WorldWideScience

Sample records for based dynamic web

  1. Indexer Based Dynamic Web Services Discovery

    CERN Document Server

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

    2010-01-01

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

  2. Research of Web Documents Clustering Based on Dynamic Concept

    Institute of Scientific and Technical Information of China (English)

    WANG Yun-hua; CHEN Shi-hong

    2004-01-01

    Conceptual clustering is mainly used for solving the deficiency and incompleteness of domain knowledge.Based on conceptual clustering technology and aiming at the institutional framework and characteristic of Web theme information, this paper proposes and implements dynamic conceptual clustering algorithm and merging algorithm for Web documents, and also analyses the super performance of the clustering algorithm in efficiency and clustering accuracy.

  3. QoS Based Dynamic Web Services Composition & Execution

    CERN Document Server

    Khan, Farhan Hassan; Javed, M Younus; Khan, Aihab; Khiyal, Malik Sikandar Hayat

    2010-01-01

    The use of web services has dominated software industry. Existing technologies of web services are extended to give value added customized services to customers through composition. Automated web service composition is a very challenging task. This paper proposed the solution of existing problems and proposed a technique by combination of interface based and functionality based rules. The proposed framework also solves the issues related to unavailability of updated information and inaccessibility of web services from repository/databases due to any fault/failure. It provides updated information problem by adding aging factor in repository/WSDB (Web Services Database) and inaccessibility is solved by replication of WSDB. We discussed data distribution techniques and proposed our framework by using one of these strategies by considering quality of service issues. Finally, our algorithm eliminates the dynamic service composition and execution issues, supports web service composition considering QoS (Quality of ...

  4. Web-based dynamic Delphi: a new survey instrument

    Science.gov (United States)

    Yao, JingTao; Liu, Wei-Ning

    2006-04-01

    We present a mathematical model for a dynamic Delphi survey method which takes advantages of Web technology. A comparative study on the performance of the conventional Delphi method and the dynamic Delphi instrument is conducted. It is suggested that a dynamic Delphi survey may form a consensus quickly. However, the result may not be robust due to the judgement leaking issues.

  5. Dynamic web service composition based on OWL-S

    Institute of Scientific and Technical Information of China (English)

    Jing DONG; Yongtao SUN; Sheng YANG; Kang ZHANG

    2006-01-01

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

  6. Crawling Ajax-based Web Applications through Dynamic Analysis of User Interface State Changes

    OpenAIRE

    Mesbah, A.; Van Deursen, A.; Lenselink, S.

    2011-01-01

    Using JavaScript and dynamic DOM manipulation on the client-side of web applications is becoming a widespread approach for achieving rich interactivity and responsiveness in modern web applications. At the same time, such techniques, collectively known as Ajax, shatter the metaphor of web ‘pages’ with unique URLs, on which traditional web crawlers are based. This paper describes a novel technique for crawling Ajax-based applications through automatic dynamic analysis of user interface state c...

  7. Crawling Ajax-based Web Applications through Dynamic Analysis of User Interface State Changes

    NARCIS (Netherlands)

    Mesbah, A.; Van Deursen, A.; Lenselink, S.

    2011-01-01

    Using JavaScript and dynamic DOM manipulation on the client-side of web applications is becoming a widespread approach for achieving rich interactivity and responsiveness in modern web applications. At the same time, such techniques, collectively known as Ajax, shatter the metaphor of web ‘pages’ wi

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

    Directory of Open Access Journals (Sweden)

    P.S. Ashok Kumar

    2014-08-01

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

  9. THE DYNAMIC NONCE BASED AUTHENTICATION SCHEME TO DEFEND INTERMEDIARY ATTACK FOR WEB SERVICES

    Directory of Open Access Journals (Sweden)

    Elangovan Uma

    2013-01-01

    Full Text Available Nowadays, Web services have used drastically for various online applications like banking, e-bill processing. All online services need robust security architecture for handling sensitive data like user name, password. But, The Web service has security problems that need to be solved. The existing security scheme lacks to defend the attacks from replay and password guessing attacks. In this study we proposed a new scheme for a secure authentication procedure for the web service to enhance the security of the existing schemes. The proposed system has been implemented with the Dynamic Nonce for validating the user with username and password which is embedded with WS-Security. The Dynamic Nonce has been implemented with the user’s mouse movement by satisfying the condition given in the proposed scheme. It has changed for every session because it is generated from user’s mouse movements. The system has analyzed with possible attacks. The proposed dynamic nonce based authentication scheme is suitable for lower.

  10. Web-based experiments for the study of collective social dynamics in cultural markets.

    Science.gov (United States)

    Salganik, Matthew J; Watts, Duncan J

    2009-07-01

    Social scientists are often interested in understanding how the dynamics of social systems are driven by the behavior of individuals that make up those systems. However, this process is hindered by the difficulty of experimentally studying how individual behavioral tendencies lead to collective social dynamics in large groups of people interacting over time. In this study, we investigate the role of social influence, a process well studied at the individual level, on the puzzling nature of success for cultural products such as books, movies, and music. Using a "multiple-worlds" experimental design, we are able to isolate the causal effect of an individual-level mechanism on collective social outcomes. We employ this design in a Web-based experiment in which 2,930 participants listened to, rated, and downloaded 48 songs by up-and-coming bands. Surprisingly, despite relatively large differences in the demographics, behavior, and preferences of participants, the experimental results at both the individual and collective levels were similar to those found in Salganik, Dodds, and Watts (2006). Further, by comparing results from two distinct pools of participants, we are able to gain new insights into the role of individual behavior on collective outcomes. We conclude with a discussion of the strengths and weaknesses of Web-based experiments to address questions of collective social dynamics. PMID:25164996

  11. Web Cache Prefetching as an Aspect: Towards a Dynamic-Weaving Based Solution

    DEFF Research Database (Denmark)

    Segura-Devillechaise, Marc; Menaud, Jean-Marc; Muller, Gilles;

    2003-01-01

    Given the high proportion of HTTP traffic in the Internet, Web caches are crucial to reduce user access time, network latency, and bandwidth consumption. Prefetching in a Web cache can further enhance these benefits. For the best performance, however, the prefetching policy must match user and Web...... application characteristics. Thus, new prefetching policies must be loaded dynamically as needs change.Most Web caches are large C programs, and thus adding one or more prefetching policies to an existing Web cache is a daunting task. The main problem is that prefetching concerns crosscut the cache structure...... these issues. In particular, µ-Dyner provides a low overhead for aspect invocation, that meets the performance needs of Web caches....

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

    Directory of Open Access Journals (Sweden)

    Sytze de Bruin

    2009-03-01

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

  13. Web-Based Dynamic Assessment: Taking Assessment as Teaching and Learning Strategy for Improving Students e-Learning Effectiveness

    Science.gov (United States)

    Wang, Tzu-Hua

    2010-01-01

    This research combines the idea of cake format dynamic assessment defined by Sternberg and Grigorenko (2001) and the "graduated prompt approach" proposed by (Campione and Brown, 1985) and (Campione and Brown, 1987) to develop a multiple-choice Web-based dynamic assessment system. This research adopts a quasi-experimental design to investigate the…

  14. A Dynamic Web Page Prediction Model Based on Access Patterns to Offer Better User Latency

    CERN Document Server

    Mukhopadhyay, Debajyoti; Saha, Dwaipayan; Kim, Young-Chon

    2011-01-01

    The growth of the World Wide Web has emphasized the need for improvement in user latency. One of the techniques that are used for improving user latency is Caching and another is Web Prefetching. Approaches that bank solely on caching offer limited performance improvement because it is difficult for caching to handle the large number of increasingly diverse files. Studies have been conducted on prefetching models based on decision trees, Markov chains, and path analysis. However, the increased uses of dynamic pages, frequent changes in site structure and user access patterns have limited the efficacy of these static techniques. In this paper, we have proposed a methodology to cluster related pages into different categories based on the access patterns. Additionally we use page ranking to build up our prediction model at the initial stages when users haven't already started sending requests. This way we have tried to overcome the problems of maintaining huge databases which is needed in case of log based techn...

  15. An Agent Based Architecture (Using Planning) for Dynamic and Semantic Web Services Composition in an EBXML Context

    CERN Document Server

    Ouassila, Hioual; 10.5121/ijdms

    2011-01-01

    The process-based semantic composition of Web Services is gaining a considerable momentum as an approach for the effective integration of distributed, heterogeneous, and autonomous applications. To compose Web Services semantically, we need an ontology. There are several ways of inserting semantics in Web Services. One of them consists of using description languages like OWL-S. In this paper, we introduce our work which consists in the proposition of a new model and the use of semantic matching technology for semantic and dynamic composition of ebXML business processes.

  16. Design and Implementation of File Access and Control System Based on Dynamic Web

    Institute of Scientific and Technical Information of China (English)

    GAO Fuxiang; YAO Lan; BAO Shengfei; YU Ge

    2006-01-01

    A dynamic Web application, which can help the departments of enterprise to collaborate with each other conveniently, is proposed. Several popular design solutions are introduced at first. Then, dynamic Web system is chosen for developing the file access and control system. Finally, the paper gives the detailed process of the design and implementation of the system, which includes some key problems such as solutions of document management and system security. Additionally, the limitations of the system as well as the suggestions of further improvement are also explained.

  17. A web-based framework for urban data sharing and dynamic integration

    OpenAIRE

    Wang, Hongxia; Hamilton, Andy; Counsell, John; Tah, Joseph

    2007-01-01

    In urban planning and management, data sharing and integration are always problematic because urban datasets are heterogeneous and scattered in different domains and organisations. This paper introduces the research work being carried within the Virtual Environment Planning (VEPS) project. Based on a loosely-coupled mediator system and Open Geospatial Consortium’s Web Services (OWS) architecture, a Web-based information service framework is designed to support the sharing and integration of g...

  18. Visinets: a web-based pathway modeling and dynamic visualization tool.

    Science.gov (United States)

    Spychala, Jozef; Spychala, Pawel; Gomez, Shawn; Weinreb, Gabriel E

    2015-01-01

    In this report we describe a novel graphically oriented method for pathway modeling and a software package that allows for both modeling and visualization of biological networks in a user-friendly format. The Visinets mathematical approach is based on causal mapping (CMAP) that has been fully integrated with graphical interface. Such integration allows for fully graphical and interactive process of modeling, from building the network to simulation of the finished model. To test the performance of Visinets software we have applied it to: a) create executable EGFR-MAPK pathway model using an intuitive graphical way of modeling based on biological data, and b) translate existing ordinary differential equation (ODE) based insulin signaling model into CMAP formalism and compare the results. Our testing fully confirmed the potential of the CMAP method for broad application for pathway modeling and visualization and, additionally, showed significant advantage in computational efficiency. Furthermore, we showed that Visinets web-based graphical platform, along with standardized method of pathway analysis, may offer a novel and attractive alternative for dynamic simulation in real time for broader use in biomedical research. Since Visinets uses graphical elements with mathematical formulas hidden from the users, we believe that this tool may be particularly suited for those who are new to pathway modeling and without the in-depth modeling skills often required when using other software packages. PMID:26020230

  19. A Web Portal-Based Time-Aware KML Animation Tool for Exploring Spatiotemporal Dynamics of Hydrological Events

    Science.gov (United States)

    Bao, X.; Cai, X.; Liu, Y.

    2009-12-01

    Understanding spatiotemporal dynamics of hydrological events such as storms and droughts is highly valuable for decision making on disaster mitigation and recovery. Virtual Globe-based technologies such as Google Earth and Open Geospatial Consortium KML standards show great promises for collaborative exploration of such events using visual analytical approaches. However, currently there are two barriers for wider usage of such approaches. First, there lacks an easy way to use open source tools to convert legacy or existing data formats such as shapefiles, geotiff, or web services-based data sources to KML and to produce time-aware KML files. Second, an integrated web portal-based time-aware animation tool is currently not available. Thus users usually share their files in the portal but have no means to visually explore them without leaving the portal environment which the users are familiar with. We develop a web portal-based time-aware KML animation tool for viewing extreme hydrologic events. The tool is based on Google Earth JavaScript API and Java Portlet standard 2.0 JSR-286, and it is currently deployable in one of the most popular open source portal frameworks, namely Liferay. We have also developed an open source toolkit kml-soc-ncsa (http://code.google.com/p/kml-soc-ncsa/) to facilitate the conversion of multiple formats into KML and the creation of time-aware KML files. We illustrate our tool using some example cases, in which drought and storm events with both time and space dimension can be explored in this web-based KML animation portlet. The tool provides an easy-to-use web browser-based portal environment for multiple users to collaboratively share and explore their time-aware KML files as well as improving the understanding of the spatiotemporal dynamics of the hydrological events.

  20. A Dynamical Classification of the Cosmic Web

    OpenAIRE

    Forero-Romero, J. E.; Hoffman, Y.; S. Gottloeber(AIP, Potsdam, Germany); Klypin, A.; Yepes, G.

    2008-01-01

    A dynamical classification of the cosmic web is proposed. The large scale environment is classified into four web types: voids, sheets, filaments and knots. The classification is based on the evaluation of the deformation tensor, i.e. the Hessian of the gravitational potential, on a grid. The classification is based on counting the number of eigenvalues above a certain threshold, lambda_th at each grid point, where the case of zero, one, two or three such eigenvalues corresponds to void, shee...

  1. Dynamic User Interface Based on Cognitive Approach in Web Based Learning

    Directory of Open Access Journals (Sweden)

    L Jayasimman

    2011-07-01

    Full Text Available With bandwidth increasing at a constant pace, technology in education has become an important part for delivery of educational content to students. Online learning in various forms is gaining popularity but lacks the adaptability required to hold the learners attention due to its rigid structure. Though animation and powerful graphics enhance the learning content, delivery of content according to learners need is yet to become a reality. It is not possible to build a learning system that can satisfy every learner as some people respond best when they see basic facts on a clean page, others when they have a lot of charts and graphs at their fingertips. To overcome these shortcomings the content delivery itself can be made dynamic based on the learnerand#039;s need. In this paper we propose a novel method to identify a userand#039;s need based on the cognitive behavior of the user. Based on the response of the user, an decision tree induction algorithm is used to predict the requirements of future users.

  2. An Efficient Cluster Based Web Object Filters From Web Pre-Fetching And Web Caching On Web User Navigation

    Directory of Open Access Journals (Sweden)

    A. K. Santra

    2012-05-01

    Full Text Available The World Wide Web is a distributed internet system, which provides dynamic and interactive services includes on line tutoring, video/audio conferencing, e-commerce, and etc., which generated heavy demand on network resources and web servers. It increase over the past few year at a very rapidly rate, due to which the amount of traffic over the internet is increasing. As a result, the network performance has now become very slow. Web Pre-fetching and Caching is one of the effective solutions to reduce the web access latency and improve the quality of service. The existing model presented a Cluster based pre-fetching scheme identified clusters of correlated Web pages based on users access patterns. Web Pre-fetching and Caching cause significant improvements on the performance of Web infrastructure. In this paper, we present an efficient Cluster based Web Object Filters from Web Pre-fetching and Web caching scheme to evaluate the web user navigation patterns and user references of product search. Clustering of web page objects obtained from pre-fetched and web cached contents. User Navigation is evaluated from the web cluster objects with similarity retrieval in subsequent user sessions. Web Object Filters are built with the interpretation of the cluster web pages related to the unique users by discarding redundant pages. Ranking is done on users web page product preferences at multiple sessions of each individual user. The performance is measured in terms of Objective function, Number of clusters and cluster accuracy.

  3. Web-based information systems development and dynamic organisational change: the need for emergent development tools

    OpenAIRE

    Ramrattan, M; Patel, NV

    2009-01-01

    This paper considers contextual issues relating to the problem of developing web-based information systems in and for emergent organisations. It postulates that the methods available suffer because of sudden and unexpected changing characteristics within the organisation. The Theory of Deferred Action is used as the basis for the development of an emergent development tool. Many tools for managing change in a continuously changing organisation are susceptible to inadequacy. The in...

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

    OpenAIRE

    Maya Rathore; Ugrasen Suman

    2011-01-01

    Problem statement: With fast spreading of web services technology over the Internet, the quality aspects of a web service has received significant attention to the practitioners. The quality of web service includes both functional and nonfunctional details. In order to provide the correct and meaningful information to web service consumer, sometimes there is a need to compose existing web services in order to create new web service. Approach: We have proposed a Quality of ...

  5. Web business confidence collaborative computing based on dynamic demand service feedback%基于动态需求服务反馈的 Web 业务可信度协同计算

    Institute of Scientific and Technical Information of China (English)

    吴彬; 李俊娥

    2015-01-01

    For Web service and Web business selection problem,this paper proposed a based on the dynamic needs of Web business credibility feedback collaborative computing algorithms.Dynamic analysis of the problem of Web service selection and combination of the user’s choice using a service-based model of user satisfaction feedback information to address Web serv-ices,Web business in order to prevent poor quality of services to choose the type of service.In selecting business on the Web using a calculation method based on credibility,the credibility of the size of feedback capability,trust serviced in three areas determined by the business reputation,to choose the best Web credibility by comparing the size of the business.Simulation re-sults show that the algorithm has a higher accuracy in selecting the best Web services and Web business,especially in contrast to the precise rate compared choose the best algorithm for Web service higher than 1 1 %.%针对 Web 服务和 Web 业务的选择问题,提出一种基于动态需求服务反馈的 Web 业务可信度协同计算算法,动态分析了用户的 Web 服务选择和组合问题,采用了基于用户满意度信息的服务反馈模型来解决 Web 服务的选择问题,从而防止 Web 业务选择到服务质量较差的服务类型。在 Web 业务的选择上采用了基于可信度计算的方法,可信度大小由业务信誉度、反馈能力、服务信任度三方面决定,通过可信度大小的比较来选择最佳的 Web 业务。实验仿真结果表明,该算法在选择最佳的 Web 服务和 Web 业务上具有较高的精确度,尤其在选择最佳 Web 服务的精确率上相比对比算法高出11%以上。

  6. Extinction Dynamics and Evolution of a Survivability-Based Multi-Level Food-Web Model

    Science.gov (United States)

    Berger, B. W.; Boulter, C. J.

    A multi-level evolution model where forced extinctions occur throughout the system based on a species fitness value (or survivability) is developed that is essentially the fusion of the evolution model of Bak and Sneppen and the food-web model of Amaral and Meyer. This model is found to describe the fossil record and behave as a self-organized critical system with a power law exponent of approximately 2, but is also found to be remarkably similar to a model that causes the forced extinctions randomly throughout the system. To explain this result we show that fitness is nearly randomly distributed with a slight peak in forced extinction (due to fitness) in the middle levels. These findings lend strong support to the hypothesis that coextinction effects (propagated through a food-web) provide a robust explanation of the fossil record, independent of the mechanism for species competition.

  7. Using web-based training to enhance perceptual-cognitive skills in complex dynamic offside events.

    Science.gov (United States)

    Put, Koen; Wagemans, Johan; Spitz, Jochim; Williams, A Mark; Helsen, Werner F

    2016-01-01

    In association football, the difficulty in making offside decisions depends on both perceptual and cognitive processes. Therefore, the objectives of the present study were to enhance the decision-making skills of assistant referees by further developing their ability to (1) time slice the incoming information flow into series of isolated time frames during an ongoing offside situation and (2) use this information to mentally read off the spatial positions of the key-role players. Training (n = 10) and control groups (n = 10) were exposed to a pre- and post-test, consisting of an offside decision-making and frame recognition test. In the latter, assistant referees were asked to indicate which of five photos best represented the spatial position of the defender and attacker at the moment of the pass. Only the training group received 12 web-based offside training sessions. First, the training group improved in mentally freezing, holding and scanning the mental picture of the offside situation in short-term memory from pre- to post-test, as evidenced by an increased recognition accuracy. Second, the improvement in recognition accuracy resulted in enhanced performance on the offside decision-making task. The benefits of web-based training are highlighted.

  8. Study on dynamic services composition of web services based on BPEL

    Science.gov (United States)

    Gao, Jinyue; Huang, Fei; Zhang, Gongxuan

    2013-12-01

    From the core concepts of SOA (Service-Oriented Architecture) ——"Service" starting the service composition is discussed in detail, from the service relationships network modeling, services dynamic composition approach based on Business Process Execution Language BPEL (Business Process Execution Language) is proposed in this paper, meanwhile two concepts of service agent and service quality are described, which achieve the service process dynamic execution.

  9. Ontology-based Integration of Web Navigation for Dynamic User Profiling

    Directory of Open Access Journals (Sweden)

    Anett HOPPE

    2015-01-01

    Full Text Available The development of technology for handling information on a Big Data-scale is a buzzing topic of current research. Indeed, improved techniques for knowledge discovery are crucial for scientific and economic exploitation of large-scale raw data. In research collaboration with an industrial actor, we explore the applicability of ontology-based knowledge extraction and representation for today's biggest source of large-scale data, the Web. The goal is to develop a profil-ing application, based on the implicit information that every user leaves while navigating the online, with the goal to identify and model preferences and interests in a detailed user profile. This includes the identification of current tendencies as well as the prediction of possible future interests, as far as they are deducible from the collected browsing information, and integrated expert domain knowledge. The article at hand gives an overview on the current state of the research, the developments made and insights gained.

  10. Dynamic replication of Web contents

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The phenomenal growth of the World Wide Web has brought huge increase in the traffic to the popular web sites.Long delays and denial of service experienced by the end-users,especially during the peak hours,continues to be the common problem while accessing popular sites.Replicating some of the objects at multiple sites in a distributed web-server environment is one of the possible solutions to improve the response time/Iatency. The decision of what and where to replicate requires solving a constraint optimization problem,which is NP-complete in general.In this paper, we consider the problem of placing copies of objects in a distributed web server system to minimize the cost of serving read and write requests when the web servers have Iimited storage capacity.We formulate the problem as a 0-1 optimization problem and present a polynomial time greedy algorithm with backtracking to dynamically replicate objects at the appropriate sites to minimize a cost function.To reduce the solution search space,we present necessary condi tions for a site to have a replica of an object jn order to minimize the cost function We present simulation resuIts for a variety of problems to illustrate the accuracy and efficiency of the proposed algorithms and compare them with those of some well-known algorithms.The simulation resuIts demonstrate the superiority of the proposed algorithms.

  11. Human dynamics revealed through Web analytics

    Science.gov (United States)

    Gonçalves, Bruno; Ramasco, José J.

    2008-08-01

    The increasing ubiquity of Internet access and the frequency with which people interact with it raise the possibility of using the Web to better observe, understand, and monitor several aspects of human social behavior. Web sites with large numbers of frequently returning users are ideal for this task. If these sites belong to companies or universities, their usage patterns can furnish information about the working habits of entire populations. In this work, we analyze the properly anonymized logs detailing the access history to Emory University’s Web site. Emory is a medium-sized university located in Atlanta, Georgia. We find interesting structure in the activity patterns of the domain and study in a systematic way the main forces behind the dynamics of the traffic. In particular, we find that linear preferential linking, priority-based queuing, and the decay of interest for the contents of the pages are the essential ingredients to understand the way users navigate the Web.

  12. Dynamic taxonomies applied to a web-based relational database for geo-hydrological risk mitigation

    Science.gov (United States)

    Sacco, G. M.; Nigrelli, G.; Bosio, A.; Chiarle, M.; Luino, F.

    2012-02-01

    In its 40 years of activity, the Research Institute for Geo-hydrological Protection of the Italian National Research Council has amassed a vast and varied collection of historical documentation on landslides, muddy-debris flows, and floods in northern Italy from 1600 to the present. Since 2008, the archive resources have been maintained through a relational database management system. The database is used for routine study and research purposes as well as for providing support during geo-hydrological emergencies, when data need to be quickly and accurately retrieved. Retrieval speed and accuracy are the main objectives of an implementation based on a dynamic taxonomies model. Dynamic taxonomies are a general knowledge management model for configuring complex, heterogeneous information bases that support exploratory searching. At each stage of the process, the user can explore or browse the database in a guided yet unconstrained way by selecting the alternatives suggested for further refining the search. Dynamic taxonomies have been successfully applied to such diverse and apparently unrelated domains as e-commerce and medical diagnosis. Here, we describe the application of dynamic taxonomies to our database and compare it to traditional relational database query methods. The dynamic taxonomy interface, essentially a point-and-click interface, is considerably faster and less error-prone than traditional form-based query interfaces that require the user to remember and type in the "right" search keywords. Finally, dynamic taxonomy users have confirmed that one of the principal benefits of this approach is the confidence of having considered all the relevant information. Dynamic taxonomies and relational databases work in synergy to provide fast and precise searching: one of the most important factors in timely response to emergencies.

  13. A Type System for Dynamic Web Documents

    DEFF Research Database (Denmark)

    Schwartzbach, Michael Ignatieff; Sandholm, Anders

    2000-01-01

    Many interactive Web services use the CGI interface for communication with clients. They will dynamically create HTML documents that are presented to the client who then resumes the interaction by submitting data through incorporated form fields. This protocol is difficult to statically type-chec...... system is based on a flow analysis of which we prove soundness. We present an efficient runtime implementation that respects the semantics of only well-typed programs. This work is fully implemented as part of the system for defining interactive Web services.......Many interactive Web services use the CGI interface for communication with clients. They will dynamically create HTML documents that are presented to the client who then resumes the interaction by submitting data through incorporated form fields. This protocol is difficult to statically type...

  14. Dynamic Mental Representations of Habitual Behaviours: Food Choice on a Web-Based Environment

    Directory of Open Access Journals (Sweden)

    Rui Gaspar

    2016-08-01

    Full Text Available AimRather than being rigid, habitual behaviours may be determined by dynamic mental representations that can adapt to context changes. This adaptive potential may result from particular conditions dependent on the interaction between two sources of mental constructs activation: perceived context applicability and cognitive accessibility.MethodTwo web-shopping simulations offering the choice between habitually chosen and non-habitually chosen food products were presented to participants. This considered two choice contexts differing in the habitual behaviour perceived applicability (low vs. high and a measure of habitual behaviour chronicity.ResultsStudy 1 demonstrated a perceived applicability effect, with more habitual (non-organic than non-habitual (organic food products chosen in a high perceived applicability (familiar than in a low perceived applicability (new context. The adaptive potential of habitual behaviour was evident in the habitual products choice consistency across three successive choices, despite the decrease in perceived applicability. Study 2 evidenced the adaptive potential in strong habitual behaviour participants – high chronic accessibility – who chose a habitual product (milk more than a non-habitual product (orange juice, even when perceived applicability was reduced (new context.ConclusionResults portray consumers as adaptive decision makers that can flexibly cope with changes in their (inner and outer choice contexts.

  15. Quality of Web-based information systems

    Directory of Open Access Journals (Sweden)

    Kazimierz Worwa

    2010-12-01

    Full Text Available The scope and complexity of current World Wide Web applications vary widely: from smallscale, short-lived services to large-scale enterprise applications distributed across the Internet and corporate intranets and extranets. As Web applications have evolved, the demands placed on Web-based systems and the complexity of designing, developing, maintaining, and managing these systems have also increased significantly. They provided vast, dynamic information in multiple media formats (graphics, images, and video. Web site design for these and many other applications demand balance among information content, aesthetics, and performance. In accordance with the growth of the Internet and World Wide Web, there has been some research on quality issues of Web-based software systems. The differences between the Web-based information systems and conventional information systems are discussed in a paper from the perspective of software quality

  16. Web-based support systems

    CERN Document Server

    Yao, JingTao

    2010-01-01

    The emerging interdisciplinary study of Web-based support systems focuses on the theories, technologies and tools for the design and implementation of Web-based systems that support various human activities. This book presents the state-of-the-art in Web-based support systems (WSS). The research on WSS is multidisciplinary and focuses on supporting various human activities in different domains/fields based on computer science, information technology, and Web technology. The main goal is to take the opportunities of the Web, to meet the challenges of the Web, to extend the human physical limita

  17. SVG-Based Web Publishing

    Science.gov (United States)

    Gao, Jerry Z.; Zhu, Eugene; Shim, Simon

    2003-01-01

    With the increasing applications of the Web in e-commerce, advertising, and publication, new technologies are needed to improve Web graphics technology due to the current limitation of technology. The SVG (Scalable Vector Graphics) technology is a new revolutionary solution to overcome the existing problems in the current web technology. It provides precise and high-resolution web graphics using plain text format commands. It sets a new standard for web graphic format to allow us to present complicated graphics with rich test fonts and colors, high printing quality, and dynamic layout capabilities. This paper provides a tutorial overview about SVG technology and its essential features, capability, and advantages. The reports a comparison studies between SVG and other web graphics technologies.

  18. Automatic invariant detection in dynamic web applications

    NARCIS (Netherlands)

    Groeneveld, F.; Mesbah, A.; Van Deursen, A.

    2010-01-01

    The complexity of modern web applications increases as client-side JavaScript and dynamic DOM programming are used to offer a more interactive web experience. In this paper, we focus on improving the dependability of such applications by automatically inferring invariants from the client-side and us

  19. Securing web-based exams

    NARCIS (Netherlands)

    Sessink, O.D.T.; Beeftink, H.H.; Tramper, J.; Hartog, R.J.M.

    2004-01-01

    Learning management systems may offer web-based exam facilities. Such facilities entail a higher risk to exams fraud than traditional paper-based exams. The article discusses security issues with web-based exams, and proposes precautionary measures to reduce the risks. A security model is presented

  20. Location-based Web Search

    Science.gov (United States)

    Ahlers, Dirk; Boll, Susanne

    In recent years, the relation of Web information to a physical location has gained much attention. However, Web content today often carries only an implicit relation to a location. In this chapter, we present a novel location-based search engine that automatically derives spatial context from unstructured Web resources and allows for location-based search: our focused crawler applies heuristics to crawl and analyze Web pages that have a high probability of carrying a spatial relation to a certain region or place; the location extractor identifies the actual location information from the pages; our indexer assigns a geo-context to the pages and makes them available for a later spatial Web search. We illustrate the usage of our spatial Web search for location-based applications that provide information not only right-in-time but also right-on-the-spot.

  1. Dynamic Educational e-Content Selection Using Multiple Criteria in Web-Based Personalized Learning Environments.

    Science.gov (United States)

    Manouselis, Nikos; Sampson, Demetrios

    This paper focuses on the way a multi-criteria decision making methodology is applied in the case of agent-based selection of offered learning objects. The problem of selection is modeled as a decision making one, with the decision variables being the learner model and the learning objects' educational description. In this way, selection of…

  2. Web based foundry knowledge base

    Directory of Open Access Journals (Sweden)

    A. Stawowy

    2009-01-01

    Full Text Available The main assumptions and functions of proposed Foundry Knowledge Base (FKB are presented in this paper. FKB is a framework forinformation exchange of casting products and manufacturing methods. We use CMS (Content Management System to develope andmaintain our web-based system. The CastML – XML dialect developed by authors for description of casting products and processes – isused as a tool for information interchange between ours and outside systems, while SQL is used to store and edit knowledge rules and alsoto solve the basic selection problems in the rule-based module. Besides the standard functions (companies data, news, events, forums and media kit, our website contains a number of nonstandard functions; the intelligent search module based on expert system is the main advantage of our solution. FKB is to be a social portal which content will be developed by foundry community.

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

    Institute of Scientific and Technical Information of China (English)

    JIA Wenjue; CHEN Yumin; GONG Jianya

    2004-01-01

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

  4. RESEARCH ON QUALITY OF SERVICE-BASED DYNAMIC WEB SERVICE COMPOSITION METHOD%基于服务质量的动态 Web 服务组合方法研究

    Institute of Scientific and Technical Information of China (English)

    吴青林; 周天宏

    2016-01-01

    针对 Web 服务组合中权重固定、选择不灵活、性能不佳等问题,通过改进遗传算法提出一种基于服务质量的变权动态Web 服务组合方法(VW-DWSC-QoS)。VW-DWSC-QoS 组合方法使用变权 QoS 参数,引入罚函数策略,并动态调整变权因子、交叉因子和变异因子,使其实现了在较短时间内找到符合用户需求的 Web 服务组合。理论分析和仿真实验表明该组合方法的可行性和有效性,与传统的方法相比,其最优解具有更好的服务质量和适应度。%For the problems in Web service composition such as the fixed weight,inflexible choice and poor performance,etc.,we put forward a quality of service-based variable weight dynamic Web service composition method (VW-DWSC-QoS)by the improved genetic algorithm.The VW-DWSC-QoS method uses the variable weight QoS parameters,introduces the penalty function strategy,and dynamic adjusts the variable weight factor,crossover and mutation factor,these makes it good in finding the Web service compositions meeting users need within a relatively short period.Theoretical analysis and simulation experiments all show the feasibility and effectiveness of this method, and compared with the traditional method,its optimal solution has better quality of service and fitness.

  5. Database-Based Web Page

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Database-based web page which uses IIS4.0 + ASP + ADO + SQL7.0 isbriefly introduced. It has been successfully used in E-commerce , bulletin board system and chat room, and so on in the web site of Computer Center Hudong Campus, Tong ji University.

  6. Design of Dynamic Web Server Based on ulP and AJAX%基于uIP与AJAX的动态Web服务器设计

    Institute of Scientific and Technical Information of China (English)

    杜宝祯; 吴志荣; 曾佳

    2012-01-01

    针对远程信息监测系统中数据的实时采集更新问题,将AJAX和CGI应用到嵌入式Web服务器的设计中,实现了服务器与浏览器之间的动态信息交互。本文首先分析了uIP协议栈,并在协议栈之上设计了Web服务器.然后利用CGI服务程序处理来自客户端的XML HttpRequest对象请求,实现动态Web功能。现场实验结果表明,嵌入式Web服务器降低了服务器端的资源开销,提高了响应速度。%Aiming at real-time data collection and update issues in remote information monitoring system, AJAX and CGI are applied to the design of embedded Web server,and dynamic information interaction is achieved between server and browser, uIP protocol stack is first analyzed, and the Web server is designed based on the protocol stack. Then XMLHttpRequest object requests from client are processed by CGI service programs, and the dynamic Web functionality is achieved. Field test results show that this embedded Web server reduces server resource costs and improves response speed.

  7. Research of Dynamic Binding Modeling TechnologyBased on WEB Workflow%基于WEB工作流的动态绑定建模技术研究

    Institute of Scientific and Technical Information of China (English)

    江进

    2014-01-01

    工作流技术是实现业务流程建模、仿真、优化、集成的有效手段之一。尤其是基于WEB的工作流动态建模技术,是增强信息系统业务流程互联互通、实现业务流程动态可配置、流程优化重组的有力措施。文章首先分析了工作流控制模型,然后构建了基于WEB的多流程工作流协同控制体系。采用基于XML的技术方案给出了流程初始化定义的配置框架,通过工作流引擎调用WEB服务描述语言WSDL,实现了面向web服务的多流程动态绑定。达到了实际业务流程逻辑与流程组织逻辑分离的目的。%Workflow technology is one of the business process modeling, simulation, optimization, integrated and effective means of achieving. Especially the dynamic workflow modeling technology based on WEB, is to enhance the information system business process interoperability, realize the effective measures of dynamic configurable business process, process reengineering. Thesis analyzes the workflow control model, and then build a WEB-based multi-process workflows cooperative control system. XML-based technology solutions gives the configuration framework defined initialization process, call the WEB Services Description Language WSDL through the workflow engine to achieve a dynamic and multi-process-oriented web service bindings. Achieve the purpose of the actual business process logic and process organization logical separation.

  8. Web-based control application using WebSocket

    International Nuclear Information System (INIS)

    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)

  9. Dynamic Web Service Composition within a Service-Oriented Architecture

    OpenAIRE

    Jureta, Ivan; Faulkner, Stéphane; Achbany, Youssef; Saerens, Marco

    2007-01-01

    Increasing automation requires open, distributed, service-oriented systems capable of multicriteria-driven, dynamic adaptation for appropriate response to changing operating conditions. We combine a simple architecture with a novel algorithm to enable openness, distribution, and multi-criteria-driven service composition at runtime. The service-oriented architecture involves mediator web services coordinating other web services into compositions necessary to fulfil user requests. By basing med...

  10. Evaluation Method of Web Site Based on Web Structure Mining

    Institute of Scientific and Technical Information of China (English)

    LiJun-e; ZhouDong-ru

    2003-01-01

    The structure of Web site became more complex than before. During the design period of a Web site, the lack of model and method results in improper Web structure,which depend on the designer's experience. From the point of view of software engineering, every period in the software life must be evaluated before starting the next period's work. It is very important and essential to search relevant methods for evaluating Web structure before the site is completed. In this work, after studying the related work about the Web structure mining and analyzing the major structure mining methods (Page-rank and Hub/Authority), a method based on the Page-rank for Web structure evaluation in design stage is proposed. A Web structure modeling language WSML is designed, and the implement strategies for evaluating system of the Web site structure are given out. Web structure mining has being used mainly in search engines before. It is the first time to employ the Web structure mining technology to evaluate a Web structure in the design period of a Web site. It contributes to the formalization of the design documents for Web site and the improving of software engineering for large scale Web site, and the evaluating system is a practical tool for Web site construction.

  11. Dynamic Network of Concepts from Web-Publications

    CERN Document Server

    Lande, D V

    2008-01-01

    The network, the nodes of which are concepts (people's names, companies' names, etc.), extracted from web-publications, is considered. A working algorithm of extracting such concepts is presented. Edges of the network under consideration refer to the reference frequency which depends on the fact how many times the concepts, which correspond to the nodes, are mentioned in the same documents. Web-documents being published within a period of time together form an information flow, which defines the dynamics of the network studied. The phenomenon of its structure stability, when the number of web-publications, constituting its formation bases, increases, is discussed

  12. Conducting Web-Based Surveys

    OpenAIRE

    Solomon, David J.

    2001-01-01

    Web-based surveying is becoming widely used in social science and educational research. The Web offers significant advantages over more traditional survey techniques however there are still serious methodological challenges with using this approach. Currently coverage bias or the fact significant numbers of people do not have access, or choose not to use the Internet is of most concern to researchers. Survey researchers also have much to learn concerning the most effective ways to conduct s...

  13. HIDDEN WEB EXTRACTOR DYNAMIC WAY TO UNCOVER THE DEEP WEB

    OpenAIRE

    DR. ANURADHA; BABITA AHUJA

    2012-01-01

    In this era of digital tsunami of information on the web, everyone is completely dependent on the WWW for information retrieval. This has posed a challenging problem in extracting relevant data. Traditional web crawlers focus only on the surface web while the deep web keeps expanding behind the scene. The web databases are hidden behind the query interfaces. In this paper, we propose a Hidden Web Extractor (HWE) that can automatically discover and download data from the Hidden Web databases. ...

  14. An Agent-Based Focused Crawling Framework for Topic- and Genre-Related Web Document Discovery

    OpenAIRE

    Pappas, Nikolaos; Katsimpras, Georgios; Stamatatos, Efstathios

    2012-01-01

    The discovery of web documents about certain topics is an important task for web-based applications including web document retrieval, opinion mining and knowledge extraction. In this paper, we propose an agent-based focused crawling framework able to retrieve topic- and genre-related web documents. Starting from a simple topic query, a set of focused crawler agents explore in parallel topic-specific web paths using dynamic seed URLs that belong to certain web genres and are collected from web...

  15. Designing an architectural style for dynamic medical Cross-Organizational Workflow management system: an approach based on agents and web services.

    Science.gov (United States)

    Bouzguenda, Lotfi; Turki, Manel

    2014-04-01

    This paper shows how the combined use of agent and web services technologies can help to design an architectural style for dynamic medical Cross-Organizational Workflow (COW) management system. Medical COW aims at supporting the collaboration between several autonomous and possibly heterogeneous medical processes, distributed over different organizations (Hospitals, Clinic or laboratories). Dynamic medical COW refers to occasional cooperation between these health organizations, free of structural constraints, where the medical partners involved and their number are not pre-defined. More precisely, this paper proposes a new architecture style based on agents and web services technologies to deal with two key coordination issues of dynamic COW: medical partners finding and negotiation between them. It also proposes how the proposed architecture for dynamic medical COW management system can connect to a multi-agent system coupling the Clinical Decision Support System (CDSS) with Computerized Prescriber Order Entry (CPOE). The idea is to assist the health professionals such as doctors, nurses and pharmacists with decision making tasks, as determining diagnosis or patient data analysis without stopping their clinical processes in order to act in a coherent way and to give care to the patient.

  16. Simulating food web dynamics along a gradient: quantifying human influence.

    Science.gov (United States)

    Jordán, Ferenc; Gjata, Nerta; Mei, Shu; Yule, Catherine M

    2012-01-01

    Realistically parameterized and dynamically simulated food-webs are useful tool to explore the importance of the functional diversity of ecosystems, and in particular relations between the dynamics of species and the whole community. We present a stochastic dynamical food web simulation for the Kelian River (Borneo). The food web was constructed for six different locations, arrayed along a gradient of increasing human perturbation (mostly resulting from gold mining activities) along the river. Along the river, the relative importance of grazers, filterers and shredders decreases with increasing disturbance downstream, while predators become more dominant in governing eco-dynamics. Human activity led to increased turbidity and sedimentation which adversely impacts primary productivity. Since the main difference between the study sites was not the composition of the food webs (structure is quite similar) but the strengths of interactions and the abundance of the trophic groups, a dynamical simulation approach seemed to be useful to better explain human influence. In the pristine river (study site 1), when comparing a structural version of our model with the dynamical model we found that structurally central groups such as omnivores and carnivores were not the most important ones dynamically. Instead, primary consumers such as invertebrate grazers and shredders generated a greater dynamical response. Based on the dynamically most important groups, bottom-up control is replaced by the predominant top-down control regime as distance downstream and human disturbance increased. An important finding, potentially explaining the poor structure to dynamics relationship, is that indirect effects are at least as important as direct ones during the simulations. We suggest that our approach and this simulation framework could serve systems-based conservation efforts. Quantitative indicators on the relative importance of trophic groups and the mechanistic modeling of eco-dynamics

  17. Dynamic Interaction: A Measurement Development and Empirical Evaluation of Knowledge Based Systems and Web 2.0 Decision Support Mashups

    Science.gov (United States)

    Beemer, Brandon Alan

    2010-01-01

    The research presented in this dissertation focuses on the organizational and consumer need for knowledge based support in unstructured domains, by developing a measurement scale for dynamic interaction. Addressing this need is approached and evaluated from two different perspectives. The first approach is the development of Knowledge Based…

  18. Self-Healing in Dynamic Web Service Composition

    Directory of Open Access Journals (Sweden)

    S.Poonguzhali,

    2011-05-01

    Full Text Available Web service composition is defined as an orchestration of multiple web services into a single composite web service. Web service composition is done in three ways such as static web servicecomposition, dynamic web service composition, semi dynamic web service composition. The dynamic web service composition is done on the fly. When the user gives the request the dynamic composersearches for suitable web services and it is composed accordingly. When the services composed dynamically they need to execute in different environment. The dynamic web service composition leadsto several faults such as poor response, incorrect order, service incompatibility, unavailability etc. If the failure occurs the cause of the failure has to be detected and healed. The healing should be done automatically. Hence this paper focuses on self-healing mechanism for dynamic web service composition. Self healing is a property of autonomic computing which makes the system to heal itselffrom the faults. This paper focuses on QoS faults. We proposed a self-healing solution for dynamic web service composition faults. We proposed architecture for self-healing which heals the QoS faults indynamic web service composition. We have given procedure for our healing mechanism.

  19. Dynamic Tracking of Web Activity Accessed by Users Using Cookies

    Directory of Open Access Journals (Sweden)

    K.V.S. Jaharsh Samayan

    2015-07-01

    Full Text Available The motive of this study is to suggest a protocol which can be implemented to observe the activities of any node within a network whose contribution to the organization needs to be measured. Many associates working in any organization misuse the resources allocated to them and waste their working time in unproductive work which is of no use to the organization. In order to tackle this problem the dynamic approach in monitoring web pages accessed by user using cookies gives a very efficient way of tracking all the activities of the individual and store in cookies which are generated based on their recent web activity and display a statistical information of how the users web activity for the time period has been utilized for every IP-address in the network. In a ever challenging dynamic world monitoring the productivity of the associates in the organization plays an utmost important role.

