Sia Ka Cheung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 85-91). / Abstracts in English and Chinese. / Abstract --- p.i / Acknowledgement --- p.iv / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Problem Statement --- p.1 / Chapter 1.2 --- Contributions --- p.3 / Chapter 1.3 --- Thesis Organization --- p.4 / Chapter 2 --- Background --- p.5 / Chapter 2.1 --- Content-Based Image Retrieval --- p.5 / Chapter 2.1.1 --- Feature Extraction --- p.6 / Chapter 2.1.2 --- Indexing and Retrieval --- p.7 / Chapter 2.2 --- Relevance Feedback --- p.7 / Chapter 2.2.1 --- Weight Updating --- p.9 / Chapter 2.2.2 --- Bayesian Formulation --- p.11 / Chapter 2.2.3 --- Statistical Approaches --- p.12 / Chapter 2.2.4 --- Inter-query Feedback --- p.12 / Chapter 2.3 --- Peer-to-Peer Information Retrieval --- p.14 / Chapter 2.3.1 --- Distributed Hash Table Techniques --- p.16 / Chapter 2.3.2 --- Routing Indices and Shortcuts --- p.17 / Chapter 2.3.3 --- Content-Based Retrieval in P2P Systems --- p.18 / Chapter 3 --- Parameter Estimation-Based Relevance Feedback --- p.21 / Chapter 3.1 --- Parameter Estimation of Target Distribution --- p.21 / Chapter 3.1.1 --- Motivation --- p.21 / Chapter 3.1.2 --- Model --- p.23 / Chapter 3.1.3 --- Relevance Feedback --- p.24 / Chapter 3.1.4 --- Maximum Entropy Display --- p.26 / Chapter 3.2 --- Self-Organizing Map Based Inter-Query Feedback --- p.27 / Chapter 3.2.1 --- Motivation --- p.27 / Chapter 3.2.2 --- Initialization and Replication of SOM --- p.29 / Chapter 3.2.3 --- SOM Training for Inter-query Feedback --- p.31 / Chapter 3.2.4 --- Target Estimation and Display Set Selection for Intra- query Feedback --- p.33 / Chapter 3.3 --- Experiment --- p.35 / Chapter 3.3.1 --- Study of Parameter Estimation Method Using Synthetic Data --- p.35 / Chapter 3.3.2 --- Performance Study in Intra- and Inter- Query Feedback . --- p.40 / Chapter 3.4 --- Conclusion --- p.42 / Chapter 4 --- Distributed COntent-based Visual Information Retrieval --- p.44 / Chapter 4.1 --- Introduction --- p.44 / Chapter 4.2 --- Peer Clustering --- p.45 / Chapter 4.2.1 --- Basic Version --- p.45 / Chapter 4.2.2 --- Single Cluster Version --- p.47 / Chapter 4.2.3 --- Multiple Clusters Version --- p.51 / Chapter 4.3 --- Firework Query Model --- p.53 / Chapter 4.4 --- Implementation and System Architecture --- p.57 / Chapter 4.4.1 --- Gnutella Message Modification --- p.57 / Chapter 4.4.2 --- Architecture of DISCOVIR --- p.59 / Chapter 4.4.3 --- Flow of Operations --- p.60 / Chapter 4.5 --- Experiments --- p.62 / Chapter 4.5.1 --- Simulation Model of the Peer-to-Peer Network --- p.62 / Chapter 4.5.2 --- Number of Peers --- p.66 / Chapter 4.5.3 --- TTL of Query Message --- p.70 / Chapter 4.5.4 --- Effects of Data Resolution on Query Efficiency --- p.73 / Chapter 4.5.5 --- Discussion --- p.74 / Chapter 4.6 --- Conclusion --- p.77 / Chapter 5 --- Future Works and Conclusion --- p.79 / Chapter A --- Derivation of Update Equation --- p.81 / Chapter B --- An Efficient Discovery of Signatures --- p.82 / Bibliography --- p.85

