In the domain of Web Services, it is not uncommon to find redundant services that provide functionalities to the clients. Services with the same functionality can be clustered into a group of redundant services. Respectively, if a service offers different functionalities, it belongs to more than one group. Having various Web Services that are able to handle the client's request suggests the necessity of a mechanism that selects the most appropriate Web Service at a given moment of time. <p>This thesis presents an approach, Virtual Web Services Layer, for dynamic service selection based on virtualization on the server side. It helps managing redundant services in a transparent manner as well as allows adding services to the system at run-time. In addition, the layer assures a level of security since the consumers do not have direct access to the Web Services. <p>Several selection techniques are applied to increase the performance of the system in terms of load-balancing, dependability, or execution time. The results of the experiments show which selection techniques are appropriate when different QoS criteria of the services are known and how the correctness of this information influences on the decision-making process.

Problems related to web application security comes in many ways, one example is inexperience programmers but not only in the way they code and program but also which language and structure they use to code. Not only programmers but Software companies left holes in the software they developed of course without intention.Because is proven that most of the vulnerabilities start in the web application side, as developers we need to follow certain principles, test our code and learn as much as possible about the subject, as a foundation of web application security in order to know how to prevent issues to the most significant treats.The penetration test aimed to help the IT business to discover vulnerabilities in their system ensure their integrity and continue further in the web application security process. The vulnerability research perform in this report is the introduction of a big work that is under continuity for the company.Finally the success of following security standards, process and methodologies applied on this field is considered the best approach to ensure web application security and priceless information you can benefit from.

Dans cette thèse, nous abordons les problématiques liées à la gestion de l'évolution des ontologies, dans le cadre défini par le Web sémantique. Nous le faisons en développant l'idée qu'une « bonne évolution » est celle qui, en plus de préserver la consistance de l'ontologie évoluée, préserve aussi l'intégrité de ce qui repose déjà sur l'ontologie. Dans notre contexte, ceci est le référencement sémantique des ressources. Ce dernier aspect nécessite toutefois une connaissance approfondie des changements apportés à l'ontologie. Sans cette connaissance, il nous serait impossible d'identifier les effets de l'évolution sur le référencement sémantique et donc, de maintenir l'accès et l'interprétation des ressources au moyen de l'ontologie évoluée. À l'heure actuelle, très peu de travaux de recherche proposent des solutions pour la journalisation des changements (et leur identification après l'évolution d'ontologie). Encore moins nombreux sont les travaux qui analysent les effets de l'évolution sur les ressources référencées et aucun, à notre connaissance, ne propose des solutions concrètes pour la résolution des effets problématiques, conduisant à une perte d'accès aux ressources, par exemple. Dans cette thèse, nous apportons des solutions novatrices pour combler ces lacunes. Nous proposons une approche de joumalisation des changements, élémentaires et complexes, apportés à une version d'ontologie VN pour obtenir une nouvelle version VN+1. Cette approche est fondée sur un modèle uniformisé, mais aussi riche sémantiquement, car il a comme base une ontologie des changements, également développée dans cette thèse. Nous fournissons aussi un formalisme de représentation des changements, semi-compatible avec l'OWL, qui rend interopérable et partageable l'historique des changements. De même, nous contribuons de façon originale à l'avancement de la problématique du Web sémantique en proposant un ensemble de stratégies de modification du référencement sémantique affecté par l'évolution des ontologies. Ces stratégies sont fondées sur l'analyse des types de changement et de leur impact sur l'accès aux ressources référencées, mais aussi sur l'interprétation de celles-ci au moyen de la nouvelle version de l'ontologie. Nous regroupons toutes ces solutions dans un cadre, intégrateur et modulaire, composé du système CHB (ChangeHistoryBuilder), pour la gestion de l'historique des changements, mais aussi du système SAM (SemanticAnnotationModifier), pour la gestion du référencement sémantique des ressources. L'originalité de ce cadre s'impose par le fait que, loin d'être dépourvu de toute intervention humaine, il s'incarne dans une société distribuée d'agents humains et logiciels qui s'échangent des informations et des services pendant, mais surtout après l'évolution des versions d'ontologie. Soulignons aussi qu'il s'est précisé pendant notre avancement dans la conception d'une méthodologie d'évolution des ontologies, Ceci fait de notre cadre une réponse pertinente aux besoins technologiques de notre méthodologie, également proposée dans cette thèse. ______________________________________________________________________________ MOTS-CLÉS DE L’AUTEUR : Web sémantique, Évolution des ontologies, Méthodologie, Journalisation des changements, Référencement sémantique évolutif.

