Дисертації з теми "Temporal media"
Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Temporal media.
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "Temporal media".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
1
Preotiuc-Pietro, Daniel. "Temporal models of streaming social media data." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/6379/.
Анотація:
There are significant temporal dependencies between online behaviour and occurring real world activities. Particularly in text modelling, these are usually ignored or at best dealt with in overly simplistic ways such as assuming smooth variation with time. Social media is a new data source which present collective behaviour much more richly than traditional sources, such as newswire, with a finer time granularity, timely reflection of activities, multiple modalities and large volume. Analysing temporal patterns in this data is important in order to discover newly emerging topics, periodic occurrences and correlation or causality to real world indicators or human behaviour patterns. With these opportunities come many challenges, both engineering (i.e.\ data volume and processing) and algorithmic, namely the inconsistency and short length of the messages and the presence of large amounts of irrelevant messages to our goal. Equipped with a better understanding of the dynamics of the complex temporal dependencies, tasks such as classification can be augmented to provide temporally aware responses. In this thesis we model the temporal dynamics of social media data. We first show that temporality is an important characteristic of this type of data. Further comparisons and correlation to real world indicators show that this data gives a timely reflection of real world events. Our goal is to use these variations to discover emerging or recurring user behaviours. We consider both the use of words and user behaviour in social media. With these goals in mind, we adapt existing and build novel machine learning techniques. These span a wide range of models: from Markov models to regularised regression models and from evolutionary spectral clustering which models smooth temporal variation to Gaussian Process regression which can identify more complex temporal patterns. We introduce approaches which discover and predict words, topics or behaviours that change over time or occur with some regularity. These are modeled for the first time in the NLP literature by using Gaussian Processes. We demonstrate that we can effectively pick out patterns, including periodicities, and achieve state-of-the-art forecasting results. We show that this performance gain transfers to improve tasks which do not take temporal information in account. Further analysed is how temporal variation in the text can be used to discover and track new content. We develop a model that exploits the variation in word co-occurrences for clustering over time. Different collection and processing tools, as well as several datasets of social media data have been developed and published as open-source software. The thesis posits that temporal analysis of data, from social media in particular, provides us with insights into real-world dynamics. Incorporating this temporal information into other applications can benefit standard tasks in natural language processing and beyond.
2
Lu, Bo. "Theoretical examination of scattering media by temporal analysis." Thesis, University of Nottingham, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438572.
3
Celerier, Jean-Michael. "Authoring interactive media : a logical & temporal approach." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0037/document.
Анотація:
La question de la conception de médias interactifs s'est posée dès l'apparition d'ordinateurs ayant des capacités audio-visuelles. Un thème récurrent est la question de la spécification temporelle d'objets multimédia interactifs : comment peut-on créer des présentations multimédia dont le déroulé prend en compte des événements extérieurs au système.Ce problème rejoint un autre champ d'application, qui est celui de la musique et plus spécifiquement des partitions interactives : des pièces musicales dont l'interprétation pourra varier dans le temps en fonction d'indications données par la partition.Dans les deux cas, il est nécessaire de spécifier les médias et données musicales qui seront orchestrées par le système. C'est le sujet de la première partie de cette thèse, qui présente un modèle adapté pour la conception d'applications multimédia permettant de répondre à des problématiques d'accès réparti et de contrôle à distance, ainsi que de documentation.Une fois ce modèle défini, on construit en s'inspirant des systèmes à flots de donnée courants dans les environnements adaptés à la musique en temps réel un environnement de calcul permettant de contrôler les paramètres des applications définies précédemment, ainsi que de générer des entrées & sorties sous forme audio-visuelle. En particulier, une notion d'environnement permanent dans ce modèle de données est introduite. Elle simplifie certains cas d'usages courants en informatique musicale, et améliore les performances par rapport à une solution uniquement basée sur de la communication entre nœuds explicites du système.Enfin, une structure de graphe temporel est introduite : elle permet de définir les parties du graphe