Дисертації з теми "VIDEO COMPONENT"
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Ljungström, Carl. "Design and Implementation of an Analog Video Signal Quality Measuring Software for Component Video." Thesis, Linköpings universitet, Bildkodning, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-54371.
Повний текст джерелаSteshenko, D., and Д. Стешенко. "Marketing component of video projects on the YouTube platform." Thesis, National aviation university, 2021. https://er.nau.edu.ua/handle/NAU/50083.
Повний текст джерелаToday, humanity has a unique opportunity to have instant access to a large amount of information from around the world. It is difficult to imagine the life of modern society without computer technology and the Internet. The advantage of the Internet is that it provides users with ample opportunities for self-realization. Everyone has the opportunity to start an author’s blog, in which he will be free to spread his own thoughts on a topic of interest to him.
Сьогодні людство має унікальну можливість отримати миттєвий доступ до великої кількості інформації з усього світу. Важко уявити життя сучасного суспільства без комп’ютерних технологій та Інтернету. Перевага Інтернету полягає в тому, що він надає користувачам широкі можливості для самореалізації. Кожен має можливість створити авторський блог, в якому він зможе вільно поширювати власні думки на цікаву для нього тему.
Söderström, Ulrik. "Very low bitrate video communication : a principal component analysis approach /." Umeå : Department of Applied Physics and Electronics, Umeå University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1808.
Повний текст джерелаSöderström, Ulrik. "Very Low Bitrate Video Communication : A Principal Component Analysis Approach." Doctoral thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1808.
Повний текст джерелаSöderström, Ulrik. "Very low bitrate facial video coding : based on principal component analysis /." Umeå : Department of Applied Physics and Electronics, Umeå University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-895.
Повний текст джерелаSöderström, Ulrik. "Very low bitrate facial video coding : based on principal component analysis." Licentiate thesis, Umeå University, Applied Physics and Electronics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-895.
Повний текст джерелаThis thesis introduces a coding scheme for very low bitrate video coding through the aid of principal component analysis. Principal information of the facial mimic for a person can be extracted and stored in an Eigenspace. Entire video frames of this persons face can then be compressed with the Eigenspace to only a few projection coefficients. Principal component video coding encodes entire frames at once and increased frame size does not increase the necessary bitrate for encoding, as standard coding schemes do. This enables video communication with high frame rate, spatial resolution and visual quality at very low bitrates. No standard video coding technique provides these four features at the same time.
Theoretical bounds for using principal components to encode facial video sequences are presented. Two different theoretical bounds are derived. One that describes the minimal distortion when a certain number of Eigenimages are used and one that describes the minimum distortion when a minimum number of bits are used.
We investigate how the reconstruction quality for the coding scheme is affected when the Eigenspace, mean image and coefficients are compressed to enable efficient transmission. The Eigenspace and mean image are compressed through JPEG-compression while the while the coefficients are quantized. We show that high compression ratios can be used almost without any decrease in reconstruction quality for the coding scheme.
Different ways of re-using the Eigenspace for a person extracted from one video sequence to encode other video sequences are examined. The most important factor is the positioning of the facial features in the video frames.
Through a user test we find that it is extremely important to consider secondary workloads and how users make use of video when experimental setups are designed.
Lewis, Joshua. "A COMMON COMPONENT-BASED SOFTWARE ARCHITECTURE FOR MILITARY AND COMMERCIAL PC-BASED VIRTUAL SIMULATION." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2301.
Повний текст джерелаPh.D.
Other
Engineering and Computer Science
Modeling and Simulation
Kaufman, Jason R. "Digital video watermarking using singular value decomposition and two-dimensional principal component analysis." Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1141855950.
Повний текст джерелаAzarmehr, Ramin. "Real-time Embedded Age and Gender Classification in Unconstrained Video." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32463.
Повний текст джерелаRadjabi, Ryan F. "WILDFIRE DETECTION SYSTEM BASED ON PRINCIPAL COMPONENT ANALYSIS AND IMAGE PROCESSING OF REMOTE-SENSED VIDEO." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1621.