  20. HIDDEN WEB EXTRACTOR DYNAMIC WAY TO UNCOVER THE DEEP WEB

    Directory of Open Access Journals (Sweden)

    DR. ANURADHA

    2012-06-01

    Full Text Available In this era of digital tsunami of information on the web, everyone is completely dependent on the WWW for information retrieval. This has posed a challenging problem in extracting relevant data. Traditional web crawlers focus only on the surface web while the deep web keeps expanding behind the scene. The web databases are hidden behind the query interfaces. In this paper, we propose a Hidden Web Extractor (HWE that can automatically discover and download data from the Hidden Web databases. Since the only “entry point” to a Hidden Web site is a query interface, the main challenge that a Hidden WebExtractor has to face is how to automatically generate meaningful queries for the unlimited number of website pages.

  1. Human dynamics revealed through Web analytics

    CERN Document Server

    Goncalves, Bruno

    2008-01-01

    When the World Wide Web was first conceived as a way to facilitate the sharing of scientific information at the CERN (European Center for Nuclear Research) few could have imagined the role it would come to play in the following decades. Since then, the increasing ubiquity of Internet access and the frequency with which people interact with it raise the possibility of using the Web to better observe, understand, and monitor several aspects of human social behavior. Web sites with large numbers of frequently returning users are ideal for this task. If these sites belong to companies or universities, their usage patterns can furnish information about the working habits of entire populations. In this work, we analyze the properly anonymized logs detailing the access history to Emory University's Web site. Emory is a medium size university located in Atlanta, Georgia. We find interesting structure in the activity patterns of the domain and study in a systematic way the main forces behind the dynamics of the traffi...

  2. Dynamic Science Data Services for Display, Analysis and Interaction in Widely-Accessible, Web-Based Geospatial Platforms Project

    Data.gov (United States)

    National Aeronautics and Space Administration — TerraMetrics, Inc., proposes an SBIR Phase I R/R&D program to investigate and develop a key web services architecture that provides data processing, storage and...

  3. Web Service Description and Discovery Based on Semantic Model

    Institute of Scientific and Technical Information of China (English)

    YANG Xuemei; XU Lizhen; DONG Yisheng; WANG Yongli

    2006-01-01

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

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

    Directory of Open Access Journals (Sweden)

    Xi Zhai

    2016-09-01

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

  5. Daios : Efficient Dynamic Web Service Invocation

    NARCIS (Netherlands)

    Leitner, Philipp; Rosenberg, Florian; Dustdar, Schahram

    2009-01-01

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

  6. International Journal of Web Based Communities

    DEFF Research Database (Denmark)

    2006-01-01

    Special Issue on Knowledge Communication, culture and communities of practice in web based communities. ......Special Issue on Knowledge Communication, culture and communities of practice in web based communities. ...

  7. Web-Based Course Management and Web Services

    Science.gov (United States)

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

    2004-01-01

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

  8. Web based emergency room PACS

    International Nuclear Information System (INIS)

    We wished to develop the web based Picture Archiving and Communication System in the emergency room for early decision making in emergency treatment planning at a full PACS Hospital. The program tools were Microsoft Visual Studio 6.0 - Visual C++ 6.0, and the Microsoft SQL 7.0 under the Microsoft Windows 2000 server operation system. The achievement of images was performed by an auto transport program installed in the ER and the radiology department. The average compression rates were 5:1 for CT and MR, and 20:1 for CR with JPEG 2000 lossy compression. All the images were stored on hard disk for 3 months. The patients' information was displayed for 2 weeks for reducing the security risk. For interdepartmental consultation, patient query by patient hospital number was available. Our Web based ER PACS could be useful system for early decision making for treatment planning in the emergency room because it reduces the risk factors for the security of the Web Paces by using a system independent from PACS in the hospital and minimizing the information patients

  9. Web-based data acquisition

    Institute of Scientific and Technical Information of China (English)

    胡旭东; 俞红; 陈鹰

    2002-01-01

    The research work on Web-based long-distance data acquisition (DAQ) is valuable for application to tele-detection machine faults. With an expert system for machine fault detection, faults in a distantly located machine can be diagnosed through the internet. The distant user logs on to the expert system Web page, fills in the requirements, and starts-up the diagnose process. The system then connects to the DAQ server that is installed in the machine, samples data required for diagnoses through the internet, and sends back diagnose results. In such a long-distance system, Web-based DAQ plays an important role by automatic sampling and transferring of data through the internet. We have built an experimental data acquisition system using a National Instruments AT-MIO-16E-10 board running under Ch language environment. In this experimental example, the user can acquire data online. The principle of this experimental method is introduced in this paper. A detailed programming technique is described with an example.

  10. Semantic web-based intelligent geospatial web services

    CERN Document Server

    Yue, Peng

    2013-01-01

    By introducing Semantic Web technologies into geospatial Web services, this book addresses the semantic description of geospatial data and standards-based Web services, discovery of geospatial data and services, and generation of composite services. Semantic descriptions for geospatial data, services, and geoprocessing service chains are structured, organized, and registered in geospatial catalogue services. The ontology-based approach helps to improve the recall and precision of data and services discovery. Semantics-enabled metadata tracking and satisfaction allows analysts to focus on the g

  11. Web-based Project Reporting System

    Data.gov (United States)

    US Agency for International Development — Web-PRS is a web-based system that captures financial information and project status information that is sortable by geographical location, pillar, project type and...

  12. Dynamic Prediction Method for Web Service QoS Based on Case-based Reasoning%基于事例推理的Web服务QoS动态预测研究

    Institute of Scientific and Technical Information of China (English)

    刘志中; 王志坚; 周晓峰; 娄渊胜; 尚领

    2011-01-01

    随着面向服务计算技术的发展,网络上出现了大量功能相同而服务质量(QoS)有很大差别的Web服务,QoS逐渐成为评价和选择Web服务的重要依据.目前常用Web服务历史QoS的算术平均值来近似服务的QoS,这种度量方法没有考虑Web服务QoS的动态性,不能准确地度量Web服务的QoS,从而造成被选择的Web服务以较大概率不能满足用户的QoS需求.针对这一问题,提出了一种基于事例推理(CBR)的QoS动态预测方法,该方法将Web服务的QoS与服务的外界环境、所处理的任务类型、任务大小关联起来,利用事例推理技术预测Web服务处理新任务时的QoS.实验结果表明,该预测方法能有效地提高Web服务QoS的准确度.%With the rapid growth of functionally similar Web services over the Web,Quality of Services(QoS) is becoming a decisive factor for Web service selection.However, current QoS measurement method generally takes the mean value of Web service history QoS values as the service's QoS, and hasn't taken the dynamic nature of service performance into consideration, and cannot measure QoS of Web services accurately, as a result, many selected services cannot satisfy consumer's QoS constraints.In our framework, a dynamic QoS prediction method based on Case-Based Reasoning(CBR) was provided, this method associates Web service QoS with the environment of service, task type and task size together,when a new service request comes,CBR is applied to predict QoS of the Web service in completing the new request.Experimental results show that, this method can improve accuracies of QoS of Web service effectively.

  13. Web Based Seismological Monitoring (wbsm)

    Science.gov (United States)

    Giudicepietro, F.; Meglio, V.; Romano, S. P.; de Cesare, W.; Ventre, G.; Martini, M.

    Over the last few decades the seismological monitoring systems have dramatically improved tanks to the technological advancements and to the scientific progresses of the seismological studies. The most modern processing systems use the network tech- nologies to realize high quality performances in data transmission and remote controls. Their architecture is designed to favor the real-time signals analysis. This is, usually, realized by adopting a modular structure that allow to easy integrate any new cal- culation algorithm, without affecting the other system functionalities. A further step in the seismic processing systems evolution is the large use of the web based appli- cations. The web technologies can be an useful support for the monitoring activities allowing to automatically publishing the results of signals processing and favoring the remote access to data, software systems and instrumentation. An application of the web technologies to the seismological monitoring has been developed at the "Os- servatorio Vesuviano" monitoring center (INGV) in collaboration with the "Diparti- mento di Informatica e Sistemistica" of the Naples University. A system named Web Based Seismological Monitoring (WBSM) has been developed. Its main objective is to automatically publish the seismic events processing results and to allow displaying, analyzing and downloading seismic data via Internet. WBSM uses the XML tech- nology for hypocentral and picking parameters representation and creates a seismic events data base containing parametric data and wave-forms. In order to give tools for the evaluation of the quality and reliability of the published locations, WBSM also supplies all the quality parameters calculated by the locating program and allow to interactively display the wave-forms and the related parameters. WBSM is a modular system in which the interface function to the data sources is performed by two spe- cific modules so that to make it working in conjunction with a

  14. A Study of Knowledge Mining in Web Based Learning Environment

    Directory of Open Access Journals (Sweden)

    A.Nithya Rani,M.C.A.,M.Phil., M.B.A

    2012-01-01

    Full Text Available For the past several years data mining fields hasbeen rapidly increasing and attract many researchers andusers. This reason for such rapid growth is essential need toderive the useful knowledge automatically from volume of datawhich is accumulated and shared worldwide. From thatstorage education, a web based learning environment maydevelop to offer a practical tool for instructors and learners touse the knowledge for teaching and learning. Web based openand dynamic learning environment to be personalized supportfor learners. In this paper we give a study of knowledge miningin web based learning environments

  15. A Study of Knowledge Mining in Web Based Learning Environment

    OpenAIRE

    A.Nithya Rani,M.C.A.,M.Phil., M.B.A; Dr. Antony Selvdoss Davamani

    2012-01-01

    For the past several years data mining fields hasbeen rapidly increasing and attract many researchers andusers. This reason for such rapid growth is essential need toderive the useful knowledge automatically from volume of datawhich is accumulated and shared worldwide. From thatstorage education, a web based learning environment maydevelop to offer a practical tool for instructors and learners touse the knowledge for teaching and learning. Web based openand dynamic learning environment to be ...

  16. Size-based predictions of food web patterns

    DEFF Research Database (Denmark)

    Zhang, Lai; Hartvig, Martin; Knudsen, Kim;

    2014-01-01

    simulations with varying species richness. To this end, we develop a new size- and trait-based food web model that can be simplified into an analytically solvable size-based model. We confirm existing solutions for the size distribution and derive novel predictions for maximum trophic level and invasion...... of species are continuously distributed on a size-trait axis. It is, however, an open question whether such predictions are valid for a food web with a finite number of species embedded in a network structure. We address this question by comparing the size-based predictions to results from dynamic food web...... resistance. Our results show that the predicted size-spectrum exponent is borne out in the simulated food webs even with few species, albeit with a systematic bias. The predicted maximum trophic level turns out to be an upper limit since simulated food webs may have a lower number of trophic levels...

  17. Consequences of symbiosis for food web dynamics.

    Science.gov (United States)

    Kooi, B W; Kuijper, L D J; Kooijman, S A L M

    2004-09-01

    Basic Lotka-Volterra type models in which mutualism (a type of symbiosis where the two populations benefit both) is taken into account, may give unbounded solutions. We exclude such behaviour using explicit mass balances and study the consequences of symbiosis for the long-term dynamic behaviour of a three species system, two prey and one predator species in the chemostat. We compose a theoretical food web where a predator feeds on two prey species that have a symbiotic relationships. In addition to a species-specific resource, the two prey populations consume the products of the partner population as well. In turn, a common predator forages on these prey populations. The temporal change in the biomass and the nutrient densities in the reactor is described by ordinary differential equations (ODE). Since products are recycled, the dynamics of these abiotic materials must be taken into account as well, and they are described by odes in a similar way as the abiotic nutrients. We use numerical bifurcation analysis to assess the long-term dynamic behaviour for varying degrees of symbiosis. Attractors can be equilibria, limit cycles and chaotic attractors depending on the control parameters of the chemostat reactor. These control parameters that can be experimentally manipulated are the nutrient density of the inflow medium and the dilution rate. Bifurcation diagrams for the three species web with a facultative symbiotic association between the two prey populations, are similar to that of a bi-trophic food chain; nutrient enrichment leads to oscillatory behaviour. Predation combined with obligatory symbiotic prey-interactions has a stabilizing effect, that is, there is stable coexistence in a larger part of the parameter space than for a bi-trophic food chain. However, combined with a large growth rate of the predator, the food web can persist only in a relatively small region of the parameter space. Then, two zero-pair bifurcation points are the organizing centers. In

  18. Architecture of A Scalable Dynamic Parallel WebCrawler with High Speed Downloadable Capability for a Web Search Engine

    CERN Document Server

    Mukhopadhyay, Debajyoti; Ghosh, Soumya; Kar, Saheli; Kim, Young-Chon

    2011-01-01

    Today World Wide Web (WWW) has become a huge ocean of information and it is growing in size everyday. Downloading even a fraction of this mammoth data is like sailing through a huge ocean and it is a challenging task indeed. In order to download a large portion of data from WWW, it has become absolutely essential to make the crawling process parallel. In this paper we offer the architecture of a dynamic parallel Web crawler, christened as "WEB-SAILOR," which presents a scalable approach based on Client-Server model to speed up the download process on behalf of a Web Search Engine in a distributed Domain-set specific environment. WEB-SAILOR removes the possibility of overlapping of downloaded documents by multiple crawlers without even incurring the cost of communication overhead among several parallel "client" crawling processes.

  19. Architecture of A Scalable Dynamic Parallel WebCrawler with High Speed Downloadable Capability for a Web Search Engine

    OpenAIRE

    Mukhopadhyay, Debajyoti; Mukherjee, Sajal; Ghosh, Soumya; Kar, Saheli; Kim, Young-Chon

    2011-01-01

    Today World Wide Web (WWW) has become a huge ocean of information and it is growing in size everyday. Downloading even a fraction of this mammoth data is like sailing through a huge ocean and it is a challenging task indeed. In order to download a large portion of data from WWW, it has become absolutely essential to make the crawling process parallel. In this paper we offer the architecture of a dynamic parallel Web crawler, christened as "WEB-SAILOR," which presents a scalable approach based...

  20. Web-Based Adaptive Testing System

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Due to the maturing of Internet technology, the adaptive testing can be utilized in the web-based environment and the examinee can take the test anywhere and any time. The purpose of the research is to apply item response theory (IRT), adaptive testing theory and web-service technique to construct an XML format itembank and a system of web-based adaptive testing (WAT) by the framework of three-tiered client server distance testing.

  1. Web shop software update and integration with Microsoft Dynamics NAV

    OpenAIRE

    RONDAIJ, TILEN

    2016-01-01

    This thesis presents the update of a web store that and the integration of the web store with the ERP system Microsoft Dynamics NAV. We take a closer look at the current state, at how the web store currently connects to the ERP system and the reasons for updating. We then continue with an analysis of web store functionalities that should be added or updated. A web survey that we sent to our customers is used to additionally support our findings. The main part contains a more detailed analy...

  2. DYNAMIC MANAGEMENT SYSTEM OF EQUIPMENT REPARING BASED ON ANDROID AND WEB%基于 Android和 Web的设备维修动态管理系统

    Institute of Scientific and Technical Information of China (English)

    刘安战; 车战斌; 郭丽

    2014-01-01

    In order to facilitate the implementation of dynamic management process of equipments repairing in production enterprises, improve the management efficiency of equipments ’ trouble calling and repairing, in this paper we propose an Android and Web-based implementation approach for dynamic management system of equipments repairing.The system includes trouble calling access, client, Web-based information management and database.Trouble calling access uses button-call mode, through radio frequency technology and with the help of switching device and access service software it is connected to database.The client is the interaction system on Android platform, and is connected to database by mobile terminal services, it can be used to view, dispatch and confirm the repairing tasks, and can control the procedure by bar code scanning.The Web-based information management provides a way of maintaining and counting the system data through webpage.The system has been tested as a practical application in a certain garment production company, it can effectively improve the management efficiency.The system has the feature of flexible deployment, and is particularly suitable for highly labour-intensive production enterprises.In the case of higher equipments’ trouble calling rate, it improves the equipments repairing and management efficiency.%为了方便生产性企业设备维修动态管理过程的实施,提高设备报修维修管理效率,提出一种基于Android和Web的设备维修动态管理系统实现方法。该系统包括报修接入、客户端、基于Web的信息管理和数据库。报修接入采用按钮呼叫方式,通过无线射频技术,借助转接设备和接入服务软件连接到数据库。客户端是Android平台上的交互系统,通过移动终端服务和数据库相连。客户端可以进行维修任务的查看、派工和确认,可以通过条码扫描对过程进行控制。基于Web的信息管理提供了通过网页对

  3. Ontology Based Qos Driven Web Service Discovery

    Directory of Open Access Journals (Sweden)

    R Suganyakala

    2011-07-01

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

  4. A web based Radiation Oncology Dose Manager with a rich User Interface developed using AJAX, ruby, dynamic XHTML and the new Yahoo/EXT User Interface Library.

    Science.gov (United States)

    Vali, Faisal; Hong, Robert

    2007-01-01

    With the evolution of AJAX, ruby on rails, advanced dynamic XHTML technologies and the advent of powerful user interface libraries for javascript (EXT, Yahoo User Interface Library), developers now have the ability to provide truly rich interfaces within web browsers, with reasonable effort and without third-party plugins. We designed and developed an example of such a solution. The User Interface allows radiation oncology practices to intuitively manage different dose fractionation schemes by helping estimate total dose to irradiated organs. PMID:18694240

  5. Title Based Duplicate Detection of Web Documents

    Directory of Open Access Journals (Sweden)

    Mrs. M. Kiruthika

    2012-09-01

    Full Text Available In recent times, the concept of web crawling has received remarkable significance owing to extreme development of the World Wide Web. Very large amounts of web documents are swarming the web making the search engines less appropriate to the users. Among the vast number of web documents are many duplicates and near duplicates i.e. variants derived from the same original web document due to which additional overheads are created for search engines by which their performance and quality is significantly affected. Web crawling research community has extensively recognized the need for detection of duplicate and near duplicate web pages. Providing the users with relevant results for their queries in the first page without duplicates and redundant results is a vital requisite. Also, this problem of duplication should be avoided to save storage as well as to improve search quality. The near duplicate web pages are detected followed by the storage of crawled web pages in to repositories. The detection of near duplicates conserves network bandwidth, brings down storage cost and enhances the quality of search engines. In this paper, we have discussed a feasible method for detection of near-duplicate web documents based on the title of the documents which will help to reduce the overhead of search engines and improve their performance.

  6. sandflyDST: a dynamic web-based decision support tool for the morphological identification of sandflies present in Anatolia and mainland Europe, and user study.

    Science.gov (United States)

    Karakülah, G; Karakuş, M; Suner, A; Demir, S; Arserim, S K; Töz, S; Özbel, Y

    2016-09-01

    Species identification of sandflies is mainly performed according to morphological characters using classical written identification keys. This study introduces a new web-based decision support tool (sandflyDST) for guiding the morphological identification of sandfly species present in Anatolia and mainland Europe and classified in the Phlebotomus and Sergentomyia genera (both: Diptera: Psychodidae). The current version of the tool consists of 111 questions and 36 drawings obtained from classical written keys, and 107 photographs for the quick and easy identification of 26 species of the genus Phlebotomus and four species of the genus Sergentomyia. The tool guides users through a decision tree using yes/no questions about the morphological characters of the specimen. The tool was applied by 30 individuals, who then completed study questionnaires. The results of subsequent analyses indicated that the usability (x‾SUSScore=75.4) and users' level of appreciation (86.6%) of the tool were quite high; almost all of the participants considered recommending the tool to others. The tool may also be useful in training new entomologists and maintaining their level of expertise. This is a dynamic tool and can be improved or upgraded according to feedback. The tool is now available online at http://parasitology.ege.edu.tr/sandflyDST/index.php. PMID:27339389

  7. WEB BASED TRANSLATION OF CHINESE ORGANIZATION NAME

    Institute of Scientific and Technical Information of China (English)

    Yang Muyun; Liu Daxin; Zhao Tiejun; Qi Haoliang; Lin Kaiming

    2009-01-01

    A web-based translation method for Chinese organization name is proposed. After analyzing the structure of Chinese organization name, the methods of bilingual query formulation and maximum entropy based translation re-ranking are suggested to retrieve the English translation from the web via public search engine. The experiments on Chinese university names demonstrate the validness of this approach.

  8. 基于语义Web Service的Deep Web动态竞争情报采集%Deep Web Dynamic Competitive Intelligence Acquisition Based on Semantic Web Service

    Institute of Scientific and Technical Information of China (English)

    刘高勇; 汪会玲; 吴金红

    2008-01-01

    Deep Web信息资源动态性强、质量高、易于深度分析,使得它成为企业竞争情报采集的重要信息源.但是,目前各种搜索引擎及主题指南等工具不能对Deep Web信息资源有效地进行采集.因此,提出了基于语义Web Setvice的Deep Web的企业动态竞争智能采集体系框架结构,并对该框架下的动态竞争情报采集过程进行了详细论述.

  9. Secure Web Development Based on Vulnerabilities

    OpenAIRE

    Ms. Daljit Kaur Dr. Parminder Kaur

    2012-01-01

    This paper is an effort to develop secure web applications based on known vulnerabilities. It has been seen that in the rapid race of developing web applications in minimum time and budget, security is given least importance as consequence of which web applications are developed and hosted with number of vulnerabilities in them. And in this race, one thing is constant that attackers take advantage of weaknesses existing in technology for financial gain and theft of intellectual property. In t...

  10. Personalization of Rule-based Web Services

    OpenAIRE

    Sang Yong Han; Okkyung Choi

    2008-01-01

    Nowadays Web users have clearly expressed their wishes to receive personalized services directly. Personalization is the way to tailor services directly to the immediate requirements of the user. However, the current Web Services System does not provide any features supporting this such as consideration of personalization of services and intelligent matchmaking. In this research a flexible, personalized Rule-based Web Services System to address these problems and to enable efficient search, d...

  11. Building a dynamic Web/database interface

    OpenAIRE

    Cornell, Julie.

    1996-01-01

    Computer Science This thesis examines methods for accessing information stored in a relational database from a Web Page. The stateless and connectionless nature of the Web's Hypertext Transport Protocol as well as the open nature of the Internet Protocol pose problems in the areas of database concurrency, security, speed, and performance. We examined the Common Gateway Interface, Server API, Oracle's Web/database architecture, and the Java Database Connectivity interface in terms of p...

  12. Distributing flight dynamics products via the World Wide Web

    Science.gov (United States)

    Woodard, Mark; Matusow, David

    1996-01-01

    The NASA Flight Dynamics Products Center (FDPC), which make available selected operations products via the World Wide Web, is reported on. The FDPC can be accessed from any host machine connected to the Internet. It is a multi-mission service which provides Internet users with unrestricted access to the following standard products: antenna contact predictions; ground tracks; orbit ephemerides; mean and osculating orbital elements; earth sensor sun and moon interference predictions; space flight tracking data network summaries; and Shuttle transport system predictions. Several scientific data bases are available through the service.

  13. A Dynamic Defense Modeling and Simulation Methodology using Semantic Web Services

    Directory of Open Access Journals (Sweden)

    Kangsun Lee

    2010-04-01

    Full Text Available Defense Modeling and Simulations require interoperable and autonomous federates in order to fully simulate complex behavior of war-fighters and to dynamically adapt themselves to various war-game events, commands and controls. In this paper, we propose a semantic web service based methodology to develop war-game simulations. Our methodology encapsulates war-game logic into a set of web services with additional semantic information in WSDL (Web Service Description Language and OWL (Web Ontology Language. By utilizing dynamic discovery and binding power of semantic web services, we are able to dynamically reconfigure federates according to various simulation events. An ASuW (Anti-Surface Warfare simulator is constructed to demonstrate the methodology and successfully shows that the level of interoperability and autonomy can be greatly improved.

  14. Web-based Altimeter Service

    Science.gov (United States)

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

    2010-12-01

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

  15. Collisionless Dynamics and the Cosmic Web

    CERN Document Server

    Hahn, Oliver

    2014-01-01

    I review the nature of three-dimensional collapse in the Zeldovich approximation, how it relates to the underlying nature of the three-dimensional Lagrangian manifold and naturally gives rise to a hierarchical structure formation scenario that progresses through collapse from voids to pancakes, filaments and then halos. I then discuss how variations of the Zeldovich approximation (based on the gravitational or the velocity potential) have been used to define classifications of the cosmic large-scale structure into dynamically distinct parts. Finally, I turn to recent efforts to devise new approaches relying on tessellations of the Lagrangian manifold to follow the fine-grained dynamics of the dark matter fluid into the highly non-linear regime and both extract the maximum amount of information from existing simulations as well as devise new simulation techniques for cold collisionless dynamics.

  16. Dynamic selection mechanism for quality of service aware web services

    Science.gov (United States)

    D'Mello, Demian Antony; Ananthanarayana, V. S.

    2010-02-01

    A web service is an interface of the software component that can be accessed by standard Internet protocols. The web service technology enables an application to application communication and interoperability. The increasing number of web service providers throughout the globe have produced numerous web services providing the same or similar functionality. This necessitates the use of tools and techniques to search the suitable services available over the Web. UDDI (universal description, discovery and integration) is the first initiative to find the suitable web services based on the requester's functional demands. However, the requester's requirements may also include non-functional aspects like quality of service (QoS). In this paper, the authors define a QoS model for QoS aware and business driven web service publishing and selection. The authors propose a QoS requirement format for the requesters, to specify their complex demands on QoS for the web service selection. The authors define a tree structure called quality constraint tree (QCT) to represent the requester's variety of requirements on QoS properties having varied preferences. The paper proposes a QoS broker based architecture for web service selection, which facilitates the requesters to specify their QoS requirements to select qualitatively optimal web service. A web service selection algorithm is presented, which ranks the functionally similar web services based on the degree of satisfaction of the requester's QoS requirements and preferences. The paper defines web service provider qualities to distinguish qualitatively competitive web services. The paper also presents the modelling and selection mechanism for the requester's alternative constraints defined on the QoS. The authors implement the QoS broker based system to prove the correctness of the proposed web service selection mechanism.

  17. The GBT Dynamic Scheduling System: Powered by the Web

    Science.gov (United States)

    Marganian, P.; Clark, M.; McCarty, M.; Sessoms, E.; Shelton, A.

    2009-09-01

    The web technologies utilized for the Robert C. Byrd Green Bank Telescope's (GBT) new Dynamic Scheduling System are discussed, focusing on languages, frameworks, and tools. We use a popular Python web framework, TurboGears, to take advantage of the extensive web services the system provides. TurboGears is a model-view-controller framework, which aggregates SQLAlchemy, Genshi, and CherryPy respectively. On top of this framework, Javascript (Prototype, script.aculo.us, and JQuery) and cascading style sheets (Blueprint) are used for desktop-quality web pages.

  18. Web Based Teleoperation of a Humanoid Robot

    OpenAIRE

    Fok, Chien Liang; Sun, Fei; Mangum, Matt; Mok, Al; He, Binghan; Sentis, Luis

    2016-01-01

    The Cloud-based Advanced Robotics Laboratory (CARL) integrates a whole body controller and web-based teleoperation to enable any device with a web browser to access and control a humanoid robot. By integrating humanoid robots with the cloud, they are accessible from any Internet-connected device. Increased accessibility is important because few people have access to state-of-the-art humanoid robots limiting their rate of development. CARL's implementation is based on modern software libraries...

  19. A Novel Inconsistency Prevention Approach to Dynamic Updating of Web Applications

    Directory of Open Access Journals (Sweden)

    Seyed Habib Seifzadeh

    2013-01-01

    Full Text Available Software update requires that running program is stopped, patched and then restarted from start. This cycle mainly causes disruptions to the programs' execution which may be undesirable. Disruptions could turn out to be more problematic in the web applications, because they usually have to provide round-the-clock services. Nowadays, there are systems called Dynamic Updating Systems which are able to update programs without disruption. However, a dynamic updating system capable of updating web applications is infrequent to date. The present study aims to propose approaches needed to compose a web-based dynamic updating system. Providing these approaches, we have focused on preserving programs' consistency. To this end, different states of a web application are considered, and actions which the dynamic updating system must perform in each state are described. This paper concludes with a discussion about the implementation and the evaluation of the proposed approaches.

  20. Dynamic handling for cooperating scientific web services

    OpenAIRE

    Cushing, R.; Koulouzis, S.; Belloum, A.; Bubak, M.

    2011-01-01

    Many e-Science applications are increasingly relying on orchestrating workflows of static web services. The static nature of these web services means that workflow managment systems have no control over the underlying mechanics of such services. This lack of control manifests itself as a problem as optimization techniques such as data-locality aware deployment and clustering cooperating services are very difficult, if not impossible, to achieve. In this paper propose a non-intrusive approach ...

  1. BrainBrowser: distributed, web-based neurological data visualization.

    Science.gov (United States)

    Sherif, Tarek; Kassis, Nicolas; Rousseau, Marc-Étienne; Adalat, Reza; Evans, Alan C

    2014-01-01

    Recent years have seen massive, distributed datasets become the norm in neuroimaging research, and the methodologies used to analyze them have, in response, become more collaborative and exploratory. Tools and infrastructure are continuously being developed and deployed to facilitate research in this context: grid computation platforms to process the data, distributed data stores to house and share them, high-speed networks to move them around and collaborative, often web-based, platforms to provide access to and sometimes manage the entire system. BrainBrowser is a lightweight, high-performance JavaScript visualization library built to provide easy-to-use, powerful, on-demand visualization of remote datasets in this new research environment. BrainBrowser leverages modern web technologies, such as WebGL, HTML5 and Web Workers, to visualize 3D surface and volumetric neuroimaging data in any modern web browser without requiring any browser plugins. It is thus trivial to integrate BrainBrowser into any web-based platform. BrainBrowser is simple enough to produce a basic web-based visualization in a few lines of code, while at the same time being robust enough to create full-featured visualization applications. BrainBrowser can dynamically load the data required for a given visualization, so no network bandwidth needs to be waisted on data that will not be used. BrainBrowser's integration into the standardized web platform also allows users to consider using 3D data visualization in novel ways, such as for data distribution, data sharing and dynamic online publications. BrainBrowser is already being used in two major online platforms, CBRAIN and LORIS, and has been used to make the 1TB MACACC dataset openly accessible. PMID:25628562

  2. BrainBrowser: distributed, web-based neurological data visualization

    Directory of Open Access Journals (Sweden)

    Tarek eSherif

    2015-01-01

    Full Text Available Recent years have seen massive, distributed datasets become the norm in neuroimaging research, and the methodologies used analyze them have, in response, become more collaborative and exploratory. Tools and infrastructure are continuously being developed and deployed to facilitate research in this context: grid computation platforms to process the data, distributed data stores to house and share them, high-speed networks to move them around and collaborative, often web-based, platforms to provide access to and sometimes manage the entire system. BrainBrowser is a lightweight, high-performance JavaScript visualization library built to provide easy-to-use, powerful, on-demand visualization of remote datasets in this new research environment. BrainBrowser leverages modern Web technologies, such as WebGL, HTML5 and Web Workers, to visualize 3D surface and volumetric neuroimaging data in any modern web browser without requiring any browser plugins. It is thus trivial to integrate BrainBrowser into any web-based platform. BrainBrowser is simple enough to produce a basic web-based visualization in a few lines of code, while at the same time being robust enough to create full-featured visualization applications. BrainBrowser can dynamically load the data required for a given visualization, so no network bandwidth needs to be waisted on data that will not be used. BrainBrowser's integration into the standardized web platform also allows users to consider using 3D data visualization in novel ways, such as for data distribution, data sharing and dynamic online publications. BrainBrowser is already being used in two major online platforms, CBRAIN and LORIS, and has been used to make the 1TB MACACC dataset openly accessible.

  3. SEMANTIC BASED MULTIPLE WEB SEARCH ENGINE

    Directory of Open Access Journals (Sweden)

    MS.S.LATHA SHANMUGAVADIVU,

    2010-08-01

    Full Text Available With the tremendous growth of information available to end users through the Web, search engines come to play ever a more critical role. Nevertheless, because of their general-purpose approach, it is always less uncommon that obtained result sets provide a burden ofuseless pages. The next-generation Web architecture, represented by the Semantic Web, provides the layered architecture possibly allowing overcoming this limitation. Several search engines have been proposed, which allow increasing information retrieval accuracy by exploiting a key content of Semantic Web resources, that is, relations. To make the Semantic Web work, well-structured data andrules are necessary for agents to roam the Web [2]. XML and RDF are two important technologies: we can create our own structures by XML without indicating what they mean; RDF uses sets of triples which express basic concepts [2]. DAML is the extension of XML and RDF The aim of this project is to develop a search engine based on ontologymatching within the Semantic Web. It uses the data in Semantic Web form such as DAML or RDF. When the user input a query, the program accepts the query and transfers it to a machine learning agent. Then the agent measures the similarity between different ontology’s, and feedback the matched item to the user.

  4. A Web-Based Breastfeeding Education Program

    OpenAIRE

    Cheng, Wei-Chen (Phoebe); Thompson, Cheryl B.; Smith, Jackie A.; Pugh, Leigh; Stanley, Claire

    2003-01-01

    Two Web-based breastfeeding programs were developed to provide new parents with necessary information on proper breastfeeding techniques. One version was plain text and the other version combined text with graphics. The computer was viewed as a valuable learning tool. The breastfeeding program that contained graphics was preferred over the text-only program. Educators are encouraged to use Web-based graphic programs to provide breastfeeding education to new parents.

  5. Subject Acquisition for Web-Based Surveys

    OpenAIRE

    Alvarez, R. Michael; Sherman, Robert P.; VanBeselaere, Clara

    2003-01-01

    This article provides a basic report about subject recruitment processes for Web-based surveys. Using data from our ongoing Internet Survey of American Opinion project, two different recruitment techniques (banner advertisement and subscription campaigns) are compared. This comparison, together with a typology of Web-based surveys, provides insight into the validity and generalizability of Internet survey data. The results from this analysis show that, although Internet survey respondents dif...

  6. Web-based Digital Lexicographic Bilingual Resources

    Directory of Open Access Journals (Sweden)

    Ralitsa Dutsova

    2015-12-01

    Full Text Available Web-based Digital Lexicographic Bilingual ResourcesThe paper presents briefly a web-based system for creation and management of bilingual resources with Bulgarian as one of the paired language. This is useful and easy to use tool for collection and management of a large amount of different linguistic knowledge. The system uses two sets of natural language data: bilingual dictionary and aligned text corpora

  7. HTTPI BASED WEB SERVICE SECURITY OVER SOAP

    Directory of Open Access Journals (Sweden)

    Pankaj Choudhary

    2013-06-01

    Full Text Available Now a days, a new family of web applications 'open applications’, are emerging (e.g., Social Networking, News and Blogging. Generally, these open applications are non-confidential. The security needs of these applications are only client/server authentication and data integrity. For securing these open applications, effectively and efficiently, HTTPI, a new transport protocol is proposed, which ensures the entire security requirements of open applications. Benefit of using the HTTPI is that it is economical in use, well-suited for cache proxies, like HTTP is, and provides security against many Internet attacks (Server Impersonation and Message Modification like HTTPS does. In terms of performance HTTPI is very close to the HTTP, but much better than HTTPS. A Web service is a method of communication between two ends over the Internet. These web services are developed over XML and HTTP. Today, most of the open applications use web services for most of their operations. For securing these web services, security design based on HTTPI is proposed. Our work involves securing the web services over SOAP, based on the HTTPI. This secure web service might be applicable for open applications, where authentication and integrity is needed, but no confidentiality required. In our paper, we introduce a web service security model based on HTTPI protocol over SOAP and develop a preliminary implementation of this model. We also analyze the performance of our approach through an experiment and show that our proposed approach provides higher throughput, lower average response time and lower response size than HTTPS based web service security approach.

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

    Directory of Open Access Journals (Sweden)

    Mr. Manishkumar R. Solanki

    2014-04-01

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

  9. Evolution of Web-based International Marketing

    DEFF Research Database (Denmark)

    Rask, Morten

    2002-01-01

    Companies that have been doing international business do not usually make the transition from traditional marketers to full-blown Web marketers in one sharp step. In our study of Danish firms, we found that in terms of the evolution of their Web strategies, these Danish companies went through three...... a learning process in terms of handling the rising degree of interaction intensity. The corporate organization has to evolve to meet the demands of increasing Web-based interactions. These demands are discussed in terms of automation, formalization, integration, and evaluation....

  10. Web-Based Computing Resource Agent Publishing

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Web-based Computing Resource Publishing is a efficient way to provide additional computing capacity for users who need more computing resources than that they themselves could afford by making use of idle computing resources in the Web.Extensibility and reliability are crucial for agent publishing. The parent-child agent framework and primary-slave agent framework were proposed respectively and discussed in detail.

  11. Web-based Spatial Information Management Systems

    OpenAIRE

    Carswell, James

    2002-01-01

    In this paper we discuss the innovative software solutions offered by e-SpatialTM technology for the deployment of web-based and mobile spatial information management systems. This technology has been developed within the Oracle 9i Database environment and allows users to build and deploy spatially enabled Internet applications on any Oracle supported hardware platform and on any device running a Java Virtual Machine (e.g., standard web browsers, PDAs and other mobile devices). The paper focu...

  12. Developing a web-based SKOS editor

    OpenAIRE

    Conway, Mike; Khojoyan, Artem; Fana, Fariba; Scuba, William; Castine, Melissa; Mowery, Danielle; Chapman, Wendy; Jupp, Simon

    2016-01-01

    Background The Simple Knowledge Organization System (SKOS) was introduced to the wider research community by a 2005 World Wide Web Consortium (W3C) working draft, and further developed and refined in a 2009 W3C recommendation. Since then, SKOS has become the de facto standard for representing and sharing thesauri, lexicons, vocabularies, taxonomies, and classification schemes. In this paper, we describe the development of a web-based, free, open-source SKOS editor built for the development, c...

  13. Mesoscale symmetries explain dynamical equivalence of food webs

    CERN Document Server

    Aufderheide, Helge; Gross, Thilo

    2012-01-01

    A present challenge in complex systems is to identify mesoscale structures that have distinct dynamical implications. In this paper we present a detailed investigation of a previously observed dynamical equivalence of certian ecological food webs. We show that this equivalence is rooted in mesoscale symmetries that exist in these webs. Certain eigenvectors of the Jacobian describing dynamical modes of the system, such as specific instabilities or responses to perturbations, localize on these symmetric motifs. On the one hand this means that by removing a symmetry from the network one obtains a system which has identical dynamics except for the removal of the localized mode. This explains the previously observed equivalence. On the other hand it means that we can identify dynamical modes that only depend on the symmetric motif. Symmetric structures thus provide an example for mesoscale network motifs having distinct and exact implications for the dynamics.

  14. Secure Web Development Based on Vulnerabilities

    Directory of Open Access Journals (Sweden)

    Ms. Daljit Kaur Dr. Parminder Kaur

    2012-02-01

    Full Text Available This paper is an effort to develop secure web applications based on known vulnerabilities. It has been seen that in the rapid race of developing web applications in minimum time and budget, security is given least importance as consequence of which web applications are developed and hosted with number of vulnerabilities in them. And in this race, one thing is constant that attackers take advantage of weaknesses existing in technology for financial gain and theft of intellectual property. In this proposed method of secure web development, most common vulnerabilities and their occurrence in development process is discussed. Mapping vulnerabilities to the actions needed to take during development process may help developers to understand vulnerability and avoid vulnerabilities in application.

  15. A Generic and Dynamic Framework for Web Publishing of Bioinformatics Databases

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    The present paper covers a generic and dynamic framework for the web publishing of bioinformatics databases based upon a meta data design, Java Bean, Java Server Page(JSP), Extensible Markup Language(XML), Extensible Stylesheet Language(XSL) and Extensible Stylesheet Language Transformation(XSLT). In this framework, the content is stored in a configurable and structured XML format, dynamically generated from an Oracle Relational Database Management System(RDBMS). The presentation is dynamically generated by transforming the XML document into HTML through XSLT.This clean separation between content and presentation makes the web publishing more flexible; changing the presentation only needs a modification of the Extensive Stylesheet(XS).

  16. 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…

  17. Web-based Remote Control by LiveConnect

    Directory of Open Access Journals (Sweden)

    Reinhard Langmann

    2005-06-01

    Full Text Available This paper deals with the application of LiveConnect for the remote control of real devices/stations over the Web. In this context, both the concept of Lean Web Automation and a flexible Java-based application tool have been developed ensuring a fast and secure process data transfer between device-server and Web browser by the subscriber/publisher principle. Index Term: Web-based remote control, Lean Web Automation, teletechnology, Web Access Kit.

  18. Integrating GIS Web services based on mediating architecture

    Institute of Scientific and Technical Information of China (English)

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

    2004-01-01

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

  19. Dynamic "inline" images: context-sensitive retrieval and integration of images into Web documents.

    Science.gov (United States)

    Kahn, Charles E

    2008-09-01

    Integrating relevant images into web-based information resources adds value for research and education. This work sought to evaluate the feasibility of using "Web 2.0" technologies to dynamically retrieve and integrate pertinent images into a radiology web site. An online radiology reference of 1,178 textual web documents was selected as the set of target documents. The ARRS GoldMiner image search engine, which incorporated 176,386 images from 228 peer-reviewed journals, retrieved images on demand and integrated them into the documents. At least one image was retrieved in real-time for display as an "inline" image gallery for 87% of the web documents. Each thumbnail image was linked to the full-size image at its original web site. Review of 20 randomly selected Collaborative Hypertext of Radiology documents found that 69 of 72 displayed images (96%) were relevant to the target document. Users could click on the "More" link to search the image collection more comprehensively and, from there, link to the full text of the article. A gallery of relevant radiology images can be inserted easily into web pages on any web server. Indexing by concepts and keywords allows context-aware image retrieval, and searching by document title and subject metadata yields excellent results. These techniques allow web developers to incorporate easily a context-sensitive image gallery into their documents.

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

    Institute of Scientific and Technical Information of China (English)

    LIU Feng; LEI Zhen-ming

    2009-01-01

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

  1. Development of an Efficient QoS based Web Services Compositions Mechanism for Semantic Web

    Directory of Open Access Journals (Sweden)

    N.K. Sakthivel

    2012-04-01

    Full Text Available Web Services are mounting as an inventive mechanism for rendering services to subjective devices over the WWW. As a consequence of the rapid growth of Web Services applications and the plenty of Service Providers, the consumer is facing with the inevitability of selecting the “right” Service Provider. In such a scenario the Quality of Service (QoS serves as a target to differentiate Service Providers. To select the best Web Services / Service Providers, Ranking and Optimization of Web Service Compositions are challenging areas of research with significant implications for the realization of the “Web of Services” revelation. The “Semantic Web Services” use formal semantic descriptions of Web Service functionality and interface to enable automated reasoning over Web Service Compositions. This study from its experimental results revealed that the existing Semantic Web Services faces a few challenging issues such as poor prediction of best Web Services and optimized Service Providers, which leads to QoS degradation of Semantic Web. To address and overcome these identified issues, this research work is calculating the semantic similarities, utilization of various Web Services and Service Providers. After measuring these parameters, all the Web Services are ranked based on their Utilization. Finally, our proposed technique, selected best Web Services based on their ranking and placed in Web Services Composition. From the experimental results, it is established that our proposed mechanism improves the performance of Semantic Web in terms of Execution Time, Processor Utilization and Memory Management.

  2. Web Based ‘C’ IDE: Approach

    Directory of Open Access Journals (Sweden)

    Sravanthi Emani

    2012-03-01

    Full Text Available A Web based environment has been designed to execute C programs without explicitly installing any compilers on the machine, thus addressing the concerns of portability and accessibility. Theenvironment runs on a Linux server, uses password authentication and provides each user with separate project directories to store all his programs. These can be accessed and modified by the respective useronly. The entered code can be compiled and executed easily without using licensed software for the same. This saves installation time as well as memory of the client machine. The configuration of the machineneed not be an issue as the system is web based and thus platform independent.

