and projections. SDAT is based on Open Geospatial Consortium (OGC) Web service standards that allows users to

  14. Research on Security Technology of Web Service%Web Services安全技术研究

    Institute of Scientific and Technical Information of China (English)

    朱创录

    2012-01-01

    Web Service的安全性在当前的应用中起到基础作用.在分析了Web Service安全现状的基础上,根据Web Service的主要安全需求,提出了安全的SOAP消息方法,主要采用文档对象的加密方法并且定义了数据加密的过程,给出了基于元素方式的数据加密的一个安全机制,可有效的保证SOAP消息的安全传输.%The security of Web Service is important. This article analyzes the current situation of its security and brings up a safe SOAP information method according to the main security needs of Web Service. That takes the measures of encrypting the document object and defines the data encryption. It can effectively guarantee that the SOAP information will be passed safely.

  15. A Compositive Information Collection Platform System Based on Web Service

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The aim is to solve the problem that how to share dispersive and heterogeneous data inside business information system or some other information source. On the basis of Web service, this paper adopts the notion of Data As Service to build service-oriented data integration architecture. According to this architecture, we develop data collection system which effectively integrates data from heterogeneous information source and present a uniform data view to end users by implementing sharing data from heterogeneous systems and information source .At last, this paper gives an example of a compositive information collection platform system.

  16. NGN的演进和Web Service技术%Evolution of NGN and Web Service Technology

    Institute of Scientific and Technical Information of China (English)

    薛海强; 薛海丽; 苏森

    2007-01-01

    开放和融合是网络发展的趋势.ITU提出了GII(Global Information Infrastructure)的概念模型,从企业和用户的视点描述了电信网络演进的方向.并提出了ICA(Information Communication Architecture),详细描述了GII概念模型中的中间件功能.同时,在计算机界,网格技术和Web Senrice技术结合,形成了OGSA(Open Grid Service Architecture)的架构.结合Web Service技术,GII、ICA的功能可以表示为Web Service的集合,网络提供给用户的服务可以是Web Service服务,或者是 Web Service组合后形成的更高粒度的服务.Web Service技术和NGN结合有利于网络的融合和开放,能够在传输网络之上形成一个业务网,必将促进NGN的发展.

  17. Dynamic Composition of Web Services based on Event Driven Approach in SOA

    Directory of Open Access Journals (Sweden)

    P.S. Ashok Kumar

    2014-08-01

    Full Text Available Dynamic Composition of Web services is a Key research in the arena of E-commerce. Enterprise applications are developed as a service provider in the web, some of the challenges we are faced by web services are most likely related to composition of services, security and Quality of Services (QoS. Within these challenges, composition of web service turns out to be a big arena of research, because it supports the integration and Interoperability of B2B applications or enterprise application or E-commerce application. Pragmatically dynamic composition of semantic web services specifies better results compared to the traditional method of discovering candidate services for composition. In this study we present the degree of matching and selection of web services are considered as a salient feature to the dynamic composition of web services.

  18. A model-driven approach for composing SAWSDL semantic Web services

    CERN Document Server

    Belouadha, Fatima-Zahra; Roudies, Ounsa

    2010-01-01

    Composing Web services is a convenient means of dealing with complex requests. However, the number of Web services on the Internet is increasing. This explains the growing interest in composing Web services automatically. Nevertheless, the Web services' semantics is necessary for any dynamic composition process. In this article, we present an MDA approach to develop and compose SAWSDL semantic Web services. To model Web services, we use a UML profile which is independent of the description standards. The SAWSDL interface files are generated by using transformation rules. To model the behavior of a composite Web service and generate its executable BPEL file, we use the BPMN notation in a platform of modeling and implementing business process. The main contribution of this work is the easy and extensible solution to a model-driven development of the semantic atomic and composite Web services.

  19. A model-driven approach for composing SAWSDL semantic Web services

    Directory of Open Access Journals (Sweden)

    Fatima-Zahra Belouadha

    2010-03-01

    Full Text Available Composing Web services is a convenient means of dealing with complex requests. However, the number of Web services on the Internet is increasing. This explains the growing interest in composing Web services automatically. Nevertheless, the Web services' semantics is necessary for any dynamic composition process. In this article, we present an MDA approach to develop and compose SAWSDL semantic Web services. To model Web services, we use a UML profile which is independent of the description standards. The SAWSDL interface files are generated by using transformation rules. To model the behavior of a composite Web service and generate its executable BPEL file, we use the BPMN notation in a platform of modeling and implementing business process. The main contribution of this work is the easy and extensible solution to a model-driven development of the semantic atomic and composite Web services.

  20. A Study of Network Traffic Pattern and its Impact on Performance in Implementation of Web Services

    Directory of Open Access Journals (Sweden)

    K. Velmurugan

    2012-01-01

    Full Text Available Problem statement: Currently it is evident that the web service is emerging as a solution for business applications and deployment of web services witnesses exponential growth. Web services rely on networks particularly internet for implementing and consuming them in different applications. Whenever a network is involved in a software system, network traffic payload measurement and communication pattern play a key role in determining and enhancing performance of the software system. Thus, this study emphasizes the need for network traffic payload measurement in evaluating performance of implementation of web services. Approach: Further empirical measurement of the network traffic payload in implementation of web services is carried out to analyze performance of realization of web services. In this work, the web service realization is done through a model with three-tier approach which is suitable for business applications. Results and Conclusion: This study reports empirical results of network traffic involved in different implementations of web services.

  1. Design for Supermarket on Web Service%基于Web Service的网上超市的设计

    Institute of Scientific and Technical Information of China (English)

    董福才; 马骋

    2003-01-01

    近年来形成的Internet 技术--Web Service 技术已被称为下一代电子商务的核心.首先讨论Web Service及关键技术,然后阐述了Web Service技术的网上超市应用框架及实现.

  2. Interactive Web service choice-making based on extended QoS model

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Quality of Service (QoS) is a key factor in Web service advertising, choosing and runtime monitoring. Web service QoS is multi-faceted, fuzzy and dynamic. Current researches focus on implementation level performance assurance, ignoring domain specific or application level metrics which are also very important to service users. Industry Web service standards lack QoS expression. The support for QoS based service choice-making is very limited. We proposed an extended Web service QoS model based on configurable fuzzy synthetic evaluation system. Web service QoS is evaluated dynamically according to the service context. A QoS requirement description model is also given for service QoS requirement definition. An interactive Web service choice-making process is described, which takes QoS as a key factor when choosing from functionally equivalent services.

  3. Web services in the U.S. geological survey streamstats web application

    Science.gov (United States)

    Guthrie, J.D.; Dartiguenave, C.; Ries, Kernell G.

    2009-01-01

    StreamStats is a U.S. Geological Survey Web-based GIS application developed as a tool for waterresources planning and management, engineering design, and other applications. StreamStats' primary functionality allows users to obtain drainage-basin boundaries, basin characteristics, and streamflow statistics for gaged and ungaged sites. Recently, Web services have been developed that provide the capability to remote users and applications to access comprehensive GIS tools that are available in StreamStats, including delineating drainage-basin boundaries, computing basin characteristics, estimating streamflow statistics for user-selected locations, and determining point features that coincide with a National Hydrography Dataset (NHD) reach address. For the state of Kentucky, a web service also has been developed that provides users the ability to estimate daily time series of drainage-basin average values of daily precipitation and temperature. The use of web services allows the user to take full advantage of the datasets and processes behind the Stream Stats application without having to develop and maintain them. ?? 2009 IEEE.

  4. Designing and Implementing Weather Generators as Web Services

    Directory of Open Access Journals (Sweden)

    Rassarin Chinnachodteeranun

    2016-12-01

    Full Text Available Climate and weather realizations are essential inputs for simulating crop growth and yields to analyze the risks associated with future conditions. To simplify the procedure of generating weather realizations and make them available over the Internet, we implemented novel mechanisms for providing weather generators as web services, as well as a mechanism for sharing identical weather realizations given a climatological information. A web service for preparing long-term climate data was implemented based on an international standard, Sensor Observation Service (SOS. The weather generator services, which are the core components of the framework, analyze climatological data, and can take seasonal climate forecasts as inputs for generating weather realizations. The generated weather realizations are encoded in a standard format, which are ready for use to crop modeling. All outputs are generated in SOS standard, which broadens the extent of data sharing and interoperability with other sectoral applications, e.g., water resources management. These services facilitate the development of other applications requiring input weather realizations, as these can be obtained easily by just calling the service. The workload of analysts related to data preparation and handling of legacy weather generator programs can be reduced. The architectural design and implementation presented here can be used as a prototype for constructing further services on top of an interoperable sensor network system.

  5. Pragmatic service development and customisation with the CEDA OGC Web Services framework

    Science.gov (United States)

    Pascoe, Stephen; Stephens, Ag; Lowe, Dominic

    2010-05-01

    The CEDA OGC Web Services framework (COWS) emphasises rapid service development by providing a lightweight layer of OGC web service logic on top of Pylons, a mature web application framework for the Python language. This approach gives developers a flexible web service development environment without compromising access to the full range of web application tools and patterns: Model-View-Controller paradigm, XML templating, Object-Relational-Mapper integration and authentication/authorization. We have found this approach useful for exploring evolving standards and implementing protocol extensions to meet the requirements of operational deployments. This paper outlines how COWS is being used to implement customised WMS, WCS, WFS and WPS services in a variety of web applications from experimental prototypes to load-balanced cluster deployments serving 10-100 simultaneous users. In particular we will cover 1) The use of Climate Science Modeling Language (CSML) in complex-feature aware WMS, WCS and WFS services, 2) Extending WMS to support applications with features specific to earth system science and 3) A cluster-enabled Web Processing Service (WPS) supporting asynchronous data processing. The COWS WPS underpins all backend services in the UK Climate Projections User Interface where users can extract, plot and further process outputs from a multi-dimensional probabilistic climate model dataset. The COWS WPS supports cluster job execution, result caching, execution time estimation and user management. The COWS WMS and WCS components drive the project-specific NCEO and QESDI portals developed by the British Atmospheric Data Centre. These portals use CSML as a backend description format and implement features such as multiple WMS layer dimensions and climatology axes that are beyond the scope of general purpose GIS tools and yet vital for atmospheric science applications.

  6. Investigations into Library Web-Scale Discovery Services

    Directory of Open Access Journals (Sweden)

    Jason Vaughan

    2008-03-01

    Full Text Available Web-scale discovery services for libraries provide deep discovery to a library’s local and licensed content, and represent an evolution, perhaps a revolution, for end user information discovery as pertains to library collections.  This article frames the topic of web-scale discovery, and begins by illuminating web-scale discovery from an academic library’s perspective – that is, the internal perspective seeking widespread staff participation in the discovery conversation.  This included the creation of a discovery task force, a group which educated library staff, conducted internal staff surveys, and gathered observations from early adopters.  The article next addresses the substantial research conducted with library vendors which have developed these services.  Such work included drafting of multiple comprehensive question lists distributed to the vendors, onsite vendor visits, and continual tracking of service enhancements.  Together, feedback gained from library staff, insights arrived at by the Discovery Task Force, and information gathered from vendors collectively informed the recommendation of a service for the UNLV Libraries.