Повний текст джерелаAlghoul, Karim. "Heart Rate Variability Extraction from Video Signals." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33003.
Повний текст джерелаLI, Songyu. "A New Hands-free Face to Face Video Communication Method : Profile based frontal face video reconstruction." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-152457.
Повний текст джерелаGarges, David Casimir. "Early Forest Fire Detection via Principal Component Analysis of Spectral and Temporal Smoke Signature." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1456.
Повний текст джерелаMoore, Lorna. "In[bodying] the other : performing the digital other as a component of self through real-time video performance." Thesis, University of Wolverhampton, 2014. http://hdl.handle.net/2436/319914.
Повний текст джерелаLee, Jia-Ling. "THE EFFECT OF COGNITIVE STYLES UPON THE COMPLETION OF A VISUALLY-ORIENTED COMPONENT OF ONLINE INSTRUCTION." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3652.
Повний текст джерелаPh.D.
Department of Educational Research, Technology and Leadership
Education
Education: Ph.D.
Pranke, Nico. "Skalierbares und flexibles Live-Video Streaming mit der Media Internet Streaming Toolbox." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2010. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-26652.
Повний текст джерелаPranke, Nico. "Skalierbares und flexibles Live-Video Streaming mit der Media Internet Streaming Toolbox." Doctoral thesis, TU Bergakademie Freiberg, 2009. https://tubaf.qucosa.de/id/qucosa%3A22696.
Повний текст джерелаWedekind, Daniel, Alexander Trumpp, Frederik Gaetjen, Stefan Rasche, Klaus Matschke, Hagen Malberg, and Sebastian Zaunseder. "Assessment of blind source separation techniques for video-based cardiac pulse extraction." SPIE, 2017. https://tud.qucosa.de/id/qucosa%3A35267.
Повний текст джерелаSavas, Zafer. "Real-time Detection And Tracking Of Human Eyes In Video Sequences." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606459/index.pdf.
Повний текст джерелаOur aim is to design a real-time, robust, scale-invariant eye tracker system with human eye movement indication property using the movements of eye pupil. Our eye tracker algorithm is implemented using the Continuously Adaptive Mean Shift (CAMSHIFT) algorithm proposed by Bradski and the EigenFace method proposed by Turk &
Pentland. Previous works for scale invariant object detection using Eigenface method are mostly dependent on limited number of user predefined scales which causes speed problems
so in order to avoid this problem an adaptive eigenface method using the information extracted from CAMSHIFT algorithm is implemented to have a fast and scale invariant eye tracking. First of all
human face in the input image captured by the camera is detected using the CAMSHIFT algorithm which tracks the outline of an irregular shaped object that may change size and shape during the tracking process based on the color of the object. Face area is passed through a number of preprocessing steps such as color space conversion and thresholding to obtain better results during the eye search process. After these preprocessing steps, search areas for left and right eyes are determined using the geometrical properties of the human face and in order to locate each eye indivually the training images are resized by the width information supplied by the CAMSHIFT algortihm. Search regions for left and right eyes are individually passed to the eye detection algortihm to determine the exact locations of each eye. After the detection of eyes, eye areas are individually passed to the pupil detection and eye area detection algorithms which are based on the Active Contours method to indicate the pupil and eye area. Finally, by comparing the geometrical locations of pupil with the eye area, human gaze information is extracted. As a result of this thesis a software named &ldquo
TrackEye&rdquo
with an user interface having indicators for the location of eye areas and pupils, various output screens for human computer interaction and controls for allowing to test the effects of color space conversions and thresholding types during object tracking has been built.
Vadapalli, Hima Bindu. "Recognition of facial action units from video streams with recurrent neural networks : a new paradigm for facial expression recognition." University of the Western Cape, 2011. http://hdl.handle.net/11394/5415.
