Submitted by Clebson Anjos (clebson.leandro54@gmail.com) on 2015-05-12T18:51:03Z No. of bitstreams: 1 arquivototal.pdf: 2037516 bytes, checksum: 86821fb356b5c1b1d54b6b1c895a3e44 (MD5) / Made available in DSpace on 2015-05-12T18:51:03Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 2037516 bytes, checksum: 86821fb356b5c1b1d54b6b1c895a3e44 (MD5) Previous issue date: 2015-02-26 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / Information is one of the society´s inputs and it highlights an increasing concern as to its retrieval, organization, storage and availability. Taking into account this reality, the current piece of research is motivated by the information representation in documents of permanent character on the web, once the information in this medium enables the information retrieval regardless of time and space, with the archivist´s participation as a mediator of information. For this reason, this piece of research was derived from the perception of the relevance of the colonial period documentation stored in the Waldemar Duarte Historical Archive belonging to the Cultural Space Foundation of Paraíba (FUNESC). In this sense, this study aims to identify a metadata pattern for the descriptive representation of the information of this documentation. It intends, specifically, to describe the historical context of the Waldemar Duarte Historical Archive and it identifies the procedures that represent this archive as well as it highlights the representative elements in both the Information Science and the Archival Science. Hence, this piece of research has empirical classification, with qualitative and quantitative approach, descriptive category, having the observation as tool for data collection so as to analyze the behavior of the historical archive´s users and collaborators as well as the documental analysis based on the research of 78 documents related to the Colonial Period in order to adapt the pattern to this sample. The purpose of this research is given in two main aspects: Descriptive Representation of Information and the Thematic Representation of Information. In the Descriptive Representation of Information, a metadata pattern was delimited based on the analysis of three patterns, being two archival patterns. The analysis of the patterns occurred due to the exclusion of common metadata, the comparison of metadata with the data found in the Colonial Period documentation and which pattern presents major coverage for the descriptive representation for the documents of permanent character. For the proposal of the Thematic Representation of Information, aspects that define the creation of indexation mechanisms, indexing policies, controlled vocabulary and abstracts were established for the Colonial Period documentation. Thus, the need for public powers is perceived while producing initiatives for the dissemination of their archives in a virtual environment favoring thus the emergence of new studies. The definition of a metadata pattern will contribute to the representation of documents from the Brazilian Colonial Period; this can be expanded for the documentation of the other historical periods stored in the Waldemar Duarte Historical Archive. / A informação é um dos insumos da sociedade e se evidencia uma preocupação acentuada quanto à sua captura, organização, armazenamento e disponibilização. Diante dessa realidade, o presente trabalho é motivado devido à representação da informação em documentos de caráter permanente na Web, uma vez que as informações neste meio possibilitam a recuperação informacional independentemente do tempo e espaço, tendo a participação do arquivista, enquanto mediador da informação. Por essa razão, esta pesquisa teve origem diante da percepção da relevância da documentação do Período Colonial armazenado no Arquivo Histórico Waldemar Duarte pertencente à Fundação Espaço Cultural da Paraíba- FUNESC. Nesse sentido, a pesquisa tem por objetivo a identificação de um padrão de metadados para a representação descritiva da informação dessa documentação. Especificamente visa descrever o contexto histórico do Arquivo Histórico Waldemar Duarte e identifica os procedimentos que representam seu acervo, bem como evidencia os elementos representativos na Ciência da Informação e Arquivologia. Posto isso, este trabalho tem classificação empírica, com a abordagem qualitativa e quantitativa, categoria descritiva, tendo como instrumento de coleta de dados a observação para averiguar o comportamento dos usuários e dos colaboradores do arquivo histórico, bem como a análise documental com base na investigação de 78 documentos referentes ao Período Colonial com vistas a adequar o padrão a esta amostra. A proposta nesta pesquisa é dada em dois pontos principais, sendo elas: Representação Descritiva da Informação e a Representação Temática da Informação. Na Representação Descritiva da Informação, foi delimitado um padrão de metadados com base na análise de três padrões, sendo dois padrões arquivísticos. A análise dos padrões deu-se diante da exclusão de metadados em comum, da comparação dos metadados com os dados encontrados no documento do Período Colonial e qual padrão apresenta maior cobertura para a representação descritiva para os documentos de caráter permanente. Para a proposta da Representação Temática da Informação, foram estabelecidos pontos que assentem para a criação de mecanismos de indexação, políticas de indexação, vocabulário controlado e resumos para a documentação do Período Colonial. Diante disso, percebe-se a necessidade dos poderes públicos em produzir iniciativas para a disseminação de seu acervo em ambiente Web, favorecendo assim o surgimento de novas pesquisas. A delimitação de um padrão de metadados contribuirá para a representação dos documentos do Período Colonial brasileiro, podendo ser expandido para a documentação dos demais períodos históricos armazenados no Arquivo Histórico Waldemar Duarte.