Our employer, Gaddad, is a tattoo and piercing community that was created in 2006 with the basic idea to make it easier for people to get in touch with the tattoo artists and piercers from all over Sweden. With the homepage’s popularity at 2009 they decided to expand with the news page Inkzine. 2011 they contacted us with a plan to expand the homepage to Europe and then merge their two sites under the name Inkzine.The goal of this project was to create design suggestions for Gaddad / Inkzine that both the administration and the current users liked and would consider implementing on the website. In order to evaluate the current design and our suggestions we decided to use two questionnaires . The first questionnaire evaluated the currentdesign to provide us with information for the redesign. The second questionnaire evaluated our new suggestions.With these questionnaire we also carried out an analysis to see the differences in opinions among the users and also between the administration and the users.We also investigated other community homepages, company homepages that had been internationalized, and other tattoo homepages. To see what others had done to adapt to the international market and to investigate the design of tattoo homepages.We also did literary studies in redesign and internationalization, in order to obtain a theoretical foundation for our work.The results of the investigation of other homepages showed that in order to perform an internationalization of a web site no major changes to the looks were necessary, only linguistic changes. The results of our questionnairesshowed that users had in most cases put the majority of their votes on

This master thesis work was done at Ipendo Systems in Linköping, a company that makes an intellectual property management system called Ipendo Platform. The master thesis describes the design and development of an extension to a web based solution to work as desktop application and demonstrating the solution with an Outlook plugin. The goal was to improve the workflow for the user when handling documents received by mail and also find and evaluate a model for product integration that could be re-used for future projects. The result of the master thesis is an Outlook plugin and a web service that exposes part of Ipendo Platform functionality in a service layer. As a final test the solution was tested in a production environment to simulate real world usage. The report provides conclusions about the pros and cons of this kind solution and how the current design and implementation of Ipendo Platform has affected the outcome.

In the domain of Web Services, it is not uncommon to find redundant services that provide functionalities to the clients. Services with the same functionality can be clustered into a group of redundant services. Respectively, if a service offers different functionalities, it belongs to more than one group. Having various Web Services that are able to handle the client's request suggests the necessity of a mechanism that selects the most appropriate Web Service at a given moment of time. <p>This thesis presents an approach, Virtual Web Services Layer, for dynamic service selection based on virtualization on the server side. It helps managing redundant services in a transparent manner as well as allows adding services to the system at run-time. In addition, the layer assures a level of security since the consumers do not have direct access to the Web Services. <p>Several selection techniques are applied to increase the performance of the system in terms of load-balancing, dependability, or execution time. The results of the experiments show which selection techniques are appropriate when different QoS criteria of the services are known and how the correctness of this information influences on the decision-making process.

Large rivers in North America have been subjected to a variety of hydrologic alterations that have negatively impacted aquatic fauna. These impacts have triggered restoration efforts, including management of flows, to restore or maintain ecological integrity. Ecological data relevant to flow management and habitat restoration is scarce, and conceptual models of ecosystem function have been widely applied to large rivers despite a lack of quantitative evaluation of these models. Here, I examine demographic and trophic dynamics of fishes with divergent life histories and trophic guilds in relation to habitat heterogeneity and flow variability in a relatively unaltered floodplain system: the Brazos River, Texas. Reproductive activity of fishes with three divergent life history strategies was positively associated with long-term river hydrology, although species with alternate strategies exploited different portions of the hydrograph (peak flow versus increasing flow). Despite the positive association with hydrology, low-flow periods were favorable for recruitment, and food resources for larvae and juveniles were denser during these periods. Some species used both oxbow and channel habitats during some point in their life cycle, whereas other species appeared to be almost entirely restricted to one habitat type. Terrestrial C3 macrophytes accounted for a significant fraction of the biomass of most consumer species examined. Small-bodied species in oxbow lakes assimilated large fractions of biomass from benthic algae, whereas this pattern was not observed in the river channel. Frequent flow variations in the river channel may reduce algal standing stocks, and significant contributions from autochthonous algal sources may only occur during low-flow periods. Trophic positions of detritivores indicated that terrestrial carbon sources were assimilated, for the most part, via invertebrates rather than by direct consumption. My results indicate that current conceptual models are too vague to provide accurate predictions for restoration strategies in rivers with variable flow regimes. Flow and habitat management strategies that focus on reproducing key features of historical fluvial dynamics are likely to be more successful than strategies that focus on single indicator species or flow dynamics that differ from the historical hydrograph.