Повний текст джерелаThis research investigated the application of recurrent neural networks (RNNs) for recognition of facial expressions based on facial action coding system (FACS). Support vector machines (SVMs) were used to validate the results obtained by RNNs. In this approach, instead of recognizing whole facial expressions, the focus was on the recognition of action units (AUs) that are defined in FACS. Recurrent neural networks are capable of gaining knowledge from temporal data while SVMs, which are time invariant, are known to be very good classifiers. Thus, the research consists of four important components: comparison of the use of image sequences against single static images, benchmarking feature selection and network optimization approaches, study of inter-AU correlations by implementing multiple output RNNs, and study of difference images as an approach for performance improvement. In the comparative studies, image sequences were classified using a combination of Gabor filters and RNNs, while single static images were classified using Gabor filters and SVMs. Sets of 11 FACS AUs were classified by both approaches, where a single RNN/SVM classifier was used for classifying each AU. Results indicated that classifying FACS AUs using image sequences yielded better results than using static images. The average recognition rate (RR) and false alarm rate (FAR) using image sequences was 82.75% and 7.61%, respectively, while the classification using single static images yielded a RR and FAR of 79.47% and 9.22%, respectively. The better performance by the use of image sequences can be at- tributed to RNNs ability, as stated above, to extract knowledge from time-series data. Subsequent research then investigated benchmarking dimensionality reduction, feature selection and network optimization techniques, in order to improve the performance provided by the use of image sequences. Results showed that an optimized network, using weight decay, gave best RR and FAR of 85.38% and 6.24%, respectively. The next study was of the inter-AU correlations existing in the Cohn-Kanade database and their effect on classification models. To accomplish this, a model was developed for the classification of a set of AUs by a single multiple output RNN. Results indicated that high inter-AU correlations do in fact aid classification models to gain more knowledge and, thus, perform better. However, this was limited to AUs that start and reach apex at almost the same time. This suggests the need for availability of a larger database of AUs, which could provide both individual and AU combinations for further investigation. The final part of this research investigated use of difference images to track the motion of image pixels. Difference images provide both noise and feature reduction, an aspect that was studied. Results showed that the use of difference image sequences provided the best results, with RR and FAR of 87.95% and 3.45%, respectively, which is shown to be significant when compared to use of normal image sequences classified using RNNs. In conclusion, the research demonstrates that use of RNNs for classification of image sequences is a new and improved paradigm for facial expression recognition.
Behúň, Kamil. "Příznaky z videa pro klasifikaci." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236367.
Повний текст джерелаHesley, Christina Challed. "TARGETING FOOD SELECTIVITY IN YOUNG CHILDREN IN A PRESCHOOL CLASSROOM USING A MULTI-COMPONENT TREATMENT PACKAGE." UKnowledge, 2019. https://uknowledge.uky.edu/edsrc_etds/77.
Повний текст джерелаPeša, Jan. "Prednasky.com - Systém jako modul." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236459.
Повний текст джерелаMarlow, Gregory. "Week 02, Video 01: Components." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/digital-animation-videos-oer/14.
Повний текст джерелаDubois, Sloven. "Décompositions spatio-temporelles pour l'étude des textures dynamiques : contribution à l'indexation vidéo." Phd thesis, Université de La Rochelle, 2010. http://tel.archives-ouvertes.fr/tel-00605667.
Повний текст джерелаChallapalli, Sailabala 1980. "Modeling the temporal components of video structure." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86653.
Повний текст джерелаIncludes bibliographical references (leaf 62).
by Sailabala Challapalli.
M.Eng.and S.B.
Martincová, Lucia. "Odlišení pozadí a pohybujících se objektů ve videosekvenci." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319269.
Повний текст джерелаKomůrková, Lucia. "Odlišení pozadí a pohybujících se objektů ve videosekvenci." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-254387.
Повний текст джерелаRegmi, Hem Kanta. "A Real-Time Computational Decision Support System for Compounded Sterile Preparations using Image Processing and Artificial Neural Networks." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1469113622.
Повний текст джерелаMassaro, James. "A PCA based method for image and video pose sequencing /." Online version of thesis, 2010. http://hdl.handle.net/1850/11991.