Made available in DSpace on 2014-06-11T19:29:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-08-21Bitstream added on 2014-06-13T19:26:56Z : No. of bitstreams: 1 rodolpho_er_me_sjrp.pdf: 574275 bytes, checksum: 043fcbc5983dd0afa9401355ed6da3b8 (MD5) / A construção de Objetos de Aprendizagem (OAs) é um importante processo de Educação a Distância. Padrões têm sido definidos com estruturas de metadados para favorecer a reutilização e portabilidade dos OAs, como SCORM, LOM, ARIADNE, entre outros. Mesmo assim, a portabilidade entre diferentes sistemas de e-Learning requerem conhecimentos específicos. A dificuldade aumenta quando se direciona a diferentes meios digitais e de comunicação, como ambientes da Web e da TV Digital Aberta (TVDA) – um meio alternativo de acesso à Educação que vem sendo integrado à vida dos brasileiros. Nesse contexto, o principal objetivo deste trabalho foi a investigação de um novo modelo, OAX, para implementação de OAs com portabilidade para ambientes Web e para a TVDA. O modelo, baseado em metadados e codificação Base64, foi definido com base na estrutura SCORM. Para a criação e gerenciamento dos OAs, segundo o modelo OAX, foi proposta a arquitetura de um sistema de autoria, SOAX – uma aplicação Web, composta por quatro componentes, visando: encapsulamento do átomo de conteúdo OAX, armazenamento do conteúdo, aplicativos de gerenciamento/visualização de conteúdo e APIs (Application Programming Interface) de importação e exportação para padrões de OAs. O sistema SOAX foi projetado com a finalidade de atender educadores com conhecimentos básicos de Informática, de forma que pudessem construir os OAs preocupados apenas com os aspectos didático-pedagógicos. O sistema converte automaticamente os OAs para os formatos de padrões de OAs e para ambientes da TVDA. Está disponível uma versão beta do SOAX. / The construction of Learning Objects (LOs) is an important process for distance education. Standards have been defined with metadata structures to enhance the reutilizability and portability of LOs, such as SCORM, LOM, ARIADNE, among others. The portability between different systems of e-Learning requires expert knowledge. The difficulty increases when different digital media and communication environments are used, for example: Web and Open Digital TV (ODTV) – an alternative means of access to education that is being integrated into daily life of Brazilians. In this context, the main goal of this work was to investigate a new model for implementation of LOs (OAX) with portability to Web and ODTV environments. The model was defined based on the SCORM standard and was based on metadata and base64 encoding. The architecture of an authoring system (SOAX) was proposed for the creation and management of LOs, according to the OAX model. SOAX is a Web application and is composed of four components for: encapsulation of the OAX content atom, content storage, applications of viewing/management of content and APIs (Application Programming Interface) for import and export LOs for standards formats. The SOAX system was designed for educators with basic knowledge of computer. So they could concentrate efforts on didactic-pedagogic aspects of the LOs. The system automatically converts the LOs for the formats of the LOs standards and ODTV environments. A beta version of SOAX is available.