Information collection and discovery tasks involve aggregation and manipulation of information resources. An information resource is a location from which a human gathers data to contribute to his/her understanding of something significant. Repositories of information resources include the Google search engine, the ACM Digital Library, Wikipedia, Flickr, and IMDB. Information discovery tasks involve having new ideas in contexts of information collecting. The information one needs to collect is large and diverse and hard to keep track of. The heterogeneity and scale also make difficult writing software to support information collection and discovery tasks. Metadata is a structured means for describing information resources. It forms the basis of digital libraries and search engines. As metadata is often called, "data about data," we define meta-metadata as a formal means for describing metadata as an XML based language. We consider the lifecycle of metadata in information collection and discovery tasks and develop a metametadata architecture which deals with the data structures for representation of metadata inside programs, extraction from information resources, rules for presentation to users, and logic that defines how an application needs to operate on metadata. Semantic actions for an information resource collection are steps taken to generate representative objects, including formation of iconographic image and text surrogates, associated with metadata. The meta-metadata language serves as a layer of abstraction between information resources, power users, and application developers. A power user can enhance an existing collection visualization application by authoring meta-metadata for a new information resource without modifying the application source code. The architecture provides a set of interfaces for semantic actions which different information discovery and visualization applications can implement according to their own custom requirements. Application developers can modify the implementation of these semantic actions to change the behavior of their application, regardless of the information resource. We have used our architecture in combinFormation, an information discovery and collection visualization application and validated it through a user study.

Abstract Because the Internet reaches beyond borders and the World Wide Web (WWW) blossoms everywhere, taking such convenience, instructors and students may participate teaching and learning activities anytime in anyplace. Thus, the traditional instruction has been changed tremendously, not only in the way that knowledge is presented, but also in the way that instructions and feedbacks are exchanged, as well as in the environment that has been changed from concrete classrooms to the virtual world. Instruction via the Internet, or the Web-based Instruction, has been a trend. This new instruction has impacts the traditional instruction a lot. Therefore, we¡¦d like to discuss whether the Web-based instruction could replace the traditional instruction. This research refers the comparison method from Bereday, George Z.F. 1920-1983, also makes documents analysis to compare and evaluate the characteristics between the traditional instruction and the Web-based instruction in teaching media, class management and assessment. We expect this research and its suggestions may provide a reference for the development of the Web-based instruction and for the improvement of the traditional instruction in Taiwan. Thus, our future instruction may take advantages from both the Web-based instruction and the traditional way.

GIS (Geographic Information Systems) is gradually mature on the Internet, and the applications of the GIS, such as: living, entertainment, traffic, environment etc., are more extensive. People are very easy to get useful spatial information from Web GIS. SVG (Scalable Vector Graphics) was initiated by W3C (World Wide Web Consortium), it is an XML (eXtensible Markup Language)-based two-dimensional vector graphics standard on the internet. It is suitable to be used on the Web GIS. The research focuses on XML-based Web GIS including: spatial information and attribute data. The process to create a SVG system is discussed. Besides to write a software code for implementing a SVG system as a Web GIS, some functions were added to the system to promote the operating efficiency. Finally, two query applications were set up. One is Tapeng Bay to display fundamental setting up process and the other is Taipei school information query system to test the functions for SQL and statistical information. Keywords: Web GIS, XML, SVG, DOM