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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Visualization of complex events in multithreading systems

Iakovenko, Volodymyr January 2013 (has links)
Today more and more applications become multithreaded, because parallel processing of multiple threads improves program performance on computer systems that have multiple CPUs. With growing of amount of multithreaded applications also amount of problems increases, which can occur during program execution. There are many tools, which help with multithreading debugging. They all differ from each other and they are all good in solving specific kinds of problems that they aim to solve, but still there is much work has to be done in multithreading debugging area. The aim of this project is to create a solution, with use of each users can define events, which are executed in their single- or multithreaded applications and should be visualized for future debugging. This will help user to see how the application works on a logical level.
12

Visualizing Process-Based Model Evaluation for Numerical Weather Prediction Models

Tjernström, Johanna January 2022 (has links)
The ability to predict the weather carries great societal benefit. To ascertain reliable predictions the numerical weather prediction models used need evaluation with particular attention paid to their representations of atmospheric processes. This type of process-based model evaluation is performed through comparison of large datasets of observational data and  model results. The Year Of Polar Prediction Project site Model Intercomparison Project (YOPPsiteMIP) works to further process-based model evaluation in polar regions and has, to this end, created extensive datasets for these types of analysis. However, the lack of standardized tools to visualize the analyses carries with it significant limitations for both the usability of the data as well as the standardization of the visualizations created from it. To amend this, a set of visualization tools have been created. They were evaluated in the context of visualization quality and source code maintainability. They were found satisfactory in all cases except for the runtime. These tools further the ability to perform process-based analysis with the YOPPsiteMIP datasets in standardized formats. They are limited to the project specific MDF file type. However, with the continued spread of the MDF file type the tools become increasingly useful in furthering model evaluation on larger scales than YOPPsiteMIP.
13

Natural language understanding in controlled virtual environments

Ye, Patrick January 2009 (has links)
Generating computer animation from natural language instructions is a complex task that encompasses several key aspects of artificial intelligence including natural language understanding, computer graphics and knowledge representation. Traditionally, this task has been approached using rule based systems which were highly successful on their respective domains, but were difficult to generalise to other domains. In this thesis, I describe the key theories and principles behind a domain-independent machine learning framework for constructing natural language based animation systems, and show how this framework can be more flexible and more powerful than the prevalent rule based approach. / I begin this thesis with a thorough introduction to the goals of the research. I then review the most relevant literature to put this research into perspective. After the literature review, I provide brief descriptions to the most relevant technologies in both natural language processing and computer graphics. I then report original research in semantic role labelling and verb sense disambiguation, followed by a detailed description and analysis of the machine learning framework for natural language based animation generation. / The key contributions of this thesis are: a novel method for performing semantic role labelling of prepositional phrases, a novel method for performing verb sense disambiguation, and a novel machine learning framework for grounding linguistic information in virtual worlds and converting verb-semantic information to computer graphics commands to create computer animation.
14

Assessing SeeIT 3D, A Software Visualization Tool

Gadapa, Shalini 12 July 2012 (has links)
No description available.
15

Visualization of Dynamic Memory in C++ Applications / Visualisering av Dynamiskt Minne i C++ Applikationer

Salén, Filip January 2019 (has links)
Optimized memory management is important for a demanding application to achieve high-performance results. But un-optimized or unwanted memory behaviors can usually be difficult to detect without an overview of how memory is structured during run-time. This thesis explores real-time visualization of dynamic memory allocation for applications using the memory pool allocation technique. In the thesis, technical and graphical challenges are described together with their solutions and the design choices that were made. The final result is a program that can visualize dynamic memory management in real time, with the focus on displaying a detailed and comprehensive memory overview that preserves the level of detail over time. / Optimerad minneshantering är viktig för att uppnå hög prestanda i en krävande applikation. Men att upptäcka icke optimerade eller oönskade minnesbeteenden kan vara svårt utan en visuell översikt över hur minnet är strukturerat under programmets exekvering. Denna avhandling undersöker hur dynamisk minnesallokering kan visualiseras i realtid för applikationer som använder allokeringstekniken minnes\-pool. I avhandlingen beskrivs tekniska och grafiska utmaningar tillsammans med deras lösningar och de designval som gjordes. Slutresultatet är ett program som kan visualisera dynamisk minneshantering i realtid och som fokuserar på att visa en detaljerad och omfattande minnesöversikt som bevarar detaljeringsgraden över tiden.
16