Made available in DSpace on 2016-08-17T14:53:03Z (GMT). No. of bitstreams: 1 Roosewelt Lins.pdf: 1525522 bytes, checksum: d86a5be41b9380c24fb5a8b9bc673ec3 (MD5) Previous issue date: 2007-06-18 / The education mediated by technology is a tool used in academic and corporative environments. With advance of the Web, diverse environments of teaching and learning make possible the production and distribution of multimedia contents for the use of learners and teachers. However the contents access still is one of the main problems for the use and sharing between different applications. The document representation in Semantic Web is related to the use of metadata to describe resources. In Web-based education, diverses standards have been considered to provide sharing learning resources in distributed form. One believes that ontology use allows one better conceptualization and domain representation, making possible the formalization of the metadata schema for learning object management. One presents an Aggregation and Representation Content Model for conceptualization of a Semantic Learning Object Repository. The Aggregation Model makes use of standard LOM (Learning Object Metadata) to describe and add educational contents. The Content Representation Model is a Classification Schema based on SKOS (Simple Knowledge Organisation Systems) standard destined the specification of knowledge organisation systems in the Semantics Web. It was use OWL language (Web Ontology Language) for ontology construction and framework Jena for manipulation of the ontological model. In such a way, it argues concepts associates the educational technologies, perspectives and challenges for knowledge representation on the Web, and for the development of new generation of the Web. / A educação mediada por tecnologia é uma ferramenta cada vez mais utilizada em ambientes acadêmicos e corporativos. Com o avanço da Web, diversos ambientes de ensino-aprendizagem possibilitaram a produção e disponibilização de conteúdos multimídias para o uso de aprendizes e educadores. Todavia o acesso a estes conteúdos ainda é um dos principais problemas para o uso e compartilhamento entre diferentes aplicações. A representação de documentos na Web Semântica é uma técnica relacionada ao uso de metadados para descrever recursos, sendo uma solução para o problema de acesso a conteúdos na Web. No cenário da educação baseada na Web, diversos padrões de metadados têm sido propostos para proporcionar o compartilhamento de recursos de aprendizagem de forma distribuída. Acredita-se que o uso das ontologias permitirá uma melhor conceituação e representação do domínio, possibilitando desta forma uma formalização dos esquemas de metadados para gerenciamento de objetos de aprendizagem. Apresenta-se um Modelo de Agregação e Representação de Conteúdo para conceituação de um Repositório Semântico de Objetos de Aprendizagem. O Modelo de Agregação faz uso do padrão LOM (Learning Object Metadata) para descrever e agregar conteúdos educacionais. O Modelo de Representação de Conteúdos é um Esquema de Classificação baseado no padrão SKOS (Simple Knowledge Organisation Systems) destinado à especificação de Sistemas de Organização do Conhecimento na Web Semântica. Utilizou-se a metodologia METHONTOLOGY, linguagem OWL (Web Ontology Language) para construção da ontologia e o uso do framework Jena destinado à manipulação de modelo ontológico. Desta forma, discutem-se pressupostos associados à representação do conhecimento na Web, tecnologias educacionais, perspectivas e desafios para o desenvolvimento da nova geração da Web.

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-02-25T17:40:15Z No. of bitstreams: 1 gevaschaeferpereiramartins.pdf: 2682934 bytes, checksum: 33ec1a1ae839b115cb034d5d0518f377 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-03-03T13:32:32Z (GMT) No. of bitstreams: 1 gevaschaeferpereiramartins.pdf: 2682934 bytes, checksum: 33ec1a1ae839b115cb034d5d0518f377 (MD5) / Made available in DSpace on 2016-03-03T13:32:32Z (GMT). No. of bitstreams: 1 gevaschaeferpereiramartins.pdf: 2682934 bytes, checksum: 33ec1a1ae839b115cb034d5d0518f377 (MD5) Previous issue date: 2014-09-03 / As vantagens da utilização de jogos com objetivos educacionais podem ser consideradas como um consenso entre professores e alunos. No entanto, jogos sérios constituem-se objetos multimídia complexos e caros de se produzir. A natureza multidisciplinar dos jogos educacionais pressupõe o envolvimento e coordenação de uma equipe especializada. Com o objetivo de auxiliar no desenvolvimento de jogos educacionais é proposto o modelo computacional BROAD-PLG. O modelo é composto por uma arquitetura de alto nível, modelagens de domínio baseadas em características que descrevem três diferentes tipos dos jogos educacionais, e uma ferramenta de engenharia de aplicação, que permite instanciação de um arcabouço pronto para ser utilizado no desenvolvimento desses tipos de jogos. A separação de interesses divide o domínio de jogos educacionais em conjuntos de características que englobam aspectos educacionais, mecânica de jogos e elementos de gamificação. Ao final do trabalho são construídos três exemplos distintos de aplicações demonstrando esses três aspectos. Avaliando-se os exemplos pode-se concluir que o BROAD-PLG, apesar de estar na versão inicial, demonstra grande potencial para ser utilizado como uma ferramenta tanto na forma de geração de aplicações, quanto como referência na modelagem de domínio do problema. / The advantages of using games for educational purposes can be considered as a consensus among teachers and students. However, serious games constitute complex and expensive to produce multimedia objects. The multidisciplinary nature of educational games requires the involvement and coordination of a specialized team. With the objective of assisting in the development of educational games is proposed the computational model BROAD-PLG. The model consists of a high-level architecture, domain modeling based on features that describe three different faces of educational games and application engineering tool that allows instantiation of a framework ready to be used in game development. The separation of concerns splits the domain of educational games into sets of features that include educational aspects of game mechanics and gamification elements. At the end of the work three different application examples are constructed demonstrating these three aspects. In reviewing the examples it can be concluded that the broad-PLG despites being in the initial stage shows great potential to be used as a tool in generating applications as reference in modeling the problem domain.