  7. Generic Web Services: A Step Towards Green Computing

    Directory of Open Access Journals (Sweden)

    Mydhili K Nair

    2009-11-01

    Full Text Available Software as a Service (SaaS is a buzzword especially in the realm of Cloud Computing. We can reduce the number of applications deployed on the data-centers by using similar applications hosted by the SaaS providers. Thus, “reusability” of a SaaS is a key-point of focus promoting the same code-base of an application serving multiple clients. This reduces the need for more storage space and computational power in the data-centers thus aligning the SaaS architecture to a “greener” computing paradigm. In this paper, we provide a prototype implementation framework, which uses the same web service to Register and Report the results of a backend Network Monitoring (NM as well as Weather Monitoring application. We have designed and developed this “Generic Web Services Framework” as well as both the backend applications. The NM application is done using both Mobile Agents and SNMP and the WM application is implemented using Temperature Sensors. This paper aims to give a prototype implementation as proof of SaaS maturity levels of a generic / reusable web service thus orienting towards green computing.

  8. A Framework for Automated Testing of JavaScript Web Applications

    DEFF Research Database (Denmark)

    Artzi, Shay; Dolby, Julian; Jensen, Simon Holm;

    2011-01-01

    Current practice in testing JavaScript web applications requires manual construction of test cases, which is difficult and tedious. We present a framework for feedback-directed automated test generation for JavaScript in which execution is monitored to collect information that directs the test...... generator towards inputs that yield increased coverage. We implemented several instantiations of the framework, corresponding to variations on feedback-directed random testing, in a tool called Artemis. Experiments on a suite of JavaScript applications demonstrate that a simple instantiation...

  9. The challenge of automated tutoring in Web-based learning environments for information retrieval instruction

    Directory of Open Access Journals (Sweden)

    Sormunen Eero; Pennanen

    2004-01-01

    Full Text Available The need to enhance information literacy education increases demand for effective Web-based learning environments for information retrieval instruction. The paper introduces the Query Performance Analyser, a unique instructional tool for information retrieval learning environments. On top of an information retrieval system and within a given search assignment, the Query Performance Analyser supports learning by instantly visualizing achieved query performance. Although the Query Performance Analyser is a useful tool in training searching skills, performance feedback is not enough for learners practicing alone in Web-based learning environments. The paper reports the findings of a log analysis on user problems in exercising Boolean and best-match queries. A blueprint of an automated tutoring system for IR instruction is presented.

  10. A comparative study and classification on web service security testing approaches

    Directory of Open Access Journals (Sweden)

    Azadeh Esfandyari

    Full Text Available Web Services testing is essential to achieve the goal of scalable, robust and successful Web Services especially in business environment where maybe exist hundreds of Web Services working together. This Relatively new way of software development brings ou ...

  11. WebGIS based community services architecture by griddization managements and crowdsourcing services

    Science.gov (United States)

    Wang, Haiyin; Wan, Jianhua; Zeng, Zhe; Zhou, Shengchuan

    2016-11-01

    Along with the fast economic development of cities, rapid urbanization, population surge, in China, the social community service mechanisms need to be rationalized and the policy standards need to be unified, which results in various types of conflicts and challenges for community services of government. Based on the WebGIS technology, the article provides a community service architecture by gridding management and crowdsourcing service. The WEBGIS service architecture includes two parts: the cloud part and the mobile part. The cloud part refers to community service centres, which can instantaneously response the emergency, visualize the scene of the emergency, and analyse the data from the emergency. The mobile part refers to the mobile terminal, which can call the centre, report the event, collect data and verify the feedback. This WebGIS based community service systems for Huangdao District of Qingdao, were awarded the “2015’ national innovation of social governance case of typical cases”.

  12. Implementation Method of Non-Intrusive Monitoring Mechanism for Web Services Testing

    Institute of Scientific and Technical Information of China (English)

    Lun Cai; Jing-Ling Liu; Xi Wang

    2009-01-01

    In web services testing, accessing the interactive contents of measured services and the information of service condition accurately are the key issues of system design and realization. A non-intrusive solution based on axis2 is presented to overcome the difficulty of the information retrieval in web service testing. It can be plugged in server side or client side freely to test pre-deployed or deployed web services. Moreover, it provides a monitoring interface and the corresponding subscription publication mechanism for users based on web services to support the quality assurance grounded on service-oriented architecture (SOA) application service.

  13. 基于ZING的Web服务建模与验证%Modeling and verification for Web services based on ZING

    Institute of Scientific and Technical Information of China (English)

    陆晶晶; 骆翔宇

    2011-01-01

    为了验证Web服务的正确性和可靠性等性质以及提高Web服务流程验证的自动化程度,提出了一种适合构造BPEL4WS(Web服务的业务流程执行语言)结构模型的输入输出标记迁移系统(I/OLTS)作为中间形式化模型,将BPEL转化为中间形式模型I/OLTS,然后再转化为软件模型检测工具ZING的输入语言的转化算法,并应用ZING对Web服务的正确性进行验证.通过该建模和转换算法,可有效提高Web服务流程验证的自动化程度,简化转化过程中复杂繁琐的人工编码操作.%To verify the correctness and reliability of Web services and improve the automation in the process validation of Web services, the input/output labeled transition system (I/OLTS) as an intermediate formal model that was suitable to Business Process Execution Language for Web Services(BPEL4WS) structure model was proposed ,and an algorithm was designed to transform BPEL into I/OLTS, which would be further transformed into the input language of the software model checking tool ZING, such that the correctness and reliability of Web services could be verified via ZING. The automation in the process validation of web services is improved by the modeling and the transformation algorithm, and a lot of tedious and complex manual operation in the transformation process is simplified.

  14. Web Services for the Management of Persistent Online Game Factions

    DEFF Research Database (Denmark)

    Deliege, Francois; Zimanyi, Esteban

    2006-01-01

    Star Wars Combine is a game involving thousands of players in a virtual world. Each player impersonates a character that continues evolving even when the player is not connected. Players have formed groups, called factions, that are self-organized. The more members a faction has, the more...... complicated to manage it becomes. The goal of this work is to create an infrastructure to allow faction management tools to automatically update their data with the information maintained on the game server. The web services technology is chosen for the various advantages it offers. While this technology...... is already widely accepted in the business world, its use in a game context is totally new. It seems that web services have gained their place in the game world and will continue to be developed. Hopefully, this experiment will convince other game designers to adapt their platforms in a similar manner....

  15. Secure Communication and Access Control for Mobile Web Service Provisioning

    CERN Document Server

    Srirama, Satish Narayana

    2010-01-01

    It is now feasible to host basic web services on a smart phone due to the advances in wireless devices and mobile communication technologies. While the applications are quite welcoming, the ability to provide secure and reliable communication in the vulnerable and volatile mobile ad-hoc topologies is vastly becoming necessary. The paper mainly addresses the details and issues in providing secured communication and access control for the mobile web service provisioning domain. While the basic message-level security can be provided, providing proper access control mechanisms for the Mobile Host still poses a great challenge. This paper discusses details of secure communication and proposes the distributed semantics-based authorization mechanism.

  16. Applying Web Services with Mobile Agents for Computer Network Management

    Directory of Open Access Journals (Sweden)

    Mydhili K.Nair

    2011-03-01

    Full Text Available The exponential rise in complexity of the underlying network elements of a computer network makes itsManagement an intricate, multifaceted and complex problem to solve. With every passing decade, newtechnologies are developed to ease this problem of Network Management. The last decade of the premillenniumera saw the peak of CORBA and Mobile Agent Based implementations, while the first decadeof post millennium saw the emergence of Web Services. All of these technologies evolved as independent,self-contained implementation streams. There is a genuine dearth in finding authentic research outcomeswhere quantifiable, measureable benefits of convergence of these technologies applied to NetworkManagement are put forth. This paper aims to fill this research gap. Here we put forth the experimentalresults obtained of a framework we developed in-house for Network Management that combined twoseemingly divergent distributed computing technologies, namely, Web Services and Mobile Agents.

  17. THE NEW PURCHASING SERVICE PAGE NOW ON THE WEB!

    CERN Multimedia

    SPL Division

    2000-01-01

    Users of CERN's Purchasing Service are encouraged to visit the new Purchasing Service web page, accessible from the CERN homepage or directly at: http://spl-purchasing.web.cern.ch/spl-purchasing/ There, you will find answers to questions such as: Who are the buyers? What do I need to know before creating a DAI? How many offers do I need? Where shall I send the offer I received? I know the amount of my future requirement, how do I proceed? How are contracts adjudicated at CERN? Which exhibitions and visits of Member State companies are foreseen in the future? A company I know is interested in making a presentation at CERN, who should they contact? Additionally, you will find information concerning: The Purchasing procedures Market Surveys and Invitations to Tender The Industrial Liaison Officers appointed in each Member State The Purchasing Broker at CERN

  18. Extending Java for High-Level Web Service Construction

    DEFF Research Database (Denmark)

    Christensen, Aske Simon; Møller, Anders; Schwartzbach, Michael Ignatieff

    2003-01-01

    We incorporate innovations from the project into the Java language to provide high-level features for Web service programming. The resulting language, JWIG, contains an advanced session model and a flexible mechanism for dynamic construction of XML documents, in particular XHTML. To support program...... development we provide a suite of program analyses that at compile time verify for a given program that no runtime errors can occur while building documents or receiving form input, and that all documents being shown are valid according to the document type definition for XHTML 1.0.We compare JWIG...... with Servlets and JSP which are widely used Web service development platforms. Our implementation and evaluation of JWIG indicate that the language extensions can simplify the program structure and that the analyses are sufficiently fast and precise to be practically useful....

  19. mGene.web: a web service for accurate computational gene finding.

    Science.gov (United States)

    Schweikert, Gabriele; Behr, Jonas; Zien, Alexander; Zeller, Georg; Ong, Cheng Soon; Sonnenburg, Sören; Rätsch, Gunnar

    2009-07-01

    We describe mGene.web, a web service for the genome-wide prediction of protein coding genes from eukaryotic DNA sequences. It offers pre-trained models for the recognition of gene structures including untranslated regions in an increasing number of organisms. With mGene.web, users have the additional possibility to train the system with their own data for other organisms on the push of a button, a functionality that will greatly accelerate the annotation of newly sequenced genomes. The system is built in a highly modular way, such that individual components of the framework, like the promoter prediction tool or the splice site predictor, can be used autonomously. The underlying gene finding system mGene is based on discriminative machine learning techniques and its high accuracy has been demonstrated in an international competition on nematode genomes. mGene.web is available at http://www.mgene.org/web, it is free of charge and can be used for eukaryotic genomes of small to moderate size (several hundred Mbp).

  20. Pembuatan Aplikasi Web Manajemen Laundry dan Integrasi Data dengan Web Service

    Directory of Open Access Journals (Sweden)

    Refika Khoirunnisa

    2016-01-01

    Full Text Available Selama ini banyak dari perusahaan di bidang jasa laundry masih menggunakan pencatatan secara manual seperti menggunakan buku, sehingga setiap data tidak terintegrasi secara waktu-nyata. Oleh sebab itu, perlu dibuat penelitian untuk merancang sebuah sistem terkomputerisasi yang dapat mempermudah pencatatan dan pengolahan data keuangan laundry. Pembuatan Aplikasi Web Manajemen Laundry menggunakan bahasa pemrograman PHP, HTML, CSS, JavaScript dan basisdata MySQL sebagai tempat penyimpanan data. Aplikasi ini merupakan aplikasi yang terintegrasi dengan aplikasi melalui sebuah teknologi yang disebut web service. Aplikasi Web Manajemen Laundry dikembangkan dengan menggunakan metode RAD (Rapid Application Development yang terdiri dari tahap perencanaan kebutuhan, proses perancangan, implementasi, dan tahap pengujian. Dari hasil penelitian dapat disimpulkan bahwa Aplikasi Web Manajemen Laundry memiliki fitur yang berfungsi untuk mempermudah pencatatan dan pengolahan data secara akurat dan waktu-nyata. Fitur-fitur utama dari aplikasi ini diantaranya adalah pengolahan data transaksi, pengeluaran, dan laporan laba/rugi. Dalam menunjang fitur-fitur utama agar dapat bekerja dengan baik maka terdapat fitur pendukung yaitu pengolahan data pelanggan dan data pengguna aplikasi. Berdasarkan pengujian dengan menggunakan metode black-box, seluruh fungsi menu yang ada dalam aplikasi web telah berhasil dan berjalan sesuai dengan kebutuhan.

