WorldWideScience

Sample records for web-engineering elektronische ressource

  1. Langfristig sichere elektronische Geldsysteme mit Observern

    OpenAIRE

    Schwarzpaul, Thomas

    2009-01-01

    In Anlehnung an herkömmliches Bargeld wurde 1988 von D. Chaum, A. Fiat und M. Naor ein erstes anonymes elektronisches Zahlungssystem, ein so genanntes elektronisches Geldsystem, entwickelt. Als digitales Äquivalent zu unserem gewöhnlichen Bargeld bietet elektronisches Geld Anonymität, Fälschungssicherheit und Verifizierbarkeit der Echtheit als wesentliche Sicherheitsmerkmale. Anonymität ist die auszeichnende Eigenschaft elektronischer Geldsysteme und ein Großteil der in der Literatur ...

  2. Elektronisch toezicht in een aantal landen

    NARCIS (Netherlands)

    Baas, N.J.

    1995-01-01

    In deze literatuurverkenning naar de ervaringen met elektronisch toezicht wordt vooral aandacht besteed aan de meest recente ontwikkelingen op dit terrein. Het experiment met elektronisch toezicht dat medio 1995 in Nederland van start zal gaan, vormt de directe aanleiding tot de

  3. Information system design for demand-driven supply networks

    OpenAIRE

    Selk, Bernhard

    2004-01-01

    Information system design for demand-driven supply networks : integrating CRM & SCM / B. Selk, K. Turowski, C. Winnewisser. - In: EIS : Fourth International ICSC Symposium on Engineering of Intelligent Systems, EIS 2004. [Elektronische Ressource]. - Millet, Alberta : ICSC Interdisciplinary Research Canada, 2004. - 8 S. auf CD-ROM

  4. Elektronische portier houdt hackers buiten de deur

    NARCIS (Netherlands)

    Luiijf, H.A.M.

    1999-01-01

    Veel bedrijven hebben hun fysieke beveiliging goed voor elkaar - met slagbomen, pasjessystemen en elektronische alarmering. Bedrijfsgeheimen verdwijnen echter op simpele wijze, namelijk via het netwerk. Kranten melden regelmatig dat hackers er weer eens in zijn geslaagd om wat dat betreft een

  5. Web Engineering

    Energy Technology Data Exchange (ETDEWEB)

    White, Bebo

    2003-06-23

    Web Engineering is the application of systematic, disciplined and quantifiable approaches to development, operation, and maintenance of Web-based applications. It is both a pro-active approach and a growing collection of theoretical and empirical research in Web application development. This paper gives an overview of Web Engineering by addressing the questions: (a) why is it needed? (b) what is its domain of operation? (c) how does it help and what should it do to improve Web application development? and (d) how should it be incorporated in education and training? The paper discusses the significant differences that exist between Web applications and conventional software, the taxonomy of Web applications, the progress made so far and the research issues and experience of creating a specialization at the master's level. The paper reaches a conclusion that Web Engineering at this stage is a moving target since Web technologies are constantly evolving, making new types of applications possible, which in turn may require innovations in how they are built, deployed and maintained.

  6. Engineering Web Applications

    DEFF Research Database (Denmark)

    Casteleyn, Sven; Daniel, Florian; Dolog, Peter

    Nowadays, Web applications are almost omnipresent. The Web has become a platform not only for information delivery, but also for eCommerce systems, social networks, mobile services, and distributed learning environments. Engineering Web applications involves many intrinsic challenges due...... to their distributed nature, content orientation, and the requirement to make them available to a wide spectrum of users who are unknown in advance. The authors discuss these challenges in the context of well-established engineering processes, covering the whole product lifecycle from requirements engineering through...... design and implementation to deployment and maintenance. They stress the importance of models in Web application development, and they compare well-known Web-specific development processes like WebML, WSDM and OOHDM to traditional software development approaches like the waterfall model and the spiral...

  7. Gestroomlijnd schrijven: het effect van een elektronische outline-tool op de schrijfvaardigheid

    OpenAIRE

    De Smet, Milou; Brand-Gruwel, Saskia; Broekkamp, Hein; Kirschner, Paul A.

    2011-01-01

    De Smet, M. J. R., Brand-Gruwel, S., Broekkamp, S., & Kirschner, P. A. (2011) Gestroomlijnd schrijven: Het effect van een elektronische outline-tool op de schrijfvaardigheid. Levende Talen Tijdschrift, 12(4), 14-25.

  8. Web Search Engines

    OpenAIRE

    Rajashekar, TB

    1998-01-01

    The World Wide Web is emerging as an all-in-one information source. Tools for searching Web-based information include search engines, subject directories and meta search tools. We take a look at key features of these tools and suggest practical hints for effective Web searching.

  9. Het effect van een elektronische outline-tool op het schrijfproduct en schrijfproces

    NARCIS (Netherlands)

    De Smet, Milou; Brand-Gruwel, Saskia; Leijten, Mariëlle; Kirschner, Paul A.

    2012-01-01

    De Smet, M. J. R., Brand-Gruwel, S., Leijten, M., & Kirschner, P. A. (2012, June). Het effect van een elektronische outline-tool op het schrijfproduct en schrijfproces [The effect of an electronic outline tool on the writing product and writing process]. In R. Brouwer (Chair), Omgaan met ICT:

  10. Havets ressourcer

    DEFF Research Database (Denmark)

    Carstensen, Jacob; Dahl, Karsten; Gislason, Henrik

    , øger skibstrafikken og lokker flere og flere turister til. Blandt meget andet. Mens vi gerne vil sikre gode udviklingsmuligheder for de maritime erhverv, skal vi tage hensyn til klima og miljø. Det blå hav er ikke en uudtømmelig ressource, og pladsen er trang i de danske farvande. Hvem, der fremover må...

  11. Gouvernance et gestion des ressources communes au Vietnam ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Gouvernance et gestion des ressources communes au Vietnam. La subvention permettra au Collège d'agriculture et de foresterie de l'Université de Huê de se pencher sur des questions reliées à la gestion des ressources communes et à la pauvreté dans ... New funding opportunity for gender equality and climate change.

  12. Web document engineering

    International Nuclear Information System (INIS)

    White, B.

    1996-05-01

    This tutorial provides an overview of several document engineering techniques which are applicable to the authoring of World Wide Web documents. It illustrates how pre-WWW hypertext research is applicable to the development of WWW information resources

  13. Competence Centered Specialization in Web Engineering Topics in a Software Engineering Masters Degree Programme

    DEFF Research Database (Denmark)

    Dolog, Peter; Thomsen, Lone Leth; Thomsen, Bent

    2010-01-01

    Web applications and Web-based systems are becoming increasingly complex as a result of either customer requests or technology evolution which has eased other aspects of software engineering. Therefore, there is an increasing demand for highly skilled software engineers able to build and also...... advance the systems on the one hand as well as professionals who are able to evaluate their eectiveness on the other hand. With this idea in mind, the computer science department at Aalborg University is continuously working on improvements in its specialization in web engineering topics as well...... as on general competence based web engineering proles oered also for those who specialize in other areas of software engineering. We describe the current state of the art and our experience with a web engineering curriculum within the software engineering masters degree programme. We also discuss an evolution...

  14. The Use of Web Search Engines in Information Science Research.

    Science.gov (United States)

    Bar-Ilan, Judit

    2004-01-01

    Reviews the literature on the use of Web search engines in information science research, including: ways users interact with Web search engines; social aspects of searching; structure and dynamic nature of the Web; link analysis; other bibliometric applications; characterizing information on the Web; search engine evaluation and improvement; and…

  15. Adding a visualization feature to web search engines: it's time.

    Science.gov (United States)

    Wong, Pak Chung

    2008-01-01

    It's widely recognized that all Web search engines today are almost identical in presentation layout and behavior. In fact, the same presentation approach has been applied to depicting search engine results pages (SERPs) since the first Web search engine launched in 1993. In this Visualization Viewpoints article, I propose to add a visualization feature to Web search engines and suggest that the new addition can improve search engines' performance and capabilities, which in turn lead to better Web search technology.

  16. Engineering Adaptive Web Applications

    DEFF Research Database (Denmark)

    Dolog, Peter

    2007-01-01

    suit the user profile the most. This paper summarizes the domain engineering framework for such adaptive web applications. The framework provides guidelines to develop adaptive web applications as members of a family. It suggests how to utilize the design artifacts as knowledge which can be used......Information and services on the web are accessible for everyone. Users of the web differ in their background, culture, political and social environment, interests and so on. Ambient intelligence was envisioned as a concept for systems which are able to adapt to user actions and needs....... With the growing amount of information and services, the web applications become natural candidates to adopt the concepts of ambient intelligence. Such applications can deal with divers user intentions and actions based on the user profile and can suggest the combination of information content and services which...

  17. A development process meta-model for Web based expert systems: The Web engineering point of view

    DEFF Research Database (Denmark)

    Dokas, I.M.; Alapetite, Alexandre

    2006-01-01

    raised their complexity. Unfortunately, there is so far no clear answer to the question: How may the methods and experience of Web engineering and expert systems be combined and applied in order todevelop effective and successful Web based expert systems? In an attempt to answer this question...... on Web based expert systems – will be presented. The idea behind the presentation of theaccessibility evaluation and its conclusions is to show to Web based expert system developers, who typically have little Web engineering background, that Web engineering issues must be considered when developing Web......Similar to many legacy computer systems, expert systems can be accessed via the Web, forming a set of Web applications known as Web based expert systems. The tough Web competition, the way people and organizations rely on Web applications and theincreasing user requirements for better services have...

  18. Security and computer forensics in web engineering education

    OpenAIRE

    Glisson, W.; Welland, R.; Glisson, L.M.

    2010-01-01

    The integration of security and forensics into Web Engineering curricula is imperative! Poor security in web-based applications is continuing to cost organizations millions and the losses are still increasing annually. Security is frequently taught as a stand-alone course, assuming that security can be 'bolted on' to a web application at some point. Security issues must be integrated into Web Engineering processes right from the beginning to create secure solutions and therefore security shou...

  19. Integrating ecosystem engineering and food webs

    NARCIS (Netherlands)

    Sanders, Dirk; Jones, Clive G.; Thebault, Elisa; Bouma, Tjeerd J.; van der Heide, Tjisse; van Belzen, Jim; Barot, Sebastien

    Ecosystem engineering, the physical modification of the environment by organisms, is a common and often influential process whose significance to food web structure and dynamics is largely unknown. In the light of recent calls to expand food web studies to include non-trophic interactions, we

  20. Integrating ecosystem engineering and food webs

    NARCIS (Netherlands)

    Sanders, D.; Jones, C.G.; Thébault, E.; Bouma, T.J.; van der Heide, T.; van Belzen, J.; Barot, S.

    2014-01-01

    Ecosystem engineering, the physical modification of the environment by organisms, is a common and often influential process whose significance to food web structure and dynamics is largely unknown. In the light of recent calls to expand food web studies to include non-trophic interactions, we

  1. The Little Engines That Could: Modeling the Performance of World Wide Web Search Engines

    OpenAIRE

    Eric T. Bradlow; David C. Schmittlein

    2000-01-01

    This research examines the ability of six popular Web search engines, individually and collectively, to locate Web pages containing common marketing/management phrases. We propose and validate a model for search engine performance that is able to represent key patterns of coverage and overlap among the engines. The model enables us to estimate the typical additional benefit of using multiple search engines, depending on the particular set of engines being considered. It also provides an estim...

  2. BPELPower—A BPEL execution engine for geospatial web services

    Science.gov (United States)

    Yu, Genong (Eugene); Zhao, Peisheng; Di, Liping; Chen, Aijun; Deng, Meixia; Bai, Yuqi

    2012-10-01

    The Business Process Execution Language (BPEL) has become a popular choice for orchestrating and executing workflows in the Web environment. As one special kind of scientific workflow, geospatial Web processing workflows are data-intensive, deal with complex structures in data and geographic features, and execute automatically with limited human intervention. To enable the proper execution and coordination of geospatial workflows, a specially enhanced BPEL execution engine is required. BPELPower was designed, developed, and implemented as a generic BPEL execution engine with enhancements for executing geospatial workflows. The enhancements are especially in its capabilities in handling Geography Markup Language (GML) and standard geospatial Web services, such as the Web Processing Service (WPS) and the Web Feature Service (WFS). BPELPower has been used in several demonstrations over the decade. Two scenarios were discussed in detail to demonstrate the capabilities of BPELPower. That study showed a standard-compliant, Web-based approach for properly supporting geospatial processing, with the only enhancement at the implementation level. Pattern-based evaluation and performance improvement of the engine are discussed: BPELPower directly supports 22 workflow control patterns and 17 workflow data patterns. In the future, the engine will be enhanced with high performance parallel processing and broad Web paradigms.

  3. Designing a Pedagogical Model for Web Engineering Education: An Evolutionary Perspective

    Science.gov (United States)

    Hadjerrouit, Said

    2005-01-01

    In contrast to software engineering, which relies on relatively well established development approaches, there is a lack of a proven methodology that guides Web engineers in building reliable and effective Web-based systems. Currently, Web engineering lacks process models, architectures, suitable techniques and methods, quality assurance, and a…

  4. Comparison of Physics Frameworks for WebGL-Based Game Engine

    Directory of Open Access Journals (Sweden)

    Yogya Resa

    2014-03-01

    Full Text Available Recently, a new technology called WebGL shows a lot of potentials for developing games. However since this technology is still new, there are still many potentials in the game development area that are not explored yet. This paper tries to uncover the potential of integrating physics frameworks with WebGL technology in a game engine for developing 2D or 3D games. Specifically we integrated three open source physics frameworks: Bullet, Cannon, and JigLib into a WebGL-based game engine. Using experiment, we assessed these frameworks in terms of their correctness or accuracy, performance, completeness and compatibility. The results show that it is possible to integrate open source physics frameworks into a WebGLbased game engine, and Bullet is the best physics framework to be integrated into the WebGL-based game engine.

  5. Knowledge engineering in a temporal symantic web context

    NARCIS (Netherlands)

    Milea, D.V.; Frasincar, F.; Kaymak, U.; Schwabe, D.; Curbera, F.; Dantzig, P.

    2008-01-01

    The emergence of Web 2.0 and the semantic Web as established technologies is fostering a whole new breed of Web applications and systems. These are often centered around knowledge engineering and context awareness. However, adequate temporal formalisms underlying context awareness are currently

  6. Sexual information seeking on web search engines.

    Science.gov (United States)

    Spink, Amanda; Koricich, Andrew; Jansen, B J; Cole, Charles

    2004-02-01

    Sexual information seeking is an important element within human information behavior. Seeking sexually related information on the Internet takes many forms and channels, including chat rooms discussions, accessing Websites or searching Web search engines for sexual materials. The study of sexual Web queries provides insight into sexually-related information-seeking behavior, of value to Web users and providers alike. We qualitatively analyzed queries from logs of 1,025,910 Alta Vista and AlltheWeb.com Web user queries from 2001. We compared the differences in sexually-related Web searching between Alta Vista and AlltheWeb.com users. Differences were found in session duration, query outcomes, and search term choices. Implications of the findings for sexual information seeking are discussed.

  7. Strategic Outsourcing in the German Engine Building Industry

    DEFF Research Database (Denmark)

    Gretzinger, Susanne

    2008-01-01

    Outsourcing is an organizational measure that changesthe ressource dependencies of a Company. In this paper, a framework is developed from the perspective of the ressource dependence approach to explain strategic outsourcing in the German engine building industry. On the basis of the NIFA panel...

  8. A study of medical and health queries to web search engines.

    Science.gov (United States)

    Spink, Amanda; Yang, Yin; Jansen, Jim; Nykanen, Pirrko; Lorence, Daniel P; Ozmutlu, Seda; Ozmutlu, H Cenk

    2004-03-01

    This paper reports findings from an analysis of medical or health queries to different web search engines. We report results: (i). comparing samples of 10000 web queries taken randomly from 1.2 million query logs from the AlltheWeb.com and Excite.com commercial web search engines in 2001 for medical or health queries, (ii). comparing the 2001 findings from Excite and AlltheWeb.com users with results from a previous analysis of medical and health related queries from the Excite Web search engine for 1997 and 1999, and (iii). medical or health advice-seeking queries beginning with the word 'should'. Findings suggest: (i). a small percentage of web queries are medical or health related, (ii). the top five categories of medical or health queries were: general health, weight issues, reproductive health and puberty, pregnancy/obstetrics, and human relationships, and (iii). over time, the medical and health queries may have declined as a proportion of all web queries, as the use of specialized medical/health websites and e-commerce-related queries has increased. Findings provide insights into medical and health-related web querying and suggests some implications for the use of the general web search engines when seeking medical/health information.

  9. F-OWL: An Inference Engine for Semantic Web

    Science.gov (United States)

    Zou, Youyong; Finin, Tim; Chen, Harry

    2004-01-01

    Understanding and using the data and knowledge encoded in semantic web documents requires an inference engine. F-OWL is an inference engine for the semantic web language OWL language based on F-logic, an approach to defining frame-based systems in logic. F-OWL is implemented using XSB and Flora-2 and takes full advantage of their features. We describe how F-OWL computes ontology entailment and compare it with other description logic based approaches. We also describe TAGA, a trading agent environment that we have used as a test bed for F-OWL and to explore how multiagent systems can use semantic web concepts and technology.

  10. Ressources minières en Afrique : Quelle réglementation pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ressources minières en Afrique : Quelle réglementation pour le développement ? Couverture du livre Ressources minières en Afrique : Quelle réglementation pour le développement ? Directeur(s):. Bonnie Campbell. Maison(s) d'édition: Presses de l'Université du Québec, CRDI. 6 juillet 2009. ISBN : 9782760525214.

  11. Système de recommandation des services web sémantiques.

    OpenAIRE

    KARAOUZENE, Meryem

    2015-01-01

    : Les systèmes de recommandation sont capables d’estimer l’intérêt d’un utilisateur pour une ressource donnée à partir de certaines informations relatives à d’autres utilisateurs similaires et aux propriétés des ressources. Dans ce mémoire nous avons présenté les phases d’une application sur ce domaine en introduisant la notion de recommandation sociale basant sur le filtrage collaboratif pour structurer les services web sémantique, on Calculant des similarités entre items pour...

  12. The invisible Web uncovering information sources search engines can't see

    CERN Document Server

    Sherman, Chris

    2001-01-01

    Enormous expanses of the Internet are unreachable with standard web search engines. This book provides the key to finding these hidden resources by identifying how to uncover and use invisible web resources. Mapping the invisible Web, when and how to use it, assessing the validity of the information, and the future of Web searching are topics covered in detail. Only 16 percent of Net-based information can be located using a general search engine. The other 84 percent is what is referred to as the invisible Web-made up of information stored in databases. Unlike pages on the visible Web, informa

  13. Web Spam, Social Propaganda and the Evolution of Search Engine Rankings

    Science.gov (United States)

    Metaxas, Panagiotis Takis

    Search Engines have greatly influenced the way we experience the web. Since the early days of the web, users have been relying on them to get informed and make decisions. When the web was relatively small, web directories were built and maintained using human experts to screen and categorize pages according to their characteristics. By the mid 1990's, however, it was apparent that the human expert model of categorizing web pages does not scale. The first search engines appeared and they have been evolving ever since, taking over the role that web directories used to play.

  14. Specification framework for engineering adaptive web applications

    NARCIS (Netherlands)

    Frasincar, F.; Houben, G.J.P.M.; Vdovják, R.

    2002-01-01

    The growing demand for data-driven Web applications has led to the need for a structured and controlled approach to the engineering of such applications. Both designers and developers need a framework that in all stages of the engineering process allows them to specify the relevant aspects of the

  15. Directeur, Ressources Humaines | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Jouer un rôle de leader et établir, dans la planification stratégique du CRDI (qui ... du fonctionnement (administration de la rémunération, recrutement, dotation, ... le vice-président, Ressources, établir le programme des politiques stratégiques ...

  16. Using the open Web as an information resource and scholarly Web search engines as retrieval tools for academic and research purposes

    Directory of Open Access Journals (Sweden)

    Filistea Naude

    2010-08-01

    Full Text Available This study provided insight into the significance of the open Web as an information resource and Web search engines as research tools amongst academics. The academic staff establishment of the University of South Africa (Unisa was invited to participate in a questionnaire survey and included 1188 staff members from five colleges. This study culminated in a PhD dissertation in 2008. One hundred and eighty seven respondents participated in the survey which gave a response rate of 15.7%. The results of this study show that academics have indeed accepted the open Web as a useful information resource and Web search engines as retrieval tools when seeking information for academic and research work. The majority of respondents used the open Web and Web search engines on a daily or weekly basis to source academic and research information. The main obstacles presented by using the open Web and Web search engines included lack of time to search and browse the Web, information overload, poor network speed and the slow downloading speed of webpages.

  17. Using the open Web as an information resource and scholarly Web search engines as retrieval tools for academic and research purposes

    Directory of Open Access Journals (Sweden)

    Filistea Naude

    2010-12-01

    Full Text Available This study provided insight into the significance of the open Web as an information resource and Web search engines as research tools amongst academics. The academic staff establishment of the University of South Africa (Unisa was invited to participate in a questionnaire survey and included 1188 staff members from five colleges. This study culminated in a PhD dissertation in 2008. One hundred and eighty seven respondents participated in the survey which gave a response rate of 15.7%. The results of this study show that academics have indeed accepted the open Web as a useful information resource and Web search engines as retrieval tools when seeking information for academic and research work. The majority of respondents used the open Web and Web search engines on a daily or weekly basis to source academic and research information. The main obstacles presented by using the open Web and Web search engines included lack of time to search and browse the Web, information overload, poor network speed and the slow downloading speed of webpages.

  18. Geothermal Resources in China Les ressources géothermiques de la Chine

    Directory of Open Access Journals (Sweden)

    An K. S.

    2006-11-01

    Full Text Available The present paper deals mainly with the distribution features, briefly describes the geology in the three geothermal fields of different types in Beijing, Yangbajing of Xizang (Tibet, and Dengwu of Guangdong, and finally gives on account of the development and utilization of geothermal resources. Up to now, more, than 2,500 geothermal water points (including hot springs, hot-water wells, and hot water in mines have been found. Four major geothermal zones and three basic types of geothermal resources can be preliminarily divided. In China, geothermal resources have been used for the purposes of power generating, industry and agriculture, medical treatment, etc. This article contains a sketch map showing the distribution of geothermal water in China. Cet article porte sur les caractéristiques de répartition, les types essentiels et les conditions de formation des ressources géothermiques, explique brièvement la géologie de trois types différents de champs géothermiques : Pékin, Yanbajin de Xiang (Tibet et de Dengwu de Guangdong et enfin présente l'exploitation et l'utilisation des ressources géothermiques. Jusqu'à présent, on a découvert plus de 2500 points d'eaux géothermiques (y compris sources thermales, puits des eaux thermales et les eaux thermales apparues dans les mines. lis sont subdivisés en quatre zones géothermiques principales et trois types essentiels de ressources géothermiques. Les ressources géothermiques ont trouvé leur utilisation dans la production de l'électricité, dans l'industrie, l'agriculture et le traitement médical, etc. On trouve dans cet article une esquisse de répartition des ressources géothermiques de la Chine.

  19. Gestionnaire, Solutions d'affaires en ressources humaines | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Gestion des ressources humaines du CRDI (stratégie et planification) ... mise en oeuvre des stratégies et des politiques ainsi qu'à l'amélioration continue dans .... les domaines des RH suivants : acquisition de talents (dotation et recrutement), ...

  20. Categorization of web pages - Performance enhancement to search engine

    Digital Repository Service at National Institute of Oceanography (India)

    Lakshminarayana, S.

    of Artificial Intelligence, Volume III. Los Altos, CA.: William Kaufmann. pp 1-74. 18. Brin, S. & Page, L. (1998). The anatomy of a large scale hyper-textual web search engine. In Proceedings of the seventh World Wide Web conference, Brisbane, Australia. 19...

  1. Citations des ressources électroniques dans les publications scientifiques : analyse comparée et stratégie des liens

    OpenAIRE

    Chartron , Ghislaine; Caillon , Elisabeth

    2008-01-01

    International audience; Cette communication s'intéresse aux nouvelles dimensions de la citation dans les textes scientifiques dans le contexte numérique. A l'appui d'une étude exploratoire quantitative menée fin 2007 et début 2008 dans le domaine de la biologie moléculaire, de la physique appliquée et de l'économie-gestion, les résultats montrent une faible intégration de ressources Web dans les textes (en dehors des versions en ligne des vecteurs traditionnels), sauf pour la biologie molécul...

  2. Approche pour la recommandation de ressources pédagogiques basée sur les liens sociaux

    OpenAIRE

    Tadlaoui , Mohammed; George , Sébastien; Sehaba , Karim

    2015-01-01

    Conférence EIAH 2015; Les systèmes de recommandation ont pour objectif de proposer des ressources pertinentes à une personne en utilisant certaines informations sur les utilisateurs et les ressources du système. Notre travail s’intègre dans le contexte des systèmes de recommandation de ressources pédagogiques et plus particulièrement des systèmes qui utilisent des informations sociales. En se basant sur les résultats de recherche dans le domaine des systèmes de recommandation, des réseaux soc...

  3. TIC pour un accès équitable aux ressources humaines en sante en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ce projet vise à mieux comprendre comment les TIC peuvent faciliter la distribution équitable des ressources humaines en santé en renforçant et consolidant des activités ... Technologies de l'Information et de la Communication (TIC) pour un Accès équitable aux Ressources Humaines en santé qualifiées, motivées et bien ...

  4. Dynamics of a macroscopic model characterizing mutualism of search engines and web sites

    Science.gov (United States)

    Wang, Yuanshi; Wu, Hong

    2006-05-01

    We present a model to describe the mutualism relationship between search engines and web sites. In the model, search engines and web sites benefit from each other while the search engines are derived products of the web sites and cannot survive independently. Our goal is to show strategies for the search engines to survive in the internet market. From mathematical analysis of the model, we show that mutualism does not always result in survival. We show various conditions under which the search engines would tend to extinction, persist or grow explosively. Then by the conditions, we deduce a series of strategies for the search engines to survive in the internet market. We present conditions under which the initial number of consumers of the search engines has little contribution to their persistence, which is in agreement with the results in previous works. Furthermore, we show novel conditions under which the initial value plays an important role in the persistence of the search engines and deduce new strategies. We also give suggestions for the web sites to cooperate with the search engines in order to form a win-win situation.

  5. A World Wide Web Region-Based Image Search Engine

    DEFF Research Database (Denmark)

    Kompatsiaris, Ioannis; Triantafyllou, Evangelia; Strintzis, Michael G.

    2001-01-01

    In this paper the development of an intelligent image content-based search engine for the World Wide Web is presented. This system will offer a new form of media representation and access of content available in WWW. Information Web Crawlers continuously traverse the Internet and collect images...

  6. Classifying web genres in context: a case study documenting the web genres used by a software engineer

    NARCIS (Netherlands)

    Montesi, M.; Navarrete, T.

    2008-01-01

    This case study analyzes the Internet-based resources that a software engineer uses in his daily work. Methodologically, we studied the web browser history of the participant, classifying all the web pages he had seen over a period of 12 days into web genres. We interviewed him before and after the

  7. Virtual Reference Services through Web Search Engines: Study of Academic Libraries in Pakistan

    Directory of Open Access Journals (Sweden)

    Rubia Khan

    2017-03-01

    Full Text Available Web search engines (WSE are powerful and popular tools in the field of information service management. This study is an attempt to examine the impact and usefulness of web search engines in providing virtual reference services (VRS within academic libraries in Pakistan. The study also attempts to investigate the relevant expertise and skills of library professionals in providing digital reference services (DRS efficiently using web search engines. Methodology used in this study is quantitative in nature. The data was collected from fifty public and private sector universities in Pakistan using a structured questionnaire. Microsoft Excel and SPSS were used for data analysis. The study concludes that web search engines are commonly used by librarians to help users (especially research scholars by providing digital reference services. The study also finds a positive correlation between use of web search engines and quality of digital reference services provided to library users. It is concluded that although search engines have increased the expectations of users and are really big competitors to a library’s reference desk, they are however not an alternative to reference service. Findings reveal that search engines pose numerous challenges for librarians and the study also attempts to bring together possible remedial measures. This study is useful for library professionals to understand the importance of search engines in providing VRS. The study also provides an intellectual comparison among different search engines, their capabilities, limitations, challenges and opportunities to provide VRS effectively in libraries.

  8. Web Feet Guide to Search Engines: Finding It on the Net.

    Science.gov (United States)

    Web Feet, 2001

    2001-01-01

    This guide to search engines for the World Wide Web discusses selecting the right search engine; interpreting search results; major search engines; online tutorials and guides; search engines for kids; specialized search tools for various subjects; and other specialized engines and gateways. (LRW)

  9. Coordonnateur, (h/f) Ressources humaines | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Sous la direction de directrice des ressources humaines, le coordonnateur, ... est le principal responsable de la gestion des dossiers papier et électroniques de la ... ordre de priorité, tenir l'emploi du temps à jour, gérer un système de contrôle, ...

  10. Adding a Visualization Feature to Web Search Engines: It’s Time

    Energy Technology Data Exchange (ETDEWEB)

    Wong, Pak C.

    2008-11-11

    Since the first world wide web (WWW) search engine quietly entered our lives in 1994, the “information need” behind web searching has rapidly grown into a multi-billion dollar business that dominates the internet landscape, drives e-commerce traffic, propels global economy, and affects the lives of the whole human race. Today’s search engines are faster, smarter, and more powerful than those released just a few years ago. With the vast investment pouring into research and development by leading web technology providers and the intense emotion behind corporate slogans such as “win the web” or “take back the web,” I can’t help but ask why are we still using the very same “text-only” interface that was used 13 years ago to browse our search engine results pages (SERPs)? Why has the SERP interface technology lagged so far behind in the web evolution when the corresponding search technology has advanced so rapidly? In this article I explore some current SERP interface issues, suggest a simple but practical visual-based interface design approach, and argue why a visual approach can be a strong candidate for tomorrow’s SERP interface.

  11. Comparing the Scale of Web Subject Directories Precision in Technical-Engineering Information Retrieval

    Directory of Open Access Journals (Sweden)

    Mehrdokht Wazirpour Keshmiri

    2012-07-01

    Full Text Available The main purpose of this research was to compare the scale of web subject directories precision in information retrieval of technical-engineering science. Information gathering was documentary and webometric. Keywords of technical-engineering science were chosen at twenty different subjects from IEEE (Institute of Electrical and Electronics Engineers and engineering magazines that situated in sciencedirect site. These keywords are used at five subject directories Yahoo, Google, Infomine, Intute, Dmoz, that were web directories high-utilization. Usually first results in searching tools are connected to searching keywords. Because, first ten results was evaluated in every search. These assessments to consist of scale of precision, scale of error, scale retrieval items in technical-engineering categories to retrieval items entirely. The used criteria for determining the scale of precision that was according to high-utilization standards in different documents, to consist of presence of the keywords in title, appearance of keywords at the part of web retrieved pages, keywords adjacency, URL of page, page description and subject categories. Information analysis was according to Kruskal-Wallis Test and L.S.D fisher. Results revealed that there was meaningful difference about precision of web subject directories in information retrieval of technical-engineering science, Therefore this theory was confirmed.web subject directories ranked from point of precision as follows. Google, Yahoo, Intute, Dmoz, and Infomine. The scale of observed error at the first results was another criterion that was used for comparing web subject directories. In this research, Yahoo had minimum scale of error and Infomine had most of error. This research also compared the scale of retrieval items in all of categories web subject directories entirely to retrieval items in technical-engineering categories, results revealed that there was meaningful difference between them. And

  12. Exploiting Semantic Web Technologies to Develop OWL-Based Clinical Practice Guideline Execution Engines.

    Science.gov (United States)

    Jafarpour, Borna; Abidi, Samina Raza; Abidi, Syed Sibte Raza

    2016-01-01

    Computerizing paper-based CPG and then executing them can provide evidence-informed decision support to physicians at the point of care. Semantic web technologies especially web ontology language (OWL) ontologies have been profusely used to represent computerized CPG. Using semantic web reasoning capabilities to execute OWL-based computerized CPG unties them from a specific custom-built CPG execution engine and increases their shareability as any OWL reasoner and triple store can be utilized for CPG execution. However, existing semantic web reasoning-based CPG execution engines suffer from lack of ability to execute CPG with high levels of expressivity, high cognitive load of computerization of paper-based CPG and updating their computerized versions. In order to address these limitations, we have developed three CPG execution engines based on OWL 1 DL, OWL 2 DL and OWL 2 DL + semantic web rule language (SWRL). OWL 1 DL serves as the base execution engine capable of executing a wide range of CPG constructs, however for executing highly complex CPG the OWL 2 DL and OWL 2 DL + SWRL offer additional executional capabilities. We evaluated the technical performance and medical correctness of our execution engines using a range of CPG. Technical evaluations show the efficiency of our CPG execution engines in terms of CPU time and validity of the generated recommendation in comparison to existing CPG execution engines. Medical evaluations by domain experts show the validity of the CPG-mediated therapy plans in terms of relevance, safety, and ordering for a wide range of patient scenarios.

  13. Web Services as Product Experience Augmenters and the Implications for Requirements Engineering: A Position Paper

    NARCIS (Netherlands)

    van Eck, Pascal; Nijholt, Antinus; Wieringa, Roelf J.

    There is currently little insight into what requirement engineering for web services is and in which context it will be carried out. In this position paper, we investigate requirements engineering for a special kind of web services, namely web services that are used to augment the perceived value of

  14. Gestion des ressources hydriques dans un contexte de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Gestion des ressources hydriques dans un contexte de changements climatiques dans des établissements humains côtiers en Angola. Durant la guerre civile angolaise, de très nombreux habitants des zones de conflit en milieu rural se sont déplacés vers des endroits vulnérables aux phénomènes climatiques extrêmes, ...

  15. Key word placing in Web page body text to increase visibility to search engines

    Directory of Open Access Journals (Sweden)

    W. T. Kritzinger

    2007-11-01

    Full Text Available The growth of the World Wide Web has spawned a wide variety of new information sources, which has also left users with the daunting task of determining which sources are valid. Many users rely on the Web as an information source because of the low cost of information retrieval. It is also claimed that the Web has evolved into a powerful business tool. Examples include highly popular business services such as Amazon.com and Kalahari.net. It is estimated that around 80% of users utilize search engines to locate information on the Internet. This, by implication, places emphasis on the underlying importance of Web pages being listed on search engines indices. Empirical evidence that the placement of key words in certain areas of the body text will have an influence on the Web sites' visibility to search engines could not be found in the literature. The result of two experiments indicated that key words should be concentrated towards the top, and diluted towards the bottom of a Web page to increase visibility. However, care should be taken in terms of key word density, to prevent search engine algorithms from raising the spam alarm.

  16. Modules de formation en durabilité et mobilisation des ressources

    International Development Research Centre (IDRC) Digital Library (Canada)

    Wind

    apprendre à lier la mobilisation des ressources à la planification stratégique; ... chercheurs et des ONG collaborant à des initiatives de défense de politiques. La ...... établissements membres à recruter des stagiaires qui ont contribué à la.

  17. Web components and the semantic web

    OpenAIRE

    Casey, Maire; Pahl, Claus

    2003-01-01

    Component-based software engineering on the Web differs from traditional component and software engineering. We investigate Web component engineering activites that are crucial for the development,com position, and deployment of components on the Web. The current Web Services and Semantic Web initiatives strongly influence our work. Focussing on Web component composition we develop description and reasoning techniques that support a component developer in the composition activities,fo cussing...

  18. 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 in such a......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...... in such an environment occurs, a compensation can be initiated to recover from the failure. However, current environments have only limited capabilities for compensations, and are usually based on backward recovery. In this paper, we introduce an engineering approach and an environment to deal with advanced...... 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...

  19. Semantic Web technologies in software engineering

    OpenAIRE

    Gall, H C; Reif, G

    2008-01-01

    Over the years, the software engineering community has developed various tools to support the specification, development, and maintainance of software. Many of these tools use proprietary data formats to store artifacts which hamper interoperability. However, the Semantic Web provides a common framework that allows data to be shared and reused across application, enterprise, and community boundaries. Ontologies are used define the concepts in the domain of discourse and their relationships an...

  20. Situational Requirements Engineering for the Development of Content Management System-based Web Applications

    NARCIS (Netherlands)

    Souer, J.; van de Weerd, I.; Versendaal, J.M.; Brinkkemper, S.

    2005-01-01

    Web applications are evolving towards strong content-centered Web applications. The development processes and implementation of these applications are unlike the development and implementation of traditional information systems. In this paper we propose WebEngineering Method; a method for developing

  1. Formulation de farine de fonio enrichie en ressources alimentaires ...

    African Journals Online (AJOL)

    Mots clés: fonio (Digitaria exilis), alimentation complémentaire, ressources alimentaires locales au Bénin, enfants de 6 – 23 mois, formulation de farine de céréale. English Title: Developing a fonio flour enriched with local food resources for complementary feeding of young children in Benin. English Abstract. The objective ...

  2. LA COGESTION DES RESSOURCES NATURELLES - Abrégé ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    6 oct. 2011 ... L'ENJEU Selon les estimations, de 600 à 900 millions de paysans pauvres habitent les régions marginales, écologiquement fragiles, des pays en développement. Leur survie dépend largement de l'accès aux ressources naturelles qui les entourent, mais la croissance démographique et l'extraction ...

  3. La divulgation de l’origine des ressources génétiques : une contribution du droit des brevets au développement durable?

    OpenAIRE

    Morin, Jean-Frédéric

    2005-01-01

    La Convention sur la diversité biologique prévoit que les avantages qui résultent de l'utilisation des ressources génétiques doivent être partagés avec les fournisseurs de ces ressources. Pour faciliter l’atteinte de cet objectif et exercer un suivi sur les transferts de ressources génétiques, un nombre croissant de pays imposent aux déposants de divulguer dans leurs demandes de brevets l’origine géographique des ressources génétiques utilisées pour développer l’invention revendiq...

  4. Afrique : ressources minières, environnement et gouvernance ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    25 janv. 2011 ... ils regorgent de richesses inouïes », assure Bonnie Campbell, directrice du Groupe de recherche sur les activités minières en Afrique (GRAMA) et titulaire de la Chaire C.-A. Poissant de recherche sur la gouvernance et l'aide au développement, faisant référence aux ressources minières et pétrolières dont ...

  5. Engineering the presentation layer of adaptable web information systems

    NARCIS (Netherlands)

    Fiala, Z.; Frasincar, F.; Hinz, M.; Houben, G.J.P.M.; Barna, P.; Meissner, K.; Koch, N.; Fraternali, P.; Wirsing, M.

    2004-01-01

    Engineering adaptable Web Information Systems (WIS) requires systematic design models and specification frameworks. A complete model-driven methodology like Hera distinguishes between the conceptual, navigational, and presentational aspects of WIS design and identifies different adaptation hot-spots

  6. Faut-il brûler les dictionnaires ? Ou comment les ressources numériques ont révolutionné les recherches en morphologie

    Directory of Open Access Journals (Sweden)

    Namer Fiammetta

    2012-07-01

    Full Text Available Pour mener leurs études, les morphologues, et, singulièrement parmi eux, ceux qui traitent du lexique construit, sont pris entre deux tensions : utiliser les données issues des dictionnaires, réputées fiables parce que passées au travers du crible de l’institutionnalisation, ou se fonder sur des données authentiques, produites dans des situations écologiques. Bien qu’inspirant encore de la défiance, le Web devient alors la ressource par excellence. Les ressources numérisées telles que les archives de journaux ou les bases de données de textes littéraires constituent un moyen terme entre ces deux pratiques : elles permettent d’effectuer des recherches basées sur l’usage, tout en offrant la garantie d’une certaine tenue linguistique de la part des scripteurs, la plupart du temps identifiables. Dans cette communication, nous nous demanderons si les dictionnaires méritent la confiance que continuent de leur octroyer les morphologues ou, plus exactement, si une morphologie qui puise ses données dans les seuls dictionnaires peut encore avoir cours au 21e siècle. Pour engager cette discussion, nous commencerons par poser la question de l’existence, pour un lexème construit. Nous exposerons ensuite ce que constitue une morphologie basée sur l’usage, puis donnerons un aperçu des types de recherches que permettent de réaliser les ressources non dictionnairiques. La conclusion sera que, si les dictionnaires continuent d'avoir droit de cité dans la panoplie du morphologue, une morphologie uniquement basée sur les données qu'ils contiennent passerait outre de nombreuses recherches, plus fructueuses les unes que les autres.

  7. Effects of Web-Based Interactive Modules on Engineering Students' Learning Motivations

    Science.gov (United States)

    Bai, Haiyan; Aman, Amjad; Xu, Yunjun; Orlovskaya, Nina; Zhou, Mingming

    2016-01-01

    The purpose of this study is to assess the impact of a newly developed modules, Interactive Web-Based Visualization Tools for Gluing Undergraduate Fuel Cell Systems Courses system (IGLU), on learning motivations of engineering students using two samples (n[subscript 1] = 144 and n[subscript 2] = 135) from senior engineering classes. The…

  8. RESSOURCES ÉLECTRONIQUES ET BIBLIOTHÈQUES JURIDIQUES

    OpenAIRE

    Coulon, Françoise

    2013-01-01

    Ce mémoire examine l'intégration des ressources électroniques en bibliothèque juridique. Il se nourrit de plusieurs études, tant sur la progression de la documentation électronique dans diverses bibliothèques, que sur l'évolution de l'offre éditoriale et l'évolution des usages et des pratiques induits par l'électronique dans les bibliothèques. Afin de dégager des tendances et des enjeux propres aux bibliothèques juridiques, cette étude se complète par une enquête de terrain à travers l'observ...

  9. Agent de ressourcement (h/f) | CRDI - Centre de recherches pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Résumé des fonctions L'agent de ressourcement est le point de ... Tenir à jour les données consignées dans les modules du système de gestion des ... au chargé de projet des recommandations fondées sur des renseignements à jour et ...

  10. Ressources | CRDI - Centre de recherches pour le développement ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Grâce à la bibliothèque de ressources du CRDI, nous partageons nos résultats, fournissons un soutien aux chercheurs et offrons des outils aux acteurs du développement. Le CRDI soutient la recherche qui examine d'importants problèmes en matière de développement, trouve des solutions durables et enrichit les ...

  11. A Software Engineering Approach based on WebML and BPMN to the Mediation Scenario of the SWS Challenge

    Science.gov (United States)

    Brambilla, Marco; Ceri, Stefano; Valle, Emanuele Della; Facca, Federico M.; Tziviskou, Christina

    Although Semantic Web Services are expected to produce a revolution in the development of Web-based systems, very few enterprise-wide design experiences are available; one of the main reasons is the lack of sound Software Engineering methods and tools for the deployment of Semantic Web applications. In this chapter, we present an approach to software development for the Semantic Web based on classical Software Engineering methods (i.e., formal business process development, computer-aided and component-based software design, and automatic code generation) and on semantic methods and tools (i.e., ontology engineering, semantic service annotation and discovery).

  12. The Effectiveness of Web Search Engines to Index New Sites from Different Countries

    Science.gov (United States)

    Pirkola, Ari

    2009-01-01

    Introduction: Investigates how effectively Web search engines index new sites from different countries. The primary interest is whether new sites are indexed equally or whether search engines are biased towards certain countries. If major search engines show biased coverage it can be considered a significant economic and political problem because…

  13. Agent de gestion des ressources (h/f) | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Sous la direction du vice-président, Ressources, et chef de la direction ... moyens de susciter et de gérer l'évolution des processus, des outils et des politiques; ... la mise à jour des instruments de délégation des pouvoirs, et les préparer pour ...

  14. Reverse Engineering and Software Products Reuse to Teach Collaborative Web Portals: A Case Study with Final-Year Computer Science Students

    Science.gov (United States)

    Medina-Dominguez, Fuensanta; Sanchez-Segura, Maria-Isabel; Mora-Soto, Arturo; Amescua, Antonio

    2010-01-01

    The development of collaborative Web applications does not follow a software engineering methodology. This is because when university students study Web applications in general, and collaborative Web portals in particular, they are not being trained in the use of software engineering techniques to develop collaborative Web portals. This paper…

  15. 25 Years of Model-Driven Web Engineering: What we achieved, What is missing

    Directory of Open Access Journals (Sweden)

    Gustavo Rossi

    2016-12-01

    Full Text Available Model-Driven Web Engineering (MDWE approaches aim to improve the Web applications development process by focusing on modeling instead of coding, and deriving the running application by transformations from conceptual models to code. The emergence of the Interaction Flow Modeling Language (IFML has been an important milestone in the evolution of Web modeling languages, indicating not only the maturity of the field but also a final convergence of languages. In this paper we explain the evolution of modeling and design approaches since the early years (in the 90’s detailing the forces which drove that evolution and discussing the strengths and weaknesses of some of those approaches. A brief presentation of the IFML is accompanied with a thorough analysis of the most important achievements of the MDWE community as well as the problems and obstacles that hinder the dissemination of model-driven techniques in the Web engineering field.

  16. Index Compression and Efficient Query Processing in Large Web Search Engines

    Science.gov (United States)

    Ding, Shuai

    2013-01-01

    The inverted index is the main data structure used by all the major search engines. Search engines build an inverted index on their collection to speed up query processing. As the size of the web grows, the length of the inverted list structures, which can easily grow to hundreds of MBs or even GBs for common terms (roughly linear in the size of…

  17. Research on the optimization strategy of web search engine based on data mining

    Science.gov (United States)

    Chen, Ronghua

    2018-04-01

    With the wide application of search engines, web site information has become an important way for people to obtain information. People have found that they are growing in an increasingly explosive manner. Web site information is verydifficult to find the information they need, and now the search engine can not meet the need, so there is an urgent need for the network to provide website personalized information service, data mining technology for this new challenge is to find a breakthrough. In order to improve people's accuracy of finding information from websites, a website search engine optimization strategy based on data mining is proposed, and verified by website search engine optimization experiment. The results show that the proposed strategy improves the accuracy of the people to find information, and reduces the time for people to find information. It has an important practical value.

  18. L'Empowerment au coeur des bouleversements induits par les TIC dans la gestion des ressources humaines

    OpenAIRE

    Blavier, André

    2012-01-01

    Observer l’influence des TIC (Technologies de l’Information et de la Communication” sur les ressources humaines à la lumière du seul débat “pour ou contre les réseaux sociaux dans l’entreprise ou l’organisation ?” est une approche bien trop restrictive. Les défis relatifs à l’évolution des ressources humaines s’inscrivent dans une perspective plus large, celle d’un environnement numérique global. Comme l’a souligné le rapport “Digital Economy Rankings 2010” d’IBM en collaboration avec l’Econ...