De nos jours, les réseaux sociaux ont considérablement changé la façon dont les personnes prennent des photos qu’importe le lieu, le moment, le contexte. Plus que 500 millions de photos sont partagées chaque jour sur les réseaux sociaux, auxquelles on peut ajouter les 200 millions de vidéos échangées en ligne chaque minute. Plus particulièrement, avec la démocratisation des smartphones, les utilisateurs de réseaux sociaux partagent instantanément les photos qu’ils prennent lors des divers événements de leur vie, leurs voyages, leurs aventures, etc. Partager ce type de données présente un danger pour la vie privée des utilisateurs et les expose ensuite à une surveillance grandissante. Ajouté à cela, aujourd’hui de nouvelles techniques permettent de combiner les données provenant de plusieurs sources entre elles de façon jamais possible auparavant. Cependant, la plupart des utilisateurs des réseaux sociaux ne se rendent même pas compte de la quantité incroyable de données très personnelles que les photos peuvent renfermer sur eux et sur leurs activités (par exemple, le cas du cyberharcèlement). Cela peut encore rendre plus difficile la possibilité de garder l’anonymat sur Internet dans de nombreuses situations où une certaine discrétion est essentielle (politique, lutte contre la fraude, critiques diverses, etc.).Ainsi, le but de ce travail est de fournir une mesure de protection de la vie privée, visant à identifier la quantité d’information qui permettrait de ré-identifier une personne en utilisant ses informations personnelles accessibles en ligne. Premièrement, nous fournissons un framework capable de mesurer le risque éventuel de ré-identification des personnes et d’assainir les documents multimédias destinés à être publiés et partagés. Deuxièmement, nous proposons une nouvelle approche pour enrichir le profil de l’utilisateur dont on souhaite préserver l’anonymat. Pour cela, nous exploitons les évènements personnels à partir des publications des utilisateurs et celles partagées par leurs contacts sur leur réseau social. Plus précisément, notre approche permet de détecter et lier les évènements élémentaires des personnes en utilisant les photos (et leurs métadonnées) partagées au sein de leur réseau social. Nous décrivons les expérimentations que nous avons menées sur des jeux de données réelles et synthétiques. Les résultats montrent l’efficacité de nos différentes contributions. / Today, social networking has considerably changed why people are taking pictures all the time everywhere they go. More than 500 million photos are uploaded and shared every day, along with more than 200 hours of videos every minute. More particularly, with the ubiquity of smartphones, social network users are now taking photos of events in their lives, travels, experiences, etc. and instantly uploading them online. Such public data sharing puts at risk the users’ privacy and expose them to a surveillance that is growing at a very rapid rate. Furthermore, new techniques are used today to extract publicly shared data and combine it with other data in ways never before thought possible. However, social networks users do not realize the wealth of information gathered from image data and which could be used to track all their activities at every moment (e.g., the case of cyberstalking). Therefore, in many situations (such as politics, fraud fighting and cultural critics, etc.), it becomes extremely hard to maintain individuals’ anonymity when the authors of the published data need to remain anonymous.Thus, the aim of this work is to provide a privacy-preserving constraint (de-linkability) to bound the amount of information that can be used to re-identify individuals using online profile information. Firstly, we provide a framework able to quantify the re-identification threat and sanitize multimedia documents to be published and shared. Secondly, we propose a new approach to enrich the profile information of the individuals to protect. Therefore, we exploit personal events in the individuals’ own posts as well as those shared by their friends/contacts. Specifically, our approach is able to detect and link users’ elementary events using photos (and related metadata) shared within their online social networks. A prototype has been implemented and several experiments have been conducted in this work to validate our different contributions.

