A grande quantidade de informações eletrônicas disponíveis, e a crescente modificação do público da Computação, devido, principalmente, à redução dos custos de equipamentos de informática e ao surgimento da rede Internet, acentuaram a necessidade do uso de ferramentas de consulta com acesso rápido e adaptado às características dos usuários. Adicionalmente, como conseqüência do surgimento da rede Internet e da crescente expansão das redes de computadores, estão sendo desenvolvidos, cada vez mais, sistemas de suporte ao trabalho em grupo, os quais são atualmente muito encontrados em ambientes de ensino, a fim de facilitar o processo de ensino-aprendizagem. Um exemplo de ambiente de ensino onde podemos perceber todos os fatores acima citados é o Museu de Ciências e Tecnologia da PUCRS (MCT). Este Museu possui um amplo conjunto de informações armazenadas em bases de dados, e o interesse do público pela consulta a tais bases vem crescendo de forma acentuada. Neste sentido, SAGRES - um sistema com apresentação adaptável de informações e suporte à interação em grupo é um ambiente construído sobre a Internet, o qual possibilita a apresentação das bases de dados do MCT de forma adaptada às características de um ou mais visitantes. De acordo com o nível de experiência, as preferências e as atividades apresentadas pelos visitantes, o sistema determina o conjunto de links apropriados e apresenta-os em uma página HTML (HyperText Markup Language) resultante. Além da adaptação da apresentação das informações, o sistema SAGRES também apóia o aprendizado, explorando aspectos relevantes para a interação entre o visitante e o computador, e, também, entre um conjunto de visitantes, pois a interação pode ocorrer de forma individual ou através de turmas de alunos. Deste modo, é possibilitada a comunicação entre os participantes da turma que, ao compartilharem experiências, duvidas e soluções, podem obter um aprendizado mais consciente e permanente. 0 objetivo final desta pesquisa é a implementação do sistema SAGRES, o qual permite que grupos de visitantes interajam ao mesmo tempo em locais geograficamente distantes. Tal interação é realizada de forma adaptada aos objetivos, ao nível de experiência e às preferências de um visitante e/ou grupo de visitantes, os quais podem assumir três papéis distintos: gerente de turma (responsável em especificar as características de uma turma de alunos), aluno de turma (executa o conjunto de ações especificadas anteriormente pelo gerente) e visitante individual (responsável em definir suas características particulares e, com elas, interagir com o sistema). Por sua vez, o processo de cooperação pode ocorrer entre os componentes de uma turma ou entre todos os usuários do Sistema, os quais podem editar documentos e trocar mensagens, a fim de possibilitar o compartilhamento de experiências. / The great amount of electronical information available today, and the growing and changing users of Computer Science mainly due to cost cuts on computer equipment and the emergence of Internet reinforced the need of tools providing fast access to information and adapted to user's characteristics. As a consequence of the emergence of Internet and the growing expansion of computer networks, systems for Computer Supported Cooperative Work in learning environments have been developed in order to facilitate the teaching-learning process. An example of learning environment where all aspects below can be observed is the Museum of Science and Technology (MCT) at PUCRS. In this museum there is a comprehensive amount of information stored on databases and visitor's interest in querying these bases has been growing. SAGRES - an adaptable information presentation and work group support interaction system is a tool built on top of the Internet which enables the presentation of MCT databases concerning visitor's traits. According to visitors experience levels and preferences and intended activities the system determines the group of appropriate links and presents it on a resulting HTML page (HyperText Markup Language). Besides the adaptation in presenting the information, the system supports the learning process by exploring important aspects for interaction between visitor and computer and also among visitors since interaction can occur individually or in groups of students. Thus, communication is enabled among students and as a result they may share experiences, doubts and solutions, and consequently achieve a more effective and conscious learning process. Therefore, the final aim of this research is the development of SAGRES, a system which allows groups of visitors to interact at the same time in different places all over the world. Such interaction is accomplished according to objectives, experience level and preferences of visitors that can have three different roles: group manager (responsible for specifying characteristics of group of students), student group (perform group of actions predetermined by the group manager) and individual visitor (in charge of defining particular traits and interacting with the system). Furthermore, Cooperative Processes may occur among all system users who can edit documents and exchange messages in order to share experiences.