  19. un_focus - La cogestion des ressources naturelles : Réduire la ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    M. Tyler était auparavant chef d'équipe du programme Gestion communautaire des ressources naturelles du CRDI en Asie. Dans ces fonctions, il a administré pendant sept ans un portefeuille de plus de 75 projets exécutés dans 12 pays. Il a obtenu un doctorat en aménagement urbain et régional de l'Université de la ...

  20. Using Web 2.0 Techniques in NASA's Ares Engineering Operations Network (AEON) Environment - First Impressions

    Science.gov (United States)

    Scott, David W.

    2010-01-01

    The Mission Operations Laboratory (MOL) at Marshall Space Flight Center (MSFC) is responsible for Engineering Support capability for NASA s Ares rocket development and operations. In pursuit of this, MOL is building the Ares Engineering and Operations Network (AEON), a web-based portal to support and simplify two critical activities: Access and analyze Ares manufacturing, test, and flight performance data, with access to Shuttle data for comparison Establish and maintain collaborative communities within the Ares teams/subteams and with other projects, e.g., Space Shuttle, International Space Station (ISS). AEON seeks to provide a seamless interface to a) locally developed engineering applications and b) a Commercial-Off-The-Shelf (COTS) collaborative environment that includes Web 2.0 capabilities, e.g., blogging, wikis, and social networking. This paper discusses how Web 2.0 might be applied to the typically conservative engineering support arena, based on feedback from Integration, Verification, and Validation (IV&V) testing and on searching for their use in similar environments.

  1. Curating the Web: Building a Google Custom Search Engine for the Arts

    Science.gov (United States)

    Hennesy, Cody; Bowman, John

    2008-01-01

    Google's first foray onto the web made search simple and results relevant. With its Co-op platform, Google has taken another step toward dramatically increasing the relevancy of search results, further adapting the World Wide Web to local needs. Google Custom Search Engine, a tool on the Co-op platform, puts one in control of his or her own search…

  2. Search Engine Ranking, Quality, and Content of Web Pages That Are Critical Versus Noncritical of Human Papillomavirus Vaccine.

    Science.gov (United States)

    Fu, Linda Y; Zook, Kathleen; Spoehr-Labutta, Zachary; Hu, Pamela; Joseph, Jill G

    2016-01-01

    Online information can influence attitudes toward vaccination. The aim of the present study was to provide a systematic evaluation of the search engine ranking, quality, and content of Web pages that are critical versus noncritical of human papillomavirus (HPV) vaccination. We identified HPV vaccine-related Web pages with the Google search engine by entering 20 terms. We then assessed each Web page for critical versus noncritical bias and for the following quality indicators: authorship disclosure, source disclosure, attribution of at least one reference, currency, exclusion of testimonial accounts, and readability level less than ninth grade. We also determined Web page comprehensiveness in terms of mention of 14 HPV vaccine-relevant topics. Twenty searches yielded 116 unique Web pages. HPV vaccine-critical Web pages comprised roughly a third of the top, top 5- and top 10-ranking Web pages. The prevalence of HPV vaccine-critical Web pages was higher for queries that included term modifiers in addition to root terms. Compared with noncritical Web pages, Web pages critical of HPV vaccine overall had a lower quality score than those with a noncritical bias (p engine queries despite being of lower quality and less comprehensive than noncritical Web pages. Copyright © 2016 Society for Adolescent Health and Medicine. Published by Elsevier Inc. All rights reserved.

  3. Integrating Ecosystem Engineering and Food Web Ecology: Testing the Effect of Biogenic Reefs on the Food Web of a Soft-Bottom Intertidal Area.

    Science.gov (United States)

    De Smet, Bart; Fournier, Jérôme; De Troch, Marleen; Vincx, Magda; Vanaverbeke, Jan

    2015-01-01

    The potential of ecosystem engineers to modify the structure and dynamics of food webs has recently been hypothesised from a conceptual point of view. Empirical data on the integration of ecosystem engineers and food webs is however largely lacking. This paper investigates the hypothesised link based on a field sampling approach of intertidal biogenic aggregations created by the ecosystem engineer Lanice conchilega (Polychaeta, Terebellidae). The aggregations are known to have a considerable impact on the physical and biogeochemical characteristics of their environment and subsequently on the abundance and biomass of primary food sources and the macrofaunal (i.e. the macro-, hyper- and epibenthos) community. Therefore, we hypothesise that L. conchilega aggregations affect the structure, stability and isotopic niche of the consumer assemblage of a soft-bottom intertidal food web. Primary food sources and the bentho-pelagic consumer assemblage of a L. conchilega aggregation and a control area were sampled on two soft-bottom intertidal areas along the French coast and analysed for their stable isotopes. Despite the structural impacts of the ecosystem engineer on the associated macrofaunal community, the presence of L. conchilega aggregations only has a minor effect on the food web structure of soft-bottom intertidal areas. The isotopic niche width of the consumer communities of the L. conchilega aggregations and control areas are highly similar, implying that consumer taxa do not shift their diet when feeding in a L. conchilega aggregation. Besides, species packing and hence trophic redundancy were not affected, pointing to an unaltered stability of the food web in the presence of L. conchilega.

  4. L'optimisation des ressources : risques et possibilités pour la ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    jmarcil

    il y a modulation des risques. De nombreux bailleurs de fonds investissent de façon soutenue dans la recherche au service du développement, reconnaissant les risques inévitables que cela comporte. Ils estiment souvent que la meilleure manière d'aborder l'optimisation des ressources consacrées à la recherche est de ...

  5. Élaboration de politiques nationales sur l'accès aux ressources ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    amélioration des cultures et de gestion des ressources naturelles sont compromises. Les lois et les mécanismes en vigueur, comme les droits de propriété intellectuelle (DPI), ne conviennent pas à la protection du savoir traditionnel, car ils protègent les ...

  6. How to Boost Engineering Support Via Web 2.0 - Seeds for the Ares Project...and/or Yours?

    Science.gov (United States)

    Scott, David W.

    2010-01-01

    The Mission Operations Laboratory (MOL) at Marshall Space Flight Center (MSFC) is responsible for Engineering Support capability for NASA s Ares launch system development. In pursuit of this, MOL is building the Ares Engineering and Operations Network (AEON), a web-based portal intended to provide a seamless interface to support and simplify two critical activities: a) Access and analyze Ares manufacturing, test, and flight performance data, with access to Shuttle data for comparison. b) Provide archive storage for engineering instrumentation data to support engineering design, development, and test. A mix of NASA-written and COTS software provides engineering analysis tools. A by-product of using a data portal to access and display data is access to collaborative tools inherent in a Web 2.0 environment. This paper discusses how Web 2.0 techniques, particularly social media, might be applied to the traditionally conservative and formal engineering support arena. A related paper by the author [1] considers use

  7. A Webometric Analysis of ISI Medical Journals Using Yahoo, AltaVista, and All the Web Search Engines

    Directory of Open Access Journals (Sweden)

    Zohreh Zahedi

    2010-12-01

    Full Text Available The World Wide Web is an important information source for scholarly communications. Examining the inlinks via webometrics studies has attracted particular interests among information researchers. In this study, the number of inlinks to 69 ISI medical journals retrieved by Yahoo, AltaVista, and All The web Search Engines were examined via a comparative and Webometrics study. For data analysis, SPSS software was employed. Findings revealed that British Medical Journal website attracted the most links of all in the three search engines. There is a significant correlation between the number of External links and the ISI impact factor. The most significant correlation in the three search engines exists between external links of Yahoo and AltaVista (100% and the least correlation is found between external links of All The web & the number of pages of AltaVista (0.51. There is no significant difference between the internal links & the number of pages found by the three search engines. But in case of impact factors, significant differences are found between these three search engines. So, the study shows that journals with higher impact factor attract more links to their websites. It also indicates that the three search engines are significantly different in terms of total links, outlinks and web impact factors

  8. Modèles de gestion des ressources forestières du massif ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Expérimentation Participative et Adaptative de Modèles de Gestion des Ressources Forestières dans la Chaine Montagneuse de l'Atlas (Algérie, Maroc, Tunisie) : rapport final (17 mars 2009 au 18 septembre 2012). Download PDF. Reports. Unité de transformation de cire d'abeille (Commune de M'Sara). Download PDF ...

  9. WebVR——Web Virtual Reality Engine Based on P2P network

    OpenAIRE

    zhihan LV; Tengfei Yin; Yong Han; Yong Chen; Ge Chen

    2011-01-01

    WebVR, a multi-user online virtual reality engine, is introduced. The main contributions are mapping the geographical space and virtual space to the P2P overlay network space, and dividing the three spaces by quad-tree method. The geocoding is identified with Hash value, which is used to index the user list, terrain data, and the model object data. Sharing of data through improved Kademlia network model is designed and implemented. In this model, XOR algorithm is used to calculate the distanc...

  10. Impact de la gestion des ressources humaines sur la survie des ...

    African Journals Online (AJOL)

    A partir d'un indice composite, l'indice de gestion des ressources humaines ... (iv) la gestion de la performance, et (v) la formation et le développement du ... Même si à cause du type d'étude quasi-expérimentale réalisée (avant-après), nous ne ... GRH d'une organisation doit aussi devenir un objectif chiffré du management.

  11. Essai de Modélisation de la Gestion des ressources en eau dans la ...

    African Journals Online (AJOL)

    et de l'environnement, tenues a Dublin et a Rio de Janeiro en 1992. Depuis ces conférences ..... actuelle, de la charge de pollution, des ressources et des fournitures ..... Management (Case study: Saf-Saf River Basin, North. East of Algeria).

  12. Conflit armé en Colombie : différentes ressources, différents conflits ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Nouveau webinaire IWRA/CRDI sur les changements climatiques et la gestion adaptive de l'eau. L'Association internationale de ressources en eau (IWRA), en étroite collaboration avec le CRDI, organise un webinaire intitulé "Changements climatiques et gestion adaptive de l'eau: des... Voir davantageNouveau webinaire ...

  13. Web-page Prediction for Domain Specific Web-search using Boolean Bit Mask

    OpenAIRE

    Sinha, Sukanta; Duttagupta, Rana; Mukhopadhyay, Debajyoti

    2012-01-01

    Search Engine is a Web-page retrieval tool. Nowadays Web searchers utilize their time using an efficient search engine. To improve the performance of the search engine, we are introducing a unique mechanism which will give Web searchers more prominent search results. In this paper, we are going to discuss a domain specific Web search prototype which will generate the predicted Web-page list for user given search string using Boolean bit mask.

  14. Photonics Applications and Web Engineering: WILGA 2017

    Science.gov (United States)

    Romaniuk, Ryszard S.

    2017-08-01

    XLth Wilga Summer 2017 Symposium on Photonics Applications and Web Engineering was held on 28 May-4 June 2017. The Symposium gathered over 350 participants, mainly young researchers active in optics, optoelectronics, photonics, modern optics, mechatronics, applied physics, electronics technologies and applications. There were presented around 300 oral and poster papers in a few main topical tracks, which are traditional for Wilga, including: bio-photonics, optical sensory networks, photonics-electronics-mechatronics co-design and integration, large functional system design and maintenance, Internet of Things, measurement systems for astronomy, high energy physics experiments, and other. The paper is a traditional introduction to the 2017 WILGA Summer Symposium Proceedings, and digests some of the Symposium chosen key presentations. This year Symposium was divided to the following topical sessions/conferences: Optics, Optoelectronics and Photonics, Computational and Artificial Intelligence, Biomedical Applications, Astronomical and High Energy Physics Experiments Applications, Material Research and Engineering, and Advanced Photonics and Electronics Applications in Research and Industry.

  15. Les SIG-P au service d'une gestion durable des ressources ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Les SIG-P au service d'une gestion durable des ressources naturelles et de la sécurité alimentaire en Afrique. Les pays africains ont besoin de données convenables aux fins de la formulation et de la mise en oeuvre de politiques et de stratégies de sécurité alimentaire systématiques et cohérentes. Ces pays disposent de ...

  16. An assessment of the visibility of MeSH-indexed medical web catalogs through search engines.

    Science.gov (United States)

    Zweigenbaum, P; Darmoni, S J; Grabar, N; Douyère, M; Benichou, J

    2002-01-01

    Manually indexed Internet health catalogs such as CliniWeb or CISMeF provide resources for retrieving high-quality health information. Users of these quality-controlled subject gateways are most often referred to them by general search engines such as Google, AltaVista, etc. This raises several questions, among which the following: what is the relative visibility of medical Internet catalogs through search engines? This study addresses this issue by measuring and comparing the visibility of six major, MeSH-indexed health catalogs through four different search engines (AltaVista, Google, Lycos, Northern Light) in two languages (English and French). Over half a million queries were sent to the search engines; for most of these search engines, according to our measures at the time the queries were sent, the most visible catalog for English MeSH terms was CliniWeb and the most visible one for French MeSH terms was CISMeF.

  17. ICSE 2009 Tutorial - Semantic Web Technologies in Software Engineering

    OpenAIRE

    Gall, H C; Reif, G

    2009-01-01

    Over the years, the software engineering community has developed various tools to support the specification, development, and maintainance of software. Many of these tools use proprietary data formats to store artifacts which hamper interoperability. On the other hand, the Semantic Web provides a common framework that allows data to be shared and reused across application, enterprise, and community boundaries. Ontologies are used to define the concepts in the domain of discourse and their rel...

  18. Enhancing food engineering education with interactive web-based simulations

    OpenAIRE

    Alexandros Koulouris; Georgios Aroutidis; Dimitrios Vardalis; Petros Giannoulis; Paraskevi Karakosta

    2015-01-01

    In the traditional deductive approach in teaching any engineering topic, teachers would first expose students to the derivation of the equations that govern the behavior of a physical system and then demonstrate the use of equations through a limited number of textbook examples. This methodology, however, is rarely adequate to unmask the cause-effect and quantitative relationships between the system variables that the equations embody. Web-based simulation, which is the integration of simulat...

  19. Knowledge-based personalized search engine for the Web-based Human Musculoskeletal System Resources (HMSR) in biomechanics.

    Science.gov (United States)

    Dao, Tien Tuan; Hoang, Tuan Nha; Ta, Xuan Hien; Tho, Marie Christine Ho Ba

    2013-02-01

    Human musculoskeletal system resources of the human body are valuable for the learning and medical purposes. Internet-based information from conventional search engines such as Google or Yahoo cannot response to the need of useful, accurate, reliable and good-quality human musculoskeletal resources related to medical processes, pathological knowledge and practical expertise. In this present work, an advanced knowledge-based personalized search engine was developed. Our search engine was based on a client-server multi-layer multi-agent architecture and the principle of semantic web services to acquire dynamically accurate and reliable HMSR information by a semantic processing and visualization approach. A security-enhanced mechanism was applied to protect the medical information. A multi-agent crawler was implemented to develop a content-based database of HMSR information. A new semantic-based PageRank score with related mathematical formulas were also defined and implemented. As the results, semantic web service descriptions were presented in OWL, WSDL and OWL-S formats. Operational scenarios with related web-based interfaces for personal computers and mobile devices were presented and analyzed. Functional comparison between our knowledge-based search engine, a conventional search engine and a semantic search engine showed the originality and the robustness of our knowledge-based personalized search engine. In fact, our knowledge-based personalized search engine allows different users such as orthopedic patient and experts or healthcare system managers or medical students to access remotely into useful, accurate, reliable and good-quality HMSR information for their learning and medical purposes. Copyright © 2012 Elsevier Inc. All rights reserved.

  20. Photonics applications and web engineering: WILGA Summer 2016

    Science.gov (United States)

    Romaniuk, Ryszard S.

    2016-09-01

    Wilga Summer 2016 Symposium on Photonics Applications and Web Engineering was held on 29 May - 06 June. The Symposium gathered over 350 participants, mainly young researchers active in optics, optoelectronics, photonics, electronics technologies and applications. There were presented around 300 presentations in a few main topical tracks including: bio-photonics, optical sensory networks, photonics-electronics-mechatronics co-design and integration, large functional system design and maintenance, Internet of Thins, and other. The paper is an introduction the 2016 WILGA Summer Symposium Proceedings, and digests some of the Symposium chosen key presentations.

  1. Photonics applications and web engineering: WILGA Summer 2015

    Science.gov (United States)

    Romaniuk, Ryszard S.

    2015-09-01

    Wilga Summer 2015 Symposium on Photonics Applications and Web Engineering was held on 23-31 May. The Symposium gathered over 350 participants, mainly young researchers active in optics, optoelectronics, photonics, electronics technologies and applications. There were presented around 300 presentations in a few main topical tracks including: bio-photonics, optical sensory networks, photonics-electronics-mechatronics co-design and integration, large functional system design and maintenance, Internet of Thins, and other. The paper is an introduction the 2015 WILGA Summer Symposium Proceedings, and digests some of the Symposium chosen key presentations.

  2. Changes in users' mental models of Web search engines after ten ...

    African Journals Online (AJOL)

    Ward's Cluster analyses including the Pseudo T² Statistical analyses were used to determine the mental model clusters for the seventeen salient design features of Web search engines at each time point. The cubic clustering criterion (CCC) and the dendogram were conducted for each sample to help determine the number ...

  3. E-purchasing of power stations? Chance and restraints of e-purchasing in the energy sector; Kraftwerkskauf im Internet. Moeglichkeiten und Grenzen elektronischer Beschaffung in der Energiewirtschaft

    Energy Technology Data Exchange (ETDEWEB)

    Lueth, O.A.; Aust, E. [Trade2B.com AG (Germany)

    2001-07-01

    The most promising e-commerce opportunity in the energy sector is electronic sourcing via online bidding and online auctions respectively. Results of pilots show the way internet-platforms work and that even purchasing of a complex Power Station can be managed with a professional platform. [German] Fuer die Energiewirtschaft stecken die groessten E-Commerce-Potenziale im Bereich der elektronischen Beschaffung, vor allem durch elektronisch unterstuetzte Ausschreibungen. Der Beitrag schildert Ergebnisse erster Pilotprojekte und beschreibt die Voraussetzungen an Internet-Plattformen, die auch komplexe Ausschreibungen ermoeglichen - bis hin zur Ausschreibung komplexer Kraftwerksanlagen.

  4. Impacts de l'exploitation artisanale de l'or sur les ressources ...

    African Journals Online (AJOL)

    L'exploitation de l'or est devenue ces deux dernières années l'activité principale de la population de Kéméni, une localité située dans la Préfecture de Tchaoudjo (Région Centrale du Togo). La présente étude a identifié l'impact de cette activité sur les ressources naturelles. L'approche méthodologique s'est basée sur des ...

  5. Can Interactive Web-Based CAD Tools Improve the Learning of Engineering Drawing? A Case Study

    Science.gov (United States)

    Pando Cerra, Pablo; Suárez González, Jesús M.; Busto Parra, Bernardo; Rodríguez Ortiz, Diana; Álvarez Peñín, Pedro I.

    2014-01-01

    Many current Web-based learning environments facilitate the theoretical teaching of a subject but this may not be sufficient for those disciplines that require a significant use of graphic mechanisms to resolve problems. This research study looks at the use of an environment that can help students learn engineering drawing with Web-based CAD…

  6. Design and implementation of Web-based SDUV-FEL engineering database system

    International Nuclear Information System (INIS)

    Sun Xiaoying; Shen Liren; Dai Zhimin; Xie Dong

    2006-01-01

    A design of Web-based SDUV-FEL engineering database and its implementation are introduced. This system will save and offer static data and archived data of SDUV-FEL, and build a proper and effective platform for share of SDUV-FEL data. It offers usable and reliable SDUV-FEL data for operators and scientists. (authors)

  7. Using the open Web as an information resource and scholarly Web search engines as retrieval tools for academic and research purposes

    OpenAIRE

    Filistea Naude; Chris Rensleigh; Adeline S.A. du Toit

    2010-01-01

    This study provided insight into the significance of the open Web as an information resource and Web search engines as research tools amongst academics. The academic staff establishment of the University of South Africa (Unisa) was invited to participate in a questionnaire survey and included 1188 staff members from five colleges. This study culminated in a PhD dissertation in 2008. One hundred and eighty seven respondents participated in the survey which gave a response rate of 15.7%. The re...

  8. A Web portal for the Engineering and Equipment Data Management System at CERN

    International Nuclear Information System (INIS)

    Tsyganov, A; Petit, S; Martel, P; Milenkovic, S; Suwalska, A; Delamare, C; Widegren, D; Amerigo, S Mallon; Pettersson, T

    2010-01-01

    CERN, the European Laboratory for Particle Physics, located in Geneva - Switzerland, has recently started the Large Hadron Collider (LHC), a 27 km particle accelerator. The CERN Engineering and Equipment Data Management Service (EDMS) provides support for managing engineering and equipment information throughout the entire lifecycle of a project. Based on several both in-house developed and commercial data management systems, this service supports management and follow-up of different kinds of information throughout the lifecycle of the LHC project: design, manufacturing, installation, commissioning data, maintenance and more. The data collection phase, carried out by specialists, is now being replaced by a phase during which data will be consulted on an extensive basis by non-experts users. In order to address this change, a Web portal for the EDMS has been developed. It brings together in one space all the aspects covered by the EDMS: project and document management, asset tracking and safety follow-up. This paper presents the EDMS Web portal, its dynamic content management and its 'one click' information search engine.

  9. 07051 Working Group Outcomes -- Programming Paradigms for the Web: Web Programming and Web Services

    OpenAIRE

    Hull, Richard; Thiemann, Peter; Wadler, Philip

    2007-01-01

    Participants in the seminar broke into groups on ``Patterns and Paradigms'' for web programming, ``Web Services,'' ``Data on the Web,'' ``Software Engineering'' and ``Security.'' Here we give the raw notes recorded during these sessions.

  10. Les ressources en charbon de l'Amérique du Sud Coal Resources in South America

    Directory of Open Access Journals (Sweden)

    Alvarado B.

    2006-10-01

    Full Text Available L'Amérique du Sud en général est mal pourvue en ressources de charbon puisqu'elle ne représente que 0,5 % des ressources mondiales. Cependant, avec la crise actuelle de l'énergie et le développement rapide de l'industrie sidérurgique locale, tous les pays possesseurs de charbon s'appliquent à faire des recherches tendant à évaluer à sa juste valeur le potentiel charbonnier comme la source d'énergie la plus traditionnelle et la matière première irremplaçable pour la production du coke métallurgique. Dans cet article, il sera question des ressources d'Argentine, du Brésil, du Chili, de Colombie, du Pérou et du Venezuela, seuls pays qui recèlent des réserves reconnues. Les principaux gisements sud-américains se rencontrent dans les sédiments gondwaniens, crétacés, et certains probablement déposés dans des milieux deltaïques et lacustres, avec majorité de charbons bitumineux et sub-bitumineux de haute volatilité. La Colombie est le pays qui a les plus grandes ressources et toutes les catégories de charbon y compris ceux cokéfiables. Du fait que les diverses évaluations nationales ne sont pas comparables, compte tenu de ce qu'elles sont basées sur des concepts géologiques et technologiques avec des niveaux de pronostics et de certitudes variables, l'auteur, pour éviter une plus grande confusion, n'exprimera pas la grandeur des ressources en chiffres absolus. Generally speaking, South America is poor in coal resources, with only 0,50% of the world's supplies. Nonetheless, with the present energy crisis and the rapid development of the local steel industry, all countries possessing coal deposits are undertaking research to evaluate accurately their potential resources of coal, the most traditional energy source and the indispensable raw material for the production of foundry coke. In this paper will be discussed the resources of those South Americon countries known to have coal reserves: Argentina, Brazil, Chile

  11. A unified architecture for biomedical search engines based on semantic web technologies.

    Science.gov (United States)

    Jalali, Vahid; Matash Borujerdi, Mohammad Reza

    2011-04-01

    There is a huge growth in the volume of published biomedical research in recent years. Many medical search engines are designed and developed to address the over growing information needs of biomedical experts and curators. Significant progress has been made in utilizing the knowledge embedded in medical ontologies and controlled vocabularies to assist these engines. However, the lack of common architecture for utilized ontologies and overall retrieval process, hampers evaluating different search engines and interoperability between them under unified conditions. In this paper, a unified architecture for medical search engines is introduced. Proposed model contains standard schemas declared in semantic web languages for ontologies and documents used by search engines. Unified models for annotation and retrieval processes are other parts of introduced architecture. A sample search engine is also designed and implemented based on the proposed architecture in this paper. The search engine is evaluated using two test collections and results are reported in terms of precision vs. recall and mean average precision for different approaches used by this search engine.

  12. Gestion de la ressource en eau et conflits d'usage dans la commune ...

    African Journals Online (AJOL)

    L'approche méthodologique utilisée repose sur la recherche documentaire et les enquêtes de terrain pour lesquelles la population cible comprend les ménages, les autorités communales, les comités de gestion des ressources en eau, les agriculteurs, les éleveurs et les pêcheurs. Au total 270 ménages ont été enquêtés.

  13. Web-Based Simulation Games for the Integration of Engineering and Business Fundamentals

    Science.gov (United States)

    Calfa, Bruno; Banholzer, William; Alger, Monty; Doherty, Michael

    2017-01-01

    This paper describes a web-based suite of simulation games that have the purpose to enhance the chemical engineering curriculum with business-oriented decisions. Two simulation cases are discussed whose teaching topics include closing material and energy balances, importance of recycle streams, price-volume relationship in a dynamic market, impact…

  14. Enhancing food engineering education with interactive web-based simulations

    Directory of Open Access Journals (Sweden)

    Alexandros Koulouris

    2015-04-01

    Full Text Available In the traditional deductive approach in teaching any engineering topic, teachers would first expose students to the derivation of the equations that govern the behavior of a physical system and then demonstrate the use of equations through a limited number of textbook examples. This methodology, however, is rarely adequate to unmask the cause-effect and quantitative relationships between the system variables that the equations embody. Web-based simulation, which is the integration of simulation and internet technologies, has the potential to enhance the learning experience by offering an interactive and easily accessible platform for quick and effortless experimentation with physical phenomena.This paper presents the design and development of a web-based platform for teaching basic food engineering phenomena to food technology students. The platform contains a variety of modules (“virtual experiments” covering the topics of mass and energy balances, fluid mechanics and heat transfer. In this paper, the design and development of three modules for mass balances and heat transfer is presented. Each webpage representing an educational module has the following features: visualization of the studied phenomenon through graphs, charts or videos, computation through a mathematical model and experimentation.  The student is allowed to edit key parameters of the phenomenon and observe the effect of these changes on the outputs. Experimentation can be done in a free or guided fashion with a set of prefabricated examples that students can run and self-test their knowledge by answering multiple-choice questions.

  15. Fumiers de bovins, une ressource à fort potentiel pour la filière de méthanisation en France ?

    Directory of Open Access Journals (Sweden)

    DEGUEURCE, Axelle

    2016-02-01

    Full Text Available En France, la méthanisation agricole représente l'un des principaux leviers d’action pour atteindre les objectifs « biogaz » dans la production d’énergies renouvelables. L'agriculture génère en effet d’abondantes ressources exploitables pour la production de biogaz par méthanisation. En croisant différentes bases de données de la statistique agricole et les pratiques d’élevage recensées sur le territoire français, les auteurs nous proposent ici d'évaluer le potentiel du gisement énergétique des effluents de bovins, et d'analyser les conditions pour mieux mobiliser cette ressource sur le territoire.

  16. Réseaux, trajectoires et ressources de mobilités

    Directory of Open Access Journals (Sweden)

    Jean-Baptiste Meyer

    2014-06-01

    Full Text Available La thèse de Sabrina Marchandise consiste à « démontrer en quoi et comment les mobilités… » participent de la création territoriale, « dans des temps courts » en soulevant trois hypothèses : celles de ressources de mobilité différenciées utilisées par les acteurs (ici étudiants, de réseaux élargis et interconnectés à travers ces mobilités provisoires, et de la territorialisation de ces réseaux. La problématique est géographique mais le cadre théorique et méthodologique convoque volontiers d’a...

  17. Spatial Visualization Learning in Engineering: Traditional Methods vs. a Web-Based Tool

    Science.gov (United States)

    Pedrosa, Carlos Melgosa; Barbero, Basilio Ramos; Miguel, Arturo Román

    2014-01-01

    This study compares an interactive learning manager for graphic engineering to develop spatial vision (ILMAGE_SV) to traditional methods. ILMAGE_SV is an asynchronous web-based learning tool that allows the manipulation of objects with a 3D viewer, self-evaluation, and continuous assessment. In addition, student learning may be monitored, which…

  18. Ressources vegetales de la foret classee de la lama et alimentation ...

    African Journals Online (AJOL)

    L'étude s'est déroulée dans la forêt classée de la Lama située entre 6°55-7°00N et 2°04-2°12 E. Elle a permis de mettre en exergue la diversité et la densité des ressources forestières alimentaires consommées par les populations des villages Holli et Fon vivant dans cette forêt. Au total, 45 espèces végétales sont ...

  19. Soil food web changes during spontaneous succession at post mining sites: a possible ecosystem engineering effect on food web organization?

    Science.gov (United States)

    Frouz, Jan; Thébault, Elisa; Pižl, Václav; Adl, Sina; Cajthaml, Tomáš; Baldrián, Petr; Háněl, Ladislav; Starý, Josef; Tajovský, Karel; Materna, Jan; Nováková, Alena; de Ruiter, Peter C

    2013-01-01

    Parameters characterizing the structure of the decomposer food web, biomass of the soil microflora (bacteria and fungi) and soil micro-, meso- and macrofauna were studied at 14 non-reclaimed 1- 41-year-old post-mining sites near the town of Sokolov (Czech Republic). These observations on the decomposer food webs were compared with knowledge of vegetation and soil microstructure development from previous studies. The amount of carbon entering the food web increased with succession age in a similar way as the total amount of C in food web biomass and the number of functional groups in the food web. Connectance did not show any significant changes with succession age, however. In early stages of the succession, the bacterial channel dominated the food web. Later on, in shrub-dominated stands, the fungal channel took over. Even later, in the forest stage, the bacterial channel prevailed again. The best predictor of fungal bacterial ratio is thickness of fermentation layer. We argue that these changes correspond with changes in topsoil microstructure driven by a combination of plant organic matter input and engineering effects of earthworms. In early stages, soil is alkaline, and a discontinuous litter layer on the soil surface promotes bacterial biomass growth, so the bacterial food web channel can dominate. Litter accumulation on the soil surface supports the development of the fungal channel. In older stages, earthworms arrive, mix litter into the mineral soil and form an organo-mineral topsoil, which is beneficial for bacteria and enhances the bacterial food web channel.

  20. Le FOS: une évaluation des ressources pédagogiques en ligne

    Directory of Open Access Journals (Sweden)

    Nuria Rodríguez

    2007-04-01

    Full Text Available Conscients de l’importance croissante que revêtent la formation en distanciel et par voie de conséquence les méthodes, outils et activités articulées autour d’un apprentissage autonome, cette étude se propose d’évaluer l’ensemble des ressources pédagogiques en ligne mises à disposition de l’internaute apprenant. Comme les contenus interactifs et multimédia concernant le FLE (français langue étrangère sont innombrables, nous nous sommes centrés sur le français de spécialité (FOS: français sur objectifs spécifiques, en particulier, le français des affaires et du tourisme. Notre objectif étant de compléter un travail précédent portant sur l’évaluation des sites FOS, de nouveaux critères ont été considérés pour une utilisation optimale des ressources en jeu. Il s’avère qu’une bonne combinaison des outils pédagogiques disponibles sur Internet pourrait être une bonne option pour les apprenants du français des affaires, alors que les outils de formation interactive concernant le français du tourisme demeurent insuffisants pour garantir un apprentissage adéquat de cette langue spécifique.

  1. REPTREE CLASSIFIER FOR IDENTIFYING LINK SPAM IN WEB SEARCH ENGINES

    Directory of Open Access Journals (Sweden)

    S.K. Jayanthi

    2013-01-01

    Full Text Available Search Engines are used for retrieving the information from the web. Most of the times, the importance is laid on top 10 results sometimes it may shrink as top 5, because of the time constraint and reliability on the search engines. Users believe that top 10 or 5 of total results are more relevant. Here comes the problem of spamdexing. It is a method to deceive the search result quality. Falsified metrics such as inserting enormous amount of keywords or links in website may take that website to the top 10 or 5 positions. This paper proposes a classifier based on the Reptree (Regression tree representative. As an initial step Link-based features such as neighbors, pagerank, truncated pagerank, trustrank and assortativity related attributes are inferred. Based on this features, tree is constructed. The tree uses the feature inference to differentiate spam sites from legitimate sites. WEBSPAM-UK-2007 dataset is taken as a base. It is preprocessed and converted into five datasets FEATA, FEATB, FEATC, FEATD and FEATE. Only link based features are taken for experiments. This paper focus on link spam alone. Finally a representative tree is created which will more precisely classify the web spam entries. Results are given. Regression tree classification seems to perform well as shown through experiments.

  2. Photonics and Web Engineering: WILGA 2009

    CERN Document Server

    Romaniuk, Ryszard

    2009-01-01

    The paper is a digest of work presented during a cyclic Ph.D. student symposium on Photonics and Web Engineering WILGA 2009. The subject of WILGA are Photonics Applications in Astronomy, Communications, Industry and High-Energy Physics Experiments. WILGA is sponsored by EuCARD Project. Symposium is organized by ISE PW in cooperation with professional organizations IEEE, SPIE, PSP and KEiT PAN. There are presented mainly Ph.D. and M.Sc. theses as well as achievements of young researchers. These papers, presented in such a big number, more than 250 in some years, are in certain sense a good digest of the condition of academic research capabilities in this branch of science and technology. The undertaken research subjects for Ph.D. theses in electronics is determined by the interest and research capacity (financial, laboratory and intellectual) of the young researchers and their tutors. Basically, the condition of academic electronics research depends on financing coming from applications areas. During Wilga 200...

  3. Introduction to Chemical Engineering Reactor Analysis: A Web-Based Reactor Design Game

    Science.gov (United States)

    Orbey, Nese; Clay, Molly; Russell, T.W. Fraser

    2014-01-01

    An approach to explain chemical engineering through a Web-based interactive game design was developed and used with college freshman and junior/senior high school students. The goal of this approach was to demonstrate how to model a lab-scale experiment, and use the results to design and operate a chemical reactor. The game incorporates both…

  4. A Web-based modeling tool for the SEMAT Essence theory of software engineering

    Directory of Open Access Journals (Sweden)

    Daniel Graziotin

    2013-09-01

    Full Text Available As opposed to more mature subjects, software engineering lacks general theories that establish its foundations as a discipline. The Essence Theory of software engineering (Essence has been proposed by the Software Engineering Methods and Theory (SEMAT initiative. The goal of Essence is to develop a theoretically sound basis for software engineering practice and its wide adoption. However, Essence is far from reaching academic- and industry-wide adoption. The reasons for this include a struggle to foresee its utilization potential and a lack of tools for implementation. SEMAT Accelerator (SematAcc is a Web-positioning tool for a software engineering endeavor, which implements the SEMAT’s Essence kernel. SematAcc permits the use of Essence, thus helping to understand it. The tool enables the teaching, adoption, and research of Essence in controlled experiments and case studies.

  5. EuroGOV: Engineering a Multilingual Web Corpus

    NARCIS (Netherlands)

    Sigurbjörnsson, B.; Kamps, J.; de Rijke, M.

    2005-01-01

    EuroGOV is a multilingual web corpus that was created to serve as the document collection for WebCLEF, the CLEF 2005 web retrieval task. EuroGOV is a collection of web pages crawled from the European Union portal, European Union member state governmental web sites, and Russian government web sites.

  6. L'eau en Afrique, les paradoxes d'une ressource très convoitée

    International Development Research Centre (IDRC) Digital Library (Canada)

    développement, lie la situation de sous développement du continent africain par rapport à la mauvaise répartition de cette ressource hydrique sur le continent. 4. Karen Franken (sous la direction de) «L'irrigation en Afrique en chiffre. », Enquêtes AQUASTAT, FAO 2005,. 5. Analyse Multidisciplinaire de la mousson africaine.

  7. The fraying web of life and our future engineers

    Science.gov (United States)

    Splitt, Frank G.

    2004-07-01

    Evidence abounds that we are reaching the carrying capacity of the earth -- engaging in deficit spending. The amount of crops, animals, and other biomatter we extract from the earth each year exceeds wth the earth can replace by an estimated 20%. Additionally, signs of climate change are precursors of things to come. Global industrialization and the new technologies of the 20th century have helped to stretch the capacities of our finite natural system to precarious levels. Taken together, this evidence reflects a fraying web of life. Sustainable development and natural capitalism work to reverse these trends, however, we are often still wedded to the notion that environmental conservation and economic development are the 'players' in a zero-sum game. Engineering and its technological derivatives can also help remedy the problem. The well being of future generations will depend to a large extent on how we educate our future engineers. These engineers will be a new breed -- developing and using sustainable technology, benign manufacturing processes and an expanded array of environmental assessment tools that will simultaneously support and maintain healthy economies and a healthy environment. The importance of environment and sustainable development cosiderations, the need for their widespread inclusion in engineering education, the impediments to change, and the important role played by ABET will be presented.

  8. Ressources à l'intention des bénéficiaires de subventions du CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Nous vous offrons des ressources et appuyons votre besoin d'apprendre, de vous épanouir et de réussir dans votre travail de chercheur. Notre équipe de Soutien à la recherche met au point des outils et aide les bénéficiaires. Vous devez être chercheur subventionné par le CRDI ou employé de ce dernier pour accéder à ...

  9. The Evolution of Web Searching.

    Science.gov (United States)

    Green, David

    2000-01-01

    Explores the interrelation between Web publishing and information retrieval technologies and lists new approaches to Web indexing and searching. Highlights include Web directories; search engines; portalisation; Internet service providers; browser providers; meta search engines; popularity based analysis; natural language searching; links-based…

  10. State-of-the-art WEB -technologies and ecological safety of nuclear power engineering facilities

    International Nuclear Information System (INIS)

    Batij, V.G.; Batij, E.V.; Rud'ko, V.M.; Kotlyarov, V.T.

    2004-01-01

    Prospects of web-technologies using in the field of improvement radiation safety level of nuclear power engineering facilities is seen. It is shown that application of such technologies will enable entirely using the data of all information systems of radiation control

  11. Development of Web-Based Learning Environment Model to Enhance Cognitive Skills for Undergraduate Students in the Field of Electrical Engineering

    Science.gov (United States)

    Lakonpol, Thongmee; Ruangsuwan, Chaiyot; Terdtoon, Pradit

    2015-01-01

    This research aimed to develop a web-based learning environment model for enhancing cognitive skills of undergraduate students in the field of electrical engineering. The research is divided into 4 phases: 1) investigating the current status and requirements of web-based learning environment models. 2) developing a web-based learning environment…

  12. A Web Centric Architecture for Deploying Multi-Disciplinary Engineering Design Processes

    Science.gov (United States)

    Woyak, Scott; Kim, Hongman; Mullins, James; Sobieszczanski-Sobieski, Jaroslaw

    2004-01-01

    There are continuous needs for engineering organizations to improve their design process. Current state of the art techniques use computational simulations to predict design performance, and optimize it through advanced design methods. These tools have been used mostly by individual engineers. This paper presents an architecture for achieving results at an organization level beyond individual level. The next set of gains in process improvement will come from improving the effective use of computers and software within a whole organization, not just for an individual. The architecture takes advantage of state of the art capabilities to produce a Web based system to carry engineering design into the future. To illustrate deployment of the architecture, a case study for implementing advanced multidisciplinary design optimization processes such as Bi-Level Integrated System Synthesis is discussed. Another example for rolling-out a design process for Design for Six Sigma is also described. Each example explains how an organization can effectively infuse engineering practice with new design methods and retain the knowledge over time.

  13. 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

  14. Engineering semantic web information systems in Hera

    NARCIS (Netherlands)

    Vdovják, R.; Frasincar, F.; Houben, G.J.P.M.; Barna, P.

    2003-01-01

    The success of the World Wide Web has caused the concept of information system to change. Web Information Systems (WIS) use from the Web its paradigm and technologies in order to retrieve information from sources on the Web, and to present the information in terms of a Web or hypermedia

  15. Engineers and the Web: An analysis of real life gaps in information usage

    NARCIS (Netherlands)

    Kraaijenbrink, Jeroen

    2007-01-01

    Engineers face a wide range of gaps when trying to identify, acquire, and utilize information from the Web. To be able to avoid creating such gaps, it is essential to understand them in detail. This paper reports the results of a study of the real life gaps in information usage processes of 17

  16. A web-based online collaboration platform for formulating engineering design projects

    Science.gov (United States)

    Varikuti, Sainath

    Effective communication and collaboration among students, faculty and industrial sponsors play a vital role while formulating and solving engineering design projects. With the advent in the web technology, online platforms and systems have been proposed to facilitate interactions and collaboration among different stakeholders in the context of senior design projects. However, there are noticeable gaps in the literature with respect to understanding the effects of online collaboration platforms for formulating engineering design projects. Most of the existing literature is focused on exploring the utility of online platforms on activities after the problem is defined and teams are formed. Also, there is a lack of mechanisms and tools to guide the project formation phase in senior design projects, which makes it challenging for students and faculty to collaboratively develop and refine project ideas and to establish appropriate teams. In this thesis a web-based online collaboration platform is designed and implemented to share, discuss and obtain feedback on project ideas and to facilitate collaboration among students and faculty prior to the start of the semester. The goal of this thesis is to understand the impact of an online collaboration platform for formulating engineering design projects, and how a web-based online collaboration platform affects the amount of interactions among stakeholders during the early phases of design process. A survey measuring the amount of interactions among students and faculty is administered. Initial findings show a marked improvement in the students' ability to share project ideas and form teams with other students and faculty. Students found the online platform simple to use. The suggestions for improving the tool generally included features that were not necessarily design specific, indicating that the underlying concept of this collaborative platform provides a strong basis and can be extended for future online platforms

  17. Electronic ignition device for internal combustion engines. Elektronische Zuendvorrichtung fuer Brennkraftmaschinen

    Energy Technology Data Exchange (ETDEWEB)

    Erhard, W

    1983-07-14

    The purpose of the invention is to create an electronic ignition device for internal combustion engines, so that the exact setting of a required ignition timing can be done without troublesome balancing of the circuit and without temperature compensation processes. According to the invention, in order to solve this problem, the ignition device is characterized by an auxiliary circuit, with an auxiliary winding magnetically coupled to the ignition coil, a capacitor and a diode, which is connected in parallel with the control section of the control component. The auxiliary winding charges the capacitor up via the diode, as long as the induction and therefore the voltage in the auxiliary winding are increasing. After exceeding the maximum voltage, this is maintained at the capacitor while the voltage in the auxiliary winding decreases. If the difference reaches the threshold voltage of the control component, in particular of a thyristor, this is switched on and blocks the switching transistor. Due to this circuit, the ignition timing is very close behind the timing of the greatest possible energy input into the primary coil.

  18. Bioprocess-Engineering Education with Web Technology

    NARCIS (Netherlands)

    Sessink, O.

    2006-01-01

    Development of learning material that is distributed through and accessible via the World Wide Web. Various options from web technology are exploited to improve the quality and efficiency of learning material.

  19. Semantic similarity measure in biomedical domain leverage web search engine.

    Science.gov (United States)

    Chen, Chi-Huang; Hsieh, Sheau-Ling; Weng, Yung-Ching; Chang, Wen-Yung; Lai, Feipei

    2010-01-01

    Semantic similarity measure plays an essential role in Information Retrieval and Natural Language Processing. In this paper we propose a page-count-based semantic similarity measure and apply it in biomedical domains. Previous researches in semantic web related applications have deployed various semantic similarity measures. Despite the usefulness of the measurements in those applications, measuring semantic similarity between two terms remains a challenge task. The proposed method exploits page counts returned by the Web Search Engine. We define various similarity scores for two given terms P and Q, using the page counts for querying P, Q and P AND Q. Moreover, we propose a novel approach to compute semantic similarity using lexico-syntactic patterns with page counts. These different similarity scores are integrated adapting support vector machines, to leverage the robustness of semantic similarity measures. Experimental results on two datasets achieve correlation coefficients of 0.798 on the dataset provided by A. Hliaoutakis, 0.705 on the dataset provide by T. Pedersen with physician scores and 0.496 on the dataset provided by T. Pedersen et al. with expert scores.

  20. Personalizing Web Search based on User Profile

    OpenAIRE

    Utage, Sharyu; Ahire, Vijaya

    2016-01-01

    Web Search engine is most widely used for information retrieval from World Wide Web. These Web Search engines help user to find most useful information. When different users Searches for same information, search engine provide same result without understanding who is submitted that query. Personalized web search it is search technique for proving useful result. This paper models preference of users as hierarchical user profiles. a framework is proposed called UPS. It generalizes profile and m...

  1. Integration of Web mining and web crawler: Relevance and State of Art

    OpenAIRE

    Subhendu kumar pani; Deepak Mohapatra,; Bikram Keshari Ratha

    2010-01-01

    This study presents the role of web crawler in web mining environment. As the growth of the World Wide Web exceeded all expectations,the research on Web mining is growing more and more.web mining research topic which combines two of the activated research areas: Data Mining and World Wide Web .So, the World Wide Web is a very advanced area for data mining research. Search engines that are based on web crawling framework also used in web mining to find theinteracted web pages. This paper discu...

  2. Web Project Management

    OpenAIRE

    Suralkar, Sunita; Joshi, Nilambari; Meshram, B B

    2013-01-01

    This paper describes about the need for Web project management, fundamentals of project management for web projects: what it is, why projects go wrong, and what's different about web projects. We also discuss Cost Estimation Techniques based on Size Metrics. Though Web project development is similar to traditional software development applications, the special characteristics of Web Application development requires adaption of many software engineering approaches or even development of comple...

  3. Developing as new search engine and browser for libraries to search and organize the World Wide Web library resources

    OpenAIRE

    Sreenivasulu, V.

    2000-01-01

    Internet Granthalaya urges world wide advocates and targets at the task of creating a new search engine and dedicated browseer. Internet Granthalaya may be the ultimate search engine exclusively dedicated for every library use to search and organize the world wide web libary resources

  4. Exploring the academic invisible web

    OpenAIRE

    Lewandowski, Dirk; Mayr, Philipp

    2006-01-01

    Purpose: To provide a critical review of Bergman’s 2001 study on the Deep Web. In addition, we bring a new concept into the discussion, the Academic Invisible Web (AIW). We define the Academic Invisible Web as consisting of all databases and collections relevant to academia but not searchable by the general-purpose internet search engines. Indexing this part of the Invisible Web is central to scientific search engines. We provide an overview of approaches followed thus far. Design/methodol...