Die Arbeit sollte die technische Machbarkeit der Verwendung digitaler Metadaten in Geodateninfrastrukturen aufzeigen und wenn möglich prototypisch umsetzen. Dabei sollten die Metadaten über Topographische Karten, welche in dem Metainformationssystem GeoMIS.Sachsen und über einen entsprechenden Katalogdienst (CSW) verfügbar sind, in einem Geoportal visualisiert werden. Im Ergebnis wurde ein Workflow entwickelt und umgesetzt, welcher die Metadaten automatisch abruft, die Metadaten entsprechend transformiert und abschließend die Metadaten über einen Kartendienst (WMS) für beliebige Geoportale bereitstellt. Dadurch ist es möglich die Aktualität von bereits vorhanden Kartendiensten bzw. deren Daten abzufragen. Durch die zyklische Ausführung des Prozesses auf dem Server stehen dem Nutzer jederzeit aktuelle Blattschnittübersichten zur Verfügung. Darüber hinaus steht ebenfalls ein Kartendienst für Vektordaten bereit über den die Geometriedaten und zusätzliche Sachinformationen direkt abgerufen werden können. Außerdem wird ein direkter Verweis (Link) auf den entsprechenden Metadatensatz im GeoMIS.Sachsen angegeben. Weiterhin wurde eine Transformation entwickelt, welche die im XML vorliegenden Metadaten in eine SVG überführt. Diese interaktive Blattschnittübersicht kann direkt auf Webseiten eingebunden werden. Außerdem kann aus dem SVG Format wiederum automatisiert ein PDF Dokument erstellt werden. Die Arbeit konnte nachweisen, dass zukünftig eine doppelte und getrennte Datenführung von Metadaten und Blattschnittübersichten nicht notwendig ist. Die Verwendung der IT Standardtechnologie XSLT zur Transformation von XML Daten hat sich bewährt und ermöglicht auch die Unterstützung weiterer Formate wie z.B. XHTML, KML (google) oder XCPF. Der erarbeitete Ansatz ist auch für andere Geodaten wie z.B. Luftbilder, historische Karten oder Bebauungspläne anwendbar. Durch die Visualisierung der textbasierten Metadaten war außerdem eine Qualitätssicherung der Metadaten möglich.:1 Ziel des Projektes 2 Grundlagen 2.1 Geoportale 2.2 Geodienste 2.2.1 OGC WMS 2.2.2 MapServer 2.3 Metadaten 2.4 XSL Transformation 3 Entwurfsentscheidung 4 Implementierung 4.1 Verwendete Programme 4.2 Datenabfrage 4.3 Transformation 4.4 Aufsetzen eines WMS 4.4.1 Installation MapServer 4.4.2 Mapfile 4.4.3 HTML Template 4.4 Aktualisierung der Daten 5 Ergebnis und Anwendungsmöglichkeiten 6 Aufwand und Nutzen 6.1. Einarbeitung 6.2. Produktion 6. 3. Nutzen 7 Ausblick 7.1 Klassifizierung 7.2 Direkte Verlinkung zum GeoMIS.Sachsen 7.3 Anwendung auf weitere Daten 7.4 Bereitstellung als WFS 7.5 Direkte Anbindung der Datenbank des GeoMIS und ggf. on-the-fly Visualisierung 7.6 Bereitstellung der Daten als Download 7.7 Verknüpfung der Produktionsdaten mit dem GeoMIS 8 Quellenverzeichnis 8.1 Literaturquellen 8.2 Internetquellen ANHÄNGE A Übersicht der einzelnen Blattschnitte B Empfohlene Verzeichnisstruktur C Übersicht Transformationen D Übersicht MAP File E Übersicht HTML Templates F Installation des Map Server und Einrichtung des Web Map Service G Aufruf des Web Map Service I WFS / The work shows the technical feasibility of digital metadata within Spatial Data Infrastructures. The visualization of digital geo-metadata in geoportals was prototypical implemented. The use case was a map sheet index of topographical maps who is prepared automatically. Geo-metadata are described in the metadata information system GeoMIS.Sachsen and provided by a catalogue service (CSW). As a result a workflow was developed and implemented which calls the metadata automatically, transforms the metadata into GML and finally prepares the metadata through a web map service in geoportals. Thereby it is possible to analyze the actuality of the topographical maps through map sheet index. Because of the cyclical update of the data the map patterns are always up to date. There is also a map service for vector data (WFS) implemented which enables a user to directly retrieve additional factual information. Furthermore a direct URL to the metadataset in the GeoMIS.Sachsen is stated. Besides the GML transformation another one was developed, which converts the metadata in XML format into scalable vector graphics (SVG). This interactive map sheet index could be integrated directly on websites. It is also possible to create a PDF