de données qui vont être actives à un instant donné d'une partition interactive. En particulier, les connections entre objets du graphe de données sont étudiées dans le cadre de déroulements synchrones et différés.Un langage d'édition visuel est introduit pour l'écriture de scénarios dans un modèle graphique réunissant les éléments introduits précédemment.La structure temporelle est par la suite étudiée sous l'axe de la répartition. On montre notamment qu'il est possible d'acquérir un pouvoir expressif supplémentaire en supposant une exécution concurrente de certains objets de la structure temporelle.Enfin, on présente comment le système permet de recréer nombre de systèmes musicaux existants : séquenceurs, live-loopers, et patchers, ainsi que les nouveaux types de comportements multimédias rendus possiblesInteractive media design is a field which has been researched as soon as computers started showing audio-visual capabilities. A common research theme is the temporal specification of interactive media objects: how is it possible to create multimedia presentations whose schedule takes into account events external to the system.This problem is shared with another research field, which is interactive music and more precisely interactive scores. That is, musical works whose performance will evolve in time according to a given score.In both cases, it is necessary to specify the medias and musical data orchestrated by the system: this is the subject of the first part of this thesis, which presents a model tailored for the design of multimedia applications. This model allows to simplify distributed access and remote control questions, and solves documentation-related problems.Once this model has been defined, we construct by inspiration with well-known data-flow systems used in music programming, a computation structure able to control and orchestrate the applications defined previously, as well as handling audio-visual data input and output.Specifically, a notion of permanent environment is introduced in the data-flow model: it simplifies multiple use cases common when authoring interactive media and music, and improves performance when comparing to a purely node-based approach.Finally, a temporal graph structure is presented: it allows to score parts of the data graph in time. Especially, nodes of the data graph are studied in the context of both synchronous and delayed cases.A visual edition language is introduced to allow for authoring of interactive scores in a graphical model which unites the previously introduced elements.The temporal structure is then studied from the distribution point of view: we show in particular that it is possible to earn an additional expressive power by supposing a concurrent execution of specific objects of the temporal structure.Finally, we expose how the system is able to recreate multiple existing media systems: sequencers, live-loopers, patchers, as well as new multimedia behaviours
4
Zhao, Liang. "Spatio-temporal Event Detection and Forecasting in Social Media." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/81904.
Анотація:
Nowadays, knowledge discovery on social media is attracting growing interest. Social media has become more than a communication tool, effectively functioning as a social sensor for our society.
This dissertation focuses on the development of methods for social media-based spatiotemporal event detection and forecasting for a variety of event topics and assumptions. Five methods are proposed, namely dynamic query expansion for event detection, a generative framework for event forecasting, multi-task learning for spatiotemporal event forecasting, multi-source spatiotemporal event forecasting, and deep learning based epidemic modeling for forecasting influenza outbreaks. For the first of these methods, existing solutions for spatiotemporal event detection are mostly supervised and lack the flexibility to handle the dynamic keywords used in social media. The contributions of this work are: (1) Develop an unsupervised framework; (2) Design a novel dynamic query expansion
method; and (3) Propose an innovative local modularity spatial scan
algorithm.
For the second of these methods, traditional solutions are unable to capture the spatiotemporal context, model mixed-type observations, or utilize prior geographical knowledge. The contributions
of this work include: (1) Propose a novel generative model for spatial event
forecasting; (2) Design an effective algorithm for model parameter
inference; and (3) Develop a new sequence likelihood calculation
method. For the third method, traditional solutions cannot deal with spatial heterogeneity or handle the dynamics of social media data effectively.
This work's contributions include: (1) Formulate a multi-task learning framework for event forecasting; (2) simultaneously model static and dynamic terms; and (3) Develop efficient parameter optimization algorithms.
For the fourth method, traditional multi-source solutions typically fail to consider the geographical hierarchy or cope with incomplete data blocks among different sources.
The contributions here are: (1) Design a framework for event forecasting based
on hierarchical multi-source indicators; (2) Propose a robust model for geo-hierarchical feature
selection; and (3) Develop an efficient algorithm for model parameter optimization.