  3. Expert system for web based collaborative CAE

    Science.gov (United States)

    Hou, Liang; Lin, Zusheng

    2006-11-01

    An expert system for web based collaborative CAE was developed based on knowledge engineering, relational database and commercial FEA (Finite element analysis) software. The architecture of the system was illustrated. In this system, the experts' experiences, theories and typical examples and other related knowledge, which will be used in the stage of pre-process in FEA, were categorized into analysis process and object knowledge. Then, the integrated knowledge model based on object-oriented method and rule based method was described. The integrated reasoning process based on CBR (case based reasoning) and rule based reasoning was presented. Finally, the analysis process of this expert system in web based CAE application was illustrated, and an analysis example of a machine tool's column was illustrated to prove the validity of the system.

  4. Anonymity And Accountability In Web Based Transactions

    Directory of Open Access Journals (Sweden)

    H.Jayasree

    2012-04-01

    Full Text Available Decreased privacy is an unavoidable consequence in the drive to make the world a more secure, safer place, according to some analysts. In the on-line world, the conflict between privacy and security manifests itself in a debate between anonymity and accountability. Balance between Anonymity and Accountability is a major concern in web based transactions. The protection of users’ privacy when performing web-based transactions is an important factor in the acceptance and use of Internet and web services. There is a tremendous improvement in the automation of the way we pay for goods and services by the variety and growth of electronic banking services available to the consumers. Hence there is a need for the ultimate structure of the new electronic transaction system that has a substantial impact on the personal privacy as well as on the nature and extent of criminal use of E- transactions. This paper presents an approach for such structure.

  5. 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....

  6. Construction of Community Web Directories based on Web usage Data

    CERN Document Server

    Sandhyarani, Ramancha; Gyani, Jayadev; 10.5121/acij.2012.3205

    2012-01-01

    This paper support the concept of a community Web directory, as a Web directory that is constructed according to the needs and interests of particular user communities. Furthermore, it presents the complete method for the construction of such directories by using web usage data. User community models take the form of thematic hierarchies and are constructed by employing clustering approach. We applied our methodology to the ODP directory and also to an artificial Web directory, which was generated by clustering Web pages that appear in the access log of an Internet Service Provider. For the discovery of the community models, we introduced a new criterion that combines a priori thematic informativeness of the Web directory categories with the level of interest observed in the usage data. In this context, we introduced and evaluated new clustering method. We have tested the methodology using access log files which are collected from the proxy servers of an Internet Service Provider and provided results that ind...

  7. A Study of the Effectiveness of Web-Based Homework in Teaching Undergraduate Business Statistics

    Science.gov (United States)

    Palocsay, Susan W.; Stevens, Scott P.

    2008-01-01

    Web-based homework (WBH) Technology can simplify the creation and grading of assignments as well as provide a feasible platform for assessment testing, but its effect on student learning in business statistics is unknown. This is particularly true of the latest software development of Web-based tutoring agents that dynamically evaluate individual…

  8. Browser-based Analysis of Web Framework Applications

    Directory of Open Access Journals (Sweden)

    Benjamin Kersten

    2010-09-01

    Full Text Available Although web applications evolved to mature solutions providing sophisticated user experience, they also became complex for the same reason. Complexity primarily affects the server-side generation of dynamic pages as they are aggregated from multiple sources and as there are lots of possible processing paths depending on parameters. Browser-based tests are an adequate instrument to detect errors within generated web pages considering the server-side process and path complexity a black box. However, these tests do not detect the cause of an error which has to be located manually instead. This paper proposes to generate metadata on the paths and parts involved during server-side processing to facilitate backtracking origins of detected errors at development time. While there are several possible points of interest to observe for backtracking, this paper focuses user interface components of web frameworks.

  9. A semantically enriched web usage based recommendation model

    CERN Document Server

    Ramesh, C; Govardhan, A

    2011-01-01

    With the rapid growth of internet technologies, Web has become a huge repository of information and keeps growing exponentially under no editorial control. However the human capability to read, access and understand Web content remains constant. This motivated researchers to provide Web personalized online services such as Web recommendations to alleviate the information overload problem and provide tailored Web experiences to the Web users. Recent studies show that Web usage mining has emerged as a popular approach in providing Web personalization. However conventional Web usage based recommender systems are limited in their ability to use the domain knowledge of the Web application. The focus is only on Web usage data. As a consequence the quality of the discovered patterns is low. In this paper, we propose a novel framework integrating semantic information in the Web usage mining process. Sequential Pattern Mining technique is applied over the semantic space to discover the frequent sequential patterns. Th...

  10. CMS OnlineWeb-Based Monitoring

    CERN Document Server

    Wan, Zongru; Chakaberia, Irakli; Lopez-Perez, Juan Antonio; Maeshima, Kaori; Maruyama, Sho; Soha, Aron; Sulmanas, Balys; Wan, Zongru

    2012-01-01

    For large international High Energy Physics experiments, modern web technologies make the online monitoring of detector status, data acquisition status, trigger rates, luminosity, etc., accessible for the collaborators anywhere and anytime. This helps the collaborating experts monitor the status of the experiment, identify the problems, and improve data-taking efficiency. We present the Web-Based Monitoring project of the CMS experiment at the LHC of CERN. The data sources are relational databases and various messaging systems. The project provides a vast amount of in-depth information including real time data, historical trend, and correlations, in a user friendly way.

  11. DYNAMIC MODELLING APPROACH FOR WEB USAGE MINING USING OPEN WEB RESOURCES

    Directory of Open Access Journals (Sweden)

    B. NAVEENA DEVI

    2010-10-01

    Full Text Available Predicting of users browsing behavior is an important technology of E-commerce application. The prediction results can be used for personalization. Building proper web site, improving marketing strategy , promotion, product supply, getting marketing information, forecasting market trends and increasing the competitive strength of enterprises etc., In this paper proposed system used open web resources practical e-business data sets for the development of innovative e-business applications with in a short period of time to achieve dynamical and statistical analysis result to the enterprise.

  12. Web-Based Learning Design Tool

    Science.gov (United States)

    Bruno, F. B.; Silva, T. L. K.; Silva, R. P.; Teixeira, F. G.

    2012-01-01

    Purpose: The purpose of this paper is to propose a web-based tool that enables the development and provision of learning designs and its reuse and re-contextualization as generative learning objects, aimed at developing educational materials. Design/methodology/approach: The use of learning objects can facilitate the process of production and…

  13. Web-based applications for virtual laboratories

    NARCIS (Netherlands)

    Bier, H.H.

    2011-01-01

    Web-based applications for academic education facilitate, usually, exchange of multimedia files, while design-oriented domains such as architectural and urban design require additional support in collaborative real-time drafting and modeling. In this context, multi-user interactive interfaces employ

  14. Towards Web Service-Based Educational Systems

    Science.gov (United States)

    Sampson, Demetrios G.

    2005-01-01

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

  15. Evaluating Web-Based Learning Systems

    Science.gov (United States)

    Pergola, Teresa M.; Walters, L. Melissa

    2011-01-01

    Accounting educators continuously seek ways to effectively integrate instructional technology into accounting coursework as a means to facilitate active learning environments and address the technology-driven learning preferences of the current generation of students. Most accounting textbook publishers now provide interactive, web-based learning…

  16. Web-Based Training and Corporate America.

    Science.gov (United States)

    Lee, Doris; Chamers, Terri

    Recent issues of training, computer, and management magazines all suggest that Web-based training (WBT) is the best way to reach geographically dispersed employees quickly and at low costs. The purpose of this paper is to explore the many unique characteristics of WBT and to discuss important issues related to the use of WBT in a corporate…

  17. Understanding adherence to web-based interventions

    NARCIS (Netherlands)

    Kelders, S.M.

    2012-01-01

    Although eHealth technologies and especially web-based interventions for the promotion of health and health related behavior have been shown to be effective, the impact is hindered by non-adherence: while many eHealth interventions reach a large group of participants, not all of these participants c

  18. Maximum Spanning Tree Model on Personalized Web Based Collaborative Learning in Web 3.0

    CERN Document Server

    Padma, S

    2012-01-01

    Web 3.0 is an evolving extension of the current web environme bnt. Information in web 3.0 can be collaborated and communicated when queried. Web 3.0 architecture provides an excellent learning experience to the students. Web 3.0 is 3D, media centric and semantic. Web based learning has been on high in recent days. Web 3.0 has intelligent agents as tutors to collect and disseminate the answers to the queries by the students. Completely Interactive learner's query determine the customization of the intelligent tutor. This paper analyses the Web 3.0 learning environment attributes. A Maximum spanning tree model for the personalized web based collaborative learning is designed.

  19. Web based remote instrumentation and control

    International Nuclear Information System (INIS)

    The Web-based technology provides a very powerful communication medium for transmitting effectively multimedia information containing data generated from various sources, which may be in the form of audio, video, text, still or moving images etc. Large number of sophisticated web based software tools are available that can be used to monitor and control distributed electronic instrumentation projects. For example data can be collected online from various smart sensors/instruments such as images from CCD camera, pressure/ humidity sensor, light intensity transducer, smoke detectors etc and uploaded in real time to a central web server. This information can be processed further, to take control action in real time from any remote client, of course with due security care. The web-based technology offers greater flexibility, higher functionality, and high degree of integration providing standardization. Further easy to use standard browser based interface at the client end to monitor, view and control the desired process parameters allow you to cut down the development time and cost to a great extent. A system based on a web client-server approach has been designed and developed at Computer division, BARC and is operational since last year to monitor and control remotely various environmental parameters of distributed computer centers. In this paper we shall discuss details of this system, its current status and additional features which are currently under development. This type of system is typically very useful for Meteorology, Environmental monitoring of Nuclear stations, Radio active labs, Nuclear waste immobilization plants, Medical and Biological research labs., Security surveillance and in many such distributed situations. A brief description of various tools used for this project such as Java, CGI, Java Script, HTML, VBScript, M-JPEG, TCP/IP, UDP, RTP etc. along with their merits/demerits have also been included

  20. Studying Human Dynamics Through Web Analytics

    Science.gov (United States)

    Ramasco, Jose; Goncalves, Bruno

    2008-03-01

    When Tim Berners Lee, a physicist at the European Center for Nuclear Research (CERN) first conceived the World Wide Web (WWW) in 1990 as a way to facilitate the sharing of scientific information and results among the centers different researchers and groups, even the most ingenious of science fiction writers could not have imagined the role it would come to play in the following decades. The increasing ubiquitousness of Internet access and the frequency with which people interact with it raise the possibility of using it to better observe, understand, and even monitor several aspects of human social behavior. Websites with large numbers of frequently returning users, such as search engines, company or university websites, are ideal for this task. The properly anonymized logs detailing the access history to Emory University's website is studied. We find that a small number of users is responsible for a finite fraction of the total activity. A saturation phenomenon is observed where, certain connections age, becoming less attractive to new activity over time. Finally, by measuring the average activity as a function of the day of the week, we find that productivity seems to be higher on Tuesdays and Wednesdays, with Sundays being the least active day.

  1. WEB SERVICE BASED RELIABLE - SHELTERED MEDI HELPER

    Directory of Open Access Journals (Sweden)

    L.Priya

    2011-01-01

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

  2. Evaluation Method of Web Site Structure Based on Web Structure Mining

    Institute of Scientific and Technical Information of China (English)

    Li Jun-e; Zhou Dong-ru

    2003-01-01

    The structure of Web site hecarne more complex titan before. During the design period of a Web site, the lack of model and method results in improper Web structure,which depend on the designer's experience. From the point of view of software engineering, every period in the software life must be evaluated before starting the next period's work. It is very important and essential to search relevant methods for evaluating Web structure before the site is completed. In this work, after studying the related work about the Web struc lure mining and analyzing the major structure mining methods (Page-rank and Hub/Authority), a method based on the Page-rank for Web structure evaluation in design stage is proposecL A Web structure modeling language WSML is designed, and the implement strategies for evaluating system of the Web site structure are given out. Web structure mining has being used mainly in search engines before. It is the first time to employ the Web structure mining technology to evaluate a Web structure in the design period of a Web site. It contributes to the formalization of the design documents for Web site and the improving of software engineering for large scale Web site, and the evaluating system is a practical tool for Web site construction.

  3. A Web-based Architecture Enabling Multichannel Telemedicine Applications

    Directory of Open Access Journals (Sweden)

    Fabrizio Lamberti

    2003-02-01

    Full Text Available Telemedicine scenarios include today in-hospital care management, remote teleconsulting, collaborative diagnosis and emergency situations handling. Different types of information need to be accessed by means of etherogeneous client devices in different communication environments in order to enable high quality continuous sanitary assistance delivery wherever and whenever needed. In this paper, a Web-based telemedicine architecture based on Java, XML and XSL technologies is presented. By providing dynamic content delivery services and Java based client applications for medical data consultation and modification, the system enables effective access to an Electronic Patient Record based standard database by means of any device equipped with a Web browser, such as traditional Personal Computers and workstation as well as modern Personal Digital Assistants. The effectiveness of the proposed architecture has been evaluated in different scenarios, experiencing fixed and mobile clinical data transmissions over Local Area Networks, wireless LANs and wide coverage telecommunication network including GSM and GPRS.

  4. RESEARCH ON REUSE-BASED WEB SERVICES COMPOSITION

    Institute of Scientific and Technical Information of China (English)

    Rao Yuan; Li Zunchao; Feng Boqin

    2005-01-01

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

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

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

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

  6. Use of web-based simulators and YouTube for teaching of Magnetic Resonance Imaging

    DEFF Research Database (Denmark)

    Hanson, Lars G.

    Interactive web-based software for teaching of 3D vector dynamics involved in Magnetic Resonance Imaging (MRI) was developed. The software is briefly discussed along with the background, design, implementation, dissemination and educational value....

  7. The web based user interface of RODOS

    International Nuclear Information System (INIS)

    and platform independent web technology. This enables accessing the RODOS systems by remote users from all kinds of computer platforms with Internet browser. The layout and content structure of this web interface have been designed and developed with a unique standardized interface layout and information structure under due consideration of the needs of the RODOS users. Two types of web-based interfaces have been realized: category B: active user with access to the RODOS system via web browser. The interaction with RODOS is limited to the level (2) and (3) mentioned above: category B users can only define interactive runs via input forms and select results from predefined information. They have no access to data bases and cannot operate RODOS in its automatic mode. Category C: passive user with access via web browser and - if desired - via X-desktop only to RODOS results produced by users of category A or B. The category B users define their requests to the RODOS system via an interactive Web-based interface. The corresponding HTML file is sent to the RODOS Web server. lt transforms the information into RODOS compatible input data, initiates the corresponding RODOS runs, produces an HTML results file and returns it to the web browser. The web browser receives the HTML file, it interprets the page content and displays the page. The layout, content and functions of the new web based interface for category B and category C users will be demonstrated. Example interactive runs will show the interaction with the RODOS system. fig. 1 (author)

  8. Web Based Genetic Algorithm Using Data Mining

    OpenAIRE

    Ashiqur Rahman; Asaduzzaman Noman; Md. Ashraful Islam; Al-Amin Gaji

    2016-01-01

    This paper presents an approach for classifying students in order to predict their final grade based on features extracted from logged data in an education web-based system. A combination of multiple classifiers leads to a significant improvement in classification performance. Through weighting the feature vectors using a Genetic Algorithm we can optimize the prediction accuracy and get a marked improvement over raw classification. It further shows that when the number of features is few; fea...

  9. Web-Based Information Extraction Technology

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Information extraction techniques on the Web are the current research hotspot. Now many information extraction techniques based on different principles have appeared and have different capabilities. We classify the existing information extraction techniques by the principle of information extraction and analyze the methods and principles of semantic information adding, schema defining,rule expression, semantic items locating and object locating in the approaches. Based on the above survey and analysis,several open problems are discussed.

  10. Dynamics of The Tranquil Cosmic Web

    Science.gov (United States)

    Nusser, Adi

    2016-10-01

    The phase space distribution of matter out to ~ 100 \\rm Mpc is probed by two types of observational data: galaxy redshift surveys and peculiar motions of galaxies. Important information on the process of structure formation and deviations from standard gravity have been extracted from the accumulating data. The remarkably simple Zel'dovich approximation is the basis for much of our insight into the dynamics of structure formation and the development of data analyses methods. Progress in the methodology and some recent results is reviewed.

  11. Dynamics of The Tranquil Cosmic Web

    CERN Document Server

    Nusser, Adi

    2014-01-01

    The phase space distribution of matter out to $\\sim 100 \\rm Mpc$ is probed by two types of observational data: galaxy redshift surveys and peculiar motions of galaxies. Important information on the process of structure formation and deviations from standard gravity have been extracted from the accumulating data. The remarkably simple Zel'dovich approximation is the basis for much of our insight into the dynamics of structure formation and the development of data analyses methods. Progress in the methodology and some recent results is reviewed.

  12. Android Based Area Web Monitoring

    Directory of Open Access Journals (Sweden)

    Kanigoro Bayu

    2014-03-01

    Full Text Available The research objective is to develop an application that can be used in the monitoring of an area by using a webcam. It aims to create a sense of security on the user's application because it can monitor an area using mobile phone anywhere. The results obtained in this study is to create an area with a webcam monitoring application that can be accessed anywhere as long as the monitoring results have internet access and can also be accessed through Android Based Mobile Phone.

  13. Android Based Area Web Monitoring

    OpenAIRE

    Kanigoro Bayu; Salman Afan Galih; Moniaga Jurike V; Chandra Eric; Chandra Zein Rezky

    2014-01-01

    The research objective is to develop an application that can be used in the monitoring of an area by using a webcam. It aims to create a sense of security on the user's application because it can monitor an area using mobile phone anywhere. The results obtained in this study is to create an area with a webcam monitoring application that can be accessed anywhere as long as the monitoring results have internet access and can also be accessed through Android Based Mobile Phone.

  14. Android Based Area Web Monitoring

    Science.gov (United States)

    Kanigoro, Bayu; Galih Salman, Afan; Moniaga, Jurike V.; Chandra, Eric; Rezky Chandra, Zein

    2014-03-01

    The research objective is to develop an application that can be used in the monitoring of an area by using a webcam. It aims to create a sense of security on the user's application because it can monitor an area using mobile phone anywhere. The results obtained in this study is to create an area with a webcam monitoring application that can be accessed anywhere as long as the monitoring results have internet access and can also be accessed through Android Based Mobile Phone.

  15. Emerging hierarchies in dynamically adapting webs

    Science.gov (United States)

    Katifori, Eleni; Graewer, Johannes; Magnasco, Marcelo; Modes, Carl

    Transport networks play a key role across four realms of eukaryotic life: slime molds, fungi, plants, and animals. In addition to the developmental algorithms that build them, many also employ adaptive strategies to respond to stimuli, damage, and other environmental changes. We model these adapting network architectures using a generic dynamical system on weighted graphs and find in simulation that these networks ultimately develop a hierarchical organization of the final weighted architecture accompanied by the formation of a system-spanning backbone. We quantify the hierarchical organization of the networks by developing an algorithm that decomposes the architecture to multiple scales and analyzes how the organization in each scale relates to that of the scale above and below it. The methodologies developed in this work are applicable to a wide range of systems including the slime mold physarum polycephalum, human microvasculature, and force chains in granular media.

  16. Effective Web Design and Core Communication Issues: The Missing Components in Web-Based Distance Education.

    Science.gov (United States)

    Burch, Randall O.

    2001-01-01

    Discussion of Web-based distance education focuses on communication issues. Highlights include Internet communications; components of a Web site, including site architecture, user interface, information delivery method, and mode of feedback; elements of Web design, including conceptual design, sensory design, and reactive design; and a Web…

  17. Methodologies for Crawler Based Web Surveys.

    Science.gov (United States)

    Thelwall, Mike

    2002-01-01

    Describes Web survey methodologies used to study the content of the Web, and discusses search engines and the concept of crawling the Web. Highlights include Web page selection methodologies; obstacles to reliable automatic indexing of Web sites; publicly indexable pages; crawling parameters; and tests for file duplication. (Contains 62…

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

    Institute of Scientific and Technical Information of China (English)

    徐卓揆

    2012-01-01

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

  19. Enterprise Information System Architecture Based on Web 2.0

    Institute of Scientific and Technical Information of China (English)

    YI Xiushuang; WANG Yu; LIU Jinghong; WEN Zhankao

    2006-01-01

    Enterprise information systems with a great use of Web 2.0 technologies will be more open, free, and more efficient.With the contrast between classic Web technologies and Web 2.0 technologies, we represent a sample of enterprise information system based on Web 2.0, and show how the use of Web 2.0 technologies changes the system data exchange model of the enterprise information systems and how it improves the efficiency and effectiveness of information systems.

  20. Security Assessment of Web Based Distributed Applications

    Directory of Open Access Journals (Sweden)

    Catalin BOJA

    2010-01-01

    Full Text Available This paper presents an overview about the evaluation of risks and vulnerabilities in a web based distributed application by emphasizing aspects concerning the process of security assessment with regards to the audit field. In the audit process, an important activity is dedicated to the measurement of the characteristics taken into consideration for evaluation. From this point of view, the quality of the audit process depends on the quality of assessment methods and techniques. By doing a review of the fields involved in the research process, the approach wants to reflect the main concerns that address the web based distributed applications using exploratory research techniques. The results show that many are the aspects which must carefully be worked with, across a distributed system and they can be revealed by doing a depth introspective analyze upon the information flow and internal processes that are part of the system. This paper reveals the limitations of a non-existing unified security risk assessment model that could prevent such risks and vulnerabilities debated. Based on such standardize models, secure web based distributed applications can be easily audited and many vulnerabilities which can appear due to the lack of access to information can be avoided.

  1. Personal Semantic Web Through A Space Based Computing Environment

    CERN Document Server

    Oliver, Ian

    2008-01-01

    The Semantic Web through technologies such to support the canonical representation information and presenting it to users in a method by which its meaning can be understood or at least communi- cated and interpreted by all parties. As the Semantic Web evolves into more of a computing platform rather than an information platform more dynamic structures, interactions and behaviours will evolve leading to systems which localise and personalise this Dynamic Semantic Web.

  2. Towards Web-based representation and processing of health information

    Directory of Open Access Journals (Sweden)

    Oldfield Eddie

    2009-01-01

    Full Text Available Abstract Background There is great concern within health surveillance, on how to grapple with environmental degradation, rapid urbanization, population mobility and growth. The Internet has emerged as an efficient way to share health information, enabling users to access and understand data at their fingertips. Increasingly complex problems in the health field require increasingly sophisticated computer software, distributed computing power, and standardized data sharing. To address this need, Web-based mapping is now emerging as an important tool to enable health practitioners, policy makers, and the public to understand spatial health risks, population health trends and vulnerabilities. Today several web-based health applications generate dynamic maps; however, for people to fully interpret the maps they need data source description and the method used in the data analysis or statistical modeling. For the representation of health information through Web-mapping applications, there still lacks a standard format to accommodate all fixed (such as location and variable (such as age, gender, health outcome, etc indicators in the representation of health information. Furthermore, net-centric computing has not been adequately applied to support flexible health data processing and mapping online. Results The authors of this study designed a HEalth Representation XML (HERXML schema that consists of the semantic (e.g., health activity description, the data sources description, the statistical methodology used for analysis, geometric, and cartographical representations of health data. A case study has been carried on the development of web application and services within the Canadian Geospatial Data Infrastructure (CGDI framework for community health programs of the New Brunswick Lung Association. This study facilitated the online processing, mapping and sharing of health information, with the use of HERXML and Open Geospatial Consortium (OGC services

  3. Future View: Web Navigation based on Learning User's Browsing Strategy

    Science.gov (United States)

    Nagino, Norikatsu; Yamada, Seiji

    In this paper, we propose a Future View system that assists user's usual Web browsing. The Future View will prefetch Web pages based on user's browsing strategies and present them to a user in order to assist Web browsing. To learn user's browsing strategy, the Future View uses two types of learning classifier systems: a content-based classifier system for contents change patterns and an action-based classifier system for user's action patterns. The results of learning is applied to crawling by Web robots, and the gathered Web pages are presented to a user through a Web browser interface. We experimentally show effectiveness of navigation using the Future View.

  4. Performance Analysis of Vision-Based Deep Web Data Extraction for Web Document Clustering

    Directory of Open Access Journals (Sweden)

    M. Lavanya

    2013-01-01

    Full Text Available Web Data Extraction is a critical task by applying various scientific tools and in a broad range of application domains. To extract data from multiple web sites are becoming more obscure, as well to design of web information extraction systems becomes more complex and time-consuming. We also present in this paper so far various risks in web data extraction. Identifying data region from web is a noteworthy crisis for information extraction from the web page. In this paper, performance of vision-based deep web data extraction for web document clustering is presented with experimental result. The proposed approach comprises of two phases: 1 Vision-based web data extraction, where output of phase I is given to second phase and 2 web document clustering. In phase 1, the web page information is segmented into various chunks. From which, surplus noise and duplicate chunks are removed using three parameters, such as hyperlink percentage, noise score and cosine similarity. To identify the relevant chunk, three parameters such as Title word Relevancy, Keyword frequency-based chunk selection, Position features are used and then, a set of keywords are extracted from those main chunks. Finally, the extracted keywords are subjected to web document clustering using Fuzzy c-means clustering (FCM. The experimentation has been performed on two different datasets and the results showed that the proposed VDEC method can achieve stable and good results of about 99.2% and 99.1% precision value in both datasets.

  5. Web based Measurement System for Solar Radiation

    OpenAIRE

    Shachi Awasthi; Dr. P. Mor

    2012-01-01

    We present in this paper, the principles of the measurement system for solar radiation, and our implementation using Web based data logging concept. The photocurrent produced by Silicon PN junction is used as a solar radiation transducer, to make it more viable we have used commercially available solar panels as our transducers. Using a silicon solar cell as sensor, a low cost solar radiometer can be constructed. The photocurrent produced by solar cell is electronically tailored to be measure...

  6. Web Based Cross Language Plagiarism Detection

    OpenAIRE

    Kent, Chow Kok; Salim, Naomie

    2009-01-01

    As the Internet help us cross language and cultural border by providing different types of translation tools, cross language plagiarism, also known as translation plagiarism are bound to arise. Especially among the academic works, such issue will definitely affect the student's works including the quality of their assignments and paper works. In this paper, we propose a new approach in detecting cross language plagiarism. Our web based cross language plagiarism detection system is specially t...

  7. Dynamics in a three species food-web system

    Science.gov (United States)

    Gupta, K.; Gakkhar, S.

    2016-04-01

    In this paper, the dynamics of a three species food-web system is discussed. The food-web comprises of one predator and two logistically growing competing species. The predator species is taking food from one of the competitors with Holling type II functional response. Another competitor is the amensal species for the predator of first species. The system is shown to be positive and bounded. The stability of various axial points, boundary points and interior point has been investigated. The persistence of the system has been studied. Numerical simulation has been performed to show the occurrence of Hopf bifurcation and stable limit cycle about the interior point. The presence of second competitor and its interaction with predator gives more complex dynamics than the simple prey-predator system. The existence of transcritical bifurcation has been established about two axial points. The existence of periodic attractor having period-2 solution has been shown, when amensal coefficient is chosen as bifurcation parameter.

  8. The smartag framework for the dynamic reconstruction of adaptive web content

    OpenAIRE

    Belk, Mario

    2009-01-01

    Mass customization should be more than just configuring a specific component (hardware or software), but should be seen as the co-design of an entire system, including services, experiences and human satisfaction at the individual as well as at the community level. The main objective of this thesis is to implement and evaluate a dynamic Web-based framework, called smarTag, for achieving mass customization on the Web based on human factors. SmarTag is an easy to use framework that enables any ...

  9. Title Based Duplicate Detection of Web Documents

    OpenAIRE

    Kiruthika, M.; Mrs. Smita Dange; Sandhya, P

    2012-01-01

    In recent times, the concept of web crawling has received remarkable significance owing to extreme development of the World Wide Web. Very large amounts of web documents are swarming the web making the search engines less appropriate to the users. Among the vast number of web documents are many duplicates and near duplicates i.e. variants derived from the same original web document due to which additional overheads are created for search engines by which their performance and quality is signi...

  10. Tailoring dynamic ontology-driven web documents by demonstration

    OpenAIRE

    Macías, José A.; Castells, Pablo

    2002-01-01

    Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. J. A. Macías, and P. Castells, "Tailoring dynamic ontology-driven web documents by demonstration", in Sixth International Conf...

  11. The Research on Web Service based Network Management

    OpenAIRE

    Wenli Dong

    2010-01-01

    This paper proposes Web Service based network management. The Web Service based network management system is analyzed. It consists of network management layer, collaborative management implementation layer, and management function layer mainly. The complex management network tasks can be accomplished respectively by more than one Web Service distributed on Internet and the Web Services interchange information based on XML message. The SNMP/XML gateway and the translation between GDMO/ASN.1 an...

  12. Dynamic Web Service Selection Algorithm with Global Optimal QoS Based on Differential Evolution%基于差异演化算法的QoS全局最优动态Web服务选择

    Institute of Scientific and Technical Information of China (English)

    康国胜; 刘建勋; 唐明董; 徐宇

    2011-01-01

    QoS全局最优动态Web服务选择是服务组合中的一个难题.基于差异演化算法,设计一种用于解决该问题的DE-GODSS算法.算法的主要思想是将问题表示为一个带QoS约束的多目标服务组合优化问题,通过理想点的方法将多目标向单目标转化,然后利用差异演化算法的智能优化原理进行算法设计及求解,最终产生一组满足约束条件的优化服务组合流程集.理论分析证明DE-GODSS算法的时间复杂度优于已有的多目标遗传算法,且实验结果表明该算法的收敛速度优于已有的多目标遗传算法.%Dynamic Web service selection with global QoS optimization is a critical issue in Web service composition. In order to solve the problem; based on the algorithm of differential evolution (DE); this paper proposes the DE-GODSS (global optimal of dynamic Web service selection based on DE) algorithm. The basic idea of the algorithm is to transform the original Web service selection problem into a multi-objective service composition optimization with global QoS constraints; which is further transformed into a single-object by using the method of ideal point. Then; the theory of intelligent optimization of DE is exploited to produce a set of optimal services composition process with QoS constraints. Theoretical analysis and experimental results indicate the feasibility and efficiency of this algorithm; and the time complexity and convergence rate of our algorithm are much better than that of the multi-objective genetic algorithm used in prior work.

  13. A Keyword Extraction Based Model for Web Advertisement

    Science.gov (United States)

    Zhou, Ning; Wu, Jiaxin; Zhang, Shaolong

    In this paper, a keyword extraction based model is proposed to deal with web advertisement. In our model, we take web advertisement as an information retrieval problem. Web page and advertisement are firstly represented with a simple data structure which will be the source file for keyword extraction based on x 2-measure for single document. Later we get two vectors to make a retrieval process with a specific similarity function. This model is suitable for common cases of web advertisement. It supports the web page selection in view of advertisement as well as the advertisement selection for specific web page.

  14. On HTML and XML based web design and implementation techniques

    International Nuclear Information System (INIS)

    Web implementation is truly a multidisciplinary field with influences from programming, choosing of scripting languages, graphic design, user interface design, and database design. The challenge of a Web designer/implementer is his ability to create an attractive and informative Web. To work with the universal framework and link diagrams from the design process as well as the Web specifications and domain information, it is essential to create Hypertext Markup Language (HTML) or other software and multimedia to accomplish the Web's objective. In this article we will discuss Web design standards and the techniques involved in Web implementation based on HTML and Extensible Markup Language (XML). We will also discuss the advantages and disadvantages of HTML over its successor XML in designing and implementing a Web. We have developed two Web pages, one utilizing the features of HTML and the other based on the features of XML to carry out the present investigation. (author)

  15. A Web-Based Airborne Remote Sensing Telemetry Server Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A Web-based Airborne Remote Sensing Telemetry Server (WARSTS) is proposed to integrate UAV telemetry and web-technology into an innovative communication, command,...

  16. Web-Based Programs Assess Cognitive Fitness

    Science.gov (United States)

    2009-01-01

    The National Space Biomedical Research Institute, based in Houston and funded by NASA, began funding research for Harvard University researchers to design Palm software to help astronauts monitor and assess their cognitive functioning. The MiniCog Rapid Assessment Battery (MRAB) was licensed by the Criteria Corporation in Los Angeles and adapted for Web-based employment testing. The test battery assesses nine different cognitive functions and can gauge the effect of stress-related deficits, such as fatigue, on various tasks. The MRAB can be used not only for pre-employment testing but also for repeat administrations to measure day-to-day job readiness in professions where alertness is critical.

  17. Web-based pre-Analysis Tools

    CERN Document Server

    Moskalets, Tetiana

    2014-01-01

    The project consists in the initial development of a web based and cloud computing services to allow students and researches to perform fast and very useful cut-based pre-analysis on a browser, using real data and official Monte-Carlo simulations (MC). Several tools are considered: ROOT files filter, JavaScript Multivariable Cross-Filter, JavaScript ROOT browser and JavaScript Scatter-Matrix Libraries. Preliminary but satisfactory results have been deployed online for test and future upgrades.

  18. A simple method for serving Web hypermaps with dynamic database drill-down

    Directory of Open Access Journals (Sweden)

    Carson Ewart R

    2002-08-01

    Full Text Available Abstract Background HealthCyberMap http://healthcybermap.semanticweb.org aims at mapping parts of health information cyberspace in novel ways to deliver a semantically superior user experience. This is achieved through "intelligent" categorisation and interactive hypermedia visualisation of health resources using metadata, clinical codes and GIS. HealthCyberMap is an ArcView 3.1 project. WebView, the Internet extension to ArcView, publishes HealthCyberMap ArcView Views as Web client-side imagemaps. The basic WebView set-up does not support any GIS database connection, and published Web maps become disconnected from the original project. A dedicated Internet map server would be the best way to serve HealthCyberMap database-driven interactive Web maps, but is an expensive and complex solution to acquire, run and maintain. This paper describes HealthCyberMap simple, low-cost method for "patching" WebView to serve hypermaps with dynamic database drill-down functionality on the Web. Results The proposed solution is currently used for publishing HealthCyberMap GIS-generated navigational information maps on the Web while maintaining their links with the underlying resource metadata base. Conclusion The authors believe their map serving approach as adopted in HealthCyberMap has been very successful, especially in cases when only map attribute data change without a corresponding effect on map appearance. It should be also possible to use the same solution to publish other interactive GIS-driven maps on the Web, e.g., maps of real world health problems.

  19. Dynamic Profit Optimization of Composite Web Services with SLAs

    NARCIS (Netherlands)

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

    2011-01-01

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

  20. Web-based pathology practice examination usage

    OpenAIRE

    Klatt, Edward C.

    2014-01-01

    Context: General and subject specific practice examinations for students in health sciences studying pathology were placed onto a free public internet web site entitled web path and were accessed four clicks from the home web site menu. Subjects and Methods: Multiple choice questions were coded into. html files with JavaScript functions for web browser viewing in a timed format. A Perl programming language script with common gateway interface for web page forms scored examinations and placed ...

  1. Computer-based and web-based radiation safety training

    Energy Technology Data Exchange (ETDEWEB)

    Owen, C., LLNL

    1998-03-01

    The traditional approach to delivering radiation safety training has been to provide a stand-up lecture of the topic, with the possible aid of video, and to repeat the same material periodically. New approaches to meeting training requirements are needed to address the advent of flexible work hours and telecommuting, and to better accommodate individuals learning at their own pace. Computer- based and web-based radiation safety training can provide this alternative. Computer-based and web- based training is an interactive form of learning that the student controls, resulting in enhanced and focused learning at a time most often chosen by the student.

  2. Traffic-based feedback on the web.

    Science.gov (United States)

    Aizen, Jonathan; Huttenlocher, Daniel; Kleinberg, Jon; Novak, Antal

    2004-04-01

    Usage data at a high-traffic web site can expose information about external events and surges in popularity that may not be accessible solely from analyses of content and link structure. We consider sites that are organized around a set of items available for purchase or download, consider, for example, an e-commerce site or collection of online research papers, and we study a simple indicator of collective user interest in an item, the batting average, defined as the fraction of visits to an item's description that result in an acquisition of that item. We develop a stochastic model for identifying points in time at which an item's batting average experiences significant change. In experiments with usage data from the Internet Archive, we find that such changes often occur in an abrupt, discrete fashion, and that these changes can be closely aligned with events such as the highlighting of an item on the site or the appearance of a link from an active external referrer. In this way, analyzing the dynamics of item popularity at an active web site can help characterize the impact of a range of events taking place both on and off the site. PMID:14709676

  3. Binary Particle Swarm Optimization based Biclustering of Web usage Data

    CERN Document Server

    Bagyamani, R Rathipriya K Thangavel J

    2011-01-01

    Web mining is the nontrivial process to discover valid, novel, potentially useful knowledge from web data using the data mining techniques or methods. It may give information that is useful for improving the services offered by web portals and information access and retrieval tools. With the rapid development of biclustering, more researchers have applied the biclustering technique to different fields in recent years. When biclustering approach is applied to the web usage data it automatically captures the hidden browsing patterns from it in the form of biclusters. In this work, swarm intelligent technique is combined with biclustering approach to propose an algorithm called Binary Particle Swarm Optimization (BPSO) based Biclustering for Web Usage Data. The main objective of this algorithm is to retrieve the global optimal bicluster from the web usage data. These biclusters contain relationships between web users and web pages which are useful for the E-Commerce applications like web advertising and marketin...

  4. Web service based system for generating input data sets

    International Nuclear Information System (INIS)

    This article deals with a three-layer architectural model of a distributed information system based on Web services, which will be used for automatic generation of sets of input data. The information system will be constructed of a client layer, a service layer and of a data layer. The web services as a tool of developing distributed software systems will be presented briefly. A web service and the implementation of its web methods will be described. A way to use the developed web methods in real application will be proposed. Keywords: web services

  5. Ontology Based Navigation Pattern Mining For Efficient Web Usage

    Directory of Open Access Journals (Sweden)

    Jothi Venkateswaran C.

    2015-02-01

    Full Text Available Users of the web have their own areas of interest. Given the tremendous growth of the web, it is very difficult to redirect the users to their page of interest. Web usage mining techniques can be applied to study the users navigational behaviours based on their previous visit data. These user navigational patterns can be extracted and used for web personalization or web site reorganization recommendations. Web usage mining techniques do not use the semantic knowledge of the web site for such navigational pattern discovery. But, if ontology is applied along with web usage techniques, it can improve the quality of the detected patterns. This research work aims to design a framework that integrates semantic knowledge with web usage mining process that generates the refined website ontology that recommends personalization of web. As the web pages are seen as ontology individuals, the user navigational behaviours over a certain period are considered as the user expected ontology refinement. The user profiles and the web site ontology are compared and the variation between the two is proposed as the new refined web site ontology. The web site ontology has been semi-automatically built and evolves through the adaptation procedure. The result of implementation of this recommendation system indicates that integrating semantic information and page access patterns yield more accurate recommendations.

  6. Web-based Interface in Public Cluster

    CERN Document Server

    Akbar, Z

    2007-01-01

    A web-based interface dedicated for cluster computer which is publicly accessible for free is introduced. The interface plays an important role to enable secure public access, while providing user-friendly computational environment for end-users and easy maintainance for administrators as well. The whole architecture which integrates both aspects of hardware and software is briefly explained. It is argued that the public cluster is globally a unique approach, and could be a new kind of e-learning system especially for parallel programming communities.

  7. SWSCF: A Semantic-based Web Service Composition Framework

    Directory of Open Access Journals (Sweden)

    Jianqiang Hu

    2009-06-01

    Full Text Available Web service composition is gaining a considerable momentum as an approach to the effective integration of distributed, heterogeneous, and autonomous application. Current composed service processes are mostly generated in the syntactic level and in a manual way. The limitation of the approach is that it does not allow business to dynamic change partners and services. In order to avoid this disadvantage, it is critical to map complex business from abstract process to executable flows according to application domain semantics and dynamic business requirements. In this paper, we first present a semantic-based Web service composition framework called SWSCF based on both semantic process recommendation and semantic matchmaking. Then, we analyze some key technologies including: (1 Introducing hierarchical activity mechanism for dynamic decomposition of business requirements to find a suitable semantic process template; (2 Searching and selecting service chain to match a semantic activity template which is used to specify an abstract activity; (3 Devising heterogeneous message transforming mechanism to eliminate the incompatible message types during generating data flow of an executable process. Furthermore, by comparison with some service composition frameworks, we prove SWSCF to be more flexible and effective.

  8. On the Nonlinear Evolution of Cosmic Web: Lagrangian Dynamics Revisited

    CERN Document Server

    Wang, Xin

    2014-01-01

    We investigate the nonlinear evolution of cosmic morphologies of the large-scale structure by examining the Lagrangian dynamics of various tensors of a cosmic fluid element, including the velocity gradient tensor, the Hessian matrix of the gravitational potential as well as the deformation tensor. Instead of the eigenvalue representation, the first two tensors, which associate with the "kinematic" and "dynamical" cosmic web classification algorithm respectively, are studied in a more convenient parameter space. These parameters are defined as the rotational invariant coefficients of the characteristic equation of the tensor. In the nonlinear local model (NLM) where the magnetic part of Weyl tensor vanishes, these invariants are fully capable of characterizing the dynamics. Unlike the Zeldovich approximation (ZA), where various morphologies do not change before approaching a one-dimensional singularity, the sheets in NLM are unstable for both overdense and underdense perturbations. While it has long been known...

  9. Design and Implementation of A Dynamic Content Cache Module for Web Server

    Institute of Scientific and Technical Information of China (English)

    LIU Dan; GUO Cheng-cheng; ZHANG Li

    2004-01-01

    Web offers a very convenient way to access remote information resources, an important measurement of evaluating Web services quality is how long it takes to search and get information.By caching the Web server's dynamic content, it can avoid repeated queries for database and reduce the access frequency of original resources, thus to improve the speed of server's response.This paper describes the concept, advantages, principles and concrete realization procedure of a dynamic content cache module for Web server.

  10. Web based Measurement System for Solar Radiation

    Directory of Open Access Journals (Sweden)

    Shachi Awasthi

    2012-06-01

    Full Text Available We present in this paper, the principles of the measurement system for solar radiation, and our implementation using Web based data logging concept. The photocurrent produced by Silicon PN junction is used as a solar radiation transducer, to make it more viable we have used commercially available solar panels as our transducers. Using a silicon solar cell as sensor, a low cost solar radiometer can be constructed. The photocurrent produced by solar cell is electronically tailored to be measured and stored by our web based data acquisition and monitoring system. Measurement using real solar cell array gives a good measure of actual producible energy by solar arrays. Our portable instrument can be used in remote sites and substitutes the solar monitor and integrator, Current data of solar radiation can be monitored using Ethernet interface available in all PC, Laptops. We store the data into a secure digital card which can be retrieved to plot and analyse the data. We have developed system hardware and software based on ATmega32 AVR Microcontrollers and ENC28J60 Ethernet PHY and MAC network interface chip by Microchip. So the global irradiance data are obtained after correction using the instantaneous measurement of ambient temperature which allows us to calculate the junction temperature and consequently improve the precision of measurement of our data acquisition system.