  1. A review of Fuzzy Based QoS Web Service Discovery

    Directory of Open Access Journals (Sweden)

    R.Buvanesvari

    2013-03-01

    Full Text Available Recently, web service has become an important issue for developers. Selecting a specific service is a crucial task. Some approaches develop extensive description and publication mechanisms while others use syntactic, semantic, and structural reviews of Web service specifications. It is very crucial for finding the most suitable web service from a large collection of web services for successful execution of applications. In many cases, the value of a QoS property may not be precisely defined. Recently, fuzzy is considered as the dominant approaches in Web services which can deal with fuzzy constraints have been proposed. Therefore fuzzy logic can be applied to support for representing such imprecise QoS constraints. In this paper, we will present an overview which focus on developing fuzzy-based approach for Web service discovery. This paper also describes the web service challenges on fuzzy mechanism that summarized and analyzed in order to assess their benefits and limitations.

  2. Web-Based Expert System for Civil Service Regulations: RCSES

    CERN Document Server

    Hogo, Mofreh; Mousa, Fouad

    2010-01-01

    Internet and expert systems have offered new ways of sharing and distributing knowledge, but there is a lack of researches in the area of web based expert systems. This paper introduces a development of a web-based expert system for the regulations of civil service in the Kingdom of Saudi Arabia named as RCSES. It is the first time to develop such system (application of civil service regulations) as well the development of it using web based approach. The proposed system considers 17 regulations of the civil service system. The different phases of developing the RCSES system are presented, as knowledge acquiring and selection, ontology and knowledge representations using XML format. XML Rule-based knowledge sources and the inference mechanisms were implemented using ASP.net technique. An interactive tool for entering the ontology and knowledge base, and the inferencing was built. It gives the ability to use, modify, update, and extend the existing knowledge base in an easy way. The knowledge was validated by ...

  3. Extending Interactive Web Services for Improving Presentation Level Integration in Web Portals

    Institute of Scientific and Technical Information of China (English)

    Jing-Yu Song; Jun Wei; Shu-Chao Wan; Tao Huang

    2006-01-01

    Presentation level integration now becomes an important and fast growing trend in enterprise computing.Portal-based composite applications use portlet and interactive web service, which usually offers several portlets, as their basic constituents. Hence, portlet description and discovery are the key issues that have to be considered for the development of portal-based composite applications. This paper proposes a novel concept POI (Presentation Oriented Interface) to describe the presentation features of a portlet, so that interactive web services may be extended to facilitate the selection and interoperation of portlets. Portlet discovery can be effectively achieved based on the calculation of POI similarity that considers both type and structure similarity. Experiments show that the proposed approach can improve the satisfaction of portlet discovery, and also facilitate the portlet interoperation, thereby achieving better application integration at presentation level.

  4. Analysis of Web Service Substitution%Web服务的替换分析

    Institute of Scientific and Technical Information of China (English)

    党敏侠

    2012-01-01

    Web服务合成是Web服务研究领域的热点问题,Web服务的替换与Web服务合成密切相关。Web服务的替换对于Web服务合成系统的健壮性是非常重要的。文章使用进程代数作为形式化的分析工具描述Web服务,为Web服务建模,并提出为保证替换后服务合成仍然是正确的所要满足的约束条件。%Web services composition is a key issue in web service architecture and web service research area.In this paper,we present a design method for web service composition.Upon our design method,we study substitution of web service which is important for robustness of web service composition.We use process algebra as formalism foundation modeling and specifying web services and reasoning on behavioral features of web services composition.As to the problem of how to substitute a component web service,once specifications of component web services are given,any new selected web services can substitute old component service and take part in composition successfully in the case that they satisfy criteria we propose.

  5. On the best learning algorithm for web services response time prediction

    DEFF Research Database (Denmark)

    Madsen, Henrik; Albu, Razvan-Daniel; Popentiu-Vladicescu, Florin

    2013-01-01

    an application is. A Web service is better imagined as an application "segment," or better as a program enabler. Performance is an important quality aspect of Web services because of their distributed nature. Predicting the response of web services during their operation is very important.......In this article we will examine the effect of different learning algorithms, while training the MLP (Multilayer Perceptron) with the intention of predicting web services response time. Web services do not necessitate a user interface. This may seem contradictory to most people's concept of what...

  6. A fully automated TerraSAR-X based flood service

    Science.gov (United States)

    Martinis, Sandro; Kersten, Jens; Twele, André

    2015-06-01

    In this paper, a fully automated processing chain for near real-time flood detection using high resolution TerraSAR-X Synthetic Aperture Radar (SAR) data is presented. The processing chain including SAR data pre-processing, computation and adaption of global auxiliary data, unsupervised initialization of the classification as well as post-classification refinement by using a fuzzy logic-based approach is automatically triggered after satellite data delivery. The dissemination of flood maps resulting from this service is performed through an online service which can be activated on-demand for emergency response purposes (i.e., when a flood situation evolves). The classification methodology is based on previous work of the authors but was substantially refined and extended for robustness and transferability to guarantee high classification accuracy under different environmental conditions and sensor configurations. With respect to accuracy and computational effort, experiments performed on a data set of 175 different TerraSAR-X scenes acquired during flooding all over the world with different sensor configurations confirm the robustness and effectiveness of the proposed flood mapping service. These promising results have been further confirmed by means of an in-depth validation performed for three study sites in Germany, Thailand, and Albania/Montenegro.

  7. Programming Amazon Web Services S3, EC2, SQS, FPS, and SimpleDB

    CERN Document Server

    Murty, James

    2009-01-01

    With this book, you'll learn how companies can take advantage of Amazon Web Services (AWS) to rent" computing power, data storage and bandwidth on Amazon's vast network infrastructure. Programming Amazon Web Services gives developers the background and technical detail they need for using Amazon's subscription-based Simple Storage Service (S3), Elastic Compute Cloud (EC2), Simple Queue Service (SQS), Flexible Payments Service (FPS), and SimpleDB to build web-scale business applications. "

  8. SAS- Semantic Annotation Service for Geoscience resources on the web

    Science.gov (United States)

    Elag, M.; Kumar, P.; Marini, L.; Li, R.; Jiang, P.

    2015-12-01

    There is a growing need for increased integration across the data and model resources that are disseminated on the web to advance their reuse across different earth science applications. Meaningful reuse of resources requires semantic metadata to realize the semantic web vision for allowing pragmatic linkage and integration among resources. Semantic metadata associates standard metadata with resources to turn them into semantically-enabled resources on the web. However, the lack of a common standardized metadata framework as well as the uncoordinated use of metadata fields across different geo-information systems, has led to a situation in which standards and related Standard Names abound. To address this need, we have designed SAS to provide a bridge between the core ontologies required to annotate resources and information systems in order to enable queries and analysis over annotation from a single environment (web). SAS is one of the services that are provided by the Geosematnic framework, which is a decentralized semantic framework to support the integration between models and data and allow semantically heterogeneous to interact with minimum human intervention. Here we present the design of SAS and demonstrate its application for annotating data and models. First we describe how predicates and their attributes are extracted from standards and ingested in the knowledge-base of the Geosemantic framework. Then we illustrate the application of SAS in annotating data managed by SEAD and annotating simulation models that have web interface. SAS is a step in a broader approach to raise the quality of geoscience data and models that are published on the web and allow users to better search, access, and use of the existing resources based on standard vocabularies that are encoded and published using semantic technologies.

  9. 77 FR 23643 - Advance Notice of Implementation of Full-Service Intelligent Mail Required for Automation Prices

    Science.gov (United States)

    2012-04-20

    ... 111 Advance Notice of Implementation of Full-Service Intelligent Mail Required for Automation Prices... Postal Service is planning to move to the Full-Service Intelligent Mail option to access automation... barcode (IMb\\TM\\) options for automation discounts. The options included the ``Full-Service''...

  10. Towards a Unifying View of QoS-Enhanced Web Service Description and Discovery Approaches

    CERN Document Server

    Petrova-Antonova, Dessislava; 10.4204/EPTCS.2.8

    2009-01-01

    The number of web services increased vastly in the last years. Various providers offer web services with the same functionality, so for web service consumers it is getting more complicated to select the web service, which best fits their requirements. That is why a lot of the research efforts point to discover semantic means for describing web services taking into account not only functional characteristics of services, but also the quality of service (QoS) properties such as availability, reliability, response time, trust, etc. This motivated us to research current approaches presenting complete solutions for QoS enabled web service description, publication and discovery. In this paper we present comparative analysis of these approaches according to their common principals. Based on such analysis we extract the essential aspects from them and propose a pattern for the development of QoS-aware service-oriented architectures.

  11. Analyzing Web 2.0 Integration with Next Generation Networks for Services Rendering

    CERN Document Server

    Lakhtaria, Kamaljit I

    2010-01-01

    The Next Generation Networks (NGN) aims to integrate for IP-based telecom infrastructures and provide most advance & high speed emerging value added services. NGN capable to provide higher innovative services, these services will able to integrate communication and Web service into a single platform. IP Multimedia Subsystem, a NGN leading technology, enables a variety of NGN-compliant communications services to interoperate while being accessed through different kinds of access networks, preferably broadband. IMS–NGN services essential by both consumer and corporate users are by now used to access services, even communications services through the web and web-based communities and social networks, It is key for success of IMS-based services to be provided with efficient web access, so users can benefit from those new services by using web-based applications and user interfaces, not only NGN-IMS User Equipments and SIP protocol. Many Service are under planning which provided only under convergence of ...

  12. Design & Deploy Web 2.0 enable services over Next Generation Network Platform

    CERN Document Server

    Lakhtaria, Kamaljit I; 10.5121/ijdms.2010.2305

    2010-01-01

    The Next Generation Networks (NGN) aims to integrate for IP-based telecom infrastructures and provide most advance & high speed emerging value added services. NGN capable to provide higher innovative services, these services will able to integrate communication and Web service into a single platform. IP Multimedia Subsystem, a NGN leading technology, enables a variety of NGN-compliant communications services to interoperate while being accessed through different kinds of access networks, preferably broadband. IMS–NGN services essential by both consumer and corporate users are by now used to access services, even communications services through the web and web-based communities and social networks, It is key for success of IMS-based services to be provided with efficient web access, so users can benefit from those new services by using web-based applications and user interfaces, not only NGN-IMS User Equipments and SIP protocol. Many Service are under planning which provided only under convergence of ...

  13. Stakeholder Expectations of Service Quality in a University Web Portal

    Science.gov (United States)

    Tate, Mary; Evermann, Joerg; Hope, Beverley; Barnes, Stuart

    Online service quality is a much-studied concept. There is considerable evidence that user expectations and perceptions of self-service and online service quality differ in different business domains. In addition, the nature of online services is continually changing and universities have been at the forefront of this change, with university websites increasingly acting as a portal for a wide range of online transactions for a wide range of stakeholders. In this qualitative study, we conduct focus groups with a range of stakeholders in a university web portal. Our study offers a number of insights into the changing nature of the relationship between organisations and customers. New technologies are influencing customer expectations. Customers increasingly expect organisations to have integrated information systems, and to utilise new technologies such as SMS and web portals. Organisations can be slow to adopt a customer-centric viewpoint, and persist in providing interfaces that are inconsistent or require inside knowledge of organisational structures and processes. This has a negative effect on customer perceptions.