Повний текст джерелаPires, David da Silva. "Rastreamento de componentes conexas em vídeo 3D para obtenção de estruturas tridimensionais." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-06072009-173738/.
Повний текст джерелаThis document presents a MSc thesis focused on the development of a data integration system to generate tridimensional structures from 3D video. The work involves the extension of a recently proposed real time 3D video system. This system, composed by a video camera and a projector, obtains range images of recorded objects using slide projection of a coloured stripe pattern. This procedure allows capturing, in real time, objects´ texture and 2,5 D model, at the same time, by a technique called structured light. The data are acquired at 30 frames per second, being of high quality: the resolutions are 640 x 480 pixels and 90 x 240 points (in average), respectively. The extension that this thesis proposes aims at obtaining the tridimensional model of the objects present in a scene through data matching (texture and geometry) of various sampled frames. Thus, the current work is an intermediary step of a larger project with the intent of achieving a complete reconstruction from only a few images obtained from different viewpoints. Such reconstruction will reduce the incidence of occlusion points (very common on the original results) such that it should be possible to adapt the whole system to moving and deformable objects (In the current state, the system is robust only to static and rigid objects.). To the best of our knowledge, there is no method that has fully solved this problem. This text describes the developed work, which consists of a method to perform detection, tracking and spatial matching of connected components present in a 3D video. The video image information (texture) is combined with tridimensional sites (geometry) in order to align surface portions seen on subsequent frames. This is a key step in the 3D video that may be explored in several applications such as compression, geometric integration and scene reconstruction, to name but a few. Our approach consists of detecting salient features in both image and world spaces, for further alignment of texture and geometry. The matching process is accomplished by the application of the ICP---Iterative Closest Point---algorithm, introduced by Besl and McKay in 1992. Succesful experimental results corroborating our method are shown.
Watson, Anna Olivia. "Assessing the quality of audio and video components in desktop multimedia conferencing." Thesis, University College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395040.
Повний текст джерелаWhaley-Carr, Anna Marie. "Is video modeling enough to teach parent-child interactions? Toward a systematic evaluation of the key components of video modeling." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc6040/.
Повний текст джерелаWhaley-Carr, Anna Marie Ala'i-Rosales Shahla S. "Is video modeling enough to teach parent-child interactions? Toward a systematic evaluation of the key components of video modeling /." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-6040.
Повний текст джерелаArachchige, Somi Ruwan Budhagoda. "Face recognition in low resolution video sequences using super resolution /." Online version of thesis, 2008. http://hdl.handle.net/1850/7770.
Повний текст джерелаJäger, Fabian [Verfasser]. "Segment-wise Coding of Texture and Depth Components in 3D Video / Fabian Jäger." Aachen : Shaker, 2016. http://d-nb.info/1094396753/34.
Повний текст джерелаDavenport, Timothy M. "Early Forest Fire Detection using Texture Analysis of Principal Components from Multispectral Video." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/795.
Повний текст джерелаTejada, Gamero Enrique David. "Object detection in videos using principal component pursuit and convolutional neural networks." Master's thesis, Pontificia Universidad Católica del Perú, 2018. http://tesis.pucp.edu.pe/repositorio/handle/123456789/11982.
Повний текст джерелаTesis
Kollnitz, Gunnar. "Implementation of Network Components for Game Projects." Thesis, Luleå tekniska universitet, Datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70167.
Повний текст джерелаI majoriteten av datorspel som släpps nuförtiden, är flerspelar gameplay ett av de största fokusen, och i kärnan av den funktionen finns nätverkskoden. Detta betyder att dålig nätverkskod kan förstöra upplevelsen helt och hållet. A Sweet Studio är en mindre spelstudio som både gör konsultarbete inom industrin, och utvecklar sina egna spel. Men med begränsad tid och begränsade pengar att spendera på sina egna projekt, kan det bli tufft att skapa nya spel. Mening med den här rapporten är att gå över hur en flerspelarbas kan utvecklas i Unity, itereras över och hur den bäst byggs för återanvändning, så att det lätt går att implementeras i nya projekt. Slutresultatet är ett bibliotek med bred funktionalitet och en simpel layout.