  11. Web based Measurement System for Solar Radiation

    Directory of Open Access Journals (Sweden)

    Shachi Awasthi

    2012-06-01

    Full Text Available We present in this paper, the principles of themeasurement system for solar radiation, and ourimplementation using Web based data loggingconcept.The photocurrent produced by Silicon PNjunction is used as a solar radiation transducer, tomake it more viable we have used commerciallyavailable solar panels as our transducers. Using asilicon solar cell as sensor, a low cost solarradiometer can be constructed. The photocurrentproduced by solar cell is electronically tailored to bemeasured and stored by our web based dataacquisition and monitoring system. Measurementusing real solar cell array gives a good measure ofactual producible energy by solar arrays. Ourportable instrument can be used in remote sites andsubstitutes the solar monitor and integrator,Current data of solar radiation can be monitoredusing Ethernet interface available in all PC,Laptops. We store the data into a secure digital cardwhich can be retrieved to plot and analyse the data.We have developed system hardware andsoftware based on ATmega32 AVR Microcontrollersand ENC28J60 Ethernet PHY and MAC networkinterface chip by Microchip.So the global irradiance data are obtained aftercorrection using the instantaneous measurement ofambient temperature which allows us to calculatethe junction temperature and consequently improvethe precision of measurement of our dataacquisition system

  12. Fast Web-Based Data Transmission

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Since web-based GIS processes large-size spatial geographic information on internet, we should try to improve the efficiency of spatial data query processing and transmission. This paper presents two efficient methods for this purpose: division-transmission and progressive-transmission methods. In division-transmission method, a map can be divided into several parts, called “tiles”, and only tiles can be transmitted at the request of a client. In progressive-transmission method, a map can be split into several phase views based on the significance of vertices, and a server produces a target object and then transmits it progressively when this spatial object is requested from a client. In order to achieve these methods, the algorithms, “tile division”, “priority-order estimation” and the strategies for data transmission are proposed in this paper, respectively. Compared with such traditional methods as “map total transmission” and “layer transmission”, the web-based GIS data transmission, proposed in this paper, is advantageous in the increase of the data transmission efficiency by a great margin.

  13. Food Enterprise Web Design Based on User Experience

    Directory of Open Access Journals (Sweden)

    Fei Wang

    2015-09-01

    Full Text Available Excellent auxiliary food enterprise web design conveyed good visual transmission effect through user experience. This study was based on the food enterprise managers and customers as the main operating object to get the performance of the web page creation, web page design not only focused on the function and work efficiency, the most important thing was that the user experience in the process of web page interaction.

  14. Food Enterprise Web Design Based on User Experience

    OpenAIRE

    Fei Wang

    2015-01-01

    Excellent auxiliary food enterprise web design conveyed good visual transmission effect through user experience. This study was based on the food enterprise managers and customers as the main operating object to get the performance of the web page creation, web page design not only focused on the function and work efficiency, the most important thing was that the user experience in the process of web page interaction.

  15. Advances in personalized web-based education

    CERN Document Server

    Chrysafiadi, Konstantina

    2015-01-01

    This book aims to provide important information about adaptivity in computer-based and/or web-based educational systems. In order to make the student modeling process clear, a literature review concerning student modeling techniques and approaches during the past decade is presented in a special chapter. A novel student modeling approach including fuzzy logic techniques is presented. Fuzzy logic is used to automatically model the learning or forgetting process of a student. The presented novel student model is responsible for tracking cognitive state transitions of learners with respect to their progress or non-progress. It maximizes the effectiveness of learning and contributes, significantly, to the adaptation of the learning process to the learning pace of each individual learner. Therefore the book provides important information to researchers, educators and software developers of computer-based educational software ranging from e-learning and mobile learning systems to educational games including stand a...

  16. Web-based Projects Evaluation Management System

    Directory of Open Access Journals (Sweden)

    S. Al-Zoubi

    2008-01-01

    Full Text Available This project designs a Web-based evaluation management system for the College of Arts and Sciences (CAS. Problem statement: The Msc students in College of Arts and Sciences (CAS in applied sciences had to take their final project as a project paper in order to fulfill the requirements of their programs and be able to graduate. The final project was evaluated in two parts; first part is representing 40% of the total mark and evaluated by evaluators. Second part was representing 60% of the total mark and evaluated by the student's supervisor. These evaluation were done manually. Both the evaluators and supervisors had to fill in the evaluation forms manually and submit them to the office. Approach: The design research methodology or sometimes called "improvement research" contained the major steps: Awareness the problem, suggestion, development, evaluation and conclusion. Results: Both evaluators and supervisors can fill in the evaluation forms through the Internet. Bring the advantage of saving time and resources over traditional paper and pencil scan sheet method. For enhancing the performance of current final project evaluation process in College of Arts and Sciences (CAS this study proposed a web based evaluation management system to replace the current paper forms used by the evaluators and supervisors. Conclusion: Implementing this system will enable the evaluation results to be entered, presume and retrieved anytime anywhere.

  17. Formative Evaluations of a Web-Based Masters Program: Insights for Web-Based Course Developers.

    Science.gov (United States)

    Shih, Ching-Chun; Howard, Marvin; Thompson, Ann D.

    The purpose of this paper is to report on the various formative evaluation activities that have been conducted for the Masters of Science in Agronomy Distance Education Program at Iowa State University and to provide useful recommendations for educators involved in World Wide Web-based course development. It was found that those faculty members…

  18. Elearning Systems Based on the Semantic Web

    Directory of Open Access Journals (Sweden)

    George Nicola Sammour

    2006-06-01

    Full Text Available ELearning has been identified as a strategic resource that can be utilized as an increasing variety of venues such as homes, workplaces, and traditional institutions of learning, education, and training. ELearning systems are becoming technologically sophisticated and complicated, with regard to training management or course management. Their use does not always match well with traditional modes of teaching and learning and much care needs to be taken when considering the use of ELearning in educational institutions. The use of semantic web in eLearning has been explored with regard to two application areas: 1 software that supports teachers in performing their tasks in flexible online educational settings, and 2 software that interpret the structure of distributed, self organized, and self-directed ELearning and web-based learning. The resulting system will be used by learners to perform the tasks they are asked to do more effectively in the context of gaining knowledge out of the material presented by teachers. These two application areas and related tasks require a semantic representation of educational entities and pedagogical material, specifically the structure and the techniques of the teaching-learning process. In most eLearning systems users are able to manage and reuse learning contents according to their needs without any access problems. However the quality of learning is not guaranteed. This paper emphasizes the integration of the semantic web technologies with Elearning systems, taking into consideration the standards and reusable Learning Objects LO. The advantage to improve the descriptions of content, context and structure of the learning materials and the benefits of providing access to the learning materials are also presented.

  19. Similarity Measurement of Web Sessions Based on Sequence Alignment

    Institute of Scientific and Technical Information of China (English)

    LI Chaofeng; LU Yansheng

    2007-01-01

    The task of clustering Web sessions is to group Web sessions based on similarity and consists of maximizing the intra-group similarity while minimizing the inter-group similarity.The first and foremost question needed to be considered in clustering Web sessions is how to measure the similarity between Web sessions. However, there are many shortcomings in traditional measurements. This paper introduces a new method for measuring similarities between Web pages that takes into account not only the URL but also the viewing time of the visited Web page. Then we give a new method to measure the similarity of Web sessions using sequence alignment and the similarity of Web page access in detail.Experiments have proved that our method is valid and efficient.

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

    Science.gov (United States)

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

    2012-04-01

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

  1. A Web-Based E-Learning System Using Semantic Web Framework

    Directory of Open Access Journals (Sweden)

    Fayed F.M. Ghaleb

    2006-01-01

    Full Text Available E-learning is being increasing viewed as an important activity in the field of distance and continuing education. Web-based courses offer obvious advantages for learners by making access to educational resource very fast, just-in-time and relevant, at any time or place. In this study, based on our previous work, we present a framework for our web-based e-learning system using the Semantic Web technology. In addition we present an approach for implementing a Semantic Web-based e-learning system, which focus on the RDF data model, OWL ontology language and RAP for parsing RDF documents. Also the use of RAP – a Semantic Web toolkit for developing our application is discussed in more details.

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

    OpenAIRE

    Xi Zhai; Peng Yue; Mingda Zhang

    2016-01-01

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

  3. Web Services-Based Test Report Generation

    Institute of Scientific and Technical Information of China (English)

    LUO Ling; BAI Xiaoying

    2005-01-01

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

  4. Web-based tribology design repository system

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Tribology design is one of the most important parts of mechanical product design as thestrength design. Unfortunately, because tribology design knowledge is often m ulti-disciplinary,complicated and piecemeal, it is therefore difficult for a mechanical designer to capture the neededtribology design knowledge. The concept of tribology design repository is proposed in this paper totry to address this problem. This paper presents an object-oriented knowledge representation lan-guage based on the modeling of tribology design component and it makes the complicated tribol-ogy knowledge represented has such advantages as inheritance, encapsulation, and consistency.A web-based triblogy design repository is then established and it enables the edition, retrieve,sharing and reuse of corporate tribology design knowledge in the repository from the Internet.

  5. WEB MINING BASED FRAMEWORK FOR ONTOLOGY LEARNING

    Directory of Open Access Journals (Sweden)

    C.Ramesh

    2015-07-01

    Full Text Available Today, the notion of Semantic Web has emerged as a prominent solution to the problem of organizing the immense information provided by World Wide Web, and its focus on supporting a better co-operation between humans and machines is noteworthy. Ontology forms the major component of Semantic Web in its realization. However, manual method of ontology construction is time-consuming, costly, error-prone and inflexible to change and in addition, it requires a complete participation of knowledge engineer or domain expert. To address this issue, researchers hoped that a semi-automatic or automatic process would result in faster and better ontology construction and enrichment. Ontology learning has become recently a major area of research, whose goal is to facilitate construction of ontologies, which reduces the effort in developing ontology for a new domain. However, there are few research studies that attempt to construct ontology from semi-structured Web pages. In this paper, we present a complete framework for ontology learning that facilitates the semi-automation of constructing and enriching web site ontology from semi structured Web pages. The proposed framework employs Web Content Mining and Web Usage mining in extracting conceptual relationship from Web. The main idea behind this concept was to incorporate the web author's ideas as well as web users’ intentions in the ontology development and its evolution.

  6. APFEL Web a web-based application for the graphical visualization of parton distribution functions

    CERN Document Server

    Carrazza, Stefano; Palazzo, Daniele; Rojo, Juan

    2015-01-01

    We present APFEL Web, a web-based application designed to provide a flexible user-friendly tool for the graphical visualization of parton distribution functions (PDFs). In this note we describe the technical design of the APFEL Web application, motivating the choices and the framework used for the development of this project. We document the basic usage of APFEL Web and show how it can be used to provide useful input for a variety of collider phenomenological studies. Finally we provide some examples showing the output generated by the application.

  7. Web-Based Tools in Education

    Directory of Open Access Journals (Sweden)

    Lupasc Adrian

    2016-07-01

    Full Text Available Technology is advancing at a rapid pace, and what we knew a year ago is likely to no longer apply today. With it, the technology brings new ways of transmitting information, machining and processing, storage and socializing. The continuous development of information technologies contributes more than ever to the increase of access to information for any field of activity, including education. For this reason, education must help young people (pupils and students to collect and select from the sheer volume of information available, to access them and learn how to use them. Therefore, education must constantly adapt to social change; it must pass on the achievements and richness of human experience. At the same time, technology supports didactic activity because it leads learning beyond the classroom, involving all actors in the school community and prepares young people for their profession. Moreover, web tools available for education can yield added benefits, which is why, especially at higher levels of the education system, their integration starts being more obvious and the results are soon to be seen. Moreover, information technologies produce changes in the classic way of learning, thus suffering rapid and profound transformations. In addition, current information technologies offer many types of applications, representing the argument for a new system of providing education and for building knowledge. In this regard, the paper aims to highlight the impact and benefits of current information technologies, particularly web-based, on the educational process.

  8. Dynamic Duo: The Web Developer and the Public Services Librarian

    Directory of Open Access Journals (Sweden)

    Eric Frierson

    2012-07-01

    Full Text Available When I undertook my first library website redesign a few years ago, I stumbled upon an ongoing culture clash in web-based industries between the developer and the designer. Developers are programmers – they have coding skills and speak languages like PHP, jQuery, and AJAX. For them, Cake isn’t something you eat – it’s a development [...

  9. Mining learners’ behavior in accessing web-based interface

    OpenAIRE

    Lee, MW; Chen, SY; Liu, X.

    2007-01-01

    Web-based technology has already been adopted as a tool to support teaching and learning in higher education. One criterion affecting the usability of such a technology is the design of web-based interface (WBI) within web-based learning programs. How different users access the WBIs has been investigated by several studies, which mainly analyze the collected data using statistical methods. In this paper, we propose to analyze users’ learning behavior using Data Mining (DM) techniques. Finding...

  10. Web-Based Training Applications in Safeguards and Security

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, R.L.

    1999-05-21

    The U.S. Department of Energy (DOE) requires all employees who hold a security clearance and have access to classified information and/or special nuclear material to be trained in the area of Safeguards and Security. Since the advent of the World Wide Web, personnel who are responsible for training have capitalized on this communication medium to develop and deliver Web-based training. Unlike traditional computer based training where the student was required to find a workstation where the training program resided, one of Web-based training strongest advantage is that the training can be delivered right to the workers desk top computer. This paper will address reasons for the driving forces behind the utilization of Web-based training at the Laboratory with a brief explanation of the different types of training conducted. Also discussed briefly is the different types of distance learning used in conjunction with Web-based training. The implementation strategy will be addressed and how the Laboratory utilized a Web-Based Standards Committee to develop standards for Web-based training applications. Web-based problems resulting from little or no communication between training personnel across the Laboratory will be touched on and how this was solved. Also discussed is the development of a ''Virtual Training Center'' where personnel can shop on-line for their training needs. Web-based training programs within the Safeguards and Security arena will be briefly discussed. Specifically, Web-based training in the area of Materials Control and Accountability will be explored. A Web-based example of what a student would experience during a training session is also discussed. A short closing statement of what the future of Web-based Training holds in the future is offered.

  11. The Research on Web Service based Network Management

    Directory of Open Access Journals (Sweden)

    Wenli Dong

    2010-07-01

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

  12. Web-based Cooperative Learning in College Chemistry Teaching

    Directory of Open Access Journals (Sweden)

    Bin Jiang

    2014-03-01

    Full Text Available With the coming of information era, information process depend on internet and multi-media technology in education becomes the new approach of present teaching model reform. Web-based cooperative learning is becoming a popular learning approach with the rapid development of web technology. The paper aims to how to carry out the teaching strategy of web-based cooperative learning and applied in the foundation chemistry teaching.It was shown that with the support of modern web-based teaching environment, students' cooperative learning capacity and overall competence can be better improved and the problems of interaction in large foundation chemistry classes can be solved. Web-based cooperative learning can improve learning performance of students, what's more Web-based cooperative learning provides students with cooperative skills, communication skills, creativity, critical thinking skills and skills in information technology application.

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

    Science.gov (United States)

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

    2012-07-01

    One of the most important issues in e-healthcare information systems is to optimize the medical data quality extracted from distributed and heterogeneous environments, which can extremely improve diagnostic and treatment decision making. This paper proposes a multiagent web service framework based on service-oriented architecture for the optimization of medical data quality in the e-healthcare information system. Based on the design of the multiagent web service framework, an evolutionary algorithm (EA) for the dynamic optimization of the medical data quality is proposed. The framework consists of two main components; first, an EA will be used to dynamically optimize the composition of medical processes into optimal task sequence according to specific quality attributes. Second, a multiagent framework will be proposed to discover, monitor, and report any inconstancy between the optimized task sequence and the actual medical records. To demonstrate the proposed framework, experimental results for a breast cancer case study are provided. Furthermore, to show the unique performance of our algorithm, a comparison with other works in the literature review will be presented. PMID:22614723

  14. Effect of Incentives on Web-Based Surveys

    Institute of Scientific and Technical Information of China (English)

    SU Jie; SHAO Peiji; FANG Jiaming

    2008-01-01

    Investigators seek ways to effectively raise the response rate of surveys. Incentives have a great influence on response rate, retention rate, and response quality in traditional surveys. The purpose of this paper is to investigate what kinds of incentives are effective in web-based surveys. This study summarizes the research framework of previous studies on the effect of incentives in web-based surveys to show that material incentives have a significant effect on web-based surveys with prepaid incentives having a moderate influence on raising the response rate. Contingent incentives significantly reduce the response rate. These findings provide guidance for web-based investigations.

  15. Web Based Distributed Coastal Image Analysis System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This project develops Web based distributed image analysis system processing the Moderate Resolution Imaging Spectroradiometer (MODIS) data to provide decision...

  16. A Web-based Virtual Reality Simulation of Mounting Machine

    Directory of Open Access Journals (Sweden)

    Lan Li

    2014-02-01

    Full Text Available Mounting machine is the most critical equipment in the SMT (Surface Mounted Technology, the production efficiency of which affects the entire assembly line's productivity dramatically, and can be the bottleneck of the assembly line if poorly designed. In order to enhance the VM(Virtual Manufacturing of mounting simulation for PCB(Printed Circuit Board circuit modular, the virtual reality simulation of web-based mounting machine is written in Java Applet as controlling core and VRML(Virtual Reality Modeling Language scenes as 3D displaying platform. This system is data driven and manufacturing oriented. System can dynamically generate 3D static mounting scene and interactively observe the dynamic process from all angles. Simulation results prove that the system has a high fidelity which brings good practical significance to manufacturing analysis and optimization for process design. It offers a new thought for establishing a practical PCB circuit modular VM system in unit production.

  17. P2PRPIPS: A P2P and Reverse Proxy Based Web Intrusion Protection System

    Directory of Open Access Journals (Sweden)

    Qian He

    2013-03-01

    Full Text Available In order to protect web sites with various program languages and high throughput efficiently, a web Intrusion Protection System (IPS based on P2P and reverse proxy architecture was designed and implemented. The P2P based web intrusion protection system has multi web firewall nodes and nodes with same program cooperate with each other under P2P architecture. Some nodes work as net flow allocator and some work as detector and they can convert to each other according to the requirements dynamically. The WAF program has the characteristics of session keeping and load balancing and it can detect messages by using expert library and many plug-in components. The technology of reverse proxy is used for response the web request. Experiments show that the system can effectively prevent attacks form application layer. It is proved more efficient and stable than single node.

  18. Web Based Video Educational Resources for Surgeons

    Directory of Open Access Journals (Sweden)

    Petre Vlah-Horea BOŢIANU

    2015-12-01

    Full Text Available During the last years, video files showing different surgical procedures have become extremely available and popular on the internet. They are available on both free and unrestricted sites, as well as on dedicated sites which control the medical quality of the information. Honest presentation and a minimal video-editing to include information about the procedure are mandatory to achieve a product with a true educational value. The integration of the web-based video educational resources in the continuing medical information system seems to be limited and the true educational impact very difficult to assess. A review of the available literature dedicated on this subject shows that the main challenge is related to the human factor and not to the available technology.

  19. Rweb:Web-based Statistical Analysis

    Directory of Open Access Journals (Sweden)

    Jeff Banfield

    1999-03-01

    Full Text Available Rweb is a freely accessible statistical analysis environment that is delivered through the World Wide Web (WWW. It is based on R, a well known statistical analysis package. The only requirement to run the basic Rweb interface is a WWW browser that supports forms. If you want graphical output you must, of course, have a browser that supports graphics. The interface provides access to WWW accessible data sets, so you may run Rweb on your own data. Rweb can provide a four window statistical computing environment (code input, text output, graphical output, and error information through browsers that support Javascript. There is also a set of point and click modules under development for use in introductory statistics courses.

  20. Web Based Cross Language Plagiarism Detection

    CERN Document Server

    Kent, Chow Kok

    2009-01-01

    As the Internet help us cross language and cultural border by providing different types of translation tools, cross language plagiarism, also known as translation plagiarism are bound to arise. Especially among the academic works, such issue will definitely affect the student's works including the quality of their assignments and paper works. In this paper, we propose a new approach in detecting cross language plagiarism. Our web based cross language plagiarism detection system is specially tuned to detect translation plagiarism by implementing different techniques and tools to assist the detection process. Google Translate API is used as our translation tool and Google Search API, which is used in our information retrieval process. Our system is also integrated with the fingerprint matching technique, which is a widely used plagiarism detection technique. In general, our proposed system is started by translating the input documents from Malay to English, followed by removal of stop words and stemming words, ...

  1. A Web Based Cardiovascular Disease Detection System.

    Science.gov (United States)

    Alshraideh, Hussam; Otoom, Mwaffaq; Al-Araida, Aseel; Bawaneh, Haneen; Bravo, José

    2015-10-01

    Cardiovascular Disease (CVD) is one of the most catastrophic and life threatening health issue nowadays. Early detection of CVD is an important solution to reduce its devastating effects on health. In this paper, an efficient CVD detection algorithm is identified. The algorithm uses patient demographic data as inputs, along with several ECG signal features extracted automatically through signal processing techniques. Cross-validation results show a 98.29 % accuracy for the decision tree classification algorithm. The algorithm has been integrated into a web based system that can be used at anytime by patients to check their heart health status. At one end of the system is the ECG sensor attached to the patient's body, while at the other end is the detection algorithm. Communication between the two ends is done through an Android application. PMID:26293754

  2. Knowledge Base Grid: A Generic Grid Architecture for Semantic Web

    Institute of Scientific and Technical Information of China (English)

    WU ZhaoHui(吴朝晖); CHEN HuaJun(陈华钧); XU JieFeng(徐杰锋)

    2003-01-01

    The emergence of semantic web will result in an enormous amount of knowledge base resources on the web. In this paper, a generic Knowledge Base Grid Architecture (KB-Grid)for building large-scale knowledge systems on the semantic web is presented. KB-Grid suggests a paradigm that emphasizes how to organize, discover, utilize, and manage web knowledge base resources. Four principal components are under development: a semantic browser for retrieving and browsing semantically enriched information, a knowledge server acting as the web container for knowledge, an ontology server for managing web ontologies, and a knowledge base directory server acting as the registry and catalog of KBs. Also a referential model of knowledge service and the mechanisms required for semantic communication within KB-Grid are defined. To verify the design rationale underlying the KB-Grid, an implementation of Traditional Chinese Medicine(TCM) is described.

  3. Towards Greater Learner Control: Web Supported Project-Based Learning

    Science.gov (United States)

    Guthrie, Cameron

    2010-01-01

    Project-based learning has been suggested as an appropriate pedagogy to prepare students in information systems for the realities of the business world. Web-based resources have been used to support such pedagogy with mixed results. The paper argues that the design of web-based learning support to cater to different learning styles may give…

  4. Towards Development of Web-based Assessment System Based on Semantic Web Technology

    Directory of Open Access Journals (Sweden)

    Hosam Farouk El-Sofany

    2011-01-01

    Full Text Available The assessment process in an educational system is an important and primordial part of its success to assure the correct way of knowledge transmission and to ensure that students are working correctly and succeed to acquire the needed knowledge. In this study, we aim to include Semantic Web technologies in the E-learning process, as new components. We use Semantic Web (SW to: 1 support the evaluation of open questions in e-learning courses, 2 support the creation of questions and exams automatically, 3 support the evaluation of exams created by the system. These components should allow for measuring academic performance, providing feedback mechanisms, and improving participative and collaborative ideas. Our goal is to use Semantic Web and Wireless technologies to design and implement the assessment system that allows the students, to take: web-based tutorials, quizzes, free exercises, and exams, to download: course reviews, previous exams and their model answers, to access the system through the Mobile and take quick quizzes and exercises. The system facilitates generation of automatic, balanced, and different exam sheets that contain different types of questions covering the entire curriculum, and display gradually from easiness to difficulty. The system provides the teachers and administrators with several services such as: store different types of questions, generate exams with specific criteria, and upload course assignments, exams, and reviews.

  5. Web Application Comprehension Based on Dependence Analysis

    Institute of Scientific and Technical Information of China (English)

    WU Jun-hua; XU Bao-wen; JIANG Ji-xiang

    2004-01-01

    Many research indicate a lot of money and time are spent on maintaining and modifying program delivered.So the policies to support program comprehension are very important.Program comprehension is a crucial and difficult task.Insufficient design, illogical code structure, short documents will enhance the comprehensive difficulty.Developing Web application is usually a process with quick implementation and delivery.In addition, generally a Web application is coded by combining mark language statements with some embedded applets.Such programming mode affects comprehension of Web applications disadvantageously.This paper proposes a method to improving understanding Web by dependence analysis and slice technology.

  6. Web Crawler Based on Mobile Agent and Java Aglets

    Directory of Open Access Journals (Sweden)

    Md. Abu Kausar

    2013-09-01

    Full Text Available With the huge growth of the Internet, many web pages are available online. Search engines use web crawlers to collect these web pages from World Wide Web for the purpose of storage and indexing. Basically Web Crawler is a program, which finds information from the World Wide Web in a systematic and automated manner. This network load farther will be reduced by using mobile agents.The proposed approach uses mobile agents to crawl the pages. A mobile agent is not bound to the system in which it starts execution. It has the unique ability to transfer itself from one system in a network to another system. The main advantages of web crawler based on Mobile Agents are that the analysis part of the crawling process is done locally rather than remote side. This drastically reduces network load and traffic which can improve the performance and efficiency of the whole crawling process.

  7. Location-Based Botany Guide: A Prototype of Web-Based Tracking and Guiding

    Science.gov (United States)

    Zhou, Rui; Schneider, Gerhard

    Wireless positioning technologies make it possible to keep track of mobile devices, and Web technologies make Web applications highly interactive. The combination of them gives rise to location-based Web applications, which generate and deliver Web content tailored to user locations. Location-based Web applications are able to utilize the enormous resources on the Web and allow users to use different location-based services without installing specific software. The paper presents a prototype of Web-based tracking and guiding - the Location-Based Botany Guide, which is a Web-based multimedia guiding system used in botanical gardens for biology students and visitors. The system adopts a general architecture for Web-based tracking and guiding, which consists of the Location Server, the Content Server, the Botanical Guiding Web Server and the clients. Personalization technology is applied to provide the users with personalized recommendations and presentations.

  8. Re-Service Teachers’ Views On Web-Based 
Classroom Management

    OpenAIRE

    Adnan BOYACI

    2010-01-01

    With the invention of World Wide Web in 1992, delivery of distance education via internet and emergency of web-based classrooms have rapidly gained acceptance as an alternative and supplement to traditional face to face classroom instruction (Alavi, Yoo & Vogel, 1997; Rahm & Reed, 1997), which represents a paradigm shift challenging all traditionally accepted assumptions concerning dynamics of classroom management. Classroom is highly complicated environment with its features of multi...

  9. GALILEE: AN INTERNET WEB BASED DISTANCE LEARNING SUPPORT SYSTEM

    Directory of Open Access Journals (Sweden)

    Arthur Budiman

    1999-01-01

    Full Text Available This paper presents a project of Web-based Distance Learning support system. The system has been built based on the Internet and World Wide Web facility. The system could be accessed with a web browser which is directed to a certain web server address so that students can do learning process just like in the real situation, such as student admissions, taking course materials, syllabus, assignments, students grades, class discussions through web, and doing online quizzes. Students could also join collaboration works by giving opinions, feedback and student produced paper/web which can be shared to the entire learning community. Therefore, it will build a collaborative learning environment where lectures together with students make constructive knowledge databases for entire learning community. This system has been developed based on Active Server Pages (ASP technology from Microsoft which is embedded in a web server. Web pages reside in a web server which is connected to an SQL Database Server. Database server is used to store structured data such as lectures/students personal information, course lists, syllabus and its descriptions, announcement texts from lecturers, commentaries for discussion forum, student's study evaluations, scores for each assignment, quizzes for each course, assignments text from lectures, assignments which are collected by students and students contribution/materials. This system has been maintained by an administrator for maintaining and developing web pages using HTML. The administrator also does ASP scripts programming to convert web pages into active server pages. Lectures and students could contribute some course materials and share their ideas through their web browser. This web-based collaborative learning system gives the students more active role in the information gathering and learning process, making the distance students feel part of a learning community, therefore increasing motivation, comprehension and

  10. Retrieving Deep Web Data Based on Reinforcement Learning%基于强化学习的 Deep Web 数据提取方法

    Institute of Scientific and Technical Information of China (English)

    林治; 王睿

    2015-01-01

    随着 Web 的飞速发展,Deep Web 中蕴藏着海量高质量数据,如何高效地提取这些数据极具挑战。由于 Deep Web 的动态性,其数据经常处于频繁更新的状态,而用户总是希望获得最新鲜的内容。为此,论文在分析 Deep Web 数据变化特性的基础上,建立一个 Deep Web 数据生成模型,然后,提出一种强化学习的 Deep Web 数据提取方法。实验表明,该方法具有较好的数据提取效率,可有效提高 Deep Web 数据集成服务质量。%With the rapid development of the Web ,there are massive high‐quality data in Deep Web .How to efficiently retrieve these data is challenging .Because Deep Web is dynamic ,the data are always in frequently update status ,and users always want to obtain the freshest content .In this paper ,through analyzing the variety characters of Deep Web ,a Deep Web data generation model is established ,and then a Deep Web data retrieval method based on reinforcement learning is proposed . Experimental results show that this method has better data retrieval efficiency ,which can effectively improve the service quality of Deep Web data integration .

  11. 基于强化学习的 Deep Web 数据提取方法%Retrieving Deep Web Data Based on Reinforcement Learning

    Institute of Scientific and Technical Information of China (English)

    林治; 王睿

    2015-01-01

    With the rapid development of the Web ,there are massive high‐quality data in Deep Web .How to efficiently retrieve these data is challenging .Because Deep Web is dynamic ,the data are always in frequently update status ,and users always want to obtain the freshest content .In this paper ,through analyzing the variety characters of Deep Web ,a Deep Web data generation model is established ,and then a Deep Web data retrieval method based on reinforcement learning is proposed . Experimental results show that this method has better data retrieval efficiency ,which can effectively improve the service quality of Deep Web data integration .%随着 Web 的飞速发展,Deep Web 中蕴藏着海量高质量数据,如何高效地提取这些数据极具挑战。由于 Deep Web 的动态性,其数据经常处于频繁更新的状态,而用户总是希望获得最新鲜的内容。为此,论文在分析 Deep Web 数据变化特性的基础上,建立一个 Deep Web 数据生成模型,然后,提出一种强化学习的 Deep Web 数据提取方法。实验表明,该方法具有较好的数据提取效率,可有效提高 Deep Web 数据集成服务质量。

  12. A Web-Based Learning System for Software Test Professionals

    Science.gov (United States)

    Wang, Minhong; Jia, Haiyang; Sugumaran, V.; Ran, Weijia; Liao, Jian

    2011-01-01

    Fierce competition, globalization, and technology innovation have forced software companies to search for new ways to improve competitive advantage. Web-based learning is increasingly being used by software companies as an emergent approach for enhancing the skills of knowledge workers. However, the current practice of Web-based learning is…

  13. Virtual Portfolios for Collaboration in Distributed Web-Based Learning.

    Science.gov (United States)

    Sorensen, Elsebeth Korsgaard; Tolsby, Haakon; Dirckinck-Holmfeld, Lone

    This paper addresses the problems of collaboration in distributed Web-based learning. It reviews, treats and discusses these problems from the learning theoretical perspective of "communities of practice" as presented by Etienne Wenger (1998), with reference to past and future Web-based designs. The paper suggests the concept and design of virtual…

  14. Social Presence in the Web-Based Synchronous Secondary Classroom

    Science.gov (United States)

    Nippard, Eric; Murphy, Elizabeth

    2007-01-01

    The purpose of the study reported on in this paper was to explore how teachers and students manifest social presence in the web-based synchronous secondary classroom (WBSSC). Data were collected using structured and unstructured observations of twelve online recordings of web-based synchronous classes in the province of Newfoundland and Labrador,…

  15. A Personalized Tag-Based Recommendation in Social Web Systems

    DEFF Research Database (Denmark)

    Durao, Frederico; Dolog, Peter

    2009-01-01

    -based recommender system which suggests similar Web pages based on the similarity of their tags from a Web 2.0 tagging application. The proposed approach extends the basic similarity calculus with external factors such as tag popularity, tag representativeness and the affinity between user and tag. In order...

  16. ONTOLOGY BASED WEB PAGE ANNOTATION FOR EFFECTIVE INFORMATION RETRIEVAL

    Directory of Open Access Journals (Sweden)

    S.Kalarani

    2010-11-01

    Full Text Available Today’s World Wide Web has large volume of data – billions of documents. So it is a time consuming process to discover effective knowledge from the input data. With today's keyword approach the amount of time and effort required to find the right information is directly proportional to the amount of information on the web.The web has grown exponentially and people are forced to spend more and more time in search for the information they are looking for. Lack of personalization as well as inability to easily separate commercial from non-commercial searches is among other limitations of today's web search technologies. This paper proposes a prototype relation-based search engine. “OntoLook” which has been designed in a virtual semantic web environment. The architecture has been proposed. The Semantic Web is well recognized as an effective infrastructure to enhance visibility of knowledge on the Web. The core of the Semantic Web is “ontology”, which is used to explicitly represent our conceptualizations. Ontology engineering in the Semantic Web isprimarily supported by languages such as RDF, RDFS and OWL. This paper discusses the requirements of ontology in the context of the Web, compares the above three languages with existing knowledge representation formalisms, and surveys tools for managing and applying ontology. Advantages of using ontology in both knowledge-base-style and database-style applications are demonstrated using one real world applications.

  17. DYNAMIC REQUEST DISPATCHING ALGORITHM FOR WEB SERVER CLUSTER

    Institute of Scientific and Technical Information of China (English)

    Yang Zhenjiang; Zhang Deyun; Sun Qindong; Sun Qing

    2006-01-01

    Distributed architectures support increased load on popular web sites by dispatching client requests transparently among multiple servers in a cluster. Packet Single-Rewriting technology and client address hashing algorithm in ONE-IP technology which can ensure application-session-keep have been analyzed, an improved request dispatching algorithm which is simple, effective and supports dynamic load balance has been proposed. In this algorithm, dispatcher evaluates which server node will process request by applying a hash function to the client IP address and comparing the result with its assigned identifier subset; it adjusts the size of the subset according to the performance and current load of each server, so as to utilize all servers' resource effectively. Simulation shows that the improved algorithm has better performance than the original one.

  18. World-trade web: Topological properties, dynamics, and evolution

    Science.gov (United States)

    Fagiolo, Giorgio; Reyes, Javier; Schiavo, Stefano

    2009-03-01

    This paper studies the statistical properties of the web of import-export relationships among world countries using a weighted-network approach. We analyze how the distributions of the most important network statistics measuring connectivity, assortativity, clustering, and centrality have coevolved over time. We show that all node-statistic distributions and their correlation structure have remained surprisingly stable in the last 20years —and are likely to do so in the future. Conversely, the distribution of (positive) link weights is slowly moving from a log-normal density towards a power law. We also characterize the autoregressive properties of network-statistics dynamics. We find that network-statistics growth rates are well-proxied by fat-tailed densities like the Laplace or the asymmetric exponential power. Finally, we find that all our results are reasonably robust to a few alternative, economically meaningful, weighting schemes.

  19. Stratification-Based Outlier Detection over the Deep Web

    Directory of Open Access Journals (Sweden)

    Xuefeng Xian

    2016-01-01

    Full Text Available For many applications, finding rare instances or outliers can be more interesting than finding common patterns. Existing work in outlier detection never considers the context of deep web. In this paper, we argue that, for many scenarios, it is more meaningful to detect outliers over deep web. In the context of deep web, users must submit queries through a query interface to retrieve corresponding data. Therefore, traditional data mining methods cannot be directly applied. The primary contribution of this paper is to develop a new data mining method for outlier detection over deep web. In our approach, the query space of a deep web data source is stratified based on a pilot sample. Neighborhood sampling and uncertainty sampling are developed in this paper with the goal of improving recall and precision based on stratification. Finally, a careful performance evaluation of our algorithm confirms that our approach can effectively detect outliers in deep web.

  20. Stratification-Based Outlier Detection over the Deep Web.

    Science.gov (United States)

    Xian, Xuefeng; Zhao, Pengpeng; Sheng, Victor S; Fang, Ligang; Gu, Caidong; Yang, Yuanfeng; Cui, Zhiming

    2016-01-01

    For many applications, finding rare instances or outliers can be more interesting than finding common patterns. Existing work in outlier detection never considers the context of deep web. In this paper, we argue that, for many scenarios, it is more meaningful to detect outliers over deep web. In the context of deep web, users must submit queries through a query interface to retrieve corresponding data. Therefore, traditional data mining methods cannot be directly applied. The primary contribution of this paper is to develop a new data mining method for outlier detection over deep web. In our approach, the query space of a deep web data source is stratified based on a pilot sample. Neighborhood sampling and uncertainty sampling are developed in this paper with the goal of improving recall and precision based on stratification. Finally, a careful performance evaluation of our algorithm confirms that our approach can effectively detect outliers in deep web. PMID:27313603

  1. Stratification-Based Outlier Detection over the Deep Web

    Science.gov (United States)

    Xian, Xuefeng; Zhao, Pengpeng; Sheng, Victor S.; Fang, Ligang; Gu, Caidong; Yang, Yuanfeng; Cui, Zhiming

    2016-01-01

    For many applications, finding rare instances or outliers can be more interesting than finding common patterns. Existing work in outlier detection never considers the context of deep web. In this paper, we argue that, for many scenarios, it is more meaningful to detect outliers over deep web. In the context of deep web, users must submit queries through a query interface to retrieve corresponding data. Therefore, traditional data mining methods cannot be directly applied. The primary contribution of this paper is to develop a new data mining method for outlier detection over deep web. In our approach, the query space of a deep web data source is stratified based on a pilot sample. Neighborhood sampling and uncertainty sampling are developed in this paper with the goal of improving recall and precision based on stratification. Finally, a careful performance evaluation of our algorithm confirms that our approach can effectively detect outliers in deep web. PMID:27313603

  2. Stratification-Based Outlier Detection over the Deep Web.

    Science.gov (United States)

    Xian, Xuefeng; Zhao, Pengpeng; Sheng, Victor S; Fang, Ligang; Gu, Caidong; Yang, Yuanfeng; Cui, Zhiming

    2016-01-01

    For many applications, finding rare instances or outliers can be more interesting than finding common patterns. Existing work in outlier detection never considers the context of deep web. In this paper, we argue that, for many scenarios, it is more meaningful to detect outliers over deep web. In the context of deep web, users must submit queries through a query interface to retrieve corresponding data. Therefore, traditional data mining methods cannot be directly applied. The primary contribution of this paper is to develop a new data mining method for outlier detection over deep web. In our approach, the query space of a deep web data source is stratified based on a pilot sample. Neighborhood sampling and uncertainty sampling are developed in this paper with the goal of improving recall and precision based on stratification. Finally, a careful performance evaluation of our algorithm confirms that our approach can effectively detect outliers in deep web.

  3. 基于ASP技术动态网站的设计与实现%Design and Implementation of ASP - based Dynamic Web Site

    Institute of Scientific and Technical Information of China (English)

    孙媛; 赵明茹

    2012-01-01

    随着网络技术的发展,网站建设已成为各个领域应用的一项重要技术,ASP已成为Web应用程序在动态网站制作方面的重要开发技术.简要介绍了动态网站的工作原理、环境配置过程,以ASP技术和数据库技术相结合在网站建设中的应用为实例,直观地展示了ASP在动态网站设计中的优越性.%Website design has become an important technology in all fields along with the development of network technology. Meanwhile, ASP has become important development technology in dynamic websites production. It introduces the working principle of dynamic websites and system configuration process, takes some examples to indicate the practical application of ASP technology and database combined. The results directly show the superiority of ASP in dynamic websites design.

  4. Dynamic modeling of web purchase behavior and e-mailing impact by Petri net

    OpenAIRE

    BALAGUE, Christine; LEE, Janghyuk

    2004-01-01

    In this article, the authors introduce Petri nets to model the dynamics of web site visits and purchase behaviors in the case of wish list systems. They describe web site activities and their transition with probability distributions and model the sequential impact of influential factors through links that better explain web purchase behavior dynamics. The basic model, which analyzes site connections and purchases to explain visit and purchase behavior, performs better than a classical negati...

  5. An interactive Web-based radiation protection course in fluoroscopy

    International Nuclear Information System (INIS)

    The teaching of radiation protection to a large group of physicians, who are separated geographically and have complicated schedules, is a formidable problem. Therefore a Web-based solution is attractive, allowing access to the material at any time and place. In this implementation the didactic material is presented in a Web-based format. Subsequently, students attend a practical demonstration in one of the departments' fluoroscopy rooms. Because of local experience with distance education, WebCT was chosen to present the material. WebCT (Web Course Tools) was developed by the University of British Columbia (UBC) to allow educators, with or without technical expertise, to create a sophisticated Web-base. Authors use a standard Web browser to create courses, and students use their browsers to access course material. WebCT provides a wide variety of tools and features that can be added to a course. Among the most useful tools used in this fluoroscopy course are the glossary, multiple-choice questions for each section, and a final test which is scored by the computer. As with all Web-based material the courses can be viewed in the traditional linear fashion or in any random way through the use of linkages. (author)

  6. Improving the Aircraft Design Process Using Web-Based Modeling and Simulation

    Science.gov (United States)

    Reed, John A.; Follen, Gregory J.; Afjeh, Abdollah A.; Follen, Gregory J. (Technical Monitor)

    2000-01-01

    Designing and developing new aircraft systems is time-consuming and expensive. Computational simulation is a promising means for reducing design cycle times, but requires a flexible software environment capable of integrating advanced multidisciplinary and multifidelity analysis methods, dynamically managing data across heterogeneous computing platforms, and distributing computationally complex tasks. Web-based simulation, with its emphasis on collaborative composition of simulation models, distributed heterogeneous execution, and dynamic multimedia documentation, has the potential to meet these requirements. This paper outlines the current aircraft design process, highlighting its problems and complexities, and presents our vision of an aircraft design process using Web-based modeling and simulation.

  7. 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

    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...... 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......, a development process meta-model for Web based expert systems will be presented. Based on this meta-model, a publicly available Web based expert systemcalled Landfill Operation Management Advisor (LOMA) was developed. In addition, the results of an accessibility evaluation on LOMA – the first ever reported...

  8. Reflecrions on Web-based language teaching

    Institute of Scientific and Technical Information of China (English)

    CHEN Yiping

    2004-01-01

    Web-based education has been enjoying greater popularity because of its undeniable advantages. It has been seen as a panacea by more and more people in educational field, including language teaching. Based on the realization of the great potential brought by the development of technology, some viewpoints about the relationship among technology, teaching and pedagogy are put forward: firstly, technology is a tool, not a strategy; secondly, pedagogical concerns and theory should drive the way technology is used in education, not the other way around; thirdly, what matters more than technology is how the technology is used for learning, and how it is integrated into the daily classroom scheme so that active engagement in acquisition-oriented work take place; and finally, the change of learning environment inevitably calls for parallel changes in teaching and learning procedures. Available technologies can greatly enhance both student-teacher and student-student interaction and can afford students increased opportunities for self directed learning. To be most effective, technology must be used to support well-planned curricular goals and should involve carefully designed activities providing students with meaningful educational experiences.

  9. On Web Services Based Cloud Interoperability

    Directory of Open Access Journals (Sweden)

    Reeta Sony A.L

    2012-09-01

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

  10. WEB BASED SUPPORT FOR CITIZENS’ GROUPS

    Directory of Open Access Journals (Sweden)

    Sayaka MATSUMOTO

    2011-06-01

    Full Text Available In recent years, the using of the information and communication technology is expected in citizens’ groups (NPOs, voluntary organizations. But the usage of the tools that can promote online communications in citizens’ groups has not been accepted widely, compared with enterprises or educational institutions. In this paper, we aim to clarify the current utilization of online communication tools, and discuss how can promote online communication among members of citizens’ group. At first, we analyze some important factors of why those tools are not used widely. Some factors we analyzed are: existing tools have a lot of unnecessary function, and lack of opportunity to obtain skill that is necessary to use the tools. Then based on the analysis results, we propose some actual solutions to promote the use of online communication tools for citizens’ groups. The first one is to provide education course for citizens’ groups, which was verified through a trial education experiment we conducted. The second is to develop easy to use community environment named “e-Citizen square” to provide functions for citizens’ group to easily construct and manage simple Web community sites. The community environment we developed based on the open source contents management system.