  5. Hybridation de la ressource humaine dans les associations : déterminants et effets.

    OpenAIRE

    Gontier , Patricia; Dansac , Christophe; Vachée , Cécile

    2014-01-01

    International audience; À l’image de la multiplicité des rôles que peuvent tenir les associations et autres organisations non orientées vers le profit dans nos sociétés, les ressources humaines impliquées dans les associations ou autres organisations non orientées vers le profit sont multiples. Dans leurs motivations, leurs compétences, et leurs parcours, les individus qui contribuent à ces organisations sont très différents. Parmi les bénévoles, on peut ainsi dissocier ceux qui administrent ...

  6. Electronic Grey Literature in Accelerator Science and Its Allied Subjects : Selected Web Resources for Scientists and Engineers

    CERN Document Server

    Rajendiran, P

    2006-01-01

    Grey literature Web resources in the field of accelerator science and its allied subjects are collected for the scientists and engineers of RRCAT (Raja Ramanna Centre for Advanced Technology). For definition purposes the different types of grey literature are described. The Web resources collected and compiled in this article (with an overview and link for each) specifically focus on technical reports, preprints or e-prints, which meet the main information needs of RRCAT users.

  7. Characterizing interdisciplinarity of researchers and research topics using web search engines.

    Science.gov (United States)

    Sayama, Hiroki; Akaishi, Jin

    2012-01-01

    Researchers' networks have been subject to active modeling and analysis. Earlier literature mostly focused on citation or co-authorship networks reconstructed from annotated scientific publication databases, which have several limitations. Recently, general-purpose web search engines have also been utilized to collect information about social networks. Here we reconstructed, using web search engines, a network representing the relatedness of researchers to their peers as well as to various research topics. Relatedness between researchers and research topics was characterized by visibility boost-increase of a researcher's visibility by focusing on a particular topic. It was observed that researchers who had high visibility boosts by the same research topic tended to be close to each other in their network. We calculated correlations between visibility boosts by research topics and researchers' interdisciplinarity at the individual level (diversity of topics related to the researcher) and at the social level (his/her centrality in the researchers' network). We found that visibility boosts by certain research topics were positively correlated with researchers' individual-level interdisciplinarity despite their negative correlations with the general popularity of researchers. It was also found that visibility boosts by network-related topics had positive correlations with researchers' social-level interdisciplinarity. Research topics' correlations with researchers' individual- and social-level interdisciplinarities were found to be nearly independent from each other. These findings suggest that the notion of "interdisciplinarity" of a researcher should be understood as a multi-dimensional concept that should be evaluated using multiple assessment means.

  8. Collaborative Science Using Web Services and the SciFlo Grid Dataflow Engine

    Science.gov (United States)

    Wilson, B. D.; Manipon, G.; Xing, Z.; Yunck, T.

    2006-12-01

    The General Earth Science Investigation Suite (GENESIS) project is a NASA-sponsored partnership between the Jet Propulsion Laboratory, academia, and NASA data centers to develop a new suite of Web Services tools to facilitate multi-sensor investigations in Earth System Science. The goal of GENESIS is to enable large-scale, multi-instrument atmospheric science using combined datasets from the AIRS, MODIS, MISR, and GPS sensors. Investigations include cross-comparison of spaceborne climate sensors, cloud spectral analysis, study of upper troposphere-stratosphere water transport, study of the aerosol indirect cloud effect, and global climate model validation. The challenges are to bring together very large datasets, reformat and understand the individual instrument retrievals, co-register or re-grid the retrieved physical parameters, perform computationally-intensive data fusion and data mining operations, and accumulate complex statistics over months to years of data. To meet these challenges, we have developed a Grid computing and dataflow framework, named SciFlo, in which we are deploying a set of versatile and reusable operators for data access, subsetting, registration, mining, fusion, compression, and advanced statistical analysis. SciFlo leverages remote Web Services, called via Simple Object Access Protocol (SOAP) or REST (one-line) URLs, and the Grid Computing standards (WS-* &Globus Alliance toolkits), and enables scientists to do multi-instrument Earth Science by assembling reusable Web Services and native executables into a distributed computing flow (tree of operators). The SciFlo client &server engines optimize the execution of such distributed data flows and allow the user to transparently find and use datasets and operators without worrying about the actual location of the Grid resources. In particular, SciFlo exploits the wealth of datasets accessible by OpenGIS Consortium (OGC) Web Mapping Servers & Web Coverage Servers (WMS/WCS), and by Open Data

  9. Search Engine Optimization for Flash Best Practices for Using Flash on the Web

    CERN Document Server

    Perkins, Todd

    2009-01-01

    Search Engine Optimization for Flash dispels the myth that Flash-based websites won't show up in a web search by demonstrating exactly what you can do to make your site fully searchable -- no matter how much Flash it contains. You'll learn best practices for using HTML, CSS and JavaScript, as well as SWFObject, for building sites with Flash that will stand tall in search rankings.

  10. Applying Web Usage Mining for Personalizing Hyperlinks in Web-Based Adaptive Educational Systems

    Science.gov (United States)

    Romero, Cristobal; Ventura, Sebastian; Zafra, Amelia; de Bra, Paul

    2009-01-01

    Nowadays, the application of Web mining techniques in e-learning and Web-based adaptive educational systems is increasing exponentially. In this paper, we propose an advanced architecture for a personalization system to facilitate Web mining. A specific Web mining tool is developed and a recommender engine is integrated into the AHA! system in…

  11. Assessment and Comparison of Search capabilities of Web-based Meta-Search Engines: A Checklist Approach

    Directory of Open Access Journals (Sweden)

    Alireza Isfandiyari Moghadam

    2010-03-01

    Full Text Available   The present investigation concerns evaluation, comparison and analysis of search options existing within web-based meta-search engines. 64 meta-search engines were identified. 19 meta-search engines that were free, accessible and compatible with the objectives of the present study were selected. An author’s constructed check list was used for data collection. Findings indicated that all meta-search engines studied used the AND operator, phrase search, number of results displayed setting, previous search query storage and help tutorials. Nevertheless, none of them demonstrated any search options for hypertext searching and displaying the size of the pages searched. 94.7% support features such as truncation, keywords in title and URL search and text summary display. The checklist used in the study could serve as a model for investigating search options in search engines, digital libraries and other internet search tools.

  12. Reconsidering the Rhizome: A Textual Analysis of Web Search Engines as Gatekeepers of the Internet

    Science.gov (United States)

    Hess, A.

    Critical theorists have often drawn from Deleuze and Guattari's notion of the rhizome when discussing the potential of the Internet. While the Internet may structurally appear as a rhizome, its day-to-day usage by millions via search engines precludes experiencing the random interconnectedness and potential democratizing function. Through a textual analysis of four search engines, I argue that Web searching has grown hierarchies, or "trees," that organize data in tracts of knowledge and place users in marketing niches rather than assist in the development of new knowledge.

  13. Developing Creativity and Problem-Solving Skills of Engineering Students: A Comparison of Web- and Pen-and-Paper-Based Approaches

    Science.gov (United States)

    Valentine, Andrew; Belski, Iouri; Hamilton, Margaret

    2017-01-01

    Problem-solving is a key engineering skill, yet is an area in which engineering graduates underperform. This paper investigates the potential of using web-based tools to teach students problem-solving techniques without the need to make use of class time. An idea generation experiment involving 90 students was designed. Students were surveyed…

  14. A Taxonomic Search Engine: federating taxonomic databases using web services.

    Science.gov (United States)

    Page, Roderic D M

    2005-03-09

    The taxonomic name of an organism is a key link between different databases that store information on that organism. However, in the absence of a single, comprehensive database of organism names, individual databases lack an easy means of checking the correctness of a name. Furthermore, the same organism may have more than one name, and the same name may apply to more than one organism. The Taxonomic Search Engine (TSE) is a web application written in PHP that queries multiple taxonomic databases (ITIS, Index Fungorum, IPNI, NCBI, and uBIO) and summarises the results in a consistent format. It supports "drill-down" queries to retrieve a specific record. The TSE can optionally suggest alternative spellings the user can try. It also acts as a Life Science Identifier (LSID) authority for the source taxonomic databases, providing globally unique identifiers (and associated metadata) for each name. The Taxonomic Search Engine is available at http://darwin.zoology.gla.ac.uk/~rpage/portal/ and provides a simple demonstration of the potential of the federated approach to providing access to taxonomic names.

  15. Ressources pétrolières pour le XXe siecle : quel avenir ? Oil Ressources for the 21st Century: Constraints and Outlook

    Directory of Open Access Journals (Sweden)

    Alazard N.

    2006-11-01

    Full Text Available Les réserves prouvées d'hydrocarbures liquides sont aujourd'hui évaluées, suivant les sources, entre 950 et 1 000 milliards de barils. Leur durée de vie, au rythme actuel de la production mondiale, est d'environ 41 à 45 ans, soit bien supérieure à celles qui étaient couramment données en 1970 et 1980. Toutefois, cette abondance des ressources ne garantit pas obligatoirement la sécurité des approvisionnements pétroliers pour tous les pays. Il importe de souligner que les réserves pétrolières sont géographiquement inégalement réparties et que réserves et productions sont actuellement le fait des champs géants (champs ayant plus de 500 millions de barils de réserves initiales. Si l'approvisionnement pétrolier semble assuré pour les trente à quarante années à venir, quelles sont les perspectives au-delà de 2020-2030 ? L'augmentation des réserves prouvées au cours des dix à vingt années qui viennent de s'écouler n'est qu'apparente. Cet accroissement, après 1986, est essentiellement dû à des révisions et à des extensions plutôt qu'à de nouvelles découvertes. L'article, présenté ici, s'efforce d'inventorier et d'évaluer quelles pourraient être les nouvelles sources de pétrole : bruts conventionnels (brut récupérable compte tenu d'un prix au baril de l'ordre de 20 US$ et d'un taux de récupération voisin de 30 % restant à découvrir, ressources en huile issues d'une amélioration du taux de récupération, ressources résultant de l'exploitation de zones nouvelles (l'offshore profond, bruts de types non conventionnels tels que bruts extra-lourds, sables asphaltiques, huiles de schiste, et hydrocarbures liquides obtenus grâce aux méthodes de récupération assistée par voie chimique. The assessment of proven reserves of liquid hydrocarbons currently varies between 950 and 1 000 billion barrels, depending on the sources. The foreseeable lifetime, at the present rate of world production, is about 41 to

  16. Les folksonomies comme support émergent de navigation sociale et de structuration des données du Web

    OpenAIRE

    Crépel , Maxime

    2008-01-01

    En nous basant sur les premiers travaux venant alimenter le débat soulevé par le modèle de classification des folksonomies, ainsi que de résultats d’enquêtes réalisées à partir d’entretiens auprès d’utilisateurs du site Flickr, il s’agit d’analyser les enjeux de ce nouveau mode d’indexation des informations comme modèle controversé de structuration des ressources du web et de comprendre les implications de son intégration pour la recherche d’information et la navigation sur internet....

  17. 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

  18. Critical Reading of the Web

    Science.gov (United States)

    Griffin, Teresa; Cohen, Deb

    2012-01-01

    The ubiquity and familiarity of the world wide web means that students regularly turn to it as a source of information. In doing so, they "are said to rely heavily on simple search engines, such as Google to find what they want." Researchers have also investigated how students use search engines, concluding that "the young web users tended to…

  19. Digging Deeper: The Deep Web.

    Science.gov (United States)

    Turner, Laura

    2001-01-01

    Focuses on the Deep Web, defined as Web content in searchable databases of the type that can be found only by direct query. Discusses the problems of indexing; inability to find information not indexed in the search engine's database; and metasearch engines. Describes 10 sites created to access online databases or directly search them. Lists ways…

  20. Introducing Model-Based System Engineering Transforming System Engineering through Model-Based Systems Engineering

    Science.gov (United States)

    2014-03-31

    Web  Presentation...Software  .....................................................  20   Figure  6.  Published   Web  Page  from  Data  Collection...the  term  Model  Based  Engineering  (MBE),  Model  Driven  Engineering  ( MDE ),  or  Model-­‐Based  Systems  

  1. Myanmar Language Search Engine

    OpenAIRE

    Pann Yu Mon; Yoshiki Mikami

    2011-01-01

    With the enormous growth of the World Wide Web, search engines play a critical role in retrieving information from the borderless Web. Although many search engines are available for the major languages, but they are not much proficient for the less computerized languages including Myanmar. The main reason is that those search engines are not considering the specific features of those languages. A search engine which capable of searching the Web documents written in those languages is highly n...

  2. Intelligent Agent Based Semantic Web in Cloud Computing Environment

    OpenAIRE

    Mukhopadhyay, Debajyoti; Sharma, Manoj; Joshi, Gajanan; Pagare, Trupti; Palwe, Adarsha

    2013-01-01

    Considering today's web scenario, there is a need of effective and meaningful search over the web which is provided by Semantic Web. Existing search engines are keyword based. They are vulnerable in answering intelligent queries from the user due to the dependence of their results on information available in web pages. While semantic search engines provides efficient and relevant results as the semantic web is an extension of the current web in which information is given well defined meaning....

  3. MODEST: a web-based design tool for oligonucleotide-mediated genome engineering and recombineering

    DEFF Research Database (Denmark)

    Bonde, Mads; Klausen, Michael Schantz; Anderson, Mads Valdemar

    2014-01-01

    Recombineering and multiplex automated genome engineering (MAGE) offer the possibility to rapidly modify multiple genomic or plasmid sites at high efficiencies. This enables efficient creation of genetic variants including both single mutants with specifically targeted modifications as well......, which confers the corresponding genetic change, is performed manually. To address these challenges, we have developed the MAGE Oligo Design Tool (MODEST). This web-based tool allows designing of MAGE oligos for (i) tuning translation rates by modifying the ribosomal binding site, (ii) generating...

  4. A Taxonomic Search Engine: Federating taxonomic databases using web services

    Directory of Open Access Journals (Sweden)

    Page Roderic DM

    2005-03-01

    Full Text Available Abstract Background The taxonomic name of an organism is a key link between different databases that store information on that organism. However, in the absence of a single, comprehensive database of organism names, individual databases lack an easy means of checking the correctness of a name. Furthermore, the same organism may have more than one name, and the same name may apply to more than one organism. Results The Taxonomic Search Engine (TSE is a web application written in PHP that queries multiple taxonomic databases (ITIS, Index Fungorum, IPNI, NCBI, and uBIO and summarises the results in a consistent format. It supports "drill-down" queries to retrieve a specific record. The TSE can optionally suggest alternative spellings the user can try. It also acts as a Life Science Identifier (LSID authority for the source taxonomic databases, providing globally unique identifiers (and associated metadata for each name. Conclusion The Taxonomic Search Engine is available at http://darwin.zoology.gla.ac.uk/~rpage/portal/ and provides a simple demonstration of the potential of the federated approach to providing access to taxonomic names.

  5. Dynamique des ressources naturelles dans le Parc national de Manda: Cartographie et analyse pour le Développement durable

    Science.gov (United States)

    Ballah Solkam, Rosalie; Médard, Ndoutorlengar

    2018-05-01

    Au Tchad, le réseau d'aires protégées couvre près de 10,2% de la surface du pays et reste globalement représentatif de toute la diversité des écosystèmes de la région. Cependant, ce réseau n'est pas constitué d'écosystèmes intacts car de nombreuses altérations y ont été apportés (certaines espèces sont déjà au seuil critique d'extinction (Addax, gazelle dama, lamantin), voire ont disparu (Rhinocéros noir et blanc, Oryx)) surtout dans les parcs nationaux. Ce qui nous amène à nous interroger sur la dynamique des ressources naturelles et le degré de conservation du parc national de Manda? Une évaluation de la diversité biologique et des ressources hydrographiques de 1951 à 1999 sur la base de la bibliographie existante, de la carte topographique de 1956, des images satellitaires Landsat 5 et 7 TM et ETM+ de 2 périodes (1986, 1999), complétée par des interviews semi-structurés et des transects sur le terrain, permettra de mieux appréhender la dynamique des ressources et les actions de conservation de la biodiversité réalisées à cet effet. Les résultats montrent une dynamique progressive de la faune de 1951 à 1970, puis une dynamique régressive de 1970 à 1989. Après cette tumultueuse période, un repeuplement du parc s'opère de 1989 à 2002. Par contre, la flore est relativement bien conservée avec quelques cours d'eau, des mares, champs et plantations. Et cela grâce aux multiples projets de conservation de la biodiversité. La promotion de l'écotourisme serait une alternative au développement durable de ce parc.

  6. Philosophical engineering toward a philosophy of the web

    CERN Document Server

    Halpin, Harry

    2013-01-01

    This is the first interdisciplinary exploration of the philosophical foundations of the Web, a new area of inquiry that has important implications across a range of domains. Contains twelve essays that bridge the fields of philosophy, cognitive science, and phenomenologyTackles questions such as the impact of Google on intelligence and epistemology, the philosophical status of digital objects, ethics on the Web, semantic and ontological changes caused by the Web, and the potential of the Web to serve as a genuine cognitive extensionBrings together insightful new scholarship from well-known an

  7. Promoting Your Web Site.

    Science.gov (United States)

    Raeder, Aggi

    1997-01-01

    Discussion of ways to promote sites on the World Wide Web focuses on how search engines work and how they retrieve and identify sites. Appropriate Web links for submitting new sites and for Internet marketing are included. (LRW)

  8. 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

  9. Semantic Web and Model-Driven Engineering

    CERN Document Server

    Parreiras, Fernando S

    2012-01-01

    The next enterprise computing era will rely on the synergy between both technologies: semantic web and model-driven software development (MDSD). The semantic web organizes system knowledge in conceptual domains according to its meaning. It addresses various enterprise computing needs by identifying, abstracting and rationalizing commonalities, and checking for inconsistencies across system specifications. On the other side, model-driven software development is closing the gap among business requirements, designs and executables by using domain-specific languages with custom-built syntax and se

  10. Development of Content Management System-based Web Applications

    OpenAIRE

    Souer, J.

    2012-01-01

    Web engineering is the application of systematic and quantifiable approaches (concepts, methods, techniques, tools) to cost-effective requirements analysis, design, implementation, testing, operation, and maintenance of high quality web applications. Over the past years, Content Management Systems (CMS) have emerged as an important foundation for the web engineering process. CMS can be defined as a tool for the creation, editing and management of web information in an integral way. A CMS appe...

  11. Acquis et défis de la gestion participative des ressources forestières : Cas du Parc National d’Ifrane

    Directory of Open Access Journals (Sweden)

    Larbi Aziz

    2014-03-01

    Full Text Available Les ressources forestières constituent un capital naturel pour l’approvisionnement des populations locales, en bois, en plantes aromatiques et médicinales et en parcours pour le pâturage. Ces multiples usages ont conduit ces populations à mettre en place une gestion communautaire et très ancienne de ces ressources. Depuis 2002, l’administration des Eaux et Forêts a mis en place une politique forestière basée sur une stratégie de gestion participative. Nous avons étudié les formes de gestion communautaire et par l’administration des ressources forestières dans quatre communes rurales du Parc National d’Ifrane. L’administration organise une mise en défens, fondée sur l’implication et la responsabilisation des populations usagères, organisée en associations sylvo-pastorales ou en coopératives forestières, à travers une incitation financière sous forme de compensation. Ce mécanisme a permis d’obtenir un certain nombre d’acquis : conscientisation des populations vis-à-vis de la mise en défens, investissement des sommes de la compensation dans des projets de développement local, etc. Cependant, ce mécanisme présente certaines fragilités, notamment un risque de non durabilité des mises en défens (du fait que celles-ci ne sont financées que par le budget de l’Etat et un contrôle social plus faible dans les nouvelles associations qui n’ont pas la même légitimité pour prendre des décisions au nom du collectif que les anciennes jmaa.

  12. Russian Arctic Petroleum Resources Ressources pétrolières de l’Arctique russe

    Directory of Open Access Journals (Sweden)

    Zolotukhin A.

    2011-12-01

    should be in place, like national standards and guidelines for Arctic resources development, stable, transparent and predictable law as a necessary precondition for massive investments in exploration and production and, not least, active involvement of foreign companies in development of Arctic resources that could bring along with investments an indispensible competence and experience, available technology and Health, Safety and Environment (HSE principles. Development of oil and gas fields in the arctic seas located few hundreds miles from shore is according to expert opinion the most challenging project in the world. Without international cooperation, coordination of all activities and use of modern and proven technologies for production of hydrocarbons, their transport, efficient safety and environmental protection tools the realization of such a project would be questionable. Le plateau continental arctique est considéré comme la zone comportant le potentiel inexploré le plus important tant en termes d’huile et de gaz qu’en ressources en hydrocarbures non conventionnels tels que les hydrates de gaz. En dépit d’une vision courante selon laquelle l’Arctique possède des ressources abondantes en hydrocarbures, des débats se poursuivent sur le potentiel énergétique de cette région. Les lignes directrices de telles discussions reposent sur la géopolitique, les questions environnementales, l’évaluation et la délimitation des ressources arctiques, la technologie disponible pour le succès de leur exploitation et les perspectives d’évolution de la demande en énergie. La partie russe est reconnue comme étant la plus importante concernant les ressources en huile et gaz des nations arctiques. Toutefois, le manque d’informations et de données géologiques disponibles engendre une incertitude sur le rôle futur de l’Arctique russe comme principal fournisseur d’énergie dans la seconde partie du XXIe siècle. Une incertitude supplémentaire repose

  13. Incorporating the surfing behavior of web users into PageRank

    OpenAIRE

    Ashyralyyev, Shatlyk

    2013-01-01

    Ankara : The Department of Computer Engineering and the Graduate School of Engineering and Science of Bilkent University, 2013. Thesis (Master's) -- Bilkent University, 2013. Includes bibliographical references leaves 68-73 One of the most crucial factors that determines the effectiveness of a large-scale commercial web search engine is the ranking (i.e., order) in which web search results are presented to the end user. In modern web search engines, the skeleton for the rank...

  14. Characteristics of scientific web publications

    DEFF Research Database (Denmark)

    Thorlund Jepsen, Erik; Seiden, Piet; Ingwersen, Peter Emil Rerup

    2004-01-01

    were generated based on specifically selected domain topics that are searched for in three publicly accessible search engines (Google, AllTheWeb, and AltaVista). A sample of the retrieved hits was analyzed with regard to how various publication attributes correlated with the scientific quality...... of the content and whether this information could be employed to harvest, filter, and rank Web publications. The attributes analyzed were inlinks, outlinks, bibliographic references, file format, language, search engine overlap, structural position (according to site structure), and the occurrence of various...... types of metadata. As could be expected, the ranked output differs between the three search engines. Apparently, this is caused by differences in ranking algorithms rather than the databases themselves. In fact, because scientific Web content in this subject domain receives few inlinks, both Alta...

  15. The poor quality of information about laparoscopy on the World Wide Web as indexed by popular search engines.

    Science.gov (United States)

    Allen, J W; Finch, R J; Coleman, M G; Nathanson, L K; O'Rourke, N A; Fielding, G A

    2002-01-01

    This study was undertaken to determine the quality of information on the Internet regarding laparoscopy. Four popular World Wide Web search engines were used with the key word "laparoscopy." Advertisements, patient- or physician-directed information, and controversial material were noted. A total of 14,030 Web pages were found, but only 104 were unique Web sites. The majority of the sites were duplicate pages, subpages within a main Web page, or dead links. Twenty-eight of the 104 pages had a medical product for sale, 26 were patient-directed, 23 were written by a physician or group of physicians, and six represented corporations. The remaining 21 were "miscellaneous." The 46 pages containing educational material were critically reviewed. At least one of the senior authors found that 32 of the pages contained controversial or misleading statements. All of the three senior authors (LKN, NAO, GAF) independently agreed that 17 of the 46 pages contained controversial information. The World Wide Web is not a reliable source for patient or physician information about laparoscopy. Authenticating medical information on the World Wide Web is a difficult task, and no government or surgical society has taken the lead in regulating what is presented as fact on the World Wide Web.

  16. Extracting Macroscopic Information from Web Links.

    Science.gov (United States)

    Thelwall, Mike

    2001-01-01

    Discussion of Web-based link analysis focuses on an evaluation of Ingversen's proposed external Web Impact Factor for the original use of the Web, namely the interlinking of academic research. Studies relationships between academic hyperlinks and research activities for British universities and discusses the use of search engines for Web link…

  17. Using Google App Engine

    CERN Document Server

    Severance, Charles

    2009-01-01

    Build exciting, scalable web applications quickly and confidently using Google App Engine and this book, even if you have little or no experience in programming or web development. App Engine is perhaps the most appealing web technology to appear in the last year, providing an easy-to-use application framework with basic web tools. While Google's own tutorial assumes significant experience, Using Google App Engine will help anyone get started with this platform. By the end of this book, you'll know how to build complete, interactive applications and deploy them to the cloud using the same s

  18. Survey of Techniques for Deep Web Source Selection and Surfacing the Hidden Web Content

    OpenAIRE

    Khushboo Khurana; M.B. Chandak

    2016-01-01

    Large and continuously growing dynamic web content has created new opportunities for large-scale data analysis in the recent years. There is huge amount of information that the traditional web crawlers cannot access, since they use link analysis technique by which only the surface web can be accessed. Traditional search engine crawlers require the web pages to be linked to other pages via hyperlinks causing large amount of web data to be hidden from the crawlers. Enormous data is available in...

  19. Advanced Techniques in Web Intelligence-2 Web User Browsing Behaviour and Preference Analysis

    CERN Document Server

    Palade, Vasile; Jain, Lakhmi

    2013-01-01

    This research volume focuses on analyzing the web user browsing behaviour and preferences in traditional web-based environments, social  networks and web 2.0 applications,  by using advanced  techniques in data acquisition, data processing, pattern extraction and  cognitive science for modeling the human actions.  The book is directed to  graduate students, researchers/scientists and engineers  interested in updating their knowledge with the recent trends in web user analysis, for developing the next generation of web-based systems and applications.

  20. WEB APPLICATION TO MANAGE DOCUMENTS USING THE GOOGLE WEB TOOLKIT AND APP ENGINE TECHNOLOGIES

    Directory of Open Access Journals (Sweden)

    Velázquez Santana Eugenio César

    2017-12-01

    Full Text Available The application of new information technologies such as Google Web Toolkit and App Engine are making a difference in the academic management of Higher Education Institutions (IES, who seek to streamline their processes as well as reduce infrastructure costs. However, they encounter the problems with regard to acquisition costs, the infrastructure necessary for their use, as well as the maintenance of the software; It is for this reason that the present research aims to describe the application of these new technologies in HEIs, as well as to identify their advantages and disadvantages and the key success factors in their implementation. As a software development methodology, SCRUM was used as well as PMBOK as a project management tool. The main results were related to the application of these technologies in the development of customized software for teachers, students and administrators, as well as the weaknesses and strengths of using them in the cloud. On the other hand, it was also possible to describe the paradigm shift that data warehouses are generating with respect to today's relational databases.

  1. Metoder til kortlægning og måling af fysiske ressourcer

    DEFF Research Database (Denmark)

    Nielsen, Niels Christian

    2010-01-01

    for det. Diskussionen gik, som den nu skal, på kryds og tværs af temaer og definitioner, men jeg vil her afgrænse mig fra opgørelser af de sociale, erhvervsmæssige og økonomiske ressourcer i et lokalområde, som de to andre oplægsholdere har beskrevet. I oplægget til workshoppen udfoldedes ideen om, at en...... kort - og efterfølgende observere og sammentælle. At det ikke er helt så enkelt i virkeligheden, kommer næppe som den store overraskelse, men jeg vil i det følgende prøve at reflektere over dels hvad det egentlig vil sig at kortlægge i og omkring et lokalsamfund og dels hvilke informationer som man kan...

  2. Réserves, ressources et disponibilités mondiales en hydrocarbures World Hydrocarbon Reserves, Resources and Availabilities

    Directory of Open Access Journals (Sweden)

    Bois C.

    2006-11-01

    Full Text Available Les réserves prouvées en hydrocarbures conventionnels s'élèvent dans le monde à 90 milliards de tonnes de pétrole et 78 000 milliards de m3 de gaz, ce qui représente respectivement 30 et 50 ans au taux actuel de production. Les réserves et ressources supplémentaires à découvrir peuvent être considérées comme 2,3 à 2,4 plus importantes mais ces valeurs sont entachées d'une forte incertitude. II existe de grandes ressources en hydrocarbures non conventionnels, mais elles sont coûteuses à mettre en oeuvre et demandent surtout des investissements considérables. On peut prévoir que la production mondiale de pétrole atteindra son maximum vers 1990. Proven reserves of conventional hydrocarbons in the world amount to 90 billion tons of oil and 78 000 billion cubic meters of gas, respectively representing 30 and 50 years of supply at the present rate of production. Further reserves and resources yet to be discovered may be considered to be 2. 3 to 2. 4 times greater, but there is a high degree of uncertainty in these figures. Extensive resources of unconventional hydrocarbons exist, but they are costly to implement and, above all, require considerable investments. World petroleum production can be predicted to reach its maximum around 1990.

  3. A Novel Personalized Web Search Model

    Institute of Scientific and Technical Information of China (English)

    ZHU Zhengyu; XU Jingqiu; TIAN Yunyan; REN Xiang

    2007-01-01

    A novel personalized Web search model is proposed.The new system, as a middleware between a user and a Web search engine, is set up on the client machine. It can learn a user's preference implicitly and then generate the user profile automatically. When the user inputs query keywords, the system can automatically generate a few personalized expansion words by computing the term-term associations according to the current user profile, and then these words together with the query keywords are submitted to a popular search engine such as Yahoo or Google.These expansion words help to express accurately the user's search intention. The new Web search model can make a common search engine personalized, that is, the search engine can return different search results to different users who input the same keywords. The experimental results show the feasibility and applicability of the presented work.

  4. Aide à la décision en agriculture et gestion des ressources naturelles : note introductive

    OpenAIRE

    Jallas , Eric; Crétenet , Michel

    2003-01-01

    International audience; L'aide à la décision n'a pas pour but de se substituer aux décideurs en leur proposant des solutions "toutes faites". Elle cherche plutôt à les éclairer et à les guider vers des décisions dont ils conservent la responsabilité. Dans le domaine agricole et dans celui de la gestion des ressources naturelles, il existe aujourd'hui de nombreux outils d'aide à la décision. Les systèmes experts utilisent une base de connaissances afin de fournir des solutions, équivalentes à ...

  5. Réglementation et ressources naturelles : l’exemple de la forêt en Comtat Venaissin

    OpenAIRE

    Leroy, Nicolas

    2009-01-01

    À travers l’exemple de la forêt dans le Comtat Venaissin et la Principauté d’Orange voisine, sont approchées les réglementations visant à assurer une gestion raisonnée de la ressource bois. À la fin du Moyen Âge, la prise de conscience de la raréfaction des forêts est incontestable dans la région. Plusieurs seigneurs et communautés élaborent alors des mesures visant à concilier conservation et exploitation indispensable aux villageois. Celles-ci vont de l’interdiction assez stricte d’accès et...

  6. Anforderungen von Studierenden an e-Learning-Systeme und an die Gestaltung elektronischer Fallbeispiele [Student’s specifications of e-learning systems for case-based teaching

    Directory of Open Access Journals (Sweden)

    von Müller, Lutz

    2013-11-01

    Full Text Available [english] Evolution of case-based teaching (CBT is influenced by student’s specifications and also by improvement of computer-based e-learning systems. In the present single center study of the University of Saarland Medical Center the medical students in the third year compared two case-based e-learning systems. CAMPUS-Classic-Player is an open system with almost unrestricted decision trees whereas the CAMPUS-Card-Player represents an educational structured e-learning platform. Learning from patients and also learning from students will be introduced as our pivotal principle for development of new e-learning strategies.A significantly better evaluation was found for the more structured CAMPUS-Card-Player with respect to profile, clarity, didactics, learning effects, and relevance for exam preparation. The student’s intentions for CBT were clearly focused on usability for preparation of future exams which can be better achieved by the help of more structured e-learning systems. The time to process and answer the cases was about for both players. We therefore propose that the time schedule for most users is limited per case irrespective of the complexity of decision trees, cases or e-learning systems. This remains to be mentioned for the design of future cases. [german] Die Weiterentwicklung von fallbasiertem Lernen wird durch die Anregungen der Studierenden („user“ und durch neue technische Entwicklungen und Möglichkeiten von e-Learning-Systemen bestimmt. In dieser prospektiven monozentrischen Studie am Universitätsklinikum des Saarlandes wurde von Studierenden des 1. und 2. klinischen Semesters Medizin eine offene (CAMPUS-Classic-Player und ein strukturierte e-Learning-Plattform (CAMPUS-Card-Player für die Darstellung elektronischer Fallbeispiele verglichen und bewertet. Signifikant besser evaluiert wurde der CAMPUS-Card-Player in Bezug auf Form, Übersichtlichkeit, Zusatzmaterialien, Didaktik, Lerneffekt, Prüfungsrelevanz und

  7. 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.

  8. Changes in users' Web search performance after ten years ...

    African Journals Online (AJOL)

    The changes in users' Web search performance using search engines over ten years was investigated in this study. Matched data obtained from samples in 2000 and 2010 were used for the comparative analysis. The patterns of Web search engine use suggested a dominance in using a particular search engine. Statistical ...

  9. The Semantic Web: opportunities and challenges for next-generation Web applications

    Directory of Open Access Journals (Sweden)

    2002-01-01

    Full Text Available Recently there has been a growing interest in the investigation and development of the next generation web - the Semantic Web. While most of the current forms of web content are designed to be presented to humans, but are barely understandable by computers, the content of the Semantic Web is structured in a semantic way so that it is meaningful to computers as well as to humans. In this paper, we report a survey of recent research on the Semantic Web. In particular, we present the opportunities that this revolution will bring to us: web-services, agent-based distributed computing, semantics-based web search engines, and semantics-based digital libraries. We also discuss the technical and cultural challenges of realizing the Semantic Web: the development of ontologies, formal semantics of Semantic Web languages, and trust and proof models. We hope that this will shed some light on the direction of future work on this field.

  10. Publicizing Your Web Resources for Maximum Exposure.

    Science.gov (United States)

    Smith, Kerry J.

    2001-01-01

    Offers advice to librarians for marketing their Web sites on Internet search engines. Advises against relying solely on spiders and recommends adding metadata to the source code and delivering that information directly to the search engines. Gives an overview of metadata and typical coding for meta tags. Includes Web addresses for a number of…

  11. A grammar checker based on web searching

    Directory of Open Access Journals (Sweden)

    Joaquim Moré

    2006-05-01

    Full Text Available This paper presents an English grammar and style checker for non-native English speakers. The main characteristic of this checker is the use of an Internet search engine. As the number of web pages written in English is immense, the system hypothesises that a piece of text not found on the Web is probably badly written. The system also hypothesises that the Web will provide examples of how the content of the text segment can be expressed in a grammatically correct and idiomatic way. Thus, when the checker warns the user about the odd nature of a text segment, the Internet engine searches for contexts that can help the user decide whether he/she should correct the segment or not. By means of a search engine, the checker also suggests use of other expressions that appear on the Web more often than the expression he/she actually wrote.

  12. A Web portal for the Engineering and Equipment Data Management System at CERN

    CERN Document Server

    Tsyganov, A; Martel, P; Milenkovic, S; Suwalska, A; Delamare, Christophe; Widegren, David; Mallon Amerigo, S; Pettersson, Thomas Sven

    2010-01-01

    CERN, the European Laboratory for Particle Physics, located in Geneva – Switzerland, has recently started the Large Hadron Collider (LHC), a 27 km particle accelerator. The CERN Engineering and Equipment Data Management Service (EDMS) provides support for managing engineering and equipment information throughout the entire lifecycle of a project. Based on several both in-house developed and commercial data management systems, this service supports management and follow-up of different kinds of information throughout the lifecycle of the LHC project: design, manufacturing, installation, commissioning data, maintenance and more. The data collection phase, carried out by specialists, is now being replaced by a phase during which data will be consulted on an extensive basis by non-experts users. In order to address this change, a Web portal for the EDMS has been developed. It brings together in one space all the aspects covered by the EDMS: project and document management, asset tracking and safety follow-up. T...

  13. A design method for an intuitive web site

    Energy Technology Data Exchange (ETDEWEB)

    Quinniey, M.L.; Diegert, K.V.; Baca, B.G.; Forsythe, J.C.; Grose, E.

    1999-11-03

    The paper describes a methodology for designing a web site for human factor engineers that is applicable for designing a web site for a group of people. Many web pages on the World Wide Web are not organized in a format that allows a user to efficiently find information. Often the information and hypertext links on web pages are not organized into intuitive groups. Intuition implies that a person is able to use their knowledge of a paradigm to solve a problem. Intuitive groups are categories that allow web page users to find information by using their intuition or mental models of categories. In order to improve the human factors engineers efficiency for finding information on the World Wide Web, research was performed to develop a web site that serves as a tool for finding information effectively. The paper describes a methodology for designing a web site for a group of people who perform similar task in an organization.

  14. IMPROVING PERSONALIZED WEB SEARCH USING BOOKSHELF DATA STRUCTURE

    Directory of Open Access Journals (Sweden)

    S.K. Jayanthi

    2012-10-01

    Full Text Available Search engines are playing a vital role in retrieving relevant information for the web user. In this research work a user profile based web search is proposed. So the web user from different domain may receive different set of results. The main challenging work is to provide relevant results at the right level of reading difficulty. Estimating user expertise and re-ranking the results are the main aspects of this paper. The retrieved results are arranged in Bookshelf Data Structure for easy access. Better presentation of search results hence increases the usability of web search engines significantly in visual mode.

  15. Engineering semantic-based interactive multi-device web applications

    NARCIS (Netherlands)

    Bellekens, P.A.E.; Sluijs, van der K.A.M.; Aroyo, L.M.; Houben, G.J.P.M.; Baresi, L.; Fraternali, P.; Houben, G.J.

    2007-01-01

    To build high-quality personalized Web applications developers have to deal with a number of complex problems. We look at the growing class of personalized Web Applications that share three characteristic challenges. Firstly, the semantic problem of how to enable content reuse and integration.

  16. Semantic similarity measures in the biomedical domain by leveraging a web search engine.

    Science.gov (United States)

    Hsieh, Sheau-Ling; Chang, Wen-Yung; Chen, Chi-Huang; Weng, Yung-Ching

    2013-07-01

    Various researches in web related semantic similarity measures have been deployed. However, measuring semantic similarity between two terms remains a challenging task. The traditional ontology-based methodologies have a limitation that both concepts must be resided in the same ontology tree(s). Unfortunately, in practice, the assumption is not always applicable. On the other hand, if the corpus is sufficiently adequate, the corpus-based methodologies can overcome the limitation. Now, the web is a continuous and enormous growth corpus. Therefore, a method of estimating semantic similarity is proposed via exploiting the page counts of two biomedical concepts returned by Google AJAX web search engine. The features are extracted as the co-occurrence patterns of two given terms P and Q, by querying P, Q, as well as P AND Q, and the web search hit counts of the defined lexico-syntactic patterns. These similarity scores of different patterns are evaluated, by adapting support vector machines for classification, to leverage the robustness of semantic similarity measures. Experimental results validating against two datasets: dataset 1 provided by A. Hliaoutakis; dataset 2 provided by T. Pedersen, are presented and discussed. In dataset 1, the proposed approach achieves the best correlation coefficient (0.802) under SNOMED-CT. In dataset 2, the proposed method obtains the best correlation coefficient (SNOMED-CT: 0.705; MeSH: 0.723) with physician scores comparing with measures of other methods. However, the correlation coefficients (SNOMED-CT: 0.496; MeSH: 0.539) with coder scores received opposite outcomes. In conclusion, the semantic similarity findings of the proposed method are close to those of physicians' ratings. Furthermore, the study provides a cornerstone investigation for extracting fully relevant information from digitizing, free-text medical records in the National Taiwan University Hospital database.

  17. Dictionary of engines. The internal combustion engine from A-Z; Lexikon Motorentechnik. Der Verbrennungsmotor von A-Z

    Energy Technology Data Exchange (ETDEWEB)

    Schaefer, F. (ed.); Basshuysen, R. van

    2004-04-01

    This dictionary describes current engine technology and gives an outlook to the future. Cross-references, broader and narrower terms ensure optimal user guidance. Entries do not stand alone but provide content-oriented information. About 4,500 terms are included from A-Z, providing an outline of subjects like exhaust systems, acoustics, supercharging, combustion chamber, injection systems, control, flame propagation, mixing, catalytic converters, pistons, fuels, cooling, crank casing, stratified charging, lambda control, camshaft, oil, particulate filters, sensors/actuators, pollutants, valves, combustion processes, efficiency, ignition, cylinder head. The dictionary is for development engineers in the motor car industry, in component and system development in the supply industry, university teachers and students, foremen in motor car repair shops, etc. (orig.) [German] Das Lexikon Motorentechnik ist ein Nachschlagewerk, das die aktuelle Motorentechnik umfassend beschreibt und Ausblicke in der Zukunft ermoeglicht. Das ausgefeilte System aus Querverweisen fuehrt alle Unterbegriffe zum Hauptbegriff und ermoeglicht so eine optimale Benutzerfuehrung. Dadurch stehen die Stichwoerter nicht isoliert, sondern es werden inhaltlich zusammenhaengende Betrachtungen moeglich. Der Inhalt umfasst 4 500 Begriffe von A-Z wie z.B.: Abgastechnik, Akustik, Aufladung, Brennraum, Einspritzsysteme, Elektronische Motorsteuerung, Flammenausbreitung, Gemischbildung, Katalysator, Kolben, Kraftstoff, Kuehlung, Kurbelgehaeuse, Kurbeltrieb, Ladungswechsel, Lambda-Regelung, Nockenwelle, Oel, Partikelfilter, Sensoren/Aktuatoren, Schadstoffe, Ventiltrieb, Verbrennungsverfahren, Wirkungsgrad, Zuendung, Zylinderkopf. Die Zielgruppen waeren Ingenieure in Motoren- und Fahrzeugentwicklung der Automobilindustrie, Ingenieure in der Komponenten- und Systementwicklung der Zuliefererindustrie, Professoren und Studenten an Hochschulen mit Schwerpunkt Kraftfahrzeugtechnik, Meister in Kfz-Werkstaetten. (orig.)

  18. 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

  19. Faculty Recommendations for Web Tools: Implications for Course Management Systems

    Science.gov (United States)

    Oliver, Kevin; Moore, John

    2008-01-01

    A gap analysis of web tools in Engineering was undertaken as one part of the Digital Library Network for Engineering and Technology (DLNET) grant funded by NSF (DUE-0085849). DLNET represents a Web portal and an online review process to archive quality knowledge objects in Engineering and Technology disciplines. The gap analysis coincided with the…

  20. Remote Experiments in Control Engineering Education Laboratory

    Directory of Open Access Journals (Sweden)

    Milica B Naumović

    2008-05-01

    Full Text Available This paper presents Automatic Control Engineering Laboratory (ACEL - WebLab, an under-developed, internet-based remote laboratory for control engineering education at the Faculty of Electronic Engineering in Niš. Up to now, the remote laboratory integrates two physical systems (velocity servo system and magnetic levitation system and enables some levels of measurement and control. To perform experiments in ACEL-WebLab, the "LabVIEW Run Time Engine"and a standard web browser are needed.

  1. La Gestion Locale Sécurisée (GELOSE : L’expérience malgache de gestion décentralisée des ressources naturelles

    Directory of Open Access Journals (Sweden)

    Bruno Sarrasin

    2009-09-01

    Full Text Available Marqué par une biodiversité exceptionnelle et une grande pauvreté humaine, la destruction rapide des ressources naturelles à Madagascar place le territoire et son appropriation au centre des enjeux de développement. Dans ce contexte, cet article s’intéresse à l’émergence et à la mise en œuvre d’une politique publique touchant la Gestion LOcale SÉcurisée (GELOSE dont le principal objectif vise à transférer la gestion de ces ressources, de l’État vers les communautés locales, dans le but de les protéger plus efficacement. Cette lecture montre cependant que les objectifs, les ressources et les stratégies des principaux acteurs concernés sont difficilement conciliables et que le système de relation qu’il induit n’est pas nécessairement en phase avec les finalités poursuivies.Marked by exceptional biodiversity and extreme human poverty, Madagascar is experiencing a rapid destruction of its natural resources, placing territory and its appropriation at the heart of development issues. From this perspective, this article will look at the development and implementation of a public policy, the Gestion LOcale SÉcurisée (GELOSE, for the local management of natural renewable resources. This regulation seeks to transfer the management of these resources from the government to local communities in the goal of protecting them more effectively. We will see, however, that the objectives, resources and strategies of the primary actors concerned are difficult to reconcile at best and that the relational system to which the policy gives rise is not necessarily in keeping with the goals being pursued.

  2. Exposing the Hidden-Web Induced by Ajax

    NARCIS (Netherlands)

    Mesbah, A.; Van Deursen, A.

    2008-01-01

    AJAX is a very promising approach for improving rich interactivity and responsiveness of web applications. At the same time, AJAX techniques increase the totality of the hidden web by shattering the metaphor of a web ‘page’ upon which general search engines are based. This paper describes a

  3. Deep Web and Dark Web: Deep World of the Internet

    OpenAIRE

    Çelik, Emine

    2018-01-01

    The Internet is undoubtedly still a revolutionary breakthrough in the history of humanity. Many people use the internet for communication, social media, shopping, political and social agenda, and more. Deep Web and Dark Web concepts not only handled by computer, software engineers but also handled by social siciensists because of the role of internet for the States in international arenas, public institutions and human life. By the moving point that very importantrole of internet for social s...

  4. Applying Semantic Web technologies to improve the retrieval, credibility and use of health-related web resources.

    Science.gov (United States)

    Mayer, Miguel A; Karampiperis, Pythagoras; Kukurikos, Antonis; Karkaletsis, Vangelis; Stamatakis, Kostas; Villarroel, Dagmar; Leis, Angela

    2011-06-01

    The number of health-related websites is increasing day-by-day; however, their quality is variable and difficult to assess. Various "trust marks" and filtering portals have been created in order to assist consumers in retrieving quality medical information. Consumers are using search engines as the main tool to get health information; however, the major problem is that the meaning of the web content is not machine-readable in the sense that computers cannot understand words and sentences as humans can. In addition, trust marks are invisible to search engines, thus limiting their usefulness in practice. During the last five years there have been different attempts to use Semantic Web tools to label health-related web resources to help internet users identify trustworthy resources. This paper discusses how Semantic Web technologies can be applied in practice to generate machine-readable labels and display their content, as well as to empower end-users by providing them with the infrastructure for expressing and sharing their opinions on the quality of health-related web resources.