Yip King-Fung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 84-89). / Abstracts in English and Chinese. / Abstract --- p.i / 論文摘要 --- p.iii / Table of Contents --- p.iv / List of Abbreviations --- p.vi / Acknowledgements --- p.vii / Chapter 1. --- Introduction --- p.1 / Chapter 1.1. --- Background --- p.1 / Chapter 1.2. --- Motivation --- p.3 / Chapter 1.3. --- Thesis Organization --- p.4 / Chapter 2. --- A Survey of Content-based Image Retrieval --- p.5 / Chapter 2.1. --- Text-based Image Retrieval --- p.5 / Chapter 2.2. --- Content-Based Image Retrieval --- p.7 / Chapter 2.2.1. --- Content-Based Image Retrieval Systems --- p.7 / Chapter 2.2.2. --- Query Methods --- p.9 / Chapter 2.2.3. --- Image Features --- p.11 / Chapter 2.2.4. --- Summary --- p.16 / Chapter 3. --- Visual Thesaurus using SOM --- p.17 / Chapter 3.1. --- Algorithm --- p.17 / Chapter 3.1.1. --- Image Representation --- p.17 / Chapter 3.1.2. --- Self-Organizing Map --- p.21 / Chapter 3.2. --- Preliminary Experiment --- p.27 / Chapter 3.2.1. --- Feature differences --- p.27 / Chapter 3.2.2. --- Labeling differences --- p.30 / Chapter 4. --- Experiment --- p.33 / Chapter 4.1. --- Subjects --- p.33 / Chapter 4.2. --- Apparatus --- p.33 / Chapter 4.2.1. --- Systems --- p.33 / Chapter 4.2.2. --- Test Databases --- p.33 / Chapter 4.3. --- Procedure --- p.34 / Chapter 4.3.1. --- Description --- p.35 / Chapter 4.3.2. --- SOM (text) --- p.36 / Chapter 4.3.3. --- SOM (image) --- p.38 / Chapter 4.3.4. --- QBE (text) --- p.40 / Chapter 4.3.5. --- QBE (image) --- p.42 / Chapter 4.3.6. --- Questionnaire --- p.44 / Chapter 4.3.7. --- Experiment Flow --- p.45 / Chapter 4.4. --- Results --- p.46 / Chapter 4.5. --- Discussion --- p.51 / Chapter 5. --- Quantizing Color Histogram --- p.55 / Chapter 5.1. --- Algorithm --- p.56 / Chapter 5.1.1. --- Codebook Generation Phrase --- p.57 / Chapter 5.1.2. --- Histogram Generation Phrase --- p.66 / Chapter 5.2. --- Experiment --- p.67 / Chapter 5.2.1. --- Test Database --- p.67 / Chapter 5.2.2. --- Evaluation Methods --- p.67 / Chapter 5.2.3. --- Results and Discussion --- p.69 / Chapter 5.2.4. --- Summary --- p.74 / Chapter 6. --- Relevance Feedback --- p.75 / Chapter 6.1. --- Relevance Feedback in Text Information Retrieval --- p.75 / Chapter 6.2. --- Relevance Feedback in Multimedia Information Retrieval --- p.76 / Chapter 6.3. --- Relevance Feedback in Visual Thesaurus --- p.76 / Chapter 7. --- Conclusions --- p.80 / Chapter 7.1. --- Applications --- p.81 / Chapter 7.2. --- Future Directions --- p.81 / Chapter 7.2.1. --- SOM Generation --- p.81 / Chapter 7.2.2. --- Hybrid Architecture --- p.82 / References --- p.84

