Most real systems can be represented as a graph of multi-typed components with a large number of interactions. Heterogeneous Information Networks (HIN) are interconnected structures with data of multiple types which support the rich semantic meaning of structural types of nodes and edges. In HIN, different information can be presented using different types and forms of data, but may have the same or complementary information. So there is knowledge to be discovered. Terminology Knowledge Structures (TKS) como terminology products can be sources of linguistic representations and knowledge to be used for enrich the HIN and create a measure of similarity to extract the documents similar to each other, even if these documents are of different types (for example, finding medical articles that are in some way related to medical records). In this sense, this work presents the creation of a Heterogeneous Information Network using classical similarity measures, terminology products and the attributes of documents by an algorithm called NetworkCreator. As a contribution, an algorithm called NetworkCreator was created that from medical records and scientific articles builds an HIN with related documents, was also created. The algorithm HeteSimTKSQuery to calculate similarity measures between documents of different types which are in HIN. Terminology products with meta-paths were also explored. The results were efficient, reaching on average 89\\% accuracy in some cases. However, it is important to note that all HIN presented in the researched literature were constructed only by one type of data coming from a single source. The results show that the algorithms are feasible to solve the problems of HIN construction and search for similarity. But it still needs improvement. In the future one can work on detection in the detection of node granularity of these networks and try to reduce the network construction runtime / A maioria dos sistemas reais pode ser representada como um grafo de componentes multi-tipados com um grande número de interações. Redes de Informação Heterogênea (HIN) são estruturas interconectadas com dados de múltiplos tipos que suportam o rico significado semântico de tipos estruturais de nós e arestas. Nas HIN, diferentes informações podem ser apresentadas usando diferentes tipos e formas de dados, mas podem ter informações iguais ou complementares. Então, há conhecimento a ser descoberto. Estruturas de Conhecimento Terminológicos (TKS) como produtos terminológicos podem ser fontes de representações linguísticas e de conhecimento a ser usado para enriquecer a HIN e criar uma medida de similaridade para extrair os documentos similares entre si, mesmo que esses documentos sejam de tipos diferentes (por exemplo, encontrar os artigos médicos que de alguma forma estão relacionados com registros médicos). Nesse sentido, este trabalho apresenta o algoritmo NetworkCreator que cria uma Rede de Informações Heterogêneas utilizando medidas de similaridade clássicas, produtos de terminológicos e os atributos dos documentos. Nos experimentos, foram utilizados prontuários médicos e artigos científicos para construir a HIN e relacionar seus conteúdos. O algoritmo HeteSimTKSQuery também foi criado para calcular medidas de similaridade entre os documentos de diferentes tipos que se encontram na HIN. Produtos terminológicos com meta-caminhos também foram explorados. Os resultados se mostraram eficientes, alcançando em média 89\\% de acurácia, em alguns casos. No entanto, é importante notar que todas as HIN apresentadas na literatura pesquisada foram construídas apenas por um tipo de dados proveniente de uma única fonte. Os resultados mostram que os algoritmos são viáveis para resolver os problemas de construção de HIN e busca de similaridade. Porém, eles ainda precisam de aperfeiçoamentos. Futuramente, pode-se trabalhar na detecção da granularidade dos nós destas redes e tentar reduzir o tempo de construção da rede