document automatically out of the SVG with appropriate software tools. By using the XSLT standard additional formats could also be served. For example a transformation of the XML source data into KML (Google), XHTML or XCPF is possible. This work demonstrates that there is no need for a separation of metadata and map sheet index any more. The usage of XSLT was profitable and supports a lot of formats. The workflow is also usable for other geo data like air photography, historical maps or development plans. In addition it is possible to use the workflow to visualize other metadata like resolution or prices of each map. Because of the visualization of the text based metadata a quality check of the data is possible.:1 Ziel des Projektes 2 Grundlagen 2.1 Geoportale 2.2 Geodienste 2.2.1 OGC WMS 2.2.2 MapServer 2.3 Metadaten 2.4 XSL Transformation 3 Entwurfsentscheidung 4 Implementierung 4.1 Verwendete Programme 4.2 Datenabfrage 4.3 Transformation 4.4 Aufsetzen eines WMS 4.4.1 Installation MapServer 4.4.2 Mapfile 4.4.3 HTML Template 4.4 Aktualisierung der Daten 5 Ergebnis und Anwendungsmöglichkeiten 6 Aufwand und Nutzen 6.1. Einarbeitung 6.2. Produktion 6. 3. Nutzen 7 Ausblick 7.1 Klassifizierung 7.2 Direkte Verlinkung zum GeoMIS.Sachsen 7.3 Anwendung auf weitere Daten 7.4 Bereitstellung als WFS 7.5 Direkte Anbindung der Datenbank des GeoMIS und ggf. on-the-fly Visualisierung 7.6 Bereitstellung der Daten als Download 7.7 Verknüpfung der Produktionsdaten mit dem GeoMIS 8 Quellenverzeichnis 8.1 Literaturquellen 8.2 Internetquellen ANHÄNGE A Übersicht der einzelnen Blattschnitte B Empfohlene Verzeichnisstruktur C Übersicht Transformationen D Übersicht MAP File E Übersicht HTML Templates F Installation des Map Server und Einrichtung des Web Map Service G Aufruf des Web Map Service I WFS

This thesis describes and analyzes the current state of environmental management of geographic data within geoinformation infrastructure of the Czech Republic in response to European legislation. The work is divided into four main parts. The first part deals with geoinformation infrastructure of the Czech Republic in its basic components due to the efficiency of the management of geographic data. Another part deals with the general characteristics of geospatial data underlying the description methods, organization and retrieval in the next section. The final part of its qualitative research describes in detail the management of geospatial data in the environmental sector, which is affected by the phenomenon of the implementation of INSPIRE and draws conclusions and recommendations. The work also supports the analysis of the availability of data sources for the implementation of the INSPIRE directive, the questionnaire used as a guide for research purposes, to illustrate the services Geoportal three pictures. Powered by TCPDF (www.tcpdf.org)

This work describes the long term preservation of digital documents, particularly websites. The aim of this work is to give an explanation of the long term preservation, to define the differences between various approaches and to describe long term preservation of web content possibilities such as migration or emulation. It also explains risks and challenges of these strategies. It discusses new problems which the long term preservation aim leads to. It also describes possible solutions as well as it describes the situation in selected significant foreign institutions. The main aim of this work is detailed analysis of long term preservation strategy in theNational Library of the Czech Republic, which is the only institution engaged in the preservation of Czech web. The process of data preparation, metadata creation and data storing in the long term repository of the Czech National Library is thoroughly described, including examples and their explanation. Future actions of long term preservation in the Czech Web Archive are articulated in the conclusion. Powered by TCPDF (www.tcpdf.org)