  5. Start Your Engines: Surfing with Search Engines for Kids.

    Science.gov (United States)

    Byerly, Greg; Brodie, Carolyn S.

    1999-01-01

    Suggests that to be an effective educator and user of the Web it is essential to know the basics about search engines. Presents tips for using search engines. Describes several search engines for children and young adults, as well as some general filtered search engines for children. (AEF)

  6. BaBar - A Community Web Site in an Organizational Setting

    Energy Technology Data Exchange (ETDEWEB)

    White, Bebo

    2003-07-10

    The BABAR Web site was established in 1993 at the Stanford Linear Accelerator Center (SLAC) to support the BABAR experiment, to report its results, and to facilitate communication among its scientific and engineering collaborators, currently numbering about 600 individuals from 75 collaborating institutions in 10 countries. The BABAR Web site is, therefore, a community Web site. At the same time it is hosted at SLAC and funded by agencies that demand adherence to policies decided under different priorities. Additionally, the BABAR Web administrators deal with the problems that arise during the course of managing users, content, policies, standards, and changing technologies. Desired solutions to some of these problems may be incompatible with the overall administration of the SLAC Web sites and/or the SLAC policies and concerns. There are thus different perspectives of the same Web site and differing expectations in segments of the SLAC population which act as constraints and challenges in any review or re-engineering activities. Web Engineering, which post-dates the BABAR Web, has aimed to provide a comprehensive understanding of all aspects of Web development. This paper reports on the first part of a recent review of application of Web Engineering methods to the BABAR Web site, which has led to explicit user and information models of the BABAR community and how SLAC and the BABAR community relate and react to each other. The paper identifies the issues of a community Web site in a hierarchical, semi-governmental sector and formulates a strategy for periodic reviews of BABAR and similar sites. A separate paper reports on the findings of a user survey and selected interviews with users, along with their implications and recommendations for future.

  7. BaBar - A Community Web Site in an Organizational Setting

    International Nuclear Information System (INIS)

    White, Bebo

    2003-01-01

    The BABAR Web site was established in 1993 at the Stanford Linear Accelerator Center (SLAC) to support the BABAR experiment, to report its results, and to facilitate communication among its scientific and engineering collaborators, currently numbering about 600 individuals from 75 collaborating institutions in 10 countries. The BABAR Web site is, therefore, a community Web site. At the same time it is hosted at SLAC and funded by agencies that demand adherence to policies decided under different priorities. Additionally, the BABAR Web administrators deal with the problems that arise during the course of managing users, content, policies, standards, and changing technologies. Desired solutions to some of these problems may be incompatible with the overall administration of the SLAC Web sites and/or the SLAC policies and concerns. There are thus different perspectives of the same Web site and differing expectations in segments of the SLAC population which act as constraints and challenges in any review or re-engineering activities. Web Engineering, which post-dates the BABAR Web, has aimed to provide a comprehensive understanding of all aspects of Web development. This paper reports on the first part of a recent review of application of Web Engineering methods to the BABAR Web site, which has led to explicit user and information models of the BABAR community and how SLAC and the BABAR community relate and react to each other. The paper identifies the issues of a community Web site in a hierarchical, semi-governmental sector and formulates a strategy for periodic reviews of BABAR and similar sites. A separate paper reports on the findings of a user survey and selected interviews with users, along with their implications and recommendations for future

  8. Study of Search Engine Transaction Logs Shows Little Change in How Users use Search Engines. A review of: Jansen, Bernard J., and Amanda Spink. “How Are We Searching the World Wide Web? A Comparison of Nine Search Engine Transaction Logs.” Information Processing & Management 42.1 (2006: 248‐263.

    Directory of Open Access Journals (Sweden)

    David Hook

    2006-09-01

    Full Text Available Objective – To examine the interactions between users and search engines, and how they have changed over time. Design – Comparative analysis of search engine transaction logs. Setting – Nine major analyses of search engine transaction logs. Subjects – Nine web search engine studies (4 European, 5 American over a seven‐year period, covering the search engines Excite, Fireball, AltaVista, BWIE and AllTheWeb. Methods – The results from individual studies are compared by year of study for percentages of single query sessions, one term queries, operator (and, or, not, etc. usage and single result page viewing. As well, the authors group the search queries into eleven different topical categories and compare how the breakdown has changed over time. Main Results – Based on the percentage of single query sessions, it does not appear that the complexity of interactions has changed significantly for either the U.S.‐based or the European‐based search engines. As well, there was little change observed in the percentage of one‐term queries over the years of study for either the U.S.‐based or the European‐based search engines. Few users (generally less than 20% use Boolean or other operators in their queries, and these percentages have remained relatively stable. One area of noticeable change is in the percentage of users viewing only one results page, which has increased over the years of study. Based on the studies of the U.S.‐based search engines, the topical categories of ‘People, Place or Things’ and ‘Commerce, Travel, Employment or Economy’ are becoming more popular, while the categories of ‘Sex and Pornography’ and ‘Entertainment or Recreation’ are declining. Conclusions – The percentage of users viewing only one results page increased during the years of the study, while the percentages of single query sessions, oneterm sessions and operator usage remained stable. The increase in single result page viewing

  9. Experience of Developing a Meta-Semantic Search Engine

    OpenAIRE

    Mukhopadhyay, Debajyoti; Sharma, Manoj; Joshi, Gajanan; Pagare, Trupti; Palwe, Adarsha

    2013-01-01

    Thinking of todays web search scenario which is mainly keyword based, leads to the need of effective and meaningful search provided by Semantic Web. Existing search engines are vulnerable to provide relevant answers to users query due to their dependency on simple data available in web pages. On other hand, semantic search engines provide efficient and relevant results as the semantic web manages information with well defined meaning using ontology. A Meta-Search engine is a search tool that ...

  10. FindZebra: A search engine for rare diseases

    DEFF Research Database (Denmark)

    Dragusin, Radu; Petcu, Paula; Lioma, Christina Amalia

    2013-01-01

    Background: The web has become a primary information resource about illnesses and treatments for both medical and non-medical users. Standard web search is by far the most common interface for such information. It is therefore of interest to find out how well web search engines work for diagnostic...... approach for web search engines for rare disease diagnosis which includes 56 real life diagnostic cases, state-of-the-art evaluation measures, and curated information resources. In addition, we introduce FindZebra, a specialized (vertical) rare disease search engine. FindZebra is powered by open source...... medical concepts to demonstrate different ways of displaying the retrieved results to medical experts. Conclusions: Our results indicate that a specialized search engine can improve the diagnostic quality without compromising the ease of use of the currently widely popular web search engines. The proposed...

  11. A reverse engineering approach for automatic annotation of Web pages

    NARCIS (Netherlands)

    R. de Virgilio (Roberto); F. Frasincar (Flavius); W. Hop (Walter); S. Lachner (Stephan)

    2013-01-01

    textabstractThe Semantic Web is gaining increasing interest to fulfill the need of sharing, retrieving, and reusing information. Since Web pages are designed to be read by people, not machines, searching and reusing information on the Web is a difficult task without human participation. To this aim

  12. SPADOCK: Adaptive Pipeline Technology for Web System using WebSocket

    Directory of Open Access Journals (Sweden)

    Aries RICHI

    2013-01-01

    Full Text Available As information technology grows to the era of IoT(Internet of Things and cloud computing, the performance ofweb application and web service which acts as the informationgateway becomes an issue. Horizontal quality of serviceimprovement through system performance escalation becomesan issue pursued by engineers and scientists, giving birth toBigPipe pipeline technology which was developed by Facebook.We make SPADOCK, an adaptive pipeline system which is builtunder distributed system architecture with the utilization ofHTML5 WebSocket, then measure its performance. Parametersused for the measurement includes latency, workload, andbandwidth. The result shows that SPADOCK could reduceserving latency by 68.28% compared with the conventional web,and it is 20.63% faster than BigPipe.

  13. How much data resides in a web collection: how to estimate size of a web collection

    NARCIS (Netherlands)

    Khelghati, Mohammadreza; Hiemstra, Djoerd; van Keulen, Maurice

    2013-01-01

    With increasing amount of data in deep web sources (hidden from general search engines behind web forms), accessing this data has gained more attention. In the algorithms applied for this purpose, it is the knowledge of a data source size that enables the algorithms to make accurate decisions in

  14. 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...

  15. Exploring the academic invisible web

    OpenAIRE

    Lewandowski, Dirk

    2006-01-01

    The Invisible Web is often discussed in the academic context, where its contents (mainly in the form of databases) are of great importance. But this discussion is mainly based on some seminal research done by Sherman and Price (2001) and Bergman (2001), respectively. We focus on the types of Invisible Web content relevant for academics and the improvements made by search engines to deal with these content types. In addition, we question the volume of the Invisible Web as stated by Bergman. Ou...

  16. Finding Specification Pages from the Web

    Science.gov (United States)

    Yoshinaga, Naoki; Torisawa, Kentaro

    This paper presents a method of finding a specification page on the Web for a given object (e.g., ``Ch. d'Yquem'') and its class label (e.g., ``wine''). A specification page for an object is a Web page which gives concise attribute-value information about the object (e.g., ``county''-``Sauternes'') in well formatted structures. A simple unsupervised method using layout and symbolic decoration cues was applied to a large number of the Web pages to acquire candidate attributes for each class (e.g., ``county'' for a class ``wine''). We then filter out irrelevant words from the putative attributes through an author-aware scoring function that we called site frequency. We used the acquired attributes to select a representative specification page for a given object from the Web pages retrieved by a normal search engine. Experimental results revealed that our system greatly outperformed the normal search engine in terms of this specification retrieval.

  17. Surfing the World Wide Web to Education Hot-Spots.

    Science.gov (United States)

    Dyrli, Odvard Egil

    1995-01-01

    Provides a brief explanation of Web browsers and their use, as well as technical information for those considering access to the WWW (World Wide Web). Curriculum resources and addresses to useful Web sites are included. Sidebars show sample searches using Yahoo and Lycos search engines, and a list of recommended Web resources. (JKP)

  18. WebPIE : A web-scale parallel inference engine using MapReduce

    NARCIS (Netherlands)

    Urbani, Jacopo; Kotoulas, Spyros; Maassen, Jason; Van Harmelen, Frank; Bal, Henri

    2012-01-01

    The large amount of Semantic Web data and its fast growth pose a significant computational challenge in performing efficient and scalable reasoning. On a large scale, the resources of single machines are no longer sufficient and we are required to distribute the process to improve performance. The

  19. Construction of a bibliographic information database and a web directory for the nuclear science and engineering

    Energy Technology Data Exchange (ETDEWEB)

    Oh, Jeong Hoon; Kim, Tae Whan; Lee, Ji Ho; Chun, Young Chun; Yu, An Na

    2005-11-15

    The objective of this project is to construct the bibliographic information database and the web directory in the nuclear field. Its construction is very timely and important. Because nuclear science and technology has an considerable effect all over the other sciences and technologies due to its property of giant and complex engineering. We aimed to firmly build up a basis of efficient management of the bibliographic information database and the web directory in the nuclear field. The results of this project that we achieved in this year are as follows : first, construction of the bibliographic information database in the nuclear field(the target title: 1,500 titles ; research report: 1,000 titles, full-text report: 250 titles, full-text article: 250 titles). Second, completion of construction of the web directory in the nuclear field by using SWING (the total figure achieved : 2,613 titles). We plan that we will positively give more information to the general public interested in the nuclear field and to the experts of the field through this bibliographic information database on KAERI's home page, KAERI's electronic library and other related sites as well as participation at various seminars and meetings related to the nuclear field.

  20. A novel architecture for information retrieval system based on semantic web

    Science.gov (United States)

    Zhang, Hui

    2011-12-01

    Nowadays, the web has enabled an explosive growth of information sharing (there are currently over 4 billion pages covering most areas of human endeavor) so that the web has faced a new challenge of information overhead. The challenge that is now before us is not only to help people locating relevant information precisely but also to access and aggregate a variety of information from different resources automatically. Current web document are in human-oriented formats and they are suitable for the presentation, but machines cannot understand the meaning of document. To address this issue, Berners-Lee proposed a concept of semantic web. With semantic web technology, web information can be understood and processed by machine. It provides new possibilities for automatic web information processing. A main problem of semantic web information retrieval is that when these is not enough knowledge to such information retrieval system, the system will return to a large of no sense result to uses due to a huge amount of information results. In this paper, we present the architecture of information based on semantic web. In addiction, our systems employ the inference Engine to check whether the query should pose to Keyword-based Search Engine or should pose to the Semantic Search Engine.

  1. Cost estimation in software engineering projects with web components development

    Directory of Open Access Journals (Sweden)

    Javier de Andrés

    2015-01-01

    Full Text Available Existen multitud de modelos propuestos para la predicción de co stes en proyectos de software, al gunos orientados específicamen te para proyectos Web. Este trabajo analiza si los modelos específicos para proyectos Web están justifi cados, examinando el comportami ento diferencial de los costes entre proyectos de desarrollo softwar e Web y no Web. Se analizan dos aspectos del cálculo de costes: las deseconomías de escala, y el im pacto de algunas características de estos proyectos que son utilizadas como cost drivers. Se en uncian dos hipótesis: (a en estos proyect os las deseconomías de escala so n mayores y (b el incremento de coste que provocan los cost dr ivers es menor para los proyectos Web. Se contrastaron estas hipótesis a nalizando un conjunto de proyectos reales. Los resultados sugie ren que ambas hipótesis se cumplen. Por lo tanto, la principal contribu ción a la literatura de esta inv estigación es que el desarrollo de modelos específicos para los proyectos Web está justificado.

  2. Web sites that work secrets from winning web sites

    CERN Document Server

    Smith, Jon

    2012-01-01

    Leading web site entrepreneur Jon Smith has condensed the secrets of his success into 52 inspiring ideas that even the most hopeless technophobe can implement. The brilliant tips and practical advice in Web sites that work will uplift and transform any website, from the simplest to the most complicated. It deals with everything from fundamentals such as how to assess the effectiveness of a website and how to get a site listed on the most popular search engines to more sophisticated challenges like creating a community and dealing with legal requirements. Straight-talking, practical and humorou

  3. Pro JavaScript for web apps

    CERN Document Server

    Freeman, Adam

    2012-01-01

    JavaScript is the engine behind every web app, and a solid knowledge of it is essential for all modern web developers. Pro JavaScript for Web Apps gives you all of the information that you need to create professional, optimized, and efficient JavaScript applications that will run across all devices. It takes you through all aspects of modern JavaScript application creation, showing you how to combine JavaScript with the new features of HTML5 and CSS3 to make the most of the new web technologies. The focus of the book is on creating professional web applications, ensuring that your app provides

  4. Search engines that learn from their users

    NARCIS (Netherlands)

    Schuth, A.G.

    2016-01-01

    More than half the world’s population uses web search engines, resulting in over half a billion search queries every single day. For many people web search engines are among the first resources they go to when a question arises. Moreover, search engines have for many become the most trusted route to

  5. GeNemo: a search engine for web-based functional genomic data.

    Science.gov (United States)

    Zhang, Yongqing; Cao, Xiaoyi; Zhong, Sheng

    2016-07-08

    A set of new data types emerged from functional genomic assays, including ChIP-seq, DNase-seq, FAIRE-seq and others. The results are typically stored as genome-wide intensities (WIG/bigWig files) or functional genomic regions (peak/BED files). These data types present new challenges to big data science. Here, we present GeNemo, a web-based search engine for functional genomic data. GeNemo searches user-input data against online functional genomic datasets, including the entire collection of ENCODE and mouse ENCODE datasets. Unlike text-based search engines, GeNemo's searches are based on pattern matching of functional genomic regions. This distinguishes GeNemo from text or DNA sequence searches. The user can input any complete or partial functional genomic dataset, for example, a binding intensity file (bigWig) or a peak file. GeNemo reports any genomic regions, ranging from hundred bases to hundred thousand bases, from any of the online ENCODE datasets that share similar functional (binding, modification, accessibility) patterns. This is enabled by a Markov Chain Monte Carlo-based maximization process, executed on up to 24 parallel computing threads. By clicking on a search result, the user can visually compare her/his data with the found datasets and navigate the identified genomic regions. GeNemo is available at www.genemo.org. © The Author(s) 2016. Published by Oxford University Press on behalf of Nucleic Acids Research.

  6. Detection And Classification Of Web Robots With Honeypots

    Science.gov (United States)

    2016-03-01

    Web robots are valuable tools for indexing content on the Web, they can also be malicious through phishing , spamming, or performing targeted attacks...indexing content on the Web, they can also be malicious through phishing , spamming, or performing targeted attacks. In this thesis, we study an approach...programs has been attributed to the explosion in content and user-generated social media on the Internet. The Web search engines like Google require

  7. Social Networking on the Semantic Web

    Science.gov (United States)

    Finin, Tim; Ding, Li; Zhou, Lina; Joshi, Anupam

    2005-01-01

    Purpose: Aims to investigate the way that the semantic web is being used to represent and process social network information. Design/methodology/approach: The Swoogle semantic web search engine was used to construct several large data sets of Resource Description Framework (RDF) documents with social network information that were encoded using the…

  8. IntegromeDB: an integrated system and biological search engine.

    Science.gov (United States)

    Baitaluk, Michael; Kozhenkov, Sergey; Dubinina, Yulia; Ponomarenko, Julia

    2012-01-19

    With the growth of biological data in volume and heterogeneity, web search engines become key tools for researchers. However, general-purpose search engines are not specialized for the search of biological data. Here, we present an approach at developing a biological web search engine based on the Semantic Web technologies and demonstrate its implementation for retrieving gene- and protein-centered knowledge. The engine is available at http://www.integromedb.org. The IntegromeDB search engine allows scanning data on gene regulation, gene expression, protein-protein interactions, pathways, metagenomics, mutations, diseases, and other gene- and protein-related data that are automatically retrieved from publicly available databases and web pages using biological ontologies. To perfect the resource design and usability, we welcome and encourage community feedback.

  9. Marketing plan for a web shop business

    OpenAIRE

    Koskivaara, Leonilla

    2014-01-01

    Internet has changed the buying behavior of consumers during the past years and companies need to adapt to the changes. Web shop business is an important sales channel of today’s companies. Advantages of a web shop business include cost effectiveness and potential to do business globally. Challenges of a web shop business include search engine optimization and running both, a retail store and a web shop at the same time. Social media has become an important marketing channel and has bec...

  10. CHIME : service-oriented framework for adaptive web-based systems

    NARCIS (Netherlands)

    Chepegin, V.; Aroyo, L.M.; De Bra, P.M.E.; Houben, G.J.P.M.; De Bra, P.M.E.

    2003-01-01

    In this paper we present our view on how the current development of knowledge engineering in the context of Semantic Web can contribute to the better applicability, reusability and sharability of adaptive web-based systems. We propose a service-oriented framework for adaptive web-based systems,

  11. Overview of the TREC 2014 Federated Web Search Track

    NARCIS (Netherlands)

    Demeester, Thomas; Trieschnigg, Rudolf Berend; Nguyen, Dong-Phuong; Zhou, Ke; Hiemstra, Djoerd

    2014-01-01

    The TREC Federated Web Search track facilitates research in topics related to federated web search, by providing a large realistic data collection sampled from a multitude of online search engines. The FedWeb 2013 challenges of Resource Selection and Results Merging challenges are again included in

  12. 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.

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

    Science.gov (United States)

    Gessler, Damian D G; Schiltz, Gary S; May, Greg D; Avraham, Shulamit; Town, Christopher D; Grant, David; Nelson, Rex T

    2009-09-23

    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. 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"). 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 subsumption hierarchies, and iii) the

  14. Web-based Analysis Services Report

    CERN Document Server

    AUTHOR|(CDS)2108758; Canali, Luca; Grancher, Eric; Lamanna, Massimo; McCance, Gavin; Mato Vila, Pere; Piparo, Danilo; Moscicki, Jakub; Pace, Alberto; Brito Da Rocha, Ricardo; Simko, Tibor; Smith, Tim; Tejedor Saavedra, Enric; CERN. Geneva. IT Department

    2017-01-01

    Web-based services (cloud services) is an important trend to innovate end-user services while optimising the service operational costs. CERN users are constantly proposing new approaches (inspired from services existing on the web, tools used in education or other science or based on their experience in using existing computing services). In addition, industry and open source communities have recently made available a large number of powerful and attractive tools and platforms that enable large scale data processing. “Big Data” software stacks notably provide solutions for scalable storage, distributed compute and data analysis engines, data streaming, web-based interfaces (notebooks). Some of those platforms and tools, typically available as open source products, are experiencing a very fast adoption in industry and science such that they are becoming “de facto” references in several areas of data engineering, data science and machine learning. In parallel to users' requests, WLCG is considering to c...

  15. The new active driving safety system ESP (Electronic Stability Program) developed by Mercedes Benz; Das neue aktive Fahrsicherheitssystem ESP (Elektronisches-Stabilitaets-Programm) von Mercedes-Benz

    Energy Technology Data Exchange (ETDEWEB)

    Paul, J. [Mercedes-Benz AG, Stuttgart (Germany); Klinkner, W. [Mercedes-Benz AG, Stuttgart (Germany); Mueller, A. [Mercedes-Benz AG, Stuttgart (Germany)

    1995-12-31

    The new electronic stability program (ESP) offered by Mercedes-Benz as a world novelty in March 1995 is the consequent further development of the anti-lock braking system and the anti-slip control. An improved assessment of the handling properties by a steering wheel sensor, a yaw velocity sensor, a brake pressure sensor and a hydraulic system that brakes each wheel individually and is controlled by a complex logic allow the supervision and the active control of the cross-dynamic handling properties up to limiting ranges. The handling of the vehicle in critical situations (e.g. strong oversteering or understeering) has been considerably improved. (orig.) [Deutsch] Das neue elektronische-Stabilitaets-Programm (ESP), von Mercedes-Benz ab Maerz 1995 als Weltneuheit angeboten, stellt eine konsequente Weiterentwicklung des Antiblockier-Bremssystems (ABS) und der Antriebsschlupfregelung (ASR) dar. Eine erweiterte Fahrzustandserfassung durch Lenkradwinkel-, Giergeschwindigkeit- und Bremsdrucksensor, eine Hydraulik, die jedes Rad individuell abbremsen kann, angesteuert durch eine komplexe Regelungslogik, erlauben erstmals eine Ueberwachung und aktive Regelung des querdynamischen Fahrzustands bis in den Grenzbereich. Die Beherrschbarkeit des Fahrzeugs wird in kritischen Situationen (z.B. starkes Ueber- oder Untersteuern) entscheidend verbessert. (orig.)

  16. Development of Content Management System-based Web Applications

    NARCIS (Netherlands)

    Souer, J.

    2012-01-01

    Web engineering is the application of systematic and quantifiable approaches (concepts, methods, techniques, tools) to cost-effective requirements analysis, design, implementation, testing, operation, and maintenance of high quality web applications. Over the past years, Content Management Systems

  17. A Survey On Various Web Template Detection And Extraction Methods

    Directory of Open Access Journals (Sweden)

    Neethu Mary Varghese

    2015-03-01

    Full Text Available Abstract In todays digital world reliance on the World Wide Web as a source of information is extensive. Users increasingly rely on web based search engines to provide accurate search results on a wide range of topics that interest them. The search engines in turn parse the vast repository of web pages searching for relevant information. However majority of web portals are designed using web templates which are designed to provide consistent look and feel to end users. The presence of these templates however can influence search results leading to inaccurate results being delivered to the users. Therefore to improve the accuracy and reliability of search results identification and removal of web templates from the actual content is essential. A wide range of approaches are commonly employed to achieve this and this paper focuses on the study of the various approaches of template detection and extraction that can be applied across homogenous as well as heterogeneous web pages.

  18. 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

  19. La grille, le World Wide Web du futur

    CERN Multimedia

    2001-01-01

    De nombreux chercheurs trouvent internet trop lent et limité. C'est pourquoi, ils travaillent sur un nouveau réseau : le Grid. Le Grid permettra de mieux partager les ressources informatiques en réseau (1 page).

  20. Needle Custom Search: Recall-oriented search on the Web using semantic annotations

    NARCIS (Netherlands)

    Kaptein, Rianne; Koot, Gijs; Huis in 't Veld, Mirjam A.A.; van den Broek, Egon; de Rijke, Maarten; Kenter, Tom; de Vries, A.P.; Zhai, Chen Xiang; de Jong, Franciska M.G.; Radinsky, Kira; Hofmann, Katja

    Web search engines are optimized for early precision, which makes it difficult to perform recall-oriented tasks using these search engines. In this article, we present our tool Needle Custom Search. This tool exploits semantic annotations of Web search results and, thereby, increase the efficiency

  1. Needle Custom Search : Recall-oriented search on the web using semantic annotations

    NARCIS (Netherlands)

    Kaptein, Rianne; Koot, Gijs; Huis in 't Veld, Mirjam A.A.; van den Broek, Egon L.

    2014-01-01

    Web search engines are optimized for early precision, which makes it difficult to perform recall-oriented tasks using these search engines. In this article, we present our tool Needle Custom Search. This tool exploits semantic annotations of Web search results and, thereby, increase the efficiency

  2. Overview of the TREC 2013 Federated Web Search Track

    NARCIS (Netherlands)

    Demeester, Thomas; Trieschnigg, Rudolf Berend; Nguyen, Dong-Phuong; Hiemstra, Djoerd

    2014-01-01

    The TREC Federated Web Search track is intended to promote research related to federated search in a realistic web setting, and hereto provides a large data collection gathered from a series of online search engines. This overview paper discusses the results of the first edition of the track, FedWeb

  3. Recommendations for Benchmarking Web Site Usage among Academic Libraries.

    Science.gov (United States)

    Hightower, Christy; Sih, Julie; Tilghman, Adam

    1998-01-01

    To help library directors and Web developers create a benchmarking program to compare statistics of academic Web sites, the authors analyzed the Web server log files of 14 university science and engineering libraries. Recommends a centralized voluntary reporting structure coordinated by the Association of Research Libraries (ARL) and a method for…

  4. Web corpus construction

    CERN Document Server

    Schafer, Roland

    2013-01-01

    The World Wide Web constitutes the largest existing source of texts written in a great variety of languages. A feasible and sound way of exploiting this data for linguistic research is to compile a static corpus for a given language. There are several adavantages of this approach: (i) Working with such corpora obviates the problems encountered when using Internet search engines in quantitative linguistic research (such as non-transparent ranking algorithms). (ii) Creating a corpus from web data is virtually free. (iii) The size of corpora compiled from the WWW may exceed by several orders of magnitudes the size of language resources offered elsewhere. (iv) The data is locally available to the user, and it can be linguistically post-processed and queried with the tools preferred by her/him. This book addresses the main practical tasks in the creation of web corpora up to giga-token size. Among these tasks are the sampling process (i.e., web crawling) and the usual cleanups including boilerplate removal and rem...

  5. [Development of domain specific search engines].

    Science.gov (United States)

    Takai, T; Tokunaga, M; Maeda, K; Kaminuma, T

    2000-01-01

    As cyber space exploding in a pace that nobody has ever imagined, it becomes very important to search cyber space efficiently and effectively. One solution to this problem is search engines. Already a lot of commercial search engines have been put on the market. However these search engines respond with such cumbersome results that domain specific experts can not tolerate. Using a dedicate hardware and a commercial software called OpenText, we have tried to develop several domain specific search engines. These engines are for our institute's Web contents, drugs, chemical safety, endocrine disruptors, and emergent response for chemical hazard. These engines have been on our Web site for testing.

  6. Engineering Education Tool for Distance Telephone Traffic Learning Through Web

    Directory of Open Access Journals (Sweden)

    Leonimer Flávio de Melo

    2012-11-01

    Full Text Available This work subject focuses in distance learning (DL modality by the Internet. The use of calculators and simulators software introduces a high level of interactivity in DL systems, such as Matlab software proposed by using in this work. The use of efficient mathematical packages and hypermedia technologies opens the door to a new paradigm of teaching and learning in the dawn of this new millennium. The use of hypertext, graphics, animation, audio, video, efficient calculators and simulators incorporating artificial intelligence techniques and the advance in the broadband networks will pave the way to this new horizon. The contribution of this work, besides the Matlab Web integration, is the developing of an introductory course in traffic engineering in hypertext format. Also, calculators to the most employed expressions of traffic analysis were developed to the Matlab server environment. By the use of the telephone traffic calculator, the user inputs data on his or her Internet browser and the systems returns numerical data, graphics and tables in HTML pages. The system is also very useful for Professional traffic calculations, replacing with advantages the use of the traditional methods by means of static tables and graphics in paper format.

  7. Procédé de traitement d'une ressource fluide, programme d'ordinateur et module de traitement associés

    OpenAIRE

    Rapaport, Alain; Rousseau, Antoine; Harmand, Jérôme

    2014-01-01

    Pour la bio-remédiation de ressources en eau (bassins, lacs..) qui nécessitent d’être traitées par une unité externe de purification à l’aide de bioprocédés, l’invention consiste à mettre en place un réseau « intelligent » de pompes qui s’adaptent au cours du temps à l’hydrodynamique et à la pollution du milieu. L’objectif est d’optimiser la durée du traitement et/ou la qualité de la remédiation.

  8. Habitat-mediated variation in the importance of ecosystem engineers for secondary cavity nesters in a nest web.

    Science.gov (United States)

    Robles, Hugo; Martin, Kathy

    2014-01-01

    Through physical state changes in biotic or abiotic materials, ecosystem engineers modulate resource availability to other organisms and are major drivers of evolutionary and ecological dynamics. Understanding whether and how ecosystem engineers are interchangeable for resource users in different habitats is a largely neglected topic in ecosystem engineering research that can improve our understanding of the structure of communities. We addressed this issue in a cavity-nest web (1999-2011). In aspen groves, the presence of mountain bluebird (Sialia currucoides) and tree swallow (Tachycineta bicolour) nests was positively related to the density of cavities supplied by northern flickers (Colaptes auratus), which provided the most abundant cavities (1.61 cavities/ha). Flickers in aspen groves provided numerous nesting cavities to bluebirds (66%) and swallows (46%), despite previous research showing that flicker cavities are avoided by swallows. In continuous mixed forests, however, the presence of nesting swallows was mainly related to cavity density of red-naped sapsuckers (Sphyrapicus nuchalis), which provided the most abundant cavities (0.52 cavities/ha), and to cavity density of hairy woodpeckers (Picoides villosus), which provided few (0.14 cavities/ha) but high-quality cavities. Overall, sapsuckers and hairy woodpeckers provided 86% of nesting cavities to swallows in continuous forests. In contrast, the presence of nesting bluebirds in continuous forests was associated with the density of cavities supplied by all the ecosystem engineers. These results suggest that (i) habitat type may mediate the associations between ecosystem engineers and resource users, and (ii) different ecosystem engineers may be interchangeable for resource users depending on the quantity and quality of resources that each engineer supplies in each habitat type. We, therefore, urge the incorporation of the variation in the quantity and quality of resources provided by ecosystem engineers

  9. Engineering Adaptive Applications

    DEFF Research Database (Denmark)

    Dolog, Peter

    for a domain.In this book, we propose a new domain engineering framework which extends a development process of Web applications with techniques required when designing such adaptive customizable Web applications. The framework is provided with design abstractions which deal separately with information served...

  10. An Efficient Approach for Web Indexing of Big Data through Hyperlinks in Web Crawling

    Science.gov (United States)

    Devi, R. Suganya; Manjula, D.; Siddharth, R. K.

    2015-01-01

    Web Crawling has acquired tremendous significance in recent times and it is aptly associated with the substantial development of the World Wide Web. Web Search Engines face new challenges due to the availability of vast amounts of web documents, thus making the retrieved results less applicable to the analysers. However, recently, Web Crawling solely focuses on obtaining the links of the corresponding documents. Today, there exist various algorithms and software which are used to crawl links from the web which has to be further processed for future use, thereby increasing the overload of the analyser. This paper concentrates on crawling the links and retrieving all information associated with them to facilitate easy processing for other uses. In this paper, firstly the links are crawled from the specified uniform resource locator (URL) using a modified version of Depth First Search Algorithm which allows for complete hierarchical scanning of corresponding web links. The links are then accessed via the source code and its metadata such as title, keywords, and description are extracted. This content is very essential for any type of analyser work to be carried on the Big Data obtained as a result of Web Crawling. PMID:26137592

  11. Search Engine Optimization

    CERN Document Server

    Davis, Harold

    2006-01-01

    SEO--short for Search Engine Optimization--is the art, craft, and science of driving web traffic to web sites. Web traffic is food, drink, and oxygen--in short, life itself--to any web-based business. Whether your web site depends on broad, general traffic, or high-quality, targeted traffic, this PDF has the tools and information you need to draw more traffic to your site. You'll learn how to effectively use PageRank (and Google itself); how to get listed, get links, and get syndicated; and much more. The field of SEO is expanding into all the possible ways of promoting web traffic. This

  12. Discovering How Students Search a Library Web Site: A Usability Case Study.

    Science.gov (United States)

    Augustine, Susan; Greene, Courtney

    2002-01-01

    Discusses results of a usability study at the University of Illinois Chicago that investigated whether Internet search engines have influenced the way students search library Web sites. Results show students use the Web site's internal search engine rather than navigating through the pages; have difficulty interpreting library terminology; and…

  13. Sagace: A web-based search engine for biomedical databases in Japan

    Directory of Open Access Journals (Sweden)

    Morita Mizuki

    2012-10-01

    Full Text Available Abstract Background In the big data era, biomedical research continues to generate a large amount of data, and the generated information is often stored in a database and made publicly available. Although combining data from multiple databases should accelerate further studies, the current number of life sciences databases is too large to grasp features and contents of each database. Findings We have developed Sagace, a web-based search engine that enables users to retrieve information from a range of biological databases (such as gene expression profiles and proteomics data and biological resource banks (such as mouse models of disease and cell lines. With Sagace, users can search more than 300 databases in Japan. Sagace offers features tailored to biomedical research, including manually tuned ranking, a faceted navigation to refine search results, and rich snippets constructed with retrieved metadata for each database entry. Conclusions Sagace will be valuable for experts who are involved in biomedical research and drug development in both academia and industry. Sagace is freely available at http://sagace.nibio.go.jp/en/.

  14. Introduction to Webometrics Quantitative Web Research for the Social Sciences

    CERN Document Server

    Thelwall, Michael

    2009-01-01

    Webometrics is concerned with measuring aspects of the web: web sites, web pages, parts of web pages, words in web pages, hyperlinks, web search engine results. The importance of the web itself as a communication medium and for hosting an increasingly wide array of documents, from journal articles to holiday brochures, needs no introduction. Given this huge and easily accessible source of information, there are limitless possibilities for measuring or counting on a huge scale (e.g., the number of web sites, the number of web pages, the number of blogs) or on a smaller scale (e.g., the number o

  15. Multitasking Web Searching and Implications for Design.

    Science.gov (United States)

    Ozmutlu, Seda; Ozmutlu, H. C.; Spink, Amanda

    2003-01-01

    Findings from a study of users' multitasking searches on Web search engines include: multitasking searches are a noticeable user behavior; multitasking search sessions are longer than regular search sessions in terms of queries per session and duration; both Excite and AlltheWeb.com users search for about three topics per multitasking session and…

  16. Quality of Web-Based Information on Cannabis Addiction

    Science.gov (United States)

    Khazaal, Yasser; Chatton, Anne; Cochand, Sophie; Zullino, Daniele

    2008-01-01

    This study evaluated the quality of Web-based information on cannabis use and addiction and investigated particular content quality indicators. Three keywords ("cannabis addiction," "cannabis dependence," and "cannabis abuse") were entered into two popular World Wide Web search engines. Websites were assessed with a standardized proforma designed…

  17. 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.

  18. Reflect: a practical approach to web semantics

    DEFF Research Database (Denmark)

    O'Donoghue, S.I.; Horn, Heiko; Pafilisa, E.

    2010-01-01

    To date, adding semantic capabilities to web content usually requires considerable server-side re-engineering, thus only a tiny fraction of all web content currently has semantic annotations. Recently, we announced Reflect (http://reflect.ws), a free service that takes a more practical approach......: Reflect uses augmented browsing to allow end-users to add systematic semantic annotations to any web-page in real-time, typically within seconds. In this paper we describe the tagging process in detail and show how further entity types can be added to Reflect; we also describe how publishers and content...... web technologies....

  19. Federated Search and the Library Web Site: A Study of Association of Research Libraries Member Web Sites

    Science.gov (United States)

    Williams, Sarah C.

    2010-01-01

    The purpose of this study was to investigate how federated search engines are incorporated into the Web sites of libraries in the Association of Research Libraries. In 2009, information was gathered for each library in the Association of Research Libraries with a federated search engine. This included the name of the federated search service and…

  20. Overview of the TREC 2014 Federated Web Search Track

    OpenAIRE

    Demeester, Thomas; Trieschnigg, Rudolf Berend; Nguyen, Dong-Phuong; Zhou, Ke; Hiemstra, Djoerd

    2014-01-01

    The TREC Federated Web Search track facilitates research in topics related to federated web search, by providing a large realistic data collection sampled from a multitude of online search engines. The FedWeb 2013 challenges of Resource Selection and Results Merging challenges are again included in FedWeb 2014, and we additionally introduced the task of vertical selection. Other new aspects are the required link between the Resource Selection and Results Merging, and the importance of diversi...

  1. 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

  2. AN OVERVIEW OF SEARCHING AND DISCOVERING WEB BASED INFORMATION RESOURCES

    Directory of Open Access Journals (Sweden)

    Cezar VASILESCU

    2010-01-01

    Full Text Available The Internet becomes for most of us a daily used instrument, for professional or personal reasons. We even do not remember the times when a computer and a broadband connection were luxury items. More and more people are relying on the complicated web network to find the needed information.This paper presents an overview of Internet search related issues, upon search engines and describes the parties and the basic mechanism that is embedded in a search for web based information resources. Also presents ways to increase the efficiency of web searches, through a better understanding of what search engines ignore at websites content.

  3. Quality analysis of patient information about knee arthroscopy on the World Wide Web.

    Science.gov (United States)

    Sambandam, Senthil Nathan; Ramasamy, Vijayaraj; Priyanka, Priyanka; Ilango, Balakrishnan

    2007-05-01

    This study was designed to ascertain the quality of patient information available on the World Wide Web on the topic of knee arthroscopy. For the purpose of quality analysis, we used a pool of 232 search results obtained from 7 different search engines. We used a modified assessment questionnaire to assess the quality of these Web sites. This questionnaire was developed based on similar studies evaluating Web site quality and includes items on illustrations, accessibility, availability, accountability, and content of the Web site. We also compared results obtained with different search engines and tried to establish the best possible search strategy to attain the most relevant, authentic, and adequate information with minimum time consumption. For this purpose, we first compared 100 search results from the single most commonly used search engine (AltaVista) with the pooled sample containing 20 search results from each of the 7 different search engines. The search engines used were metasearch (Copernic and Mamma), general search (Google, AltaVista, and Yahoo), and health topic-related search engines (MedHunt and Healthfinder). The phrase "knee arthroscopy" was used as the search terminology. Excluding the repetitions, there were 117 Web sites available for quality analysis. These sites were analyzed for accessibility, relevance, authenticity, adequacy, and accountability by use of a specially designed questionnaire. Our analysis showed that most of the sites providing patient information on knee arthroscopy contained outdated information, were inadequate, and were not accountable. Only 16 sites were found to be providing reasonably good patient information and hence can be recommended to patients. Understandably, most of these sites were from nonprofit organizations and educational institutions. Furthermore, our study revealed that using multiple search engines increases patients' chances of obtaining more relevant information rather than using a single search

  4. GLIDERS - A web-based search engine for genome-wide linkage disequilibrium between HapMap SNPs

    Directory of Open Access Journals (Sweden)

    Broxholme John

    2009-10-01

    Full Text Available Abstract Background A number of tools for the examination of linkage disequilibrium (LD patterns between nearby alleles exist, but none are available for quickly and easily investigating LD at longer ranges (>500 kb. We have developed a web-based query tool (GLIDERS: Genome-wide LInkage DisEquilibrium Repository and Search engine that enables the retrieval of pairwise associations with r2 ≥ 0.3 across the human genome for any SNP genotyped within HapMap phase 2 and 3, regardless of distance between the markers. Description GLIDERS is an easy to use web tool that only requires the user to enter rs numbers of SNPs they want to retrieve genome-wide LD for (both nearby and long-range. The intuitive web interface handles both manual entry of SNP IDs as well as allowing users to upload files of SNP IDs. The user can limit the resulting inter SNP associations with easy to use menu options. These include MAF limit (5-45%, distance limits between SNPs (minimum and maximum, r2 (0.3 to 1, HapMap population sample (CEU, YRI and JPT+CHB combined and HapMap build/release. All resulting genome-wide inter-SNP associations are displayed on a single output page, which has a link to a downloadable tab delimited text file. Conclusion GLIDERS is a quick and easy way to retrieve genome-wide inter-SNP associations and to explore LD patterns for any number of SNPs of interest. GLIDERS can be useful in identifying SNPs with long-range LD. This can highlight mis-mapping or other potential association signal localisation problems.

  5. Interactive Web-based e-learning for Studying Flexible Manipulator Systems

    Directory of Open Access Journals (Sweden)

    Abul K. M. Azad

    2008-03-01

    Full Text Available Abstract— This paper presents a web-based e-leaning facility for simulation, modeling, and control of flexible manipulator systems. The simulation and modeling part includes finite difference and finite element simulations along with neural network and genetic algorithm based modeling strategies for flexible manipulator systems. The controller part constitutes a number of open-loop and closed-loop designs. Closed loop control designs include the classical, adaptive, and neuro-model based strategies. Matlab software package and its associated toolboxes are used to implement these. The Matlab web server is used as the gateway between the facility and web-access. ASP.NET technology and SQL database are utilized to develop web applications for access control, user account and password maintenance, administrative management, and facility utilization monitoring. The reported facility provides a flexible but effective approach of web-based interactive e-learning facility of an engineering system. This can be extended to incorporate additional engineering systems within the e-learning framework.

  6. Gas sensing with field-effect transistors

    NARCIS (Netherlands)

    Andringa, Anne-Marije

    2013-01-01

    Kleine en goedkope elektronische gassensoren kunnen worden ingezet voor allerlei toepassingen, zoals het meten van de luchtkwaliteit in de binnen- of buitenlucht, het stellen van medische diagnoses of het bewaken van de voedselkwaliteit. Doordat elektronische sensors elektrisch kunnen worden

  7. Problem-Based Learning in Web Environments: The Case of ``Virtual eBMS'' for Business Engineering Education

    Science.gov (United States)

    Elia, Gianluca; Secundo, Giustina; Taurino, Cesare

    This chapter presents a case study where Problem Based Learning (PBL) approach is applied to a Web-based environment. It first describes the main features behind the PBL for creating Business Engineers able to face the grand technological challenges of the 2020. Then it introduces a Web Based system supporting the PBL strategy, called the “Virtual eBMS”. This system has been designed and implemented at the e-Business Management Section of the Scuola Superiore ISUFI - University of Salento (Italy), in the framework of a research project carried out in collaboration with IBM. Besides the logical and technological description of Virtual eBMS, the chapter presents two applications of the platform in two different contexts: an academic context (international master) and an entrepreneurial context (awareness workshop with companies and entrepreneurs). The system is illustrated starting from the description of an operational framework for designing curricula PBL based from the author perspective and, then, illustrating a typical scenario of a learner accessing to the curricula. In the description, it is highlighted both the “structured” way and the “unstructured” way to create and follow an entire learning path.

  8. Measuring Personalization of Web Search

    DEFF Research Database (Denmark)

    Hannak, Aniko; Sapiezynski, Piotr; Kakhki, Arash Molavi

    2013-01-01

    are simply unable to access information that the search engines’ algorithm decidesis irrelevant. Despitetheseconcerns, there has been little quantification of the extent of personalization in Web search today, or the user attributes that cause it. In light of this situation, we make three contributions...... as a result of searching with a logged in account and the IP address of the searching user. Our results are a first step towards understanding the extent and effects of personalization on Web search engines today....

  9. Web application to access U.S. Army Corps of Engineers Civil Works and Restoration Projects information for the Rio Grande Basin, southern Colorado, New Mexico, and Texas

    Science.gov (United States)

    Archuleta, Christy-Ann M.; Eames, Deanna R.

    2009-01-01

    The Rio Grande Civil Works and Restoration Projects Web Application, developed by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers (USACE) Albuquerque District, is designed to provide publicly available information through the Internet about civil works and restoration projects in the Rio Grande Basin. Since 1942, USACE Albuquerque District responsibilities have included building facilities for the U.S. Army and U.S. Air Force, providing flood protection, supplying water for power and public recreation, participating in fire remediation, protecting and restoring wetlands and other natural resources, and supporting other government agencies with engineering, contracting, and project management services. In the process of conducting this vast array of engineering work, the need arose for easily tracking the locations of and providing information about projects to stakeholders and the public. This fact sheet introduces a Web application developed to enable users to visualize locations and search for information about USACE (and some other Federal, State, and local) projects in the Rio Grande Basin in southern Colorado, New Mexico, and Texas.

  10. Web information retrieval based on ontology

    Science.gov (United States)

    Zhang, Jian

    2013-03-01

    The purpose of the Information Retrieval (IR) is to find a set of documents that are relevant for a specific information need of a user. Traditional Information Retrieval model commonly used in commercial search engine is based on keyword indexing system and Boolean logic queries. One big drawback of traditional information retrieval is that they typically retrieve information without an explicitly defined domain of interest to the users so that a lot of no relevance information returns to users, which burden the user to pick up useful answer from these no relevance results. In order to tackle this issue, many semantic web information retrieval models have been proposed recently. The main advantage of Semantic Web is to enhance search mechanisms with the use of Ontology's mechanisms. In this paper, we present our approach to personalize web search engine based on ontology. In addition, key techniques are also discussed in our paper. Compared to previous research, our works concentrate on the semantic similarity and the whole process including query submission and information annotation.