  14. A UDDI Search Engine for SVG Federated Medical Imaging Web Services

    Directory of Open Access Journals (Sweden)

    Sabah Mohammed

    2006-01-01

    Full Text Available With more and more medical web services appearing on the web, web service’s discovery mechanism becomes essential. UDDI is an online registry standard to facilitate the discovery of business partners and services. However, most medical imaging applications exist within their own protected domain and were never designed to participate and operate with other applications across the web. However, private UDDI registries in federated organizations should be able to share the service descriptions as well as to access them if they are authorized. The new initiatives on Federated Web Services Identity Management can resolve a range of both technical and political barriers to enable wide-scale participation and interoperation of separate domains into a singular, robust user experience. However, there is no widely acceptable standard for federated web services and most of the available venders frameworks concentrate only on the security issue of the federation leaving the issue of searching and discovering web services largely primitive. Federated web services security and web services searching are uniquely intertwined, mutually reliant on each other and are poised to finally solve a long-running problem in both IT and systems security. Traditional keyword search is insufficient for web services search as the very small text fragments in web services are unsuitable for keyword search and the underlying structure and semantics of the web service are not exploited. Engineering solutions that address the security and accessibility concerns of web services, however, is a challenging task. This article introduces an extension to the traditional UDDI that enables sophisticated types of searching based on a lightweight web services federated security infrastructure.

  15. A Survey of Sensor Web Services for the Smart Grid

    Directory of Open Access Journals (Sweden)

    Omar Asad

    2013-03-01

    Full Text Available The broad use ofWireless Sensor Networks (WSN in various fields have resulted in growing demand for advanced data collection and querying mechanisms embedded in the sensor node. Sensor Web Services (SWS have recently emerged as a promising tool to enable external machines to have access to the information collected by public sensor webs. Machine-to-machine interactions or wireless sensor and actor networks can take advantage of this platform-independent technology to develop diverse smart grid applications. In this survey, we first briefly present the state of the art in SWS technology by describing the techniques for customizing web services to fit the sensor node capabilities such as customizing the WSDL file, compressing XML documents and redesigning TCP protocol. Then, we survey the studies that have utilized the SWS technology in smart grid applications. These studies have shown that SWS provide energy management capabilities to the consumers and the utilities, and they are well suited for smart grid integrated smart home solutions.

  16. Geovisualization in the HydroProg web map service

    Science.gov (United States)

    Spallek, Waldemar; Wieczorek, Malgorzata; Szymanowski, Mariusz; Niedzielski, Tomasz; Swierczynska, Malgorzata

    2016-04-01

    The HydroProg system, built at the University of Wroclaw (Poland) in frame of the research project no. 2011/01/D/ST10/04171 financed by the National Science Centre of Poland, has been designed for computing predictions of river stages in real time on a basis of multimodelling. This experimental system works on the upper Nysa Klodzka basin (SW Poland) above the gauge in the town of Bardo, with the catchment area of 1744 square kilometres. The system operates in association with the Local System for Flood Monitoring of Klodzko County (LSOP), and produces hydrograph prognoses as well as inundation predictions. For presenting the up-to-date predictions and their statistics in the online mode, the dedicated real-time web map service has been designed. Geovisualisation in the HydroProg map service concerns: interactive maps of study area, interactive spaghetti hydrograms of water level forecasts along with observed river stages, animated images of inundation. The LSOP network offers a high spatial and temporal resolution of observations, as the length of the sampling interval is equal to 15 minutes. The main environmental elements related to hydrological modelling are shown on the main map. This includes elevation data (hillshading and hypsometric tints), rivers and reservoirs as well as catchment boundaries. Furthermore, we added main towns, roads as well as political and administrative boundaries for better map understanding. The web map was designed as a multi-scale representation, with levels of detail and zooming according to scales: 1:100 000, 1:250 000 and 1:500 000. Observations of water level in LSOP are shown on interactive hydrographs for each gauge. Additionally, predictions and some of their statistical characteristics (like prediction errors and Nash-Sutcliffe efficiency) are shown for selected gauges. Finally, predictions of inundation are presented on animated maps which have been added for four experimental sites. The HydroProg system is a strictly

  17. Run-time revenue maximization for composite web services with response time commitments

    NARCIS (Netherlands)

    Živković, M.; Bosman, J.W.; Berg, H. van den; Mei, R. van der; Meeuwissen, H.B.; Núñez-Queija, R.

    2012-01-01

    We investigate dynamic decision mechanisms for composite web services maximizing the expected revenue for the providers of composite services. A composite web service is represented by a (sequential) workflow, and for each task within this workflow, a number of service alternatives may be available.

  18. WSC-06: The Web Service Challenge; in Proceedings of the Web Service Challenge

    NARCIS (Netherlands)

    Blake, M.B.; Cheung, W.K.W.; Wombacher, A.

    2006-01-01

    In today’s businesses, there is a trend that serviceoriented architecture (SOA) is evolving into a popular architectural paradigm for IT infrastructure. SOA allows companies’ software systems to be shared as networkenabled electronic services with their commonly specified interfaces. Service discove

  19. A topic modeling approach for web service annotation

    Directory of Open Access Journals (Sweden)

    Leandro Ordóñez-Ante

    2014-06-01

    Full Text Available The actual implementation of semantic-based mechanisms for service retrieval has been restricted, given the resource-intensive procedure involved in the formal specification of services, which generally comprises associating semantic annotations to their documentation sources. Typically, developer performs such a procedure by hand, requiring specialized knowledge on models for semantic description of services (e.g. OWL-S, WSMO, SAWSDL, as well as formal specifications of knowledge. Thus, this semantic-based service description procedure turns out to be a cumbersome and error-prone task. This paper introduces a proposal for service annotation, based on processing web service documentation for extracting information regarding its offered capabilities. By uncovering the hidden semantic structure of such information through statistical analysis techniques, we are able to associate meaningful annotations to the services operations/resources, while grouping those operations into non-exclusive semantic related categories. This research paper belongs to the TelComp 2.0 project, which Colciencas and University of Cauca founded in cooperation.

  20. Research on user-aware QoS based Web services composition

    Institute of Scientific and Technical Information of China (English)

    LIU Feng; LEI Zhen-ming

    2009-01-01

    To improve user experience of composite Web services, a user-aware quality of service (QoS) based Web services composition model is proposed. Under such model, a Web services selection method based on quantum genetic algorithm is proposed. This algorithm uses quantum bit encoding, dynamic step-length quantum gate angle adjustment, neighborhood service search and dynamic punishment strategy to expand search scope and speed up convergence. Simulation experiment shows that this algorithm is more efficient than other existing algorithms in Web services selection.

  1. Electronic personal maternity records: Both web and smartphone services.

    Science.gov (United States)

    Chang, Chung-Wei; Ma, Tien-Yan; Choi, Mei-San; Hsu, Yu-Yun; Tsai, Yi-Jing; Hou, Ting-Wei

    2015-08-01

    This study develops an antenatal care information system to assist women during pregnancy. We designed and implemented the system as both a web-based service and a multi-platform application for smartphones and tablets. The proposed system has three novel features: (1) web-based maternity records, which contains concise explanations of various antenatal screening and diagnostic tests; (2) self-care journals, which allow pregnant women to keep track of their gestational weight gains, blood pressure, fetal movements, and contractions; and (3) health education, which automatically presents detailed information on antenatal care and other pregnancy-related knowledge according to the women's gestational age. A survey was conducted among pregnant women to evaluate the usability and acceptance of the proposed system. In order to prove that the antenatal care was effective, clinical outcomes should be provided and the results are focused on a usability evaluation.

  2. Comparison of the Rest Architectural Style with Soap in Implementation of Modern Web Services

    Directory of Open Access Journals (Sweden)

    Kęstutis Stankevičius

    2013-05-01

    Full Text Available One of the most relevant steps in the development of an information system during implementation of web services is moving the existing program functionality onto the web. Although web services have been advancing together with software, implementation requires special attention. Accessible options allow organisations to search for alternatives that would suit their needs, i.e. would be cheaper and more effective as well as possibly easier and faster to implement. The paper aims to compare a standard method for creation of web services with another architectural style for implementation of web services, which is getting more widely used.Article in Lithuanian

  3. Design and Implementation of Web Services Security Based on Message Layer

    Institute of Scientific and Technical Information of China (English)

    WANG Cui-ru; XU Zheng-wei; YUAN He-jin; MA Hui-min

    2004-01-01

    Along with the development of Internet, Web Services technology is a new branch of Web application program, and it has become a hotspot in computer science.However, it has not made great progress in research on Web Services security.Traditional security solutions cannot satisfy the Web Services security require of selective protection, end-to-end security and application layer security.Web Services technology needs a solution integrated in Web Services framework to realize end-to-end security.Based on cryptography and Web Services technology and according to W3C, XML encryption specification, XML digital Signature specification and WS-Security, which proposed by IBM and Microsoft, a new Web services security model based on message layer is put forward in this paper.The message layer is composed of message handlers.It is inserted into the message processing sequence and provides transparent security services for Web Services.To verify the model, a Web Services security system is realized on .net platform.The implementation version of the model can provide various security services, and has advantages such as security, scalability, security controllability and end-to-end security in message level.

  4. Expedition Memory: Towards Agent-based Web Services for Creating and Using Mars Exploration Data.

    Science.gov (United States)

    Clancey, William J.; Sierhuis, Maarten; Briggs, Geoff; Sims, Mike

    2005-01-01

    Explorers ranging over kilometers of rugged, sometimes "feature-less" terrain for over a year could be overwhelmed by tracking and sharing what they have done and learned. An automated system based on the existing Mobile Agents design [ I ] and Mars Exploration Rover experience [2], could serve as an "expedition memory" that would be indexed by voice as wel1 as a web interface, linking people, places, activities, records (voice notes, photographs, samples). and a descriptive scientific ontology. This database would be accessible during EVAs by astronauts, annotated by the remote science team, linked to EVA plans, and allow cross indexing between sites and expeditions. We consider the basic problem, our philosophical approach, technical methods, and uses of the expedition memory for facilitating long-term collaboration between Mars crews and Earth support teams. We emphasize that a "memory" does not mean a database per se, but an interactive service that combines different resources, and ultimately could be like a helpful librarian.

  5. 服务管理综述%Review of Web Service Management

    Institute of Scientific and Technical Information of China (English)

    窦郁宏; 陈松乔

    2003-01-01

    With the evolution of network and communication technology,Web service management has been a hot topic for the last couple of years. Firstly this paper introduces the background and development of two concepts: Webservice and Web service management. Based on the overview of service management,such as architectures,frames,models,functions ,etc ,we integrate the universal architecture of web service management. In addition,this paper introduces the corresponding protocol or standard on its every layer.