Silva, Maria de FÃtima Gomes da. "Attributes of quality of pumpkin(Cucurbita moschata cv. Milk) obtained by different cooking methods." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8043.
Повний текст джерелаA abÃbora à um legume que apresenta uma notÃvel importÃncia nutricional, destacando-se pelo fato de ser uma rica fonte de carotenÃides, compostos imprescindÃveis na nutriÃÃo humana. Todavia, os mÃtodos de cocÃÃo podem influenciar a retenÃÃo de nutrientes e fitoquÃmicos em alimentos, havendo a necessidade de se conhecer a melhor forma de promover a cocÃÃo em abÃbora, minimizando as significativas perdas nutricionais e sensoriais. Este trabalho objetivou determinar e comparar os atributos de qualidade de abÃbora in natura e obtida por diferentes mÃtodos de cocÃÃo: ebuliÃÃo, vapor, vÃcuo (sous-vide) e micro-ondas. Foram realizadas determinaÃÃes quÃmicas e fÃsico-quÃmicas, coloraÃÃo, constituintes funcionais e anÃlises microbiolÃgicas e sensoriais dos produtos. Ao final do estudo, constatou-se que os parÃmetros de sÃlidos solÃveis, aÃÃcares nÃo redutores, aÃÃcares totais, pigmentos escuros solÃveis, Ãngulo hue, antocianinas totais, flavonÃides amarelos, carotenÃides totais e polifenÃis totais, e os atributos sensoriais de sabor, textura, impressÃo global e intenÃÃo de compra apresentaram variaÃÃes significativas pelo efeito dos mÃtodos de cocÃÃo realizados. A cor das amostras cozidas foi menos brilhante (L*), vermelho (a*) e amarelo (b*) do que a cor da amostra in natura. A perda de cores vivas (diminuiÃÃo de croma) em relaÃÃo à abÃbora in natura foi observada para todas as amostras cozidas. Todos os mÃtodos de cocÃÃo reduziram os conteÃdos de Ãcido ascÃrbico, antocianinas totais e polifenÃis totais. Os carotenÃides totais variaram de 8.933,92 a 24.772,72 Âg 100 g-1 de amostra fresca, sendo elevados em 24,58% na cocÃÃo em micro-ondas e em 2,26% na cocÃÃo em ebuliÃÃo, enquando as cocÃÃes no vapor e no vÃcuo (sous-vide) provocaram reduÃÃo. Os flavonÃides amarelos foram mais preservados na cocÃÃo em micro-ondas e variaram de 9,31 a 13,73 mg 100 g-1 entre as cocÃÃes realizadas. A cocÃÃo sous-vide ocasionou as maiores perdas de componentes funcionais, sendo atribuÃdas ao maior tempo de cocÃÃo e a degradaÃÃo pela luz. Os produtos nÃo apresentaram contaminaÃÃes microbiolÃgicas. A cocÃÃo em micro-ondas foi a que apresentou maiores mÃdias para os atributos sensoriais avaliados. As outras trÃs cocÃÃes tambÃm foram bem aceitas pelos provadores, representando nichos diferenciados de mercado. A abÃbora possui muitos atributos de qualidade, apresentando elevados nÃveis de componentes funcionais, sendo a cocÃÃo em micro-ondas o mÃtodo preferido para promover a sua cocÃÃo.
Eastwood, Clare. "Unpacking the black box of voice therapy: Exploration of motor learning and gestural components used in the treatment of muscle tension voice disorder." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/25759.
Повний текст джерелаChiniquy, Michael. "Lyckade spelkomponenter : Vad ligger bakom World of Warcrafts popularitet?" Thesis, Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-18526.
