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The Global ETD Search service is a free service for researchers
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Showing 51 to 60 of 61 (0.019 seconds)Spelling suggestions: "subject:"svag""
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Vizualizace vícerozměrných dat pomocí webových technologií / Visualization of multidimensional data using web technologiesBurian, Vojtěch January 2016 (has links)
Scope of this work is the problematic of data visualization. Data visualization is a useful tool to present and gather new information and thus get to better decisions. In theoretical part, data analysis topics are dealt with. Then specific types of graphs are listed and explained, and in next part problems with graph creation are pinpointed. Basics of graphic and web design are also mentioned. Practical part is focused on visualization of data of processed results of speech analysis, gathered from patients with Parkinson disease. Because majority of people in medical industry do not have, or is not able to work with specialized software (such as Matlab), outputs in HTML table and SVG format were created based on Python programming language. Both these parts are accommodated into webpage, which can be easily opened in web browser installed in most of computers regardless of operation system used.
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SVG Weather: Entwicklung einer SVG Web Mapping Applikation zur Visualisierung von vierdimensionalen Daten am Beispiel von WettervorhersagedatenKunze, Ralf 07 November 2006 (has links)
Thema dieser Arbeit ist die automatisierte grafische Aufarbeitung der Rohdaten einer Wetter- oder Klimaprognose für das Internet, um eine interaktive Anwendung zur Betrachtung der Daten zu erhalten. Im Internet finden sich zwar Wetterdarstellungen, die gute Ansätze aufweisen, allerdings werden interaktive und dynamische Techniken nur wenig genutzt. Daher wurde erstmalig eine Software erstellt, mit der eine komplexe Web Mapping Applikation generiert werden kann, die sowohl für die Darstellung von allgemeinen geographischen Daten, als auch für die Visualisierung von räumlichen Daten mit einem zeitlichen Aspekt geeignet ist. Besonderen Wert wurde auf die Visualisierung von Wetterdaten gelegt, die in der Web Mapping Applikation komfortabel eingebunden werden können. Dadurch ist es möglich, eine interaktive und dynamische Visualisierung einer Wettervorhersage im Internet zu präsentieren. Zusätzlich wurde darauf geachtet, dass die Visualisierung einer Wettervorhersage in Kombination mit der Web Mapping Applikation automatisiert erfolgt und dennoch sehr frei und einfach konfiguriert werden kann. Es ist keinerlei Fremdsoftware erforderlich, um eine solche Web Mapping Anwendung zuerzeugen. Lediglich die zu visualisierenden Daten müssen vorhanden sein. Die in der Web Mapping Applikation vorhandenen Daten sind frei kombinierbar, Ausschnitte können gezielt betrachtet werden, eine Navigation durch die Zeit wird ermöglicht und die Wettervorhersagedaten können mit einer beliebig genauen Geographie versehen werden. Dadurch ist es erstmals gelungen eine komfortable Wettervorhersage für das Internet zu präsentieren, die eine umfangreiche Analyse der kommenden Wetterlage erlaubt. Um die Anwendbarkeit der automatisierten Prozesskette zu demonstrieren, kann eine täglich aktualisierte interaktive Wettervorhersage für Europa unter folgender URL betrachtet werden: http://www.svg-weather.de
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Visualizing Confusion Matrices for Multidimensional Signal Detection Correlational Methods and Semantic Cluster based Visualization in Virtual EnvironmentsZhou, Yue 03 September 2013 (has links)
No description available.
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Detection and Prevention of Malware Smuggling in Scalable Vector Graphics (SVG)Ufnal, Marek, Longuevergne, Thomas January 2024 (has links)
Since 2015, malicious actors have been using SVG files to obfuscate malware from potential defensive mechanisms and carry out attacks undetected through the use of smuggling tech- niques [1]. Throughout this thesis, we use the Design Science Research methodology in order to design and develop an artefact able to detect these attacks within a real network infrastruc- ture, while minimising the impact on the user experience. For the designed artefact to answer these challenges, we conduct two scoping reviews: an analysis of seven of these incidents to determine the technique used to perform the smuggling. This is followed by a map of the dif- ferent security processes available to network administrators and individuals who search for open-source technologies and aim to close the gap left by lack of these solutions. Moreover the paper proposes a SVG parser and a Random Forest classifier to extract valu- able features needed to find the malicious payloads hidden in the graphics. The performance of the artefact is analysed to determine its suitability for real-world usage and if an adequate success rate is reached. The paper finally concludes that the task of obfuscated malware de- tection is a multi-faceted problem and the artefact, while successful, is a suitable blueprint for exploring future improvements in the field.
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Modern Methods for Tree Graph Structures Rendering / Modern Methods for Tree Graph Structures RenderingZajíc, Jiří January 2013 (has links)
Tento projekt se věnuje problematice zobrazení velkých hierarchických struktur, zejména možnostem vizualizace stromových grafů. Cílem je implementace hyperbolického prohlížeče ve webovém prostředí, který využívá potenciálu neeukleidovské geometrie k promítnutí stromu na hyperbolickou rovinu. Velký důraz je kladen na uživatelsky přívětivou manipulaci se zobrazovaným modelem a snadnou orientaci.