[en] REPRESENTATIONS FOR COMPUTATIONAL MODEL FOR NET STRUCTURED DISCUSSION: A CASE STUDY USING THE FORUM TOOL OF AULANET ENVIRONMENT / [pt] REPRESENTAÇÕES PARA MODELAGEM COMPUTACIONAL DA DISCUSSÃO ESTRUTURADA EM REDE: UM ESTUDO DE CASO COM A FERRAMENTA DE FÓRUM DO AMBIENTE AULANET

FILIPE ANCELMO SARAMAGO 07 December 2007 (has links)
[pt] Esta pesquisa investiga o suporte computacional para discussão estruturada em rede realizada em fórum de discussão. As ferramentas de fórum geralmente estruturam a discussão em árvore através de uma hierarquia de mensagens encadeadas. A utilização de uma estrutura mais complexa do que a árvore implica em dificuldades de participação. A leitura torna-se mais difícil, pela ausência da linearidade; a escrita torna-se mais difícil dado a maior flexibilidade de associação. Esta dificuldade com o uso de ferramentas com discurso estruturado em rede já foi relatada na literatura. A hipótese aqui investigada é que, dado um suporte computacional, os participantes do fórum conseguem participar adequadamente da discussão estruturada em rede. Entende-se que ocorre participação adequada quando o participante consegue entender as associações entre as mensagens (processo de leitura) e postar uma nova mensagem associada à discussão (processo de escrita). A solução proposta foi o uso do mecanismo de referências múltiplas e a ferramenta gráfica para visualização e construção da rede de mensagens, sendo implementados no serviço Conferência no ambiente AulaNet. Para avaliar a solução proposta, foram realizadas algumas sessões de fóruns com alunos de graduação e pósgraduação em Informática. Nestas sessões, variou-se a estruturação, a visualização e a forma de construção do discurso com o objetivo de analisar a influência na participação. Do estudo de caso realizado, concluiu-se que, apesar das dificuldades identificadas, os participantes conseguiram acompanhar a discussão e encadear as mensagens, o que indica a viabilidade do uso da estruturação em rede. Também se concluiu que o treinamento em ferramentas gráficas para a geração do discurso possibilita superar as dificuldades decorrentes da maior complexidade estrutural do discurso. / [en] This works presents an investigation regarding the computational support for net structured forum discussions. In forums, the discussion is usually structured on a tree format through hierarchically connected messages. The use of a more complex structure than a tree indicates some difficulties for the participants. It is more difficult to read, due to the lack of a linear structure, and to write, due to the possibility of more flexible associations among messages. The hypothesis being investigated is that, given a specific computational support, the participants of a forum will have an adequate participation in the net structured discussion; an adequate participation happens when a participant can understand the associations among messages (reading process) or when a new message is posted with associations in the discussion (writing process). The proposed solution was the usage of a multiple reference mechanism and the visualization and the way to build the forum net structure; these tools were implemented on the Conference Service of AulaNet environment. To investigate the proposed solution some forum sessions with Computer Science graduate and pos-graduate students were conducted. In these sessions, the forum discussion structure, its visualization and the way the discussion was built were varied with the aim at analyzing the influence of the student participation. From the case study conducted it was concluded that, despite the identified difficulties, the participants managed to follow the discussion and posted messages with associations, which indicates the viability of net structured foruns. Other conclusion was that the training with graphical tools to generate the net structured discussion is useful to eliminate some of the difficulties that is present on the more complex structured discussion.
17