Повний текст джерелаIn this paper, I intend to analyze the MMORPG game World of Warcraft by conducting a formal analysis as a way to isolate game mechanics and elements that could be viewed as well-functioning and well-designed. I will also be breaking down the core components of World of Warcraft using the Interaction Centric Framework to complement the study. The results show that World of Warcraft employs a number of features and design choices that differentiates itself from other games, such as stripping the game of story elements and distilling the gameplay to a basic “carrot on a stick” formula, also leaving the player completely uninterrupted and undeterred during gameplay.
Capdevila, Ibañez Bruno. "Serious game architecture and design : modular component-based data-driven entity system framework to support systemic modeling and design in agile serious game developments." Paris 6, 2013. http://www.theses.fr/2013PA066727.
Повний текст джерелаFor the last ten years, we witness how the inherent learning properties of videogames entice several creators into exploring their potential as a medium of expression for diverse and innovative (serious) purposes. Learning is at the core of the play experience, but it usually takes place at the affective and psychomotor domains. When the learning targets the serious content, cognitive/instructional designers must ensure its effectiveness at the cognitive domain. In such eminently multidisciplinary teams (game, technology, cognition, art), understanding and communication are essential for an effective collaboration from the early stage of inception. In a software engineering approach, we focus on the (multidisciplinary) activities of the development process rather than the disciplines themselves, with the intent to uniform and clarify the field. Then, we propose a software foundation that reinforces this multidisciplinary model thanks to an underdesign approach that favors the creation of collaborative design workspaces. Thereby, Genome Engine can be considered as a data-driven sociotechnical infrastructure that provides non-programmer developers, such as game designers and eventually cognitive designers, with a means to actively participate in the construction of the product design, rather than evaluating it once in usage time. Its architecture is based on a component-based application framework with an entity system of systems runtime object model, which contributes to modularity, reuse and adaptability, as well as to provide familiar abstractions that ease communication. Our approach has been extensively evaluated with the development of several serious game projects
Pereira, Lénia Patrícia Brites. "Componentes poliméricos de alto desempenho para a indústria automóvel." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/15679.
Повний текст джерелаAtualmente, a utilização e as diversas aplicações de materiais poliméricos seguem tendências crescentes, pelo que se torna necessário aprofundar a compreensão do seu comportamento e funcionalidades. Neste contexto, na presente dissertação analisa-se a fabricação e características de rolamentos poliméricos para a suspensão automóvel. Estes rolamentos visam a substituição dos clássicos rolamentos metálicos. Esta substituição tem por objetivos garantir a melhoria do funcionamento dos rolamentos, bem como o seu usufruto, contribuindo para um maior conforto e segurança dos passageiros e para uma redução do peso do veículo, com consequente diminuição do consumo do combustível e melhoria da eficiência. Sendo o poliacetal (POM) e a poliamida (PA) considerados polímeros de alto desempenho, estes polímeros reúnem boas características para aplicação na fabricação de dispositivos com funcionalidades exigentes como é o caso dos rolamentos. O presente trabalho aborda o estudo de algumas das suas propriedades, de modo a obter informações relevantes quanto à respetiva aplicação em rolamentos de suspensão, tendo como foco principal a análise da matéria-prima utilizada. Deste modo, alteraram-se as formulações variando-se os teores de material virgem e reciclado, estudou-se o ser comportamento mecânico, reológico e térmico: fizeram-se análises reológicas através do estudo do MFI a fim de se obterem informações complementares ao estudo mecânico, realizaram-se análises térmicas para avaliar a possibilidade de degradação térmica do material e, no caso da PA66-30GF, recorreu-se à microscopia eletrónica de varrimento para se estudar os aspetos microestruturais deste compósito reforçado com fibra de vidro. Adicionalmente, procedeu-se à análise da rugosidade superficial dos componentes dos rolamentos e quantificou-se o torque dos mesmos. A partir dos estudos anteriores, foi possível concluir que o POM apresenta um comportamento mecânico estável mesmo utilizando uma formulação com 100% de material reciclado. Este comportamento não se verificou na PA6630GF, dado que as suas propriedades mecânicas são afetadas de forma significativa pelo teor de reciclado na formulação. Com o estudo do torque determinou-se o valor limite do momento de torsão do rolamento que garante o seu bom funcionamento e eficácia.