  11. QUEST: An Assessment Tool for Web-Based Learning.

    Science.gov (United States)

    Choren, Ricardo; Blois, Marcelo; Fuks, Hugo

    In 1997, the Software Engineering Laboratory at Pontifical Catholic University of Rio de Janeiro (Brazil) implemented the first version of AulaNet (TM) a World Wide Web-based educational environment. Some of the teaching staff will use this environment in 1998 to offer regular term disciplines through the Web. This paper introduces Quest, a tool…

  12. Drexel at TREC 2014 Federated Web Search Track

    Science.gov (United States)

    2014-11-01

    of its input RS results. 1. INTRODUCTION Federated Web Search is the task of searching multiple search engines simultaneously and combining their...or distributed properly[5]. The goal of RS is then, for a given query, to select only the most promising search engines from all those available. Most...result pages of 149 search engines . 4000 queries are used in building the sample set. As a part of the Vertical Selection task, search engines are

  13. Software engineering

    CERN Document Server

    Sommerville, Ian

    2010-01-01

    The ninth edition of Software Engineering presents a broad perspective of software engineering, focusing on the processes and techniques fundamental to the creation of reliable, software systems. Increased coverage of agile methods and software reuse, along with coverage of 'traditional' plan-driven software engineering, gives readers the most up-to-date view of the field currently available. Practical case studies, a full set of easy-to-access supplements, and extensive web resources make teaching the course easier than ever.

  14. Graph Structure in Three National Academic Webs: Power Laws with Anomalies.

    Science.gov (United States)

    Thelwall, Mike; Wilkinson, David

    2003-01-01

    Explains how the Web can be modeled as a mathematical graph and analyzes the graph structures of three national university publicly indexable Web sites from Australia, New Zealand, and the United Kingdom. Topics include commercial search engines and academic Web link research; method-analysis environment and data sets; and power laws. (LRW)

  15. 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.

  16. COEUS: "semantic web in a box" for biomedical applications.

    Science.gov (United States)

    Lopes, Pedro; Oliveira, José Luís

    2012-12-17

    As the "omics" revolution unfolds, the growth in data quantity and diversity is bringing about the need for pioneering bioinformatics software, capable of significantly improving the research workflow. To cope with these computer science demands, biomedical software engineers are adopting emerging semantic web technologies that better suit the life sciences domain. The latter's complex relationships are easily mapped into semantic web graphs, enabling a superior understanding of collected knowledge. Despite increased awareness of semantic web technologies in bioinformatics, their use is still limited. COEUS is a new semantic web framework, aiming at a streamlined application development cycle and following a "semantic web in a box" approach. The framework provides a single package including advanced data integration and triplification tools, base ontologies, a web-oriented engine and a flexible exploration API. Resources can be integrated from heterogeneous sources, including CSV and XML files or SQL and SPARQL query results, and mapped directly to one or more ontologies. Advanced interoperability features include REST services, a SPARQL endpoint and LinkedData publication. These enable the creation of multiple applications for web, desktop or mobile environments, and empower a new knowledge federation layer. The platform, targeted at biomedical application developers, provides a complete skeleton ready for rapid application deployment, enhancing the creation of new semantic information systems. COEUS is available as open source at http://bioinformatics.ua.pt/coeus/.

  17. Python for Google app engine

    CERN Document Server

    Pippi, Massimiliano

    2015-01-01

    If you are a Python developer, whether you have experience in web applications development or not, and want to rapidly deploy a scalable backend service or a modern web application on Google App Engine, then this book is for you.

  18. Distributed Deep Web Search

    NARCIS (Netherlands)

    Tjin-Kam-Jet, Kien

    2013-01-01

    The World Wide Web contains billions of documents (and counting); hence, it is likely that some document will contain the answer or content you are searching for. While major search engines like Bing and Google often manage to return relevant results to your query, there are plenty of situations in

  19. Teknik Perangkingan Meta-search Engine

    OpenAIRE

    Puspitaningrum, Diyah

    2014-01-01

    Meta-search engine mengorganisasikan penyatuan hasil dari berbagai search engine dengan tujuan untuk meningkatkan presisi hasil pencarian dokumen web. Pada survei teknik perangkingan meta-search engine ini akan didiskusikan isu-isu pra-pemrosesan, rangking, dan berbagai teknik penggabungan hasil pencarian dari search engine yang berbeda-beda (multi-kombinasi). Isu-isu implementasi penggabungan 2 search engine dan 3 search engine juga menjadi sorotan. Pada makalah ini juga dibahas arahan penel...

  20. La gestion des ressources renouvelables: vers un gestion patrimoniale des écosystèmes

    Directory of Open Access Journals (Sweden)

    2004-01-01

    Full Text Available Cet article analyse et critique les approches de gestion biologique et économique des ressources naturelles traditionnellement appliquées. Sont présentées des alternatives à ces modèles, basées sur l’institutionnalisme et l’approche de gestion patrimoniale. Ce cadre théorique devrait favoriser la mise en œuvre d’une gestion viable des écosystèmes. Este artículo analiza y critica los modelos de gestión biológica y económica de recursos naturales tradicionalmente aplicados. Se presentan alternativas a estos modelos, basados en el institucionalismo y el manejo patrimonial, los que constituirían un marco teórico que viabilice la gestión de recursos naturales en los ecosistemas. This paper analyses and criticizes traditional approaches to biological and economic management of natural resources. Alternative approaches are presented based on institutionalism and heritage management these constitute a theoretical framework for the implementation of appropriate natural resource use in ecosystems.

  1. Engineering Geology | Alaska Division of Geological & Geophysical Surveys

    Science.gov (United States)

    Alaska's Mineral Industry Reports AKGeology.info Rare Earth Elements WebGeochem Engineering Geology Alaska content Engineering Geology Additional information Engineering Geology Posters and Presentations Alaska Alaska MAPTEACH Tsunami Inundation Mapping Engineering Geology Staff Projects The Engineering Geology

  2. Politique d’acquisitions foncières et protection de la ressource en eau

    Directory of Open Access Journals (Sweden)

    LAMOUREUX, Ludovic

    2016-05-01

    Full Text Available La préservation des eaux souterraines et des rivières est un enjeu majeur pour les opérateurs en charge de l'alimentation en eau potable sur un territoire. Eau de Paris, l'opérateur public qui produit et distribue l'eau dans Paris mobilise de nombreux dispositifs pour protéger et restaurer la qualité de l'eau. Depuis plus de vingt ans, il conduit notamment une politique de maîtrise foncière des terrains ruraux situés dans les zones vulnérables des aires d’alimentation des captages, qui vise principalement à limiter les risques de pollution des nappes, mais également à servir de modèle et de levier pour des pratiques agricoles favorisant la préservation de la ressource en eau. Cet article nous présente ici l'intérêt d'une telle démarche, mais également les difficultés rencontrées par l'opérateur pour mener cette politique d'acquisition foncière en milieu rural.

  3. Web document clustering using hyperlink structures

    Energy Technology Data Exchange (ETDEWEB)

    He, Xiaofeng; Zha, Hongyuan; Ding, Chris H.Q; Simon, Horst D.

    2001-05-07

    With the exponential growth of information on the World Wide Web there is great demand for developing efficient and effective methods for organizing and retrieving the information available. Document clustering plays an important role in information retrieval and taxonomy management for the World Wide Web and remains an interesting and challenging problem in the field of web computing. In this paper we consider document clustering methods exploring textual information hyperlink structure and co-citation relations. In particular we apply the normalized cut clustering method developed in computer vision to the task of hyperdocument clustering. We also explore some theoretical connections of the normalized-cut method to K-means method. We then experiment with normalized-cut method in the context of clustering query result sets for web search engines.

  4. A semantics-based aspect-oriented approach to adaptation in web engineering

    NARCIS (Netherlands)

    Casteleyn, S.; Van Woensel, W.; Houben, G.J.P.M.

    2007-01-01

    In the modern Web, users are accessing their favourite Web applications from any place, at any time and with any device. In this setting, they expect the application to user-tailor and personalize content access upon their particular needs. Exhibiting some kind of user- and context-dependency is

  5. How Google Web Search copes with very similar documents

    NARCIS (Netherlands)

    W. Mettrop (Wouter); P. Nieuwenhuysen; H. Smulders

    2006-01-01

    textabstractA significant portion of the computer files that carry documents, multimedia, programs etc. on the Web are identical or very similar to other files on the Web. How do search engines cope with this? Do they perform some kind of “deduplication”? How should users take into account that

  6. Web-based information search and retrieval: effects of strategy use and age on search success.

    Science.gov (United States)

    Stronge, Aideen J; Rogers, Wendy A; Fisk, Arthur D

    2006-01-01

    The purpose of this study was to investigate the relationship between strategy use and search success on the World Wide Web (i.e., the Web) for experienced Web users. An additional goal was to extend understanding of how the age of the searcher may influence strategy use. Current investigations of information search and retrieval on the Web have provided an incomplete picture of Web strategy use because participants have not been given the opportunity to demonstrate their knowledge of Web strategies while also searching for information on the Web. Using both behavioral and knowledge-engineering methods, we investigated searching behavior and system knowledge for 16 younger adults (M = 20.88 years of age) and 16 older adults (M = 67.88 years). Older adults were less successful than younger adults in finding correct answers to the search tasks. Knowledge engineering revealed that the age-related effect resulted from ineffective search strategies and amount of Web experience rather than age per se. Our analysis led to the development of a decision-action diagram representing search behavior for both age groups. Older adults had more difficulty than younger adults when searching for information on the Web. However, this difficulty was related to the selection of inefficient search strategies, which may have been attributable to a lack of knowledge about available Web search strategies. Actual or potential applications of this research include training Web users to search more effectively and suggestions to improve the design of search engines.

  7. A Method for Transforming Existing Web Service Descriptions into an Enhanced Semantic Web Service Framework

    Science.gov (United States)

    Du, Xiaofeng; Song, William; Munro, Malcolm

    Web Services as a new distributed system technology has been widely adopted by industries in the areas, such as enterprise application integration (EAI), business process management (BPM), and virtual organisation (VO). However, lack of semantics in the current Web Service standards has been a major barrier in service discovery and composition. In this chapter, we propose an enhanced context-based semantic service description framework (CbSSDF+) that tackles the problem and improves the flexibility of service discovery and the correctness of generated composite services. We also provide an agile transformation method to demonstrate how the various formats of Web Service descriptions on the Web can be managed and renovated step by step into CbSSDF+ based service description without large amount of engineering work. At the end of the chapter, we evaluate the applicability of the transformation method and the effectiveness of CbSSDF+ through a series of experiments.

  8. Kansei Engineering and Website Design

    DEFF Research Database (Denmark)

    Song, Zheng; Howard, Thomas J.; Achiche, Sofiane

    2012-01-01

    a methodology based on Kansei Engineering, which has done significant work in product and industrial design but not quite been adopted in the IT field, in order to discover implicit emotional needs of users toward web site and transform them into design details. Survey and interview techniques and statistical...... methods were performed in this paper. A prototype web site was produced based on the Kansei results integrated with technical expertise and practical considerations. The results showed that the Kansei Engineering methodology in this paper played a significant role in web site design in terms of satisfying......Capturing users’ needs is critical in web site design. However, a lot of attention has been paid to enhance the functionality and usability, whereas much less consideration has been given to satisfy the emotional needs of users, which is also important to a successful design. This paper explores...

  9. The sources and popularity of online drug information: an analysis of top search engine results and web page views.

    Science.gov (United States)

    Law, Michael R; Mintzes, Barbara; Morgan, Steven G

    2011-03-01

    The Internet has become a popular source of health information. However, there is little information on what drug information and which Web sites are being searched. To investigate the sources of online information about prescription drugs by assessing the most common Web sites returned in online drug searches and to assess the comparative popularity of Web pages for particular drugs. This was a cross-sectional study of search results for the most commonly dispensed drugs in the US (n=278 active ingredients) on 4 popular search engines: Bing, Google (both US and Canada), and Yahoo. We determined the number of times a Web site appeared as the first result. A linked retrospective analysis counted Wikipedia page hits for each of these drugs in 2008 and 2009. About three quarters of the first result on Google USA for both brand and generic names linked to the National Library of Medicine. In contrast, Wikipedia was the first result for approximately 80% of generic name searches on the other 3 sites. On these other sites, over two thirds of brand name searches led to industry-sponsored sites. The Wikipedia pages with the highest number of hits were mainly for opiates, benzodiazepines, antibiotics, and antidepressants. Wikipedia and the National Library of Medicine rank highly in online drug searches. Further, our results suggest that patients most often seek information on drugs with the potential for dependence, for stigmatized conditions, that have received media attention, and for episodic treatments. Quality improvement efforts should focus on these drugs.

  10. New website will help record vital life events to improve access to ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    7 févr. 2018 ... Strengthening civil registration and vital statistics (CRVS) systems in ... Free resource library, with curated documents, information videos, terms and definitions ... Le nouveau site Web et la nouvelle bibliothèque de ressources ...

  11. Implementasi Seo Web Design Methodology Pada Official Homepage Pondok Pesantren Qodratullah

    OpenAIRE

    Ependi, Usman

    2013-01-01

    Homepage or website for an organization is a way to deliver information to the public. Now the number of homepage or website of the day is always increasing both personal or owned by the organization. To communicate or disseminate information homepage/ website Islamic Boarding School of Qodratullah need a surefire way to use the Search Engine Optimization Web Design Methodology. Conducted with the implementation of the Search Engine Optimization Web Design Methodology on the homepage/ website...

  12. A study on the personalization methods of the web | Hajighorbani ...

    African Journals Online (AJOL)

    ... methods of correct patterns and analyze them. Here we will discuss the basic concepts of web personalization and consider the three approaches of web personalization and we evaluated the methods belonging to each of them. Keywords: personalization, search engine, user preferences, data mining methods ...

  13. Next-Gen Search Engines

    Science.gov (United States)

    Gupta, Amardeep

    2005-01-01

    Current search engines--even the constantly surprising Google--seem unable to leap the next big barrier in search: the trillions of bytes of dynamically generated data created by individual web sites around the world, or what some researchers call the "deep web." The challenge now is not information overload, but information overlook.…

  14. Final Technical Report; NUCLEAR ENGINEERING RECRUITMENT EFFORT

    Energy Technology Data Exchange (ETDEWEB)

    Kerrick, Sharon S.; Vincent, Charles D.

    2007-07-02

    This report provides the summary of a project whose purpose was to support the costs of developing a nuclear engineering awareness program, an instruction program for teachers to integrate lessons on nuclear science and technology into their existing curricula, and web sites for the exchange of nuclear engineering career information and classroom materials. The specific objectives of the program were as follows: OBJECTIVE 1: INCREASE AWARENESS AND INTEREST OF NUCLEAR ENGINEERING; OBJECTIVE 2: INSTRUCT TEACHERS ON NUCLEAR TOPICS; OBJECTIVE 3: NUCLEAR EDUCATION PROGRAMS WEB-SITE; OBJECTIVE 4: SUPPORT TO UNIVERSITY/INDUSTRY MATCHING GRANTS AND REACTOR SHARING; OBJECTIVE 5: PILOT PROJECT; OBJECTIVE 6: NUCLEAR ENGINEERING ENROLLMENT SURVEY AT UNIVERSITIES

  15. Estimating Search Engine Index Size Variability

    DEFF Research Database (Denmark)

    Van den Bosch, Antal; Bogers, Toine; De Kunder, Maurice

    2016-01-01

    One of the determining factors of the quality of Web search engines is the size of their index. In addition to its influence on search result quality, the size of the indexed Web can also tell us something about which parts of the WWW are directly accessible to the everyday user. We propose a novel...... method of estimating the size of a Web search engine’s index by extrapolating from document frequencies of words observed in a large static corpus of Web pages. In addition, we provide a unique longitudinal perspective on the size of Google and Bing’s indices over a nine-year period, from March 2006...... until January 2015. We find that index size estimates of these two search engines tend to vary dramatically over time, with Google generally possessing a larger index than Bing. This result raises doubts about the reliability of previous one-off estimates of the size of the indexed Web. We find...

  16. Web of Science, Scopus, and Google Scholar citation rates: a case study of medical physics and biomedical engineering: what gets cited and what doesn't?

    Science.gov (United States)

    Trapp, Jamie

    2016-12-01

    There are often differences in a publication's citation count, depending on the database accessed. Here, aspects of citation counts for medical physics and biomedical engineering papers are studied using papers published in the journal Australasian physical and engineering sciences in medicine. Comparison is made between the Web of Science, Scopus, and Google Scholar. Papers are categorised into subject matter, and citation trends are examined. It is shown that review papers as a group tend to receive more citations on average; however the highest cited individual papers are more likely to be research papers.

  17. Raising Reliability of Web Search Tool Research through Replication and Chaos Theory

    OpenAIRE

    Nicholson, Scott

    1999-01-01

    Because the World Wide Web is a dynamic collection of information, the Web search tools (or "search engines") that index the Web are dynamic. Traditional information retrieval evaluation techniques may not provide reliable results when applied to the Web search tools. This study is the result of ten replications of the classic 1996 Ding and Marchionini Web search tool research. It explores the effects that replication can have on transforming unreliable results from one iteration into replica...

  18. Engineering High Assurance Distributed Cyber Physical Systems

    Science.gov (United States)

    2015-01-15

    engineering ( MDE ), Model- centric software engineering (MCSE), and others have attempted to leverage and integrate techniques for requirements...Part I: Principles of Software Engineering.” IBM Syst. J. 38, 2-3, pp.289-295, June 1999. [2] Xie, T, “Software Engineering Conferences”, web page

  19. E-commerce in the banking sector

    NARCIS (Netherlands)

    Stroeken, J.H.M.; Munck, S.G.E. de; Hawkins, R.

    2001-01-01

    Het doel van de studie is het verschaffen van inzicht in de effecten van e-commerce in de Nederlandse banksector. Elektronische transactie omgevingen als zodanig zijn niet nieuw voor banken, en financiële dienstverlening heeft altijd al te maken gehad met intermediëring door elektronische netwerken.

  20. Estimating search engine index size variability: a 9-year longitudinal study.

    Science.gov (United States)

    van den Bosch, Antal; Bogers, Toine; de Kunder, Maurice

    One of the determining factors of the quality of Web search engines is the size of their index. In addition to its influence on search result quality, the size of the indexed Web can also tell us something about which parts of the WWW are directly accessible to the everyday user. We propose a novel method of estimating the size of a Web search engine's index by extrapolating from document frequencies of words observed in a large static corpus of Web pages. In addition, we provide a unique longitudinal perspective on the size of Google and Bing's indices over a nine-year period, from March 2006 until January 2015. We find that index size estimates of these two search engines tend to vary dramatically over time, with Google generally possessing a larger index than Bing. This result raises doubts about the reliability of previous one-off estimates of the size of the indexed Web. We find that much, if not all of this variability can be explained by changes in the indexing and ranking infrastructure of Google and Bing. This casts further doubt on whether Web search engines can be used reliably for cross-sectional webometric studies.

  1. Web Viz 2.0: A versatile suite of tools for collaboration and visualization

    Science.gov (United States)

    Spencer, C.; Yuen, D. A.

    2012-12-01

    Most scientific applications on the web fail to realize the full collaborative potential of the internet by not utilizing web 2.0 technology. To relieve users from the struggle with software tools and allow them to focus on their research, new software developed for scientists and researchers must harness the full suite of web technology. For several years WebViz 1.0 enabled researchers with any web accessible device to interact with the peta-scale data generated by the Hierarchical Volume Renderer (HVR) system. We have developed a new iteration of WebViz that can be easily interfaced with many problem domains in addition to HVR by employing the best practices of software engineering and object-oriented programming. This is done by separating the core WebViz system from domain specific code at an interface, leveraging inheritance and polymorphism to allow newly developed modules access to the core services. We employed several design patterns (model-view-controller, singleton, observer, and application controller) to engineer this highly modular system implemented in Java.

  2. The Invisible Web: Uncovering Information Sources Search Engines Can't See.

    Science.gov (United States)

    Sherman, Chris; Price, Gary

    This book takes a detailed look at the nature and extent of the Invisible Web, and offers pathfinders for accessing the valuable information it contains. It is designed to fit the needs of both novice and advanced Web searchers. Chapter One traces the development of the Internet and many of the early tools used to locate and share information via…

  3. An application of TOPSIS for ranking internet web browsers

    Directory of Open Access Journals (Sweden)

    Shahram Rostampour

    2012-07-01

    Full Text Available Web browser is one of the most important internet facilities for surfing the internet. A good web browser must incorporate literally tens of features such as integrated search engine, automatic updates, etc. Each year, ten web browsers are formally introduced as top best reviewers by some organizations. In this paper, we propose the implementation of TOPSIS technique to rank ten web browsers. The proposed model of this paper uses five criteria including speed, features, security, technical support and supported configurations. In terms of speed, Safari is the best web reviewer followed by Google Chrome and Internet Explorer while Opera is the best web reviewer when we look into 20 different features. We have also ranked these web browsers using all five categories together and the results indicate that Opera, Internet explorer, Firefox and Google Chrome are the best web browsers to be chosen.

  4. Ada & the Analytical Engine.

    Science.gov (United States)

    Freeman, Elisabeth

    1996-01-01

    Presents a brief history of Ada Byron King, Countess of Lovelace, focusing on her primary role in the development of the Analytical Engine--the world's first computer. Describes the Ada Project (TAP), a centralized World Wide Web site that serves as a clearinghouse for information related to women in computing, and provides a Web address for…

  5. Remittances to Conflict Zones : the Sudanese Diaspora in Cairo ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  6. Mapping Criminal Governance in African Cities | Page 3 | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  7. Moroccan Coastal Management : Building Capacity to Adapt to ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  8. Harmonisation des méthodologies de planification et d'évaluation ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  9. Capacité de recherche accrue pour améliorer la gestion des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  10. Subvention-relais : susciter un appui canadien à la recherche en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  11. Educational Research Network for West and Central Africa ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  12. Analyse du financement de la santé et des avantages en Ouganda ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  13. Designing and Conducting Health Systems Research Projects ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  14. Soutien institutionnel au Groupe de recherche en économie ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  15. Les institutions de recherche sur les politiques et les ODD liés à la ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  16. Gestion des déchets ménagers en milieu urbain à l'aide d'une ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  17. Un mur contre la malaria : Du nouveau dans la prévention des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  18. Using Diversity : Enhancing and Maintaining Genetic Resources On ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  19. Soutien institutionnel au Centre for the Study of the Economies of ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  20. Droit administratif international - amélioration des rapports ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le nouveau site Web facilitera l'enregistrement des événements démographiques afin d'améliorer l'accès aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  1. Uncovering Web search strategies in South African higher education

    Directory of Open Access Journals (Sweden)

    Surika Civilcharran

    2016-11-01

    Full Text Available Background: In spite of the enormous amount of information available on the Web and the fact that search engines are continuously evolving to enhance the search experience, students are nevertheless faced with the difficulty of effectively retrieving information. It is, therefore, imperative for the interaction between students and search tools to be understood and search strategies to be identified, in order to promote successful information retrieval. Objectives: This study identifies the Web search strategies used by postgraduate students and forms part of a wider study into information retrieval strategies used by postgraduate students at the University of KwaZulu-Natal (UKZN, Pietermaritzburg campus, South Africa. Method: Largely underpinned by Thatcher’s cognitive search strategies, the mixed-methods approach was utilised for this study, in which questionnaires were employed in Phase 1 and structured interviews in Phase 2. This article reports and reflects on the findings of Phase 2, which focus on identifying the Web search strategies employed by postgraduate students. The Phase 1 results were reported in Civilcharran, Hughes and Maharaj (2015. Results: Findings reveal the Web search strategies used for academic information retrieval. In spite of easy access to the invisible Web and the advent of meta-search engines, the use of Web search engines still remains the preferred search tool. The UKZN online library databases and especially the UKZN online library, Online Public Access Catalogue system, are being underutilised. Conclusion: Being ranked in the top three percent of the world’s universities, UKZN is investing in search tools that are not being used to their full potential. This evidence suggests an urgent need for students to be trained in Web searching and to have a greater exposure to a variety of search tools. This article is intended to further contribute to the design of undergraduate training programmes in order to deal

  2. Overview of the TREC 2013 federated web search track

    OpenAIRE

    Demeester, Thomas; Trieschnigg, D; Nguyen, D; Hiemstra, D

    2013-01-01

    The TREC Federated Web Search track is intended to promote research related to federated search in a realistic web setting, and hereto provides a large data collection gathered from a series of online search engines. This overview paper discusses the results of the first edition of the track, FedWeb 2013. The focus was on basic challenges in federated search: (1) resource selection, and (2) results merging. After an overview of the provided data collection and the relevance judgments for the ...

  3. E-commerce in the banking sector

    NARCIS (Netherlands)

    Stroeken, J.H.M.; Munck, S.G.E. de; Hawkins, R.

    2001-01-01

    Het doel van de studie is het verschaffen van inzicht in de effecten van e-commerce in de Nederlandse banksector. Elektronische transactie omgevingen als zodanig zijn niet nieuw voor banken, en financiële dienstverlening heeft altijd al te maken gehad met intermediëring door elektronische netwerken.

  4. 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…

  5. Scientific Workflows and the Sensor Web for Virtual Environmental Observatories

    Science.gov (United States)

    Simonis, I.; Vahed, A.

    2008-12-01

    Virtual observatories mature from their original domain and become common practice for earth observation research and policy building. The term Virtual Observatory originally came from the astronomical research community. Here, virtual observatories provide universal access to the available astronomical data archives of space and ground-based observatories. Further on, as those virtual observatories aim at integrating heterogeneous ressources provided by a number of participating organizations, the virtual observatory acts as a coordinating entity that strives for common data analysis techniques and tools based on common standards. The Sensor Web is on its way to become one of the major virtual observatories outside of the astronomical research community. Like the original observatory that consists of a number of telescopes, each observing a specific part of the wave spectrum and with a collection of astronomical instruments, the Sensor Web provides a multi-eyes perspective on the current, past, as well as future situation of our planet and its surrounding spheres. The current view of the Sensor Web is that of a single worldwide collaborative, coherent, consistent and consolidated sensor data collection, fusion and distribution system. The Sensor Web can perform as an extensive monitoring and sensing system that provides timely, comprehensive, continuous and multi-mode observations. This technology is key to monitoring and understanding our natural environment, including key areas such as climate change, biodiversity, or natural disasters on local, regional, and global scales. The Sensor Web concept has been well established with ongoing global research and deployment of Sensor Web middleware and standards and represents the foundation layer of systems like the Global Earth Observation System of Systems (GEOSS). The Sensor Web consists of a huge variety of physical and virtual sensors as well as observational data, made available on the Internet at standardized

  6. Flow Webs: Mechanism and Architecture for the Implementation of Sensor Webs

    Science.gov (United States)

    Gorlick, M. M.; Peng, G. S.; Gasster, S. D.; McAtee, M. D.

    2006-12-01

    -time demands. Flows are the connective tissue of flow webs—massive computational engines organized as directed graphs whose nodes are semi-autonomous components and whose edges are flows. The individual components of a flow web may themselves be encapsulated flow webs. In other words, a flow web subgraph may be presented to a yet larger flow web as a single, seamless component. Flow webs, at all levels, may be edited and modified while still executing. Within a flow web individual components may be added, removed, started, paused, halted, reparameterized, or inspected. The topology of a flow web may be changed at will. Thus, flow webs exhibit an extraordinary degree of adaptivity and robustness as they are explicitly designed to be modified on the fly, an attribute well suited for dynamic model interactions in sensor webs. We describe our concept for a sensor web, implemented as a flow web, in the context of a wildfire disaster management system for the southern California region. Comprehensive wildfire management requires cooperation among multiple agencies. Flow webs allow agencies to share resources in exactly the manner they choose. We will explain how to employ flow webs and agents to integrate satellite remote sensing data, models, in-situ sensors, UAVs and other resources into a sensor web that interconnects organizations and their disaster management tools in a manner that simultaneously preserves their independence and builds upon the individual strengths of agency-specific models and data sources.

  7. FindZebra: a search engine for rare diseases.

    Science.gov (United States)

    Dragusin, Radu; Petcu, Paula; Lioma, Christina; Larsen, Birger; Jørgensen, Henrik L; Cox, Ingemar J; Hansen, Lars Kai; Ingwersen, Peter; Winther, Ole

    2013-06-01

    The web has become a primary information resource about illnesses and treatments for both medical and non-medical users. Standard web search is by far the most common interface to this information. It is therefore of interest to find out how well web search engines work for diagnostic queries and what factors contribute to successes and failures. Among diseases, rare (or orphan) diseases represent an especially challenging and thus interesting class to diagnose as each is rare, diverse in symptoms and usually has scattered resources associated with it. We design an evaluation approach for web search engines for rare disease diagnosis which includes 56 real life diagnostic cases, performance measures, information resources and guidelines for customising Google Search to this task. In addition, we introduce FindZebra, a specialized (vertical) rare disease search engine. FindZebra is powered by open source search technology and uses curated freely available online medical information. FindZebra outperforms Google Search in both default set-up and customised to the resources used by FindZebra. We extend FindZebra with specialized functionalities exploiting medical ontological information and UMLS medical concepts to demonstrate different ways of displaying the retrieved results to medical experts. Our results indicate that a specialized search engine can improve the diagnostic quality without compromising the ease of use of the currently widely popular standard web search. The proposed evaluation approach can be valuable for future development and benchmarking. The FindZebra search engine is available at http://www.findzebra.com/. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  8. Wind Ressources in Complex Terrain investigated with Synchronized Lidar Measurements

    Science.gov (United States)

    Mann, J.; Menke, R.; Vasiljevic, N.

    2017-12-01

    The Perdigao experiment was performed by a number of European and American universities in Portugal 2017, and it is probably the largest field campaign focussing on wind energy ressources in complex terrain ever conducted. 186 sonic anemometers on 50 masts, 20 scanning wind lidars and a host of other instruments were deployed. The experiment is a part of an effort to make a new European wind atlas. In this presentation we investigate whether scanning the wind speed over ridges in this complex terrain with multiple Doppler lidars can lead to an efficient mapping of the wind resources at relevant positions. We do that by having pairs of Doppler lidars scanning 80 m above the ridges in Perdigao. We compare wind resources obtained from the lidars and from the mast-mounted sonic anemometers at 80 m on two 100 m masts, one on each of the two ridges. In addition, the scanning lidar measurements are also compared to profiling lidars on the ridges. We take into account the fact that the profiling lidars may be biased due to the curvature of the streamlines over the instrument, see Bingol et al, Meteorolog. Z. vol. 18, pp. 189-195 (2009). We also investigate the impact of interruptions of the lidar measurements on the estimated wind resource. We calculate the relative differences of wind along the ridge from the lidar measurements and compare those to the same obtained from various micro-scale models. A particular subject investigated is how stability affects the wind resources. We often observe internal gravity waves with the scanning lidars during the night and we quantify how these affect the relative wind speed on the ridges.

  9. ONI-Asia - censure et surveillance numériques | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La censure et la surveillance numériques, celles des communications par ... qui vise à mieux comprendre les aspects techniques et sociaux de la censure et de la ... Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à ...

  10. Study on online community user motif using web usage mining

    Science.gov (United States)

    Alphy, Meera; Sharma, Ajay

    2016-04-01

    The Web usage mining is the application of data mining, which is used to extract useful information from the online community. The World Wide Web contains at least 4.73 billion pages according to Indexed Web and it contains at least 228.52 million pages according Dutch Indexed web on 6th august 2015, Thursday. It’s difficult to get needed data from these billions of web pages in World Wide Web. Here is the importance of web usage mining. Personalizing the search engine helps the web user to identify the most used data in an easy way. It reduces the time consumption; automatic site search and automatic restore the useful sites. This study represents the old techniques to latest techniques used in pattern discovery and analysis in web usage mining from 1996 to 2015. Analyzing user motif helps in the improvement of business, e-commerce, personalisation and improvement of websites.

  11. Noise and Vibration Risk Prevention Virtual Web for Ubiquitous Training

    Science.gov (United States)

    Redel-Macías, María Dolores; Cubero-Atienza, Antonio J.; Martínez-Valle, José Miguel; Pedrós-Pérez, Gerardo; del Pilar Martínez-Jiménez, María

    2015-01-01

    This paper describes a new Web portal offering experimental labs for ubiquitous training of university engineering students in work-related risk prevention. The Web-accessible computer program simulates the noise and machine vibrations met in the work environment, in a series of virtual laboratories that mimic an actual laboratory and provide the…

  12. L'emploi de normes et standards efficaces dans l'organisation, la structuration et la diffusion de ressources pédagogiques : les exemples français

    OpenAIRE

    Delmotte , Stéphanie

    2008-01-01

    International audience; Il s'agit actuellement de mettre en place, en Algérie, des conditions optimales pour la production de ressources numériques de qualité pour la diffusion du savoir en ligne, dans un domaine particulier : l'enseignement du berbère dans le cadre d'une revalorisation de cette langue et de sa culture. La langue nationale tamazight, son enseignement et sa normalisation/standardisation constituent un champ d'intérêt et de recherche scientifique à part entière. Ces conditions ...

  13. Analysis of Web Spam for Non-English Content: Toward More Effective Language-Based Classifiers.

    Directory of Open Access Journals (Sweden)

    Mansour Alsaleh

    Full Text Available Web spammers aim to obtain higher ranks for their web pages by including spam contents that deceive search engines in order to include their pages in search results even when they are not related to the search terms. Search engines continue to develop new web spam detection mechanisms, but spammers also aim to improve their tools to evade detection. In this study, we first explore the effect of the page language on spam detection features and we demonstrate how the best set of detection features varies according to the page language. We also study the performance of Google Penguin, a newly developed anti-web spamming technique for their search engine. Using spam pages in Arabic as a case study, we show that unlike similar English pages, Google anti-spamming techniques are ineffective against a high proportion of Arabic spam pages. We then explore multiple detection features for spam pages to identify an appropriate set of features that yields a high detection accuracy compared with the integrated Google Penguin technique. In order to build and evaluate our classifier, as well as to help researchers to conduct consistent measurement studies, we collected and manually labeled a corpus of Arabic web pages, including both benign and spam pages. Furthermore, we developed a browser plug-in that utilizes our classifier to warn users about spam pages after clicking on a URL and by filtering out search engine results. Using Google Penguin as a benchmark, we provide an illustrative example to show that language-based web spam classifiers are more effective for capturing spam contents.

  14. A systematic framework to discover pattern for web spam classification

    OpenAIRE

    Jelodar, Hamed; Wang, Yongli; Yuan, Chi; Jiang, Xiaohui

    2017-01-01

    Web spam is a big problem for search engine users in World Wide Web. They use deceptive techniques to achieve high rankings. Although many researchers have presented the different approach for classification and web spam detection still it is an open issue in computer science. Analyzing and evaluating these websites can be an effective step for discovering and categorizing the features of these websites. There are several methods and algorithms for detecting those websites, such as decision t...

  15. Modelo de web semántica para universidades

    Directory of Open Access Journals (Sweden)

    Karla Abad

    2015-12-01

    Full Text Available A raíz del estudio de estado actual de micrositios y repositorios en la Universidad Estatal Península de Santa Elena se encontró que su información carecía de semántica óptima y adecuada. Bajo estas circunstancias, se plantea entonces la necesidad de crear un modelo de estructura de web semántica para Universidades, el cual posteriormente fue aplicado a micrositios y repositorio digital de la UPSE, como caso de prueba. Parte de este proyecto incluye la instalación de módulos de software con sus respectivas configuraciones y la utilización de estándares de metadatos como DUBLIN CORE, para la mejora del SEO (optimización en motores de búsqueda; con ello se ha logrado la generación de metadatos estandarizados y la creación de políticas para la subida de información. El uso de metadatos transforma datos simples en estructuras bien organizadas que aportan información y conocimiento para generar resultados en buscadores web. Al culminar la implementación del modelo de web semántica es posible decir que la universidad ha mejorado su presencia y visibilidad en la web a través del indexamiento de información en diferentes motores de búsqueda y posicionamiento en la categorización de universidades y de repositorios de Webometrics (ranking que proporciona clasificación de universidades de todo el mundo.   Abstract After examining the current microsites and repositories situation in University, Peninsula of Santa Elena´s, it was found that information lacked optimal and appropriate semantic. Under these circumstances, there is a need to create a semantic web structure model for Universities, which was subsequently applied to UPSE´s microsites and digital repositories, as a test study case. Part of this project includes the installation of software modules with their respective configurations and the use of metadata standards such as DUBLIN CORE, to improve the SEO (Search Engine Optimization; with these applications, it was

  16. Identify Web-page Content meaning using Knowledge based System for Dual Meaning Words

    OpenAIRE

    Sinha, Sukanta; Dattagupta, Rana; Mukhopadhyay, Debajyoti

    2012-01-01

    Meaning of Web-page content plays a big role while produced a search result from a search engine. Most of the cases Web-page meaning stored in title or meta-tag area but those meanings do not always match with Web-page content. To overcome this situation we need to go through the Web-page content to identify the Web-page meaning. In such cases, where Webpage content holds dual meaning words that time it is really difficult to identify the meaning of the Web-page. In this paper, we are introdu...

  17. Le nouveau site Web facilitera l'enregistrement des événements ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ESEC) dans les pays en développement nécessite une mise en commun des connaissances, des conseils d'expert, des ressources pratiques et du soutien. Le Centre d'excellence sur les systèmes ESEC est heureux de ...

  18. Shear Behavior of Corrugated Steel Webs in H Shape Bridge Girders

    Directory of Open Access Journals (Sweden)

    Qi Cao

    2015-01-01

    Full Text Available In bridge engineering, girders with corrugated steel webs have shown good mechanical properties. With the promotion of composite bridge with corrugated steel webs, in particular steel-concrete composite girder bridge with corrugated steel webs, it is necessary to study the shear performance and buckling of the corrugated webs. In this research, by conducting experiment incorporated with finite element analysis, the stability of H shape beam welded with corrugated webs was tested and three failure modes were observed. Structural data including load-deflection, load-strain, and shear capacity of tested beam specimens were collected and compared with FEM analytical results by ANSYS software. The effects of web thickness, corrugation, and stiffening on shear capacity of corrugated webs were further discussed.

  19. A review of the reporting of web searching to identify studies for Cochrane systematic reviews.

    Science.gov (United States)

    Briscoe, Simon

    2018-03-01

    The literature searches that are used to identify studies for inclusion in a systematic review should be comprehensively reported. This ensures that the literature searches are transparent and reproducible, which is important for assessing the strengths and weaknesses of a systematic review and re-running the literature searches when conducting an update review. Web searching using search engines and the websites of topically relevant organisations is sometimes used as a supplementary literature search method. Previous research has shown that the reporting of web searching in systematic reviews often lacks important details and is thus not transparent or reproducible. Useful details to report about web searching include the name of the search engine or website, the URL, the date searched, the search strategy, and the number of results. This study reviews the reporting of web searching to identify studies for Cochrane systematic reviews published in the 6-month period August 2016 to January 2017 (n = 423). Of these reviews, 61 reviews reported using web searching using a search engine or website as a literature search method. In the majority of reviews, the reporting of web searching was found to lack essential detail for ensuring transparency and reproducibility, such as the search terms. Recommendations are made on how to improve the reporting of web searching in Cochrane systematic reviews. Copyright © 2017 John Wiley & Sons, Ltd.

  20. Blending vertical and web results: A case study using video intent

    NARCIS (Netherlands)

    Lefortier, D.; Serdyukov, P.; Romanenko, F.; de Rijke, M.; de Rijke, M.; Kenter, T.; de Vries, A.P.; Zhai, C.X.; de Jong, F.; Radinsky, K.; Hofmann, K.

    2014-01-01

    Modern search engines aggregate results from specialized verticals into the Web search results. We study a setting where vertical and Web results are blended into a single result list, a setting that has not been studied before. We focus on video intent and present a detailed observational study of

  1. The Number of Scholarly Documents on the Public Web

    Science.gov (United States)

    Khabsa, Madian; Giles, C. Lee

    2014-01-01

    The number of scholarly documents available on the web is estimated using capture/recapture methods by studying the coverage of two major academic search engines: Google Scholar and Microsoft Academic Search. Our estimates show that at least 114 million English-language scholarly documents are accessible on the web, of which Google Scholar has nearly 100 million. Of these, we estimate that at least 27 million (24%) are freely available since they do not require a subscription or payment of any kind. In addition, at a finer scale, we also estimate the number of scholarly documents on the web for fifteen fields: Agricultural Science, Arts and Humanities, Biology, Chemistry, Computer Science, Economics and Business, Engineering, Environmental Sciences, Geosciences, Material Science, Mathematics, Medicine, Physics, Social Sciences, and Multidisciplinary, as defined by Microsoft Academic Search. In addition, we show that among these fields the percentage of documents defined as freely available varies significantly, i.e., from 12 to 50%. PMID:24817403

  2. The number of scholarly documents on the public web.

    Directory of Open Access Journals (Sweden)

    Madian Khabsa

    Full Text Available The number of scholarly documents available on the web is estimated using capture/recapture methods by studying the coverage of two major academic search engines: Google Scholar and Microsoft Academic Search. Our estimates show that at least 114 million English-language scholarly documents are accessible on the web, of which Google Scholar has nearly 100 million. Of these, we estimate that at least 27 million (24% are freely available since they do not require a subscription or payment of any kind. In addition, at a finer scale, we also estimate the number of scholarly documents on the web for fifteen fields: Agricultural Science, Arts and Humanities, Biology, Chemistry, Computer Science, Economics and Business, Engineering, Environmental Sciences, Geosciences, Material Science, Mathematics, Medicine, Physics, Social Sciences, and Multidisciplinary, as defined by Microsoft Academic Search. In addition, we show that among these fields the percentage of documents defined as freely available varies significantly, i.e., from 12 to 50%.

  3. The number of scholarly documents on the public web.

    Science.gov (United States)

    Khabsa, Madian; Giles, C Lee

    2014-01-01

    The number of scholarly documents available on the web is estimated using capture/recapture methods by studying the coverage of two major academic search engines: Google Scholar and Microsoft Academic Search. Our estimates show that at least 114 million English-language scholarly documents are accessible on the web, of which Google Scholar has nearly 100 million. Of these, we estimate that at least 27 million (24%) are freely available since they do not require a subscription or payment of any kind. In addition, at a finer scale, we also estimate the number of scholarly documents on the web for fifteen fields: Agricultural Science, Arts and Humanities, Biology, Chemistry, Computer Science, Economics and Business, Engineering, Environmental Sciences, Geosciences, Material Science, Mathematics, Medicine, Physics, Social Sciences, and Multidisciplinary, as defined by Microsoft Academic Search. In addition, we show that among these fields the percentage of documents defined as freely available varies significantly, i.e., from 12 to 50%.

  4. Comparative analysis of some search engines

    Directory of Open Access Journals (Sweden)

    Taiwo O. Edosomwan

    2010-10-01

    Full Text Available We compared the information retrieval performances of some popular search engines (namely, Google, Yahoo, AlltheWeb, Gigablast, Zworks and AltaVista and Bing/MSN in response to a list of ten queries, varying in complexity. These queries were run on each search engine and the precision and response time of the retrieved results were recorded. The first ten documents on each retrieval output were evaluated as being ‘relevant’ or ‘non-relevant’ for evaluation of the search engine’s precision. To evaluate response time, normalised recall ratios were calculated at various cut-off points for each query and search engine. This study shows that Google appears to be the best search engine in terms of both average precision (70% and average response time (2 s. Gigablast and AlltheWeb performed the worst overall in this study.

  5. An open-source, mobile-friendly search engine for public medical knowledge.

    Science.gov (United States)

    Samwald, Matthias; Hanbury, Allan

    2014-01-01

    The World Wide Web has become an important source of information for medical practitioners. To complement the capabilities of currently available web search engines we developed FindMeEvidence, an open-source, mobile-friendly medical search engine. In a preliminary evaluation, the quality of results from FindMeEvidence proved to be competitive with those from TRIP Database, an established, closed-source search engine for evidence-based medicine.

  6. Discovery and Selection of Semantic Web Services

    CERN Document Server

    Wang, Xia

    2013-01-01

    For advanced web search engines to be able not only to search for semantically related information dispersed over different web pages, but also for semantic services providing certain functionalities, discovering semantic services is the key issue. Addressing four problems of current solution, this book presents the following contributions. A novel service model independent of semantic service description models is proposed, which clearly defines all elements necessary for service discovery and selection. It takes service selection as its gist and improves efficiency. Corresponding selection algorithms and their implementation as components of the extended Semantically Enabled Service-oriented Architecture in the Web Service Modeling Environment are detailed. Many applications of semantic web services, e.g. discovery, composition and mediation, can benefit from a general approach for building application ontologies. With application ontologies thus built, services are discovered in the same way as with single...

  7. Developing BP-driven web application through the use of MDE techniques

    OpenAIRE

    Torres Bosch, Maria Victoria; Giner Blasco, Pau; Pelechano Ferragud, Vicente

    2012-01-01

    Model driven engineering (MDE) is a suitable approach for performing the construction of software systems (in particular in the Web application domain). There are different types of Web applications depending on their purpose (i.e., document-centric, interactive, transactional, workflow/business process-based, collaborative, etc). This work focusses on business process-based Web applications in order to be able to understand business processes in a broad sense, from the lightweight business p...