Visualização de informações em cidades participativas e suas interações

Schünke, Luana Carine 26 August 2013 (has links)
Submitted by Maicon Juliano Schmidt (maicons) on 2015-07-06T16:35:49Z No. of bitstreams: 1 Luana Carine Schünke.pdf: 7508388 bytes, checksum: a12396bedf39ca3d110912e0a25ef468 (MD5) / Made available in DSpace on 2015-07-06T16:35:49Z (GMT). No. of bitstreams: 1 Luana Carine Schünke.pdf: 7508388 bytes, checksum: a12396bedf39ca3d110912e0a25ef468 (MD5) Previous issue date: 2013-01-31 / Nenhuma / Cidades participativas são aquelas em que os seus cidadãos participam na construção e melhora do cotidiano da sua cidade. Neste sentido, a ideia é de que através de uma página virtual as pessoas possam registrar eventos relacionados a sua cidade. Exemplos de eventos são crimes, acidentes, manutenções, entre outros. Através da mesma página virtual, os cidadãos também podem visualizar informações sobre a sua cidade, essas visualizações são resultantes da integralização dos dados registrados pelos próprios cidadãos. O objetivo deste trabalho é gerar a visualização e a interação de diferentes classes de ocorrências em cidades participativas. Para isso, são estudados vários conceitos como: visualização de informações, diagramas de Voronoi, árvore quaternária, envoltória convexa e API do Google Maps. A partir desses estudos, é criado um modelo de visualização de ocorrências. As visualizações resultantes geram regiões de acordo com a densidade das ocorrências. A interação entre duas classes de ocorrências acontece com base nas densidades das ocorrências e também de acordo com uma distribuição de contexto. As classes de ocorrências escolhidas para as interações são ocorrências criminais e ocorrências policiais. A distribuição de contexto riqueza é aplicada com o intuito de ser um atrativo para as ocorrências criminais. O comportamento do sistema oriundo das interações é analisado e representado graficamente. / Participatory cities are those that citizens participate in the construction and improvement of their common daily life. In this direction, the idea of this work is that through a website people can record issues/occurrences related to their city. Examples of occurrences are crimes, accidents, maintenance issues, among others. Through the same site, citizens can get global information about the city, resulted from the integration of the supplied data by the use of a visualization scheme. The goal of this work is to create views and interactions about the occurrences registered in a participatory city. For this, many concepts are studied like: data visualizing, Voronoi diagrams, quaternary tree, convex hull and Google Maps API. Starting from this studies, there is created a model visualization of occurrences. The resulting visualizations generate regions according occurrences densities. Based on occurrences densities and also in agreement with a context distribution the interaction between two classes of events befall. Criminal occurrences and police occurrences are the classes of events selected to interact. The wealth context distribution is apllied with the aim to be attractive for the criminal occurrences. The system behavior arising from interactions is analyzed and graphically represented.
18

Analytics for Management : En modell som beskriver framtagandet av ett beslutsunderlag där rätt mätetal visualiseras på rätt sätt utifrån en formulerad strategi / Analytics for Management : A model that describes the development of decision making tools that visualize the right KPIs based on corporate strategy