The World Wide Web provides a well standing environment in any kind of organizations for exposing online products and services. However, no one ensures that web products or services which provided by organizations or enterprises, would receive the proper visibility and accessibility by the internet users. The process of Search Engine Optimization examines usability in design, architecture and content that an internet-based system has, for improving its visibility and accessibility in the web. Successful SEO process in an internet-based system, which is set under the paternity of an organization, ensures higher recognition, visibility and accessibility for the web services that the system provides to internet users. The aim of this study characterized with a trinity of axes. In the first axe, an internet-based system and the web services that provides is examined in order to understand its initial situation regarding its visibility and accessibility in the web. In the second axe, the study follows a user-centric approach on how and in what way the examined system could be improved based on its users’ needs and desires. After the encapsulation of needs and desires that the users expressed as regards the usability of the system in design, architecture and content, the third axe takes place. In the third axe, the extracted needs and desires of users are implemented in the under-examined system, in order to understand if its visibility and accessibility has improved in the World Wide Web.For the completion of this trinity of axes, the Soft Systems Methodology approach is adopted. SSM is an action-oriented process of inquiry which deals with a problematic situation from the Finding Out about the situation through the Taking Action to improve it. Following an interpretative research approach, ten semi-structured interviews take place in order to capture all the participants’ perceptions and different worldviews regarding of what are the changes that they need and desire from the examined system. Moreover, in this study, the conduction of three Workshops, constitute a cornerstone for implementing systemically desirable and culturally feasible changes where all participants can live with, in order to improve system’s visibility and accessibility in the internet world. The results indicate that the adoption of participants’ needs and desires, improved the levels of usability, visibility and accessibility of the under examined internet-based system. Overall, this study firstly contributes to expand the knowledge as regards the process of improving the visibility and accessibility of internet-based systems and their web services in the internet world, based on a user-centric approach. Secondly, this study works as a practical toolbox for any kind of organization which intends to improve the visibility and accessibility of its current or potential web services in the World Wide Web.

This project is dealing with creating of system for e-learning support. It describes problematics of e-learning, explains meaning of this term and describes its advantages and disadvantages. The objectives were to create an application suitable for electronic learning, which could illustrate specifications of restrictions of the system objects. This means to create an application, where is explained the problem of OCL in that kind of format, which reacts the structure and the form of application used for e-learning. I meet the program languages of OCL and UML 2.0. I read over the CASE Rational Rose environment and meet the e-learning problem, too. These are the knowledges, which I used while I was creating my e-learning application.

The main objective of this work is to design and implement an application that can be used as an aid for the education of programming essentials. Particularly, the attention focuses on the domain of dynamic data structures. The target application will be implemented with the use of web technologies so that it can be run in an ordinary WWW browser. First of all, a brief introduction recapitulates the data structures to be covered. Then the work summarizes the usable technologies available within the web browsers with the focus on the particular technology (which is DHTML) that will become the target platform. The most significant part of this work then discusses the design of the final application. This rather theoretical part is then followed by the description of the practical implementation. A short user manual is also included.