  11. Web Based Genetic Algorithm Using Data Mining

    Directory of Open Access Journals (Sweden)

    Ashiqur Rahman

    2016-09-01

    Full Text Available This paper presents an approach for classifying students in order to predict their final grade based on features extracted from logged data in an education web-based system. A combination of multiple classifiers leads to a significant improvement in classification performance. Through weighting the feature vectors using a Genetic Algorithm we can optimize the prediction accuracy and get a marked improvement over raw classification. It further shows that when the number of features is few; feature weighting is works better than just feature selection. Many leading educational institutions are working to establish an online teaching and learning presence. Several systems with different capabilities and approaches have been developed to deliver online education in an academic setting. In particular, Michigan State University (MSU has pioneered some of these systems to provide an infrastructure for online instruction. The research presented here was performed on a part of the latest online educational system developed at MSU, the Learning Online Network with Computer-Assisted Personalized Approach (LON-CAPA

  12. Research on Computer English Teaching based on WEB Network

    Institute of Scientific and Technical Information of China (English)

    Liwen WANG

    2015-01-01

    With the continuous progress of the integration of information technology and English teaching course under the network environment, the traditional teaching mode cannot meet to listening teaching resources requirement, Web listening corpus is the main way to solve the problem. The paper design the small Web corpus for university English listening teaching development based on the introduction of Web corpus, and this corpus has realized to the listening material retrieval, browsing, online listening watch and update functions.

  13. AGENTS AND OWL-S BASED SEMANTIC WEB SERVICE DISCOVERY WITH USER PREFERENCE SUPPORT

    Directory of Open Access Journals (Sweden)

    Rohallah Benaboud

    2013-05-01

    Full Text Available Service-oriented computing (SOC is an interdisciplinary paradigm that revolutionizes the very fabric ofdistributed software development applications that adopt service-oriented architectures (SOA can evolveduring their lifespan and adapt to changing or unpredictable environments more easily. SOA is builtaround the concept of Web Services. Although the Web services constitute a revolution in Word Wide Web,they are always regarded as non-autonomous entities and can be exploited only after their discovery. Withthe help of software agents, Web services are becoming more efficient and more dynamic.The topic of this paper is the development of an agent based approach for Web services discovery andselection in witch, OWL-S is used to describe Web services, QoS and service customer request. We developan efficient semantic service matching which takes into account concepts properties to match concepts inWeb service and service customer request descriptions. Our approach is based on an architecturecomposed of four layers: Web service and Request description layer, Functional match layer, QoScomputing layer and Reputation computing layer.

  14. Web Based Technologies to Support High Level Process Maturity

    Directory of Open Access Journals (Sweden)

    A. V. Sharmila

    2013-07-01

    Full Text Available This paper discusses the uses of Web based Technologies to support High Level Process Maturity in an organization. It also provides an overview of CMMI, focusing on the importance of centralized data storage and data access for sustaining high maturity levels of CMMI. Further, elaboration is made on the web based technology, stressing that change over to Web Based Application is extremely helpful to maintain the centralized data repository, to collect data for process capability baseline, and to track process performance management, with reduced maintenance effort and ease of data access. A case study analysis of advantages of adopting Web Based Technology is also narrated. Finally the paper concludes that the sustenance of High level Process maturity can be achieved by adopting web application technology.

  15. Symmetry-Based Conflict Detection and Resolution Method towards Web3D-based Collaborative Design

    Directory of Open Access Journals (Sweden)

    Mingjiu Yu

    2016-05-01

    Full Text Available In the process of web3D-based collaborative design, it is necessary to completely prevent operation conflicts among designers due to distributed environments and complex 3D models. Therefore, conflict detection and conflict resolution are of great significance to attain an acceptable result. In order to facilitate effective and smooth design work, a symmetry-based collaborative design framework is proposed using the X3D operation models. Combined considerations cover both models and operations, while different operation strategies are utilized for conflict resolution in web-based collaborative design. The strategy can achieve automatic operation, real-time conflict detection based on dynamically adjustable time, and conflict auto-detection and resolution with designers’ customization. A proof-of-concept system is developed for verification. The proposed resolution shows good performance, scalability and interactivity in a case study.

  16. The multi-stream flows and the dynamics of the cosmic web

    International Nuclear Information System (INIS)

    A new numerical technique to identify the cosmic web is proposed. It is based on locating multi-stream flows, i.e. the places where the velocity field is multi-valued. The method is local in Eulerian space, simple and computationally efficient. This technique uses the velocities of particles and thus takes into account the dynamical information. This is in contrast with the majority of standard methods that use the coordinates of particles only. Two quantities are computed in every mesh cell: the mean and variance of the velocity field. Ideally in the cells where the velocity is single-valued the variance must be equal to zero exactly, therefore the cells with non-zero variance are identified as multi-stream flows. The technique has been tested in the Zel'dovich approximation and in the N-body simulation of the ΛCDM model. The effect of numerical noise is discussed. The web identified by the new method has been compared with the web identified by the standard technique using only the particle coordinates. The comparison has shown overall similarity of two webs as expected, however they by no means are identical. For example, the isocontours of the corresponding fields have significantly different shapes and some density peaks of similar heights exhibit significant differences in the velocity variance and vice versa. This suggests that the density and velocity variance have a significant degree of independence. The shape of the two-dimensional pdf of density and velocity variance confirms this proposition. Thus, we conclude that the dynamical information probed by this technique introduces an additional dimension into analysis of the web

  17. CoP Sensing Framework on Web-Based Environment

    Science.gov (United States)

    Mustapha, S. M. F. D. Syed

    The Web technologies and Web applications have shown similar high growth rate in terms of daily usages and user acceptance. The Web applications have not only penetrated in the traditional domains such as education and business but have also encroached into areas such as politics, social, lifestyle, and culture. The emergence of Web technologies has enabled Web access even to the person on the move through PDAs or mobile phones that are connected using Wi-Fi, HSDPA, or other communication protocols. These two phenomena are the inducement factors toward the need of building Web-based systems as the supporting tools in fulfilling many mundane activities. In doing this, one of the many focuses in research has been to look at the implementation challenges in building Web-based support systems in different types of environment. This chapter describes the implementation issues in building the community learning framework that can be supported on the Web-based platform. The Community of Practice (CoP) has been chosen as the community learning theory to be the case study and analysis as it challenges the creativity of the architectural design of the Web system in order to capture the presence of learning activities. The details of this chapter describe the characteristics of the CoP to understand the inherent intricacies in modeling in the Web-based environment, the evidences of CoP that need to be traced automatically in a slick manner such that the evidence-capturing process is unobtrusive, and the technologies needed to embrace a full adoption of Web-based support system for the community learning framework.

  18. 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.

  19. Relation Based Mining Model for Enhancing Web Document Clustering

    Directory of Open Access Journals (Sweden)

    M.Reka

    2014-05-01

    Full Text Available The design of web Information management system becomes more complex one with more time complexity. Information retrieval is a difficult task due to the huge volume of web documents. The way of clustering makes the retrieval easier and less time consuming. Thisalgorithm introducesa web document clustering approach, which use the semantic relation between documents, which reduces the time complexity. It identifies the relations and concepts in a document and also computes the relation score between documents. This algorithm analyses the key concepts from the web documents by preprocessing, stemming, and stop word removal. Identified concepts are used to compute the document relation score and clusterrelation score. The domain ontology is used to compute the document relation score and cluster relation score. Based on the document relation score and cluster relation score, the web document cluster is identified. This algorithm uses 2,00,000 web documents for evaluation and 60 percentas trainingset and 40 percent as testing set.

  20. Web Image Retrieval Search Engine based on Semantically Shared Annotation

    Directory of Open Access Journals (Sweden)

    Alaa Riad

    2012-03-01

    Full Text Available This paper presents a new majority voting technique that combines the two basic modalities of Web images textual and visual features of image in a re-annotation and search based framework. The proposed framework considers each web page as a voter to vote the relatedness of keyword to the web image, the proposed approach is not only pure combination between image low level feature and textual feature but it take into consideration the semantic meaning of each keyword that expected to enhance the retrieval accuracy. The proposed approach is not used only to enhance the retrieval accuracy of web images; but also able to annotated the unlabeled images.

  1. Search Relevance based on the Semantic Web

    OpenAIRE

    Bicer, Veli

    2012-01-01

    In this thesis, we explore the challenge of search relevance in the context of semantic search. Specifically, the notion of semantic relevance can be distinguished from the other types of relevance in Information Retrieval (IR) in terms of employing an underlying semantic model. We propose the emerging Semantic Web data on the Web which is represented in RDF graph structures as an important candidate to become such a semantic model in a search process.

  2. Web4diagnostics - experience with web-based diagnostic systems in power plants

    International Nuclear Information System (INIS)

    At SMORN 8, a new web-based diagnostic system - web4diagnostics - was presented (Kunze, 2002). During the last two years, this system became the standard diagnostic system infrastructure for internal use in Siemens Power Generation, which integrates a large data archive of measured data and capabilities for data analysis and evaluation. Besides this internal use, today some 15 power plants worldwide use web4diagnostics in their companies communication network. Essential features are: monitoring and diagnostic information are provided in HTML page format; diagnosis can be performed on any suitable machine in the computer network; a 'central diagnostic laboratory' can be configured as a virtual facility using the existing IT infrastructure; analysis results can be accessed from any computer in the information network, only a web browser is required. The system employs well-known standard diagnostic modules and also owns tools such as operational based limit surveillance, automatic report generation and automatic information in case of deviations. (author)

  3. A framework for web browser-based medical simulation using WebGL.

    Science.gov (United States)

    Halic, Tansel; Ahn, Woojin; De, Suvranu

    2012-01-01

    This paper presents a web browser-based software framework that provides accessibility, portability, and platform independence for medical simulation. Typical medical simulation systems are restricted to the underlying platform and device, which limits widespread use. Our framework allows realistic and efficient medical simulation using only the web browser for anytime anywhere access using a variety of platforms ranging from desktop PCs to tablets. The framework consists of visualization, simulation, and hardware integration modules that are fundamental components for multimodal interactive simulation. Benchmark tests are performed to validate the rendering and computing performance of our framework with latest web browsers including Chrome and Firefox. The results are quite promising opening up the possibility of developing web-based medical simulation technology.

  4. Interplay between topology and dynamics in the World Trade Web

    CERN Document Server

    Garlaschelli, D; Aste, T; Caldarelli, G; Loffredo, M I

    2007-01-01

    We present an empirical analysis of the network formed by the trade relationships between all world countries, or World Trade Web (WTW). Each (directed) link is weighted by the amount of wealth flowing between two countries, and each country is characterized by the value of its Gross Domestic Product (GDP). By analysing a set of year-by-year data covering the time interval 1950-2000, we show that the dynamics of all GDP values and the evolution of the WTW (trade flow and topology) are tightly coupled. The probability that two countries are connected depends on their GDP values, supporting recent theoretical models relating network topology to the presence of a `hidden' variable (or fitness). On the other hand, the topology is shown to determine the GDP values due to the exchange between countries. This leads us to a new framework where the fitness value is a dynamical variable determining, and at the same time depending on, network topology in a continuous feedback.

  5. A Framework for Web-Based Mechanical Design and Analysis

    Institute of Scientific and Technical Information of China (English)

    Chiaming; Yen; Wujeng; Li

    2002-01-01

    In this paper, a Web-based Mechanical Design and A na lysis Framework (WMDAF) is proposed. This WMADF allows designers to develop web -based computer aided programs in a systematic way during the collaborative mec hanical system design and analysis process. This system is based on an emerg ing web-based Content Management System (CMS) called eXtended Object Oriented P ortal System (XOOPS). Due to the Open Source Status of the XOOPS CMS, programs d eveloped with this framework can be further customized to ...

  6. Incremental Web Usage Mining Based on Active Ant Colony Clustering

    Institute of Scientific and Technical Information of China (English)

    SHEN Jie; LIN Ying; CHEN Zhimin

    2006-01-01

    To alleviate the scalability problem caused by the increasing Web using and changing users' interests, this paper presents a novel Web Usage Mining algorithm-Incremental Web Usage Mining algorithm based on Active Ant Colony Clustering. Firstly, an active movement strategy about direction selection and speed, different with the positive strategy employed by other Ant Colony Clustering algorithms, is proposed to construct an Active Ant Colony Clustering algorithm, which avoid the idle and "flying over the plane" moving phenomenon, effectively improve the quality and speed of clustering on large dataset. Then a mechanism of decomposing clusters based on above methods is introduced to form new clusters when users' interests change. Empirical studies on a real Web dataset show the active ant colony clustering algorithm has better performance than the previous algorithms, and the incremental approach based on the proposed mechanism can efficiently implement incremental Web usage mining.

  7. Text mining of web-based medical content

    CERN Document Server

    Neustein, Amy

    2014-01-01

    Text Mining of Web-Based Medical Content examines web mining for extracting useful information that can be used for treating and monitoring the healthcare of patients. This work provides methodological approaches to designing mapping tools that exploit data found in social media postings. Specific linguistic features of medical postings are analyzed vis-a-vis available data extraction tools for culling useful information.

  8. Decreasing transactional distance in a Web-based course.

    Science.gov (United States)

    Pattillo, Robin E

    2007-01-01

    The Horizon Wimba online Web-conferencing voice system was used to facilitate dialogue and decrease transactional distance in a Web-based course. Small-group (Flashlight survey at the end of the semester. Anecdotal and survey responses indicated that discussion groups increased dialogue between faculty and students. PMID:17496503

  9. 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...

  10. 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…

  11. Invariant-Based Automatic Testing of Modern Web Applications

    NARCIS (Netherlands)

    Mesbah, A.; Van Deursen, A.; Roest, D.

    2011-01-01

    AJAX-based Web 2.0 applications rely on stateful asynchronous client/server communication, and client-side run-time manipulation of the DOM tree. This not only makes them fundamentally different from traditional web applications, but also more error-prone and harder to test. We propose a method for

  12. Open Source Web Based Geospatial Processing with OMAR

    Directory of Open Access Journals (Sweden)

    Mark Lucas

    2009-01-01

    Full Text Available The availability of geospatial data sets is exploding. New satellites, aerial platforms, video feeds, global positioning system tagged digital photos, and traditional GIS information are dramatically increasing across the globe. These raw materials need to be dynamically processed, combined and correlated to generate value added information products to answer a wide range of questions. This article provides an overview of OMAR web based geospatial processing. OMAR is part of the Open Source Software Image Map project under the Open Source Geospatial Foundation. The primary contributors of OSSIM make their livings by providing professional services to US Government agencies and programs. OMAR provides one example that open source software solutions are increasingly being deployed in US government agencies. We will also summarize the capabilities of OMAR and its plans for near term development.

  13. Performance Based Novel Techniques for Semantic Web Mining

    Directory of Open Access Journals (Sweden)

    Mahendra Thakur

    2012-01-01

    Full Text Available The explosive growth in the size and use of the World Wide Web continuously creates new great challenges and needs. The need for predicting the users preferences in order to expedite and improve the browsing though a site can be achieved through personalizing of the websites. Most of the research efforts in web personalization correspond to the evolution of extensive research in web usage mining, i.e. the exploitation of the navigational patterns of the web site visitors. When a personalization system relies solely on usage-based results, however, valuable information conceptually related to what is finally recommended may be missed. Moreover, the structural properties of the web site are often disregarded. In this paper, we propose novel techniques that use the content semantics and the structural properties of a web site in order to improve the effectiveness of web personalization. In the first part of our work we present standing for Semantic Web Personalization, a personalization system that integrates usage data with content semantics, expressed in ontology terms, in order to compute semantically enhanced navigational patterns and effectively generate useful recommendations. To the best of our knowledge, our proposed technique is the only semantic web personalization system that may be used by non-semantic web sites. In the second part of our work, we present a novel approach for enhancing the quality of recommendations based on the underlying structure of a web site. We introduce UPR (Usage-based PageRank, a PageRank-style algorithm that relies on the recorded usage data and link analysis techniques. Overall, we demonstrate that our proposed hybrid personalization framework results in more objective and representative predictions than existing techniques.

  14. Binary Particle Swarm Optimization based Biclustering of Web Usage Data

    Science.gov (United States)

    Rathipriya, R.; Thangavel, K.; Bagyamani, J.

    2011-07-01

    Web mining is the nontrivial process to discover valid, novel, potentially useful knowledge from web data using the data mining techniques or methods. It may give information that is useful for improving the services offered by web portals and information access and retrieval tools. With the rapid development of biclustering, more researchers have applied the biclustering technique to different fields in recent years. When biclustering approach is applied to the web usage data it automatically captures the hidden browsing patterns from it in the form of biclusters. In this work, swarm intelligent technique is combined with biclustering approach to propose an algorithm called Binary Particle Swarm Optimization (BPSO) based Biclustering for Web Usage Data. The main objective of this algorithm is to retrieve the global optimal bicluster from the web usage data. These biclusters contain relationships between web users and web pages which are useful for the E-Commerce applications like web advertising and marketing. Experiments are conducted on real dataset to prove the efficiency of the proposed algorithms.

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

    OpenAIRE

    Mofreh Hogo; Khaled Fouad; Fouad Mousa,

    2009-01-01

    Internet and expert systems have offered new ways of sharing and distributing knowledge, but there is a lack of researches in the area of web-based expert systems. This paper introduces a development of a web-based expert system for the regulations of civil service in the Kingdom of Saudi Arabia named as RCSES. It is the first time to develop such system (application of civil service regulations) as well the development of it using web-based approach. The proposed system considers 17 regulati...

  16. Efficient Image Blur in Web-Based Applications

    DEFF Research Database (Denmark)

    Kraus, Martin

    2010-01-01

    Scripting languages require the use of high-level library functions to implement efficient image processing; thus, real-time image blur in web-based applications is a challenging task unless specific library functions are available for this purpose. We present a pyramid blur algorithm, which can...... be implemented using a subimage copy function, and evaluate its performance with various web browsers in comparison to an infinite impulse response filter. While this pyramid algorithm was first proposed for GPU-based image processing, its applicability to web-based applications indicates that some GPU...

  17. Design and Implementation of WebGIS Based on SOAP

    Institute of Scientific and Technical Information of China (English)

    Feng Yu-cai; Yi Bao-lin; Tan Zhi-peng

    2003-01-01

    Most popular applications currently running on the Internet, the World Wide Web is of an exponential growth in size, which results in network congestion and server overloading. In this paper, we analyze the characteristics of SOAP (Simple Object Access Protocol) and the state-of-art techniques, which have been used in WebGIS. Then, the basic characteristics of DM3 database system were introduced; Furthermore, a novel N-tier WebGIS architecture based on SOAP and the framework supported both server-based and client-based solutions are proposed. Finally, some experiments and implementations are shown.

  18. A Syntactic Classification based Web Page Ranking Algorithm

    CERN Document Server

    Mukhopadhyay, Debajyoti; Kim, Young-Chon

    2011-01-01

    The existing search engines sometimes give unsatisfactory search result for lack of any categorization of search result. If there is some means to know the preference of user about the search result and rank pages according to that preference, the result will be more useful and accurate to the user. In the present paper a web page ranking algorithm is being proposed based on syntactic classification of web pages. Syntactic Classification does not bother about the meaning of the content of a web page. The proposed approach mainly consists of three steps: select some properties of web pages based on user's demand, measure them, and give different weightage to each property during ranking for different types of pages. The existence of syntactic classification is supported by running fuzzy c-means algorithm and neural network classification on a set of web pages. The change in ranking for difference in type of pages but for same query string is also being demonstrated.

  19. WebCN: A web-based computation tool for in situ-produced cosmogenic nuclides

    International Nuclear Information System (INIS)

    Cosmogenic nuclide techniques are increasingly being utilized in geoscience research. For this it is critical to establish an effective, easily accessible and well defined tool for cosmogenic nuclide computations. We have been developing a web-based tool (WebCN) to calculate surface exposure ages and erosion rates based on the nuclide concentrations measured by the accelerator mass spectrometry. WebCN for 10Be and 26Al has been finished and published at http://www.physics.purdue.edu/primelab/for_users/rockage.html. WebCN for 36Cl is under construction. WebCN is designed as a three-tier client/server model and uses the open source PostgreSQL for the database management and PHP for the interface design and calculations. On the client side, an internet browser and Microsoft Access are used as application interfaces to access the system. Open Database Connectivity is used to link PostgreSQL and Microsoft Access. WebCN accounts for both spatial and temporal distributions of the cosmic ray flux to calculate the production rates of in situ-produced cosmogenic nuclides at the Earth's surface

  20. Web Based Application for Reading Comprehension Skills

    Directory of Open Access Journals (Sweden)

    Samir Zidat

    2011-05-01

    Full Text Available The use of the web in languages learning has been developed at very high speed these last years. Thus, we are witnessing many research and development projects set in universities and distance learning programs. However, the interest in research related to writing competence remains relatively low. Our proposed research examines the use of the web for studying English as a second foreign language at an Algerian university. One focus is on pedagogy: therefore, a major part of our research is on developing, evaluating, and analyzing writing comprehension activities, and then composing activities into a curriculum. The article starts with the presentation of language skills and reading comprehension. It then presents our approach of the use of the web for learning English as a second language. Finally a learner evaluation methodology is presented. The article ends with the conclusion and future trends.

  1. A Feedback-Based Web Search Engine

    Institute of Scientific and Technical Information of China (English)

    ZHANG Wei-feng; XU Bao-wen; ZHOU Xiao-yu

    2004-01-01

    Web search engines are very useful information service tools in the Internet.The current web search engines produce search results relating to the search terms and the actual information collected by them.Since the selections of the search results cannot affect the future ones, they may not cover most people's interests.In this paper, feedback information produced by the users' accessing lists will be represented by the rough set and can reconstruct the query string and influence the search results.And thus the search engines can provide self-adaptability.

  2. Web-based pathology practice examination usage

    Directory of Open Access Journals (Sweden)

    Edward C Klatt

    2014-01-01

    Full Text Available Context: General and subject specific practice examinations for students in health sciences studying pathology were placed onto a free public internet web site entitled web path and were accessed four clicks from the home web site menu. Subjects and Methods: Multiple choice questions were coded into. html files with JavaScript functions for web browser viewing in a timed format. A Perl programming language script with common gateway interface for web page forms scored examinations and placed results into a log file on an internet computer server. The four general review examinations of 30 questions each could be completed in up to 30 min. The 17 subject specific examinations of 10 questions each with accompanying images could be completed in up to 15 min each. The results of scores and user educational field of study from log files were compiled from June 2006 to January 2014. Results: The four general review examinations had 31,639 accesses with completion of all questions, for a completion rate of 54% and average score of 75%. A score of 100% was achieved by 7% of users, ≥90% by 21%, and ≥50% score by 95% of users. In top to bottom web page menu order, review examination usage was 44%, 24%, 17%, and 15% of all accessions. The 17 subject specific examinations had 103,028 completions, with completion rate 73% and average score 74%. Scoring at 100% was 20% overall, ≥90% by 37%, and ≥50% score by 90% of users. The first three menu items on the web page accounted for 12.6%, 10.0%, and 8.2% of all completions, and the bottom three accounted for no more than 2.2% each. Conclusions: Completion rates were higher for shorter 10 questions subject examinations. Users identifying themselves as MD/DO scored higher than other users, averaging 75%. Usage was higher for examinations at the top of the web page menu. Scores achieved suggest that a cohort of serious users fully completing the examinations had sufficient preparation to use them to support

  3. 一种动态Web页面缓存技术%A Technology to Caching Dynamic Web Pages

    Institute of Scientific and Technical Information of China (English)

    贺琛; 陈肇雄; 黄河燕

    2002-01-01

    As a result of the drive of information diversity and the trend of personalization, more and more dynamicpages constitute the contents in the Internet. However, it is difficult to cache the dynamic Web pages because of theirdynamic characteristic. In this paper, we propose a technology to solve this problem. It isolates the static and dynam-ic contents of the page, and stores the original page of the Web server and the information of the background data-base locally, in order to improve the client's response time. Additionally, this technology also adopts correspondingreplacement algorithm and coherency policy to track the original page and the data-base update, which tries to syn-chronize the changes of the dynamic pages in time.

  4. A Domain Specific Ontology Based Semantic Web Search Engine

    CERN Document Server

    Mukhopadhyay, Debajyoti; Mukherjee, Sreemoyee; Bhattacharya, Jhilik; Kim, Young-Chon

    2011-01-01

    Since its emergence in the 1990s the World Wide Web (WWW) has rapidly evolved into a huge mine of global information and it is growing in size everyday. The presence of huge amount of resources on the Web thus poses a serious problem of accurate search. This is mainly because today's Web is a human-readable Web where information cannot be easily processed by machine. Highly sophisticated, efficient keyword based search engines that have evolved today have not been able to bridge this gap. So comes up the concept of the Semantic Web which is envisioned by Tim Berners-Lee as the Web of machine interpretable information to make a machine processable form for expressing information. Based on the semantic Web technologies we present in this paper the design methodology and development of a semantic Web search engine which provides exact search results for a domain specific search. This search engine is developed for an agricultural Website which hosts agricultural information about the state of West Bengal.

  5. Animal diversity and ecosystem functioning in dynamic food webs

    Science.gov (United States)

    Schneider, Florian D.; Brose, Ulrich; Rall, Björn C.; Guill, Christian

    2016-10-01

    Species diversity is changing globally and locally, but the complexity of ecological communities hampers a general understanding of the consequences of animal species loss on ecosystem functioning. High animal diversity increases complementarity of herbivores but also increases feeding rates within the consumer guild. Depending on the balance of these counteracting mechanisms, species-rich animal communities may put plants under top-down control or may release them from grazing pressure. Using a dynamic food-web model with body-mass constraints, we simulate ecosystem functions of 20,000 communities of varying animal diversity. We show that diverse animal communities accumulate more biomass and are more exploitative on plants, despite their higher rates of intra-guild predation. However, they do not reduce plant biomass because the communities are composed of larger, and thus energetically more efficient, plant and animal species. This plasticity of community body-size structure reconciles the debate on the consequences of animal species loss for primary productivity.

  6. Web-based versus traditional paper questionnaires

    DEFF Research Database (Denmark)

    Hohwü, Lena; Lyshol, Heidi; Gissler, Mika;

    2013-01-01

    Svarprocenten for spørgeskemaundersøgelser har været faldende gennem det seneste årti. Dette studie viser, at dataindsamling via web-baserede spørgeskemaer er ligeså effektivt som indsamling via traditionelle spørgeskemaer i papirform. Der er færre udgifter ved den elektroniske dataindsamling, og...

  7. Web Resources for Mass Spectrometry-based Proteomics

    Institute of Scientific and Technical Information of China (English)

    Tao Chen; Jie Zhao; Jie Ma; Yunping Zhu

    2015-01-01

    With the development of high-resolution and high-throughput mass spectrometry (MS) technology, a large quantum of proteomic data is continually being generated. Collecting and shar-ing these data are a challenge that requires immense and sustained human effort. In this report, we provide a classification of important web resources for MS-based proteomics and present rating of these web resources, based on whether raw data are stored, whether data submission is supported, and whether data analysis pipelines are provided. These web resources are important for biologists involved in proteomics research.

  8. Design and Implementation of WebGIS Based on SOAP

    Institute of Scientific and Technical Information of China (English)

    FengYu-cai; YiBao-lin; TanZhi-peng

    2003-01-01

    Most popular applications currently running on the Internet, the World Wide Web is of an exponential growth in size, which results in network congestion and server overloading. In this paper, we analyze the characteristics of SOAP (Simple Object Access Protocol) and the state-of-art techniques, which have been used in WebGIS. Then, the basic characteristics of DM3 database system were introduced; Furthermore, a novel N-tier WebGIS architecture based on SOAP and the framework supported both serverbased and client-based solutions are proposed. Finally, some experiments and implementations are shown.

  9. DYNAMIC REQUEST DISPATCHING ALGORITHM FOR WEB SERVER CLUSTER

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The overall increase in traffic on the WWWcauses a disproportionate increase in client requeststo popular web sites.Site administrators constantlyface the requirement to i mprove server's capacity.Web server cluster is a popular solution.It usesgroup of independent servers that are managed as asingle systemfor higher availability,easier manage-ability and greater scalability.Many web sites haveadopted this solution.Request dispatching[1-2]is one of the core tech-nologies used by parallel web server clusters...

  10. Web-Based Instruction A Guide for Libraries

    CERN Document Server

    Smith, Susan Sharpless

    2010-01-01

    Expanding on the popular, practical how-to guide for public, academic, school, and special libraries, technology expert Susan Sharpless Smith offers library instructors the confidence to take Web-based instruction into their own hands.

  11. Business intelligence and capacity planning: web-based solutions.

    Science.gov (United States)

    James, Roger

    2010-07-01

    Income (activity) and expenditure (costs) form the basis of a modern hospital's 'business intelligence'. However, clinical engagement in business intelligence is patchy. This article describes the principles of business intelligence and outlines some recent developments using web-based applications.

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

    DEFF Research Database (Denmark)

    Dragoni, Nicola; Miotto, Nicola

    2011-01-01

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

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

    DEFF Research Database (Denmark)

    Dragoni, Nicola

    2010-01-01

    The basic tenet of Service-Oriented Computing (SOC) is the possibility of building distributed applications on the Web by using Web Services as fundamental building blocks. The proliferation of such services is considered the second wave of evolution in the Internet age, moving the Web from...... a collection of pages to a collections of services. Consensus is growing that this Web Service “revolution” won't eventuate until we resolve trust-related issues. Indeed, the intrinsic openness of the SOC vision makes crucial to locate useful services and recognize them as trustworthy. In this paper we review...... the field of trust-based Web Service selection, providing a structured classification of current approaches and highlighting the main limitations of each class and of the overall field. As a result, we claim that a soft notion of trust lies behind such weaknesses and we advocate the need of a new approach...

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

    CERN Document Server

    García, Boni; 10.4204/EPTCS.61.4

    2011-01-01

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

  15. Reliability, compliance, and security in web-based course assessments

    Directory of Open Access Journals (Sweden)

    Scott Bonham

    2008-04-01

    Full Text Available Pre- and postcourse assessment has become a very important tool for education research in physics and other areas. The web offers an attractive alternative to in-class paper administration, but concerns about web-based administration include reliability due to changes in medium, student compliance rates, and test security, both question leakage and utilization of web resources. An investigation was carried out in introductory astronomy courses comparing pre- and postcourse administration of assessments using the web and on paper. Overall no difference was seen in performance due to the medium. Compliance rates fluctuated greatly, and factors that seemed to produce higher rates are identified. Notably, email reminders increased compliance by 20%. Most of the 559 students complied with requests to not copy, print, or save questions nor use web resources; about 1% did copy some question text and around 2% frequently used other windows or applications while completing the assessment.

  16. The Effectiveness of Web-Based Instruction: An Initial Inquiry

    Directory of Open Access Journals (Sweden)

    Tatana M. Olson

    2002-10-01

    Full Text Available As the use of Web-based instruction increases in the educational and training domains, many people have recognized the importance of evaluating its effects on student outcomes such as learning, performance, and satisfaction. Often, these results are compared to those of conventional classroom instruction in order to determine which method is “better.” However, major differences in technology and presentation rather than instructional content can obscure the true relationship between Web-based instruction and these outcomes. Computer-based instruction (CBI, with more features similar to Web-based instruction, may be a more appropriate benchmark than conventional classroom instruction. Furthermore, there is little consensus as to what variables should be examined or what measures of learning are the most appropriate, making comparisons between studies difficult and inconclusive. In this article, we review the historical findings of CBI as an appropriate benchmark to Web-based instruction. In addition, we review 47 reports of evaluations of Web-based courses in higher education published between 1996 and 2002. A tabulation of the documented findings into eight characteristics is offered, along with our assessments of the experimental designs, effect sizes, and the degree to which the evaluations incorporated features unique to Web-based instruction.

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

    OpenAIRE

    Mr. Manishkumar R. Solanki; Ms. Seema Shah

    2014-01-01

    Today the ability to seamlessly exchange information between internal business processes, customers, and partners is vital for success. The organizations employ a variety of disparate applications that store and exchange data in dissimilar ways and therefore cannot "talk" to one another productively. Web services have evolved as a practical, cost-effective, deployment environment to realize dynamic and interoperable data integration between critical applications over operating...

  18. NC Lathe Training System Based on the Web

    Institute of Scientific and Technical Information of China (English)

    卢碧红; 黄文丽; 葛研军

    2004-01-01

    Based on an analysis of the requirement of network-oriented NC lathe training system, a general framework of web-based training system is established. The key techniques for establishing this system include a three-layer web structure in building the general framework, the technique of VRML to model a virtual operating environment, and the access to the database using the ASP technique.

  19. Nucleonica. Web-based software tools for simulation and analysis

    International Nuclear Information System (INIS)

    The authors present a description of the Nucleonica web-based portal for simulation and analysis for a wide range of commonly encountered nuclear science applications. Advantages of a web-based approach include availability wherever there is internet access, intuitive user-friendly interface, remote access to high-power computing resources, and continual maintenance, improvement, and addition of tools and techniques common to the nuclear science industry. A description of the nuclear data resources, and some applications is given.

  20. Choosing Open Innovation Intermediaries through their web-based platforms

    OpenAIRE

    Aquilani, Barbara; Abbate, Tindara; Dominici, Gandolfo

    2016-01-01

    This paper examines the services provided by Open Innovation Intermediaries (OIIs) through their web-based platforms, in order to understand how OIIs can effectively support innovation seekers in their innovation processes. Relying on the existing literature exploring the roles and functions of web-based OII platforms, we carried out an exploratory and comparative qualitative study to identify the services available, to classify them by the various phases of the innovation processes in which ...

  1. Nucleonica: Web-based Software Tools for Simulations and Analysis

    OpenAIRE

    Magill, Joseph; DREHER Raymond; SOTI Zsolt; LASCHE George

    2012-01-01

    The authors present a description of a new web-based software portal for simulation and analysis for a wide range of commonly encountered nuclear science applications. Advantages of a web-based approach include availability wherever there is internet access, intuitive user-friendly interface, remote access to high-power computing resources, and continual maintenance, improvement, and addition of tools and techniques common to the nuclear science industry. A description of the nuclear data res...

  2. A web-based approach to data imputation

    KAUST Repository

    Li, Zhixu

    2013-10-24

    In this paper, we present WebPut, a prototype system that adopts a novel web-based approach to the data imputation problem. Towards this, Webput utilizes the available information in an incomplete database in conjunction with the data consistency principle. Moreover, WebPut extends effective Information Extraction (IE) methods for the purpose of formulating web search queries that are capable of effectively retrieving missing values with high accuracy. WebPut employs a confidence-based scheme that efficiently leverages our suite of data imputation queries to automatically select the most effective imputation query for each missing value. A greedy iterative algorithm is proposed to schedule the imputation order of the different missing values in a database, and in turn the issuing of their corresponding imputation queries, for improving the accuracy and efficiency of WebPut. Moreover, several optimization techniques are also proposed to reduce the cost of estimating the confidence of imputation queries at both the tuple-level and the database-level. Experiments based on several real-world data collections demonstrate not only the effectiveness of WebPut compared to existing approaches, but also the efficiency of our proposed algorithms and optimization techniques. © 2013 Springer Science+Business Media New York.

  3. Control of a five motors web transport system based on the Energetic Macroscopic Representation

    Directory of Open Access Journals (Sweden)

    Hachemi Glaoui,

    2011-02-01

    Full Text Available The objective is to control a web transport system with winder and unwinder for elastic material. A physical mod-eling of this plant is made based on the general laws of physics. For this type of controlproblem, it is extremely important to prevent the occurrence of web break or fold by decoupling the web tension and the web velocity. Due to the wide-range variation of the radius and inertia of the rollers the system dynamics change considerably during the winding/unwinding process The system is composed of five paper rollers and a tensioning roller. A control structure is suggested for this system. This control is deduced from an Energetic Macroscopic Representation of the system. Neither robust control strategy nor mechanical emulation is required, but this control needs a large number of controllers.

  4. E-Learning System Overview Based on Semantic Web

    Science.gov (United States)

    Alsultanny, Yas A.

    2006-01-01

    The challenge of the semantic web is the provision of distributed information with well-defined meaning, understandable for different parties. e-Learning is efficient task relevant and just-in-time learning grown from the learning requirements of the new dynamically changing, distributed business world. In this paper we design an e-Learning system…

  5. Key Techniques for the Development of Web-Based PDM System

    Institute of Scientific and Technical Information of China (English)

    WANG Li-juan; ZHANG Xu; NING Ru-xin

    2006-01-01

    Some key techniques for the development of web-based product data management (PDM) system are introduced. The four-tiered B/S architecture of a PDM system-BITPDM is introduced first, followed by its design and implementation, including virtual data vault, flexible coding system, document management,product structure and configuration management, workflow/process and product maturity management. BITPDM can facilitate the activities from new product introduction phase to manufacturing, and manage the product data and their dynamic changing history. Based on Microsoft. NET, XML, web service and SOAP techniques, BITPDM realizes the integration and efficient management of product information.

  6. WEB SERVICE SELECTION ALGORITHM BASED ON PRINCIPAL COMPONENT ANALYSIS

    Institute of Scientific and Technical Information of China (English)

    Kang Guosheng; Liu Jianxun; Tang Mingdong; Cao Buqing

    2013-01-01

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

  7. Web-based Semantic and Personalized Information Retrieval

    Directory of Open Access Journals (Sweden)

    Khaled M. Fouad

    2012-05-01

    Full Text Available Effective retrieval of the most relevant documents on the topic of interest from the Web is difficult due to the large amount of information in all types of formats. Studies have been conducted on ways to improve the efficiency of information retrieval (IR systems. To arrive to suitable solutions in IR systems, machines need additional semantic information that helps in understanding Web documents. In this paper, the definition of semantic IR model is investigated, oriented to the exploitation of domain ontology and WordNet to support semantic IR capabilities in Web documents, stressing on the use of ontologies in the semantic-based perspective. The system that uses Semantic Web and agent to support more expressive queries and more accurate results is proposed. The examination of the proposed system is performed by an experiment that is based on relevance based evaluation, and user satisfaction based evaluation. The results of the experiment shows that the proposed system, which is based on Semantic Web and agent, can improve the accuracy and effectiveness for retrieving relevant Web documents in specific domain.

  8. Analysis and Design of Web Server Based on Softbase%基于SOftbase的Web Server分析与设计

    Institute of Scientific and Technical Information of China (English)

    黄松英; 涂征

    2001-01-01

    This paper firstly analyses common structure and function ,then designs a new structure of Web server based on seenre Softbase.%分析了Web Sewer的一般结构及功能特点,设计了一种基于Sofbase安全数据库系统的Web Server.

  9. Real-Time Technology of Web Based on WebSocket%基于WebSocket的实时技术

    Institute of Scientific and Technical Information of China (English)

    肖在昌; 杨文晖; 刘兵

    2012-01-01

    Many Web applications, such as stock systems, web games and online booking system, should send the changes of the server to the client in real time, so the client don't need to send requests and refresh to achieve real-time data. This acticle focuses on the analysis of server push technology, and builds the new real-time technology based on event-driven NodeJS and WebSocket, which is the new feature of HTML5.%很多Web应用如股票系统、网页游戏、在线订票系统,都需要将服务器端的变化实时发送到客户端,无需客户端不断发送请求和刷新来实现数据的实时性。本文对目前实时技术进行分析,结合HTML5新特性WebSocket与基于事件驱动的NodeJS构建了一种新的Web实时技术。

  10. Web-based Logbook System for EAST Experiments

    International Nuclear Information System (INIS)

    Implementation of a web-based logbook system on EAST is introduced, which can store the comments for the experiments into a database and access the documents via various web browsers. The three-tier software architecture and asynchronous access technology are adopted to improve the system effectively. Authorized users can view the information of real-time discharge, comments from others and signal plots; add, delete, or revise their own comments; search signal data or comments under complicated search conditions; and collect relevant information and output it to an excel file. The web pages can be automatically updated after a new discharge is completed and without refreshment.

  11. Web mining based on chaotic social evolutionary programming algorithm

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    With an aim to the fact that the K-means clustering algorithm usually ends in local optimization and is hard to harvest global optimization, a new web clustering method is presented based on the chaotic social evolutionary programming (CSEP) algorithm. This method brings up the manner of that a cognitive agent inherits a paradigm in clustering to enable the cognitive agent to acquire a chaotic mutation operator in the betrayal. As proven in the experiment, this method can not only effectively increase web clustering efficiency, but it can also practically improve the precision of web clustering.

  12. 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.

  13. A web based Tourist / Festival trip Android mobile application

    OpenAIRE

    Chang, Jui-wen

    2013-01-01

    This study aims to develop a practical tourist mobile application for tourists and local residents in the city of Edinburgh. From the market survey done by LG and Yahoo in the year 2013, it can be concluded that from the point of view of both mobile developers and users, more of the population is choosing Android than iOS or Windows smartphones. Thus, this study chooses an Android platform combined with web app technology to develop a web based, personal eating and drinking guide. A web app c...

  14. DYNAMIC MODELLING APPROACH FOR WEB USAGE MINING USING OPEN WEB RESOURCES

    OpenAIRE

    B. NAVEENA DEVI; O. SREEVANI

    2010-01-01

    Predicting of users browsing behavior is an important technology of E-commerce application. The prediction results can be used for personalization. Building proper web site, improving marketing strategy , promotion, product supply, getting marketing information, forecasting market trends and increasing the competitive strength of enterprises etc., In this paper proposed system used open web resources practical e-business data sets for the development of innovative e-business applications with...

  15. Creating Web-Based Scientific Applications Using Java Servlets

    Science.gov (United States)

    Palmer, Grant; Arnold, James O. (Technical Monitor)

    2001-01-01

    There are many advantages to developing web-based scientific applications. Any number of people can access the application concurrently. The application can be accessed from a remote location. The application becomes essentially platform-independent because it can be run from any machine that has internet access and can run a web browser. Maintenance and upgrades to the application are simplified since only one copy of the application exists in a centralized location. This paper details the creation of web-based applications using Java servlets. Java is a powerful, versatile programming language that is well suited to developing web-based programs. A Java servlet provides the interface between the central server and the remote client machines. The servlet accepts input data from the client, runs the application on the server, and sends the output back to the client machine. The type of servlet that supports the HTTP protocol will be discussed in depth. Among the topics the paper will discuss are how to write an http servlet, how the servlet can run applications written in Java and other languages, and how to set up a Java web server. The entire process will be demonstrated by building a web-based application to compute stagnation point heat transfer.

  16. A Dynamic Recommender System for Improved Web Usage Mining and CRM Using Swarm Intelligence.

    Science.gov (United States)

    Alphy, Anna; Prabakaran, S

    2015-01-01

    In modern days, to enrich e-business, the websites are personalized for each user by understanding their interests and behavior. The main challenges of online usage data are information overload and their dynamic nature. In this paper, to address these issues, a WebBluegillRecom-annealing dynamic recommender system that uses web usage mining techniques in tandem with software agents developed for providing dynamic recommendations to users that can be used for customizing a website is proposed. The proposed WebBluegillRecom-annealing dynamic recommender uses swarm intelligence from the foraging behavior of a bluegill fish. It overcomes the information overload by handling dynamic behaviors of users. Our dynamic recommender system was compared against traditional collaborative filtering systems. The results show that the proposed system has higher precision, coverage, F1 measure, and scalability than the traditional collaborative filtering systems. Moreover, the recommendations given by our system overcome the overspecialization problem by including variety in recommendations.

  17. Web Design Curriculum and Syllabus Based on Web Design Practice and Students' Prior Knowledge

    Science.gov (United States)

    Krunic, Tanja; Ruzic-Dimitrijevic, Ljiljana; Petrovic, Branka; Farkas, Robert

    2006-01-01

    The Advanced Technical School from Novi Sad set up a completely new study group for web design in 2004. The main goals of the paper are to explain the steps that were taken in starting this group, and to present the educational program based on our own research through the organization of the group and course descriptions. Since there is a…

  18. Development of a Complex Web-Based Advertising System

    OpenAIRE

    Mornar, Vedran; Helman, Tomo; Fertalj, Krešimir

    2000-01-01

    This paper describes the architecture and development of a web-based system for producing, gathering and exchange of multimedia advertisements. The advertisements are classified and stored into a database on the server. The information about an advertisement includes free text and a set of values for predefined attributes. Optionally, any other computer file can be attached. A web site has been established and standard browsers can be used to manipulate the data online. A set of client progra...