Currently, the use and the diverse applications of polymeric materials are showing growing trends, and so it is necessary to look more closely to their behavior and functionalities. In this context, in this thesis we analyze the manufacture and characteristics of polymeric bearings for the automobile suspension, aiming to replace the traditional metal bearings. This replacement will ensure the improved functioning of bearings as well as their use, concurring to greater comfort and safety of passengers while reducing the vehicle weight, thus decreasing fuel consumption and improving efficiency. As the polyacetal (POM) and the polyamide (PA) are considered high performance polymers, they aggregate good characteristics for use in the production of devices with demanding features such as bearings. This study addresses some of its properties, in order to obtain relevant information about the application of the referred polymers in suspension bearings, focusing mainly on the analysis of the used raw material. Thus, different polymer formulations with various ratios of virgin and recycled polymers were characterized in terms of mechanical, reological and thermal behavior: mechanical behavior was studied changing the formulations of virgin and recycled materials; rheological analyzes were made through the MFI studies in order to obtain complimentary information to the mechanical study, thermal analysis were conducted to evaluate the possibility of thermal degradation of the material and, in the case of PA66-30GF, scanning electronic microscopy was used to access the microstructure of the composite reinforced with glass fiber. In addition, the surface roughness of the bearing components was analysed and torque was quantified. The obtained results allowed to conclude that POM presents a stable mechanical behavior regardless the percentage of recycled material in the composition. Regarding PA66-30GF, this composite showed a different behavior as its mechanical properties are clearly affected by the amount of recycled material used in the composition. The study of the moment of torsion allowed to determine the limit value that ensures a proper functioning and efficiency of the bearing.
Wilander, Hjalmar. "Player experience from 3D game components : A theoretical and empirical look at computer graphics in practice." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-160094.
Повний текст джерелаČerný, Petr. "Vyhledávání ve videu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236590.
Повний текст джерелаMarechal, Nicolas. "Génération de contenu graphique." Phd thesis, Université Claude Bernard - Lyon I, 2010. http://tel.archives-ouvertes.fr/tel-00843000.
Повний текст джерелаChukwu, Leonard O., and Yazhini Ramaswamy. "Differentiating Video Game Addiction from Other High-Level Engagements Among Adult Players." Thesis, Högskolan Dalarna, Institutionen för information och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:du-37742.
Повний текст джерелаHsu, Alexandra (Alexandra E. ). "Creating and editing "Digital Blackboard" videos using Pentimento : with a focus on syncing audio and visual components." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100602.
Повний текст джерелаThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis. Page 85 blank.
Includes bibliographical references (page 84).
Online education is a rapidly growing field and with the desire to create more online educational content comes the necessity to be able to easily generate and maintain that content. This project aims to allow for recording, editing, and maintaining "digital blackboard" style lectures, in which a handwritten lecture with voiceover narration is created. Current recording software requires that a lecture audio and visuals be recorded correctly in one take or they must be re-recorded. By utilizing vector graphics, a separation of audio and visual components, and a way for the user to be in control of the synchronization of audio and visuals, Pentimento is a unique piece of software that is specifically designed to record and edit online handwritten lectures.
by Alexandra Hsu.
M. Eng.
SILVA, Maria de Fátima Gomes da. "Atributos de qualidade de abóbora (Cucurbita moschata cv. Leite) obtida por diferentes métodos de cocção." reponame:Repositório Institucional da UFC, 2012. http://www.repositorio.ufc.br/handle/riufc/17787.