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Vortragsfolge Prof. Uwe Huebner: Metacomputing - neue Aufgabenverteilung im Netz Dr. Wolfgang Riedel: Was nuetzt uns SGML Sven Graupner: What's up in Operating System Research Sven Koehler: IP Security (nach RFC 1825) Holger Trapp: Kryptographisch gesicherte Kommunikation und Datenhaltung Dr. Joerg Anders: ATM-Eine kritische Betrachtung Guenther Fischer: Cacheserver-Hierarchien Frank Richter: Ein neuer WWW-Server fuer www.tu-chemnitz.de Steffen Brose: Web-Zugang zu DQS Jens Kraizci, Volker Holfeld: Wie weiter mit dem CSN? Jan Wunderlich: Harvest Michael Hasenstein: Datenbank-Klienten auf Java-Basis Andreas Koehler: Form-based File Upload in HTML Gerd Heide: BROADWAY - Interaktivitaet im WWW mittels X-Protokoll Matthias Ehrig: NFS 2 - Moeglichkeiten und Grenzen Ronald Koehler: NFS 3 Christoph Ziegler: HSM - Was verbirgt sich dahinter? Kai Zscheile: Hardware-Loesungen fuer HSM Matthias Clauss: Vergleich und Bewertung von HSM-Loesungen Thomas Mueller: Fileserving an der TUCZ Karsten Baensch: AFS-Loesung fuer die Softwareumgebung der Parsytec-Maschinen Joern Wohlrab: Alternative verteilte Filesysteme Jens Junghaenel: Integration von PC's mittels Samba Merten Schumann: Archivierung elektronisch publizierter Dokumente Michael Tautenhahn: Fast Ethernet Jens Wagner: Firmenadressverwaltung am URZ Dr . Wolfgang Riedel: Neues aus der TeX-Welt (METAPOST, lyx) Carsten Mund: Untersuchung von Einflussfaktoren auf SPEC CINT- und CFP-Benchmarks

国立情報学研究所で電子化したコンテンツを使用している。

Recent developments in embedded systems give robots access to the Internet and make them more flexible and capable of performing more complex applications. However, these robots are still limited in terms of size, CPU power, storage resources and memory. Consequently, these robots have only been manufactured for certain specific applications and cannot be re-used for other applications. This presents us with a challenge to design a software framework - Robot Colony. The Robot Colony enables robots to be suitable for a wide range of applications, not originally received from manufacturers, to achieve greater functionality, flexibility and utility. This research outlines the architecture and functionality of the Robot Colony to support the collaboration between devices in the P2P community and also analyse the JXTA platform, which was the framework originally proposed. Lastly we present a customized P2P architecture that specifically addresses the interaction betweensoftware components across the network. We further discuss the following technologies applied in theframework: * XML-based Directory Service Provider * HTTP-based publish/describe control commands * Remote Process Invoke To fully complete the project, a thorough evaluation of the framework based on either the JXTAplatform or the customized P2P channel has been conducted. This evaluation provides basic statistics data for the proposed framework design and implementation. Further more, we have presented a realtime Demo at the Smart Device lab of the Queensland University of Technology.

Esta pesquisa refere-se à análise da utilização do comércio eletrônico (CE) por parte de grandes empresas da região sul do Brasil. Justifica-se a escolha porque pesquisas recentes indicam que as empresas brasileiras ainda não utilizam plenamente as várias possibilidades oferecidas pela Tecnologia de Informação em seus negócios e seus administradores ainda não têm em mente muitas vantagens proporcionadas pelo CE em relação aos canais de venda tradicionais. Há, portanto um campo oportuno de negócios a ser explorado. A pesquisa visou avaliar o estágio de utilização do CE, de modo a verificar aspectos de adoção tecnológica e relacionamento com clientes e fornecedores, a adequação de produtos e serviços ao novo canal, assim como a estratégia e o comprometimento organizacional, a partir do referencial teórico e baseada em um foco regional. Através da lista divulgada anualmente pela Revista Expressão, sobre as 300 Maiores Empresas do Sul, conduziu-se um estudo quantitativo exploratório com executivos da área de Informação, que pudesse fornecer subsídios para processos de tomada de decisão por parte das empresas em relação ao CE. Os resultados indicam que são empresas que atuam em setores tradicionais da economia e que ainda não estão conscientes das possibilidades trazidas por processos de CE, embora já se observe o surgimento de vantagens competitivas através da adoção destes processos, no que se refere ao contato entre empresas e a alianças mais sólidas entre os membros da cadeia produtiva.