Os arquivos pessoais estão cada vez mais em evidência e na pauta de discussão entre estudiosos e profissionais da área arquivística. Contribuindo para a discussão em crescimento, apresentamos a defesa de um novo método de pesquisa com arquivos pessoais, fundamentado, desenvolvido e demonstrado a partir da criação de um instrumento de pesquisa desenvolvido paralelamente: o Inventário cronológico do arquivo de Epifânio Dória. Filho de proprietários de terras, Epifânio da Fonseca Dória e Menezes nasceu no ano de 1884, em Campos (Sergipe). O titular do arquivo participou da formação de praticamente todos os centros de estudo, arquivos, bibliotecas, revistas e instituições dedicadas às humanidades no Estado de Sergipe. Dedicou-se com afinco à organização de arquivos por seis décadas reunindo documentos, angariando recursos e adquirindo fundos. Figura representativa em Sergipe por sua contribuição à guarda, preservação de documentos históricos e arquivos pessoais de personalidades sergipanas, notabilizou-se também pela incansável pesquisa histórica desenvolvida ao longo de sua vida. Falecido em 1976, Epifânio Dória nos deixou um precioso conjunto documental, que perfaz um período riquíssimo da história do Brasil, marcado por acontecimentos e transições importantes, que apresentam para o pesquisador inúmeras possibilidades de pesquisa em diversas áreas do conhecimento. O arquivo de Epifânio Dória possui 35.193 documentos, estando distribuído, e consequentemente fragmentado, em três importantes instituições sergipanas, a saber: Instituto Histórico e Geográfico de Sergipe (IHGSE), Arquivo Público do Estado de Sergipe (APES) e Biblioteca Pública Estadual Epifânio Dória (BPED). Apesar de fisicamente fragmentado, trata-se de um arquivo íntegro, preservado pela família e, posteriormente, pelas instituições de custódia que o receberam. Entrar em contato, conhecer e trabalhar com a documentação reunida por este importante intelectual, historiador e bibliotecário sergipano foi nossa tarefa. Nesta nova proposta metodológica percorremos: a funcionalidade, o contexto de produção dos documentos e o vínculo documental. Essa tarefa foi potencializada com a criação, o desenvolvimento, a alimentação e o uso de um banco de dados, que contribuiu para a recuperação das informações e para a construção dos verbetes formadores da cronologia elementos de classificação que deram um sentido mais imediato aos documentos. Nesta proposta, a classificação assumiu o patamar mais próximo dos documentos, classificados um a um, sendo priorizada a escala micro e levando em conta as especificidades da trajetória de vida do titular do arquivo. A construção do inventário cronológico permitiu um diálogo exaustivo entre a documentação produzida e acumulada por seu titular e sua trajetória de vida. Entendendo-se diálogo não como uma interpretação histórica, mas como a construção de uma ponte entre o documento e a atividade/evento que lhe deu origem. O arquivo de Epifânio Dória nos impôs problemas práticos e teóricos complexos, mas, em contrapartida, nos ofereceu a chance de discuti-los, buscando soluções e propostas no desenvolvimento da pesquisa. A tese apresentada fornece novas nuances a metodologia arquivística de forma a fundamentar a organização, descrição e contextualização dos documentos pessoais, sem ferir os princípios da área; além de aprofundar, com base na documentação, a própria biografia de Epifânio Dória. / Personal files are increasingly in evidence and on the agenda for discussion between scholars and professionals in the area of archives. Contributing to the discussion on growth, introducing the defense of a search method with personal files, reasoned and demonstrated from research instrument developed in parallel: The Inventory of chronological file of Epifânio Dória. Son of landowners, Epifânio da Fonseca Dória e Menezes was born in the year of 1884, in Campos (Sergipe). The holder of the file participated in the formation of virtually all study centers, archives, libraries, magazines and institutions dedicated to the humanities in the State of Sergipe. He devoted himself diligently to organize files by six decades gathering documents, gaining resources and acquiring funds. Representative Figure in Sergipe by its contribution to guard, preservation of historical documents and personal files of State of Segipe personalities, studious also by tireless historical research developed over the course of his life. Dead in 1976, Epifânio Dória left us a precious records, which makes a very rich period of the Brazil history, marked by events and transitions, which have for the researcher countless possibilities of research in various areas of knowledge. The file of Epifânio Dória has 35,193 documents, being distributed, and consequently fragmented, in three important institutions sergipanas, namely: Historical and Geographic Institute of Sergipe (IHGSE), Public Archives of the State of Sergipe (APES) and Public State Library Epiphanius Doria (BPED). Although physically fragmented, it is a file intact, preserved by the family and, subsequently, by the institutions of custody that the received. Contact, knowing and working with the documentation gathered by an important intellectual, historian and librarian from Sergipe were was our task. We offer with the work presented a new approach to personal files. In this proposal the classification assumes the closest level to the documents, classified one by one, being prioritized the micro scale and taking into account the specificities of the life trajectory of the holder of the file. In this sense, the record sheets created are the elements of classification that give a sense more immediately to documents. This way, we build a chronological inventory, performing, from this survey instrument, a comprehensive dialog between the documentation produced and accumulated by its holder and their life trajectory. Understanding dialog is not as a historical interpretation, but as the construction of a bridge between the document and the activity/event that you gave rise. The file of Epifânio Dória spurred us on practical problems and theoretical complex, but, on the other hand, offered us the chance to discuss them, seeking solutions and proposals in the development of the research. The thesis presented provides new nuances the methodology archives in order to substantiate the organization, description and contextualization of personal documents, without violating the principles of the area, and further, on the basis of the documentation, the own biography of Epifânio Dória.