  19. Deploying web-based visual exploration tools on the grid

    Energy Technology Data Exchange (ETDEWEB)

    Jankun-Kelly, T.J.; Kreylos, Oliver; Shalf, John; Ma, Kwan-Liu; Hamann, Bernd; Joy, Kenneth; Bethel, E. Wes

    2002-02-01

    We discuss a web-based portal for the exploration, encapsulation, and dissemination of visualization results over the Grid. This portal integrates three components: an interface client for structured visualization exploration, a visualization web application to manage the generation and capture of the visualization results, and a centralized portal application server to access and manage grid resources. We demonstrate the usefulness of the developed system using an example for Adaptive Mesh Refinement (AMR) data visualization.

  20. The research of Web GIS based on portal

    Science.gov (United States)

    Shen, Lei; Duan, Weixi; Ren, Yingchao; Dong, Peng; Wu, Lei; Tan, Jian

    2008-10-01

    With the rapid development of computer network technologies and distributed computing technologies, more and more enterprises begin to accept and use Web GIS. As a result of the thought that traditional Web GIS has focused on system, a number of existing Web GIS are isolated by each other, and facing the problems with data islands and function overlaps, which results in the waste of spatial data resources, the redundant construction of spatial information service, the difficulty of system integration and so on. All of these demands that the new generation Web GIS should focus on users, be service-oriented and be easily integrated systems. The introduction of Portal can solve difficulties above. This paper studies how to bring in Portal in the process of designing and developing Web GIS to solve the difficulties of resource integration and the personalized services of users. And the author has successfully implemented a Web GIS Portal based on JSR 168 Java Portlet Specification. The facts have proved that a Web GIS developed by Portal can provide users with better user experience and be easily integrated with other application systems.

  1. Towards structural Web Services matching based on Kernel methods

    Institute of Scientific and Technical Information of China (English)

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

    2007-01-01

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

  2. Asynchronous, web-based course in astronomy

    Science.gov (United States)

    Spergel, M.

    The course described here is a general educational, non-prerequisite and non- mathematical college course in astronomy offered on the web. It consists of readings from the text plus other periodical sources both online and offline. The course also requires the student to utilize a virtual planetarium to perform exercises in viewing the sky. The students respond to conceptual, multiple-choice questions. This course gives the student a sense of the night sky through the use of computer simulations and night observation. The students learn to understand and express scientific ideas. In addition, since the course is enhanced in computer usage and writing, students also develop these important skills.

  3. Web2Quests: Updating a Popular Web-Based Inquiry-Oriented Activity

    Science.gov (United States)

    Kurt, Serhat

    2009-01-01

    WebQuest is a popular inquiry-oriented activity in which learners use Web resources. Since the creation of the innovation, almost 15 years ago, the Web has changed significantly, while the WebQuest technique has changed little. This article examines possible applications of new Web trends on WebQuest instructional strategy. Some possible…

  4. 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.

  5. A web product data management system based on Simple Object Access Protocol

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    A new web product data management architecture is presented. The three-tier web architecture and Simple Object Access Protocol (SOAP) are combined to build the web-based product data management (PDM) system which includes three tiers: the user services tier, the business services tier, and the data services tier. The client service component uses the serverside technology, and Extensible Markup Language (XML) web service which uses SOAP as the communication protocol is chosen as the business service component. To illustrate how to build a web-based PDM system using the proposed architecture,a case PDM system which included three logical tires was built. To use the security and central management features of the database, a stored procedure was recommended in the data services tier. The business object was implemented as an XML web service so that client could use standard internet protocols to communicate with the business object from any platform. In order to satisfy users using all sorts of browser, the server-side technology and Microsoft ASP.NET was used to create the dynamic user interface.

  6. Dynamic Network of Concepts from Web-Publications

    OpenAIRE

    Lande, D. V.; Snarskii, A. A.

    2008-01-01

    The network, the nodes of which are concepts (people's names, companies' names, etc.), extracted from web-publications, is considered. A working algorithm of extracting such concepts is presented. Edges of the network under consideration refer to the reference frequency which depends on the fact how many times the concepts, which correspond to the nodes, are mentioned in the same documents. Web-documents being published within a period of time together form an information flow, which defines ...

  7. Integration of Flexible Web Based GUI in I-SOAS

    CERN Document Server

    Ahmed, Zeeshan

    2010-01-01

    It is necessary to improve the concepts of the present web based graphical user interface for the development of more flexible and intelligent interface to provide ease and increase the level of comfort at user end like most of the desktop based applications. This research is conducted targeting the goal of implementing flexible GUI consisting of a visual component manager with different components by functionality, design and purpose. In this research paper we present a Rich Internet Application (RIA) based graphical user interface for web based product development, and going into the details we present a comparison between existing RIA Technologies, adopted methodology in the GUI development and developed prototype.

  8. Enhancing Icing Training for Pilots Through Web-Based Multimedia

    Science.gov (United States)

    Fletcher, William; Nolan, Gary; Adanich, Emery; Bond, Thomas H.

    2006-01-01

    The Aircraft Icing Project of the NASA Aviation Safety Program has developed a number of in-flight icing education and training aids designed to increase pilot awareness about the hazards associated with various icing conditions. The challenges and advantages of transitioning these icing training materials to a Web-based delivery are discussed. Innovative Web-based delivery devices increased course availability to pilots and dispatchers while increasing course flexibility and utility. These courses are customizable for both self-directed and instructor-led learning. Part of our goal was to create training materials with enough flexibility to enable Web-based delivery and downloadable portability while maintaining a rich visual multimedia-based learning experience. Studies suggest that using visually based multimedia techniques increases the effectiveness of icing training materials. This paper describes these concepts, gives examples, and discusses the transitional challenges.

  9. Mobile Police Information System Based on Web Services

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

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

  10. A Web Based Collaborative Design Environment for Spacecraft

    Science.gov (United States)

    Dunphy, Julia

    1998-01-01

    In this era of shrinking federal budgets in the USA we need to dramatically improve our efficiency in the spacecraft engineering design process. We have come up with a method which captures much of the experts' expertise in a dataflow design graph: Seamlessly connectable set of local and remote design tools; Seamlessly connectable web based design tools; and Web browser interface to the developing spacecraft design. We have recently completed our first web browser interface and demonstrated its utility in the design of an aeroshell using design tools located at web sites at three NASA facilities. Multiple design engineers and managers are now able to interrogate the design engine simultaneously and find out what the design looks like at any point in the design cycle, what its parameters are, and how it reacts to adverse space environments.

  11. Web-based stereoscopic visualization for the global anatomy classroom.

    Science.gov (United States)

    Kaspar, Mathias; Dech, Fred; Parsad, Nigel M; Silverstein, Jonathan C

    2011-01-01

    Many projects have focused on the improvement of virtual education. We have contributed with the global virtual anatomy course for teaching students in multiple locations with stereoscopic volume rendering, audio/video conferencing and additional materials. This year we focused on further simplifying the deployment of the classroom by using the new collaborative and web-based visualization system CoWebViz, to transfer stereoscopic visualization to the classrooms. Besides the necessary hardware installations for stereoscopy, only a web browser is necessary to view and to interact with the remote 3D stereo visualization. This system proved stable, gave higher quality images and increased ease of deployment. Its success within our classroom at the University of Chicago and Cardiff University has motivated us to continue CoWebViz development. PMID:21335801

  12. Tele-medical imaging conference system based on the Web.

    Science.gov (United States)

    Choi, Heung-Kook; Park, Se-Myung; Kang, Jae-Hyo; Kim, Sang-Kyoon; Choi, Hang-Mook

    2002-06-01

    In this paper, a medical imaging conference system is presented, which is carried out in the Web environment using the distributed object technique, CORBA. Independent of platforms and different developing languages, the CORBA-based medical imaging conference system is very powerful for system development, extension and maintenance. With this Web client/server, one could easily execute a medical imaging conference using Applets on the Web. The Java language, which is object-oriented and independent of platforms, has the advantage of free usage wherever the Web browser is. By using the proposed system, we envisage being able to open a tele-conference using medical images, e.g. CT, MRI, X-ray etc., easily and effectively among remote hospitals.

  13. Enabling Problem Based Learning through Web 2.0 Technologies

    DEFF Research Database (Denmark)

    Tambouris, Efthimios; Panopoulou, Eleni; Tarabanis, Konstantinos;

    2012-01-01

    Advances in Information and Communications Technology (ICT), particularly the so-called Web 2.0, are affecting all aspects of our life: how we communicate, how we shop, how we socialise, and how we learn. Facilitating learning through the use of ICT, also known as eLearning, is a vital part...... of modern educational systems. Established pedagogical strategies, such as Problem Based Learning (PBL), are being adapted for online use in conjunction with modern Web 2.0 technologies and tools. However, even though Web 2.0 and progressive social-networking technologies are automatically associated...... with ideals such as collaboration, sharing, and active learning, it is also possible to use them in a very conservative, teacher-centred way limiting thus their impact. In this paper, we present a PBL 2.0 framework, i.e., a framework combining PBL practices with Web 2.0 technologies. More specifically, we (a...

  14. Shortest Paths Based Web Service Selection in Internet of Things

    Directory of Open Access Journals (Sweden)

    Xiangdong Yin

    2014-01-01

    Full Text Available The connecting of things to the Internet makes it possible for smart things to access all kinds of Web services. However, smart things are energy-limited, and suitable selection of Web services will consume less resources. In this paper, we study the problem of selecting some Web service from the candidate set. We formulate this selection of Web services for smart things as single-source many-target shortest path problem. We design algorithms based on the Dijkstra and breadth-first search algorithms, propose an efficient pruning algorithm for breadth-first search, and analyze their performance of number of iterations and I/O cost. Our empirical evaluation on real-life graphs shows that our pruning algorithm is more efficient than the breadth-first search algorithm.

  15. Graph based E-Government web service composition

    CERN Document Server

    Elmaghraoui, Hajar; Chiadmi, Dalila; Benhlima, Laila

    2011-01-01

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

  16. Firm Traits and Web Based Disclosures in Top Nigerian Firms

    Directory of Open Access Journals (Sweden)

    Bello Ayuba

    2016-02-01

    Full Text Available The use of the internet as a medium of dissemination of information to stakeholders is increasingly gaining grounds. This study extends existing literature on web disclosures by investigating the characteristics that predict the extent of web-based disclosures. In this study, corporate websites of top Nigerian firms are used as sources of data, while a regression analysis is employed to examine the extent of prediction. Results indicate that the firm size and industry type are significant determinants of web disclosures. However, other firm traits such as ownership dispersion and financial performance do not significantly explain the extent of internet disclosures. The study recommends that a regulatory template for corporate web disclosures be put in place by government regardless of the size or industry classification of the firm. This is with a view to considerably reduce agency conflicts arising from information asymmetry in publicly listed firms in Nigeria.

  17. Research of marine sensor web based on SOA and EDA

    Science.gov (United States)

    Jiang, Yongguo; Dou, Jinfeng; Guo, Zhongwen; Hu, Keyong

    2015-04-01

    A great deal of ocean sensor observation data exists, for a wide range of marine disciplines, derived from in situ and remote observing platforms, in real-time, near-real-time and delayed mode. Ocean monitoring is routinely completed using sensors and instruments. Standardization is the key requirement for exchanging information about ocean sensors and sensor data and for comparing and combining information from different sensor networks. One or more sensors are often physically integrated into a single ocean `instrument' device, which often brings in many challenges related to diverse sensor data formats, parameters units, different spatiotemporal resolution, application domains, data quality and sensors protocols. To face these challenges requires the standardization efforts aiming at facilitating the so-called Sensor Web, which making it easy to provide public access to sensor data and metadata information. In this paper, a Marine Sensor Web, based on SOA and EDA and integrating the MBARI's PUCK protocol, IEEE 1451 and OGC SWE 2.0, is illustrated with a five-layer architecture. The Web Service layer and Event Process layer are illustrated in detail with an actual example. The demo study has demonstrated that a standard-based system can be built to access sensors and marine instruments distributed globally using common Web browsers for monitoring the environment and oceanic conditions besides marine sensor data on the Web, this framework of Marine Sensor Web can also play an important role in many other domains' information integration.

  18. An Effective Combined Feature For Web Based Image Retrieval

    Directory of Open Access Journals (Sweden)

    H.M.R.B Herath

    2015-08-01

    Full Text Available Abstract Technology advances as well as the emergence of large scale multimedia applications and the revolution of the World Wide Web has changed the world into a digital age. Anybody can use their mobile phone to take a photo at any time anywhere and upload that image to ever growing image databases. Development of effective techniques for visual and multimedia retrieval systems is one of the most challenging and important directions of the future research. This paper proposes an effective combined feature for web based image retrieval. Frequently used colour and texture features are explored in order to develop a combined feature for this purpose. Widely used three colour features Colour moments Colour coherence vector and Colour Correlogram and three texture features Grey Level Co-occurrence matrix Tamura features and Gabor filter were analyzed for their performance. Precision and Recall were used to evaluate the performance of each of these techniques. By comparing precision and recall values the methods that performed best were taken and combined to form a hybrid feature. The developed combined feature was evaluated by developing a web based CBIR system. A web crawler was used to first crawl through Web sites and images found in those sites are downloaded and the combined feature representation technique was used to extract image features. The test results indicated that this web system can be used to index web images with the combined feature representation schema and to find similar images. Random image retrievals using the web system shows that the combined feature can be used to retrieve images belonging to the general image domain. Accuracy of the retrieval can be noted high for natural images like outdoor scenes images of flowers etc. Also images which have a similar colour and texture distribution were retrieved as similar even though the images were belonging to deferent semantic categories. This can be ideal for an artist who wants

  19. A personalized web page content filtering model based on segmentation

    CERN Document Server

    Kuppusamy, K S; 10.5121/ijist.2012.2104

    2012-01-01

    In the view of massive content explosion in World Wide Web through diverse sources, it has become mandatory to have content filtering tools. The filtering of contents of the web pages holds greater significance in cases of access by minor-age people. The traditional web page blocking systems goes by the Boolean methodology of either displaying the full page or blocking it completely. With the increased dynamism in the web pages, it has become a common phenomenon that different portions of the web page holds different types of content at different time instances. This paper proposes a model to block the contents at a fine-grained level i.e. instead of completely blocking the page it would be efficient to block only those segments which holds the contents to be blocked. The advantages of this method over the traditional methods are fine-graining level of blocking and automatic identification of portions of the page to be blocked. The experiments conducted on the proposed model indicate 88% of accuracy in filter...

  20. PathMiner: A Web-Based Tool for Computer-Assisted Diagnostics in Pathology

    OpenAIRE

    Yang, Lin; Tuzel, Oncel; Chen, Wenjin; van der Meer, Peter; Salaru, Gratian; Goodell, Lauri A.; Foran, David J

    2009-01-01

    Large-scale, multi-site collaboration has become indispensable for a wide range of research and clinical activities which rely on the capacity of individuals to dynamically acquire, share and assess images and correlated data. In this paper, we report the development of a web-based system, PathMiner, for interactive telemedicine, intelligent archiving and automated decision support in pathology. The PathMiner system supports network-based submission of queries and can automatically locate and...

  1. Measuring QoS in Web-Based Virtual Worlds : an evaluation of Unity 3D web builds

    OpenAIRE

    Bakri, Hussein; Allison, Colin

    2016-01-01

    Web Based Virtual Worlds (WBVW) provide users with an immersive 3D experience through their regular browser. They can be seen as prototypes for the 3D Web. This paper uses key Quality of Service metrics to compare and present measurements of two major formats for WBVW – Unity Web Player and WebGL. Significantly, in terms of realizing the 3D Web, the former requires a plug-in whereas the latter is now directly supported by major browsers. Metrics include Frames per Second, Frame Time, CPU usag...

  2. Enhanced Architecture of a Web Warehouse based on Quality Evaluation Framework to Incorporate Quality Aspects in Web Warehouse Creation

    Directory of Open Access Journals (Sweden)

    Umm-e-Mariya Shah

    2011-01-01

    Full Text Available In the recent years, it has been observed that World Wide Web (www became a vast source of information explosion about all areas of interest. Relevant information retrieval is difficult from the web space as there is no universal configuration and organization of the web data. Taking the advantage of data warehouse functionality and integrating it with the web to retrieve relevant data is the core concept of web warehouse. It is a repository that store relevant web data for business decision making. The basic function of web warehouse is to collect and store the information for analysis of users. The quality of web warehouse data affects a lot on data analysis. To enhance the quality of decision making different quality dimensions must be incorporated in web warehouse architecture. In this paper enhanced web warehouse architecture is proposed and discussed. The enhancement in the existing architecture is based on the quality evaluation framework. The enhanced architecture adds three layers in existing architecture to insure quality at various phases of web warehouse system creation. The source assessment, query evaluation and data quality layers enhance the quality of data store in web warehouse.

  3. Semantic Web based Self-management for a Pervasive Service Middleware

    DEFF Research Database (Denmark)

    Zhang, Weishan; Hansen, Klaus Marius

    2008-01-01

    ontologies. The proposed approach is justified from the characteristics of pervasive computing and the open world assumption and reasoning potentials of semantic Web and its rule language. To enable real-time self-management, application level and network level state reporting is employed in our approach......Self-management is one of the challenges for realizing ambient intelligence in pervasive computing. In this paper,we propose and present a semantic Web based self-management approach for a pervasive service middleware where dynamic context information is encoded in a set of self-management context....... State changes are triggering execution of self-management rules for adaption, monitoring, diagnosis, and so on. Evaluations of self-diagnosis in terms of extensibility, performance,and scalability show that the semantic Web based self-management approach is effective to achieve the self-diagnosis goals...

  4. Design and Implementation of Highway Management System Based WebGIS

    Directory of Open Access Journals (Sweden)

    Feng Xie

    2010-12-01

    Full Text Available Network Geographic Information System is a GIS based on Web technical standards and communication protocol of network , a product of Web technology and GIS technology, it is based on Internet / Intranet to provide users with information distributed in space, data sharing, exchange and cooperation. WebGIS make full use of network resources, a large scale to reduce costs and complexity of dealing with the implementation of the server, the client is simple, is an ideal global optimization model, replace a desktop GIS system, and provide personalized service.Based on WebGIS for the new technology platform, the highway pavement management system designs and builds roads spatial database and attribute database. The system uses dynamic segmentation technology to link road geographic information and attribute information. The system could process pavement condition evaluation and forecast by model, the decision support subsystems with analysis and decision-making. Through the establishment of highway pavement management system based on WebGIS, it is to achieve highway management scientific and effective network, it will greatly enhance the efficiency of highway management it is effective management tool to resolve the contradiction between the rapid growth of the highway and the pavement maintenance. It will provide timely and accurate decision support information.

  5. Security transfer of Web password based on dynamic soft keyboard and random code%基于动态软键盘和随机码的Web口令安全传输

    Institute of Scientific and Technical Information of China (English)

    戚湧; 高双双; 李千目

    2014-01-01

    在无线网络中,为防止用户口令被窃取,提出一种Web口令安全传输方法。在Web门户中显示局部动态软键盘,同时加入随机码,通过消息摘要算法( MD5)将用户口令与随机码进行加密,然后发送。实验结果证明:该方法可以防止黑客通过接入点截获用户口令、重放攻击和暴力破解;与已有Web口令安全传输方法相比,计算复杂度低,效率、安全性和可信度高;可以有效防止终端攻击和网络攻击。%In wireless networks, a Web password security transfer method is put forward to prevent user passwords from being stolen. In a Web portal,a local dynamic soft keyboard is showed,and a random code is added, then the user password and random code are encrypted by message digest algorithm(MD5) and sent. Experimental results prove that:the method proposed here can prevent hacker from intercepting user passwords through access points(AP),replay attacks and brute force attacks;compared with the existing Web password security transfer methods, the method proposed here has the advantages of low computation complexity,high efficiency,security and reliability and can prevent terminal attacks and network attacks.

  6. Establishing a Web-based DICOM teaching file authoring tool using open-source public software.

    Science.gov (United States)

    Lee, Wen-Jeng; Yang, Chung-Yi; Liu, Kao-Lang; Liu, Hon-Man; Ching, Yu-Tai; Chen, Shyh-Jye

    2005-09-01

    Online teaching files are an important source of educational and referential materials in the radiology community. The commonly used Digital Imaging and Communications in Medicine (DICOM) file format of the radiology community is not natively supported by common Web browsers. The ability of the Web server to convert and parse DICOM is important when the DICOM-converting tools are not available. In this paper, we describe our approach to develop a Web-based teaching file authoring tool. Our server is built using Apache Web server running on FreeBSD operating system. The dynamic page content is produced by Hypertext Preprocessor (PHP). Digital Imaging and Communications in Medicine images are converted by ImageMagick into Joint Photographic Experts Group (JPEG) format. Digital Imaging and Communications in Medicine attributes are parsed by dicom3tools and stored in PostgreSQL database. Using free software available from the Internet, we build a Web service that allows radiologists to create their own online teaching file cases with a common Web browser. PMID:15924271

  7. Experimenting with an Evolving Ground/Space-based Software Architecture to Enable Sensor Webs

    Science.gov (United States)

    mandl, Daniel; Frye, Stuart

    2005-01-01

    A series of ongoing experiments are being conducted at the NASA Goddard Space Flight Center to explore integrated ground and space-based software architectures enabling sensor webs. A sensor web, as defined by Steve Talabac at NASA Goddard Space Flight Center(GSFC), is a coherent set of distributed nodes interconnected by a communications fabric, that collectively behave as a single, dynamically adaptive, observing system. The nodes can be comprised of satellites, ground instruments, computing nodes etc. Sensor web capability requires autonomous management of constellation resources. This becomes progressively more important as more and more satellites share resource, such as communication channels and ground station,s while automatically coordinating their activities. There have been five ongoing activities which include an effort to standardize a set of middleware. This paper will describe one set of activities using the Earth Observing 1 satellite, which used a variety of ground and flight software along with other satellites and ground sensors to prototype a sensor web. This activity allowed us to explore where the difficulties that occur in the assembly of sensor webs given today s technology. We will present an overview of the software system architecture, some key experiments and lessons learned to facilitate better sensor webs in the future.

  8. Improvements to Web Toolkits for Antelope-based Real-time Monitoring Systems

    Science.gov (United States)

    Lindquist, K. G.; Newman, R. L.; Vernon, F. L.; Hansen, T. S.; Orcutt, J.

    2005-12-01

    The Antelope Environmental Monitoring System (http://www.brtt.com) is a robust middleware architecture for near-real-time data collection, analysis, archiving and distribution. Antelope has an extensive toolkit allowing users to interact directly with their datasets. A rudimentary interface was developed in previous work between Antelope and the web-scripting language PHP (The PHP language is described in more detail at http://www.php.net). This interface allowed basic application development for remote access to and interaction with near-real-time data through a World Wide Web interface. We have added over 70 new functions for the Antelope interface to PHP, providing a solid base for web-scripting of near-real-time Antelope database applications. In addition, we have designed a new structure for web sites to be created from the Antelope platform, including PHP applications and Perl CGI scripts as well as static pages. Finally we have constructed the first version of the dbwebproject program, designed to dynamically create and maintain web-sites from specified recipes. These tools have already proven valuable for the creation of web tools for the dissemination of and interaction with near-real-time data streams from multi-signal-domain real-time sensor networks. We discuss current and future directions of this work in the context of the ROADNet project. Examples and applications of these core tools are elaborated in a companion presentation in this session (Newman et al., AGU 2005, session IN06).

  9. Geo-communication and Web-based Spatial Data Infrastructure

    DEFF Research Database (Denmark)

    Brodersen, Lars; Nielsen, Anders

    2006-01-01

    The purpose of geo-communication is to bridge the gap between reality and data sources on one side and decisions on the other side. This is achieved through several types of activities, where web-services and spatial data infrastructure play an important role. The introduction of web-services as ......The purpose of geo-communication is to bridge the gap between reality and data sources on one side and decisions on the other side. This is achieved through several types of activities, where web-services and spatial data infrastructure play an important role. The introduction of web......-services. This paper discusses the relations between the different components of SDI and geo-communication as well as the impacts thereof. Discussed is also a model for the organization of the passive components of the infrastructure; i.e. legislation, collaboration, standards, models, specifications, web......-services and finally the information. Awareness of the complexity is necessary, and structure is needed to make it possible for the geo-information community to pull together in the same direction. Modern web-based geo-communication and its infrastructure looks very complex, and it will get even more complex...

  10. Web Entities Extraction Based on Semi-Structured Semantic Database

    Directory of Open Access Journals (Sweden)

    Fang Dong

    2013-07-01

    Full Text Available Web is the biggest source of information and contains many entities and relationships between them, extracting these data from Massive Web pages and Integrating to a Semi-Structured Data with rich semantics will be more conducive to the management and use of these web data. On this premise, a comprehensive method is proposed to perform extraction the entities and relationships from the webpages. The method consists of two steps: 1 The target Web pages which contains these entities will be found based on the combination of vision information and content of keyword, meanwhile recording the relationship between father and children target Web pages; 2 Extracting the entities with analysis of DOM tree structure of the obtained Web pages and definitions of some extraction rules. At last, the extracted data is organized into a Semi-Structured Data with special relationships. Experiments on a large number of HTML pages have showed that this method can get a high correct rate and coverage.

  11. A web based Publish-Subscribe framework for mobile computing

    Directory of Open Access Journals (Sweden)

    Cosmina Ivan

    2014-05-01

    Full Text Available The growing popularity of mobile devices is permanently changing the Internet user’s computing experience. Smartphones and tablets begin to replace the desktop as the primary means of interacting with various information technology and web resources. While mobile devices facilitate in consuming web resources in the form of web services, the growing demand for consuming services on mobile device is introducing a complex ecosystem in the mobile environment. This research addresses the communication challenges involved in mobile distributed networks and proposes an event-driven communication approach for information dissemination. This research investigates different communication techniques such as polling, long-polling and server-side push as client-server interaction mechanisms and the latest web technologies standard WebSocket , as communication protocol within a Publish/Subscribe paradigm. Finally, this paper introduces and evaluates the proposed framework, that is a hybrid approach of WebSocket and event-based publish/subscribe for operating in mobile environments.

  12. A Web-Based Operating Room Management Educational Tool.

    Science.gov (United States)

    Tsai, Mitchell H; Haddad, Daniel J; Friend, Alexander F; Bender, S Patrick; Davidson, Melissa L

    2016-08-01

    In 2010, our department instituted a nonclinical, administrative rotation in operating room management for anesthesiology residents. Subsequently, we mandated the rotation for all senior anesthesiology residents in 2013. In 2014, under the auspices of the American Society of Anesthesiologists, we developed a web-based module covering the basics of finance, accounting, and operating room management. A multiple-choice test was given to residents at the beginning and end of the rotation, and we compared the mean scores between residents who took the traditional course and residents who took the web-based module. We found no significant difference between the groups of residents, suggesting that the web-based module is as effective as traditional didactics. PMID:27258181

  13. A Web-Based Operating Room Management Educational Tool.

    Science.gov (United States)

    Tsai, Mitchell H; Haddad, Daniel J; Friend, Alexander F; Bender, S Patrick; Davidson, Melissa L

    2016-08-01

    In 2010, our department instituted a nonclinical, administrative rotation in operating room management for anesthesiology residents. Subsequently, we mandated the rotation for all senior anesthesiology residents in 2013. In 2014, under the auspices of the American Society of Anesthesiologists, we developed a web-based module covering the basics of finance, accounting, and operating room management. A multiple-choice test was given to residents at the beginning and end of the rotation, and we compared the mean scores between residents who took the traditional course and residents who took the web-based module. We found no significant difference between the groups of residents, suggesting that the web-based module is as effective as traditional didactics.

  14. Web Pre-fetching Model Based on Concept Association Network

    Institute of Scientific and Technical Information of China (English)

    XUHuanqing; WANGYongcheng

    2004-01-01

    With the enormous growth of information on the web, Internet has become one of the most important information sources. However, limited by the network bandwidth, users always suffer from long time waiting. Web pre-fetching is one of the most popular strategies,which are proposed for reducing the perceived access delay and improving the service quality of web server. This paper presents a pre-fetching model based on concept as sociation network, which mines concept association relationships that are implied in user access patterns and employs online learning and oitiine mining algorithm to construct the user-oriented concept association network. Using concept association network, pre-fetching model makes semantics-based pre-fetching decisions in the client side.This model implements the concept-based analysis on user access patterns and improves the prediction accuracy. Experimental results show that the proposed pre-fetching model has better general performance.

  15. The Web Application Test Based on Page Coverage Criteria

    Institute of Scientific and Technical Information of China (English)

    CAI Li-zhi; TONG Wei-qin; YANG Gen-xing

    2008-01-01

    Software testing coverage criteria play an important role in the whole testing process. The current coverage criteria for web applications are based on program or URL. They are not suitable for black-box test or intuitional to use. This paper defines a kind of test criteria based on page coverage sequences only navigated by web application, including Page_Single, Page_Post, Page_Pre,Page_Seq2, Page_SeqK. The test criteria based on page coverage sequences made by interactions between web application and browser are being under consideration after that. In order to avoid ambiguity of natural language, these coverage criteria are depicted using Z formal language. The empirical result shows that the criteria complement traditional coverage and fault detection capability criteria.

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

    Directory of Open Access Journals (Sweden)

    Mofreh Hogo

    2009-12-01

    Full Text Available Internet and expert systems have offered new ways of sharing and distributing knowledge, but there is a lack of researches in the area of web-based expert systems. This paper introduces a development of a web-based expert system for the regulations of civil service in the Kingdom of Saudi Arabia named as RCSES. It is the first time to develop such system (application of civil service regulations as well the development of it using web-based approach. The proposed system considers 17 regulations of the civil service system. The different phases of developing the RCSES system are presented, as knowledge acquiring and selection, ontology and knowledge representations using XML format. XML-Rule-based knowledge sources and the inference mechanisms were implemented using ASP.net technique. An interactive tool for entering the ontology and knowledge base, and the inferencing was built. It gives the ability to use, modify, update, and extend the existing knowledge base in an easy way. The knowledge was validated by experts in the domain of civil service regulations, and the proposed RCSES was tested, verified, and validated by different technical users and the developers’ staff. The RCSES system is compared with other related web based expert systems, that comparison proved the goodness, usability, and high performance of RCSES.Keywords- Knowledge base; Ontology; RCSES; and Civil regulation;

  17. Customizability of visualizations in web-based learning systems

    OpenAIRE

    Díaz, Francisco Javier; Steinmetz, Ralf; El Saddik, Abdulmotaleb

    2000-01-01

    In this article, we discuss the usability and customizability issues of interactive animations and simulations in web-based learning systems. The approach presented here extended our component-based architecture to build up interactive multimedia visualization units by the use of metadata.

  18. Research Issues of Motivation in Web-based Instruction.

    Science.gov (United States)

    Song, Sang Ho

    2000-01-01

    Suggests research issues of motivation in Web-based instruction (WBI). Discusses motivational issues of WBI. Proposes a definition of motivation in WBI (based on Keller's ARCS Model). Conceptualizes three types of motivation (motivation to initiate, motivation to persist, motivation to continue), with motivational problems related to each.…

  19. An Enhanced Intrusion Detection System for Multitier Dynamic Web Applications

    Directory of Open Access Journals (Sweden)

    S.Sasireka

    2014-05-01

    Full Text Available We present an efficient approach, a system used to detect attacks in multitiered web services and classify through Hierarchal clustering Algorithm. Our approach can create normality models of isolated user sessions that include both the web front-end (HTTP and back-end (File or SQL network transactions with respect to Data volumes and Classify them. Implements a lightweight virtualization technique to assign each user’s web session to a dedicated container, an isolated virtual computing environment. We use the cluster algorithm to accurately associate the web request with the subsequent DB queries. DoubleGuard can build a causal mapping profile by taking both the webserver and DB traffic into account. Internet services and applications have become an inextricable part of daily life, enabling communication and the management of personal information from anywhere. To accommodate this increase in application and data complexity, web services have moved to a multitiered design wherein the webserver runs the application front-end logic and data are outsourced to a database or file server. In this paper, we present DoubleGuard, an IDS system that models the network behavior of user sessions across both the front-end webserver and the back-end database. By monitoring both web and subsequent database requests, we are able to ferret out attacks that an independent IDS would not be able to identify. Furthermore, we quantify the limitations of any multitier IDS in terms of training sessions and functionality coverage. We implemented DoubleGuard using an Apache webserver with MySQL and lightweight virtualization.

  20. OneWeb: plataforma de adaptación de contenidos web basada en las recomendaciones del W3C Mobile Web Initiative OneWeb: web content adaptation platform based on W3C Mobile Web Initiative guidelines

    Directory of Open Access Journals (Sweden)

    Mosquera P. Fabián L.

    2011-05-01

    and presentation of mobile Web interfaces. This article presents the main features and functional modules of OneWeb, an MWI-based Web content adaptation platform developed by Mobile Devices Applications Development Interest Group’s  (W@PColombia research activities, forming part of the Universidad de Cauca’s Telematics Engineering Group.Some performance measurementresults and comparison with other Web content adaptation platforms are presented. Tests have shown suitable response times for Mobile Web environments; MWI guidelines were applied to over twenty Web pages selected for testing purposes.

     

  1. Cost reduction for web-based data imputation

    KAUST Repository

    Li, Zhixu

    2014-01-01

    Web-based Data Imputation enables the completion of incomplete data sets by retrieving absent field values from the Web. In particular, complete fields can be used as keywords in imputation queries for absent fields. However, due to the ambiguity of these keywords and the data complexity on the Web, different queries may retrieve different answers to the same absent field value. To decide the most probable right answer to each absent filed value, existing method issues quite a few available imputation queries for each absent value, and then vote on deciding the most probable right answer. As a result, we have to issue a large number of imputation queries for filling all absent values in an incomplete data set, which brings a large overhead. In this paper, we work on reducing the cost of Web-based Data Imputation in two aspects: First, we propose a query execution scheme which can secure the most probable right answer to an absent field value by issuing as few imputation queries as possible. Second, we recognize and prune queries that probably will fail to return any answers a priori. Our extensive experimental evaluation shows that our proposed techniques substantially reduce the cost of Web-based Imputation without hurting its high imputation accuracy. © 2014 Springer International Publishing Switzerland.

  2. Architecture for web-based image processing

    Science.gov (United States)

    Srini, Vason P.; Pini, David; Armstrong, Matt D.; Alalusi, Sayf H.; Thendean, John; Ueng, Sain-Zee; Bushong, David P.; Borowski, Erek S.; Chao, Elaine; Rabaey, Jan M.

    1997-09-01

    A computer systems architecture for processing medical images and other data coming over the Web is proposed. The architecture comprises a Java engine for communicating images over the Internet, storing data in local memory, doing floating point calculations, and a coprocessor MIMD parallel DSP for doing fine-grained operations found in video, graphics, and image processing applications. The local memory is shared between the Java engine and the parallel DSP. Data coming from the Web is stored in the local memory. This approach avoids the frequent movement of image data between a host processor's memory and an image processor's memory, found in many image processing systems. A low-power and high performance parallel DSP architecture containing lots of processors interconnected by a segmented hierarchical network has been developed. The instruction set of the 16-bit processor supports video, graphics, and image processing calculations. Two's complement arithmetic, saturation arithmetic, and packed instructions are supported. Higher data precision such as 32-bit and 64-bit can be achieved by cascading processors. A VLSI chip implementation of the architecture containing 64 processors organized in 16 clusters and interconnected by a statically programmable hierarchical bus is in progress. The buses are segmentable by programming switches on the bus. The instruction memory of each processor has sixteen 40-bit words. Data streaming through the processor is manipulated by the instructions. Multiple operations can be performed in a single cycle in a processor. A low-power handshake protocol is used for synchronization between the sender and the receiver of data. Temporary storage for data and filter coefficients is provided in each chip. A 256 by 16 memory unit is included in each of the 16 clusters. The memory unit can be used as a delay line, FIFO, lookup table or random access memory. The architecture is scalable with technology. Portable multimedia terminals like U

  3. Web-Based Monitoring of Multiple Payload Missions

    Science.gov (United States)

    Rexroad, W. Z.; Smith, D. M.; Millan, R. M.

    2012-12-01

    The Balloon Array for RBSP Relativistic Electron Losses (BARREL), part of NASA's Living With a Star Program, will provide low altitude detection of electron loss events to be used in conjunction with measurements from spacecraft such as NASA's Radiation Belt Storm Probes (RBSP). BARREL team members located at universities distributed across the US require a remote, real-time telemetry monitoring system. The BARREL Science Operations Center (SOC) was created to fulfill this need by quickly processing incoming data and making it available through a number of web-based tools. This gives any user, regardless of location, the ability to view live telemetry data for all balloons in the array, generate strip charts with a variety of plotting options, produce dynamic flight maps, monitor payload health and alerts, and download ASCII data files by date. All tools are written in HTML5/JavaScript so no special software is required, allowing everything to be accessed using a computer or device with a modern browser. Presented here are the design requirements, features, and implementation results that may be of use to someone creating a remote telemetry monitoring system for multiple payloads.

  4. Structure and dynamics of Lithocolletis ringoniella-Parasitoids food web in apple orchards of Shaanxi, China

    Directory of Open Access Journals (Sweden)

    Xin Li

    2014-09-01

    Full Text Available The formation and evolution of food web is a self-organizing process. A food web, L. ringoniella-Parasitoids food web, was proposed in present study. With the apple pest Lithocolletis ringoniella as the basic host, four parasitoids, Apanteles theivorae, Sympiesis sericeicornis, Ageniaspis testaceipes, and Sympiesis Foerst are included in the food web. In this food web, A. theivorae and A. testaceipes are primary parasitoids of L. ringoniella. A. theivorae mainly parasitizes apodous larva of L. ringoniella while A. testaceipes only chooses L. ringoniella egg to parasitize (egg-larva endoparasitization. S. Foerst and S. sericeicornis are facultative hyper-parasitoids. They can parasitize not only the larvae and pupae of L. ringoniella, but also A. theivorae. S. sericeicornis can be hyper-parasitized by S. Foerst. The occurrence mechanism and population dynamics of L. ringoniella and parasitoids, and parasitization effect of parasitoids in apple orchards of Shaanxi, China, were described in detail.

  5. The Spider's Web: Creativity and Survival in Dynamic Balance.

    Science.gov (United States)

    Cohen, Bill

    2001-01-01

    The spider's web is presented as a model for Indigenous education and community transformation, grounded in Okanagan philosophy. Children are at the center and benefit from the influence of extended family and community. The model's relevance for language revitalization, cultural maintenance, and educational planning and assessment is discussed.…

  6. PHISHING WEB IMAGE SEGMENTATION BASED ON IMPROVING SPECTRAL CLUSTERING

    Institute of Scientific and Technical Information of China (English)

    Li Yuancheng; Zhao Liujun; Jiao Runhai

    2011-01-01

    Abstract This paper proposes a novel phishing web image segmentation algorithm which based on improving spectral clustering.Firstly,we construct a set of points which are composed of spatial location pixels and gray levels from a given image.Secondly,the data is clustered in spectral space of the similar matrix of the set points,in order to avoid the drawbacks of K-means algorithm in the conventional spectral clustering method that is sensitive to initial clustering centroids and convergence to local optimal solution,we introduce the clone operator,Cauthy mutation to enlarge the scale of clustering centers,quantum-inspired evolutionary algorithm to find the global optimal clustering centroids.Compared with phishing web image segmentation based on K-means,experimental results show that the segmentation performance of our method gains much improvement.Moreover,our method can convergence to global optimal solution and is better in accuracy of phishing web segmentation.

  7. Personalized Web Search Using Trust Based Hubs And Authorities

    Directory of Open Access Journals (Sweden)

    Dr. Suruchi Chawla

    2014-07-01

    Full Text Available In this paper method has been proposed to improve the precision of Personalized Web Search (PWS using Trust based Hubs and Authorities(HA where Hubs are the high quality resource pages and Authorities are the high quality content pages in the specific topic generated using Hyperlink- Induced Topic Search (HITS. The Trust is used in HITS for increasing the reliability of HITS in identifying the good hubs and authorities for effective web search and overcome the problem of topic drift found in HITS. Experimental Study was conducted on the data set of web query sessions to test the effectiveness of PWS with Trust based HA in domains Academics, Entertainment and Sport. The experimental results were compared on the basis of improvement in average precision using PWS with HA (with/without Trust. The results verified statistically show the significant improvement in precision using PWS with HA (with Trust.

  8. Web-Based Learning and Training for Virtual Metrology Lab

    CERN Document Server

    Al-Zahrani, Fahad

    2010-01-01

    The use of World Web Wide for distance education has received increasing attention over the past decades. The real challenge of adapting this technology for engineering education and training is to facilitate the laboratory experiments via Internet. In the sciences, measurement plays an important role. The accuracy of the measurement, as well as the units, help scientists to better understand phenomena occurring in nature. This paper introduces Metrology educators to the use and adoption of Java-applets in order to create virtual, online Metrology laboratories for students. These techniques have been used to successfully form a laboratory course which augments the more conventional lectures in concepts of Metrology course at Faculty of Engineering, Albaha University, KSA. Improvements of the package are still undergoing to incorporate Web-based technologies (Internet home page, HTML, Java programming etc...). This Web-based education and training has been successfully class-tested within an undergraduate prel...

  9. Web-based healthcare hand drawing management system.

    Science.gov (United States)

    Hsieh, Sheau-Ling; Weng, Yung-Ching; Chen, Chi-Huang; Hsu, Kai-Ping; Lin, Jeng-Wei; Lai, Feipei

    2010-01-01

    The paper addresses Medical Hand Drawing Management System architecture and implementation. In the system, we developed four modules: hand drawing management module; patient medical records query module; hand drawing editing and upload module; hand drawing query module. The system adapts windows-based applications and encompasses web pages by ASP.NET hosting mechanism under web services platforms. The hand drawings implemented as files are stored in a FTP server. The file names with associated data, e.g. patient identification, drawing physician, access rights, etc. are reposited in a database. The modules can be conveniently embedded, integrated into any system. Therefore, the system possesses the hand drawing features to support daily medical operations, effectively improve healthcare qualities as well. Moreover, the system includes the printing capability to achieve a complete, computerized medical document process. In summary, the system allows web-based applications to facilitate the graphic processes for healthcare operations.

  10. 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.

  11. Conception and Development of a Dynamic Web Site: Dedicated to a University Library

    Directory of Open Access Journals (Sweden)

    Safia N. Bahloul

    2005-01-01

    Full Text Available The world wide web is a group of web pages related between them with hypertext links. That forms a huge and complex web mail. A single click allow us to surf from document to another. From each document we can refer to different types of information: text, sound, video. In most cases, first sites were static, their principal aim were suggesting products and services. In the opposite, the web pages feed actually more opportunities to make dynamic contacts with users, with allowing data exchanges : from and to both sides (server and client.To establish this practices, distinct environment and tools were developed such as: Script languages, Database servers, …etc. A Part of this paper study a practical case, which is: Dynamic conception of university library site, with explaining different tools and environment incorporate

  12. The web of connections between tourism companies: Structure and dynamics

    Science.gov (United States)

    da Fontoura Costa, Luciano; Baggio, Rodolfo

    2009-10-01

    Tourism destination networks are amongst the most complex dynamical systems, involving a myriad of human-made and natural resources. In this work we report a complex network-based systematic analysis of the Elba (Italy) tourism destination network, including the characterization of its structure in terms of several traditional measurements, the investigation of its modularity, as well as its comprehensive study in terms of the recently reported superedges approach. In particular, structural (the number of paths of distinct lengths between pairs of nodes, as well as the number of reachable companies) and dynamical features (transition probabilities and the inward/outward activations and accessibilities) are measured and analyzed, leading to a series of important findings related to the interactions between tourism companies. Among the several reported results, it is shown that the type and size of the companies influence strongly their respective activations and accessibilities, while their geographical position does not seem to matter. It is also shown that the Elba tourism network is largely fragmented and heterogeneous, so that it could benefit from increased integration.