  6. Implementation of E-Service Intelligence in the Field of Web Mining

    Directory of Open Access Journals (Sweden)

    PROF. MS. S. P. SHINDE,

    2011-05-01

    Full Text Available The World Wide Web is a popular and interactive medium to disseminate information today .The web is huge, diverse, dynamic, widely distributed global information service centre. We are familiar with the terms like e-commerce, e-governance, e-market, e-finance, e-learning, e-banking etc. These terms come under online services called e-service applications. E-services involve various types of delivery systems, advanced information technologies, methodologies and applications of online services. The keyword intelligence will be the next paradigm shift in the e-services, thanks to internet technological advances. Intelligence is closely related with Artificial Intelligence. Web Mining is the technique used to crawlthrough various web resources to collect required information, which enables an individual to promote business, understanding marketing dynamics, and new promotions floating on the Internet etc. Thetaxonomy of web mining can be broadly divided into three distinct categories; according to the kinds of data to be mined they are Web Content Mining, Web Structure Mining and Web Usage Mining. Thereare a lot of techniques of web mining however, artificial intelligence techniques and algorithms are being used by almost all web mining tasks for their efficiency. This paper discusses the two main AI techniques; the Multi-Agent Systems and Swarm Intelligence, with some of their applications in web mining. Web Mining Intelligent techniques can be combined with traditional web mining approaches to improve the quality of mining.

  7. Diy Geospatial Web Service Chains: Geochaining Make it Easy

    Science.gov (United States)

    Wu, H.; You, L.; Gui, Z.

    2011-08-01

    It is a great challenge for beginners to create, deploy and utilize a Geospatial Web Service Chain (GWSC). People in Computer Science are usually not familiar with geospatial domain knowledge. Geospatial practitioners may lack the knowledge about web services and service chains. The end users may lack both. However, integrated visual editing interfaces, validation tools, and oneclick deployment wizards may help to lower the learning curve and improve modelling skills so beginners will have a better experience. GeoChaining is a GWSC modelling tool designed and developed based on these ideas. GeoChaining integrates visual editing, validation, deployment, execution etc. into a unified platform. By employing a Virtual Globe, users can intuitively visualize raw data and results produced by GeoChaining. All of these features allow users to easily start using GWSC, regardless of their professional background and computer skills. Further, GeoChaining supports GWSC model reuse, meaning that an entire GWSC model created or even a specific part can be directly reused in a new model. This greatly improves the efficiency of creating a new GWSC, and also contributes to the sharing and interoperability of GWSC.

  8. Communicating Thematic Data Quality with Web Map Services

    Directory of Open Access Journals (Sweden)

    Jon D. Blower

    2015-10-01

    Full Text Available Geospatial information of many kinds, from topographic maps to scientific data, is increasingly being made available through web mapping services. These allow georeferenced map images to be served from data stores and displayed in websites and geographic information systems, where they can be integrated with other geographic information. The Open Geospatial Consortium’s Web Map Service (WMS standard has been widely adopted in diverse communities for sharing data in this way. However, current services typically provide little or no information about the quality or accuracy of the data they serve. In this paper we will describe the design and implementation of a new “quality-enabled” profile of WMS, which we call “WMS-Q”. This describes how information about data quality can be transmitted to the user through WMS. Such information can exist at many levels, from entire datasets to individual measurements, and includes the many different ways in which data uncertainty can be expressed. We also describe proposed extensions to the Symbology Encoding specification, which include provision for visualizing uncertainty in raster data in a number of different ways, including contours, shading and bivariate colour maps. We shall also describe new open-source implementations of the new specifications, which include both clients and servers.

  9. Optimizing medical data quality based on multiagent web service framework.

    Science.gov (United States)

    Wu, Ching-Seh; Khoury, Ibrahim; Shah, Hemant

    2012-07-01

    One of the most important issues in e-healthcare information systems is to optimize the medical data quality extracted from distributed and heterogeneous environments, which can extremely improve diagnostic and treatment decision making. This paper proposes a multiagent web service framework based on service-oriented architecture for the optimization of medical data quality in the e-healthcare information system. Based on the design of the multiagent web service framework, an evolutionary algorithm (EA) for the dynamic optimization of the medical data quality is proposed. The framework consists of two main components; first, an EA will be used to dynamically optimize the composition of medical processes into optimal task sequence according to specific quality attributes. Second, a multiagent framework will be proposed to discover, monitor, and report any inconstancy between the optimized task sequence and the actual medical records. To demonstrate the proposed framework, experimental results for a breast cancer case study are provided. Furthermore, to show the unique performance of our algorithm, a comparison with other works in the literature review will be presented.

  10. The Ideal Web IR Service Frame%理想的Web IR服务模式的研究

    Institute of Scientific and Technical Information of China (English)

    刘悦; 冯国臻; 程学旗; 薄立彦

    2003-01-01

    Web IR presents a new challenge due to the heterogeneity,the dynamic characteristic and the size of theWeb. A practical IR system that can satisfy the users' demand is very important ,in this paper we research the charac-teristics of Web IR in detail and give out the ideal Web IR service model:it should include search engine spectrum,search engine hierarchy,search engine cooperative network. We also analyze the key technique of this model,propose asimple way for the Web IR service to deal with the huge-scale of Web resources easily,and test part of the ideas in ourprototype system SAInSE.

  11. On the Use of Social Networks in Web Services: Application to the Discovery Stage

    Science.gov (United States)

    Maamar, Zakaria; Wives, Leandro Krug; Boukadi, Khouloud

    This chapter discusses the use of social networks in Web services with focus on the discovery stage that characterizes the life cycle of these Web services. Other stages in this life cycle include description, publication, invocation, and composition. Web services are software applications that end users or other peers can invoke and compose to satisfy different needs such as hotel booking and car rental. Discovering the relevant Web services is, and continues to be, a major challenge due to the dynamic nature of these Web services. Indeed, Web services appear/disappear or suspend/resume operations without prior notice. Traditional discovery techniques are based on registries such as Universal Description, Discovery and Integration (UDDI) and Electronic Business using eXtensible Markup Language (ebXML). Unfortunately, despite the different improvements that these techniques have been subject to, they still suffer from various limitations that could slow down the acceptance trend of Web services by the IT community. Social networks seem to offer solutions to some of these limitations but raise, at the same time, some issues that are discussed in this chapter. The contributions of this chapter are three: social network definition in the particular context of Web services; mechanisms that support Web services build, use, and maintain their respective social networks; and social networks adoption to discover Web services.

  12. Reliable execution based on CPN and skyline optimization for Web service composition.

    Science.gov (United States)

    Chen, Liping; Ha, Weitao; Zhang, Guojun

    2013-01-01

    With development of SOA, the complex problem can be solved by combining available individual services and ordering them to best suit user's requirements. Web services composition is widely used in business environment. With the features of inherent autonomy and heterogeneity for component web services, it is difficult to predict the behavior of the overall composite service. Therefore, transactional properties and nonfunctional quality of service (QoS) properties are crucial for selecting the web services to take part in the composition. Transactional properties ensure reliability of composite Web service, and QoS properties can identify the best candidate web services from a set of functionally equivalent services. In this paper we define a Colored Petri Net (CPN) model which involves transactional properties of web services in the composition process. To ensure reliable and correct execution, unfolding processes of the CPN are followed. The execution of transactional composition Web service (TCWS) is formalized by CPN properties. To identify the best services of QoS properties from candidate service sets formed in the TCSW-CPN, we use skyline computation to retrieve dominant Web service. It can overcome that the reduction of individual scores to an overall similarity leads to significant information loss. We evaluate our approach experimentally using both real and synthetically generated datasets.

  13. Reliable Execution Based on CPN and Skyline Optimization for Web Service Composition

    Directory of Open Access Journals (Sweden)

    Liping Chen

    2013-01-01

    Full Text Available With development of SOA, the complex problem can be solved by combining available individual services and ordering them to best suit user’s requirements. Web services composition is widely used in business environment. With the features of inherent autonomy and heterogeneity for component web services, it is difficult to predict the behavior of the overall composite service. Therefore, transactional properties and nonfunctional quality of service (QoS properties are crucial for selecting the web services to take part in the composition. Transactional properties ensure reliability of composite Web service, and QoS properties can identify the best candidate web services from a set of functionally equivalent services. In this paper we define a Colored Petri Net (CPN model which involves transactional properties of web services in the composition process. To ensure reliable and correct execution, unfolding processes of the CPN are followed. The execution of transactional composition Web service (TCWS is formalized by CPN properties. To identify the best services of QoS properties from candidate service sets formed in the TCSW-CPN, we use skyline computation to retrieve dominant Web service. It can overcome that the reduction of individual scores to an overall similarity leads to significant information loss. We evaluate our approach experimentally using both real and synthetically generated datasets.

  14. A Novel Web Service Based Home Energy Management System

    DEFF Research Database (Denmark)

    Rossello Busquet, Ana; Soler, José

    2011-01-01

    In the last years energy consumption in the home environments has increased considerably. There is an interest to provide users with means to reduce their energy consumption. Introducing a Home Energy Management System (HEMS) into user residences might provide the necessary tools to reduce...... and optimize the energy consumption in home environments. The main element of HEMS is the home gateway. In this paper, a home gateway suitable for HEMS is presented. The home gateway proposed uses rules to implement the home energy management system. The rules can be downloaded though web services from a rule...

  15. Creating A Galactic Plane Atlas With Amazon Web Services

    CERN Document Server

    Berriman, G Bruce; Good, John; Juve, Gideon; Kinney, Jamie; Merrihew, Ann; Rynge, Mats

    2013-01-01

    This paper describes by example how astronomers can use cloud-computing resources offered by Amazon Web Services (AWS) to create new datasets at scale. We have created from existing surveys an atlas of the Galactic Plane at 16 wavelengths from 1 {\\mu}m to 24 {\\mu}m with pixels co-registered at spatial sampling of 1 arcsec. We explain how open source tools support management and operation of a virtual cluster on AWS platforms to process data at scale, and describe the technical issues that users will need to consider, such as optimization of resources, resource costs, and management of virtual machine instances.

  16. Distributed collaborative CAD system based on Web Service

    Institute of Scientific and Technical Information of China (English)

    欧阳应秀; 唐敏; 林军呈; 董金祥

    2004-01-01

    This paper presents a novel Web Service based distributed collaborative CAD system employing feature as its collaborative design element and uses XML to define feature operations and communication protocol between the server and the client. To reduce network load and increase response ability of the system, the feature information is updated incrementally on the client. The system supports collaborative designing on heterogeneous platforms. Its framework and communication protocols are analyzed in detail. The experimental results from the developed prototype system showed that it can effectively support collaborative design under the distributed environment.

  17. Web Services interface of SSRF archive data analysis system

    Institute of Scientific and Technical Information of China (English)

    LI Lin; SHEN Liren; ZHU Qing; WAN Tianmin

    2007-01-01

    Accelerator database stores various static parameters and real-time data of accelerator. SSRF (Shanghai Synchrotron Radiation Facility) adopts relational database to save the data. We developed a data retrieval system based on XML Web Services for accessing the archive data. It includes a bottom layer interface and an interface applicable for accelerator physics. Client samples exemplifying how to consume the interface are given. The users can browse, retrieve and plot data by the client samples. Also, we give a method to test its stability. The test result and performance are described.

  18. Querying OCLC Web Services for Name, Subject, and ISBN

    Directory of Open Access Journals (Sweden)

    Ya’aqov Ziso

    2010-03-01

    Full Text Available Using Web services, search terms can be sent to WorldCat's centralized authority and identifier files to retrieve authorized terminology that helps users get a comprehensive set of relevant search results. This article presents methods for searching names, subjects or ISBNs in various WorldCat databases and displaying the results to users. Exploiting WorldCat's databases in this way opens up future possibilities for more seamless integration of authority-controlled vocabulary lists into new discovery interfaces and a reduction in libraries’ dependence on local name and subject authority files.