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Web-based geotemporal visualization of healthcare dataBloomquist, Samuel W. 09 October 2014 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / Healthcare data visualization presents challenges due to its non-standard organizational structure and disparate record formats. Epidemiologists and clinicians currently lack the tools to discern patterns in large-scale data that would reveal valuable healthcare information at the granular level of individual patients and populations. Integrating geospatial and temporal healthcare data within a common visual context provides a twofold benefit: it allows clinicians to synthesize large-scale healthcare data to provide a context for local patient care decisions, and it better informs epidemiologists in making public health recommendations.
Advanced implementations of the Scalable Vector Graphic (SVG), HyperText Markup Language version 5 (HTML5), and Cascading Style Sheets version 3 (CSS3) specifications in the latest versions of most major Web browsers brought hardware-accelerated graphics to the Web and opened the door for more intricate and interactive visualization techniques than have previously been possible. We developed a series of new geotemporal visualization techniques under a general healthcare data visualization framework in order to provide a real-time dashboard for analysis and exploration of complex healthcare data. This visualization framework, HealthTerrain, is a concept space constructed using text and data mining techniques, extracted concepts, and attributes associated with geographical locations.
HealthTerrain's association graph serves two purposes. First, it is a powerful interactive visualization of the relationships among concept terms, allowing users to explore the concept space, discover correlations, and generate novel hypotheses. Second, it functions as a user interface, allowing selection of concept terms for further visual analysis.
In addition to the association graph, concept terms can be compared across time and location using several new visualization techniques. A spatial-temporal choropleth map projection embeds rich textures to generate an integrated, two-dimensional visualization. Its key feature is a new offset contour method to visualize multidimensional and time-series data associated with different geographical regions. Additionally, a ring graph reveals patterns at the fine granularity of patient occurrences using a new radial coordinate-based time-series visualization technique.
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NPS AUV workbench: collaborative environment for autonomous underwater vehicles (AUV) mission planning and 3D visualizationLee, Chin Siong 03 1900 (has links)
Approved for public release, distribution is unlimited / alities. The extensible Markup Language (XML) is used for data storage and message exchange, Extensible 3D (X3D) Graphics for visualization and XML Schema-based Binary Compression (XSBC) for data compression. The AUV Workbench provides an intuitive cross-platform-capable tool with extensibility to provide for future enhancements such as agent-based control, asynchronous reporting and communication, loss-free message compression and built-in support for mission data archiving. This thesis also investigates the Jabber instant messaging protocol, showing its suitability for text and file messaging in a tactical environment. Exemplars show that the XML backbone of this open-source technology can be leveraged to enable both human and agent messaging with improvements over current systems. Integrated Jabber instant messaging support makes the NPS AUV Workbench the first custom application supporting XML Tactical Chat (XTC). Results demonstrate that the AUV Workbench provides a capable testbed for diverse AUV technologies, assisting in the development of traditional single-vehicle operations and agent-based multiple-vehicle methodologies. The flexible design of the Workbench further encourages integration of new extensions to serve operational needs. Exemplars demonstrate how in-mission and post-mission event monitoring by human operators can be achieved via simple web page, standard clients or custom instant messaging client. Finally, the AUV Workbench's potential as a tool in the development of multiple-AUV tactics and doctrine is discussed. / Civilian, Singapore Defence Science and Technology Agency
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XML在地理資訊系統空間資料表達上的應用 / The Application of XML in the Representation of GIS Spatial Data張家坤 Unknown Date (has links)
隨著網際網路的蓬勃發展，傳統的地理資訊系統也從早期的單機系統朝Web GIS的方向發展，但是關於地理資料的格式卻仍舊莫衷一是，沒有一個為業界所共同遵從的標準，其結果除了人力與財力資源的浪費，也造成不同單位間的地理資料整合上的困難。傳統的電子地圖採用點矩陣的圖形格式，因檔案太大而常造成資料傳輸上的延遲，而且圖形的解析度與品質不佳；此外在建置上十分不便，需要專門的處理軟體才能進行編輯修改。因此傳統GIS的處理方式已經不能滿足網路化的GIS應用系統的資訊需求。
在XML出現之後，W3C與業界也體認到這樣的需求，因此新一代的網路二維圖形標準，可變動向量圖形（Scalable Vector Graphics，SVG）便應運而生，雖然目前SVG仍在候選建議階段，但鑑於它的諸多特點與優越性，目前已獲得業界各大公司的支持。本論文便在此種情況下產生研究動機，我們期望透過SVG這種新興的向量圖形格式，找出解決目前GIS在地理空間資料上所面臨的困境。經過本研究所實作出來的雛形系統顯示，以SVG作為新一代的Web GIS地理空間資料格式不但可行，而且突破許多傳統方式的瓶頸和缺點。 / With the development of Internet, traditional GIS was being changed from single user to Web GIS. But the file formats of geographic spatial data are still various. We don’t have a simple and effective standard. The result are financial and manpower resource wasting. It is inconvenient and difficult to integrate geographic spatial data between different GIS and organizations. Traditional maps are bitmapped format, with lower quality at high resulation. We have to use particular tools when modifying bitmaps. Therefore, traditional way in GIS should be improved.