  13. Web application development with Zope

    OpenAIRE

    Cerjak, Jure

    2010-01-01

    A web application framework is designed to support the development of dynamic websites, Web applications and Web services. There are many already established platforms to choose from. Recent years have witnessed an increasing number of web application frameworks based on dynamic programming languages such as Python and Ruby. In my thesis I presented Zope, which is relatively unknown among developers despite the maturity of the platform and the fact that it offers some interesting features...

  14. Performance Analysis of Vision-Based Deep Web Data Extraction for Web Document Clustering

    OpenAIRE

    M.Lavanya; Usha Rani

    2013-01-01

    Web Data Extraction is a critical task by applying various scientific tools and in a broad range of application domains. To extract data from multiple web sites are becoming more obscure, as well to design of web information extraction systems becomes more complex and time-consuming. We also present in this paper so far various risks in web data extraction. Identifying data region from web is a noteworthy crisis for information extraction from the web page. In this paper, performance of visio...

  15. Learning Tools for Knowledge Nomads: Using Personal Digital Assistants (PDAs) in Web-based Learning Environments.

    Science.gov (United States)

    Loh, Christian Sebastian

    2001-01-01

    Examines how mobile computers, or personal digital assistants (PDAs), can be used in a Web-based learning environment. Topics include wireless networks on college campuses; online learning; Web-based learning technologies; synchronous and asynchronous communication via the Web; content resources; Web connections; and collaborative learning. (LRW)

  16. Development of Web-Based Menu Planning Support System and its Solution Using Genetic Algorithm

    Science.gov (United States)

    Kashima, Tomoko; Matsumoto, Shimpei; Ishii, Hiroaki

    2009-10-01

    Recently lifestyle-related diseases have become an object of public concern, while at the same time people are being more health conscious. As an essential factor for causing the lifestyle-related diseases, we assume that the knowledge circulation on dietary habits is still insufficient. This paper focuses on everyday meals close to our life and proposes a well-balanced menu planning system as a preventive measure of lifestyle-related diseases. The system is developed by using a Web-based frontend and it provides multi-user services and menu information sharing capabilities like social networking services (SNS). The system is implemented on a Web server running Apache (HTTP server software), MySQL (database management system), and PHP (scripting language for dynamic Web pages). For the menu planning, a genetic algorithm is applied by understanding this problem as multidimensional 0-1 integer programming.

  17. WebDASC: a web-based dietary assessment software for 8-11-year-old Danish children

    DEFF Research Database (Denmark)

    Biltoft-Jensen, Anja Pia; Trolle, Ellen; Christensen, Tue;

    Background:  The present study describes the development and formative evaluation of the Web-based Dietary Assessment Software for Children (WebDASC). WebDASC is part of the OPUS project ('Optimal well-being, development and health for Danish children through a healthy New Nordic Diet') and was i......Background:  The present study describes the development and formative evaluation of the Web-based Dietary Assessment Software for Children (WebDASC). WebDASC is part of the OPUS project ('Optimal well-being, development and health for Danish children through a healthy New Nordic Diet...... food items is available either through category browse or free text search, aided by a spell check application. A type-in format is available for foods not otherwise found through category browse or text search. Amount consumed is estimated by selecting the closest portion size among four different...

  18. Design and implementatin of web based supply centers material request and tracking (SMART) system using with Java and Java servlets

    OpenAIRE

    Ciftci, Cemalettin.

    2001-01-01

    In order for decision makers to efficiently make accurate decisions, pertinent information must be accessed easily and quickly. Component based architectures are suitable for creating today's three-tiered client-server systems. Experts in each particular field can develop each tier independently. The first tier can be built using HTML and web browsers. The middle tier can be implemented by using existing server side programming technologies that enable dynamic web page creation. The third tie...

  19. Web-based Factors Affecting Online Purchasing Behaviour

    International Nuclear Information System (INIS)

    The growing use of internet and online purchasing among young consumers in Malaysia provides a huge prospect in e-commerce market, specifically for B2C segment. In this market, if E-marketers know the web-based factors affecting online buyers' behaviour, and the effect of these factors on behaviour of online consumers, then they can develop their marketing strategies to convert potential customers into active one, while retaining existing online customers. Review of previous studies related to the online purchasing behaviour in B2C market has point out that the conceptualization and empirical validation of the online purchasing behaviour of Information and Communication Technology (ICT) literate users, or ICT professional, in Malaysia has not been clearly addressed. This paper focuses on (i) web-based factors which online buyers (ICT professional) keep in mind while shopping online; and (ii) the effect of web-based factors on online purchasing behaviour. Based on the extensive literature review, a conceptual framework of 24 items of five factors was constructed to determine web-based factors affecting online purchasing behaviour of ICT professional. Analysis of data was performed based on the 310 questionnaires, which were collected using a stratified random sampling method, from ICT undergraduate students in a public university in Malaysia. The Exploratory factor analysis performed showed that five factors affecting online purchase behaviour are Information Quality, Fulfilment/Reliability/Customer Service, Website Design, Quick and Details, and Privacy/Security. The result of Multiple Regression Analysis indicated that Information Quality, Quick and Details, and Privacy/Security affect positively online purchase behaviour. The results provide a usable model for measuring web-based factors affecting buyers' online purchase behaviour in B2C market, as well as for online shopping companies to focus on the factors that will increase customers' online purchase.

  20. Web-based Factors Affecting Online Purchasing Behaviour

    Science.gov (United States)

    Ariff, Mohd Shoki Md; Sze Yan, Ng; Zakuan, Norhayati; Zaidi Bahari, Ahamad; Jusoh, Ahmad

    2013-06-01

    The growing use of internet and online purchasing among young consumers in Malaysia provides a huge prospect in e-commerce market, specifically for B2C segment. In this market, if E-marketers know the web-based factors affecting online buyers' behaviour, and the effect of these factors on behaviour of online consumers, then they can develop their marketing strategies to convert potential customers into active one, while retaining existing online customers. Review of previous studies related to the online purchasing behaviour in B2C market has point out that the conceptualization and empirical validation of the online purchasing behaviour of Information and Communication Technology (ICT) literate users, or ICT professional, in Malaysia has not been clearly addressed. This paper focuses on (i) web-based factors which online buyers (ICT professional) keep in mind while shopping online; and (ii) the effect of web-based factors on online purchasing behaviour. Based on the extensive literature review, a conceptual framework of 24 items of five factors was constructed to determine web-based factors affecting online purchasing behaviour of ICT professional. Analysis of data was performed based on the 310 questionnaires, which were collected using a stratified random sampling method, from ICT undergraduate students in a public university in Malaysia. The Exploratory factor analysis performed showed that five factors affecting online purchase behaviour are Information Quality, Fulfilment/Reliability/Customer Service, Website Design, Quick and Details, and Privacy/Security. The result of Multiple Regression Analysis indicated that Information Quality, Quick and Details, and Privacy/Security affect positively online purchase behaviour. The results provide a usable model for measuring web-based factors affecting buyers' online purchase behaviour in B2C market, as well as for online shopping companies to focus on the factors that will increase customers' online purchase.

  1. Students' Satisfaction and Perceived Learning with a Web-based Course

    Directory of Open Access Journals (Sweden)

    Derek Holton

    2003-01-01

    Full Text Available This paper describes a study, which explored students' responses and reactions to a Web-based tertiary statistics course supporting problem-based learning. The study was undertaken among postgraduate students in a Malaysian university. The findings revealed that the majority of the students were satisfied with their learning experience and achieved comparable learning outcomes to students in the face-to-face version of the course. Students appreciated the flexibility of anytime, anywhere learning. The majority of the students was motivated to learn and had adequate technical support to complete the course. Improvement in computer skills was an incidental learning outcome from the course. The student-student and student-teacher communication was satisfactory but a few students felt isolated learning in the Web environment. These students expressed a need for some face-to-face lectures. While the majority of the students saw value in learning in a problem-based setting, around a third of the students expressed no opinion on, or were dissatisfied with, the problem-based environment. They were satisfied with the group facilitators and learning materials but were unhappy with the group dynamics. Some of the students felt unable to contribute to or learn from the asynchronous Web-based conferences using problem-based approach. Some of the students were not punctual and were not prepared to take part in the Web-based conferences. The findings have suggested a need to explicitly design an organising strategy in the asynchronous Web-based conferences using problem-based approach to aid students in completing the problem-based learning process.

  2. Dynamics of pairwise motions in the Cosmic Web

    CERN Document Server

    Hellwing, Wojciech A

    2014-01-01

    We present results of analysis of the dark matter (DM) pairwise velocity statistics in different Cosmic Web environments. We use the DM velocity and density field from the Millennium 2 simulation together with the NEXUS+ algorithm to segment the simulation volume into voxels uniquely identifying one of the four possible environments: nodes, filaments, walls or cosmic voids. We show that the PDFs of the mean infall velocities $v_{12}$ as well as its spatial dependence together with the perpendicular and parallel velocity dispersions bear a significant signal of the large-scale structure environment in which DM particle pairs are embedded. The pairwise flows are notably colder and have smaller mean magnitude in wall and voids, when compared to much denser environments of filaments and nodes. We discuss on our results, indicating that they are consistent with a simple theoretical predictions for pairwise motions as induced by gravitational instability mechanism. Our results indicate that the Cosmic Web elements ...

  3. Geo-communication and web-based geospatial infrastructure

    DEFF Research Database (Denmark)

    Brodersen, Lars; Nielsen, Anders

    2005-01-01

    The introduction of web-services as index-portals based on geoinformation has changed the conditions for both content and form of geocommunication. A high number of players and interactions (as well as a very high number of all kinds of information and combinations of these) characterize web-serv...... is that there no longer is a given relation between producer and end user, as it was the case in the 'good old days' when maps were maps. A third aspect of the new way of modelling is the distinction between active and passive components in the infrastructure....

  4. Web-based software system for processing bilingual digital resources

    Directory of Open Access Journals (Sweden)

    Ralitsa Dutsova

    2014-09-01

    Full Text Available Web-based software system for processing bilingual digital resourcesThe article describes a software management system developed at the Institute of Mathematics and Informatics, BAS, for the creation, storing and processing of digital language resources in Bulgarian. Independent components of the system are intended for the creation and management of bilingual dictionaries, for information retrieval and data mining from a bilingual dictionary, and for the presentation of aligned corpora. A module which connects these components is also being developed. The system, implemented as a web-application, contains tools for compilation, editing and search within all components.

  5. PV-WEB: internet-based PV information tool

    Energy Technology Data Exchange (ETDEWEB)

    Cowley, P.

    2003-07-01

    This report gives details of a project to create a web-based information system on photovoltaic (PV) systems for the British PV Association (PV-UK) for use by decision makers in government, the utilities, and the housing and construction sectors. The project, which aims to provide an easily accessible tool for UK companies, promote PV technology, increase competitiveness, and identify market opportunities, is described. The design of the web site and its implementation and the evolution are discussed, along with the maintenance of the site by PV-UK and the opportunities offered to PV-UK Members.

  6. PV-WEB: internet-based PV information tool

    International Nuclear Information System (INIS)

    This report gives details of a project to create a web-based information system on photovoltaic (PV) systems for the British PV Association (PV-UK) for use by decision makers in government, the utilities, and the housing and construction sectors. The project, which aims to provide an easily accessible tool for UK companies, promote PV technology, increase competitiveness, and identify market opportunities, is described. The design of the web site and its implementation and the evolution are discussed, along with the maintenance of the site by PV-UK and the opportunities offered to PV-UK Members

  7. Reinforcement Learning Based Web Service Compositions for Mobile Business

    Science.gov (United States)

    Zhou, Juan; Chen, Shouming

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

  8. DEFEASIBLE REASONING IN WEB-BASED FORMS THROUGH ARGUMENTATION

    OpenAIRE

    SERGIO ALEJANDRO GÓMEZ; CARLOS IVÁN CHESÑEVAR; GUILLERMO RICARDO SIMARI

    2008-01-01

    The notion of forms as a way of organizing and presenting data has been used since the beginning of the World Wide Web. Web-based forms have evolved together with the development of new markup languages, in which it is possible to provide validation scripts as part of the form code to test whether the intended meaning of the form is correct. However, for the form designer, part of this intended meaning frequently involves other features which are not constraints by themselves, but rather attr...

  9. Adolescents' Web-Based Literacies, Identity Construction, and Skill Development

    Science.gov (United States)

    Alvermann, Donna E.; Marshall, James D.; McLean, Cheryl A.; Huddleston, Andrew P.; Joaquin, Jairus; Bishop, John

    2012-01-01

    Five qualitative multiple-case studies document adolescents' uses of Web-based resources and digital literacy skills to construct their online identities. Working from a perspective that integrates new literacies with multimodality, the researchers enlisted the help of five high school students who kept daily logs of the websites they visited for…

  10. Web-Based Trainer for Electrical Circuit Analysis

    Science.gov (United States)

    Weyten, L.; Rombouts, P.; De Maeyer, J.

    2009-01-01

    A Web-based system for training electric circuit analysis is presented in this paper. It is centered on symbolic analysis techniques and it not only verifies the student's final answer, but it also tracks and coaches him/her through all steps of his/her reasoning path. The system mimics homework assignments, enhanced by immediate personalized…

  11. The Hebrewer: A Web-Based Inflection Generator

    Science.gov (United States)

    Foster, James Q.; Harrell, Lane Foster; Raizen, Esther

    2004-01-01

    This paper reports on the grammatical and programmatical production aspects of the "Hebrewer," a cross-platform web-based reference work in the form of a Hebrew inflection generator. The Hebrewer, a Java applet/servlet combination, is currently capable of generating 2,500 nouns in full declension and 500 verbs in full conjugation, displaying the…

  12. Validation of a Web-Based Test of ESL Pragmalinguistics

    Science.gov (United States)

    Roever, Carsten

    2006-01-01

    Despite increasing interest in interlanguage pragmatics research, research on assessment of this crucial area of second language competence still lags behind assessment of other aspects of learners' developing second language (L2) competence. This study describes the development and validation of a 36-item web-based test of ESL pragmalinguistics,…

  13. The Direction of Web-based Training: A Practitioner's View.

    Science.gov (United States)

    Kilby, Tim

    2001-01-01

    Web-based training has had achievements and disappointments as online learning has matured. Best practices include user-centered design, knowledge object structures, usability engineering, and formal evaluation. Knowledge management, peer-to-peer learning, and personal learning appliances will continue to alter the online learning landscape. (SK)

  14. Web-Based Evaluation System for Learning Management Systems

    Science.gov (United States)

    Momani, Alaa

    2010-01-01

    E-learning systems have become an issue in recent years. A learning management system (LMS) is an electronic environment helps the educational society to communicate, exchange information, manage, and schedule the learning process. This study has provided a web-based evaluation system that may help the users to choose the convenient system…

  15. Development of Web-Based Learning Application for Generation Z

    Science.gov (United States)

    Hariadi, Bambang; Dewiyani Sunarto, M. J.; Sudarmaningtyas, Pantjawati

    2016-01-01

    This study aimed to develop a web-based learning application as a form of learning revolution. The form of learning revolution includes the provision of unlimited teaching materials, real time class organization, and is not limited by time or place. The implementation of this application is in the form of hybrid learning by using Google Apps for…

  16. Research of Web-based Workflow Management System

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The state of the art of workflow management techniques in research is introduced. The research and development trends of Workflow Manag ement System (WFMS) are presented. On basis of analysis and comparison of kinds of WFMSs, a WFMS based on Web technology and distributed object management is pr oposed. Finally, the application of the WFMS in supply chain management is descr ibed in detail.

  17. Using Web-Based Foreign Advertisements in International Marketing Classes

    Science.gov (United States)

    Ryan, Jason

    2011-01-01

    The author examines the use of the Web-based foreign advertisements for enhancing the international awareness of undergraduate marketing students. An analysis compares the adaptation of advertisements for identical products to the cultural perceptions and values of consumers in different countries. In a sample of 110 international marketing…

  18. Web Based Parallel Programming Workshop for Undergraduate Education.

    Science.gov (United States)

    Marcus, Robert L.; Robertson, Douglass

    Central State University (Ohio), under a contract with Nichols Research Corporation, has developed a World Wide web based workshop on high performance computing entitled "IBN SP2 Parallel Programming Workshop." The research is part of the DoD (Department of Defense) High Performance Computing Modernization Program. The research activities included…

  19. Formative Evaluation of a Web-Based Course in Meteorology.

    Science.gov (United States)

    Phelps, Julia; Reynolds, Ross

    1999-01-01

    Describes the formative-evaluation process for the EuroMET (European Meteorological Education and Training) project, Web-Based university courses in meteorology that were created to address the education and training needs of professional meteorologists and students throughout Europe. Usability and interactive and multimedia elements are…

  20. Web Based Organizing and the Management of Human Resources

    NARCIS (Netherlands)

    J. Paauwe (Jaap); R. Visser (Reina); A.R.T. Williams (Roger)

    2002-01-01

    textabstractThe paper focuses on the consequences of web-based business-to-business transactions in medium and large old economy companies in particular and discusses the implications for HRM and HR professionals. Medium and large old economy companies can be involved in transactions within the new

  1. A Web-Based Remote Access Laboratory Using SCADA

    Science.gov (United States)

    Aydogmus, Z.; Aydogmus, O.

    2009-01-01

    The Internet provides an opportunity for students to access laboratories from outside the campus. This paper presents a Web-based remote access real-time laboratory using SCADA (supervisory control and data acquisition) control. The control of an induction motor is used as an example to demonstrate the effectiveness of this remote laboratory,…

  2. Science gateways for semantic-web-based life science applications.

    Science.gov (United States)

    Ardizzone, Valeria; Bruno, Riccardo; Calanducci, Antonio; Carrubba, Carla; Fargetta, Marco; Ingrà, Elisa; Inserra, Giuseppina; La Rocca, Giuseppe; Monforte, Salvatore; Pistagna, Fabrizio; Ricceri, Rita; Rotondo, Riccardo; Scardaci, Diego; Barbera, Roberto

    2012-01-01

    In this paper we present the architecture of a framework for building Science Gateways supporting official standards both for user authentication and authorization and for middleware-independent job and data management. Two use cases of the customization of the Science Gateway framework for Semantic-Web-based life science applications are also described.

  3. Analogies: Explanatory Tools in Web-Based Science Instruction

    Science.gov (United States)

    Glynn, Shawn M.; Taasoobshirazi, Gita; Fowler, Shawn

    2007-01-01

    This article helps designers of Web-based science instruction construct analogies that are as effective as those used in classrooms by exemplary science teachers. First, the authors explain what analogies are, how analogies foster learning, and what form analogies should take. Second, they discuss science teachers' use of analogies. Third, they…

  4. Snippet-based relevance predictions for federated web search

    NARCIS (Netherlands)

    Demeester, Thomas; Nguyen, Dong; Trieschnigg, Dolf; Develder, Chris; Hiemstra, Djoerd

    2013-01-01

    How well can the relevance of a page be predicted, purely based on snippets? This would be highly useful in a Federated Web Search setting where caching large amounts of result snippets is more feasible than caching entire pages. The experiments reported in this paper make use of result snippets and

  5. Web-Based Assessment of Children's Social-Emotional Comprehension

    Science.gov (United States)

    McKown, Clark; Russo-Ponsaran, Nicole M.; Johnson, Jason K.; Russo, Jaclyn; Allen, Adelaide

    2016-01-01

    This article presents results from two studies that included ethnically and socioeconomically diverse samples totaling 4,462 children in kindergarten through third grade. Each study examined the psychometric properties of a web-based, self-administered battery of assessments of social-emotional comprehension called "SELweb." Assessment…

  6. 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…

  7. Price Bubbles with Discounting: A Web-Based Classroom Experiment

    Science.gov (United States)

    Bostian, AJ A.; Holt, Charles A.

    2009-01-01

    The authors describe a Web-based classroom experiment with two assets: cash and a stock that pays a random dividend. The interest rate on cash, coupled with a well-chosen final redemption value for the stock, induces a flat trajectory for the fundamental value of the stock. However, prices typically rise above this value during a session. The…

  8. Real-time web-based telerehabilitation monitoring.

    Science.gov (United States)

    Lewis, Jeffrey; Boian, Rares; Burdea, Grigore; Deutsch, Judith

    2003-01-01

    Distance monitoring of rehabilitation exercises has been primarily conducted using two-way video conferencing. This paper presents a real-time web-based monitoring system that greatly enhances the capability of the clinician to direct rehabilitation therapies. PMID:15455890

  9. College Students Attitude and Mathematics Achievement Using Web Based Homework

    Science.gov (United States)

    Leong, Kwan Eu; Alexander, Nathan

    2014-01-01

    The goal of this study was to understand how students' attitudes were connected to their mathematics learning and achievement. This investigation of students (n = 78) and their attitudes was specific to web-based homework in developmental mathematics courses in a two-year community college located in a large urban city in the United States. A…

  10. A Usability Study of Interactive Web-Based Modules

    Science.gov (United States)

    Girard, Tulay; Pinar, Musa

    2011-01-01

    This research advances the understanding of the usability of marketing case study modules in the area of interactive web-based technologies through the assignment of seven interactive case modules in a Principles of Marketing course. The case modules were provided for marketing students by the publisher, McGraw Hill Irwin, of the "Marketing"…

  11. Measuring participant rurality in Web-based interventions

    Directory of Open Access Journals (Sweden)

    McKay H Garth

    2007-08-01

    Full Text Available Abstract Background Web-based health behavior change programs can reach large groups of disparate participants and thus they provide promise of becoming important public health tools. Data on participant rurality can complement other demographic measures to deepen our understanding of the success of these programs. Specifically, analysis of participant rurality can inform recruitment and social marketing efforts, and facilitate the targeting and tailoring of program content. Rurality analysis can also help evaluate the effectiveness of interventions across population groupings. Methods We describe how the RUCAs (Rural-Urban Commuting Area Codes methodology can be used to examine results from two Randomized Controlled Trials of Web-based tobacco cessation programs: the ChewFree.com project for smokeless tobacco cessation and the Smokers' Health Improvement Program (SHIP project for smoking cessation. Results Using RUCAs methodology helped to highlight the extent to which both Web-based interventions reached a substantial percentage of rural participants. The ChewFree program was found to have more rural participation which is consistent with the greater prevalence of smokeless tobacco use in rural settings as well as ChewFree's multifaceted recruitment program that specifically targeted rural settings. Conclusion Researchers of Web-based health behavior change programs targeted to the US should routinely include RUCAs as a part of analyzing participant demographics. Researchers in other countries should examine rurality indices germane to their country.

  12. Using Web-Based GIS in Introductory Human Geography

    Science.gov (United States)

    Songer, Lynn C.

    2010-01-01

    Advocates for using a geographic information system (GIS) in education assert that GIS improves student learning. However, studies to clarify the relationship between learning and using GIS are still needed. This study examines the effects of using Web-based GIS maps in place of paper maps on students' geography content knowledge and motivation…

  13. Case-Based Learning, Pedagogical Innovation, and Semantic Web Technologies

    Science.gov (United States)

    Martinez-Garcia, A.; Morris, S.; Tscholl, M.; Tracy, F.; Carmichael, P.

    2012-01-01

    This paper explores the potential of Semantic Web technologies to support teaching and learning in a variety of higher education settings in which some form of case-based learning is the pedagogy of choice. It draws on the empirical work of a major three year research and development project in the United Kingdom: "Ensemble: Semantic Technologies…

  14. Empower the patients with a dialogue-based web application

    DEFF Research Database (Denmark)

    Bjørnes, Charlotte D.; Cummings, Elizabeth; Nøhr, Christian

    2012-01-01

    -based web application was designed and implemented to accommodate patients' information and communication needs in short stay hospital settings. To ensure the system meet the patients' needs, both patients and healthcare professionals were involved in the design process by applying various participatory...

  15. School Counseling Site Supervisor Training: A Web-Based Approach

    Science.gov (United States)

    Swank, Jacqueline M.; Tyson, Lawrence

    2012-01-01

    A need exists for training school counseling site supervisors in providing clinical supervision to school counseling practicum and internship students. This article outlines a Web-based training program containing six modules to assist counselor education programs in educating school counseling site supervisors. The authors also address the…

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

    Directory of Open Access Journals (Sweden)

    Boni García

    2011-08-01

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

  17. Ontology-Based Automatically Hidden Web Portal Index

    Institute of Scientific and Technical Information of China (English)

    SONGHui; PANLeyun; MAFanyuan

    2004-01-01

    Many valuable databases on the Web have non-crawlable contents that are “hidden” behind the search forms. Information is available only by filling out HTML forms manually to query the underlying databases. For accessing data behind forms by automated agents, the critical task is having the corresponding query interfaces of the hidden databases that can be understood by machine. This paper presents an automatic approach of hidden Web portal index for various domains. It discovers and scrapes the query forms from Web pages based the tag-tree presentation, and then interpret them into the uniform mediate interfaces with the aid of domain ontology definition. To achieve high transformation accuracy, the domain ontology is also used to filter out the interfaces that are not related to the specific domain. The query interfaces gained finally represented with common concepts can automatically be indexed and retrieved by program. The experiments indicate that the algorithms used are efficient and the system is materially useful for information system or personalized Web search system to retrieval contents from hidden Web.

  18. Web based collaborative decision making in flood risk management

    Science.gov (United States)

    Evers, Mariele; Almoradie, Adrian; Jonoski, Andreja

    2014-05-01

    Stakeholder participation in the development of flood risk management (FRM) plans is essential since stakeholders often have a better understanding or knowledge of the potentials and limitation of their local area. Moreover, a participatory approach also creates trust amongst stakeholders, leading to a successful implementation of measures. Stakeholder participation however has its challenges and potential pitfalls that could lead to its premature termination. Such challenges and pitfalls are the limitation of financial resources, stakeholders' spatial distribution and their interest to participate. Different type of participation in FRM may encounter diverse challenges. These types of participation in FRM can be classified into (1) Information and knowledge sharing (IKS), (2) Consultative participation (CP) or (3) Collaborative decision making (CDM)- the most challenging type of participation. An innovative approach to address these challenges and potential pitfalls is a web-based mobile or computer-aided environment for stakeholder participation. This enhances the remote interaction between participating entities such as stakeholders. This paper presents a developed framework and an implementation of CDM web based environment for the Alster catchment (Hamburg, Germany) and Cranbrook catchment (London, UK). The CDM framework consists of two main stages: (1) Collaborative modelling and (2) Participatory decision making. This paper also highlights the stakeholder analyses, modelling approach and application of General Public License (GPL) technologies in developing the web-based environments. Actual test and evaluation of the environments was through series of stakeholders workshops. The overall results based from stakeholders' evaluation shows that web-based environments can address the challenges and potential pitfalls in stakeholder participation and it enhances participation in flood risk management. The web-based environment was developed within the DIANE

  19. Framework for Supporting Web-Based Collaborative Applications

    Science.gov (United States)

    Dai, Wei

    The article proposes an intelligent framework for supporting Web-based applications. The framework focuses on innovative use of existing resources and technologies in the form of services and takes the leverage of theoretical foundation of services science and the research from services computing. The main focus of the framework is to deliver benefits to users with various roles such as service requesters, service providers, and business owners to maximize their productivity when engaging with each other via the Web. The article opens up with research motivations and questions, analyses the existing state of research in the field, and describes the approach in implementing the proposed framework. Finally, an e-health application is discussed to evaluate the effectiveness of the framework where participants such as general practitioners (GPs), patients, and health-care workers collaborate via the Web.

  20. Research on Web-Based Networked Virtual Instrument System

    Science.gov (United States)

    Tang, B. P.; Xu, C.; He, Q. Y.; Lu, D.

    2006-10-01

    The web-based networked virtual instrument (NVI) system is designed by using the object oriented methodology (OOM). The architecture of the NVI system consists of two major parts: client—web server interaction and instrument server—virtual instrument (VI) communication. The web server communicates with the instrument server and the clients connected to it over the Internet, and it handles identifying the user's name, managing the connection between the user and the instrument server, adding, removing and configuring VI's information. The instrument server handles setting the parameters of VI, confirming the condition of VI and saving the VI's condition information into the database. The NVI system is required to be a general-purpose measurement system that is easy to maintain, adapt and extend. Virtual instruments are connected to the instrument server and clients can remotely configure and operate these virtual instruments. An application of The NVI system is given in the end of the paper.

  1. Model Checking-Based Testing of Web Applications

    Institute of Scientific and Technical Information of China (English)

    ZENG Hongwei; MIAO Huaikou

    2007-01-01

    A formal model representing the navigation behavior of a Web application as the Kripke structure is proposed and an approach that applies model checking to test case generation is presented. The Object Relation Diagram as the object model is employed to describe the object structure of a Web application design and can be translated into the behavior model. A key problem of model checking-based test generation for a Web application is how to construct a set of trap properties that intend to cause the violations of model checking against the behavior model and output of counterexamples used to construct the test sequences.We give an algorithm that derives trap properties from the object model with respect to node and edge coverage criteria.

  2. Web-based PACS and EHR system

    Science.gov (United States)

    Parikh, Ashesh; Mehta, Nihal

    2015-03-01

    We demonstrate how a cloud-based PACS can exchange information with other medical systems, including other cloud-based PACS, to provide a comprehensive and integrated view of a patient's health record. Such a consolidated report will lead to improved patient care.

  3. 75 FR 29307 - Web Based Supply Chain Management Commodity Offer Form, Paperwork Collection Notice

    Science.gov (United States)

    2010-05-25

    ... Agricultural Marketing Service Web Based Supply Chain Management Commodity Offer Form, Paperwork Collection... Based Supply Chain Management (WBSCM) that will allow respondents to submit information electronically... CONTACT: David Tuckwiller, Project Manager, Web Based Supply Chain Management System, phone (202)...

  4. Towards Configuration of applied Web-based information system

    CERN Document Server

    Levin, Mark Sh

    2011-01-01

    In the paper, combinatorial synthesis of structure for applied Web-based systems is described. The problem is considered as a combination of selected design alternatives for system parts/components into a resultant composite decision (i.e., system configuration design). The solving framework is based on Hierarchical Morphological Multicriteria Design (HMMD) approach: (i) multicriteria selection of alternatives for system parts, (ii) composing the selected alternatives into a resultant combination (while taking into account ordinal quality of the alternatives above and their compatibility). A lattice-based discrete space is used to evaluate (to integrate) quality of the resultant combinations (i.e., composite system decisions or system configurations). In addition, a simplified solving framework based on multicriteria multiple choice problem is considered. A multistage design process to obtain a system trajectory is described as well. The basic applied example is targeted to an applied Web-based system for a c...

  5. Web-based treatment for infertility-related psychological distress.

    Science.gov (United States)

    Sexton, Minden B; Byrd, Michelle R; O'Donohue, William T; Jacobs, Negar Nicole

    2010-08-01

    Infertility has been associated with stigma and negative psychosocial functioning. However, only a small proportion of this population actually receives care. Fertility patients predominantly use the Internet for information gathering, social support, and assistance with decision-making; yet, available web resources are unreliable sources of mental health care. Web-based alternatives also have the potential to assist with intervention access difficulties and may be of significant lower cost. This study evaluated the efficacy of a web-based approach to providing a cognitive behavioral intervention with 31 infertile women seeking medical reproductive technologies. Following randomized assignment, participants using the web-based intervention were compared with those in a wait-list control condition on general and infertility-related psychological stress measures. Results were mixed regarding intervention efficacy. Significant declines in general stress were evidenced in the experimental group compared with a wait-list control group. However, website access did not result in statistically significant improvements on a measure of infertility-specific stress. These findings add to the literature on psychological interventions for women experiencing fertility problems. Moreover, despite the widespread use of the Internet by this population, the present study is one of the first to investigate the usefulness of the Internet to attenuate stress in this population. Preliminary results suggest general stress may be significantly reduced in infertile women using an online cognitive behavioral approach. PMID:20127127

  6. Human-Robot Interface over the Web Based Intelligent System

    Directory of Open Access Journals (Sweden)

    Desa Hazry

    2006-01-01

    Full Text Available This research extends the capability for the new technology platform by Remote Data Inspection System (RDIS server from Furukawa Co., Ltd. Enabling the integration of standard Hypertext Markup Language (HTML programming and RDIS tag programming to create a user-friendly “point-and-click” web-based control mechanism. The integration allows the users to send commands to mobile robot over the Internet. Web-based control enables human to extend his action and intelligence to remote locations. Three mechanisms for web-based controls are developed: Manual remote control, continuous operation event and autonomous navigational control. In the manual remote control the user is fully responsible for the robot action and the robot do not use any sophisticated algorithms. The continuous operation event is the extension of the basic movement of a manual remote control mechanism. In the autonomous navigation control, the user has more flexibility to tell the robot to carry out specific tasks. Using this method, mobile robot can be controlled via the web, from any places connected to the network without constructing specific infrastructures for communication.

  7. An efficient and flexible web services-based multidisciplinary design optimisation framework for complex engineering systems

    Science.gov (United States)

    Li, Liansheng; Liu, Jihong

    2012-08-01

    Multidisciplinary design optimisation (MDO) involves multiple disciplines, multiple coupled relationships and multiple processes, which is implemented by different specialists dispersed geographically on heterogeneous platforms with different analysis and optimisation tools. The product design data integration and data sharing among the participants hampers the development and applications of MDO in enterprises seriously. Therefore, a multi-hierarchical integrated product design data model (MH-iPDM) supporting the MDO in the web environment and a web services-based multidisciplinary design optimisation (Web-MDO) framework are proposed in this article. Based on the enabling technologies including web services, ontology, workflow, agent, XML and evidence theory, the proposed framework enables the designers geographically dispersed to work collaboratively in the MDO environment. The ontology-based workflow enables the logical reasoning of MDO to be processed dynamically. The evidence theory-based uncertainty reasoning and analysis supports the quantification, aggregation and analysis of the conflicting epistemic uncertainty from multiple sources, which improves the quality of product. Finally, a proof-of-concept prototype system is developed using J2EE and an example of supersonic business jet is demonstrated to verify the autonomous execution of MDO strategies and the effectiveness of the proposed approach.

  8. Interactive visualization of marine pollution monitoring and forecasting data via a Web-based GIS

    Science.gov (United States)

    Kulawiak, M.; Prospathopoulos, A.; Perivoliotis, L.; łuba, M.; Kioroglou, S.; Stepnowski, A.

    2010-08-01

    This work implements a Web-based Geographic Information System (Web GIS) for an existing oil spill monitoring and forecasting service, developed in the framework of the MARCOAST project. This is achieved by remotely presenting the results of the oil spill forecasting module via a dedicated Web GIS, which allows authenticated end users to view the simulation results in a geographical context. A number of Web GIS technologies for presentation of dissimilar types of semi-dynamic geographic data are applied and their respective capabilities for publishing and remote presentation of interactive geospatial information, such as oil spill spread animation overlaid on background data (terrain elevation data, satellite imagery, etc.), are described. More specifically, technologies like ESRI ® ArcIMS ® (Arc Internet Map Server) and Open Source GeoServer with OpenLayers client library are implemented. The capabilities of the system for visualization and mapping are illustrated by specific applications concerning the spreading scenarios of oil spills in two selected areas of the Aegean Sea, Greece. The presented Web GIS offers added value in the form of providing the end user with comprehensive and synthetic, both spatial and temporal, environmental information through a remotely customizable user-friendly graphical interface. In this context, its integration to a marine pollution monitoring and forecasting system could result in an enhanced pollution awareness and emergency management tool.

  9. Research on Development of WebGIS Based on AJAXand Google Maps API%基于AJAX和Google Maps API的WebGIS开发研究

    Institute of Scientific and Technical Information of China (English)

    唐桂文; 谭衍涛

    2013-01-01

    通过介绍AJAX技术的相关原理、Google Maps地图服务及其应用程序接口Google Maps API,提出了基于AJAX及Google Maps平台的WebGIS开发新技术.通过构建发布气象信息的WebGIS实例,探索在Google Maps 平台上利用AJAX通过XMLHttpRequest对象异步调用XML数据实现动态加载地理信息和气象信息的关键步骤.研究结果表明,WebGIS实现的新模式,能够较好地解决传统WebGIS的固有缺点,如加快了响应速度、增强了用户体验和方便了服务扩充等.%In this paper,a new technology of WebGIS development based on AJAX and Google Maps is proposed,through introducing the relevant principles of AJAX technology and Google Maps mapping service and its application programming interface that is named Google Maps API.By constructing an example of WebGIS website used for releasing the meteorological information,it explores the key steps of dynamically loading geographic information and weather information that relies on AJAX technology which can use the XMLHttpRequest object to call XML data asynchronously between the Google Maps platform and client browsers.The research results show that the new WebGIS implementation model can solve the inherent shortcomings of traditional WebGIS and present many advantages,such as accelerating the speed of response,enhancing the user experience and facilitating the service expansion etc.

  10. Using Agents in Web-Based Constructivist Collaborative Learning System

    Institute of Scientific and Technical Information of China (English)

    刘莹; 林福宗; 王雪

    2004-01-01

    Web-based learning systems are one of the most interesting topics in the area of the application of computers to education. Collaborative learning, as an important principle in constructivist learning theory, is an important instruction mode for open and distance learning systems. Through collaborative learning, students can greatly improve their creativity, exploration capability, and social cooperation. This paper used an agent-based coordination mechanism to respond to the requirements of an efficient and motivating learning process. This coordination mechanism is based on a Web-based constructivist collaborative learning system, in which students can learn in groups and interact with each other by several kinds of communication modes to achieve their learning objectives efficiently and actively. In this learning system, artificial agents represent an active part in the collaborative learning process; they can partially replace human instructors during the multi-mode interaction of the students.

  11. FARS: Fuzzy Ant based Recommender System for Web Users

    Directory of Open Access Journals (Sweden)

    Shiva Nadi

    2011-01-01

    Full Text Available Recommender systems are useful tools which provide an adaptive web environment for web users. Nowadays, having a user friendly website is a big challenge in e-commerce technology. In this paper, applying the benefits of both collaborative and content based filtering techniques is proposed by presenting a fuzzy recommender system based on collaborative behavior of ants (FARS. FARS works in two phases: modeling and recommendation. First, user's behaviors are modeled offline and the results are used in second phase for online recommendation. Fuzzy techniques provide the possibility of capturing uncertainty among user interests and ant based algorithms provides us with optimal solutions. The performance of FARS is evaluated using log files of "Information and Communication Technology Center" of Isfahan municipality in Iran and compared with ant based recommender system (ARS. The results shown are promising and proved that integrating fuzzy Ant approach provides us with more functional and robust recommendations.

  12. A URI-based approach for addressing fragments of media resources on the Web

    NARCIS (Netherlands)

    Mannens, E.; Deursen, D. van; Troncy, R.; Pfeiffer, S.; Parker, C.; Lafon, Y.; Jansen, A.J.; Hausenblas, M.; Walle, R. van de

    2011-01-01

    To make media resources a prime citizen on the Web, we have to go beyond simply replicating digital media files. The Web is based on hyperlinks between Web resources, and that includes hyperlinking out of resources (e.g., from a word or an image within a Web page) as well as hyperlinking into resour

  13. The Impact of 850,000 Years of Climate Changes on the Structure and Dynamics of Mammal Food Webs

    OpenAIRE

    Hedvig K Nenzén; Montoya, Daniel; Varela, Sara

    2014-01-01

    Most evidence of climate change impacts on food webs comes from modern studies and little is known about how ancient food webs have responded to climate changes in the past. Here, we integrate fossil evidence from 71 fossil sites, body-size relationships and actualism to reconstruct food webs for six large mammal communities that inhabited the Iberian Peninsula at different times during the Quaternary. We quantify the long-term dynamics of these food webs and study how their structure changed...

  14. Web Database Query Interface Annotation Based on User Collaboration

    Institute of Scientific and Technical Information of China (English)

    LIU Wei; LIN Can; MENG Xiaofeng

    2006-01-01

    A vision based query interface annotation method is used to relate attributes and form elements in form-based web query interfaces, this method can reach accuracy of 82%.And a user participation method is used to tune the result; user can answer "yes" or "no" for existing annotations, or manually annotate form elements.Mass feedback is added to the annotation algorithm to produce more accurate result.By this approach, query interface annotation can reach a perfect accuracy.

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

    Directory of Open Access Journals (Sweden)

    M. Rautenhaus

    2012-01-01

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

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

    Directory of Open Access Journals (Sweden)

    M. Rautenhaus

    2011-09-01

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

  17. Web-Based Urban Metabolic Mapping for Bangalore, India

    Science.gov (United States)

    Mehta, V. K.; Kemp-Benedict, E.; Wang, G.; Malghan, D.

    2012-12-01

    Cities are like living entities, needing a continuous throughput of resources and energy for survival and growth, creating waste in the process. This paper documents the Bangalore Urban Mapping Project: an initiative that uses this metabolic concept [1],[2]. to inform comprehensive planning in the rapidly growing software capital of Bangalore city in India. Focusing on demographic growth, and water supply and consumption in its first phase, a web-based geo-portal has been developed for two purposes - interactive information communication and delivery, and online planning in the water supply sector. The application, titled Bangalore Urban Mapping Project (BUMP) is built on a free and open source web GIS stack consisting of a Postgis database, PHP, OpenLayers, and Apache Web Server deployed on a 64-bit Ubuntu Linux server platform. The interactive planning portion of the application allows BUMP users to build, run and visualize demographic growth, water supply, and growth scenarios on the browser. Application logic is written in PHP to connect the many components of the interactive application, which is available on the BUMP website (http://www.seimapping.org/bump/index.php). It relies on AJAX to fetch layer data from the server and render the layer using OpenLayers on the fly. This allows users to view multiple layers at the same time without refreshing the page. Data is packed in GeoJSON format and is compressed to reduce traffic. The information communication portion of the application provides thematic representation of each of twenty different map layers, graphical and tabular summaries of demographic and water data that are presented dynamically using Javascript libraries including the Google Chart API. The application also uses other common Javascript libraries/plug-ins, like jQuery, jQuery UI, qTip, to ease the development and to ensure cross-browser compatibility. The planning portion of the platform allows the user to interact with a scenario explorer

  18. About Web-Based Distance Learning

    OpenAIRE

    Tinatin Mshvidobadze; Tamar Gogoladze

    2012-01-01

    This paper reviews the status of natural resources distance learning programs in both the United States and China and evaluation of the feasibility for American higher education institutions to extend such programs to students in China. Computer-based learning programs were reviewed for a random sample of 300 American colleges and universities. A short fact-finding trip to China was conducted to visit 7 Chinese to obtain information.

  19. Mathematics of Web science: structure, dynamics and incentives.

    Science.gov (United States)

    Chayes, Jennifer

    2013-03-28

    Dr Chayes' talk described how, to a discrete mathematician, 'all the world's a graph, and all the people and domains merely vertices'. A graph is represented as a set of vertices V and a set of edges E, so that, for instance, in the World Wide Web, V is the set of pages and E the directed hyperlinks; in a social network, V is the people and E the set of relationships; and in the autonomous system Internet, V is the set of autonomous systems (such as AOL, Yahoo! and MSN) and E the set of connections. This means that mathematics can be used to study the Web (and other large graphs in the online world) in the following way: first, we can model online networks as large finite graphs; second, we can sample pieces of these graphs; third, we can understand and then control processes on these graphs; and fourth, we can develop algorithms for these graphs and apply them to improve the online experience. PMID:23419846

  20. A Risk-Analysis Approach to Implementing Web-Based Assessment

    Science.gov (United States)

    Ricketts, Chris; Zakrzewski, Stan

    2005-01-01

    Computer-Based Assessment is a risky business. This paper proposes the use of a model for web-based assessment systems that identifies pedagogic, operational, technical (non web-based), web-based and financial risks. The strategies and procedures for risk elimination or reduction arise from risk analysis and management and are the means by which…

  1. Web-based Construction Information Management System

    Directory of Open Access Journals (Sweden)

    David Scott

    2012-11-01

    Full Text Available Centralised information systems that are accessible to all parties in a construction project are powerful tools in the quest to improve efficiency and to enhance the flow of information within the construction industry. This report points out the maturity of the necessary IT technology, the availability and the suitability of existing commercial products.Some of these products have been studied and analysed. An evaluation and selection process based on the functions offered in the products and their utility is presented. A survey of local construction personnel has been used to collect typical weighting data and performance criteria used in the evaluation process.