<p>Nowadays, Dynamic Geometry Software (DGS) is widely accepted as a tool for creating and presenting visually rich interactive teaching and learning materials, called dynamic drawings. Dynamic drawings are specified by writing expressions in functional domain-specific languages. Due to wide acceptance of DGS, there has arisen a need for their extensibility, by adding new semantics and visual objects (visuals). We have developed a programming framework for the Dynamic Geometry Software, SLGeometry, with a genericized functional language and corresponding expression evaluator that act as a framework into which specific semantics is embedded in the form of code annotated with metadata. The framework transforms an ordinary expression tree evaluator into an object-oriented one, and provide guidelines and examples for creation of interactive objects with dynamic properties, which participate in evaluation optimization at run-time. Whereas other DGS are based on purely functional expression evaluators, our solution has advantages of being more general, easy to implement, and providing a natural way of specifying object properties in the user interface, minimizing typing and syntax errors.LGeometry is implemented in C# on the .NET Framework. Although attributes are a preferred mechanism to provide association of declarative information with C# code, they have certain restrictions which limit their application to representing complex structured metadata. By developing a metadata infrastructure which is independent of attributes, we were able to overcome these limitations. Our solution, presented in this&nbsp; dissertation, provides extensibility to simple and complex data types, unary and binary operations, type conversions, functions and visuals, thus enabling developers to seamlessly add new features to SLGeometry by implementing them as C# classes annotated with metadata. It also provides insight into the way a domain specific functional language of dynamic geometry software can be genericized and customized for specific needs by extending or restricting the set of types, operations, type conversions, functions and visuals.Furthermore, we have conducted&nbsp; experiments with several groups of students of mathematics and high school pupils, in order to test how our approach compares to the existing practice. The experimental subjects tested mathematical games using interactive visual controls (UI controls) and sequential behavior controllers. Finally, we present a new evaluation algorithm, which was compared to the usual approach employed in DGS and found to perform well, introducing advantages while maintaining the same level of performance.</p> / <p>U dana&scaron;nje vreme softver za dinamičku geometriju (DGS) je &scaron;iroko prihvaćen kao alat za kreiranje i prezentovanje vizuelno bogatih interaktivnih nastavnih materijala i materijala za samostalno učenje, nazvanih dinamičkim crtežima. Kako je raslo prihvatanje softvera za dinamičku geometriju, tako je i rasla potreba da se oni pro&scaron;iruju, dodajući im novu semantiku i vizualne objekte. Razvili smo programsko okruženje za softver za dinamičku geometriju, SLGeometry, sa generičkim&nbsp; funkcionalnim jezikom i odgovarajućim evaluatorom izraza koji čini okruženje u kom su ugrađene specifične semantike u obliku koda označenog metapodacima. Ovo okruženje pretvara uobičajen evaluator stabla izraza u objektno orijentiran, te daje uputstva i primere za stvaranje interaktivnih objekata sa dinamičkim osobinama, koji sudeluju u optimizaciji izvr&scaron;enja tokom izvođenja. Dok se drugi DGS-ovi temelje na čisto funkcionalnim evaluatorima izraza, na&scaron;e rje&scaron;enje ima prednosti jer je uop&scaron;tenije, lako za implementaciju i pruža prirodan način navođenja osobina objekta u korisničkom interfejsu, minimizirajući kucanje i sintaksne gre&scaron;ke. SLGeometry je implementirana u jeziku C# .NET Framework-a. Iako su atributi preferiran mehanizam, koji povezuje C# k&ocirc;d sa deklarativnim informacijama, oni imaju određena ograničenja koja limitiraju njihovu primenu za predstavljanje složenih strukturiranih metapodataka. Razvijanjem infrastrukture metapodataka koja je nezavisna od atributa, uspeli smo prevladati ta ograničenja. Na&scaron;e re&scaron;enje, predstavljeno u ovoj disertaciji, pruža pro&scaron;irivost: jednostavnim i složenim vrstama podataka, unarnim i binarnim operacijama, konverzijama tipova, funkcijama i vizuelnim objektima, omogućavajući&nbsp; time programerima da neprimetno dodaju nove osobine u SLGeometry&nbsp; implementirajući ih kao C# klase označene metapodacima.</p>

No description available.