For the last method, existing work on epidemic modeling either cannot ensure timeliness, or cannot characterize the underlying epidemic propagation mechanisms. The contributions of this work include: (1) Propose a novel integrated framework for computational epidemiology and social media mining; (2) Develop a semi-supervised multilayer perceptron for mining epidemic features; and (3) Design an online training algorithm.Ph. D.
5
Liu, Fang 1962. "Modeling spatial and temporal textures." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/29131.
6
Jukna, Vytautas. "Conical wave triggered transient spatio-temporal effects in Kerr media." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20121001_093530-53415.
Анотація:
Thesis consists of introduction, followed by five main chapters and conclusions. Introduction is devoted to the explanation of filamentation process. The mechanisms responsible for filament generation and evolution are explained first and various models of the filamentation are presented as well. The second chapter is devoted to the study on supercontinuum spectrum dependence on the initial pulse diameter. The chapter 4 is devoted to the study of the filamentation in scattering medium, and covers the performed experiment, explanation of new developed numerical scheme, and finally comparison of the numerical and experimental results. The chapter 5 describes the multifilamentation with elliptical beam. The role of the four wave mixing to the filaments periodicity is briefly explained. The periodicity dependence on the wave of intensity as well the evolution of multifilamentation is shown. Three dimensional study of the modulation instability during multifilamentation process is also presented in chapter 5. The last chapter 6 is devoted to the origin of the rogue wave statistics in supercontinuum generation, and comparison of the numeric results with experimental. At the end (chapter 7) the main conclusions of the current work are presented.Disertaciją sudaro įvadas, penki pagrindiniai skyriai ir išvados. Įvade aiškinamas sudėtingas šviesos gijų formavimosi procesas. Paaiškinami fizikiniai reiškiniai, lemiantys šviesos gijų generacijos bei evoliucijos ypatybes, supažindinama su įvairiais šviesos gijų susidarymo ir sklidimo modeliais. Antrajame skyriuje nagrinėjama pradinio pluošto diametro įtaka superkontinuumo spektrui. Trečias skyrius, skirtas šviesos gijų generacijos sklaidančioje terpėje tyrimui, apima atlikto eksperimento bei sukurtos naujos skaitmeninio modeliavimo schemos pristatymą, ir, galiausiai, skaitmeninio modeliavimo ir eksperimentinių rezultatų palyginimą. Ketvirtame skyriuje nagrinėjama daugelio gijų generacija elipsiniais pluoštais. Trumpai paaiškinta kaskadinio keturbangio maišymo įtaka šviesos gijų periodiškumui. Ištirta šviesos gijų periodo priklausomybė nuo bangos intensyvumo, ir atskleista daugelio gijų generacijos dinamika. Moduliacinio nestabilumo analizė ir jos įtaka taip pat pateikiama ketvirtame skyriuje. Penktajame skyriuje nagrinėjama ekstremalių įvykių tūrinėje Kerro terpėje atsiradimas. Palyginami plataus spektro generacijos kompiuterinio modeliavimo ir eksperimento metu surinkti statistiniai duomenys. Pabaigoje pateikti pagrindiniai darbo rezultatai ir išvados.
7
Falk, Hampus. "Measure development and social media analysis using temporal text networks." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-393305.
Анотація:
The widespread social media usage generates an immense amount of data. Data which is highly beneficial to several domains whether monetary or research based. Various models exist to extract this data however analysis tend to be restrictive. The temporal text network model is a dynamic network model built upon the foundation of temporal networks. It provides text as a variable and considers messages passed between users while maintaining the time of transmission, making it suitable for social media analysis. No measures exist to perform this analysis, the objective of this thesis was therefore to develop measures to be used in the mapping of communicative behaviour on two Twitter datasets. The created measures conclude that communication is similar on Twitter no matter the domain observed. When further reducing the scope of a political dataset, information regarding the social media presence between parties and the localization of key questions was found.
8
Nagae, Mirian Hideko 1965. "Estudo eletromiografico das partes anterior media e posterior do musculo temporal na cinetica mandibular." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288798.