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Made available in DSpace on 2015-10-19T11:50:07Z (GMT). No. of bitstreams: 1 santos2013.pdf: 1484505 bytes, checksum: ff202e9e0de85b713b1c6d68341d96a9 (MD5) Previous issue date: 2013-03-04 / This dissertation addresses the dynamics of information flows in a network of responsible consumption. With a broad perspective that the ecological question emerges showing the unsustainability of the system of capitalist production and consumption compared to the depletion of natural resources. The topic of research approaches aspects associated with consumption as an important operator that capitalist growth model, raising the debate of the formation of movements opposed to consumerism and mobilized for transformation through a social practice that goes against the logic of the capitalist market. In this sense, this work aimed to raise some groups that operate in Brazil, motivations and identify their causes and to propose different categories of groups, that have in common the opposition to consumerism and support environmental causes. Thenceforth, the dissertation selected for the preparation of a case study of a group of activists who organized a movement called Rede Ecológica. This case study sought to identify, through a mapping of internal and external flows of information in dynamic communication network. To perform this research we used the Social Network Analysis which was based on data obtained through interviews and surveys in loco. Without claiming to represent the set of social movements in Brazil, which in many ways act against consumerism, the case study describes one of the final links in a debate that begins with the ecological crisis. In this sense, a contribution of this dissertation may be to mark with one of the possible directions and necessary to face the ecological crisis, in addition to public policy, where the spontaneous and autonomous organization of people gathered around common causes, acts as incubators new projects of society / A presente dissertação aborda a dinâmica dos fluxos de informação de uma rede organizada em torno do consumo responsável. Parte de uma perspectiva ampla onde a questão ecológica emerge evidenciando a insustentabilidade do sistema de produção e consumo ante o esgotamento de recursos naturais. A partir daí, o tema da pesquisa aproxima-se de aspectos associados ao consumismo enquanto importante operador desse modelo de crescimento capitalista, trazendo para o debate a constituição de movimentos que se opõem ao consumismo e buscam uma transformação por meio de uma práxis social que contraria a lógica de mercado dominante. Nesse contexto, buscou-se nesse trabalho levantar alguns grupos que atuam no Brasil, identificar suas motivações e causas e assim propor categorias diferenciadas de grupos que, em comum, tem o fato combaterem o consumismo e apoiarem causas ecológicas. A partir daí, a dissertação selecionou para a elaboração de um estudo de caso um grupo de ativistas que se organizam num movimento denominado Rede Ecológica. Nesse estudo de caso buscou-se identificar, por meio de um mapeamento dos fluxos internos e externos de informações a dinâmica comunicacional da rede. Para realização desta investigação foi empregada a Análise de Redes Sociais que se baseou em elementos obtidos por meio de entrevistas e levantamentos in loco. Sem a pretensão de representar o conjunto de movimentos sociais no Brasil, que por meios diversos atuam contra o consumismo, o estudo de caso apresentado, descreve um dos elos finais de um debate que começa com a crise ecológica. Nesse sentido, uma contribuição da presente dissertação pode ser a de demarcar com uma das direções possíveis e necessárias para enfrentamento da crise ecológica, para além das políticas públicas, onde a organização espontânea e autônoma de pessoas reunidas em torno de causas comuns, atua como incubadores de novos projetos de sociedade

The radiotherapy clinics in Sweden have been without a functioning national platform consisting of dose data from patients undergoing radiotherapy. A national collaboration between clinics will improve the quality of radiotherapy since clinics will be able to compare dose data from treatment plans between clinics. It will also help and improve future researches in radiotherapy. A new national quality registry for radiotherapy in Sweden is under development and is located on the INCA platform. The aim of this study is to do a quality assurance of the INCA registry. The data stored in the registry are calculated from the treatment plans stored locally at the clinics. The quality assurance of the registry is done by creating a program run by Python code and by using Streamlit as the graphical user interface. The program takes dose and volume data from the dose volume histograms located in treatment plans from the INCA database and compares it with the dose and volume data from the local clinics' treatment planning system. The different treatment planning systems considered in the program are Oncentra(Elekta, Sweden), Eclipse(Varian, U.S.), RayStation(RaySearch Laboratories, Sweden) and Monaco(Electa, Sweden). The compared absorbed doses are the dose to 99% of the structure volume(D99%), D98%, D50%, D2% and D1%. The program generates how much the INCA data differs from the TPS data in percent and is named QARS(Quality Assurance of the Radiotherapy Database in Sweden). A verification of the created program and a preliminary evaluation is done on a limited dataset containing three patient groups(prostate patients, lung patients and head and neck patients) with five patients in each group. The dataset is run through the program with patient data from both Oncentra and Eclipse. The result indicates that all the near-maximum doses, D2% and D1% in INCA are very close to their corresponding TPS dose. There is a more noticeable difference in the near-minimum doses, D99% and D98% but also for some D50% where the difference seems to increase in larger structure volumes with very low doses and in very small structure volumes, smaller than 0.01 cm3. It is compared how well INCA agrees with Oncentra and Eclipse respectively and it is clear that Eclipse has a smaller difference to INCA than Oncentra for structures with very small volumes and larger structures with low doses. To summarise the study, it generates a program for quality assurance of the national quality registry for radiotherapy in Sweden which hopefully can help improve the quality of radiotherapy and help future researches in the field.