  8. Clinical software development for the Web: lessons learned from the BOADICEA project.

    Science.gov (United States)

    Cunningham, Alex P; Antoniou, Antonis C; Easton, Douglas F

    2012-04-10

    In the past 20 years, society has witnessed the following landmark scientific advances: (i) the sequencing of the human genome, (ii) the distribution of software by the open source movement, and (iii) the invention of the World Wide Web. Together, these advances have provided a new impetus for clinical software development: developers now translate the products of human genomic research into clinical software tools; they use open-source programs to build them; and they use the Web to deliver them. Whilst this open-source component-based approach has undoubtedly made clinical software development easier, clinical software projects are still hampered by problems that traditionally accompany the software process. This study describes the development of the BOADICEA Web Application, a computer program used by clinical geneticists to assess risks to patients with a family history of breast and ovarian cancer. The key challenge of the BOADICEA Web Application project was to deliver a program that was safe, secure and easy for healthcare professionals to use. We focus on the software process, problems faced, and lessons learned. Our key objectives are: (i) to highlight key clinical software development issues; (ii) to demonstrate how software engineering tools and techniques can facilitate clinical software development for the benefit of individuals who lack software engineering expertise; and (iii) to provide a clinical software development case report that can be used as a basis for discussion at the start of future projects. We developed the BOADICEA Web Application using an evolutionary software process. Our approach to Web implementation was conservative and we used conventional software engineering tools and techniques. The principal software development activities were: requirements, design, implementation, testing, documentation and maintenance. The BOADICEA Web Application has now been widely adopted by clinical geneticists and researchers. BOADICEA Web

  9. Millennial Undergraduate Research Strategies in Web and Library Information Retrieval Systems

    Science.gov (United States)

    Porter, Brandi

    2011-01-01

    This article summarizes the author's dissertation regarding search strategies of millennial undergraduate students in Web and library online information retrieval systems. Millennials bring a unique set of search characteristics and strategies to their research since they have never known a world without the Web. Through the use of search engines,…

  10. Teen smoking cessation help via the Internet: a survey of search engines.

    Science.gov (United States)

    Edwards, Christine C; Elliott, Sean P; Conway, Terry L; Woodruff, Susan I

    2003-07-01

    The objective of this study was to assess Web sites related to teen smoking cessation on the Internet. Seven Internet search engines were searched using the keywords teen quit smoking. The top 20 hits from each search engine were reviewed and categorized. The keywords teen quit smoking produced between 35 and 400,000 hits depending on the search engine. Of 140 potential hits, 62% were active, unique sites; 85% were listed by only one search engine; and 40% focused on cessation. Findings suggest that legitimate on-line smoking cessation help for teens is constrained by search engine choice and the amount of time teens spend looking through potential sites. Resource listings should be updated regularly. Smoking cessation Web sites need to be picked up on multiple search engine searches. Further evaluation of smoking cessation Web sites need to be conducted to identify the most effective help for teens.

  11. La ingeniería de requisitos una base fundamental para el desarrollo de proyectos de TI en la web.

    Directory of Open Access Journals (Sweden)

    Edwin Mejía

    2015-12-01

    Computer systems based on the web have grown to very large steps. The web over time has become a place to locate important documents of the institutions and lead to large volumes of information and education market banking organization level. The web-based systems since its inception wrapped all this systematization to solve business problems they had, but without using any methodology for building them. Therefore, this article is a brief introduction to the Web applications, methodologies to build such applications, requirements engineering web applications, the techniques used for data collection and the serious problems that have passed several web applications focusing on requirements engineering as the linchpin in the development of software projects.

  12. Patrimoine et territoire, les nouvelles ressources du développement

    Directory of Open Access Journals (Sweden)

    Pierre-Antoine Landel

    2009-01-01

    Full Text Available La démarche présentée ici s'inscrit dans le cadre théorique actuellement travaillé autour de la notion de ressource territoriale. Elle propose une relecture des différents travaux engagés sur cette notion, tente d'y apporter quelques éléments complémentaires et confronte ces propositions théoriques à une première analyse des dossiers déposés par les 342 territoires ayant répondu à l'appel à projet Pôles d'excellence rurale lancé par la Diact en décembre 2005. L’analyse des projets de développement permet au final de proposer une interprétation de la notion de développement durable. Plutôt que de constituer une notion autonome, il s’agirait en fait d’une forme intermédiaire entre un mode de développement productiviste et un mode de développement que nous qualifions de patrimonial.The initiative proposed here joins in the theoretical frame at present worked around the notion of territorial resource. It proposes a second reading of the various works engaged on this notion, tries to bring it some additional elements and confronts these theoretical propositions with a first analysis of the files deposited by the 342 territories having answered the call to project "Pôles d'excellence rurale" launched by the Interministerial Delegation for Territorial Planning and Competitiveness (DIACT in December, 2005. The analysis of the projects of development, allows in the end to propose an interpretation of the notion of sustainable development. Rather than to constitute an autonomous notion, it would be in fact about an intermediate between a productivist mode of development and a mode of development which we consider as patrimonial.

  13. Final Technical Report and management: NUCLEAR ENGINEERING RECRUITMENT EFFORT

    International Nuclear Information System (INIS)

    Kerrick, Sharon S.; Vincent, Charles D.

    2007-01-01

    This report provides the summary of a project whose purpose was to support the costs of developing a nuclear engineering awareness program, an instruction program for teachers to integrate lessons on nuclear science and technology into their existing curricula, and web sites for the exchange of nuclear engineering career information and classroom materials. The specific objectives of the program were as follows: Objective 1--Increase awareness and interest of nuclear engineering; Objective 2--Instruct Teachers on nuclear topics; Objective 3--Nuclear education programs web-site; Objective 4--Support to university/industry matching grants and reactor sharing; Objective 5--Pilot project; and Objective 6--Nuclear engineering enrollment survey at universities

  14. Electrochromic properties of polyaniline-coated fiber webs for tissue engineering applications.

    Science.gov (United States)

    Beregoi, Mihaela; Busuioc, Cristina; Evanghelidis, Alexandru; Matei, Elena; Iordache, Florin; Radu, Mihaela; Dinischiotu, Anca; Enculescu, Ionut

    2016-08-30

    By combining the electrospinning method advantages (high surface-to-volume ratio, controlled morphology, varied composition and flexibility for the resulting structures) with the electrical activity of polyaniline, a new core-shell-type material with potential applications in the field of artificial muscles was synthesized. Thus, a poly(methylmethacrylate) solution was electrospun in optimized conditions to obtain randomly oriented polymer fiber webs. Further, a gold layer was sputtered on their surface in order to make them conductive and improve the mechanical properties. The metalized fiber webs were then covered with a PANI layer by in situ electrochemical polymerization starting from aniline and using sulphuric acid as oxidizing agent. By applying a small voltage on PANI-coated fiber webs in the presence of an electrolyte, the oxidation state of PANI changes, which is followed by the device color modification. The morphological, electrical and biological properties of the resulting multilayered material were also investigated. Copyright © 2015 Elsevier B.V. All rights reserved.

  15. Engineering web maps with gradual content zoom based on streaming vector data

    Science.gov (United States)

    Huang, Lina; Meijers, Martijn; Šuba, Radan; van Oosterom, Peter

    2016-04-01

    Vario-scale data structures have been designed to support gradual content zoom and the progressive transfer of vector data, for use with arbitrary map scales. The focus to date has been on the server side, especially on how to convert geographic data into the proposed vario-scale structures by means of automated generalisation. This paper contributes to the ongoing vario-scale research by focusing on the client side and communication, particularly on how this works in a web-services setting. It is claimed that these functionalities are urgently needed, as many web-based applications, both desktop and mobile, require gradual content zoom, progressive transfer and a high performance level. The web-client prototypes developed in this paper make it possible to assess the behaviour of vario-scale data and to determine how users will actually see the interactions. Several different options of web-services communication architectures are possible in a vario-scale setting. These options are analysed and tested with various web-client prototypes, with respect to functionality, ease of implementation and performance (amount of transmitted data and response times). We show that the vario-scale data structure can fit in with current web-based architectures and efforts to standardise map distribution on the internet. However, to maximise the benefits of vario-scale data, a client needs to be aware of this structure. When a client needs a map to be refined (by means of a gradual content zoom operation), only the 'missing' data will be requested. This data will be sent incrementally to the client from a server. In this way, the amount of data transferred at one time is reduced, shortening the transmission time. In addition to these conceptual architecture aspects, there are many implementation and tooling design decisions at play. These will also be elaborated on in this paper. Based on the experiments conducted, we conclude that the vario-scale approach indeed supports gradual

  16. Spiders and Worms and Crawlers, Oh My: Searching on the World Wide Web.

    Science.gov (United States)

    Eagan, Ann; Bender, Laura

    Searching on the world wide web can be confusing. A myriad of search engines exist, often with little or no documentation, and many of these search engines work differently from the standard search engines people are accustomed to using. Intended for librarians, this paper defines search engines, directories, spiders, and robots, and covers basics…

  17. Resource quantity and quality determine the inter-specific associations between ecosystem engineers and resource users in a cavity-nest web.

    Science.gov (United States)

    Robles, Hugo; Martin, Kathy

    2013-01-01

    While ecosystem engineering is a widespread structural force of ecological communities, the mechanisms underlying the inter-specific associations between ecosystem engineers and resource users are poorly understood. A proper knowledge of these mechanisms is, however, essential to understand how communities are structured. Previous studies suggest that increasing the quantity of resources provided by ecosystem engineers enhances populations of resource users. In a long-term study (1995-2011), we show that the quality of the resources (i.e. tree cavities) provided by ecosystem engineers is also a key feature that explains the inter-specific associations in a tree cavity-nest web. Red-naped sapsuckers (Sphyrapicusnuchalis) provided the most abundant cavities (52% of cavities, 0.49 cavities/ha). These cavities were less likely to be used than other cavity types by mountain bluebirds (Sialiacurrucoides), but provided numerous nest-sites (41% of nesting cavities) to tree swallows (Tachycinetabicolour). Swallows experienced low reproductive outputs in northern flicker (Colaptesauratus) cavities compared to those in sapsucker cavities (1.1 vs. 2.1 fledglings/nest), but the highly abundant flickers (33% of cavities, 0.25 cavities/ha) provided numerous suitable nest-sites for bluebirds (58%). The relative shortage of cavities supplied by hairy woodpeckers (Picoidesvillosus) and fungal/insect decay (high quality nest-sites for both bluebirds and swallows. Because both the quantity and quality of resources supplied by different ecosystem engineers may explain the amount of resources used by each resource user, conservation strategies may require different management actions to be implemented for the key ecosystem engineer of each resource user. We, therefore, urge the incorporation of both resource quantity and quality into models that assess community dynamics to improve conservation actions and our understanding of ecological communities based on ecosystem engineering.

  18. La gestion des ressources humaines peut-elle être un facteur de fidélisation de la clientèle du centre E. Leclerc Casteldis ?

    OpenAIRE

    Laurie Ple

    2010-01-01

    Le secteur de la grande distribution est un domaine passionnant par son histoire, son évolution et sa place au cœur de nombreuses mutations de notre société. L'explorer à travers la gestion des ressources humaines est tout de suite paru attirant. Étant donné que la grande distribution évolue dans un contexte de plus en plus compétitif, la fidélisation de la clientèle est devenue un de ses grands enjeux. La grande distribution a développé des outils de fidélisation, mais ils sont largement rep...

  19. Improving Web Page Retrieval using Search Context from Clicked Domain Names

    NARCIS (Netherlands)

    Li, R.

    Search context is a crucial factor that helps to understand a user’s information need in ad-hoc Web page retrieval. A query log of a search engine contains rich information on issued queries and their corresponding clicked Web pages. The clicked data implies its relevance to the query and can be

  20. A Longitudinal Analysis of Search Engine Index Size

    DEFF Research Database (Denmark)

    Van den Bosch, Antal; Bogers, Toine; De Kunder, Maurice

    2015-01-01

    One of the determining factors of the quality of Web search engines is the size of their index. In addition to its influence on search result quality, the size of the indexed Web can also tell us something about which parts of the WWW are directly accessible to the everyday user. We propose a novel...... method of estimating the size of a Web search engine’s index by extrapolating from document frequencies of words observed in a large static corpus of Web pages. In addition, we provide a unique longitudinal perspective on the size of Google and Bing’s indexes over a nine-year period, from March 2006...... until January 2015. We find that index size estimates of these two search engines tend to vary dramatically over time, with Google generally possessing a larger index than Bing. This result raises doubts about the reliability of previous one-off estimates of the size of the indexed Web. We find...

  1. Children's Search Engines from an Information Search Process Perspective.

    Science.gov (United States)

    Broch, Elana

    2000-01-01

    Describes cognitive and affective characteristics of children and teenagers that may affect their Web searching behavior. Reviews literature on children's searching in online public access catalogs (OPACs) and using digital libraries. Profiles two Web search engines. Discusses some of the difficulties children have searching the Web, in the…

  2. Analyzing Web Server Logs to Improve a Site's Usage. The Systems Librarian

    Science.gov (United States)

    Breeding, Marshall

    2005-01-01

    This column describes ways to streamline and optimize how a Web site works in order to improve both its usability and its visibility. The author explains how to analyze logs and other system data to measure the effectiveness of the Web site design and search engine.

  3. Web の探索行動と情報評価過程の分析

    OpenAIRE

    種市, 淳子; 逸村, 裕; TANEICHI, Junko; ITSUMURA, Hiroshi

    2005-01-01

    In this study, we discussed information seeking behavior on the Web. First, the currentWeb-searching studies are reviewed from the perspective of: (1) Web-searching characteristics; (2) the process model for how users evaluate Web resources. Secondly, we investigated information seeking processes using the Web search engine and online public access catalogue (OPAC) system by undergraduate students, through an experiment and its protocol analysis. The results indicate that: (1) Web-searching p...

  4. Improving web site performance using commercially available analytical tools.

    Science.gov (United States)

    Ogle, James A

    2010-10-01

    It is easy to accurately measure web site usage and to quantify key parameters such as page views, site visits, and more complex variables using commercially available tools that analyze web site log files and search engine use. This information can be used strategically to guide the design or redesign of a web site (templates, look-and-feel, and navigation infrastructure) to improve overall usability. The data can also be used tactically to assess the popularity and use of new pages and modules that are added and to rectify problems that surface. This paper describes software tools used to: (1) inventory search terms that lead to available content; (2) propose synonyms for commonly used search terms; (3) evaluate the effectiveness of calls to action; (4) conduct path analyses to targeted content. The American Academy of Orthopaedic Surgeons (AAOS) uses SurfRay's Behavior Tracking software (Santa Clara CA, USA, and Copenhagen, Denmark) to capture and archive the search terms that have been entered into the site's Google Mini search engine. The AAOS also uses Unica's NetInsight program to analyze its web site log files. These tools provide the AAOS with information that quantifies how well its web sites are operating and insights for making improvements to them. Although it is easy to quantify many aspects of an association's web presence, it also takes human involvement to analyze the results and then recommend changes. Without a dedicated resource to do this, the work often is accomplished only sporadically and on an ad hoc basis.

  5. WEB-IS2: Next Generation Web Services Using Amira Visualization Package

    Science.gov (United States)

    Yang, X.; Wang, Y.; Bollig, E. F.; Kadlec, B. J.; Garbow, Z. A.; Yuen, D. A.; Erlebacher, G.

    2003-12-01

    Amira (www.amiravis.com) is a powerful 3-D visualization package and has been employed recently by the science and engineering communities to gain insight into their data. We present a new web-based interface to Amira, packaged in a Java applet. We have developed a module called WEB-IS/Amira (WEB-IS2), which provides web-based access to Amira. This tool allows earth scientists to manipulate Amira controls remotely and to analyze, render and view large datasets over the internet, without regard for time or location. This could have important ramifications for GRID computing. The design of our implementation will soon allow multiple users to visually collaborate by manipulating a single dataset through a variety of client devices. These clients will only require a browser capable of displaying Java applets. As the deluge of data continues, innovative solutions that maximize ease of use without sacrificing efficiency or flexibility will continue to gain in importance, particularly in the Earth sciences. Major initiatives, such as Earthscope (http://www.earthscope.org), which will generate at least a terabyte of data daily, stand to profit enormously by a system such as WEB-IS/Amira (WEB-IS2). We discuss our use of SOAP (Livingston, D., Advanced SOAP for Web development, Prentice Hall, 2002), a novel 2-way communication protocol, as a means of providing remote commands, and efficient point-to-point transfer of binary image data. We will present our initial experiences with the use of Naradabrokering (www.naradabrokering.org) as a means to decouple clients and servers. Information is submitted to the system as a published item, while it is retrieved through a subscription mechanisms, via what is known as "topics". These topic headers, their contents, and the list of subscribers are automatically tracked by Naradabrokering. This novel approach promises a high degree of fault tolerance, flexibility with respect to client diversity, and language independence for the

  6. WebDMS: A Web-Based Data Management System for Environmental Data

    Science.gov (United States)

    Ekstrand, A. L.; Haderman, M.; Chan, A.; Dye, T.; White, J. E.; Parajon, G.

    2015-12-01

    DMS is an environmental Data Management System to manage, quality-control (QC), summarize, document chain-of-custody, and disseminate data from networks ranging in size from a few sites to thousands of sites, instruments, and sensors. The server-client desktop version of DMS is used by local and regional air quality agencies (including the Bay Area Air Quality Management District, the South Coast Air Quality Management District, and the California Air Resources Board), the EPA's AirNow Program, and the EPA's AirNow-International (AirNow-I) program, which offers countries the ability to run an AirNow-like system. As AirNow's core data processing engine, DMS ingests, QCs, and stores real-time data from over 30,000 active sensors at over 5,280 air quality and meteorological sites from over 130 air quality agencies across the United States. As part of the AirNow-I program, several instances of DMS are deployed in China, Mexico, and Taiwan. The U.S. Department of State's StateAir Program also uses DMS for five regions in China and plans to expand to other countries in the future. Recent development has begun to migrate DMS from an onsite desktop application to WebDMS, a web-based application designed to take advantage of cloud hosting and computing services to increase scalability and lower costs. WebDMS will continue to provide easy-to-use data analysis tools, such as time-series graphs, scatterplots, and wind- or pollution-rose diagrams, as well as allowing data to be exported to external systems such as the EPA's Air Quality System (AQS). WebDMS will also provide new GIS analysis features and a suite of web services through a RESTful web API. These changes will better meet air agency needs and allow for broader national and international use (for example, by the AirNow-I partners). We will talk about the challenges and advantages of migrating DMS to the web, modernizing the DMS user interface, and making it more cost-effective to enhance and maintain over time.

  7. Asset Identification for Security Risk Assessment in Web Applications

    OpenAIRE

    Hisham M. Haddad; Brunil D. Romero

    2009-01-01

    As software applications become more complex they require more security, allowing them to reach an appropriate level of quality to manage information, and therefore achieving business objectives. Web applications represent one segment of software industry where security risk assessment is essential. Web engineering must address new challenges to provide new techniques and tools that guarantee high quality application development. This work focuses asset identification, the initial step in sec...

  8. WILGA Photonics and Web Engineering, January 2012; EuCARD Sessions on HEP and Accelerator Technology

    CERN Document Server

    Romaniuk, R S

    2012-01-01

    Wilga Sessions on HEP experiments and accelerator technology were organized under the umbrella of the EU FP7 Project EuCARD – European Coordination for Accelerator Research and Development. The paper presents a digest of chosen technical work results shown by young researchers from technical universities during the SPIE-IEEE Wilga January 2012 Symposium on Photonics and Web Engineering. Topical tracks of the symposium embraced, among others, new technologies for photonics, sensory and nonlinear optical fibers, object oriented design of hardware, photonic metrology, optoelectronics and photonics applications, photonics-electronics co-design, optoelectronic and electronic systems for astronomy and high energy physics experiments, JET and pi-of-the sky experiments development. The symposium held two times a year is a summary in the development of numerable Ph.D. theses carried out in this country in the area of advanced electronic and photonic systems. It is also a great occasion for SPIE, IEEE, OSA and PSP st...

  9. Le traitement informatisé de ressources électroniques au Service de l'Information Scientifique du CERN

    CERN Document Server

    Pignard, Nathalie; Jerdelet, Jocelyne

    2001-01-01

    Nous présentons une méthode automatique d'importation de données mise en oeuvre au Service de l'Information Scientifique, SIS, du CERN. Ce programme informatique, baptisé Uploader, permet d'importer dans le catalogue de la bibliothèque du CERN des notices bibliographiques et le texte intégral de documents provenant de diverses sources sur Internet. Ces bases de données concernent la littérature grise en physique et dans les disciplines voisines (par exemple DOE, KEK, Math-Doc, TipTop, etc.). Cette politique d'acquisition, qui met en avant le traitement informatisé des ressources électroniques, soulève quelques réflexions sur l'augmentation du nombre de documents collectés et sur l'élargissement des domaines traités. Le souci constant d'enrichir ces données et d'en faciliter l'accès aux utilisateurs, sur un mode hypertextuel, conduit à une évolution des métiers de la gestion documentaire.

  10. Where does it break? or : Why the semantic web is not just "research as usual"

    NARCIS (Netherlands)

    Van Harmelen, Frank

    2006-01-01

    Work on the Semantic Web is all too often phrased as a technological challenge: how to improve the precision of search engines, how to personalise web-sites, how to integrate weakly-structured data-sources, etc. This suggests that we will be able to realise the Semantic Web by merely applying (and

  11. Sharing casting technological data on web site

    Directory of Open Access Journals (Sweden)

    Li Hailan

    2008-11-01

    Full Text Available Based on database and asp.net technologies, a web platform of scientific data in the casting technology fi eld has been developed. This paper presents the relevant data system structure, the approaches to the data collection, the applying methods and policy in data sharing, and depicts the collected and shared data recently fi nished. Statistics showed that there are about 20,000 visitors in China every day visiting the related data through the web, proving that many engineers or other relevant persons are interested in the data.

  12. Usability Evaluation of Public Web Mapping Sites

    Science.gov (United States)

    Wang, C.

    2014-04-01

    Web mapping sites are interactive maps that are accessed via Webpages. With the rapid development of Internet and Geographic Information System (GIS) field, public web mapping sites are not foreign to people. Nowadays, people use these web mapping sites for various reasons, in that increasing maps and related map services of web mapping sites are freely available for end users. Thus, increased users of web mapping sites led to more usability studies. Usability Engineering (UE), for instance, is an approach for analyzing and improving the usability of websites through examining and evaluating an interface. In this research, UE method was employed to explore usability problems of four public web mapping sites, analyze the problems quantitatively and provide guidelines for future design based on the test results. Firstly, the development progress for usability studies were described, and simultaneously several usability evaluation methods such as Usability Engineering (UE), User-Centered Design (UCD) and Human-Computer Interaction (HCI) were generally introduced. Then the method and procedure of experiments for the usability test were presented in detail. In this usability evaluation experiment, four public web mapping sites (Google Maps, Bing maps, Mapquest, Yahoo Maps) were chosen as the testing websites. And 42 people, who having different GIS skills (test users or experts), gender (male or female), age and nationality, participated in this test to complete the several test tasks in different teams. The test comprised three parts: a pretest background information questionnaire, several test tasks for quantitative statistics and progress analysis, and a posttest questionnaire. The pretest and posttest questionnaires focused on gaining the verbal explanation of their actions qualitatively. And the design for test tasks targeted at gathering quantitative data for the errors and problems of the websites. Then, the results mainly from the test part were analyzed. The

  13. Survey of formal and informal citation in Google search engine

    Directory of Open Access Journals (Sweden)

    Afsaneh Teymourikhani

    2016-03-01

    Full Text Available Aim: Informal citations is bibliographic information (title or Internet address, citing sources of information resources for informal scholarly communication and always neglected in traditional citation databases. This study is done, in order to answer the question of whether informal citations in the web environment are traceable. The present research aims to determine what proportion of web citations of Google search engine is related to formal and informal citation. Research method: Webometrics is the method used. The study is done on 1344 research articles of 98 open access journal, and the method that is used to extract the web citation from Google search engine is “Web / URL citation extraction". Findings: The findings showed that ten percent of the web citations of Google search engine are formal and informal citations. The highest formal citation in the Google search engine with 19/27% is in the field of library and information science and the lowest official citation by 1/54% is devoted to the field of civil engineering. The highest percentage of informal citations with 3/57% is devoted to sociology and the lowest percentage of informal citations by 0/39% is devoted to the field of civil engineering. Journal Citation is highest with 94/12% in the surgical field and lowest with 5/26 percent in the philosophy filed. Result: Due to formal and informal citations in the Google search engine which is about 10 percent and the reduction of this amount compared to previous research, it seems that track citations by this engine should be treated with more caution. We see that the amount of formal citation is variable in different disciplines. Cited journals in the field of surgery, is highest and in the filed of philosophy is lowest, this indicates that in the filed of philosophy, that is a subset of the social sciences, journals in scientific communication do not play a significant role. On the other hand, book has a key role in this filed

  14. A fuzzy method for improving the functionality of search engines based on user's web interactions

    Directory of Open Access Journals (Sweden)

    Farzaneh Kabirbeyk

    2015-04-01

    Full Text Available Web mining has been widely used to discover knowledge from various sources in the web. One of the important tools in web mining is mining of web user’s behavior that is considered as a way to discover the potential knowledge of web user’s interaction. Nowadays, Website personalization is regarded as a popular phenomenon among web users and it plays an important role in facilitating user access and provides information of users’ requirements based on their own interests. Extracting important features about web user behavior plays a significant role in web usage mining. Such features are page visit frequency in each session, visit duration, and dates of visiting a certain pages. This paper presents a method to predict user’s interest and to propose a list of pages based on their interests by identifying user’s behavior based on fuzzy techniques called fuzzy clustering method. Due to the user’s different interests and use of one or more interest at a time, user’s interest may belong to several clusters and fuzzy clustering provide a possible overlap. Using the resulted cluster helps extract fuzzy rules. This helps detecting user’s movement pattern and using neural network a list of suggested pages to the users is provided.

  15. How Will Online Affiliate Marketing Networks Impact Search Engine Rankings?

    OpenAIRE

    Janssen, David; Heck, Eric

    2007-01-01

    textabstractIn online affiliate marketing networks advertising web sites offer their affiliates revenues based on provided web site traffic and associated leads and sales. Advertising web sites can have a network of thousands of affiliates providing them with web site traffic through hyperlinks on their web sites. Search engines such as Google, MSN, and Yahoo, consider hyperlinks as a proof of quality and/or reliability of the linked web sites, and therefore use them to determine the relevanc...

  16. Web-based Interactive Simulator for Rotating Machinery.

    Science.gov (United States)

    Sirohi, Vijayalaxmi

    1999-01-01

    Baroma (Balance of Rotating Machinery), the Web-based educational engineering interactive software for teaching/learning combines didactical and software ergonomical approaches. The software in tutorial form simulates a problem using Visual Interactive Simulation in graphic display, and animation is brought about through graphical user interface…

  17. Development and Evaluation of Mechatronics Learning System in a Web-Based Environment

    Science.gov (United States)

    Shyr, Wen-Jye

    2011-01-01

    The development of remote laboratory suitable for the reinforcement of undergraduate level teaching of mechatronics is important. For the reason, a Web-based mechatronics learning system, called the RECOLAB (REmote COntrol LABoratory), for remote learning in engineering education has been developed in this study. The web-based environment is an…

  18. The effect of query complexity on Web searching results

    Directory of Open Access Journals (Sweden)

    B.J. Jansen

    2000-01-01

    Full Text Available This paper presents findings from a study of the effects of query structure on retrieval by Web search services. Fifteen queries were selected from the transaction log of a major Web search service in simple query form with no advanced operators (e.g., Boolean operators, phrase operators, etc. and submitted to 5 major search engines - Alta Vista, Excite, FAST Search, Infoseek, and Northern Light. The results from these queries became the baseline data. The original 15 queries were then modified using the various search operators supported by each of the 5 search engines for a total of 210 queries. Each of these 210 queries was also submitted to the applicable search service. The results obtained were then compared to the baseline results. A total of 2,768 search results were returned by the set of all queries. In general, increasing the complexity of the queries had little effect on the results with a greater than 70% overlap in results, on average. Implications for the design of Web search services and directions for future research are discussed.

  19. INTERFACING GOOGLE SEARCH ENGINE TO CAPTURE USER WEB SEARCH BEHAVIOR

    OpenAIRE

    Fadhilah Mat Yamin; T. Ramayah

    2013-01-01

    The behaviour of the searcher when using the search engine especially during the query formulation is crucial. Search engines capture users’ activities in the search log, which is stored at the search engine server. Due to the difficulty of obtaining this search log, this paper proposed and develops an interface framework to interface a Google search engine. This interface will capture users’ queries before redirect them to Google. The analysis of the search log will show that users are utili...

  20. The Web and Information Literacy: Scaffolding the use of Web Sources in a Project-Based Curriculum

    Science.gov (United States)

    Walton, Marion; Archer, Arlene

    2004-01-01

    In this article we describe and discuss a three-year case study of a course in web literacy, part of the academic literacy curriculum for first-year engineering students at the University of Cape Town (UCT). Because they are seen as practical knowledge, not theoretical, information skills tend to be devalued at university and rendered invisible to…

  1. Web-enabled Data Warehouse and Data Webhouse

    Directory of Open Access Journals (Sweden)

    Cerasela PIRVU

    2008-01-01

    Full Text Available In this paper, our objectives are to understanding what data warehouse means examine the reasons for doing so, appreciate the implications of the convergence of Web technologies and those of the data warehouse and examine the steps for building a Web-enabled data warehouse. The web revolution has propelled the data warehouse out onto the main stage, because in many situations the data warehouse must be the engine that controls or analysis the web experience. In order to step up to this new responsibility, the data warehouse must adjust. The nature of the data warehouse needs to be somewhat different. As a result, our data warehouses are becoming data webhouses. The data warehouse is becoming the infrastructure that supports customer relationship management (CRM. And the data warehouse is being asked to make the customer clickstream available for analysis. This rebirth of data warehousing architecture is called the data webhouse.

  2. Use of Web Search Engines and Personalisation in Information Searching for Educational Purposes

    Science.gov (United States)

    Salehi, Sara; Du, Jia Tina; Ashman, Helen

    2018-01-01

    Introduction: Students increasingly depend on Web search for educational purposes. This causes concerns among education providers as some evidence indicates that in higher education, the disadvantages of Web search and personalised information are not justified by the benefits. Method: One hundred and twenty university students were surveyed about…

  3. How Can We Educate Students on the Web Engineering Discipline via the Web? The NTUA's Approach.

    NARCIS (Netherlands)

    Retalis, Symeon; Avgeriou, Paris; Skordalakis, Manolis

    2000-01-01

    Over the last years the Web has been increasingly used as a platform for supporting the delivery of flexible and interactive hypermedia applications. However, it is admitted that the dominant approach is ad hoc development. Developers should be educated in the use of effective processes, process

  4. Model Driven Engineering

    Science.gov (United States)

    Gaševic, Dragan; Djuric, Dragan; Devedžic, Vladan

    A relevant initiative from the software engineering community called Model Driven Engineering (MDE) is being developed in parallel with the Semantic Web (Mellor et al. 2003a). The MDE approach to software development suggests that one should first develop a model of the system under study, which is then transformed into the real thing (i.e., an executable software entity). The most important research initiative in this area is the Model Driven Architecture (MDA), which is Model Driven Architecture being developed under the umbrella of the Object Management Group (OMG). This chapter describes the basic concepts of this software engineering effort.

  5. Semantic web for the working ontologist effective modeling in RDFS and OWL

    CERN Document Server

    Allemang, Dean

    2011-01-01

    Semantic Web models and technologies provide information in machine-readable languages that enable computers to access the Web more intelligently and perform tasks automatically without the direction of users. These technologies are relatively recent and advancing rapidly, creating a set of unique challenges for those developing applications. Semantic Web for the Working Ontologist is the essential, comprehensive resource on semantic modeling, for practitioners in health care, artificial intelligence, finance, engineering, military intelligence, enterprise architecture, and more. Focused on

  6. Information Retrieval for Education: Making Search Engines Language Aware

    Science.gov (United States)

    Ott, Niels; Meurers, Detmar

    2010-01-01

    Search engines have been a major factor in making the web the successful and widely used information source it is today. Generally speaking, they make it possible to retrieve web pages on a topic specified by the keywords entered by the user. Yet web searching currently does not take into account which of the search results are comprehensible for…

  7. TECHNIQUES USED IN SEARCH ENGINE MARKETING

    OpenAIRE

    Assoc. Prof. Liviu Ion Ciora Ph. D; Lect. Ion Buligiu Ph. D

    2010-01-01

    Search engine marketing (SEM) is a generic term covering a variety of marketing techniques intended for attracting web traffic in search engines and directories. SEM is a popular tool since it has the potential of substantial gains with minimum investment. On the one side, most search engines and directories offer free or extremely cheap listing. On the other side, the traffic coming from search engines and directories tends to be motivated for acquisitions, making these visitors some of the ...

  8. Création et utilisation de ressources pédagogiques sur support numérique pour l'apprentissage d'une L2 : quelles compétences pour l'enseignant ? Designing and using digital learning resources for second language acquisition: what skills do teachers need?

    Directory of Open Access Journals (Sweden)

    Paul Arthaud

    2006-11-01

    Full Text Available À l'Université de Technologie de Belfort-Montbéliard, des ressources pédagogiques sur support numérique ont été créées afin d'être intégrées au dispositif d'enseignement d'une UV d'anglais destinée à des élèves-ingénieurs. Dans le cadre d'une recherche-action, la nature et la fonction de ces ressources ont été établies à la lumière de connaissances théoriques, et les effets de leur intégration ont fait l'objet de mesures. Cet article se concentre sur les compétences qui ont été requises pour mettre en place ces ressources : compétences dans les domaines de la didactique des langues et de la création de pages HTML. Une ébauche de référentiel métier est proposée. Même si les résultats de cette expérience semblent positifs, la question demeure de savoir s'il est possible d'être en même temps enseignant et concepteur de ressources sur support numérique. Des éléments de réponse se trouvent peut-être davantage du côté de la gestion du temps, de la motivation et des savoir-faire relationnels que du seul côté des compétences informatiques. Cette expérience n'a nullement pour vocation de fixer les règles d'un exemple à suivre. Néanmoins, elle illustre le fait que la recherche-action peut être un moyen efficace de canaliser la diversité des motivations des enseignants impliqués dans des démarches innovantes et de promouvoir la responsabilité déontologique et épistémologique, ce qui contribuera à l'amélioration des pratiques d'enseignement.At the University of Technology of Belfort-Montbéliard, digital learning resources have been designed for and integrated with the pedagogical structure of an English credit course for engineering students. Within an action research procedure, the nature and functions of these resources have been established in the light of theoretical knowledge, and the effects of this integration have been assessed. This article focuses on the skills - in the fields of

  9. Analyse und Konstruktion blinder interaktiver Signaturen

    OpenAIRE

    Fremdt, Christine

    2005-01-01

    Eine der zentralen Errungenschaften der Public-Key-Kryptographie ist die Möglichkeit, digitale Signaturen zu realisieren. Diese werden heute einerseits als alleine stehendes Primitiv zur Authentifikation von Personen oder Nachrichten angewendet. Andererseits gibt es zahlreiche Vorschläge für komplexe kryptographische Anwendungen, wie z.B. elektronische Geldsysteme oder elektronische Wahlen, welche digitale Signaturen oder Varianten von digitalen Signaturen als Bausteine verwenden. Von besonde...

  10. Transactions Concurrency Control in Web Service Environment

    DEFF Research Database (Denmark)

    Alrifai, Mohammad; Dolog, Peter; Nejdl, Wolfgang

    2006-01-01

    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...... concurrent access to web service resources and data. In this paper we propose an extension to the WS-Transaction Protocol which ensures the consistency of the data when independent business transactions access the data concurrently under the relaxed transaction properties. Our extension is based...

  11. Web-Based Distributed Simulation of Aeronautical Propulsion System

    Science.gov (United States)

    Zheng, Desheng; Follen, Gregory J.; Pavlik, William R.; Kim, Chan M.; Liu, Xianyou; Blaser, Tammy M.; Lopez, Isaac

    2001-01-01

    An application was developed to allow users to run and view the Numerical Propulsion System Simulation (NPSS) engine simulations from web browsers. Simulations were performed on multiple INFORMATION POWER GRID (IPG) test beds. The Common Object Request Broker Architecture (CORBA) was used for brokering data exchange among machines and IPG/Globus for job scheduling and remote process invocation. Web server scripting was performed by JavaServer Pages (JSP). This application has proven to be an effective and efficient way to couple heterogeneous distributed components.

  12. From the Director: Surfing the Web for Health Information

    Science.gov (United States)

    ... medical library, to give you easy access to authoritative health information from across the World Wide Web. ... engine, the top-ten results will likely include authoritative nonbiased sites alongside commercial sites and those with ...

  13. Web server for priority ordered multimedia services

    Science.gov (United States)

    Celenk, Mehmet; Godavari, Rakesh K.; Vetnes, Vermund

    2001-10-01

    In this work, our aim is to provide finer priority levels in the design of a general-purpose Web multimedia server with provisions of the CM services. The type of services provided include reading/writing a web page, downloading/uploading an audio/video stream, navigating the Web through browsing, and interactive video teleconferencing. The selected priority encoding levels for such operations follow the order of admin read/write, hot page CM and Web multicasting, CM read, Web read, CM write and Web write. Hot pages are the most requested CM streams (e.g., the newest movies, video clips, and HDTV channels) and Web pages (e.g., portal pages of the commercial Internet search engines). Maintaining a list of these hot Web pages and CM streams in a content addressable buffer enables a server to multicast hot streams with lower latency and higher system throughput. Cold Web pages and CM streams are treated as regular Web and CM requests. Interactive CM operations such as pause (P), resume (R), fast-forward (FF), and rewind (RW) have to be executed without allocation of extra resources. The proposed multimedia server model is a part of the distributed network with load balancing schedulers. The SM is connected to an integrated disk scheduler (IDS), which supervises an allocated disk manager. The IDS follows the same priority handling as the SM, and implements a SCAN disk-scheduling method for an improved disk access and a higher throughput. Different disks are used for the Web and CM services in order to meet the QoS requirements of CM services. The IDS ouput is forwarded to an Integrated Transmission Scheduler (ITS). The ITS creates a priority ordered buffering of the retrieved Web pages and CM data streams that are fed into an auto regressive moving average (ARMA) based traffic shaping circuitry before being transmitted through the network.

  14. WebViz:A Web-based Collaborative Interactive Visualization System for large-Scale Data Sets

    Science.gov (United States)

    Yuen, D. A.; McArthur, E.; Weiss, R. M.; Zhou, J.; Yao, B.

    2010-12-01

    WebViz is a web-based application designed to conduct collaborative, interactive visualizations of large data sets for multiple users, allowing researchers situated all over the world to utilize the visualization services offered by the University of Minnesota’s Laboratory for Computational Sciences and Engineering (LCSE). This ongoing project has been built upon over the last 3 1/2 years .The motivation behind WebViz lies primarily with the need to parse through an increasing amount of data produced by the scientific community as a result of larger and faster multicore and massively parallel computers coming to the market, including the use of general purpose GPU computing. WebViz allows these large data sets to be visualized online by anyone with an account. The application allows users to save time and resources by visualizing data ‘on the fly’, wherever he or she may be located. By leveraging AJAX via the Google Web Toolkit (http://code.google.com/webtoolkit/), we are able to provide users with a remote, web portal to LCSE's (http://www.lcse.umn.edu) large-scale interactive visualization system already in place at the University of Minnesota. LCSE’s custom hierarchical volume rendering software provides high resolution visualizations on the order of 15 million pixels and has been employed for visualizing data primarily from simulations in astrophysics to geophysical fluid dynamics . In the current version of WebViz, we have implemented a highly extensible back-end framework built around HTTP "server push" technology. The web application is accessible via a variety of devices including netbooks, iPhones, and other web and javascript-enabled cell phones. Features in the current version include the ability for users to (1) securely login (2) launch multiple visualizations (3) conduct collaborative visualization sessions (4) delegate control aspects of a visualization to others and (5) engage in collaborative chats with other users within the user interface

  15. A critical evaluation of Web sites offering patient information on tinnitus.

    LENUS (Irish Health Repository)

    Kieran, Stephen M

    2012-02-01

    The Internet is a vast information resource for both patients and healthcare professionals. However, the quality and content often lack formal scrutiny, so we examined the quality of patient information regarding tinnitus on the Internet. Using the three most popular search engines (google.com, yahoo.com, and msn.com), we found pertinent Web sites using the search term tinnitus. Web sites\\' accountability and authorship were evaluated using previously published criteria. The quality of patient information about tinnitus was assessed using a new 10-point scale, the Tinnitus Information Value (TIV). Statistical analysis was performed using the independent sample t-test (p Web sites was constructed using the first 30 English-language Web sites identified by each search engine. After duplicates and sites only containing links to other Web sites were eliminated, 39 remained. The mean score for accountability was 2.13 on scale of 0 to 7. The mean TIV was 5.0 on a scale of 0 to 10. Only 12 sites (30.8%) had their authors clearly identified. Twenty-two (56.4%) sites were sponsored by commercial interests or represented private practices. The mean TIV was significantly higher (p = 0.037) for noncommercial (personal, academic institution, or charity) sites (5.88 +\\/- 2.39 SD) than those representing commercial interests (4.32 +\\/- 2.10 SD). Tinnitus information available on the Internet is indeed variable, and care should be taken in recommending tinnitus Web sites to patients.

  16. WebLab-Deusto-CPLD: A Practical Experience

    Directory of Open Access Journals (Sweden)

    Veronica Canivell

    2012-01-01

    Full Text Available This paper shows the experience at the University of Deusto with the WebLab-Deusto-CPLD in the subject “Programmable Logic” of the Faculty of Engineering in the field of Digital Electronics. Presented herein is a technical overview of the laboratory, and its characteristics.

  17. Deep web query interface understanding and integration

    CERN Document Server

    Dragut, Eduard C; Yu, Clement T

    2012-01-01

    There are millions of searchable data sources on the Web and to a large extent their contents can only be reached through their own query interfaces. There is an enormous interest in making the data in these sources easily accessible. There are primarily two general approaches to achieve this objective. The first is to surface the contents of these sources from the deep Web and add the contents to the index of regular search engines. The second is to integrate the searching capabilities of these sources and support integrated access to them. In this book, we introduce the state-of-the-art tech

  18. Letting go of the words writing web content that works

    CERN Document Server

    Redish, Janice (Ginny)

    2012-01-01

    Web site design and development continues to become more sophisticated an important part of this maturity originates with well laid out and well written content. Ginny Redish is a world-renowned expert on information design and how to produce clear writing in plain language for the web. All of the invaluable information that she  shared in the first edition is included with numerous new examples. New information on content strategy for web sites, search engine optimization (SEO), and social media will enhance the book's content making it once again the only book you need to own to o

  19. Guide to cleaner coal technology-related web sites

    Energy Technology Data Exchange (ETDEWEB)

    Davidson, R; Jenkins, N; Zhang, X [IEA Coal Research - The Clean Coal Centre, London (United Kingdom)

    2001-07-01

    The 'Guide to Cleaner Coal Technology-Related Web Sites' is a guide to web sites that contain important information on cleaner coal technologies (CCT). It contains a short introduction to the World Wide Web and gives advice on how to search for information using directories and search engines. The core section of the Guide is a collection of factsheets summarising the information available on over 65 major web sites selected from organizations worldwide (except those promoting companies). These sites contain a wealth of information on CCT research and development, technology transfer, financing and markets. The factsheets are organised in the following categories. Associations, research centres and programmes; Climate change and sustainable development; Cooperative ventures; Electronic journals; Financial institutions; International organizations; National government information; and Statistical information. A full subject index is provided. The Guide concludes with some general comments on the quality of the sites reviewed.

  20. Finding Web-Based Anxiety Interventions on the World Wide Web: A Scoping Review.

    Science.gov (United States)

    Ashford, Miriam Thiel; Olander, Ellinor K; Ayers, Susan

    2016-06-01

    One relatively new and increasingly popular approach of increasing access to treatment is Web-based intervention programs. The advantage of Web-based approaches is the accessibility, affordability, and anonymity of potentially evidence-based treatment. Despite much research evidence on the effectiveness of Web-based interventions for anxiety found in the literature, little is known about what is publically available for potential consumers on the Web. Our aim was to explore what a consumer searching the Web for Web-based intervention options for anxiety-related issues might find. The objectives were to identify currently publically available Web-based intervention programs for anxiety and to synthesize and review these in terms of (1) website characteristics such as credibility and accessibility; (2) intervention program characteristics such as intervention focus, design, and presentation modes; (3) therapeutic elements employed; and (4) published evidence of efficacy. Web keyword searches were carried out on three major search engines (Google, Bing, and Yahoo-UK platforms). For each search, the first 25 hyperlinks were screened for eligible programs. Included were programs that were designed for anxiety symptoms, currently publically accessible on the Web, had an online component, a structured treatment plan, and were available in English. Data were extracted for website characteristics, program characteristics, therapeutic characteristics, as well as empirical evidence. Programs were also evaluated using a 16-point rating tool. The search resulted in 34 programs that were eligible for review. A wide variety of programs for anxiety, including specific anxiety disorders, and anxiety in combination with stress, depression, or anger were identified and based predominantly on cognitive behavioral therapy techniques. The majority of websites were rated as credible, secure, and free of advertisement. The majority required users to register and/or to pay a program access

  1. Síntesis y crítica de las evaluaciones de la efectividad de los motores de búsqueda en la Web. (Synthesis and critical review of evaluations of the effectiveness of Web search engines

    Directory of Open Access Journals (Sweden)

    Francisco Javier Martínez Méndez

    2003-01-01

    Full Text Available A considerable number of proposals for measuring the effectiveness of information retrieval systems have been made since the early days of such systems. The consolidation of the World Wide Web as the paradigmatic method for developing the Information Society, and the continuous multiplication of the number of documents published in this environment, has led to the implementation of the most advanced, and extensive information retrieval systems, in the shape of web search engines. Nevertheless, there is an underlying concern about the effectiveness of these systems, especially when they usually present, in response to a question, many documents with little relevance to the users' information needs. The evaluation of these systems has been, up to now, dispersed and various. The scattering is due to the lack of uniformity in the criteria used in evaluation, and this disparity derives from their a periodicity and variable coverage. In this review, we identify three groups of studies: explicit evaluations, experimental evaluations and, more recently, several proposals for the establishment of a global framework to evaluate these systems.

  2. 29 CFR 1926.758 - Systems-engineered metal buildings.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 8 2010-07-01 2010-07-01 false Systems-engineered metal buildings. 1926.758 Section 1926... Systems-engineered metal buildings. (a) All of the requirements of this subpart apply to the erection of systems-engineered metal buildings except §§ 1926.755 (column anchorage) and 1926.757 (open web steel...

  3. Nouvelles techniques de mise en valeur des ressources d'hydrocarbures New Techniques for Valorising Hydrocarbon Resources

    Directory of Open Access Journals (Sweden)

    Boy De la Tour X.