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A abóbora é um legume que apresenta uma notável importância nutricional, destacando-se pelo fato de ser uma rica fonte de carotenóides, compostos imprescindíveis na nutrição humana. Todavia, os métodos de cocção podem influenciar a retenção de nutrientes e fitoquímicos em alimentos, havendo a necessidade de se conhecer a melhor forma de promover a cocção em abóbora, minimizando as significativas perdas nutricionais e sensoriais. Este trabalho objetivou determinar e comparar os atributos de qualidade de abóbora in natura e obtida por diferentes métodos de cocção: ebulição, vapor, vácuo (sous-vide) e micro-ondas. Foram realizadas determinações químicas e físico-químicas, coloração, constituintes funcionais e análises microbiológicas e sensoriais dos produtos. Ao final do estudo, constatou-se que os parâmetros de sólidos solúveis, açúcares não redutores, açúcares totais, pigmentos escuros solúveis, ângulo hue, antocianinas totais, flavonóides amarelos, carotenóides totais e polifenóis totais, e os atributos sensoriais de sabor, textura, impressão global e intenção de compra apresentaram variações significativas pelo efeito dos métodos de cocção realizados. A cor das amostras cozidas foi menos brilhante (L*), vermelho (a*) e amarelo (b*) do que a cor da amostra in natura. A perda de cores vivas (diminuição de croma) em relação à abóbora in natura foi observada para todas as amostras cozidas. Todos os métodos de cocção reduziram os conteúdos de ácido ascórbico, antocianinas totais e polifenóis totais. Os carotenóides totais variaram de 8.933,92 a 24.772,72 µg 100 g-1 de amostra fresca, sendo elevados em 24,58% na cocção em micro-ondas e em 2,26% na cocção em ebulição, enquando as cocções no vapor e no vácuo (sous-vide) provocaram redução. Os flavonóides amarelos foram mais preservados na cocção em micro-ondas e variaram de 9,31 a 13,73 mg 100 g-1 entre as cocções realizadas. A cocção sous-vide ocasionou as maiores perdas de componentes funcionais, sendo atribuídas ao maior tempo de cocção e a degradação pela luz. Os produtos não apresentaram contaminações microbiológicas. A cocção em micro-ondas foi a que apresentou maiores médias para os atributos sensoriais avaliados. As outras três cocções também foram bem aceitas pelos provadores, representando nichos diferenciados de mercado. A abóbora possui muitos atributos de qualidade, apresentando elevados níveis de componentes funcionais, sendo a cocção em micro-ondas o método preferido para promover a sua cocção.
Pumpkin is a vegetable that has a remarkable nutritional importance, especially because it is a rich source of carotenoids, the essential compounds to human nutrition. Although the cooking methods may influence the retention of nutrients and phytochemicals in foods, there is a need to know the best way to promote cooking in pumpkin, minimizing the significant nutritional and sensory loss. This study aimed to determine and compare the quality attributes of fresh pumpkin, achieved by different cooking methods: boiling, steam, vacuum (sous-vide) and microwave. It was made chemical and physico-chemical determinations, staining, functional constituents and microbiological and sensory analysis of the products. At the end of the study, it was found that the parameters of soluble solids, non-reducing sugars, total sugars, soluble dark pigments, hue angle, total anthocyanins, yellow flavonoids, carotenoids and phenolic compounds, and the sensory attributes of flavor, texture, overall impression and purchase intention presented significant variations for the effect of the performed cooking methods. The color of cooked samples was less bright (L*), red (a*) and yellow (b*) than the color of the fresh sample. The loss of vivid colors (reduction of chroma) over the fresh pumpkin was observed for all cooked samples. All cooking methods reduced the content of ascorbic acid, anthocyanins and total polyphenols. Total carotenoids ranged from 8,933.92 to 24,772.72 mg 100 g-1 of fresh sample, and 24.58% higher in cooking in microwave and 2.26% cooking in boiling, while the cooks in the steam and in vacuum (sous-vide) caused a reduction. The yellow flavonoids were more preserved for cooking in microwave and ranged from 9.31 to 13.73 mg 100 g-1 between the brews made. The sous-vide cooking caused the greatest loss of functional components, being attributed to increased cooking time and degradation by light. The products showed no microbiological contamination. The cooking in microwave showed the highest scores for all sensory attributes evaluated. The other three cooking were also well accepted by panelists, representing different market niches. Pumpkin has many quality attributes, with high levels of functional components, and cooking in microwave oven is the preferred method to promote their cooking.