  19. Product line based ontology development for semantic web service

    DEFF Research Database (Denmark)

    Zhang, Weishan; Kunz, Thomas

    2006-01-01

    and evolution. In this paper, we present a product line based reuseoriented ontology development methodology which integrates ontology development with design by reuse and design for reuse. The basic building block in our approach is the meta-ontology. In the first stage, reengineering of existing ontologies...... will lead to the initial implementation of the meta-onotologies using design by reuse and with the objective of design for reuse. After that step new ontologies could be generated by reusing these meta-ontologies. We demonstrate our approach with a Semantic Web Service application to show how to build...

  20. 基于Web Services的系统架构分析%Analysis on System Architecture Based on Web Services

    Institute of Scientific and Technical Information of China (English)

    梁娜

    2005-01-01

    Web Services为运行在不同平台、不同系统中的各种软件应用提供了一个互操作的标准方式,构成了各种不同平台上服务应用间实施彼此连接和集成的基础.从Web Services Architecture的四个子框架出发描述了Web Services体系架构思想,从方法的角度分析了服务框架、资源框架和政策框架实践应用的实现模式,探讨了支持多类型Web Services沟通、多种Web Services设备接入、多种Web Services政策管理的开放Web Services框架.

  1. Web服务和下一代劳动力%Web Services and Next Generation Workforce

    Institute of Scientific and Technical Information of China (English)

    GLEESON Michael; REYNOLDS Gordon; DUGGAN Bryan

    2007-01-01

    Over the course of the past 15 years there has been an increasing trend towards the provision of service based functionality by Information Systems (IS). This has been due to a number of driving forces, however the main impetus of this tendency has been the development and implementation of Web Services technology. Web Services offer a solution to deliver a dynamic, task-driven computing environment and shared business processes, while also reducing costs. Web Services have overturned many traditional assumptions about Information Systems. They have enabled innovation and afforded a degree of flexibility not available previously from an Information System. This paper will give a brief overview of Web Services and corresponding technologies. It will then examine the required skills of graduates and identify the roles where these proficiencies will be required. Finally, it will propose that the flexibility afforded by the use of Web Services must be emulated in the teaching of Web Services.

  2. Using Frames and JavaScript To Automate Teacher-Side Web Page Navigation for Classroom Presentations.

    Science.gov (United States)

    Snyder, Robin M.

    HTML provides a platform-independent way of creating and making multimedia presentations for classroom instruction and making that content available on the Internet. However, time in class is very valuable, so that any way to automate or otherwise assist the presenter in Web page navigation during class can save valuable seconds. This paper…

  3. Architecting end-to-end convergence of Web and Telco services

    OpenAIRE

    Nicolas, Gérard; Sbata, Karim; Najm, Elie

    2011-01-01

    International audience; Over the last few years, significant evolutions such as the mobile phones' enhanced Web-browsing capabilities and the technical incursion of Web major players into the Telco world (e.g. Google, Facebook) have reduced the gap between Telecom and Web worlds. In this context, converging IMS or Internet Protocol Multimedia Subsystem and Web service platforms has become a key challenge that needs to be addressed by both Web and telecom players. Several interesting solutions...

  4. Websocket Enabler: achieving IMS and Web services end-to-end convergence

    OpenAIRE

    Nicolas, Gérard; Sbata, Karim; Najm, Elie

    2011-01-01

    International audience; Over the last few years, significant evolutions such as the mobile phones' enhanced web-browsing capabilities and the technical incursion of Web major players into the Telco world (e.g. Google, Facebook) have reduced the gap between Telecom and Web worlds. In this context, converging IMS and Web service platforms has become a key challenge that needs to be addressed by both Web and Telecom players. Several interesting solutions, illustrating different convergence appro...

  5. Methodology for Web Services Adoption Based on Technology Adoption Theory and Business Process Analyses

    Institute of Scientific and Technical Information of China (English)

    AN Liping; YAN Jianyuan; TONG Lingyun

    2008-01-01

    Web services use an emerging service-oriented architecture for distributed computing. Many organizations are either in the process of adopting web services technology or evaluating this option for incorporation into their enterprise information architectures. Implementation of this new technology requires careful assessment of the needs and capabilities of an organization to formulate adoption strategies. This paper presents a methodology for web services adoption based on technology adoption theory and business process analyses. The methodology suggests that strategies, business areas, and functions within an organization should be considered based on the existing organizational information technology status during the process of adopting web services to support the business needs and requirements.

  6. A PORTAL SYSTEM AND ITS APPLICATION BASED ON DACS WEB SERVICE

    Directory of Open Access Journals (Sweden)

    Kazuya Odagiri

    2010-01-01

    Full Text Available DACS (Destination Addressing Control System Scheme is developed as a new network managementscheme. DACS Scheme performs the network management and services efficiently by communicationcontrol of client computers. Through the communication control, a whole network is managed. In thenetwork with DACS Scheme, new network services and information systems are realized. As examples ofthose, we have developed a new portal system and DACS Web Service. DACS Web Service is a networkservice for realizing a portal system where each user can create the customized Web page as PersonalPortal freely and easily. We show the proposed portal system and its application based on DACS WebService.

  7. Automation Security

    OpenAIRE

    Mirzoev, Dr. Timur

    2014-01-01

    Web-based Automated Process Control systems are a new type of applications that use the Internet to control industrial processes with the access to the real-time data. Supervisory control and data acquisition (SCADA) networks contain computers and applications that perform key functions in providing essential services and commodities (e.g., electricity, natural gas, gasoline, water, waste treatment, transportation) to all Americans. As such, they are part of the nation s critical infrastructu...

  8. A Different Web-Based Geocoding Service Using Fuzzy Techniques

    Science.gov (United States)

    Pahlavani, P.; Abbaspour, R. A.; Zare Zadiny, A.

    2015-12-01

    Geocoding - the process of finding position based on descriptive data such as address or postal code - is considered as one of the most commonly used spatial analyses. Many online map providers such as Google Maps, Bing Maps and Yahoo Maps present geocoding as one of their basic capabilities. Despite the diversity of geocoding services, users usually face some limitations when they use available online geocoding services. In existing geocoding services, proximity and nearness concept is not modelled appropriately as well as these services search address only by address matching based on descriptive data. In addition there are also some limitations in display searching results. Resolving these limitations can enhance efficiency of the existing geocoding services. This paper proposes the idea of integrating fuzzy technique with geocoding process to resolve these limitations. In order to implement the proposed method, a web-based system is designed. In proposed method, nearness to places is defined by fuzzy membership functions and multiple fuzzy distance maps are created. Then these fuzzy distance maps are integrated using fuzzy overlay technique for obtain the results. Proposed methods provides different capabilities for users such as ability to search multi-part addresses, searching places based on their location, non-point representation of results as well as displaying search results based on their priority.

  9. A DIFFERENT WEB-BASED GEOCODING SERVICE USING FUZZY TECHNIQUES

    Directory of Open Access Journals (Sweden)

    P. Pahlavani

    2015-12-01

    Full Text Available Geocoding – the process of finding position based on descriptive data such as address or postal code - is considered as one of the most commonly used spatial analyses. Many online map providers such as Google Maps, Bing Maps and Yahoo Maps present geocoding as one of their basic capabilities. Despite the diversity of geocoding services, users usually face some limitations when they use available online geocoding services. In existing geocoding services, proximity and nearness concept is not modelled appropriately as well as these services search address only by address matching based on descriptive data. In addition there are also some limitations in display searching results. Resolving these limitations can enhance efficiency of the existing geocoding services. This paper proposes the idea of integrating fuzzy technique with geocoding process to resolve these limitations. In order to implement the proposed method, a web-based system is designed. In proposed method, nearness to places is defined by fuzzy membership functions and multiple fuzzy distance maps are created. Then these fuzzy distance maps are integrated using fuzzy overlay technique for obtain the results. Proposed methods provides different capabilities for users such as ability to search multi-part addresses, searching places based on their location, non-point representation of results as well as displaying search results based on their priority.

  10. Hybrid QoS-aware semantic web service composition strategies

    Institute of Scientific and Technical Information of China (English)

    YANG FangChun; SU Sen; LI Zhen

    2008-01-01

    Hybrid QoS model which consists of certain and uncertain expressions has strong power of semantic QoS description. For solving the hybrid QoS-aware semantic web service composition problem, this paper presents an Uncertain Multi-attribute decision making based Composition algorithm (UMC). The UMC includes two parts. First, UMC-Core can be used to synthetically evaluate the hybrid service quality information. Second, UMC-DH (Distributed and Heuristic framework for UMC) aims at enhancing the run-time performance of UMC when the problem space increases. The simulation results show that the UMC has lower execution cost, higher ap proximation ratio and success ratio than other similar approaches.

  11. The taxonomic name resolution service: an online tool for automated standardization of plant names

    Directory of Open Access Journals (Sweden)

    Boyle Brad

    2013-01-01

    Full Text Available Abstract Background The digitization of biodiversity data is leading to the widespread application of taxon names that are superfluous, ambiguous or incorrect, resulting in mismatched records and inflated species numbers. The ultimate consequences of misspelled names and bad taxonomy are erroneous scientific conclusions and faulty policy decisions. The lack of tools for correcting this ‘names problem’ has become a fundamental obstacle to integrating disparate data sources and advancing the progress of biodiversity science. Results The TNRS, or Taxonomic Name Resolution Service, is an online application for automated and user-supervised standardization of plant scientific names. The TNRS builds upon and extends existing open-source applications for name parsing and fuzzy matching. Names are standardized against multiple reference taxonomies, including the Missouri Botanical Garden's Tropicos database. Capable of processing thousands of names in a single operation, the TNRS parses and corrects misspelled names and authorities, standardizes variant spellings, and converts nomenclatural synonyms to accepted names. Family names can be included to increase match accuracy and resolve many types of homonyms. Partial matching of higher taxa combined with extraction of annotations, accession numbers and morphospecies allows the TNRS to standardize taxonomy across a broad range of active and legacy datasets. Conclusions We show how the TNRS can resolve many forms of taxonomic semantic heterogeneity, correct spelling errors and eliminate spurious names. As a result, the TNRS can aid the integration of disparate biological datasets. Although the TNRS was developed to aid in standardizing plant names, its underlying algorithms and design can be extended to all organisms and nomenclatural codes. The TNRS is accessible via a web interface at http://tnrs.iplantcollaborative.org/ and as a RESTful web service and application programming interface. Source code

  12. The NIF DISCO Framework: facilitating automated integration of neuroscience content on the web.

    Science.gov (United States)

    Marenco, Luis; Wang, Rixin; Shepherd, Gordon M; Miller, Perry L

    2010-06-01

    This paper describes the capabilities of DISCO, an extensible approach that supports integrative Web-based information dissemination. DISCO is a component of the Neuroscience Information Framework (NIF), an NIH Neuroscience Blueprint initiative that facilitates integrated access to diverse neuroscience resources via the Internet. DISCO facilitates the automated maintenance of several distinct capabilities using a collection of files 1) that are maintained locally by the developers of participating neuroscience resources and 2) that are "harvested" on a regular basis by a central DISCO server. This approach allows central NIF capabilities to be updated as each resource's content changes over time. DISCO currently supports the following capabilities: 1) resource descriptions, 2) "LinkOut" to a resource's data items from NCBI Entrez resources such as PubMed, 3) Web-based interoperation with a resource, 4) sharing a resource's lexicon and ontology, 5) sharing a resource's database schema, and 6) participation by the resource in neuroscience-related RSS news dissemination. The developers of a resource are free to choose which DISCO capabilities their resource will participate in. Although DISCO is used by NIF to facilitate neuroscience data integration, its capabilities have general applicability to other areas of research.