No description available.

Effective Health Systems make service provision easy for health workers, especially if they have access to the latest guidelines in a dynamic profession where new technologies are ever emerging. However, available data indicates that the health system in Uganda is constrained and still using old technologies despite the availability of newer technologies. As a result, this study sought to investigate the adoptability, cost effectiveness, and sustainability with regard to Personal Digital Assistants. The study, which was cross sectional in nature, was carried out in Mbale District in Eastern Uganda between 2008 and 2010. In depth interviews were conducted with health workers and key informants. Also, published and unpublished literature about theUganda Health Information Network was reviewed.The findings revealed that the use of Personal Digital Assistants also known as handheld computers can go a long way towards improving healthcare delivery in countryside health facilities. To health workers in remote places, the PDAs are a source of the latest clinical care guidelines for several diseases including HIV and AIDS as well as malaria. Health information systems have been improved and data collection and reporting have been eased by this technology. However, while evidence of viability of this technology exists, it still has challenges like power and delays in software updates among others.

The aim of the research was to investigate the current state of scientific and technological (S&T) information service provision in Thailand with a focus on its role of supporting research and development. The ultimate goal of the research was to develop a service model(s) which could aid the modernisation of the S&T information service. The information policies and strategic management at national and institutional levels were examined together with present and future roles in service provision and barriers to S&T information development. The research framework was constructed on the basis of theoretical models of the provision and management of effective information services. The institutions which participated in this research included 46 academic and special libraries in Thailand, hereafter called S&T information centres, and two funding agencies. The data were collected using a variety of research tools, employing both quantitative and qualitative methods, namely, questionnaires, semi-structured interviews, and focus groups. The questionnaires were distributed to five groups of respondents: executives, managers, librarians or staff, end-users, and executives or policy-makers of funding agencies. Two hundred and eighty-nine questionnaires were sent by post to 45 S&T information centres and two funding agencies whilst 703 questionnaires were also distributed to end-users. Interviews were performed with 55 executives and library managers. Three focus groups were organised on different topics, with a total of 36 participants. The major findings showed that national information policy in relation to S&T information was still relatively ineffective with roles and responsibilities of stakeholders not explicitly identified. In general, the results showed that institutional information policies exist but weak communication between executives, managers, and staff caused problems with implementation and interpretation. Most S&T centres were found to have strategic plans. The focus of these were on issues of integrated ICT infrastructure, acquisition of electronic resources, service improvement, communication with users and feedback, user education, cost effective use of resources, E-library transition and knowledge sharing. The development of resource sharing via computerised networks was considered to be paramount; progress to date was thought to be slow due to a lack of policies at national and institutional levels. Users' information literacy was still found to be an issue, particularly in respect of making effective use of electronic resources. The thesis provided recommendations for a national network for S&T information provision to be designed and managed by a hosting provider.

Alors que les réseaux sociaux s'attachent à représenter des entités et les relations existant entre elles, les réseaux d'information intègrent également des attributs décrivant ces entités ; ce qui conduit à revisiter les méthodes d'analyse et de fouille de ces réseaux. Dans ces travaux, nous proposons des méthodes de classification des entités du réseau d'information qui exploitent d'une part les relations entre celles-ci et d'autre part les attributs les caractérisant. Nous nous penchons sur le cas des réseaux à vecteurs d'attributs, où les entités du réseau sont décrites par des vecteurs numériques. Ainsi nous proposons des approches basées sur des techniques reconnues pour chaque type d'information, faisant appel notamment à l'inertie pour la classification automatique et à la modularité de Newman et Girvan pour la détection de communautés. Nous évaluons nos propositions sur des réseaux issus de données bibliographiques, faisant usage en particulier d'information textuelle. Nous évaluons également nos approches face à diverses évolutions du réseau, notamment au regard d'une détérioration des informations des liens et des attributs, et nous caractérisons la robustesse de nos méthodes à celle-ci / While social networks use to represent entities and relationships between them, information networks also include attributes describing these entities, leading to review the analysis and mining methods for these networks. In this work, we discuss classification of the entities in an information network. Classification operate simultaneously on the relationships and on the attributes characterizing the entities. We look at the case of attributed graphs where entities are described by numerical feature vectors. We propose approaches based on proven classification techniques for each type of information, including the inertia for machine learning and Newman and Girvan's modularity for community detection. We evaluate our proposals on networks from bibliographic data, using textual information. We also evaluate our methods against various changes in the network, such as a deterioration of the relational or vector data, mesuring the robustness of our methods to them