Este trabalho apresenta um estudo sobre o gargalo no acesso a disco sob arquiteturas com sistemas multiprocessadores e processadores multicore e apresenta uma proposta de solução para o problema e sua implementação. A solução desenvolvida é chamada de FPA. A estratégia desenvolvida no trabalho aproveita os recursos de memória compartilhada da arquitetura e utiliza buffers de dados compartilhados entre as diversas threads das aplicações, bem como tenta otimizar o acesso ao disco rígido. Para que seja diminuída a concorrência no acesso a disco, é permitido que apenas uma thread realize leituras ou gravações no disco por vez, e nas situações de escrita é feita a sobreposição entre o processamento e o envio dos dados ao disco. As operações de escrita são realizadas por uma thread adicional, que é inicializada e gerenciada pela FPA. Foram executados diversos testes com diferentes números de threads, tamanhos de arquivo e quantidade de processamento de cálculos na aplicação. Os resultados apresentaram ganho de desempenho com a FPA em diversas situações, onde um dos fatores mais significativos para o ganho de desempenho é a quantidade de processamento existente na aplicação. De modo geral, as operações de leitura apresentaram ganho de desempenho em relação ao uso de streams nas situações onde existe pouco processamento de cálculos na aplicação, e as operações de escrita mostraram vantagem nas situações onde existe uma quantidade de processamento de cálculos maior na aplicação. Nas operações de escrita é obtido vantagem com a sobreposição entre processamento e escrita de dados. Porém, quando a quantidade de processamento de cálculos é muito alta, o tempo de espera pela gravação em disco torna-se irrisório perante o tempo gasto no processamento dos cálculos, ocasionando perda de desempenho da FPA em relação aos streams. / This work presents a study on disk access bottlenecks for multiprocessor architecture systems and also proposes a specification to solve this problem and its implementation. The developed strategy is called FPA. The developed strategy makes use of shared memory architecture and uses shared data buffers among several application threads and also tries to optimize disk access time. In order to decrease disk concurrency, is allowed to just one application thread to read/write simultaneously and processing thread operations run parallelly to disk operations. Write operations are performed by an internal thread, which is started and managed by FPA. Several tests were performed concerning different amounts of application threads instances, file sizes and computing instructions. Results show performance gain with FPA in several situations. The main factor that affects performance is the amount of computing instructions on each application. In general, read operations showed a better performance compared to use of streams in situations where there is few computing instructions in the application, and write operations showed advantages on situations where there are more computing instructions in the application. Write operations are advantageous using data writing and computing instructions overlap. However, in cases of a large amount of computing instructions compared to disk operations, the time to perform disk operations becomes too few compared to computing time, occurring FPA performance loss compared to streams.