  13. WBSA: Web Service for Bisulfite Sequencing Data Analysis

    Science.gov (United States)

    Wang, Yanqing; Wang, Jianfeng; Yu, Caixia; Chen, Xu; Zhu, Junwei; Yan, Jiangwei; Zhao, Wenming; Li, Rujiao

    2014-01-01

    Whole-Genome Bisulfite Sequencing (WGBS) and genome-wide Reduced Representation Bisulfite Sequencing (RRBS) are widely used to study DNA methylation. However, data analysis is complicated, lengthy, and hampered by a lack of seamless analytical pipelines. To address these issues, we developed a convenient, stable, and efficient web service called Web Service for Bisulfite Sequencing Data Analysis (WBSA) to analyze bisulfate sequencing data. WBSA focuses on not only CpG methylation, which is the most common biochemical modification in eukaryotic DNA, but also non-CG methylation, which have been observed in plants, iPS cells, oocytes, neurons and stem cells of human. WBSA comprises three main modules as follows: WGBS data analysis, RRBS data analysis, and differentially methylated region (DMR) identification. The WGBS and RRBS modules execute read mapping, methylation site identification, annotation, and advanced analysis, whereas the DMR module identifies actual DMRs and annotates their correlations to genes. WBSA can be accessed and used without charge either online or local version. WBSA also includes the executables of the Portable Batch System (PBS) and standalone versions that can be downloaded from the website together with the installation instructions. WBSA is available at no charge for academic users at http://wbsa.big.ac.cn. PMID:24497972

  14. FORMATIVE ADAPTIVE TESTING SERVICE WEB TO INDIVIDUALIZE ELEARNING PROCESS

    Directory of Open Access Journals (Sweden)

    NOUR-EDDINE El FADDOULI

    2011-06-01

    Full Text Available In most of the existing E-learning systems, the content and the order of activities are presented in a static manner without taking into consideration the learner’s characteristics. Therefore, customizing and adapting the environment to the learner’s profile has shown important improvement in education quality. There are several adaptation approaches of E-learning environments, such as, adaptive hypermedia system, semantic web, etc. In our proposed system (RIMEV, we adopted a Competency Based Approach (CBA, and we found that a welladapted system depends mainly on the adequacy of the information collected through a personal diagnostic. This diagnostic takes place via an adaptive test using the Item Response Theory (IRT in a formative approach. This Intelligent test administers optimal items in an appropriate order in a short time and produces a goodassessment of the learner’s skills with accurate results. Thus the e-learning systems can lead the learner to gradually acquire a skill by taking into account his/her characteristics and predispositions.Concerning the technological aspect, the system is implemented as a composed web service, which calls several basic services that coordinate according to an orchestration plan. This allows interoperability with heterogeneous learning systems.

  15. WS/PIDS: standard interoperable PIDS in web services environments.

    Science.gov (United States)

    Vasilescu, E; Dorobanţu, M; Govoni, S; Padh, S; Mun, S K

    2008-01-01

    An electronic health record depends on the consistent handling of people's identities within and outside healthcare organizations. Currently, the Person Identification Service (PIDS), a CORBA specification, is the only well-researched standard that meets these needs. In this paper, we introduce WS/PIDS, a PIDS specification for Web Services (WS) that closely matches the original PIDS and improves on it by providing explicit support for medical multimedia attributes. WS/PIDS is currently supported by a test implementation, layered on top of a PIDS back-end, with Java- and NET-based, and Web clients. WS/PIDS is interoperable among platforms; it preserves PIDS semantics to a large extent, and it is intended to be fully compliant with established and emerging WS standards. The specification is open source and immediately usable in dynamic clinical systems participating in grid environments. WS/PIDS has been tested successfully with a comprehensive set of use cases, and it is being used in a clinical research setting.

  16. WBSA: web service for bisulfite sequencing data analysis.

    Science.gov (United States)

    Liang, Fang; Tang, Bixia; Wang, Yanqing; Wang, Jianfeng; Yu, Caixia; Chen, Xu; Zhu, Junwei; Yan, Jiangwei; Zhao, Wenming; Li, Rujiao

    2014-01-01

    Whole-Genome Bisulfite Sequencing (WGBS) and genome-wide Reduced Representation Bisulfite Sequencing (RRBS) are widely used to study DNA methylation. However, data analysis is complicated, lengthy, and hampered by a lack of seamless analytical pipelines. To address these issues, we developed a convenient, stable, and efficient web service called Web Service for Bisulfite Sequencing Data Analysis (WBSA) to analyze bisulfate sequencing data. WBSA focuses on not only CpG methylation, which is the most common biochemical modification in eukaryotic DNA, but also non-CG methylation, which have been observed in plants, iPS cells, oocytes, neurons and stem cells of human. WBSA comprises three main modules as follows: WGBS data analysis, RRBS data analysis, and differentially methylated region (DMR) identification. The WGBS and RRBS modules execute read mapping, methylation site identification, annotation, and advanced analysis, whereas the DMR module identifies actual DMRs and annotates their correlations to genes. WBSA can be accessed and used without charge either online or local version. WBSA also includes the executables of the Portable Batch System (PBS) and standalone versions that can be downloaded from the website together with the installation instructions. WBSA is available at no charge for academic users at http://wbsa.big.ac.cn.

  17. Concept Mapping for Faster QoS-AwareWeb Service Composition

    NARCIS (Netherlands)

    Degeler, Viktoriya; Georgievski, Ilče; Lazovik, Alexander; Aiello, Marco

    2010-01-01

    The availability of Web services with similar functionality but different QoS values creates new challenges for Web services composition: not only functional properties of the composed service must be satisfied, but also non-functional properties such as response time and throughput must be optimal.

  18. The EEE-05 Challenge: A New Web Service Discovery and Composition Competition

    NARCIS (Netherlands)

    Blake, M. Brian; Tsui, Kwok Ching; Wombacher, Andreas

    2005-01-01

    With growing acceptance of service-oriented computing, an emerging area of research is the investigation of technologies that will enable the discovery and composition of web services. Using the same approach as the popular Trading Agent Competitions (TAC), the EEE-05 Web Services Challenge is the f

  19. 76 FR 14034 - Proposed Collection; Comment Request; NCI Cancer Genetics Services Directory Web-Based...

    Science.gov (United States)

    2011-03-15

    ... HUMAN SERVICES National Institutes of Health Proposed Collection; Comment Request; NCI Cancer Genetics Services Directory Web-Based Application Form and Update Mailer Summary: In compliance with the requirement... included in the NCI Cancer Genetics Services Directory on NCI's Cancer.gov Web site. The...

  20. Maintenance and Exchange of Learning Objects in a Web Services Based e-Learning System

    Science.gov (United States)

    Vossen, Gottfried; Westerkamp, Peter

    2004-01-01

    "Web services" enable partners to exploit applications via the Internet. Individual services can be composed to build new and more complex ones with additional and more comprehensive functionality. In this paper, we apply the Web service paradigm to electronic learning, and show how to exchange and maintain learning objects is a…

  1. Job submission and management through web services the experience with the CREAM service

    CERN Document Server

    Aiftimiei, C; Bertocco, S; Fina, S D; Ronco, S D; Dorigo, A; Gianelle, A; Marzolla, M; Mazzucato, M; Sgaravatto, M; Verlato, M; Zangrando, L; Corvo, M; Miccio, V; Sciabà, A; Cesini, D; Dongiovanni, D; Grandi, C

    2008-01-01

    Modern Grid middleware is built around components providing basic functionality, such as data storage, authentication, security, job management, resource monitoring and reservation. In this paper we describe the Computing Resource Execution and Management (CREAM) service. CREAM provides a Web service-based job execution and management capability for Grid systems; in particular, it is being used within the gLite middleware. CREAM exposes a Web service interface allowing conforming clients to submit and manage computational jobs to a Local Resource Management System. We developed a special component, called ICE (Interface to CREAM Environment) to integrate CREAM in gLite. ICE transfers job submissions and cancellations from the Workload Management System, allowing users to manage CREAM jobs from the gLite User Interface. This paper describes some recent studies aimed at assessing the performance and reliability of CREAM and ICE; those tests have been performed as part of the acceptance tests for integration of ...

  2. EnviroAtlas - Ecosystem Services Market-Based Programs Web Service, U.S., 2016, Forest Trends' Ecosystem Marketplace

    Data.gov (United States)

    U.S. Environmental Protection Agency — This EnviroAtlas web service contains layers depicting market-based programs and projects addressing ecosystem services protection in the United States. Layers...

  3. Lexical Link Analysis (LLA) Application: Improving Web Service to Defense Acquisition Visibility Environment (DAVE)

    Science.gov (United States)

    2015-05-01

    1 LEXICAL LINK ANALYSIS (LLA) APPLICATION: IMPROVING WEB SERVICE TO DEFENSE ACQUISITION VISIBILITY ENVIRONMENT(DAVE) May 13-14, 2015 Dr. Ying...Improving Web Service to Defense Acquisition Visibility Environment (DAVE) 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR...to install the LLA/CLA/SSA system as a web service in the Defense Acquisition Visibility Environment (DAVE) test bed via the AT&L eBusiness Center

  4. Design and implementation of CUAHSI WaterML and WaterOneFlow Web Services

    Science.gov (United States)

    Valentine, D. W.; Zaslavsky, I.; Whitenack, T.; Maidment, D.

    2007-12-01

    WaterOneFlow is a term for a group of web services created by and for the Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI) community. CUAHSI web services facilitate the retrieval of hydrologic observations information from online data sources using the SOAP protocol. CUAHSI Water Markup Language (below referred to as WaterML) is an XML schema defining the format of messages returned by the WaterOneFlow web services. \

  5. A METHOD FOR SEMANTIC WEB SERVICE COMPOSITION BASED ON PATTERN MATCHING

    OpenAIRE

    Mogos, Andrei-Horia; Adina Magda FLOREA

    2010-01-01

    The composition of semantic web services is a very important and actual problem in the semantic web services research area. There are several semi-automatic approaches for this problem, but most of the results are related to automatic approaches. In this paper we present an automatic approach for the composition of semantic web services based on pattern matching. We consider a special type of semantic description, represented as a list of semantic descriptions corresponding to several semanti...