A organização social em que estamos inseridos é denominada por Castells (1999) como Sociedade em Rede que é caracterizada por um processo de miniaturização das tecnologias e equipada pela internet sem fio. Esses dois fatores se articulam continuamente, ocasionando o que vemos hoje nas cidades, nômades tecnológicos - usuários das tecnologias móveis que produzem, consomem e compartilham informação sem sair do fluxo vertiginoso da cidade. Dentro dessa realidade, esta pesquisa tem como objetivo central o estudo da relação entre a produção imagética e a espacialidade. Com base nisso, realiza-se uma análise sobre a produção de vídeos gerados na cidade de Fortaleza-CE e compartilhados no site YouTube® junto a uma metodologia criada a partir pelo filme de Dziga Vertov - Um Homem com uma câmera (Rússia, 1929) - para um leitura urbana, discutindo as práticas desse usuários sob a ótica da arquitetura e urbanismo. / The social organization in which we are inserted is called Castells (1999) as Network Society which is characterized by a process of miniaturization of the Technologies and equipped with wireless internet. These two factors Continuously, causing what we see today in the cities, technological nomads - Users of mobile technologies that produce, consume and share information Without leaving the dizzying stream of the city. Within this reality, this research has as Central objective is the study of the relation between imagery and spatiality. With Based on this, an analysis is made on the production of videos generated in the city of Fortaleza-CE and shared on the YouTube® site together with a methodology created Dziga Vertov - A Man with a Camera (Russia, 1929) - for one Urban discourse, discussing the practices of these users from the perspective of architecture and urbanism.

<p>Social movements have long been valuable components of the struggle for a world with true justice. Along with the changing and modernization of society these movements also change, both in their actions as well as in the goals they want to accomplish. Technology is taking a greater part in many aspects of social life, creating new dimensions but also new social divides. This thesis examines how new social movements make themselves visible and affect the world around them through different kinds of networks. For the purpose of this study, we have chosen to study two social movements; the Zapatistas in Mexico, who have become known worldwide for carrying out the first informational revolution, and MoveOn.org, an American grassroots organization that struggles for increased democracy in the US. This thesis describes an empirical analysis of these two social movements, which are studied against a backdrop of the information age and globalisation. The study aims to highlight the effect these movements’ use of network technology has on their ability to reach their goals as well as how technology can be used to further democracy and justice in a global world.</p> / <p>Sociala rörelser har länge varit betydelsefulla komponenter i kampen för en rättvisare värld. I takt med att samhället förändras och moderniseras förändras också dessa rörelser, både i sina sätt att agera och i de syften de vill uppnå. Tekniken tar en allt större plats i många sociala aspekter och skapar nya sociala dimensioner men även nya sociala klyftor. De nya sociala rörelserna arbetar för ett erkännande av sina identiteter och kulturer. Denna uppsats undersöker hur nya sociala rörelser gör sig synliga och påverkar sin omvärld genom olika former av nätverk. För studiens syfte har vi valt att studera två sociala rörelser; zapatisterna i Mexico, som har gjort sig kända över världen för den första informationsrevolutionen, och MoveOn.org, en amerikansk gräsrotsrörelse som kämpar för ett mer demokratiskt USA. I uppsatsen redovisas en empirisk undersökning av dessa två sociala rörelser; vilka studeras mot bakgrund av informationsåldern och globaliseringen. Uppsatsen vill visa på vad dessa rörelsers användning av nätverksteknik har för betydelse för deras möjligheter att nå sina mål och hur teknik kan användas för att främja demokrati och rättvisa i en global värld. </p>