Sandén, Louise, Chowdhury, Tanima January 2015 (has links)
Hur strategiarbete och processmätning bör gå till behandlas i befintliga teorier var för sig även om vikten av att sammankoppla dessa också beskrivs. Dock anses det saknas en enhetlig modell som förenar strategiarbete och processmätningar fullt ut och beskriver hur genomförandet praktiskt ska gå till. Med bakgrund i detta syftar examensarbetet Analytics for Management (AFM) till att utveckla en modell som beskriver hur mätetal (Key Performance Indicators, KPI:er) tas fram utifrån ett företags strategi och visualiseras på rätt sätt för att kunna beskriva enskilda processers kapacitet och förmåga. Detta resulterar i ett beslutsunderlag på ledningsnivå där strategiarbete och processmätning kopplas samman. Framtagandet av AFM-modellen inleddes med teoretiska studier inom ämnet vilket resulterade i en konceptuell modell. Därefter testades den konceptuella modellen genom fallstudier på tre företag med olika struktur och storlek. Genom att kombinera den konceptuella modellen med resultaten från fallstudierna färdigställdes sedan den slutgiltiga AFM-modellen. AFM-modellen består av tre faser där den första fasen involverar strategikonkretisering och målnedbrytning. Fasen innefattar att strategin bryts ner till strategiska mål och en strategikarta, formulering av kritiska framgångsfaktorer (KFF:er) och slutligen framtagning av taktiska mål. I den andra fasen sker KPI-framtagning genom att först generera preliminära KPI:er utifrån de taktiska målen och sedan kartlägga dem för att identifiera två typer av KPI:er. Dessa är utfallsmått (Key Performance Outcomes, KPO:er), som beskriver processprestandan och påverkansmått (Key Performance Drivers, KPD:er), som påverkar utfallen som KPO:er illustrerar. Genom att KPD:erna förbättras kan även KPO:erna förbättras och därför är det viktigt att styrning sker med hjälp av KPD:erna. Efter att KPI:er har kartlagts väljs vilka KPI:er som ska användas för mätning. I den sista fasen sker mätningsförberedelser genom att göra en datainsamlingsplan. Därefter sker mätningar och slutligen sammanställs mätdata för att visualisera KPI:erna på ett bra sätt. Hur KPI:er ska visualiseras beror på KPI-typ eftersom KPO:er och KPD:er ska användas för olika syften. KPO:erna ska visualiseras med enkla diagram i ett resultatkort som ledningen ska använda sig utav i ett första steg för att följa upp verksamheten. För att sedan finna orsaken till KPO:erna och kunna förbättra dem, ska ett styrkort användas. I styrkortet sammanställs KPD:erna med hjälp av styrdiagram, vilka visar variation över tid i processerna, för att tidigt upptäcka förändringar och därmed styra processer. AFM-modellen resulterar med hjälp av resultatkortet och styrkortet i ett beslutsunderlag där rätt KPI:er visualiseras på rätt sätt. Resultaten från fallstudieföretagen har visat att AFM-modellen har hög generaliserbarhet. Vidare kan AFM-modellen användas av olika typer av organisationer då strategiarbete och processmätning är aktuellt och viktigt för det dagliga arbetet oavsett bransch. Modellen ska genom beslutsunderlaget underlätta för organisationer att agera handlingskraftigt och arbeta mer proaktivt med hjälp av beslut baserat på data framtaget utifrån företagets strategi. AFM-modellen möjliggör därmed en enhetlig användning av mätetal i organisationen, där uppföljningsarbetet i hela verksamheten genomsyras av strategin. / In existing theory, strategic management and process measurements are commonly treated separately even though the importance of connecting them is also mentioned. However, a comprehensive model or theory that combines strategic management and process measurement fully and describes how the implementation should be done in practice has not been found in literature. Thereby, the aim of the thesis Analytics for Management (AFM) is to develop a model that describes how to develop the right Key Performance Indicators (KPIs) based on corporate strategy and visualize them correctly in order to describe process performance. This results in a decision-making tool that combines strategic management and process measurement to be used by management. The model was initially developed through theoretical studies that resulted in a conceptual model. Thereafter, the conceptual model was tested through case studies at three companies with different organizational structure and size. By combining the theories and the results from the field studies the AFM model was finalized. The AFM model consists of three phases, where the first phase involves strategy decomposition and goal formulation. This is done by a stepwise decomposition of the strategy through strategic objectives and a strategy map, formulation of critical success factors finally resulting in tactical objectives. In the second phase, KPIs are developed by generating preliminary KPIs based on the tactical goals and then mapping them. KPI mapping is used to distinguish between different types of KPIs resulting in identification of Key Performance Outcomes (KPO) that describe the process performance and Key Performance Drivers (KPD) affecting the outcome that the KPOs represent. The KPDs drive the results of the organization, and should therefore be used for monitoring and controlling the business. When the KPI mapping has been completed the KPIs that will be used for measurement are chosen. In the final phase, measurement preparations are done through a data collection plan. Thereafter measurements are performed and compiled in order to visualize KPIs correctly. As the KPOs and KPDs should be used for different purposes they should also be visualized differently. KPOs should be visualized through simple charts in a scorecard that the management should use as a first step for monitoring. Then, in order to find the cause of the KPOs and be able to improve them, a controlcard should be used. The KPDs are compiled in the controlcard through control charts, which show variation in processes, and enables early detection of changes and process control. The AFM model thereby, through the use of a scorecard and a controlcard, results in a decision-making tool where the right KPIs are visualized correctly. The results from the field studies and the different characteristics of the companies have proven a high level of generalizability of the model. Furthermore, the AFM model addresses highly important and pressing issues involving strategic management and process measurement, which all types of companies need to consider in daily operations. The AFM model aims to make it easier for organizations to act energetically and proactive through the decision-making tool. In conclusion, the AFM model enables a uniform use of metrics aligned with the strategy, in order to monitor and control process performance.
19

Visual narrative : a theory and model for image-driven digital historiography based on a case study of China's Boxer Uprising (c.1900)