  2. Online Database Editor Design for Web Based Distance Education

    Directory of Open Access Journals (Sweden)

    Mustafa Ali Akça

    2015-10-01

    Full Text Available Web-Based Distance Education every day continues to increase its influence in all areas. Informatics, especially in software training is widely used in web-based distance education. However, based on coding in a course with topics of mutual teacher / student interaction, also known to increase the success of the individual is a fact. In this study, software engineering, computer engineering, computer teacher and information technology departments, such as computer programming course to be used in the online database to MSSQL editor is designed as an employee. In this study, students entering the system assigned to them can create tables in the database online, it can add data to the tables and SQL queries can be run. Students in all of these studies, despite all the distance education classroom environment facility engages in close communication facilities.

  3. Automatic web services classification based on rough set theory

    Institute of Scientific and Technical Information of China (English)

    陈立; 张英; 宋自林; 苗壮

    2013-01-01

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

  4. Interactive Web-based Floodplain Simulation System for Realistic Experiments of Flooding and Flood Damage

    Science.gov (United States)

    Demir, I.

    2013-12-01

    Recent developments in web technologies make it easy to manage and visualize large data sets with general public. Novel visualization techniques and dynamic user interfaces allow users to create realistic environments, and interact with data to gain insight from simulations and environmental observations. The floodplain simulation system is a web-based 3D interactive flood simulation environment to create real world flooding scenarios. The simulation systems provides a visually striking platform with realistic terrain information, and water simulation. Students can create and modify predefined scenarios, control environmental parameters, and evaluate flood mitigation techniques. The web-based simulation system provides an environment to children and adults learn about the flooding, flood damage, and effects of development and human activity in the floodplain. The system provides various scenarios customized to fit the age and education level of the users. This presentation provides an overview of the web-based flood simulation system, and demonstrates the capabilities of the system for various flooding and land use scenarios.

  5. Learning Based on Web2.0%基于Web2.0的学习

    Institute of Scientific and Technical Information of China (English)

    马金凤

    2011-01-01

    对基于Web 2.0的学习进行了论述。通过分析Web 2.0的模式和特征,探讨了Web 2.0在教学过程中对于教师和学习者产生的新的教学、学习方式,考察了Web 2.0对于学习资源进行的知识管理,提出了在Web 2.0学习中对学习者生存能力和道德规范的要求。%this article mainly based on Web 2.0 learning to recognize.Through the analysis of Web 2.0 patterns and characteristics,discusses the Web 2.0 in the teaching process on teachers and learners new teaching and learning mode,inspects the Web 2.0 for learning

  6. Taking advantage of Google's Web-based applications and services.

    Science.gov (United States)

    Brigham, Tara J

    2014-01-01

    Google is a company that is constantly expanding and growing its services and products. While most librarians possess a "love/hate" relationship with Google, there are a number of reasons you should consider exploring some of the tools Google has created and made freely available. Applications and services such as Google Docs, Slides, and Google+ are functional and dynamic without the cost of comparable products. This column will address some of the issues users should be aware of before signing up to use Google's tools, and a description of some of Google's Web applications and services, plus how they can be useful to librarians in health care. PMID:24735269

  7. Developing a course in nuclear reactor modelling and going from campus-based to web-based teaching

    International Nuclear Information System (INIS)

    This paper presents the development of a course in nuclear reactor modelling at Chalmers University of Technology in Gothenburg, Sweden. This course, part of an international master program in nuclear engineering, deals with the modelling of deterministic neutron transport, fluid dynamics, and heat transfer in nuclear cores. The objective of the course is to present the methods applied in the simulation tools used by the industry for both steady-state and transient calculations. The originality of the course lies with the fact that all the above fields are tackled in a single course and that all the fundamental algorithms, together with their approximations and limitations, are detailed. The paper also reports on a web-based teaching framework lately adopted for the course. In this configuration, the course was entirely based on using the web for all lectures, tutorials, examination, and communication with the teaching staff. All course materials were accessible on the web to all students at any time, with the lectures recorded in advance and the tutorials live broadcasted and also available for on-demand viewing. The on-site students also had the possibility to attend the tutorials in a classical campus-based teaching set-up. An evaluation of the web-based teaching methods was made possible by the fact that the course was earlier run in a campus-based format. Despite a limited number of students making difficult to draw any systematic conclusions, a deeper learning to the course concepts was perceived. (author)

  8. Rapid contemporary evolution and clonal food web dynamics.

    Science.gov (United States)

    Jones, Laura E; Becks, Lutz; Ellner, Stephen P; Hairston, Nelson G; Yoshida, Takehito; Fussmann, Gregor F

    2009-06-12

    Character evolution that affects ecological community interactions often occurs contemporaneously with temporal changes in population size, potentially altering the very nature of those dynamics. Such eco-evolutionary processes may be most readily explored in systems with short generations and simple genetics. Asexual and cyclically parthenogenetic organisms such as microalgae, cladocerans and rotifers, which frequently dominate freshwater plankton communities, meet these requirements. Multiple clonal lines can coexist within each species over extended periods, until either fixation occurs or a sexual phase reshuffles the genetic material. When clones differ in traits affecting interspecific interactions, within-species clonal dynamics can have major effects on the population dynamics. We first consider a simple predator-prey system with two prey genotypes, parametrized with data from a well-studied experimental system, and explore how the extent of differences in defence against predation within the prey population determine dynamic stability versus instability of the system. We then explore how increased potential for evolution affects the community dynamics in a more general community model with multiple predator and multiple prey genotypes. These examples illustrate how microevolutionary 'details' that enhance or limit the potential for heritable phenotypic change can have significant effects on contemporaneous community-level dynamics and the persistence and coexistence of species.

  9. Prototype of a Mobile Social Network for Education Using Dynamic Web Service

    Science.gov (United States)

    Hoentsch, Sandra Costa Pinto; Carvalho, Felipe Oliveira; Santos, Luiz Marcus Monteiro de Almeida; Ribeiro, Admilson de Ribamar Lima

    2012-01-01

    This article presents the proposal of a social network site SocialNetLab that belongs to the Department of Computing-Federal University of Sergipe and which aims to locate and notify users of a nearby friend independently of the location technology available in the equipment through dynamic Web Service; to serve as a laboratory for research in…

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2007-11-15

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

  11. Web-based supplier relationship framework using agent systems

    Institute of Scientific and Technical Information of China (English)

    Oboulhas Conrad Tsahat Onesime; XU Xiao-fei(徐晓飞); ZHAN De-chen(战德臣)

    2004-01-01

    In order to enable both manufacturers and suppliers to be profitable on today' s highly competitive markets, manufacturers and suppliers must be quick in selecting best partners establishing strategic relationship, and collaborating with each other so that they can satisfy the changing competitive manufacturing requirements. A web-based supplier relationships (SR) framework is therfore proposed using multi-agent systems and linear programming technique to reduce supply cost, increase flexibility and shorten response time. Web-based SR approach is an ideal platform for information exchange that helps buyers and suppliers to maintain the availability of materials in the right quantity, at the right place, and at the right time, and keep the customer-supplier relationship more transparent. A multi-agent system prototype was implemented by simulation, which shows the feasibility of the proposed architecture.

  12. Implementation of Web-based Information Systems in Distributed Organizations

    DEFF Research Database (Denmark)

    Bødker, Keld; Pors, Jens Kaaber; Simonsen, Jesper

    2004-01-01

    This article presents results elicited from studies conducted in relation to implementing a web-based information system throughout a large distributed organization. We demonstrate the kind of expectations and conditions for change that management face in relation to open-ended, configurable......, and context specific web-based information systems like Lotus QuickPlace. Our synthesis from the empirical findings is related to two recent models, the improvisational change management model suggested by Orlikowski and Hofman (1997), and Gallivan's (2001) model for organizational adoption and assimilation....... In line with comparable approaches from the knowledge management area (Dixon 2000; Markus 2001), we relate to, refine, and operationalize the models from an overall organizational view by identifying and characterizing four different and general implementation contexts...

  13. Web-based learning: pros, cons and controversies.

    Science.gov (United States)

    Cook, David A

    2007-01-01

    Advantages of web-based learning (WBL) in medical education include overcoming barriers of distance and time, economies of scale, and novel instructional methods, while disadvantages include social isolation, up-front costs, and technical problems. Web-based learning is purported to facilitate individualised instruction, but this is currently more vision than reality. More importantly, many WBL instructional designs fail to incorporate principles of effective learning, and WBL is often used for the wrong reasons (e.g., for the sake of technology). Rather than trying to decide whether WBL is superior to or equivalent to other instructional media (research addressing this question will always be confounded), we should accept it as a potentially powerful instructional tool, and focus on learning when and how to use it. Educators should recognise that high fidelity, multimedia, simulations, and even WBL itself will not always be necessary to effectively facilitate learning. PMID:17348573

  14. Web-Based Tools for Collaborative Evaluation of Learning Resources

    Directory of Open Access Journals (Sweden)

    John C. Nesbit

    2005-10-01

    Full Text Available The emergence of large repositories of web-based learning resources has increased the need for valid and usable evaluation tools. This paper reviews current approaches to learning object evaluation and introduces eLera, a set of web-based tools we have developed for communities of teachers, learners, instructional designers and developers. Compatible with current metadata standards, eLera provides a learning object review instrument (LORI and other features supporting collaborative evaluation. eLera provides limited translation of evaluations and subject taxonomies across communities using different languages and terminology. eLera is designed to assist researchers to gather data on evaluation processes and has been used to teach educators how to assess the quality of multimedia learning resources.

  15. Web-based Visual Analytics for Extreme Scale Climate Science

    Energy Technology Data Exchange (ETDEWEB)

    Steed, Chad A [ORNL; Evans, Katherine J [ORNL; Harney, John F [ORNL; Jewell, Brian C [ORNL; Shipman, Galen M [ORNL; Smith, Brian E [ORNL; Thornton, Peter E [ORNL; Williams, Dean N. [Lawrence Livermore National Laboratory (LLNL)

    2014-01-01

    In this paper, we introduce a Web-based visual analytics framework for democratizing advanced visualization and analysis capabilities pertinent to large-scale earth system simulations. We address significant limitations of present climate data analysis tools such as tightly coupled dependencies, ineffi- cient data movements, complex user interfaces, and static visualizations. Our Web-based visual analytics framework removes critical barriers to the widespread accessibility and adoption of advanced scientific techniques. Using distributed connections to back-end diagnostics, we minimize data movements and leverage HPC platforms. We also mitigate system dependency issues by employing a RESTful interface. Our framework embraces the visual analytics paradigm via new visual navigation techniques for hierarchical parameter spaces, multi-scale representations, and interactive spatio-temporal data mining methods that retain details. Although generalizable to other science domains, the current work focuses on improving exploratory analysis of large-scale Community Land Model (CLM) and Community Atmosphere Model (CAM) simulations.

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

    International Nuclear Information System (INIS)

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

  17. Context Disambiguation Based Semantic Web Search for Effective Information Retrieval

    Directory of Open Access Journals (Sweden)

    M. Barathi

    2011-01-01

    Full Text Available Problem statement: Search queries are short and ambiguous and are insufficient for specifying precise user needs. To overcome this problem, some search engines suggest terms that are semantically related to the submitted queries, so that users can choose from the suggestions based on their information needs. Approach: In this study, we introduce an effective approach that captures the user’s specific context by using the WordNet based semantic relatedness measure and the measures of joint keyword occurrences in the web page. Results: The context of the user query is identified and formulated. The user query is enriched to get more relevant web pages that the user needs. Conclusion: Experimental results show that our approach has better precision and recall than the existing methods.

  18. SMPDF Web: a web-based application for specialized minimal parton distribution functions

    CERN Document Server

    Carrazza, Stefano

    2016-01-01

    We present SMPDF Web, a web interface for the construction of parton distribution functions (PDFs) with a minimal number of error sets needed to represent the PDF uncertainty of specific processes (SMPDF).

  19. Cultural and Rhetorical Bases for communicating knowledge in web based communities

    DEFF Research Database (Denmark)

    Kampf, Constance; Kommers, Piet

    2008-01-01

    Cultural and Rhetorical Bases for communicating knowledge in web based communities How can we extend learner-centred theories for educational technology to include, for instance, the cultural and rhetorical backgrounds which influence participants in online communities as they engage in knowledge...... via web-based communities the intersection of culture and rhetoric in web-based communication rhetoric and discourse in the process of communicating knowledge via technology heuristics for knowledge communication from teaching in online forums connections between identity and knowledge communication...

  20. 基于活动授权的组合Web服务业务流程动态访问控制模型研究%STUDY ON ACTIVITY AUTHORIZATION BASED DYNAMIC ACCESS CONTROL MODEL FOR COMPOSITE WEB SERVICES BUSINESS PROCESS

    Institute of Scientific and Technical Information of China (English)

    上超望; 刘清堂; 赵呈领; 童名文

    2014-01-01

    Business process access control mechanism is a difficult problem in composite web services security applications.Considering the deficiency in current researches,an Activity Authorization Based Dynamic Access Control Model for BPEL4WS (AACBP)is proposed.By dissolving the coupling relationship between the organization model and the business process model,AACBP utilizes activity authorization as the basic unit to implement BPEL4WS access control.Through the activity instances,the model implements fine-gained access control of the activities,and realizes the synchronization of authorization and business process execution.At last,the paper also describes the implementa-tion architecture of AACBP model in web services secure composition.%业务流程访问控制机制是组合Web服务安全应用中的难点问题。针对现有研究不足,提出基于活动授权的Web服务业务流程动态访问控制模型AACBP(Activity Authorization Based Dynamic Access Control Model for BPEL4WS)。通过解除组织模型和业务流程模型间的耦合关系,AACBP将活动授权作为BPEL4WS(Business Process Expression Language for Web Services)活动访问控制实施的基本单元。依据活动实例动态感知上下文,AACBP细粒度约束活动访问授权,实现授权流与业务流程执行同步。最后给出AACBP模型在Web服务安全组合中的实施机制。

  1. Research on Dynamic Competitive Intelligence Analysis Based on Web Review Mining(I): Problem Analysis and Model Construction%基于Web评论挖掘的动态竞争情报分析研究(上)——问题分析与模型构建

    Institute of Scientific and Technical Information of China (English)

    张玉峰; 何超

    2012-01-01

    面对网络中日益丰富的用户评论信息,利用评论挖掘技术对其进行智能化的自动分析,获取非传统意义上的动态竞争情报,对于企业竞争战略的制定和竞争优势的保持具有重要意义。文章在详细分析Web评价挖掘技术研究现状和当前竞争情报分析存在问题的基础上,将Web评论挖掘融入企业竞争情报分析之中,构建了基于Web评论挖掘的动态竞争情报分析模型,阐述了模型中各个模块的主要功能及其实现策略。%Facing the increasingly rich user review information in the network,utilizing the review mining technology to analyze it automatically and intelligently so as to obtain the nontraditional dynamic competitive intelligence is of important significance to enterprises in formulating the competitive strategies and keep the competitive advantages.Based on the detailed analysis of the research status of Web review mining technology and the problems in the current competitive intelligence analysis,this paper integrates the Web review mining technology into the enterprise competitive intelligence analysis,constructs a dynamic competitive intelligence analysis model based on Web review mining,and expatiates on the primary functions of each module in the model and its implementation strategies.

  2. Overview of Emerging Web 2.0-Based Business Models and Web 2.0 Applications in Businesses: An Ecological Perspective

    OpenAIRE

    In Lee

    2011-01-01

    Web 2.0 offers business organizations an array of new ways to interact with customers and partners. Web 2.0 is continuously evolving and offers new business models and support business processes, customer relationship management, and partner relationship management. This study reviews some of the major business applications of Web 2.0, and identifies Web 2.0-based business models. Six emerging Web 2.0-based business models were identified: (1) Broad Online Community, (2) Focused Online Commun...

  3. Development of a Web-based Costumer Relationship Management System

    OpenAIRE

    Merlak, Simon

    2011-01-01

    Customer Relationship Management (CRM) is a system that provides companies with access to comprehensive information about their clients, regardless where the data is stored. It also offers users all the tools they need, to immediately use this data and findings in their activities. The 360-degree view of the customer allows users to quickly resolve their tasks and shorten the time required to process applications. In case we have a web based CRM, this also enables mobile access from anywhere ...

  4. Rapid ontology-based Web application development with JSTL

    OpenAIRE

    López-Cima, A.; Corcho, Oscar; A. GÓMEZ-PÉREZ

    2007-01-01

    This paper presents the approach followed by the ODESeW framework for the development of ontology-based Web applications. ODESeW eases the creation of this type of applications by allowing the use of the expression language JSTL over ontology components, using a data model that reflects the knowledge representation of common ontology languages and that is implemented with Java Beans. This framework has been used for the development of a number of portals focused on the dissemination and manag...

  5. Considering learning styles in adaptative web-based education

    OpenAIRE

    Paredes Barragán, Pedro; Rodríguez Marín, Pilar

    2002-01-01

    This paper shows a way of using some dimensions of learning styles of students in order to improve the efficiency of adaptive learning systems. Firstly, it reviews the literature and previous work related to the taxonomy of learning styles and its application to web-based education. Later, it introduces the Felder-Silverman learning style model and the procedure of extracting information about students’ learning styles from the Felder-Soloman ILS questionnaire. Then, it presents a me...

  6. Web-based decision support system for industrial operations management

    OpenAIRE

    Magalhães, Ricardo; Varela, Maria Leonilde Rocha; Silva, Sílvio Carmo

    2010-01-01

    To maintain sustainability in today’s’ global economy industrial companies must have well managed systems and operations to keep up with competition. For this they can take advantage of using Web and Internet based technologies. Such can be achieved by accessing good management resources and methods through the Internet which otherwise would not be available and, at the same time, take advantageous of collaboration provided by networks of partners and users. Due to operations management compl...

  7. PERSONALIZED KNOWLEDGE MANAGEMENT IN ENVIRONMENTS OF WEB-BASED EDUCATION

    OpenAIRE

    RUBÉN PEREDO VALDERRAMA; ALEJANDRO CANALES CRUZ; ADRIANA N. RAMÍREZ SALAZAR; JUAN CARLOS CARAVANTES RAMÍREZ

    2013-01-01

    This paper is focused on the use of Knowledge Management techniques to develop environments of Web-Based Education to leverage the individual learning process for learners. Evolving use of Knowledge Management plays an important role to enhance problem solving skills. Recently, innovative approaches for integrating Knowledge Management into practical teaching activities have been ignored. The knowledge is defined as combination and organization of data and information in given context, and Kn...

  8. Web-Based Naval Fleet Logistics Information System

    OpenAIRE

    Li, Yanfeng

    2007-01-01

    Shipboard Supply Officers' training focuses on maintaining accountability and very little on operational logistics, which is only presented at predeployment briefs that last one or two days. Many Supply Officers suffer information overload during these briefs, thus making the effectiveness of the briefs questionable. On the other hand, there is insufficient information on port services and lessons learned for effective planning. This project proposes the implementation of a Web-Based Logi...

  9. Performance Factors Impacting Web-Based Learning Support Systems

    OpenAIRE

    Qidong Cao; Yingjin Cui; Xue Bai

    2007-01-01

    Web-based course management systems have been overwhelmingly accepted by instructors, students, and educational institutions. In order to improve quality of existing systems, the questions must be answered are what underlying dimensions of user's satisfaction exist and on which of those dimensions we should apply the resources. In this study, the principal component analysis was undertaken to determine the underlying dimensions. Then the scores for each dimension were calculated, and bivariat...

  10. Towards a generation-based semantic web authoring tool

    OpenAIRE

    Power, Richard

    2009-01-01

    Widespread use of Semantic Web technologies requires interfaces through which knowledge can be viewed and edited without deep understanding of Description Logic and formalisms like OWL and RDF. Several groups are pursuing approaches based on Controlled Natural Languages (CNLs), so that editing can be performed by typing in sentences which are automatically interpreted as statements in OWL. We suggest here a variant of this approach which relies entirely on Natural Language Generation (NLG), a...

  11. Mining Patterns for Web-based Emergency Management Systems

    OpenAIRE

    Montells, Laura; Montero, Susana; Díaz Pérez, Paloma; Aedo, Ignacio

    2007-01-01

    Design patterns describe problems that occur recurrently, and specify the core of the solution in such a way that we can (re)use it in different contexts and applications. Although, web-based Emergency Management Systems domain is still in its nascent stages, there are design principles, real systems and design patterns from other related areas that can be a valuable source of knowledge to mine design patterns. From these sources we have created a patterns catalogue to assist novice designers...

  12. Mouse Control using a Web Camera based on Colour Detection

    OpenAIRE

    2014-01-01

    In this paper we present an approach for Human computer Interaction (HCI), where we have tried to control the mouse cursor movement and click events of the mouse using hand gestures. Hand gestures were acquired using a camera based on colour detection technique. This method mainly focuses on the use of a Web Camera to develop a virtual human computer interaction device in a cost effective manner.

  13. Research on Web-Based Product Structure and Configuration Management

    Institute of Scientific and Technical Information of China (English)

    CHENJi-zhong; TIANLing; XUXiao-hui

    2004-01-01

    An enhanced system architecture of Web-based product structure and configuration management system along with its, functions are is presented. The key techniques, such as construction of object models of product structure and product configuration, hybrid approach method in product configuration management, sharing and integration of heterogeneous product data, integration with other sub-systems, are discussed too. A prototype system is developed by J2EE technology.

  14. A Web-based Platform for Mobile Service Delivery

    OpenAIRE

    Samaka, Mohammed; Impagliazzo, John; Ismail, Loay; Aldos, Khulood; Al-Saffar, Fatima; Hamed, Nura

    2012-01-01

    The project presented in this paper involves designing and developing a web-based platform called “Content Management & Delivery Platform” (CMDP) in support of mobile service delivery that integrates with the mobile network of Qatar Telecom (Qtel). The design of the platform meets the current and future needs in content creation and delivery for Qatari businesses and governmental organizations. The CMDP allows aggregation, rendering and delivery of different type of contents, through various ...

  15. Formal development of Java based Web parallel applications

    OpenAIRE

    di Marzo Serugendo, Giovanna; Guelfi, Nicolas

    1998-01-01

    The Java object-oriented programming language has been the subject of an important involvement from programmers and the industry. Especially for applications related to the Web. The problem of such a rapid penetration of Java programs into commercial products is that software engineers do not have any methodology and have to develop complex parallel applications. Here, we present a formal development methodology based on the stepwise refinement of CO-OPN/2 formal specifications, using a real ...

  16. iBarcode.org: web-based molecular biodiversity analysis

    OpenAIRE

    Hajibabaei Mehrdad; Singer Gregory AC

    2009-01-01

    Abstract Background DNA sequences have become a primary source of information in biodiversity analysis. For example, short standardized species-specific genomic regions, DNA barcodes, are being used as a global standard for species identification and biodiversity studies. Most DNA barcodes are being generated by laboratories that have an expertise in DNA sequencing but not in bioinformatics data analysis. Therefore, we have developed a web-based suite of tools to help the DNA barcode research...

  17. WEB-Based Portal for Tourism Promotion of Macedonia

    OpenAIRE

    Biljana PETREVSKA; Koceski, Saso

    2012-01-01

    Everyone identifies tourism as a source for generating numerous positive impacts, mainly based on the quantity of tourists and travelers. Yet, attracting them in a bigger number is not a trouble-free process, particularly in times of ever-changing environment and travel preferences. The rapid development of Internet, has changed tourism consumer behavior dramatically specifically to the way how they search for information. The Web became the leading source of information mainly important in t...

  18. Development of an Efficient QoS based Web Services Compositions Mechanism for Semantic Web

    OpenAIRE

    N.K. Sakthivel; R. Bala Krishnan

    2012-01-01

    Web Services are mounting as an inventive mechanism for rendering services to subjective devices over the WWW. As a consequence of the rapid growth of Web Services applications and the plenty of Service Providers, the consumer is facing with the inevitability of selecting the “right” Service Provider. In such a scenario the Quality of Service (QoS) serves as a target to differentiate Service Providers. To select the best Web Services / Service Providers, Ranking and Optimization of Web Servic...

  19. The influence of predator--prey population dynamics on the long-term evolution of food web structure.

    Science.gov (United States)

    Drossel, B; Higgs, P G; McKane, A J

    2001-01-01

    We develop a set of equations to describe the population dynamics of many interacting species in food webs. Predator-prey interactions are nonlinear, and are based on ratio-dependent functional responses. The equations account for competition for resources between members of the same species, and between members of different species. Predators divide their total hunting/foraging effort between the available prey species according to an evolutionarily stable strategy (ESS). The ESS foraging behaviour does not correspond to the predictions of optimal foraging theory. We use the population dynamics equations in simulations of the Webworld model of evolving ecosystems. New species are added to an existing food web due to speciation events, whilst species become extinct due to coevolution and competition. We study the dynamics of species-diversity in Webworld on a macro-evolutionary time-scale. Coevolutionary interactions are strong enough to cause continuous overturn of species, in contrast to our previous Webworld simulations with simpler population dynamics. Although there are significant fluctuations in species diversity because of speciation and extinction, very large-scale extinction avalanches appear to be absent from the dynamics, and we find no evidence for self-organized criticality.

  20. How and for whom does web-based acceptance and commitment therapy work? Mediation and moderation analyses of web-based ACT for depressive symptoms

    OpenAIRE

    Pots, Wendy T.M.; Trompetter, Hester R.; Schreurs, Karlein M. G.; Bohlmeijer, Ernst T.

    2016-01-01

    Background Acceptance and Commitment Therapy (ACT) has been demonstrated to be effective in reducing depressive symptoms. However, little is known how and for whom therapeutic change occurs, specifically in web-based interventions. This study focuses on the mediators, moderators and predictors of change during a web-based ACT intervention. Methods Data from 236 adults from the general population with mild to moderate depressive symptoms, randomized to either web-based ACT (n = 82) or one of t...

  1. Using Maps in Web Analytics to Evaluate the Impact of Web-Based Extension Programs

    Science.gov (United States)

    Veregin, Howard

    2015-01-01

    Maps can be a valuable addition to the Web analytics toolbox for Extension programs that use the Web to disseminate information. Extension professionals use Web analytics tools to evaluate program impacts. Maps add a unique perspective through visualization and analysis of geographic patterns and their relationships to other variables. Maps can…

  2. WebQuests in special primary education: Learning in a web-based environment

    NARCIS (Netherlands)

    Kleemans, M.A.J.; Segers, P.C.J.; Droop, W.; Wentink, W.M.J.

    2011-01-01

    The present study investigated the differences in learning gain when performing a WebQuest with a well-defined versus an ill-defined assignment. Twenty boys and twenty girls (mean age 11; 10), attending a special primary education school, performed two WebQuests. In each WebQuest, they performed eit

  3. Research on Web Usability Evaluation Based on Ontology%本体模式下 Web 可用性评估研究

    Institute of Scientific and Technical Information of China (English)

    何伟; 李霜

    2015-01-01

    Web 可用性是衡量 Web 应用能力的一个重要指标,指导着 Web 的设计和发展。本文提出了一个本体模式下 Web 可用性评估的框架,在该框架下研究了利用 Web 内容本体进行 Web 内容可用性评估的方法。该方法通过构建 Web 内容本体,在深度和广度指标下,对 Web 内容的主题覆盖以及内容覆盖进行评估。实证分析得出,该方法对Web 内容可用性评估有较好的效果。%Web usability is an important index to measure the Web application ability and to guide the design and development of Web .This paper presents a framework of Web usability evaluation based on ontology ,and proposes a method for evaluating usability of Web content using ontology of Web content under the framework . It exploits constructing the ontology of Web content to evaluate the topic coverage and coverage of Web content using the index of breadth and depth .The experimental results show that the method has a good effect on evaluating usability of Web content .

  4. Development, implementation and pilot evaluation of a Web-based Virtual Patient Case Simulation environment – Web-SP

    Directory of Open Access Journals (Sweden)

    Boberg Jonas

    2006-02-01

    Full Text Available Abstract Background The Web-based Simulation of Patients (Web-SP project was initiated in order to facilitate the use of realistic and interactive virtual patients (VP in medicine and healthcare education. Web-SP focuses on moving beyond the technology savvy teachers, when integrating simulation-based education into health sciences curricula, by making the creation and use of virtual patients easier. The project strives to provide a common generic platform for design/creation, management, evaluation and sharing of web-based virtual patients. The aim of this study was to evaluate if it was possible to develop a web-based virtual patient case simulation environment where the entire case authoring process might be handled by teachers and which would be flexible enough to be used in different healthcare disciplines. Results The Web-SP system was constructed to support easy authoring, management and presentation of virtual patient cases. The case authoring environment was found to facilitate for teachers to create full-fledged patient cases without the assistance of computer specialists. Web-SP was successfully implemented at several universities by taking into account key factors such as cost, access, security, scalability and flexibility. Pilot evaluations in medical, dentistry and pharmacy courses shows that students regarded Web-SP as easy to use, engaging and to be of educational value. Cases adapted for all three disciplines were judged to be of significant educational value by the course leaders. Conclusion The Web-SP system seems to fulfil the aim of providing a common generic platform for creation, management and evaluation of web-based virtual patient cases. The responses regarding the authoring environment indicated that the system might be user-friendly enough to appeal to a majority of the academic staff. In terms of implementation strengths, Web-SP seems to fulfil most needs from course directors and teachers from various educational

  5. A Web Based Approach to Integrate Space Culture and Education

    Science.gov (United States)

    Gerla, F.

    2002-01-01

    Our intention is to dedicate a large section of our web site to space education. As the national User Support and Operation Center (USOC) for the International Space Station, MARS Center is also willing to provide material, such as videos and data, for educational purposes. In order to base our initiative on authoritative precedents, our first step has been a comparative analysis between different space agency education web sites, such as ESA and NASA. As is well known, Internet is a powerful reality, capable of connecting people all over the world and rendering public a huge amount of information. The first problem, then, is to organize this information, in order to use the web as an efficient education tool. That is why studies such as User Modeling (UM), Human Computer Interaction (HCI) and Semantic Web have become more important in Information Technology and Science. Traditional search engines are unable to provide an optimal retrieval of contents really searched for by users. Semantic Web is a valid alternative: according to its theories, web information should be represented using metadata language. Users should be able and enabled to successfully search, obtain and study new information from web. Forging knowledge in an intelligent manner, preventing users from making errors, and making this formidable quantity of information easily available have also been the starting points for HCI methodologies for defining Adaptable Interfaces. Here the information is divided into different sets, on the basis of the intended user profile, in order to prevent users from getting lost. Realized as an adaptable interface, an education web site can help users to effectively retrieve the information necessary for their scopes (teaching for a teacher and learning for a student). For students it's a great advantage to use interfaces designed on the basis of their age and scholastic level. Indeed, an adaptable interface is intended not just for students, but also for teachers

  6. Post-launch analysis of the deployment dynamics of a space web sounding rocket experiment

    Science.gov (United States)

    Mao, Huina; Sinn, Thomas; Vasile, Massimiliano; Tibert, Gunnar

    2016-10-01

    Lightweight deployable space webs have been proposed as platforms or frames for a construction of structures in space where centrifugal forces enable deployment and stabilization. The Suaineadh project was aimed to deploy a 2 × 2m2 space web by centrifugal forces in milli-gravity conditions and act as a test bed for the space web technology. Data from former sounding rocket experiments, ground tests and simulations were used to design the structure, the folding pattern and control parameters. A developed control law and a reaction wheel were used to control the deployment. After ejection from the rocket, the web was deployed but entanglements occurred since the web did not start to deploy at the specified angular velocity. The deployment dynamics was reconstructed from the information recorded in inertial measurement units and cameras. The nonlinear torque of the motor used to drive the reaction wheel was calculated from the results. Simulations show that if the Suaineadh started to deploy at the specified angular velocity, the web would most likely have been deployed and stabilized in space by the motor, reaction wheel and controller used in the experiment.

  7. WEB 238 Courses Tutorial / indigohelp

    OpenAIRE

    neha

    2015-01-01

    WEB 238 Week 2 JavaScript Events WEB 238 Week 3 Cookies WEB 238 Week 4 Dynamic HTML WEB 238 Week 5 Web Programming Languages WEB 238 Week 1 DQs WEB 238 Week 2DQs WEB 238 Week 3DQs WEB 238 Week 4DQs WEB 238 Week 5DQs  

  8. Extracting Dynamic Dependencies between Web Services Using Vector Clocks

    NARCIS (Netherlands)

    Romano, D.; Pinzger, M.; Bouwers, E.

    2011-01-01

    Service Oriented Architecture (SOA) enables organizations to react to requirement changes in an agile manner and to foster the reuse of existing services. However, the dynamic nature of service oriented systems and their agility bear the challenge of properly understanding such systems. In particula

  9. Web Services Support for Dynamic Business Process Outsourcing

    NARCIS (Netherlands)

    Grefen, Paul; Ludwig, Heiko; Dan, Asit; Angelov, Samuil

    2003-01-01

    Outsourcing of business processes is crucial for organizations to be effective, efficient and flexible. To meet fast-changing market conditions, dynamic outsourcing is required, in which business relationships are established and enacted on-the-fly in an adaptive, fine-grained way unrestricted by ge

  10. Web-based (HTML5) interactive graphics for fusion research and collaboration

    International Nuclear Information System (INIS)

    Highlights: ► Interactive data visualization is supported via the Web without a browser plugin and provides users easy, real-time access to data of different types from various locations. ► Crosshair, zoom, pan as well as toggling dimensionality and a slice bar for multi-dimensional data are available. ► Data with PHP API can be applied: MDSplus and SQL have been tested. ► Modular in design, this has been deployed to support both the experimental and the simulation research arenas. - Abstract: With the continuing development of web technologies, it is becoming feasible for websites to operate a lot like a scientific desktop application. This has opened up more possibilities for utilizing the web browser for interactive scientific research and providing new means of on-line communication and collaboration. This paper describes the research and deployment for utilizing these enhanced web graphics capabilities on the fusion research tools which has led to a general toolkit that can be deployed as required. It allows users to dynamically create, interact with and share with others, the large sets of data generated by the fusion experiments and simulations. Hypertext Preprocessor (PHP), a general-purpose scripting language for the Web, is used to process a series of inputs, and determine the data source types and locations to fetch and organize the data. Protovis, a Javascript and SVG based web graphics package, then quickly draws the interactive graphs and makes it available to the worldwide audience. This toolkit has been deployed to both the simulation and experimental arenas. The deployed applications will be presented as well as the architecture and technologies used in producing the general graphics toolkit.

  11. Web-based (HTML5) interactive graphics for fusion research and collaboration

    Energy Technology Data Exchange (ETDEWEB)

    Kim, E.N., E-mail: kimny@fusion.gat.com [General Atomics, P.O. Box 85608, San Diego, CA (United States); Schissel, D.P.; Abla, G.; Flanagan, S.; Lee, X. [General Atomics, P.O. Box 85608, San Diego, CA (United States)

    2012-12-15

    Highlights: Black-Right-Pointing-Pointer Interactive data visualization is supported via the Web without a browser plugin and provides users easy, real-time access to data of different types from various locations. Black-Right-Pointing-Pointer Crosshair, zoom, pan as well as toggling dimensionality and a slice bar for multi-dimensional data are available. Black-Right-Pointing-Pointer Data with PHP API can be applied: MDSplus and SQL have been tested. Black-Right-Pointing-Pointer Modular in design, this has been deployed to support both the experimental and the simulation research arenas. - Abstract: With the continuing development of web technologies, it is becoming feasible for websites to operate a lot like a scientific desktop application. This has opened up more possibilities for utilizing the web browser for interactive scientific research and providing new means of on-line communication and collaboration. This paper describes the research and deployment for utilizing these enhanced web graphics capabilities on the fusion research tools which has led to a general toolkit that can be deployed as required. It allows users to dynamically create, interact with and share with others, the large sets of data generated by the fusion experiments and simulations. Hypertext Preprocessor (PHP), a general-purpose scripting language for the Web, is used to process a series of inputs, and determine the data source types and locations to fetch and organize the data. Protovis, a Javascript and SVG based web graphics package, then quickly draws the interactive graphs and makes it available to the worldwide audience. This toolkit has been deployed to both the simulation and experimental arenas. The deployed applications will be presented as well as the architecture and technologies used in producing the general graphics toolkit.

  12. A Cluster Based Approach for Classification of Web Results

    Directory of Open Access Journals (Sweden)

    Apeksha Khabia

    2014-12-01

    Full Text Available Nowadays significant amount of information from web is present in the form of text, e.g., reviews, forum postings, blogs, news articles, email messages, web pages. It becomes difficult to classify documents in predefined categories as the number of document grows. Clustering is the classification of a data into clusters, so that the data in each cluster share some common trait – often vicinity according to some defined measure. Underlying distribution of data set can somewhat be depicted based on the learned clusters under the guidance of initial data set. Thus, clusters of documents can be employed to train the classifier by using defined features of those clusters. One of the important issues is also to classify the text data from web into different clusters by mining the knowledge. Conforming to that, this paper presents a review on most of document clustering technique and cluster based classification techniques used so far. Also pre-processing on text dataset and document clustering method is explained in brief.

  13. Web-based sorption database (KAERI-SDB)

    International Nuclear Information System (INIS)

    Radionuclide sorption data is necessary for the safety assessment of radioactive waste disposal. However the accessibility to the nuclide sorption database is limited. The web-based sorption database (KAERI-SDB) was developed to provide sorption data in a convenient way. The development of the KAERI-SDB was achieved by improving the performance of pre-existing sorption DB programme (SDB-21C) and incorporating the user requirement. The KAERI-SDB was designed that users can access it by using a web browser. Main functions of the KAERI-SDB include (1) log-in/join, (2) search and store of sorption data and (3) scatter plot chart and index chart. It is expected that the KAERI-SDB is widely applied to the safety assessment of radioactive waste disposal by enhancing the accessibility to experts and practitioner related the nuclear industry and governmental administration. It is also expected that reliabilities for the radioactive waste disposal increased by opening the web-based sorption DB to public

  14. Product line based ontology development for semantic web service

    DEFF Research Database (Denmark)

    Zhang, Weishan; Kunz, Thomas

    2006-01-01

    Ontology is recognized as a key technology for the success of the Semantic Web. Building reusable and evolve-able ontologies in order to cope with ontology evolution and requirement changes is increasingly important. But the existing methodologies and tools fail to support effective ontology reuse...... and evolution. In this paper, we present a product line based reuseoriented ontology development methodology which integrates ontology development with design by reuse and design for reuse. The basic building block in our approach is the meta-ontology. In the first stage, reengineering of existing ontologies...... will lead to the initial implementation of the meta-onotologies using design by reuse and with the objective of design for reuse. After that step new ontologies could be generated by reusing these meta-ontologies. We demonstrate our approach with a Semantic Web Service application to show how to build...

  15. The Motor Virtual Experimental System Based on Matlab Web Technology

    Directory of Open Access Journals (Sweden)

    Shoucheng Ding

    2010-12-01

    Full Text Available The article introduced the system’s construction thought, structure, configuration and web technology based on matlab. It focused on the virtual experiment of direct-current motor mechanical properties. The system’s architecture was browser/server (B/S mode. It adopted the active control technology and the matlab web server to develop the virtual experiments. The experiment results show that the system had achieved remote visualization visit without the time and space constraints, and had been characteristics of experimental results visualization and parameter adjustment easy. The system makes full use of multimedia network resources, and breaks the traditional model of motor experiment teaching, and reduces experimental costs, so it has been a better application prospects.

  16. A Web-Based Monitoring System for Multidisciplinary Design Projects

    Science.gov (United States)

    Rogers, James L.; Salas, Andrea O.; Weston, Robert P.

    1998-01-01

    In today's competitive environment, both industry and government agencies are under pressure to reduce the time and cost of multidisciplinary design projects. New tools have been introduced to assist in this process by facilitating the integration of and communication among diverse disciplinary codes. One such tool, a framework for multidisciplinary computational environments, is defined as a hardware and software architecture that enables integration, execution, and communication among diverse disciplinary processes. An examination of current frameworks reveals weaknesses in various areas, such as sequencing, displaying, monitoring, and controlling the design process. The objective of this research is to explore how Web technology, integrated with an existing framework, can improve these areas of weakness. This paper describes a Web-based system that optimizes and controls the execution sequence of design processes; and monitors the project status and results. The three-stage evolution of the system with increasingly complex problems demonstrates the feasibility of this approach.

  17. Autonomous matchmaking web services

    OpenAIRE

    Yu, Hong Qing; Dietze, Stefan; Benn, Neil

    2010-01-01

    Current Semantic Web Services research investigates how to dynamically discover assemble and invoke Web services. Despite many research efforts, Semantic Web Services are still not fully recognized in industry. One important reason is the dissevered description layers of syntax and semantics. In other words, semantics is only useful for a service broker to discover services whereas service requesters still need to invoke services based on syntactic descriptions. In this paper, we view semanti...

  18. Perl and Apache Your visual blueprint for developing dynamic Web content

    CERN Document Server

    McDaniel, Adam

    2010-01-01

    Visually explore the range of built-in and third-party libraries of Perl and Apache. Perl and Apache have been providing Common Gateway Interface (CGI) access to Web sites for 20 years and are constantly evolving to support the ever-changing demands of Internet users. With this book, you will heighten your knowledge and see how to usePerl and Apache to develop dynamic Web sites. Beginning with a clear, step-by-step explanation of how to install Perl and Apache on both Windows and Linux servers, you then move on to configuring each to securely provide CGI Services. CGI developer and author Adam

  19. Accessibility of dynamic web applications with emphasis on visually impaired users

    Directory of Open Access Journals (Sweden)

    Kingsley Okoye

    2014-09-01

    Full Text Available As the internet is fast migrating from static web pages to dynamic web pages, the users with visual impairment find it confusing and challenging when accessing the contents on the web. There is evidence that dynamic web applications pose accessibility challenges for the visually impaired users. This study shows that a difference can be made through the basic understanding of the technical requirement of users with visual impairment and addresses a number of issues pertinent to the accessibility needs for such users. We propose that only by designing a framework that is structurally flexible, by removing unnecessary extras and thereby making every bit useful (fit-for-purpose, will visually impaired users be given an increased capacity to intuitively access e-contents. This theory is implemented in a dynamic website for the visually impaired designed in this study. Designers should be aware of how the screen reading software works to enable them make reasonable adjustments or provide alternative content that still corresponds to the objective content to increase the possibility of offering faultless service to such users. The result of our research reveals that materials can be added to a content repository or re-used from existing ones by identifying the content types and then transforming them into a flexible and accessible one that fits the requirements of the visually impaired through our method (no-frill + agile methodology rather than computing in advance or designing according to a given specification.

  20. Demographic-Based Content Analysis of Web-Based Health-Related Social Media

    OpenAIRE

    Sadah, Shouq A; Shahbazi, Moloud; Wiley, Matthew T; Hristidis, Vagelis

    2016-01-01

    Background An increasing number of patients from diverse demographic groups share and search for health-related information on Web-based social media. However, little is known about the content of the posted information with respect to the users’ demographics. Objective The aims of this study were to analyze the content of Web-based health-related social media based on users’ demographics to identify which health topics are discussed in which social media by which demographic groups and to he...