    2006-11-01

    Full Text Available Après avoir montré l'importance des réserves de pétrole non conventionnel et l'enjeu que représente pour l'humanité la mise en exploitation de ces ressources, cette étude examine les axes actuels de recherches et l'état de la technologie pour chacune des sources de nouveau pétrole retenues : mers profondes, récupération assistée, huiles lourdes et sables asphaltiques, schistes bitumineux et conversion du charbon. Il en ressort que si les ressources de nouveau pétrole sont considérables, leur mise en valeur nécessitera des investissements très lourds, et le coût du pétrole ainsi produit restera élevé, comparé au coût actuel du pétrole conventionnel. Compte tenu des délais de mise en oeuvre, des problèmes technologiques restant à résoudre et de la nécessité de réaliser des pilotes semi-industriels très coûteux pour expérimenter les nouvelles techniques, il convient de consentir sans attendre un effort important de recherche technologique, impliquant un accroissement sensible des budgets de R&D, mais aussi des incitations financières appropriées. Cet effort de mise au point de technologies adaptées à ces sources d'hydrocarbures sera favorisé par les nouvelles conditions économiques créées par la rareté relative des réserves d'hydrocarbures classiques, à condition que les Etats, par leur politique, favorisent la production de ressources d'hydrocarbures à coût élevé. A l'heure actuelle, on peut évaluer la production de pétrole difficile à environ 100 Mt, l'essentiel étant réalisé dans le domaine des huiles lourdes et de la récupération assistée ; on estime que la production de nouveau pétrole pourrait représenter 200 à 350 Mt en 1990 et se situer entre 600 et 900 Mt en 2000, soit 5 à 8 % de la production de pétrole en 1990 et 15 à 20 % en 2000. Un tel objectif nécessiterait des investissements de l'ordre de 500 à 750 milliards de dollars 1980. After pointing out the importance of

  4. Digital dissemination platform of transportation engineering education materials.

    Science.gov (United States)

    2014-09-01

    National agencies have called for more widespread adoption of best practices in engineering education. To facilitate this sharing of practices we will develop a web-based system that will be used by transportation engineering educators to share curri...

  5. Comparative Study on Three Major Internet Search Engines ...

    African Journals Online (AJOL)

    , Google and ask.com search engines. Experimental method was used with ten reference questions which were used to query each of the search engines . Yahoo obtained the highest results (521,801,043) among the three Web search ...

  6. Hilfe oder Hindernis? Meinungen finnischer Sprachstudierender über Mehrsprachigkeit als Ressource beim Deutschlernen

    Directory of Open Access Journals (Sweden)

    Sabine Grasz

    2017-10-01

    Full Text Available Der Fremdsprachenunterricht in Finnland befindet sich gerade in einer Umbruchphase, denn mit der Einführung neuer Lehrpläne im Jahr 2016 werden Verfahren der Mehrsprachigkeitsdidaktik in Zukunft eine zentrale Rolle spielen. In diesem Beitrag wird untersucht, ob und wie finnische Universitätsstudierende, die selbst von einer eher monolingual ausgerichteten Lerntradition geprägt sind, ihr mehrsprachiges Repertoire als Ressource beim Lernen weiterer Fremdsprachen sehen. Zu diesem Zweck wurde eine Befragung unter Lehramtsstudierenden der Fächer Anglistik und Skandinavistik, die Germanistik als Nebenfach studieren möchten, durchgeführt. Die Analyse zeigt, dass die Studierenden zwar mehrheitlich positive Einstellungen gegenüber Mehrsprachigkeit aufweisen, dass es aber Entwicklungsbedarf im Hinblick auf Sprachbewusstheit, multilinguale Fähigkeiten und bei den Einstellungen gegenüber Sprachmischungen gibt. Foreign language education in Finland is currently undergoing a period of change, as the introduction of new curricula in 2016 will lead to a central role of multilingualism in teaching. This article examines whether and how Finnish university students, who themselves were influenced by a more monolingual learning tradition, consider their multilingual repertoire as a resource for learning other foreign languages. For this purpose, a survey was conducted among teacher students of English and Swedish, who would like to study German as a minor. The analysis shows that while the majority of students have positive attitudes towards multilingualism, there is a need for development in terms of language awareness, multilingual skills, and attitudes towards language mixes.

  7. Web Page Recommendation Using Web Mining

    OpenAIRE

    Modraj Bhavsar; Mrs. P. M. Chavan

    2014-01-01

    On World Wide Web various kind of content are generated in huge amount, so to give relevant result to user web recommendation become important part of web application. On web different kind of web recommendation are made available to user every day that includes Image, Video, Audio, query suggestion and web page. In this paper we are aiming at providing framework for web page recommendation. 1) First we describe the basics of web mining, types of web mining. 2) Details of each...

  8. Searching for information on the World Wide Web with a search engine: a pilot study on cognitive flexibility in younger and older users.

    Science.gov (United States)

    Dommes, Aurelie; Chevalier, Aline; Rossetti, Marilyne

    2010-04-01

    This pilot study investigated the age-related differences in searching for information on the World Wide Web with a search engine. 11 older adults (6 men, 5 women; M age=59 yr., SD=2.76, range=55-65 yr.) and 12 younger adults (2 men, 10 women; M=23.7 yr., SD=1.07, range=22-25 yr.) had to conduct six searches differing in complexity, and for which a search method was or was not induced. The results showed that the younger and older participants provided with an induced search method were less flexible than the others and produced fewer new keywords. Moreover, older participants took longer than the younger adults, especially in the complex searches. The younger participants were flexible in the first request and spontaneously produced new keywords (spontaneous flexibility), whereas the older participants only produced new keywords when confronted by impasses (reactive flexibility). Aging may influence web searches, especially the nature of keywords used.

  9. 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.

  10. Information about liver transplantation on the World Wide Web.

    Science.gov (United States)

    Hanif, F; Sivaprakasam, R; Butler, A; Huguet, E; Pettigrew, G J; Michael, E D A; Praseedom, R K; Jamieson, N V; Bradley, J A; Gibbs, P

    2006-09-01

    Orthotopic liver transplant (OLTx) has evolved to a successful surgical management for end-stage liver diseases. Awareness and information about OLTx is an important tool in assisting OLTx recipients and people supporting them, including non-transplant clinicians. The study aimed to investigate the nature and quality of liver transplant-related patient information on the World Wide Web. Four common search engines were used to explore the Internet by using the key words 'Liver transplant'. The URL (unique resource locator) of the top 50 returns was chosen as it was judged unlikely that the average user would search beyond the first 50 sites returned by a given search. Each Web site was assessed on the following categories: origin, language, accessibility and extent of the information. A weighted Information Score (IS) was created to assess the quality of clinical and educational value of each Web site and was scored independently by three transplant clinicians. The Internet search performed with the aid of the four search engines yielded a total of 2,255,244 Web sites. Of the 200 possible sites, only 58 Web sites were assessed because of repetition of the same Web sites and non-accessible links. The overall median weighted IS was 22 (IQR 1 - 42). Of the 58 Web sites analysed, 45 (77%) belonged to USA, six (10%) were European, and seven (12%) were from the rest of the world. The median weighted IS of publications originating from Europe and USA was 40 (IQR = 22 - 60) and 23 (IQR = 6 - 38), respectively. Although European Web sites produced a higher weighted IS [40 (IQR = 22 - 60)] as compared with the USA publications [23 (IQR = 6 - 38)], this was not statistically significant (p = 0.07). Web sites belonging to the academic institutions and the professional organizations scored significantly higher with a median weighted IS of 28 (IQR = 16 - 44) and 24(12 - 35), respectively, as compared with the commercial Web sites (median = 6 with IQR of 0 - 14, p = .001). There

  11. BIOMedical Search Engine Framework: Lightweight and customized implementation of domain-specific biomedical search engines.

    Science.gov (United States)

    Jácome, Alberto G; Fdez-Riverola, Florentino; Lourenço, Anália

    2016-07-01

    Text mining and semantic analysis approaches can be applied to the construction of biomedical domain-specific search engines and provide an attractive alternative to create personalized and enhanced search experiences. Therefore, this work introduces the new open-source BIOMedical Search Engine Framework for the fast and lightweight development of domain-specific search engines. The rationale behind this framework is to incorporate core features typically available in search engine frameworks with flexible and extensible technologies to retrieve biomedical documents, annotate meaningful domain concepts, and develop highly customized Web search interfaces. The BIOMedical Search Engine Framework integrates taggers for major biomedical concepts, such as diseases, drugs, genes, proteins, compounds and organisms, and enables the use of domain-specific controlled vocabulary. Technologies from the Typesafe Reactive Platform, the AngularJS JavaScript framework and the Bootstrap HTML/CSS framework support the customization of the domain-oriented search application. Moreover, the RESTful API of the BIOMedical Search Engine Framework allows the integration of the search engine into existing systems or a complete web interface personalization. The construction of the Smart Drug Search is described as proof-of-concept of the BIOMedical Search Engine Framework. This public search engine catalogs scientific literature about antimicrobial resistance, microbial virulence and topics alike. The keyword-based queries of the users are transformed into concepts and search results are presented and ranked accordingly. The semantic graph view portraits all the concepts found in the results, and the researcher may look into the relevance of different concepts, the strength of direct relations, and non-trivial, indirect relations. The number of occurrences of the concept shows its importance to the query, and the frequency of concept co-occurrence is indicative of biological relations

  12. Conditions of competition between the production of water by desalination and natural resources; Les conditions de concurrence entre la production d'eau par dessalement et les ressources naturelles

    Energy Technology Data Exchange (ETDEWEB)

    Gaussens, J [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1969-07-01

    A close examination of the local supply and demand for fresh water is involved when considering a sea water desalination plant in a given region. This examination makes it possible in most cases to undertake a thorough study of the natural resources, resulting in the use of desalination being rejected. After confirming this fact by precise examples, the authors consider that the preliminary study should be extended, taking into account the complementary character of natural resources and desalination systems: contribution to peak demand, contribution to base demand. This analysis results in a classification of the main user regions according to certain economic criteria defining their suitability for the use of desalination processes. (author) [French] Envisager une installation d'eau de mer dans une region donnee, entraine un examen attentif de l'offre et de la demande locale en eau douce. Cet examen permet de conduire dans la plupart des cas a une etude approfondie des ressources naturelles qui aboutit a ecarter le recours au dessalement. Apres avoir constate ce fait, par des exemples precis, les auteurs estiment que l'on doit pousser plus loin l'etude preliminaire en tenant compte de la complementarite entre les ressources naturelles et les systemes de dessalement: contribution a la demande de pointe, contribution a la demande de base. Cette analyse conduit a classer les regions utilisatrices essentielles selon certains criteres economiques definissant leur aptitude a l'utilisation des procedes de dessalement. (auteur)

  13. Evaluation of a metal shear web selectively reinforced with filamentary composites for space shuttle application. Phase 1 summary report: Shear web design development

    Science.gov (United States)

    Laakso, J. H.; Zimmerman, D. K.

    1972-01-01

    An advanced composite shear web design concept was developed for the Space Shuttle orbiter main engine thrust beam structure. Various web concepts were synthesized by a computer-aided adaptive random search procedure. A practical concept is identified having a titanium-clad + or - 45 deg boron/epoxy web plate with vertical boron/epoxy reinforced aluminum stiffeners. The boron-epoxy laminate contributes to the strength and stiffness efficiency of the basic web section. The titanium-cladding functions to protect the polymeric laminate parts from damaging environments and is chem-milled to provide reinforcement in selected areas. Detailed design drawings are presented for both boron/epoxy reinforced and all-metal shear webs. The weight saving offered is 24% relative to all-metal construction at an attractive cost per pound of weight saved, based on the detailed designs. Small scale element tests substantiate the boron/epoxy reinforced design details in critical areas. The results show that the titanium-cladding reliably reinforces the web laminate in critical edge load transfer and stiffener fastener hole areas.

  14. Collaborative Web Search Who, What, Where, When, and Why

    CERN Document Server

    Morris, Meredith Ringel

    2009-01-01

    Today, Web search is treated as a solitary experience. Web browsers and search engines are typically designed to support a single user, working alone. However, collaboration on information-seeking tasks is actually commonplace. Students work together to complete homework assignments, friends seek information about joint entertainment opportunities, family members jointly plan vacation travel, and colleagues jointly conduct research for their projects. As improved networking technologies and the rise of social media simplify the process of remote collaboration, and large, novel display form-fac

  15. Anwendungsbeispiel aus der Fahrzeugtechnik

    Science.gov (United States)

    Mücher, Frank

    Im Automobilbau werden zunehmend elektronische Bauelemente eingesetzt. Systeme wie ASR (Antriebs-Schlupf-Regelung), ABS (Anti-Blockier-System) und ESP (Elektronisches Stabilitäts-Programm) steigern die Traktion und verbessern die aktive Sicherheit eines Fahrzeugs. Aktive Federelemente und schaltbare Dämpfer erhöhen nicht nur den Komfort, sondern verbessern auch die Fahrsicherheit. Mit elektrischen Lenkungen greift man direkt in das Zusammenspiel zwischen Fahrer und Fahrzeug ein (WHH04).

  16. Subject Gateway Sites and Search Engine Ranking.

    Science.gov (United States)

    Thelwall, Mike

    2002-01-01

    Discusses subject gateway sites and commercial search engines for the Web and presents an explanation of Google's PageRank algorithm. The principle question addressed is the conditions under which a gateway site will increase the likelihood that a target page is found in search engines. (LRW)

  17. PENGEMBANGAN TERMINAL AGRIBISNIS VIRTUAL BERBASIS WEB

    Directory of Open Access Journals (Sweden)

    Arif Imam Suroso

    2011-08-01

    Full Text Available Normal 0 false false false MicrosoftInternetExplorer4 This study was conducted to develop the prototype of web based virtual agribusiness center as an instrument to increase the scope of marketing channel of agribusiness products in Indonesia.  Using web engineering approach, this virtual agribusiness center information which conceptually has the same role as wholesaler marketing center was developed and tested using one month data of fruits and vegetables prices in traditonal market. There are tree main components of the system: catalog online, cart, and order tracking.  To ensure the quality of the system, the system was tested using Pressman approach and evaluation was done based on its functionality, usability, and reliability . 

  18. Quality of Web-based information on obsessive compulsive disorder.

    Science.gov (United States)

    Klila, Hedi; Chatton, Anne; Zermatten, Ariane; Khan, Riaz; Preisig, Martin; Khazaal, Yasser

    2013-01-01

    The Internet is increasingly used as a source of information for mental health issues. The burden of obsessive compulsive disorder (OCD) may lead persons with diagnosed or undiagnosed OCD, and their relatives, to search for good quality information on the Web. This study aimed to evaluate the quality of Web-based information on English-language sites dealing with OCD and to compare the quality of websites found through a general and a medically specialized search engine. Keywords related to OCD were entered into Google and OmniMedicalSearch. Websites were assessed on the basis of accountability, interactivity, readability, and content quality. The "Health on the Net" (HON) quality label and the Brief DISCERN scale score were used as possible content quality indicators. Of the 235 links identified, 53 websites were analyzed. The content quality of the OCD websites examined was relatively good. The use of a specialized search engine did not offer an advantage in finding websites with better content quality. A score ≥16 on the Brief DISCERN scale is associated with better content quality. This study shows the acceptability of the content quality of OCD websites. There is no advantage in searching for information with a specialized search engine rather than a general one. The Internet offers a number of high quality OCD websites. It remains critical, however, to have a provider-patient talk about the information found on the Web.

  19. SISTEM INFORMASI RUMAH SAKIT BERBASIS WEB MENGGUNAKAN JAVA SERVER PAGES

    Directory of Open Access Journals (Sweden)

    Heru Cahya Rustamaji

    2010-01-01

    Teknologi yang dipakai untuk membangun sistem informasi berbasis web ini adalah menggunakan JSP dan apache Tomcat. Tomcat merupakan servlet engine open source yang termasuk dalam proyek Jakarta yang dikerjakan oleh Apache Software Foundation.

  20. What Can Pictures Tell Us About Web Pages? Improving Document Search Using Images.

    Science.gov (United States)

    Rodriguez-Vaamonde, Sergio; Torresani, Lorenzo; Fitzgibbon, Andrew W

    2015-06-01

    Traditional Web search engines do not use the images in the HTML pages to find relevant documents for a given query. Instead, they typically operate by computing a measure of agreement between the keywords provided by the user and only the text portion of each page. In this paper we study whether the content of the pictures appearing in a Web page can be used to enrich the semantic description of an HTML document and consequently boost the performance of a keyword-based search engine. We present a Web-scalable system that exploits a pure text-based search engine to find an initial set of candidate documents for a given query. Then, the candidate set is reranked using visual information extracted from the images contained in the pages. The resulting system retains the computational efficiency of traditional text-based search engines with only a small additional storage cost needed to encode the visual information. We test our approach on one of the TREC Million Query Track benchmarks where we show that the exploitation of visual content yields improvement in accuracies for two distinct text-based search engines, including the system with the best reported performance on this benchmark. We further validate our approach by collecting document relevance judgements on our search results using Amazon Mechanical Turk. The results of this experiment confirm the improvement in accuracy produced by our image-based reranker over a pure text-based system.

  1. C'è lavoro sul web?

    Directory of Open Access Journals (Sweden)

    Patrizia Tullini

    2015-03-01

    Full Text Available Is there work on web? Can we distinguish web-users between "workers"? What innovative ways takes digital activity? Is it possible to identify typical professional profiles and trades on web? Can the extreme accessibility and impersonality of the web create genuine employment relationships and support production processes? Is there a way to apply labour rules and protections to experiences that intentionally take advantage of extraterritoriality, autarky and polycentric dimension of Internet?The questions raised by the Author underline that the web, rather than simply providing means and support to the movement of information in advantage of the labour market traditional players (companies, workers, private agencies, public employment services, has instead developed autonomously its own potential. On one hand, the web has became a professional intermediary, using the capabilities of computing devices and search engine that offer global employment services 2.0; on the other hand, has caused the “dis-intermediation” towards institutional operators (public and private through the dissemination of informal circuits, sites of social recruiting, and also civic networks aimed at intercepting interstitial job opportunities.Moreover, the web tends increasingly to exchange or combine the role of the intermediary and the one of the employer in the labour market, making available - at least potentially - a virtual, but global, space for outsourcing. The A. reflects, in particular, on legal characterization of digital work through crowdsourcing and on the application of rules of contracts and Agency work.Although work on web is difficult to recognize, measure and regulate in legal terms, it has been observed that the use of technological devices and digital services mark the rebirth of the "trade" - in its original, ancient meaning of the practice of an art or the expression of a talent - in contrast to the "profession" established in the high twentieth

  2. Automatic Planning of External Search Engine Optimization

    Directory of Open Access Journals (Sweden)

    Vita Jasevičiūtė

    2015-07-01

    Full Text Available This paper describes an investigation of the external search engine optimization (SEO action planning tool, dedicated to automatically extract a small set of most important keywords for each month during whole year period. The keywords in the set are extracted accordingly to external measured parameters, such as average number of searches during the year and for every month individually. Additionally the position of the optimized web site for each keyword is taken into account. The generated optimization plan is similar to the optimization plans prepared manually by the SEO professionals and can be successfully used as a support tool for web site search engine optimization.

  3. 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.

  4. Quality of web-based information on bipolar disorder.

    Science.gov (United States)

    Morel, Vincent; Chatton, Anne; Cochand, Sophie; Zullino, Daniele; Khazaal, Yasser

    2008-10-01

    To evaluate web-based information on bipolar disorder and to assess particular content quality indicators. Two keywords, "bipolar disorder" and "manic depressive illness" were entered into popular World Wide Web search engines. Websites were assessed with a standardized proforma designed to rate sites on the basis of accountability, presentation, interactivity, readability and content quality. "Health on the Net" (HON) quality label, and DISCERN scale scores were used to verify their efficiency as quality indicators. Of the 80 websites identified, 34 were included. Based on outcome measures, the content quality of the sites turned-out to be good. Content quality of web sites dealing with bipolar disorder is significantly explained by readability, accountability and interactivity as well as a global score. The overall content quality of the studied bipolar disorder websites is good.

  5. A Web-based Multi-user Interactive Visualization System For Large-Scale Computing Using Google Web Toolkit Technology

    Science.gov (United States)

    Weiss, R. M.; McLane, J. C.; Yuen, D. A.; Wang, S.

    2009-12-01

    We have created a web-based, interactive system for multi-user collaborative visualization of large data sets (on the order of terabytes) that allows users in geographically disparate locations to simultaneous and collectively visualize large data sets over the Internet. By leveraging asynchronous java and XML (AJAX) web development paradigms via the Google Web Toolkit (http://code.google.com/webtoolkit/), we are able to provide remote, web-based users a web portal to LCSE's (http://www.lcse.umn.edu) large-scale interactive visualization system already in place at the University of Minnesota that provides high resolution visualizations to the order of 15 million pixels by Megan Damon. In the current version of our software, we have implemented a new, highly extensible back-end framework built around HTTP "server push" technology to provide a rich collaborative environment and a smooth end-user experience. Furthermore, the web application is accessible via a variety of devices including netbooks, iPhones, and other web- and javascript-enabled cell phones. New features in the current version include: the ability for (1) users to launch multiple visualizations, (2) a user to invite one or more other users to view their visualization in real-time (multiple observers), (3) users to delegate control aspects of the visualization to others (multiple controllers) , and (4) engage in collaborative chat and instant messaging with other users within the user interface of the web application. We will explain choices made regarding implementation, overall system architecture and method of operation, and the benefits of an extensible, modular design. We will also discuss future goals, features, and our plans for increasing scalability of the system which includes a discussion of the benefits potentially afforded us by a migration of server-side components to the Google Application Engine (http://code.google.com/appengine/).

  6. Quality of Web-based information on obsessive compulsive disorder

    Directory of Open Access Journals (Sweden)

    Klila H

    2013-11-01

    Full Text Available Hedi Klila,1 Anne Chatton,2 Ariane Zermatten,2 Riaz Khan,2 Martin Preisig,1,3 Yasser Khazaal2,4 1Department of Psychiatry, Lausanne University Hospital, Lausanne, Switzerland; 2Department of Mental Health and Psychiatry, Geneva University Hospitals, Geneva, Switzerland; 3Lausanne University, Lausanne, Switzerland; 4Geneva University, Geneva, Switzerland Background: The Internet is increasingly used as a source of information for mental health issues. The burden of obsessive compulsive disorder (OCD may lead persons with diagnosed or undiagnosed OCD, and their relatives, to search for good quality information on the Web. This study aimed to evaluate the quality of Web-based information on English-language sites dealing with OCD and to compare the quality of websites found through a general and a medically specialized search engine. Methods: Keywords related to OCD were entered into Google and OmniMedicalSearch. Websites were assessed on the basis of accountability, interactivity, readability, and content quality. The "Health on the Net" (HON quality label and the Brief DISCERN scale score were used as possible content quality indicators. Of the 235 links identified, 53 websites were analyzed. Results: The content quality of the OCD websites examined was relatively good. The use of a specialized search engine did not offer an advantage in finding websites with better content quality. A score ≥16 on the Brief DISCERN scale is associated with better content quality. Conclusion: This study shows the acceptability of the content quality of OCD websites. There is no advantage in searching for information with a specialized search engine rather than a general one. Practical implications: The Internet offers a number of high quality OCD websites. It remains critical, however, to have a provider–patient talk about the information found on the Web. Keywords: Internet, quality indicators, anxiety disorders, OCD, search engine

  7. Conditions of competition between the production of water by desalination and natural resources; Les conditions de concurrence entre la production d'eau par dessalement et les ressources naturelles

    Energy Technology Data Exchange (ETDEWEB)

    Gaussens, J. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1969-07-01

    A close examination of the local supply and demand for fresh water is involved when considering a sea water desalination plant in a given region. This examination makes it possible in most cases to undertake a thorough study of the natural resources, resulting in the use of desalination being rejected. After confirming this fact by precise examples, the authors consider that the preliminary study should be extended, taking into account the complementary character of natural resources and desalination systems: contribution to peak demand, contribution to base demand. This analysis results in a classification of the main user regions according to certain economic criteria defining their suitability for the use of desalination processes. (author) [French] Envisager une installation d'eau de mer dans une region donnee, entraine un examen attentif de l'offre et de la demande locale en eau douce. Cet examen permet de conduire dans la plupart des cas a une etude approfondie des ressources naturelles qui aboutit a ecarter le recours au dessalement. Apres avoir constate ce fait, par des exemples precis, les auteurs estiment que l'on doit pousser plus loin l'etude preliminaire en tenant compte de la complementarite entre les ressources naturelles et les systemes de dessalement: contribution a la demande de pointe, contribution a la demande de base. Cette analyse conduit a classer les regions utilisatrices essentielles selon certains criteres economiques definissant leur aptitude a l'utilisation des procedes de dessalement. (auteur)

  8. Rendimiento de los sistemas de recuperación de información en la web: evalución de servicios de búsqueda (search engines.

    Directory of Open Access Journals (Sweden)

    Olvera Lobo, María Dolores

    2000-09-01

    Full Text Available Ten search engines, Altavista, Excite, Hotbot, Infoseek, Lycos. Magellan, OpenText, WebCrawler, WWWWorm, Yahoo, were evaluated, by means of a questionnaire with 20 items (adding up to a total of 200 questions. The 20 first results for each question were analysed in terms of relevance, and values of precision and recall were computed for the resulting 4000 references. The results are also analyzed in terms of the type of question (boolean or natural language and topic (specialized vs. general interest. The results showed that Excite, Infoseek and AltaVista performed generally better. The conclusion of this methodological trial was that the method used allows the evaluation of the performance of Information Retrieval Systems in the Web. As for the results, web search engines are not very precise but extremely exhaustive.

    Se han evaluado diez servicios de búsqueda: Altavista, Excite, Hotbot, Infoseek, Lycos, Magellan, OpenText, WebCrawler, WWWWorm, Yahoo. Se formularon 20 preguntas a cada uno de los 10 sistemas evaluados por lo que se realizaron 200 consultas. Además, se examinó la relevancia de los primeros 20 resultados de cada consulta lo que significa que, en total, se revisaron aproximadamente 4.000 referencias, para cada una de las cuales se calcularon los valores de precisión y exhaustividad. Los análisis muestran que Excite, Infoseek y Altavista son los tres servicios que, de forma genérica, muestran mejor rendimiento. Se analizan también los resultados en función del tipo de pregunta (booleanas o de frase y del tema (ocio o especializada. Se concluye que el método empleado permite analizar el rendimiento de los SRI de la W3 y que los resultados ponen de manifiesto que los buscadores no son sistemas de recuperación de información muy precisos aunque sí muy exhaustivos.

  9. Reviews Equipment: Data logger Book: Imagined Worlds Equipment: Mini data loggers Equipment: PICAXE-18M2 data logger Books: Engineering: A Very Short Introduction and To Engineer Is Human Book: Soap, Science, & Flat-Screen TVs Equipment: uLog and SensorLab Web Watch

    Science.gov (United States)

    2012-07-01

    WE RECOMMEND Data logger Fourier NOVA LINK: data logging and analysis To Engineer is Human Engineering: essays and insights Soap, Science, & Flat-Screen TVs People, politics, business and science overlap uLog sensors and sensor adapter A new addition to the LogIT range offers simplicity and ease of use WORTH A LOOK Imagined Worlds Socio-scientific predictions for the future Mini light data logger and mini temperature data logger Small-scale equipment for schools SensorLab Plus LogIT's supporting software, with extra features HANDLE WITH CARE CAXE110P PICAXE-18M2 data logger Data logger 'on view' but disappoints Engineering: A Very Short Introduction A broad-brush treatment fails to satisfy WEB WATCH Two very different websites for students: advanced physics questions answered and a more general BBC science resource

  10. A Network of Automatic Control Web-Based Laboratories

    Science.gov (United States)

    Vargas, Hector; Sanchez Moreno, J.; Jara, Carlos A.; Candelas, F. A.; Torres, Fernando; Dormido, Sebastian

    2011-01-01

    This article presents an innovative project in the context of remote experimentation applied to control engineering education. Specifically, the authors describe their experience regarding the analysis, design, development, and exploitation of web-based technologies within the scope of automatic control. This work is part of an inter-university…

  11. A web-based nuclear simulator using RELAP5 and LabVIEW

    International Nuclear Information System (INIS)

    Kim, K.D.; Rizwan-uddin

    2007-01-01

    A web-based nuclear reactor simulator has been developed using the best-estimate nuclear system analysis code RELAP5 as its engine, and LabVIEW for graphical user interface and web-casting. Simulator retains the accuracy of the best-estimate code. Results are displayed in user friendly graphical format. Color-coded nominal values are displayed along with the current status of different variables in tab activated windows. Some variables of interest are also shown as a function of time. All graphical outputs are displayed in web browsers making the simulator's front end independent of the operating system. The interactive simulation feature allows the users to simulate specific reactor transients - such as LOCA, scram, etc. - using a single click. Simulator's graphical output can be web-casted and is thus available to anybody with access to the web. Moreover, if permitted, the simulator can be operated remotely from another site connected to the server via the World Wide Web

  12. Presencia y visibilidad web de las universidades públicas españolas

    Directory of Open Access Journals (Sweden)

    Orduña-Malea, Enrique

    2010-06-01

    Full Text Available The evolution of size and visibility of the Spanish public universities websites according to various search engines (Google, Yahoo!, Live/Bing y Exalead was studied from January to June 2009. Additionally, the article proposes two indicators for understanding the importance of a web domain: the Relative representativeness size factor (Rs and the Relative representativeness visibility factor (Rv. These indicators, which consider the number of both documents and links, respectively, during a specific interval of time are intended to be applied in the design and construction of university rankings based on cybermetric techniques. The results confirm that the size differences among academic web domains vary significantly depending on the search engine used; therefore the use of a single web browser cannot supply reliable information about the actual size of the web domain. Moreover, the use of combined values from the mean obtained from each search engine does not offer reliable results, given the variance of data obtained from the different search engines, as well as the index differences of Rs. The differences concerning visibility were smaller, but significant nonetheless. Rs and Rv indicators were found to provide useful and consistent information about the level of development of universities on the Web during a given time interval. There was also a positive correlation between these two indicators on both Yahoo! and Exalead, confirming the relationship between the number of documents of an academic web domain and the number of links it receives over time.

    Se estudia la evolución del tamaño y visibilidad de los dominios web de las universidades públicas españolas desde enero hasta junio de 2009 en función de diversos buscadores web (Google, Yahoo!, Live/Bing y Exalead. Asimismo, se proponen el factor de representatividad relativa media en tamaño (Rs y el factor de representatividad relativa media en visibilidad (Rv como

  13. THE EFFECTIVENESS OF WEB-BASED INTERACTIVE BLENDED LEARNING MODEL IN ELECTRICAL ENGINEERING COURSES

    Directory of Open Access Journals (Sweden)

    Hansi Effendi

    2015-12-01

    Full Text Available The study was to test the effectiveness of the Web-Based Interactive Blended Learning Model (BLIBW for subjects in the Department of Electrical Engineering, Padang State University. The design that the researcher employed was a quasi-experimental design with one group pretest-posttest, which was conducted on a group of students consisting of 30 people and the test was conducted for two times. The effectiveness of BLIBW Model was tested by comparing the average pretest scores and the average posttest scores both in the first trial and the second trial. The average prestest and posttest scores in the first trial were 14.13 and 33.80. The increase in the average score was significant at alpha 0.05. Then, the average pretest and posttest scores in the second trial were 18.67 and 47.03. The result was also significant at alpha 0.05. The effectiveness of BLIBW Model in the second trial was higher than in the first test. Those result were not entirely satisfactory and it might be caused several weaknesses in both tests such as: the number of sessions were limited, there was only one subject, and the number of students who were subjected too limited. However, the researcher would like to conclude that the BLIBW Model might be implemented as a replacement alternative for the face-to-face instruction.

  14. CYCLOSA: Decentralizing Private Web Search Through SGX-Based Browser Extensions

    OpenAIRE

    Pires, Rafael; Goltzsche, David; Mokhtar, Sonia Ben; Bouchenak, Sara; Boutet, Antoine; Felber, Pascal; Kapitza, Rüdiger; Pasin, Marcelo; Schiavoni, Valerio

    2018-01-01

    By regularly querying Web search engines, users (unconsciously) disclose large amounts of their personal data as part of their search queries, among which some might reveal sensitive information (e.g. health issues, sexual, political or religious preferences). Several solutions exist to allow users querying search engines while improving privacy protection. However, these solutions suffer from a number of limitations: some are subject to user re-identification attacks, while others lack scala...

  15. TDCCREC: AN EFFICIENT AND SCALABLE WEB-BASED RECOMMENDATION SYSTEM

    Directory of Open Access Journals (Sweden)

    K.Latha

    2010-10-01

    Full Text Available Web browsers are provided with complex information space where the volume of information available to them is huge. There comes the Recommender system which effectively recommends web pages that are related to the current webpage, to provide the user with further customized reading material. To enhance the performance of the recommender systems, we include an elegant proposed web based recommendation system; Truth Discovery based Content and Collaborative RECommender (TDCCREC which is capable of addressing scalability. Existing approaches such as Learning automata deals with usage and navigational patterns of users. On the other hand, Weighted Association Rule is applied for recommending web pages by assigning weights to each page in all the transactions. Both of them have their own disadvantages. The websites recommended by the search engines have no guarantee for information correctness and often delivers conflicting information. To solve them, content based filtering and collaborative filtering techniques are introduced for recommending web pages to the active user along with the trustworthiness of the website and confidence of facts which outperforms the existing methods. Our results show how the proposed recommender system performs better in predicting the next request of web users.

  16. An Improved Abstract State Machine Based Choreography Specification and Execution Algorithm for Semantic Web Services

    Directory of Open Access Journals (Sweden)

    Shahin Mehdipour Ataee

    2018-01-01

    Full Text Available We identify significant weaknesses in the original Abstract State Machine (ASM based choreography algorithm of Web Service Modeling Ontology (WSMO, which make it impractical for use in semantic web service choreography engines. We present an improved algorithm which rectifies the weaknesses of the original algorithm, as well as a practical, fully functional choreography engine implementation in Flora-2 based on the improved algorithm. Our improvements to the choreography algorithm include (i the linking of the initial state of the ASM to the precondition of the goal, (ii the introduction of the concept of a final state in the execution of the ASM and its linking to the postcondition of the goal, and (iii modification to the execution of the ASM so that it stops when the final state condition is satisfied by the current configuration of the machine. Our choreography engine takes as input semantic web service specifications written in the Flora-2 dialect of F-logic. Furthermore, we prove the equivalence of ASMs (evolving algebras and evolving ontologies in the sense that one can simulate the other, a first in literature. Finally, we present a visual editor which facilitates the design and deployment of our F-logic based web service and goal specifications.

  17. Engineering students' sustainability approaches

    Science.gov (United States)

    Haase, S.

    2014-05-01

    Sustainability issues are increasingly important in engineering work all over the world. This article explores systematic differences in self-assessed competencies, interests, importance, engagement and practices of newly enrolled engineering students in Denmark in relation to environmental and non-environmental sustainability issues. The empirical base of the article is a nation-wide, web-based survey sent to all newly enrolled engineering students in Denmark commencing their education in the fall term 2010. The response rate was 46%. The survey focused on a variety of different aspects of what can be conceived as sustainability. By means of cluster analysis, three engineering student approaches to sustainability are identified and described. The article provides knowledge on the different prerequisites of engineering students in relation to the role of sustainability in engineering. This information is important input to educators trying to target new engineering students and contribute to the provision of engineers equipped to meet sustainability challenges.

  18. A web search on environmental topics: what is the role of ranking?

    Science.gov (United States)

    Covolo, Loredana; Filisetti, Barbara; Mascaretti, Silvia; Limina, Rosa Maria; Gelatti, Umberto

    2013-12-01

    Although the Internet is easy to use, the mechanisms and logic behind a Web search are often unknown. Reliable information can be obtained, but it may not be visible as the Web site is not located in the first positions of search results. The possible risks of adverse health effects arising from environmental hazards are issues of increasing public interest, and therefore the information about these risks, particularly on topics for which there is no scientific evidence, is very crucial. The aim of this study was to investigate whether the presentation of information on some environmental health topics differed among various search engines, assuming that the most reliable information should come from institutional Web sites. Five search engines were used: Google, Yahoo!, Bing, Ask, and AOL. The following topics were searched in combination with the word "health": "nuclear energy," "electromagnetic waves," "air pollution," "waste," and "radon." For each topic three key words were used. The first 30 search results for each query were considered. The ranking variability among the search engines and the type of search results were analyzed for each topic and for each key word. The ranking of institutional Web sites was given particular consideration. Variable results were obtained when surfing the Internet on different environmental health topics. Multivariate logistic regression analysis showed that, when searching for radon and air pollution topics, it is more likely to find institutional Web sites in the first 10 positions compared with nuclear power (odds ratio=3.4, 95% confidence interval 2.1-5.4 and odds ratio=2.9, 95% confidence interval 1.8-4.7, respectively) and also when using Google compared with Bing (odds ratio=3.1, 95% confidence interval 1.9-5.1). The increasing use of online information could play an important role in forming opinions. Web users should become more aware of the importance of finding reliable information, and health institutions should be

  19. A longitudinal analysis of search engine index size

    NARCIS (Netherlands)

    Bosch, A.P.J. van den; Bogers, T.; Kunder, M. de; Salah, A. A.; Tonta, Y.; Salah, A. A. A.; Sugimoto, C.; Al, U.

    2015-01-01

    One of the determining factors of the quality of Web search engines is the size and quality of their index. In addition to its influence on search result quality, the size of the indexed Web can also tell us something about which parts of the WWW are directly accessible to the everyday user. We

  20. Error Checking for Chinese Query by Mining Web Log

    Directory of Open Access Journals (Sweden)

    Jianyong Duan

    2015-01-01

    Full Text Available For the search engine, error-input query is a common phenomenon. This paper uses web log as the training set for the query error checking. Through the n-gram language model that is trained by web log, the queries are analyzed and checked. Some features including query words and their number are introduced into the model. At the same time data smoothing algorithm is used to solve data sparseness problem. It will improve the overall accuracy of the n-gram model. The experimental results show that it is effective.

  1. Radiation protection and environmental radioactivity. A voyage to the World Wide Web for beginners

    International Nuclear Information System (INIS)

    Weimer, S.

    1998-01-01

    According to the enormous growth of the Internet service 'World Wide Web' there is also a big growth in the number of web sites in connection with radiation protection. An introduction is given of some practical basis of the WWW. The structure of WWW addresses and navigating through the web with hyperlinks is explained. Further some search engines are presented. The paper lists a number of WWW addresses of interesting sites with radiological protection informations. (orig.) [de

  2. CentroidFold: a web server for RNA secondary structure prediction

    OpenAIRE

    Sato, Kengo; Hamada, Michiaki; Asai, Kiyoshi; Mituyama, Toutai

    2009-01-01

    The CentroidFold web server (http://www.ncrna.org/centroidfold/) is a web application for RNA secondary structure prediction powered by one of the most accurate prediction engine. The server accepts two kinds of sequence data: a single RNA sequence and a multiple alignment of RNA sequences. It responses with a prediction result shown as a popular base-pair notation and a graph representation. PDF version of the graph representation is also available. For a multiple alignment sequence, the ser...

  3. Increasing Scalability of Researcher Network Extraction from the Web

    Science.gov (United States)

    Asada, Yohei; Matsuo, Yutaka; Ishizuka, Mitsuru

    Social networks, which describe relations among people or organizations as a network, have recently attracted attention. With the help of a social network, we can analyze the structure of a community and thereby promote efficient communications within it. We investigate the problem of extracting a network of researchers from the Web, to assist efficient cooperation among researchers. Our method uses a search engine to get the cooccurences of names of two researchers and calculates the streangth of the relation between them. Then we label the relation by analyzing the Web pages in which these two names cooccur. Research on social network extraction using search engines as ours, is attracting attention in Japan as well as abroad. However, the former approaches issue too many queries to search engines to extract a large-scale network. In this paper, we propose a method to filter superfluous queries and facilitates the extraction of large-scale networks. By this method we are able to extract a network of around 3000-nodes. Our experimental results show that the proposed method reduces the number of queries significantly while preserving the quality of the network as compared to former methods.

  4. Analysing Parallel and Passive Web Browsing Behavior and its Effects on Website Metrics

    OpenAIRE

    von der Weth, Christian; Hauswirth, Manfred

    2014-01-01

    Getting deeper insights into the online browsing behavior of Web users has been a major research topic since the advent of the WWW. It provides useful information to optimize website design, Web browser design, search engines offerings, and online advertisement. We argue that new technologies and new services continue to have significant effects on the way how people browse the Web. For example, listening to music clips on YouTube or to a radio station on Last.fm does not require users to sit...

  5. Use of a web site to enhance criticality safety training

    International Nuclear Information System (INIS)

    Huang, Song T.; Morman, James A.

    2003-01-01

    Establishment of the NCSP (Nuclear Criticality Safety Program) website represents one attempt by the NCS (Nuclear Criticality Safety) community to meet the need to enhance communication and disseminate NCS information to a wider audience. With the aging work force in this important technical field, there is a common recognition of the need to capture the corporate knowledge of these people and provide an easily accessible, web-based training opportunity to those people just entering the field of criticality safety. A multimedia-based site can provide a wide range of possibilities for criticality safety training. Training modules could range from simple text-based material, similar to the NCSET (Nuclear Criticality Safety Engineer Training) modules, to interactive web-based training classes, to video lecture series. For example, the Los Alamos National Laboratory video series of interviews with pioneers of criticality safety could easily be incorporated into training modules. Obviously, the development of such a program depends largely upon the need and participation of experts who share the same vision and enthusiasm of training the next generation of criticality safety engineers. The NCSP website is just one example of the potential benefits that web-based training can offer. You are encouraged to browse the NCSP website at http://ncsp.llnl.gov. We solicit your ideas in the training of future NCS engineers and welcome your participation with us in developing future multimedia training modules. (author)

  6. Encouraging the learning of hydraulic engineering subjects in agricultural engineering schools

    Science.gov (United States)

    Rodríguez Sinobas, Leonor; Sánchez Calvo, Raúl

    2014-09-01

    Several methodological approaches to improve the understanding and motivation of students in Hydraulic Engineering courses have been adopted in the Agricultural Engineering School at Technical University of Madrid. During three years student's progress and satisfaction have been assessed by continuous monitoring and the use of 'online' and web tools in two undergraduate courses. Results from their application to encourage learning and communication skills in Hydraulic Engineering subjects are analysed and compared to the initial situation. Student's academic performance has improved since their application, but surveys made among students showed that not all the methodological proposals were perceived as beneficial. Their participation in the 'online', classroom and reading activities was low although they were well assessed.

  7. Penerapan Teknik Seo (Search Engine Optimization pada Website dalam Strategi Pemasaran melalui Internet

    Directory of Open Access Journals (Sweden)

    Rony Baskoro Lukito

    2014-12-01

    Full Text Available The purpose of this research is how to optimize a web design that can increase the number of visitors. The number of Internet users in the world continues to grow in line with advances in information technology. Products and services marketing media do not just use the printed and electronic media. Moreover, the cost of using the Internet as a medium of marketing is relatively inexpensive when compared to the use of television as a marketing medium. The penetration of the internet as a marketing medium lasted for 24 hours in different parts of the world. But to make an internet site into a site that is visited by many internet users, the site is not only good from the outside view only. Web sites that serve as a medium for marketing must be built with the correct rules, so that the Web site be optimal marketing media. One of the good rules in building the internet site as a marketing medium is how the content of such web sites indexed well in search engines like google. Search engine optimization in the index will be focused on the search engine Google for 83% of internet users across the world using Google as a search engine. Search engine optimization commonly known as SEO (Search Engine Optimization is an important rule that the internet site is easier to find a user with the desired keywords.

  8. Énergie et bois dans le territoire alpin : stratégies autour d'une ressource incertaine

    Directory of Open Access Journals (Sweden)

    Hélène Avocat*

    2012-02-01

    Full Text Available Depuis dix ans, le bois-énergie se développe dans les territoires alpins, sous l’impulsion de politiques volontaristes. Face à l'épuisement prochain des produits connexes de scierie, déjà largement utilisés dans la papeterie, la panneauterie et la granulation, la plaquette forestière est amenée à se développer pour des usages industriels ou locaux. Il s’agit d’une opportunité pour les territoires et les forêts alpines, dont la vulnérabilité doit cependant être prise en compte dans la délicate conciliation d'objectifs économiques et environnementaux. L’étude des différentes politiques et dispositifs montre des approches très différentes.  Cela peut générer des tensions sur la ressource et donner lieux à des comportements contradictoires avec le développement d’une énergie dite verte : allongements des distances de transports et donc des émissions de polluants, dégradation de l’environnement et de la multifonctionnalité des forêts, etc.

  9. WebVis: a hierarchical web homepage visualizer

    Science.gov (United States)

    Renteria, Jose C.; Lodha, Suresh K.

    2000-02-01

    WebVis, the Hierarchical Web Home Page Visualizer, is a tool for managing home web pages. The user can access this tool via the WWW and obtain a hierarchical visualization of one's home web pages. WebVis is a real time interactive tool that supports many different queries on the statistics of internal files such as sizes, age, and type. In addition, statistics on embedded information such as VRML files, Java applets, images and sound files can be extracted and queried. Results of these queries are visualized using color, shape and size of different nodes of the hierarchy. The visualization assists the user in a variety of task, such as quickly finding outdated information or locate large files. WebVIs is one solution to the growing web space maintenance problem. Implementation of WebVis is realized with Perl and Java. Perl pattern matching and file handling routines are used to collect and process web space linkage information and web document information. Java utilizes the collected information to produce visualization of the web space. Java also provides WebVis with real time interactivity, while running off the WWW. Some WebVis examples of home web page visualization are presented.

  10. initiative des conseils subventionnaires de la recherche scientifique ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Dorine Odongo

    1.6 Site Web. 1.7 Date de la constitution/de l'incorporation (MM/JJ/AAAA). 1.8 Catégorie (p. ex. institut de recherche,. ONG, think tank, établissement de recherche et d'enseignement universitaires). 1.9 Dirigeant de l'organisme partenaire. (nom complet, titre et adresse courriel). 2.0 Personne-ressource ou coordonnateur.

  11. African Health Systems Initiative (AHSI) | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    The African Health Systems Initiative (AHSI) is a 10-year Canadian International Development Agency (CIDA)-supported program for strengthening African-led ... Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les ...