Sebring, Ellen Irene January 2016 (has links)
Digitization that has enabled instant access to vast numbers of archival, historical images, demands a new paradigm for the use of visual imagery in historical research. This thesis proposes a new form of historiography in the digital medium, an image-based narrative mode for authoring and reading history. I propose a digital model for conveying history through the visual record, as an alternative to the printed book. Unlike the quantitative “big data” approach to digital humanities, this research explores visuality itself. In a practice-led approach, the research addresses both aspects of historiography: (1) a method of historical representation; and (2) original historical work on a selected topic. The testbed for historiographic and narrative experiments which led to the model was my case study on the Boxer Uprising in China, c. 1900. While many written histories of the Boxer Uprising exist, I collected a large portion of its extensive visual record for the first time. Sources from around the world, in a variety of media, were assembled into a digital data set that reveals previously unexplored historical themes. A series of visual narratives built in the case study culminated in a proposed “Visual Narrative Field” model. In this model, meaning emerges in the patterns observed between images within a complex visual field. The model vertically integrates three narrative approaches in order to support alternating cognitive modes used to read texts and perceive images. Linear concentration is blended with the non-linear exploration of interactive forms. The model provides historians with a much-needed tool for authoring narrative through relationships between images in a scalable approach. Due to digitization, visual databases are easily assembled, and images are as easily reproduced as written text. The Visual Narrative Field model takes advantage of the characteristics of the newly-digitized visual record, providing a means of authoring visual narrative that can be comprehended without the use of extensive written text. The model thus creates an unprecedented image-based method for performing and presenting historical research.
20

Se och synas : En studie om att synliggöra förbättringsarbeten

Fjaestad, Anna January 2016 (has links)
Se och synas är ett examensarbete i informationsdesign med inriktning mot textdesign. Syftet med detta arbete är att synliggöra förbättringsarbeten på företag med lean-produktion. Examensarbetet ingår i ett större forskningsprojekt, Integrering av innovationsorienterat arbete i lean-produktionssystem, ett samarbete mellan forskare på Mälardalens högskola och olika fallföretag där Eskilstuna ElektronikPartner AB är en av dessa företag. Arbetet strävar efter att ta fram ett designförslag som ska få målgruppen att tänka på förbättringar genom att synliggöra förbättringsarbeten. Målet är att få målgruppen att se och synas, det vill säga se förbättringar och visa upp förbättringsarbeten genom att synas. Under inhämtningen av empirin från observationer, intervjuer och fokusgrupp visade det sig att målgruppen genomför många förbättringar som inte synliggörs och att de önskade mer företagsinformation. Inläsningen av teorier och litteratur kring kognitiv psykologi, stilmarkörer i text, riktlinjer för lättläst text och principer för layout och grafisk form gav mig kunskap om hur information kan utformas på digitala storbildsskärmar. Text och grafik måste vara tydligt utformade. Genom stilmarkörer i språket, lättskrivna texter och hierarkier i grafisk form görs informationen läslig och lätt att förstå. Utifrån empiri och teori har ett gestaltningsförslag tagits fram som synliggör förbättringsarbeten på företag med lean-produktion. Gestaltningen utgår från målgruppens åsikter och består av ett handlingsmönster där förbättringsarbetet synliggörs både muntligt och skriftligt. Gestaltningen består också av en fysisk artefakt där information kring förbättringsarbeten visas på digitala storbildsskärmar. / To see and be seen is a thesis in information design with emphasis on text design. The aim of this thesis is to visualiz improvement in companies with lean production. This thesis is a part of a reseach about embedding innovation-oriented work within lean-production systems. This reseach i based on cooperations between reseachers at Mälardalens högskola and different business cases. On of these business cases is Eskilstuna ElektronikPartner AB. This theses aims to develop a designproposal that will get the target group to consider improvements by visualizing improvements. The goal is to get the target group to see and be seen , that is to see improvement and demonstrate improvement by appearing. From the result of empirical data gathered from observations, interviews and focusgroups has shown that the target group implements many improvements that are not made ​​visible and that they wanted more company information. The conclusion of theories about cognitive psychology, style markers in text, guidelines for readable text and principles of layout and graphic design, gave me knowledge of how information can be designed in digital large screens. Text and graphic design must be clear. Through style markers in text, easily written texts and hierarchies in graphical form, information can be made legible and easy to understand. Based on the empirical work and the theories a design proposal has been developed that visualiz improvements in companies with lean production. The design is based on the opinions of the target group and consists of a pattern of behavior where improvement efforts are made visible both orally and in writing. The design also consists of a physical artifact, where information about the improvement is shown on digital large screens. / Integrering av innovationsorienterat arbete i lean-produktionssystem

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