The Scalable Vector Graphics（SVG） format is a new XML grammer for defining vector-based 2D graphics of the Web and other applications. SVG was created by World Wide Web Consortium（W3C）, the non-profit, industry-wide, open–standards consorium. Over twenty organizations, including Sun Microsystems, Adobe, Apple, IBM, and Kodak, have been involved in defining SVG. SVG is a subset of XML, which is rapidly becoming the foundation for all modern Web applications. SVG gave us a motive to do the investigation. We hope to use the SVG format to solve the problems in GIS. In the result of the prototype system in our thesis, we find out that SVG should be the better, effective spatial data format of Web GIS.
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Architecture de Négociation et d'Adaptation de Services Multimédia dans des Environnements HétérogènesLEMLOUMA, Tayeb 09 June 2004 (has links) (PDF)
Les progrès technologiques récents ont permis l'apparition d'une grande variété de nouveaux moyens pour accéder et utiliser l'information multimédia du Web en tout lieu et à tout moment. L'hétérogénéité des appareils d'accès s'est accompagné une évolution importante de l'information disponible sur le réseau. Aujourd'hui, on trouve une multitude de formats complexes avec de nouvelles fonctionnalités, telles que la vidéo interactive, les animations 3D et le dessin vectoriel. Ces formats s'appuient sur de nouveaux modèles de documents qui intègrent une structure logique, spatiale, temporelle et une dimension hypermédia.<br /><br />Face à cette évolution, il est nécessaire de concevoir des systèmes qui permettent l'accès et l'utilisation de l'information sous une forme qui corresponde aux contraintes imposées par l'environnement. Cette thèse a pour objectif de contribuer à l'adaptation et à la négociation des contenus en considérant les limitations des utilisateurs et les contraintes de leur environnement. Nous présentons une architecture flexible appelée NAC qui permet de définir les composants qui interviennent dans la négociation et l'adaptation de contenu, et qui décrit comment ces composants sont organisés.<br /><br />NAC permet plusieurs types d'adaptation : une adaptation structurelle, une adaptation sémantique et une adaptation des ressources médias. Ces types d'adaptation sont basés sur les différents contextes des clients (caractéristiques des terminaux, préférences des utilisateurs, etc.). Nous proposons également un modèle de description de contextes UPS (schémas universels pour la description des profils), un protocole de négociation et un ensemble de techniques d'adaptation. Les concepts de l'architecture NAC ont contribué aux travaux de standardisation du consortium W3C, en particulier au cadre de travail CC/PP et aux travaux sur l'indépendance des terminaux. Cette étude est complétée par une évaluation de performances qui démontre que le système proposé est exploitable dans la pratique.
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Semi-Automatic Mapping of Structured Data to Visual Variables / Halbautomatische Abbildung von strukturierten Daten auf Visuelle VariablenPolowinski, Jan 09 April 2013 (has links) (PDF)
While semantic web data is machine-understandable and well suited for advanced filtering, in its raw representation it is not conveniently understandable to humans. Therefore, visualization is needed. A core challenge when visualizing the structured but heterogeneous data turned out to be a flexible mapping to Visual Variables. This work deals with a highly flexible, semi-automatic solution with a maximum support of the visualization process, reducing the mapping possibilities to a useful subset. The basis for this is knowledge, concerning metrics and structure of the data on the one hand and available visualization structures, platforms and common graphical facts on the other hand — provided by a novel basic visualization ontology. A declarative, platform-independent mapping vocabulary and a framework was developed, utilizing current standards from the semantic web and the Model-Driven Architecture (MDA). / Während Semantic-Web-Daten maschinenverstehbar und hervorragend filterbar sind, sind sie — in ihrer Rohform — nicht leicht von Menschen verstehbar. Eine Visualisierung der Daten ist deshalb notwendig. Die Kernherausforderung dabei ist eine flexible Abbildung der strukturierten aber heterogenen Daten auf Visuelle Variablen. Diese Arbeit beschreibt eine hochflexible halbautomatische Lösung bei maximaler Unterstützung des Visualisierungsprozesses, welcher die Abbildungsmöglichkeiten, aus denen der Nutzer zu wählen hat, auf eine sinnvolle Teilmenge reduziert. Die Grundlage dafür sind einerseits Metriken und das Wissen über die Struktur der Daten und andererseits das Wissen über verfügbare Visualisierungsstrukturen, -plattformen und bekannte grafische Fakten, welche durch eine neuentwickelte Visualisierungsontologie bereitgestellt werden. Basierend auf Standards des Semantic Webs und der Model-getriebenen Architektur, wurde desweiteren ein deklaratives, plattformunabhängiges Visualisierungsvokabular und -framework entwickelt.
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