  12. Aires protégées, gestion participative des ressources environnementales et développement touristique durable et viable dans les régions ultra-périphériques

    Directory of Open Access Journals (Sweden)

    Jean-Marie Breton

    2009-09-01

    Full Text Available Le tourisme est souvent présenté comme l’un des instruments d’un développement durable, même s’il connaît une expansion difficilement maîtrisable, au détriment du patrimoine environnemental, insulaire et littoral en particulier, comme dans les DOM-TOM.Le tourisme a des impacts, culturels et sociaux notamment, sur l’environnement. Les ressources du patrimoine alimentent de leur côté la demande et l’offre touristiques. Un tourisme assis sur une gestion ad hoc des ressources du patrimoine constitue un facteur puissant de durabilité du développement local. La soumission de l’activité touristique aux exigences de protection, de conservation et de gestion reproductible de la biodiversité et du patrimoine naturel, dans les aires protégées de la Caraïbe française en particulier, génère des approches, des stratégies et des comportements nouveaux. La démarche écotouristique appelle une gestion participative et intégrée des ressources et des espaces, et constitue un défi pour les opérateurs du tourisme comme pour les acteurs de l’environnement, et une opportunité de "réappropriation" de leur milieu de vie par les populations locales. Il faut alors en clarifier le concept et les implications ; puis en analyser les objectifs et les enjeux dans une perspective de développement durable.Tourism often appears as one a tool for a sustainable development, even if it is not easy to control, in the détriment of island and costal environment heritage, as in French overseas regions. Besides the cultural and social impacts of tourism upon environment, the heritage resources nuture the touristic request and offer. If based on an appropriate management of those resources, it may be a strong incentive for local sustainable development. The respect of protection, conservation and sustainable management of biodiversity and natural resources by tourism, especially in the overseas regions of French West Indies, produces new

  13. Interactive WebGL-based 3D visualizations for EAST experiment

    International Nuclear Information System (INIS)

    Xia, J.Y.; Xiao, B.J.; Li, Dan; Wang, K.R.

    2016-01-01

    Highlights: • Developing a user-friendly interface to visualize the EAST experimental data and the device is important to scientists and engineers. • The Web3D visualization system is based on HTML5 and WebGL, which runs without the need for plug-ins or third party components. • The interactive WebGL-based 3D visualization system is a web-portal integrating EAST 3D models, experimental data and plasma videos. • The original CAD model was discretized into different layers with different simplification to enable realistic rendering and improve performance. - Abstract: In recent years EAST (Experimental Advanced Superconducting Tokamak) experimental data are being shared and analyzed by an increasing number of international collaborators. Developing a user-friendly interface to visualize the data, meta data and the relevant parts of the device is becoming more and more important to aid scientists and engineers. Compared with the previous virtual EAST system based on VRML/Java3D [1] (Li et al., 2014), a new technology is being adopted to create a 3D visualization system based on HTML5 and WebGL, which runs without the need for plug-ins or third party components. The interactive WebGL-based 3D visualization system is a web-portal integrating EAST 3D models, experimental data and plasma videos. It offers a highly interactive interface allowing scientists to roam inside EAST device and view the complex 3-D structure of the machine. It includes technical details of the device and various diagnostic components, and provides visualization of diagnostic metadata with a direct link to each signal name and its stored data. In order for the quick access to the device 3D model, the original CAD model was discretized into different layers with different simplification. It allows users to search for plasma videos in any experiment and analyze the video frame by frame. In this paper, we present the implementation details to enable realistic rendering and improve performance.

  14. Interactive WebGL-based 3D visualizations for EAST experiment

    Energy Technology Data Exchange (ETDEWEB)

    Xia, J.Y., E-mail: jyxia@ipp.ac.cn [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui (China); University of Science and Technology of China, Hefei, Anhui (China); Xiao, B.J. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui (China); University of Science and Technology of China, Hefei, Anhui (China); Li, Dan [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui (China); Wang, K.R. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui (China); University of Science and Technology of China, Hefei, Anhui (China)

    2016-11-15

    Highlights: • Developing a user-friendly interface to visualize the EAST experimental data and the device is important to scientists and engineers. • The Web3D visualization system is based on HTML5 and WebGL, which runs without the need for plug-ins or third party components. • The interactive WebGL-based 3D visualization system is a web-portal integrating EAST 3D models, experimental data and plasma videos. • The original CAD model was discretized into different layers with different simplification to enable realistic rendering and improve performance. - Abstract: In recent years EAST (Experimental Advanced Superconducting Tokamak) experimental data are being shared and analyzed by an increasing number of international collaborators. Developing a user-friendly interface to visualize the data, meta data and the relevant parts of the device is becoming more and more important to aid scientists and engineers. Compared with the previous virtual EAST system based on VRML/Java3D [1] (Li et al., 2014), a new technology is being adopted to create a 3D visualization system based on HTML5 and WebGL, which runs without the need for plug-ins or third party components. The interactive WebGL-based 3D visualization system is a web-portal integrating EAST 3D models, experimental data and plasma videos. It offers a highly interactive interface allowing scientists to roam inside EAST device and view the complex 3-D structure of the machine. It includes technical details of the device and various diagnostic components, and provides visualization of diagnostic metadata with a direct link to each signal name and its stored data. In order for the quick access to the device 3D model, the original CAD model was discretized into different layers with different simplification. It allows users to search for plasma videos in any experiment and analyze the video frame by frame. In this paper, we present the implementation details to enable realistic rendering and improve performance.

  15. Near-Duplicate Web Page Detection: An Efficient Approach Using Clustering, Sentence Feature and Fingerprinting

    Directory of Open Access Journals (Sweden)

    J. Prasanna Kumar

    2013-02-01

    Full Text Available Duplicate and near-duplicate web pages are the chief concerns for web search engines. In reality, they incur enormous space to store the indexes, ultimately slowing down and increasing the cost of serving results. A variety of techniques have been developed to identify pairs of web pages that are aldquo;similarardquo; to each other. The problem of finding near-duplicate web pages has been a subject of research in the database and web-search communities for some years. In order to identify the near duplicate web pages, we make use of sentence level features along with fingerprinting method. When a large number of web documents are in consideration for the detection of web pages, then at first, we use K-mode clustering and subsequently sentence feature and fingerprint comparison is used. Using these steps, we exactly identify the near duplicate web pages in an efficient manner. The experimentation is carried out on the web page collections and the results ensured the efficiency of the proposed approach in detecting the near duplicate web pages.

  16. Noesis: Ontology based Scoped Search Engine and Resource Aggregator for Atmospheric Science

    Science.gov (United States)

    Ramachandran, R.; Movva, S.; Li, X.; Cherukuri, P.; Graves, S.

    2006-12-01

    The goal for search engines is to return results that are both accurate and complete. The search engines should find only what you really want and find everything you really want. Search engines (even meta search engines) lack semantics. The basis for search is simply based on string matching between the user's query term and the resource database and the semantics associated with the search string is not captured. For example, if an atmospheric scientist is searching for "pressure" related web resources, most search engines return inaccurate results such as web resources related to blood pressure. In this presentation Noesis, which is a meta-search engine and a resource aggregator that uses domain ontologies to provide scoped search capabilities will be described. Noesis uses domain ontologies to help the user scope the search query to ensure that the search results are both accurate and complete. The domain ontologies guide the user to refine their search query and thereby reduce the user's burden of experimenting with different search strings. Semantics are captured by refining the query terms to cover synonyms, specializations, generalizations and related concepts. Noesis also serves as a resource aggregator. It categorizes the search results from different online resources such as education materials, publications, datasets, web search engines that might be of interest to the user.

  17. Meta-Search Utilizing Evolitionary Recommendation: A Web Search Architecture Proposal

    Czech Academy of Sciences Publication Activity Database

    Húsek, Dušan; Keyhanipour, A.; Krömer, P.; Moshiri, B.; Owais, S.; Snášel, V.

    2008-01-01

    Roč. 33, - (2008), s. 189-200 ISSN 1870-4069 Institutional research plan: CEZ:AV0Z10300504 Keywords : web search * meta-search engine * intelligent re-ranking * ordered weighted averaging * Boolean search queries optimizing Subject RIV: IN - Informatics, Computer Science

  18. Variability of patient spine education by Internet search engine.

    Science.gov (United States)

    Ghobrial, George M; Mehdi, Angud; Maltenfort, Mitchell; Sharan, Ashwini D; Harrop, James S

    2014-03-01

    Patients are increasingly reliant upon the Internet as a primary source of medical information. The educational experience varies by search engine, search term, and changes daily. There are no tools for critical evaluation of spinal surgery websites. To highlight the variability between common search engines for the same search terms. To detect bias, by prevalence of specific kinds of websites for certain spinal disorders. Demonstrate a simple scoring system of spinal disorder website for patient use, to maximize the quality of information exposed to the patient. Ten common search terms were used to query three of the most common search engines. The top fifty results of each query were tabulated. A negative binomial regression was performed to highlight the variation across each search engine. Google was more likely than Bing and Yahoo search engines to return hospital ads (P=0.002) and more likely to return scholarly sites of peer-reviewed lite (P=0.003). Educational web sites, surgical group sites, and online web communities had a significantly higher likelihood of returning on any search, regardless of search engine, or search string (P=0.007). Likewise, professional websites, including hospital run, industry sponsored, legal, and peer-reviewed web pages were less likely to be found on a search overall, regardless of engine and search string (P=0.078). The Internet is a rapidly growing body of medical information which can serve as a useful tool for patient education. High quality information is readily available, provided that the patient uses a consistent, focused metric for evaluating online spine surgery information, as there is a clear variability in the way search engines present information to the patient. Published by Elsevier B.V.

  19. GeoSearcher: Location-Based Ranking of Search Engine Results.

    Science.gov (United States)

    Watters, Carolyn; Amoudi, Ghada

    2003-01-01

    Discussion of Web queries with geospatial dimensions focuses on an algorithm that assigns location coordinates dynamically to Web sites based on the URL. Describes a prototype search system that uses the algorithm to re-rank search engine results for queries with a geospatial dimension, thus providing an alternative ranking order for search engine…

  20. Easy web interfaces to IDL code for NSTX Data Analysis

    International Nuclear Information System (INIS)

    Davis, W.M.

    2012-01-01

    Highlights: ► Web interfaces to IDL code can be developed quickly. ► Dozens of Web Tools are used effectively on NSTX for Data Analysis. ► Web interfaces are easier to use than X-window applications. - Abstract: Reusing code is a well-known Software Engineering practice to substantially increase the efficiency of code production, as well as to reduce errors and debugging time. A variety of “Web Tools” for the analysis and display of raw and analyzed physics data are in use on NSTX [1], and new ones can be produced quickly from existing IDL [2] code. A Web Tool with only a few inputs, and which calls an IDL routine written in the proper style, can be created in less than an hour; more typical Web Tools with dozens of inputs, and the need for some adaptation of existing IDL code, can be working in a day or so. Efficiency is also increased for users of Web Tools because of the familiar interface of the web browser, and not needing X-windows, or accounts and passwords, when used within our firewall. Web Tools were adapted for use by PPPL physicists accessing EAST data stored in MDSplus with only a few man-weeks of effort; adapting to additional sites should now be even easier. An overview of Web Tools in use on NSTX, and a list of the most useful features, is also presented.

  1. An Iterative and Incremental Approach for E-Learning Ontology Engineering

    Directory of Open Access Journals (Sweden)

    Sudath Rohitha Heiyanthuduwage

    2009-03-01

    Full Text Available Abstract - There is a boost in the interest on ontology with the developments in Semantic Web technologies. Ontologies play a vital role in semantic web. Even though there is lot of work done on ontology, still a standard framework for ontology engineering has not been defined. Even though current ontology engineering methodologies are available they need improvements. The effort of our work is to integrate various methods, techniques, tools and etc to different stages of proposed ontology engineering life cycle to create a comprehensive framework for ontology engineering. Current methodologies discuss ontology engineering stages and collaborative environments with user collaboration. However, discussion on increasing effectiveness and correct inference has been given less attention. More over, these methodologies provide little discussion on usability of domain ontologies. We consider these aspects as more important in our work. Also, ontology engineering has been done for various domains and for various purposes. Our effort is to propose an iterative and incremental approach for ontology engineering especially for e-learning domain with the intention of achieving a higher usability and effectiveness of e-learning systems. This paper introduces different aspects of the proposed ontology engineering framework and evaluation of it.

  2. The rendering context for stereoscopic 3D web

    Science.gov (United States)

    Chen, Qinshui; Wang, Wenmin; Wang, Ronggang

    2014-03-01

    3D technologies on the Web has been studied for many years, but they are basically monoscopic 3D. With the stereoscopic technology gradually maturing, we are researching to integrate the binocular 3D technology into the Web, creating a stereoscopic 3D browser that will provide users with a brand new experience of human-computer interaction. In this paper, we propose a novel approach to apply stereoscopy technologies to the CSS3 3D Transforms. Under our model, each element can create or participate in a stereoscopic 3D rendering context, in which 3D Transforms such as scaling, translation and rotation, can be applied and be perceived in a truly 3D space. We first discuss the underlying principles of stereoscopy. After that we discuss how these principles can be applied to the Web. A stereoscopic 3D browser with backward compatibility is also created for demonstration purposes. We take advantage of the open-source WebKit project, integrating the 3D display ability into the rendering engine of the web browser. For each 3D web page, our 3D browser will create two slightly different images, each representing the left-eye view and right-eye view, both to be combined on the 3D display to generate the illusion of depth. And as the result turns out, elements can be manipulated in a truly 3D space.

  3. Web-based control application using WebSocket

    International Nuclear Information System (INIS)

    Furukawa, Y.

    2012-01-01

    The WebSocket allows asynchronous full-duplex communication between a Web-based (i.e. Java Script-based) application and a Web-server. WebSocket started as a part of HTML5 standardization but has now been separated from HTML5 and has been developed independently. Using WebSocket, it becomes easy to develop platform independent presentation layer applications for accelerator and beamline control software. In addition, a Web browser is the only application program that needs to be installed on client computer. The WebSocket-based applications communicate with the WebSocket server using simple text-based messages, so WebSocket is applicable message-based control system like MADOCA, which was developed for the SPring-8 control system. A simple WebSocket server for the MADOCA control system and a simple motor control application were successfully made as a first trial of the WebSocket control application. Using Google-Chrome (version 13.0) on Debian/Linux and Windows 7, Opera (version 11.0) on Debian/Linux and Safari (version 5.0.3) on Mac OS X as clients, the motors can be controlled using a WebSocket-based Web-application. Diffractometer control application use in synchrotron radiation diffraction experiment was also developed. (author)

  4. Web based electronic logbook and experiment run database viewer for Alcator C-Mod

    International Nuclear Information System (INIS)

    Fredian, T.W.; Stillerman, J.A.

    2006-01-01

    Since 1991, the scientists and engineers at the Alcator C-Mod experiment at MIT have been recording text entries about the experiments being performed in an electronic logbook. In addition, separate documents such as run plans, run summaries and experimental proposals have been created and stored in a variety of formats in computer files. This information has now been organized and made available via any modern web browser. The new web based interface permits the user to browse through all the logbook entries, run information and even view some key data traces of the experiment. Since this information is being catalogued by Internet search engines, these tools can also be used to quickly locate information. The web based logbook and run information interface provides some additional capabilities. Once logged into the web site, users can add, delete or modify logbook entries directly from their browser. The logbook window on their browser also provides dynamic updating when any new logbook entries are made. There is also live C-Mod operation status information with optional audio announcements available. The user can receive the same state change announcements such as 'entering init' or 'entering pulse' as they would if they were sitting in the C-Mod control room. This paper will describe the functionality of the web based logbook and how it was implemented

  5. A web-based, collaborative modeling, simulation, and parallel computing environment for electromechanical systems

    Directory of Open Access Journals (Sweden)

    Xiaoliang Yin

    2015-03-01

    Full Text Available Complex electromechanical system is usually composed of multiple components from different domains, including mechanical, electronic, hydraulic, control, and so on. Modeling and simulation for electromechanical system on a unified platform is one of the research hotspots in system engineering at present. It is also the development trend of the design for complex electromechanical system. The unified modeling techniques and tools based on Modelica language provide a satisfactory solution. To meet with the requirements of collaborative modeling, simulation, and parallel computing for complex electromechanical systems based on Modelica, a general web-based modeling and simulation prototype environment, namely, WebMWorks, is designed and implemented. Based on the rich Internet application technologies, an interactive graphic user interface for modeling and post-processing on web browser was implemented; with the collaborative design module, the environment supports top-down, concurrent modeling and team cooperation; additionally, service-oriented architecture–based architecture was applied to supply compiling and solving services which run on cloud-like servers, so the environment can manage and dispatch large-scale simulation tasks in parallel on multiple computing servers simultaneously. An engineering application about pure electric vehicle is tested on WebMWorks. The results of simulation and parametric experiment demonstrate that the tested web-based environment can effectively shorten the design cycle of the complex electromechanical system.

  6. Reflections on New Search Engine 新型搜索引擎畅想

    OpenAIRE

    Huang, Jiannian

    2007-01-01

    English abstract]Quick increment of need on internet information resources leads to a rush of search engines. This article introduces some new type of search engines which is appearing and will appear. These search engines includes as follows: grey document search engine, invisible web search engine, knowledge discovery search engine, clustering meta search engine, academic clustering search engine, conception comparison and conception analogy search engine, consultation search engine, teachi...

  7. 77 FR 9868 - Airworthiness Directives; Honeywell International Inc. Turbofan Engines

    Science.gov (United States)

    2012-02-21

    ... Airworthiness Directives; Honeywell International Inc. Turbofan Engines AGENCY: Federal Aviation Administration... -5BR series turbofan engines. This proposed AD was prompted by a report of a rim/web separation of a..., -4R, -5AR, -5BR, and -5R series turbofan engines, with an LPT1 rotor assembly, P/N 3074748-4, 3074748...

  8. An evaluation of the quality of Turkish community pharmacy web sites concerning HON principles.

    Science.gov (United States)

    Yegenoglu, Selen; Sozen, Bilge; Aslan, Dilek; Calgan, Zeynep; Cagirci, Simge

    2008-05-01

    The objective of this study was to find all the existing Web sites of Turkish community pharmacies and evaluate their "quality" in terms of Health on the Net (HON) Code of conduct principles. Multiple Internet search engines were used (google.com, yahoo.com, altavista.com, msn.com). While searching on the Internet, "eczane (pharmacy)" and "eczanesi (pharmacy of)" key words were used. The Internet search lasted for 2 months starting from March 1, 2007 until May 1, 2007. SPSS ver. 11.5 statistical program (SPSS, Inc., Chicago, IL) was used for data entry and analysis. At the end of the Internet search via all the indicated search engines, a total of 203 (all different from each other) community pharmacy Web sites were determined; of these, 14 were under construction and 6 were not accessible. As a result, 183 community pharmacy Web sites were included in the study. All of the Web sites could be accessed (100%). However, the availability of some characteristics of the pharmacies were quite poor. None of the pharmacies met all of the HON principles. Only 11 Web sites were appropriate in terms of complementarity (6.0%). Confidentiality criteria was met by only 14 pharmacies (7.7%). Nine pharmacies (4.9%) completed the "attribution" criteria. Among 183 pharmacy Web sites, the most met HON principle was the "transparency of authorship" (69 pharmacy Web sites; 37.7%). Because of the results of our study, the Turkish Pharmacists Association can take a pioneer role to apply some principles such as HON code of conduct in order to increase the quality of Turkish community pharmacists' Web sites.

  9. Semantically-Enabled Sensor Plug & Play for the Sensor Web

    Science.gov (United States)

    Bröring, Arne; Maúe, Patrick; Janowicz, Krzysztof; Nüst, Daniel; Malewski, Christian

    2011-01-01

    Environmental sensors have continuously improved by becoming smaller, cheaper, and more intelligent over the past years. As consequence of these technological advancements, sensors are increasingly deployed to monitor our environment. The large variety of available sensor types with often incompatible protocols complicates the integration of sensors into observing systems. The standardized Web service interfaces and data encodings defined within OGC’s Sensor Web Enablement (SWE) framework make sensors available over the Web and hide the heterogeneous sensor protocols from applications. So far, the SWE framework does not describe how to integrate sensors on-the-fly with minimal human intervention. The driver software which enables access to sensors has to be implemented and the measured sensor data has to be manually mapped to the SWE models. In this article we introduce a Sensor Plug & Play infrastructure for the Sensor Web by combining (1) semantic matchmaking functionality, (2) a publish/subscribe mechanism underlying the SensorWeb, as well as (3) a model for the declarative description of sensor interfaces which serves as a generic driver mechanism. We implement and evaluate our approach by applying it to an oil spill scenario. The matchmaking is realized using existing ontologies and reasoning engines and provides a strong case for the semantic integration capabilities provided by Semantic Web research. PMID:22164033

  10. A resource-oriented architecture for a Geospatial Web

    Science.gov (United States)

    Mazzetti, Paolo; Nativi, Stefano

    2010-05-01

    , systems using the same Web technologies and specifications but according to a different architectural style, despite their usefulness, should not be considered part of the Web. If the REST style captures the significant Web characteristics, then, in order to build a Geospatial Web it is necessary that its architecture satisfies all the REST constraints. One of them is of particular importance: the adoption of a Uniform Interface. It prescribes that all the geospatial resources must be accessed through the same interface; moreover according to the REST style this interface must satisfy four further constraints: a) identification of resources; b) manipulation of resources through representations; c) self-descriptive messages; and, d) hypermedia as the engine of application state. In the Web, the uniform interface provides basic operations which are meaningful for generic resources. They typically implement the CRUD pattern (Create-Retrieve-Update-Delete) which demonstrated to be flexible and powerful in several general-purpose contexts (e.g. filesystem management, SQL for database management systems, etc.). Restricting the scope to a subset of resources it would be possible to identify other generic actions which are meaningful for all of them. For example for geospatial resources, subsetting, resampling, interpolation and coordinate reference systems transformations functionalities are candidate functionalities for a uniform interface. However an investigation is needed to clarify the semantics of those actions for different resources, and consequently if they can really ascend the role of generic interface operation. Concerning the point a), (identification of resources), it is required that every resource addressable in the Geospatial Web has its own identifier (e.g. a URI). This allows to implement citation and re-use of resources, simply providing the URI. OPeNDAP and KVP encodings of OGC data access services specifications might provide a basis for it. Concerning

  11. Regulating Search Engines: Taking Stock And Looking Ahead

    OpenAIRE

    Gasser, Urs

    2006-01-01

    Since the creation of the first pre-Web Internet search engines in the early 1990s, search engines have become almost as important as email as a primary online activity. Arguably, search engines are among the most important gatekeepers in today's digitally networked environment. Thus, it does not come as a surprise that the evolution of search technology and the diffusion of search engines have been accompanied by a series of conflicts among stakeholders such as search operators, content crea...

  12. Using declarative workflow languages to develop process-centric web applications

    NARCIS (Netherlands)

    Bernardi, M.L.; Cimitile, M.; Di Lucca, G.A.; Maggi, F.M.

    2012-01-01

    Nowadays, process-centric Web Applications (WAs) are extensively used in contexts where multi-user, coordinated work is required. Recently, Model Driven Engineering (MDE) techniques have been investigated for the development of this kind of applications. However, there are still some open issues.

  13. An Innovative Approach for online Meta Search Engine Optimization

    OpenAIRE

    Manral, Jai; Hossain, Mohammed Alamgir

    2015-01-01

    This paper presents an approach to identify efficient techniques used in Web Search Engine Optimization (SEO). Understanding SEO factors which can influence page ranking in search engine is significant for webmasters who wish to attract large number of users to their website. Different from previous relevant research, in this study we developed an intelligent Meta search engine which aggregates results from various search engines and ranks them based on several important SEO parameters. The r...

  14. What Snippets Say About Pages in Federated Web Search

    NARCIS (Netherlands)

    Demeester, Thomas; Nguyen, Dong-Phuong; Trieschnigg, Rudolf Berend; Develder, Chris; Hiemstra, Djoerd; Hou, Yuexian; Nie, Jian-Yun; Sun, Le; Wang, Bo; Zhang, Peng

    2012-01-01

    What is the likelihood that a Web page is considered relevant to a query, given the relevance assessment of the corresponding snippet? Using a new federated IR test collection that contains search results from over a hundred search engines on the internet, we are able to investigate such research

  15. Radiation protection and environmental radioactivity. A voyage to the World Wide Web for beginners; Strahlenschutz und Umweltradioaktivitaet im Internet. Eine Reise in das World Wide Web fuer Anfaenger

    Energy Technology Data Exchange (ETDEWEB)

    Weimer, S [Landesanstalt fuer Umweltschutz Baden-Wuerttemberg, Referat ' ' Umweltradioaktivitaet, Strahlenschutz' ' (Germany)

    1998-07-01

    According to the enormous growth of the Internet service 'World Wide Web' there is also a big growth in the number of web sites in connection with radiation protection. An introduction is given of some practical basis of the WWW. The structure of WWW addresses and navigating through the web with hyperlinks is explained. Further some search engines are presented. The paper lists a number of WWW addresses of interesting sites with radiological protection informations. (orig.) [German] Mit dem rasanten Wachstum des Internet-Dienstes 'World Wide Web' ist auch das Angebot von Web-Seiten im Bereich Strahlenschutz stark gewachsen. Es wird eine Einfuehrung in die wichtigsten praktischen Grundlagen des WWW gegeben. Es wird der Aufbau der WWW-Adressen erklaert und das Navigieren mit Hyperlinks. Ausserdem werden einige Suchmaschinen vorgestellt. Der Beitrag stellt eine groessere Zahl an WWW-Adressen zu interessanten Seiten mit Strahlenschutzinformationen zur Verfuegung. (orig.)

  16. A NEW APPROACH FOR IMPROVING QUALITY OF WEB APPLICATIONS USING DESIGN PATTERNS

    OpenAIRE

    J. Srikanth R. Savithri

    2012-01-01

    Design patterns are descriptions of communicating objects and classes that are customized to solve a general design problem in a particular context, they describes the problem and its corresponding solution. Professional software engineers always use Design patterns for introducing abstractions in software and by the way they can build complex web applications. The right adoption of Design Patterns while designing web applications can promote the factors like reusability and consistency of th...

  17. Tracing agents and other automatic sampling procedures for the World Wide Web

    OpenAIRE

    Aguillo, Isidro F.

    1999-01-01

    Many of the search engines and recovery tools are not suitable to make samples of web resources for quantitative analysis. The increasing size of the web and its hypertextual nature offer opportunities for a novel approach. A new generation of recovering tools involving tracing hypertext links from selected sites are very promising. Offering capabilities to automate tasks Extracting large samples of high pertinence Ready to use in standard database formats Selecting additional resour...

  18. An ant colony optimization based feature selection for web page classification.

    Science.gov (United States)

    Saraç, Esra; Özel, Selma Ayşe

    2014-01-01

    The increased popularity of the web has caused the inclusion of huge amount of information to the web, and as a result of this explosive information growth, automated web page classification systems are needed to improve search engines' performance. Web pages have a large number of features such as HTML/XML tags, URLs, hyperlinks, and text contents that should be considered during an automated classification process. The aim of this study is to reduce the number of features to be used to improve runtime and accuracy of the classification of web pages. In this study, we used an ant colony optimization (ACO) algorithm to select the best features, and then we applied the well-known C4.5, naive Bayes, and k nearest neighbor classifiers to assign class labels to web pages. We used the WebKB and Conference datasets in our experiments, and we showed that using the ACO for feature selection improves both accuracy and runtime performance of classification. We also showed that the proposed ACO based algorithm can select better features with respect to the well-known information gain and chi square feature selection methods.

  19. Impact of Commercial Search Engines and International Databases on Engineering Teaching and Research

    Science.gov (United States)

    Chanson, Hubert

    2007-01-01

    For the last three decades, the engineering higher education and professional environments have been completely transformed by the "electronic/digital information revolution" that has included the introduction of personal computer, the development of email and world wide web, and broadband Internet connections at home. Herein the writer compares…

  20. Internet-based dimensional verification system for reverse engineering processes

    International Nuclear Information System (INIS)

    Song, In Ho; Kim, Kyung Don; Chung, Sung Chong

    2008-01-01

    This paper proposes a design methodology for a Web-based collaborative system applicable to reverse engineering processes in a distributed environment. By using the developed system, design reviewers of new products are able to confirm geometric shapes, inspect dimensional information of products through measured point data, and exchange views with other design reviewers on the Web. In addition, it is applicable to verifying accuracy of production processes by manufacturing engineers. Functional requirements for designing this Web-based dimensional verification system are described in this paper. ActiveX-server architecture and OpenGL plug-in methods using ActiveX controls realize the proposed system. In the developed system, visualization and dimensional inspection of the measured point data are done directly on the Web: conversion of the point data into a CAD file or a VRML form is unnecessary. Dimensional verification results and design modification ideas are uploaded to markups and/or XML files during collaboration processes. Collaborators review the markup results created by others to produce a good design result on the Web. The use of XML files allows information sharing on the Web to be independent of the platform of the developed system. It is possible to diversify the information sharing capability among design collaborators. Validity and effectiveness of the developed system has been confirmed by case studies

  1. Internet-based dimensional verification system for reverse engineering processes

    Energy Technology Data Exchange (ETDEWEB)

    Song, In Ho [Ajou University, Suwon (Korea, Republic of); Kim, Kyung Don [Small Business Corporation, Suwon (Korea, Republic of); Chung, Sung Chong [Hanyang University, Seoul (Korea, Republic of)

    2008-07-15

    This paper proposes a design methodology for a Web-based collaborative system applicable to reverse engineering processes in a distributed environment. By using the developed system, design reviewers of new products are able to confirm geometric shapes, inspect dimensional information of products through measured point data, and exchange views with other design reviewers on the Web. In addition, it is applicable to verifying accuracy of production processes by manufacturing engineers. Functional requirements for designing this Web-based dimensional verification system are described in this paper. ActiveX-server architecture and OpenGL plug-in methods using ActiveX controls realize the proposed system. In the developed system, visualization and dimensional inspection of the measured point data are done directly on the Web: conversion of the point data into a CAD file or a VRML form is unnecessary. Dimensional verification results and design modification ideas are uploaded to markups and/or XML files during collaboration processes. Collaborators review the markup results created by others to produce a good design result on the Web. The use of XML files allows information sharing on the Web to be independent of the platform of the developed system. It is possible to diversify the information sharing capability among design collaborators. Validity and effectiveness of the developed system has been confirmed by case studies

  2. [Improving vaccination social marketing by monitoring the web].

    Science.gov (United States)

    Ferro, A; Bonanni, P; Castiglia, P; Montante, A; Colucci, M; Miotto, S; Siddu, A; Murrone, L; Baldo, V

    2014-01-01

    Immunisation is one of the most important and cost- effective interventions in Public Health because of their significant positive impact on population health.However, since Jenner's discovery there always been a lively debate between supporters and opponents of vaccination; Today the antivaccination movement spreads its message mostly on the web, disseminating inaccurate data through blogs and forums, increasing vaccine rejection.In this context, the Società Italiana di Igiene (SItI) created a web project in order to fight the misinformation on the web regarding vaccinations, through a series of information tools, including scientific articles, educational information, video and multimedia presentations The web portal (http://www.vaccinarsi.org) was published in May 2013 and now is already available over one hundred web pages related to vaccinations Recently a Forum, a periodic newsletter and a Twitter page have been created. There has been an average of 10,000 hits per month. Currently our users are mostly healthcare professionals. The visibility of the site is very good and it currently ranks first in the Google's search engine, taping the word "vaccinarsi" The results of the first four months of activity are extremely encouraging and show the importance of this project; furthermore the application for quality certification by independent international Organizations has been submitted.

  3. [Biomedical information on the internet using search engines. A one-year trial].

    Science.gov (United States)

    Corrao, Salvatore; Leone, Francesco; Arnone, Sabrina

    2004-01-01

    The internet is a communication medium and content distributor that provide information in the general sense but it could be of great utility regarding as the search and retrieval of biomedical information. Search engines represent a great deal to rapidly find information on the net. However, we do not know whether general search engines and meta-search ones are reliable in order to find useful and validated biomedical information. The aim of our study was to verify the reproducibility of a search by key-words (pediatric or evidence) using 9 international search engines and 1 meta-search engine at the baseline and after a one year period. We analysed the first 20 citations as output of each searching. We evaluated the formal quality of Web-sites and their domain extensions. Moreover, we compared the output of each search at the start of this study and after a one year period and we considered as a criterion of reliability the number of Web-sites cited again. We found some interesting results that are reported throughout the text. Our findings point out an extreme dynamicity of the information on the Web and, for this reason, we advice a great caution when someone want to use search and meta-search engines as a tool for searching and retrieve reliable biomedical information. On the other hand, some search and meta-search engines could be very useful as a first step searching for defining better a search and, moreover, for finding institutional Web-sites too. This paper allows to know a more conscious approach to the internet biomedical information universe.

  4. Eysenbach, Tuische and Diepgen’s Evaluation of Web Searching for Identifying Unpublished Studies for Systematic Reviews: An Innovative Study Which is Still Relevant Today.

    Directory of Open Access Journals (Sweden)

    Simon Briscoe

    2016-09-01

    Full Text Available A Review of: Eysenbach, G., Tuische, J. & Diepgen, T.L. (2001. Evaluation of the usefulness of Internet searches to identify unpublished clinical trials for systematic reviews. Medical Informatics and the Internet in Medicine, 26(3, 203-218. http://dx.doi.org/10.1080/14639230110075459 Objective – To consider whether web searching is a useful method for identifying unpublished studies for inclusion in systematic reviews. Design – Retrospective web searches using the AltaVista search engine were conducted to identify unpublished studies – specifically, clinical trials – for systematic reviews which did not use a web search engine. Setting – The Department of Clinical Social Medicine, University of Heidelberg, Germany. Subjects – n/a Methods – Pilot testing of 11 web search engines was carried out to determine which could handle complex search queries. Pre-specified search requirements included the ability to handle Boolean and proximity operators, and truncation searching. A total of seven Cochrane systematic reviews were randomly selected from the Cochrane Library Issue 2, 1998, and their bibliographic database search strategies were adapted for the web search engine, AltaVista. Each adaptation combined search terms for the intervention, problem, and study type in the systematic review. Hints to planned, ongoing, or unpublished studies retrieved by the search engine, which were not cited in the systematic reviews, were followed up by visiting websites and contacting authors for further details when required. The authors of the systematic reviews were then contacted and asked to comment on the potential relevance of the identified studies. Main Results – Hints to 14 unpublished and potentially relevant studies, corresponding to 4 of the 7 randomly selected Cochrane systematic reviews, were identified. Out of the 14 studies, 2 were considered irrelevant to the corresponding systematic review by the systematic review authors. The

  5. Facilitation by ecosystem engineers enhances nutrient effects in an intertidal system

    NARCIS (Netherlands)

    Eriksson, B.K.; Westra, J.; van Gerwen, I.; Weerman, E.; van der Heide, T.; van der Zee, E.; van de Koppel, J.; Olff, H.; Piersma, T.; Donadi, S.

    2017-01-01

    Ecosystem engineering research has recently demonstrated the fundamental importance ofnon-trophic interactions for food-web structure. Particularly, by creating benign conditions in stressfulenvironments, ecosystem engineers create hot beds of elevated levels of recruitment, growth, and survivalof

  6. Using the Spanish Online Resource Aula Virtual de Español (AVE to Promote a Blended Teaching Approach in High School Spanish Language Classrooms / Utilisation de la ressource en ligne espagnole AVE pour favoriser l’approche de l’enseignement hybride

    Directory of Open Access Journals (Sweden)

    Martine Pellerin

    2012-02-01

    Full Text Available The study explores the effectiveness of the implementation of blended teaching (BT by combining the Spanish online resource Aula Virtual de Español (AVE with the face-to-face (F2F delivery approach in second language Spanish programs in two high schools in Alberta, Canada. Findings demonstrate the effectiveness of combining the online resource AVE to the F2F teaching approach to promote BT in the Spanish language classroom. The use of BT approach in the language classroom had a positive impact on the students’ attitudes towards the study of the language, the students’ motivation and their participation levels in class, as well as their use of the target language in the classroom. Moreover, the multimodal experiences provided by the use of the online AVE resource combined with the F2F delivery approach responded more to the different learners learning styles and specific needs. Finally, the use of online AVE in conjunction with F2F teaching was also perceived as an effective tool in the preparation for the International Spanish Diplomas (DELE taken by the students in the more advanced Spanish classes. La présente étude explore l’efficacité de l’enseignement hybride combinant l’utilisation de la ressource espagnole en ligne Aula Virtual de Español (AVE et l’interaction face à face dans les programmes d’enseignement de l’espagnol, langue seconde, dans deux écoles secondaires de l’Alberta (Canada. Les résultats démontrent l’efficacité de la combinaison de la ressource en ligne AVE à la prestation face à face pour favoriser l’approche de l’enseignement hybride dans les cours d’espagnol. L’utilisation de l’approche de l’enseignement hybride dans le cours de langue a eu une incidence positive sur l’attitude des élèves relativement à l’apprentissage de la langue, la motivation des élèves et leur taux de participation en classe, ainsi que leur utilisation de la langue d’apprentissage dans la classe

  7. Beginning ASPNET Web Pages with WebMatrix

    CERN Document Server

    Brind, Mike

    2011-01-01

    Learn to build dynamic web sites with Microsoft WebMatrix Microsoft WebMatrix is designed to make developing dynamic ASP.NET web sites much easier. This complete Wrox guide shows you what it is, how it works, and how to get the best from it right away. It covers all the basic foundations and also introduces HTML, CSS, and Ajax using jQuery, giving beginning programmers a firm foundation for building dynamic web sites.Examines how WebMatrix is expected to become the new recommended entry-level tool for developing web sites using ASP.NETArms beginning programmers, students, and educators with al

  8. Non-visual Web Browsing: Beyond Web Accessibility.

    Science.gov (United States)

    Ramakrishnan, I V; Ashok, Vikas; Billah, Syed Masum

    2017-07-01

    People with vision impairments typically use screen readers to browse the Web. To facilitate non-visual browsing, web sites must be made accessible to screen readers, i.e., all the visible elements in the web site must be readable by the screen reader. But even if web sites are accessible, screen-reader users may not find them easy to use and/or easy to navigate. For example, they may not be able to locate the desired information without having to listen to a lot of irrelevant contents. These issues go beyond web accessibility and directly impact web usability. Several techniques have been reported in the accessibility literature for making the Web usable for screen reading. This paper is a review of these techniques. Interestingly, the review reveals that understanding the semantics of the web content is the overarching theme that drives these techniques for improving web usability.

  9. [Multi-course web-learning system for supporting students of medical technology].

    Science.gov (United States)

    Honma, Satoru; Wakamatsu, Hidetoshi; Kurihara, Yuriko; Yoshida, Shoko; Sakai, Nobue

    2013-05-01

    Web-Learning system was developed to support the self-learning for national qualification examination and medical engineering practice by students. The results from small tests in various situations suggest that the unit-learning systems are more effective, especially for the early stage of their self learning. In addition, the answers of some questionnaire suggest that the students' motivation has a certain relation with the number of the questions in the system. That is, the less number of the questions, the easier they are worked out with a higher learning motivation by students. Thus, the system was extended to enable students to study various subjects and/or units by themselves. The system enables them to have learning effects more easily by the exercise during lectures. The effectiveness of the system was investigated on medical associated subjects installed in the system. The concerning questions of Medical engineering and Pathological histology are adequately divided into several groups, of which sixteen Web-Learning subsystems were well composed for their practical application. Our concerning various unit-learning systems were confirmed much useful for most students comparing with the case of the overall Web-Learning system.

  10. Minimalist instruction for learning to search the World Wide Web

    NARCIS (Netherlands)

    Lazonder, Adrianus W.

    2001-01-01

    This study examined the efficacy of minimalist instruction to develop self-regulatory skills involved in Web searching. Two versions of minimalist self-regulatory skill instruction were compared to a control group that was merely taught procedural skills to operate the search engine. Acquired skills

  11. Browse Title Index

    African Journals Online (AJOL)

    Vol 9, No 1 (1999), Conception et réalisation d'un système d'aide à la décision pour la gestion des ressources naturelles, Abstract ... Vol 11, No 1 (2001), Contrat de Lecture et Revue Electronique : Quel paradigme éditorial, Abstract ... Vol 12, No 2 (2002), Le Document Web, Lisibilité, Structure et Oculométrie, Abstract.

  12. Scholarly Communication in Africa Program | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Impact beyond citation : an introduction to altmetrics; an overview of new altmetrics tools. Téléchargez le PDF ... aux services pour tous. Le nouveau site Web et la nouvelle bibliothèque de ressources aideront à améliorer les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en développement.

  13. Évaluation organisationnelle | CRDI - Centre de recherches pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    28 oct. 2011 ... Charles Lusthaus, Gary Anderson, Marie-Hélène Adrien et Elaine Murphy (CRDI 1995). Autres outils et ressources. Le site Web Reflect & Learn a vu le jour grâce à Universalia, au Center for Educational Leadership de l'Université McGill et au CRDI. Il a pour but d'améliorer l'évaluation organisationnelle ...

  14. Omicseq: a web-based search engine for exploring omics datasets

    Science.gov (United States)

    Sun, Xiaobo; Pittard, William S.; Xu, Tianlei; Chen, Li; Zwick, Michael E.; Jiang, Xiaoqian; Wang, Fusheng

    2017-01-01

    Abstract The development and application of high-throughput genomics technologies has resulted in massive quantities of diverse omics data that continue to accumulate rapidly. These rich datasets offer unprecedented and exciting opportunities to address long standing questions in biomedical research. However, our ability to explore and query the content of diverse omics data is very limited. Existing dataset search tools rely almost exclusively on the metadata. A text-based query for gene name(s) does not work well on datasets wherein the vast majority of their content is numeric. To overcome this barrier, we have developed Omicseq, a novel web-based platform that facilitates the easy interrogation of omics datasets holistically to improve ‘findability’ of relevant data. The core component of Omicseq is trackRank, a novel algorithm for ranking omics datasets that fully uses the numerical content of the dataset to determine relevance to the query entity. The Omicseq system is supported by a scalable and elastic, NoSQL database that hosts a large collection of processed omics datasets. In the front end, a simple, web-based interface allows users to enter queries and instantly receive search results as a list of ranked datasets deemed to be the most relevant. Omicseq is freely available at http://www.omicseq.org. PMID:28402462

  15. A Web Search on Environmental Topics: What Is the Role of Ranking?

    Science.gov (United States)

    Filisetti, Barbara; Mascaretti, Silvia; Limina, Rosa Maria; Gelatti, Umberto

    2013-01-01

    Abstract Background: Although the Internet is easy to use, the mechanisms and logic behind a Web search are often unknown. Reliable information can be obtained, but it may not be visible as the Web site is not located in the first positions of search results. The possible risks of adverse health effects arising from environmental hazards are issues of increasing public interest, and therefore the information about these risks, particularly on topics for which there is no scientific evidence, is very crucial. The aim of this study was to investigate whether the presentation of information on some environmental health topics differed among various search engines, assuming that the most reliable information should come from institutional Web sites. Materials and Methods: Five search engines were used: Google, Yahoo!, Bing, Ask, and AOL. The following topics were searched in combination with the word “health”: “nuclear energy,” “electromagnetic waves,” “air pollution,” “waste,” and “radon.” For each topic three key words were used. The first 30 search results for each query were considered. The ranking variability among the search engines and the type of search results were analyzed for each topic and for each key word. The ranking of institutional Web sites was given particular consideration. Results: Variable results were obtained when surfing the Internet on different environmental health topics. Multivariate logistic regression analysis showed that, when searching for radon and air pollution topics, it is more likely to find institutional Web sites in the first 10 positions compared with nuclear power (odds ratio=3.4, 95% confidence interval 2.1–5.4 and odds ratio=2.9, 95% confidence interval 1.8–4.7, respectively) and also when using Google compared with Bing (odds ratio=3.1, 95% confidence interval 1.9–5.1). Conclusions: The increasing use of online information could play an important role in forming opinions. Web users should become

  16. WAsP engineering 2000

    DEFF Research Database (Denmark)

    Mann, J.; Ott, Søren; Jørgensen, B.H.

    2002-01-01

    This report summarizes the findings of the EFP project WAsP Engineering Version 2000. The main product of this project is the computer program WAsP Engineering which is used for the estimation of extreme wind speeds, wind shears, profiles, and turbulencein complex terrain. At the web page http......://www.waspengineering.dk more information of the program can be obtained and a copy of the manual can be downloaded. The reports contains a complete description of the turbulence modelling in moderately complexterrain, implemented in WAsP Engineering. Also experimental validation of the model together with comparison...... with spectra from engineering codes is done. Some shortcomings of the linear flow model LINCOM, which is at the core of WAsP Engineering, ispointed out and modifications to eliminate the problem are presented. The global database of meteorological "reanalysis" data from NCAP/NCEP are used to estimate...

  17. Grooker, KartOO, Addict-o-Matic and More: Really Different Search Engines

    Science.gov (United States)

    Descy, Don E.

    2009-01-01

    There are hundreds of unique search engines in the United States and thousands of unique search engines around the world. If people get into search engines designed just to search particular web sites, the number is in the hundreds of thousands. This article looks at: (1) clustering search engines, such as KartOO (www.kartoo.com) and Grokker…

  18. Facilitation by ecosystem engineers enhances nutrient effects in an intertidal system

    NARCIS (Netherlands)

    Eriksson, Britas Klemens; Westra, Jocelle; van Gerwen, Imke; Weerman, Ellen; van der Zee, Els; van der Heide, Tjisse; van de Koppel, Johan; Olff, Han; Piersma, Theunis; Donadi, Serena

    2017-01-01

    Ecosystem engineering research has recently demonstrated the fundamental importance of non-trophic interactions for food-web structure. Particularly, by creating benign conditions in stressful environments, ecosystem engineers create hot beds of elevated levels of recruitment, growth, and survival

  19. AdaFF: Adaptive Failure-Handling Framework for Composite Web Services

    Science.gov (United States)

    Kim, Yuna; Lee, Wan Yeon; Kim, Kyong Hoon; Kim, Jong

    In this paper, we propose a novel Web service composition framework which dynamically accommodates various failure recovery requirements. In the proposed framework called Adaptive Failure-handling Framework (AdaFF), failure-handling submodules are prepared during the design of a composite service, and some of them are systematically selected and automatically combined with the composite Web service at service instantiation in accordance with the requirement of individual users. In contrast, existing frameworks cannot adapt the failure-handling behaviors to user's requirements. AdaFF rapidly delivers a composite service supporting the requirement-matched failure handling without manual development, and contributes to a flexible composite Web service design in that service architects never care about failure handling or variable requirements of users. For proof of concept, we implement a prototype system of the AdaFF, which automatically generates a composite service instance with Web Services Business Process Execution Language (WS-BPEL) according to the users' requirement specified in XML format and executes the generated instance on the ActiveBPEL engine.

  20. Analysis and Testing of Ajax-based Single-page Web Applications

    NARCIS (Netherlands)

    Mesbah, A.

    2009-01-01

    This dissertation has focused on better understanding the shifting web paradigm and the consequences of moving from the classical multi-page model to an Ajax-based single-page style. Specifically to that end, this work has examined this new class of software from three main software engineering