  6. Sharing environmental models: An Approach using GitHub repositories and Web Processing Services

    Science.gov (United States)

    Stasch, Christoph; Nuest, Daniel; Pross, Benjamin

    2016-04-01

    The GLUES (Global Assessment of Land Use Dynamics, Greenhouse Gas Emissions and Ecosystem Services) project established a spatial data infrastructure for scientific geospatial data and metadata (http://geoportal-glues.ufz.de), where different regional collaborative projects researching the impacts of climate and socio-economic changes on sustainable land management can share their underlying base scenarios and datasets. One goal of the project is to ease the sharing of computational models between institutions and to make them easily executable in Web-based infrastructures. In this work, we present such an approach for sharing computational models relying on GitHub repositories (http://github.com) and Web Processing Services. At first, model providers upload their model implementations to GitHub repositories in order to share them with others. The GitHub platform allows users to submit changes to the model code. The changes can be discussed and reviewed before merging them. However, while GitHub allows sharing and collaborating of model source code, it does not actually allow running these models, which requires efforts to transfer the implementation to a model execution framework. We thus have extended an existing implementation of the OGC Web Processing Service standard (http://www.opengeospatial.org/standards/wps), the 52°North Web Processing Service (http://52north.org/wps) platform to retrieve all model implementations from a git (http://git-scm.com) repository and add them to the collection of published geoprocesses. The current implementation is restricted to models implemented as R scripts using WPS4R annotations (Hinz et al.) and to Java algorithms using the 52°North WPS Java API. The models hence become executable through a standardized Web API by multiple clients such as desktop or browser GIS and modelling frameworks. If the model code is changed on the GitHub platform, the changes are retrieved by the service and the processes will be updated

  7. Customer Decision Making in Web Services with an Integrated P6 Model

    Science.gov (United States)

    Sun, Zhaohao; Sun, Junqing; Meredith, Grant

    Customer decision making (CDM) is an indispensable factor for web services. This article examines CDM in web services with a novel P6 model, which consists of the 6 Ps: privacy, perception, propensity, preference, personalization and promised experience. This model integrates the existing 6 P elements of marketing mix as the system environment of CDM in web services. The new integrated P6 model deals with the inner world of the customer and incorporates what the customer think during the DM process. The proposed approach will facilitate the research and development of web services and decision support systems.

  8. Trust Degree of Web Services and Its Evaluation with Neural Network

    Institute of Scientific and Technical Information of China (English)

    HUANG Baohua; HU Heping; LU Zhengding; YAO Hanbing; LI Ruixuan

    2006-01-01

    The concept and definition of trust degree of Web service is given.Evaluating trust degree of Web services with the method of neural network from the aspect of trust history sequence is proposed.The principle of the method,applicable neural network structure, neural network constructing, input standardization, training sample constructing, and the procedure of evaluating trust degree of Web services with trained neural network are described.Experiments show that it is feasible and effective to evaluate trust degree of Web Service with neural network.

  9. Approximating Mathematical Semantic Web Services Using Approximation Formulas and Numerical Methods

    CERN Document Server

    Mogos, Andrei-Horia

    2009-01-01

    Mathematical semantic web services are very useful in practice, but only a small number of research results are reported in this area. In this paper we present a method of obtaining an approximation of a mathematical semantic web service, from its semantic description, using existing mathematical semantic web services, approximation formulas, and numerical methods techniques. We also give a method for automatic comparison of two complexity functions. In addition, we present a method for classifying the numerical methods mathematical semantic web services from a library.

  10. EnviroAtlas - Accessibility Characteristics in the Conterminous U.S. Web Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — This EnviroAtlas web service includes maps that illustrate factors affecting transit accessibility, and indicators of accessibility. Accessibility measures how...

  11. 一种基于图和本体的Web服务合成算法%A Composition Algorithm of Web Service Based on Graph and Ontology

    Institute of Scientific and Technical Information of China (English)

    王孝强

    2012-01-01

    To achieve the automation and efficiency of Web Service composition,the dissertation presents a new semantic-based Web Service composition algorithm,which makes full use of the graph theory knowledge and ontology reasoning function.Firstly,the set of services available is constructed using ontology reasoning function.Then,service composition graph Web Service Composition Graph(WSCG) is constructed by sub-step.Finally,the solution of Web Service composition is selected using graph searching algorithm.It′s proved that the method has a good success rate and efficiency.%为了实现Web服务合成的自动化、高效化,给出了一种支持语义的Web服务合成算法。该算法首先利用本体的推理功能实现可用服务集的构造,其次采用分步法进行服务合成图(Web ServiceComposition Graph,WSCG)的构造,最后通过图的搜索技术实现合成方案的选择,经实验测试表明该算法具有良好的合成效率和成功率。

  12. A Trusted Composition Evaluation Model to Support Web Services Coordination in Multi Domains

    Directory of Open Access Journals (Sweden)

    Li Qilong

    2012-03-01

    Full Text Available With the widespread development of web services application in multi-domains, more and more researchers have focused on the quality of web services composition. However, the research on the evaluation method for web services composition is still little nowadays. Therefore, a QoS-driven Trusted Composition Evaluation Model (TCEM is proposed in this study, it can judge the business stream effectively and comprehensively by choosing an appropriate and trusted evaluation method for the generated services composition chains. Furthermore, on the basis of Case-Based Reasoning (CBR and the retrieval mechanism oriented to web services coordination, the TCEM-based execution engine and algorithm is implemented to evaluate the quality of service composition. The proposed algorithm has the satisfied result compared with the traditional method, and it shows more efficient and trustworthy where web services composition is widely used in multi domains.

  13. Ontology Based Dynamic e-Learning Flow Composition of Learning Web Services

    Directory of Open Access Journals (Sweden)

    M. Farida Begam

    2014-06-01

    Full Text Available Web Services has instigated it’s transcend and now education has been made simple through Web Services. With the advent of Web Services, education has become far more personal, flexible and available across global borders. Workflow is a sequence of business tasks to be realized for the execution of user’ request. Identifying required e-learning web services and dynamic composition and realization of those services is a challenging process. In this study we have suggested e-learning services workflow composing architecture and relevant algorithms for matching and composing e-learning flow for the learners with different learning styles. We suggested non logic based hybrid matching and composing algorithms which uses OWL-S profile and process ontologies for dynamic workflow composition of e-learning web services.

  14. INCLUSive: A web portal and service registry for microarray and regulatory sequence analysis.

    Science.gov (United States)

    Coessens, Bert; Thijs, Gert; Aerts, Stein; Marchal, Kathleen; De Smet, Frank; Engelen, Kristof; Glenisson, Patrick; Moreau, Yves; Mathys, Janick; De Moor, Bart

    2003-07-01

    INCLUSive is a suite of algorithms and tools for the analysis of gene expression data and the discovery of cis-regulatory sequence elements. The tools allow normalization, filtering and clustering of microarray data, functional scoring of gene clusters, sequence retrieval, and detection of known and unknown regulatory elements using probabilistic sequence models and Gibbs sampling. All tools are available via different web pages and as web services. The web pages are connected and integrated to reflect a methodology and facilitate complex analysis using different tools. The web services can be invoked using standard SOAP messaging. Example clients are available for download to invoke the services from a remote computer or to be integrated with other applications. All services are catalogued and described in a web service registry. The INCLUSive web portal is available for academic purposes at http://www.esat.kuleuven.ac.be/inclusive.

  15. Automation of the Technical Services Department in the Community College Library.

    Science.gov (United States)

    Bial, Raymond; Strickler, Ken

    1987-01-01

    Describes Parkland College Library's efforts to review technical service activities and make recommendations concerning the automation of cataloging, acquisitions, and the public catalog. Traces the steps that have been taken in the development of a "paperless office." (DMM)

  16. Automated Event Service: Efficient and Flexible Searching for Earth Science Phenomena Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Develop an Automated Event Service system that: Methodically mines custom-defined events in the reanalysis data sets of global atmospheric models. Enables...

  17. SEMANTIC WEB-BASED SOFTWARE ENGINEERING BY AUTOMATED REQUIREMENTS ONTOLOGY GENERATION IN SOA

    Directory of Open Access Journals (Sweden)

    Vahid Rastgoo

    2014-04-01

    Full Text Available This paper presents an approach for automated generation of requirements ontology using UML diagrams in service-oriented architecture (SOA. The goal of this paper is to convenience progress of software engineering processes like software design, software reuse, service discovering and etc. The proposed method is based on a four conceptual layers. The first layer includes requirements achieved by stakeholders, the second one designs service-oriented diagrams from the data in first layer and extracts XMI codes of them. The third layer includes requirement ontology and protocol ontology to describe behavior of services and relationships between them semantically. Finally the forth layer makes standard the concepts exists in ontologies of previous layer. The generated ontology exceeds absolute domain ontology because it considers the behavior of services moreover the hierarchical relationship of them. Experimental results conducted on a set of UML4Soa diagrams in different scopes demonstrate the improvement of the proposed approach from different points of view such as: completeness of requirements ontology, automatic generation and considering SOA.

  18. Towards Semantic Web Services on Large, Multi-Dimensional Coverages

    Science.gov (United States)

    Baumann, P.

    2009-04-01

    Observed and simulated data in the Earth Sciences often come as coverages, the general term for space-time varying phenomena as set forth by standardization bodies like the Open GeoSpatial Consortium (OGC) and ISO. Among such data are 1-d time series, 2-D surface data, 3-D surface data time series as well as x/y/z geophysical and oceanographic data, and 4-D metocean simulation results. With increasing dimensionality the data sizes grow exponentially, up to Petabyte object sizes. Open standards for exploiting coverage archives over the Web are available to a varying extent. The OGC Web Coverage Service (WCS) standard defines basic extraction operations: spatio-temporal and band subsetting, scaling, reprojection, and data format encoding of the result - a simple interoperable interface for coverage access. More processing functionality is available with products like Matlab, Grid-type interfaces, and the OGC Web Processing Service (WPS). However, these often lack properties known as advantageous from databases: declarativeness (describe results rather than the algorithms), safe in evaluation (no request can keep a server busy infinitely), and optimizable (enable the server to rearrange the request so as to produce the same result faster). WPS defines a geo-enabled SOAP interface for remote procedure calls. This allows to webify any program, but does not allow for semantic interoperability: a function is identified only by its function name and parameters while the semantics is encoded in the (only human readable) title and abstract. Hence, another desirable property is missing, namely an explicit semantics which allows for machine-machine communication and reasoning a la Semantic Web. The OGC Web Coverage Processing Service (WCPS) language, which has been adopted as an international standard by OGC in December 2008, defines a flexible interface for the navigation, extraction, and ad-hoc analysis of large, multi-dimensional raster coverages. It is abstract in that it

  19. Design, Development and Testing of Web Services for Multi-Sensor Snow Cover Mapping

    Science.gov (United States)

    Kadlec, Jiri

    This dissertation presents the design, development and validation of new data integration methods for mapping the extent of snow cover based on open access ground station measurements, remote sensing images, volunteer observer snow reports, and cross country ski track recordings from location-enabled mobile devices. The first step of the data integration procedure includes data discovery, data retrieval, and data quality control of snow observations at ground stations. The WaterML R package developed in this work enables hydrologists to retrieve and analyze data from multiple organizations that are listed in the Consortium of Universities for the Advancement of Hydrologic Sciences Inc (CUAHSI) Water Data Center catalog directly within the R statistical software environment. Using the WaterML R package is demonstrated by running an energy balance snowpack model in R with data inputs from CUAHSI, and by automating uploads of real time sensor observations to CUAHSI HydroServer. The second step of the procedure requires efficient access to multi-temporal remote sensing snow images. The Snow Inspector web application developed in this research enables the users to retrieve a time series of fractional snow cover from the Moderate Resolution Imaging Spectroradiometer (MODIS) for any point on Earth. The time series retrieval method is based on automated data extraction from tile images provided by a Web Map Tile Service (WMTS). The average required time for retrieving 100 days of data using this technique is 5.4 seconds, which is significantly faster than other methods that require the download of large satellite image files. The presented data extraction technique and space-time visualization user interface can be used as a model for working with other multi-temporal hydrologic or climate data WMTS services. The third, final step of the data integration procedure is generating continuous daily snow cover maps. A custom inverse distance weighting method has been developed

  20. Recherche des services web à base de mesures de similarités.

    OpenAIRE

    MEZIANE, WISSAME SOULAF

    2015-01-01

    Les services web constituent une technologie primordial dans l'interopérabilité des applications sur le web , pour gérer leur cycle de vie (publication, recherche, sélection, composition) on se base sur les standards des web sémantique ( OWLS, WSDL,.....)