Cette thèse est consacrée à l’étude des fichiers de police et de gendarmerie pour, notamment, mettre en lumière l’idée-force selon laquelle une conception moderne de l’État de droit promeut non seulement leur encadrement mais plus encore leur nécessité. De fait, il existe en France de nombreux fichiers tenus par diverses administrations dont le but est par exemple de recenser des personnes en fonction de leur statut, de comptabiliser les propriétaires de véhicules ou les titulaires de permis de conduire, de dénombrer les personnes condamnées, et par ces biais de prévenir et si possible faciliter la répression des contraventions, délits et crimes. Le droit à la sûreté constitue une liberté fondamentale, et il convient de percevoir que par leur existence même les fichiers de police participent de cet objectif. En pratique, il s’agira de savoir si des abréviations comme FAED, FNAEG, FIJAIS, STIC, JUDEX, FPR, FRG, FVVS, FIT, FNFM, SDRF, SIS-Schengen, N-SIS,FAC, FCA, FPIS, SDRF, AGRIPPA, FDST, FOS, CIBLE, FIP, STUC, FTIVV, SCPPB, TREIMA, RAPACE, FAR, FNPE, FSCP, SALVAC, FNT, FBS, FTPJ, FSPORA ou FNPC désignent des outils véritables et efficients de rapprochements criminels, utilisés par les autorités afin d’élucider les crimes les plus graves. En substance, ces fichiers visent, grâce à une simple requête, à identifier voire à localiser les délinquants et les criminels dans toute la mémoire informatisée des services, qu’ils’agisse des fichiers d’antécédents criminels ou même des simples notes inscrites en procédure. Au demeurant, ces moteurs de recherche peuvent fonctionner pour tous les types de délits ou crimes. / This thesis is dedicated to the understanding of police files and to their compatibility with Human rights. Also, it questions both potential Human rights and individual freedom violations behind such acronyms: FAED, FNAEG, FIJAIS, STIC, JUDEX, FPR, FRG, FVVS, FIT, FNFM, SDRF, SIS-Schengen, N-SIS, FAC, FCA,FPIS, SDRF, AGRIPA FDST, FOS, CIBLE, FIP, STUC, FTIVV, SCPPB, TREIMA, RAPACE, FAR, FNPE, FSCP, SALVAC, FNT, FBS, FTPJ, FS-PORA or FNPC. While leading an investigation, the vigilance shall then be doubled: On one hand, investigators (police and customs) should be provided with relevant and sufficient information so as to lead their inquisition and to collect enough evidence (Loppsi 2). On the other hand, the Human rights of each citizen have to be insured against abuse and misuse of information. In 2009, The CNIL (National Commissionon Informatics and Liberty) revealed that 83 % of the data of the STIC was not accurate.Data related to victims and to their offender is then stored (identity, date and place of birth, nationalities addresses). Some crimes files even reveal information related to the ethnical or racial origins of the parties, information related to their political and religious opinions, and information related to their health or to their sexual life. In case of any information misuse, recourse to justice seems to be very limited. In France, no law supports the opposition of a party to access data related to his/her identity. This is an exception made to the Informatics and Liberty Law (according to the Law 78-17 dated January 6th 1978 modified).

Abstract not available

.

<p>The Company Siemens Industrial Turbo Machinery AB manufactures and launches in operation among other things gas turbines, steam turbines, compressors, turn-key power plants and carries out service for components for heat and power production. Siemens also performs research and development, marketing, sales and installations of turbines and completes power plants, service and refurbish.</p><p>Our thesis for the engineering degree is to develop an automatic status log which will be used as a tool to control how the status of the machine is before and after technical service at gas turbines. Operational disturbances will be registered in a structured way in order to get a good possibility to follow up the reliability of the application.</p><p>An automatic log function has been developed and will be activated at start, stop and shutdown of the turbine system. Log files are created automatically and get a name with the event type, the date and the time. The files contain data as timestamp, name, measured values and units of the signals which are going to be analyzed by the support engineers. They can evaluate the cause of the problem using the log files.</p>

No description available.

Atlikta analizė ir pasiūlyti konvertavimo iš DXF į ABSF ir atgal metodai. Po pirmo konvertavimo į ABSF (Alternatyvus Brėžinių Saugojimo Formatas) formatą, vartotojas gali suprantamai peržiūrėti ar atlikti taisymus faile naudodamasis teksto redaktoriumi. DXF formato failas yra pernelyg sudėtingas, kad išsiaškiti jo struktūra su grupių kodais ir atlikinėti norimas korekcijas. Po atlikto konvertavimo į DXF formatą vartotojas gali dirbti su tokiomis programomis kaip AutoCAD ar 3DsMax. ABSF formato faile, žinant formato struktūros specifikacijas, galima atlikti norimas korekcijas. Naudojami tokie objektai (esybės): LINIJOS, TEKSTAS, APSKRITIMAI, LANKAI, TASKAI ir kt. Į kiekvieną lauką privaloma rašyti tai kas reikalaujama. Svarbu: ABSF formato failą galima sukurti pačiam nenaudojant jokių specialių priemonių. / This is analysis and offered way to convert from DXF format to ABSF, and of course converting in other way. This means that after first converting, user can see everything in one file understandable. Because DXF file is too complexed for view it simple, It‘s not easy to understand all group codes that DXF has. After converting into DXF file you can work with file with such programs as AutoCAD or 3Dstudio. In ABSF format files you can edit, but simple thing you must know, is structure of the file. It has some objects: LINIJOS, TEKSTAS, APSKRITIMAI, LANKAI, TASKAI etc. After this, you must write into each field exactly for that value, that is required. Important: it is possible to create ABSF file from the scratch and convert to DXF.