Анотація:
Orientador: Fausto BerzinTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
Made available in DSpace on 2018-08-08T05:46:35Z (GMT). No. of bitstreams: 1 Nagae_MirianHideko_D.pdf: 2106421 bytes, checksum: 2ee2d856ed2843157f40629bebd6ed09 (MD5) Previous issue date: 2007
Resumo: Este estudo teve por finalidade investigar por meio da eletromiografia de superfície a atividade elétrica, unilateral direita das partes anterior, média e posterior do músculo temporal, na situação postural de repouso mandibular, durante a contração voluntária máxima (CVM) e nos movimentos de abaixamento leve e máximo mandibular, propulsão, retropulsão, protrusão, retrusão, lateralidade homolateral direita e lateralidade contralateral. Foram investigados 21 sujeitos, gênero masculino, Classe I de Angle, com faixa etária entre 18 e 40 anos, tricotomizados, sem história de Disfunção Temporomandibular, bruxismo e/ou apertamento dental. O equipamento utilizado foi o eletromiógrafo Myosystem I da DataHominis Tecnologia Ltda, 12 canais, 12 bites de resolução, CMRR de 112dB @ 60Hz com módulo de conexão para eletrodos passivos, ajuste para ganho entre 1 a 16.000 vezes, filtro Butterworth, passa alta de 15Hz e passa baixa de 1KHz, placa conversora A/D, modelo PCI-DAS 1200, Myosystem da Prosecon Ltda. O eletrodo de referência foi fixado junto ao osso externo do voluntário e para a captação dos sinais foi utilizado eletrodo de superfície passivo, descartável, bipolar da NoraxonÒ USA Inc, modelo 272, formato circular, diâmetro de 1cm, de Ag/AgCl, com distância intereletrodo pré-fixado de 1cm, acoplados a um pré-amplificador da Lynx Tecnologia, formando um circuito correspondente a um transdutor diferencial. Para processamento e análise dos sinais foi utilizado o software Myosystem-BR1 da DataHominis Tecnologia Ltda (versão 2.9). Os sinais foram captados com os voluntários sentados, com o plano de Frankfürt paralelo ao solo, olhos abertos e fixos no horizonte. A freqüência de amostragem para a captação do sinal foi de 2000Hz e a duração de cada situação analisada foi de 5 segundos. Para análise do sinal eletromiográfico foi calculado o valor do Root Means Square (RMS). Na situação postural de repouso os valores obtidos não foram considerados estatisticamente significativos para a atividade elétrica das partes anterior, média e posterior do músculo temporal, de acordo com os testes de Shapiro-Wilk (1965), coeficiente de assimetria e teste do sinal. A função de correlação entre as partes anterior, média e posterior do músculo temporal foi considerada estatisticamente significativa na posição postural de repouso, para as partes média e posterior (63%); na contração voluntária máxima, para as partes anterior e posterior(74%); no abaixamento leve mandibular, para as partes média e posterior (63%); no abaixamento máximo mandibular, para as partes anterior e média (68%), partes média e posterior (67%) e partes anterior e posterior (61%); na propulsão mandibular, para as partes anterior e média (67%); na protrusão mandibular, para as partes anterior e média (67%) e partes média e posterior (60%); na retrusão mandibular, para as partes média e posterior (62%), anterior e média (61%) e anterior e posterior (60%); na lateralidade mandibular homolateral direita, para as partes média e posterior (76%); na lateralidade mandibular contralateral, para as partes média e posterior (70%) e somente para retropulsão mandibular não houve correlação estatisticamente significativa para nenhuma das partes
Abstract: This study aimed at investigating through surface myography the electrical activity of front, middle, and back parts of temporal muscle, situation of resting jaw, during maximal voluntary contraction (MVC), and in the movements of slight and maximal mandibular drop, propulsion, retropulsion, protusion, retrusion, right homolateral laterality, and contralateral laterality. There were 21 subjects investigated, male gender, Angle Class I, age group ranging from 18 to 40 years old, tricotomized, showing no history of Temporomandibular, bruxism, and/or dental clenching. The equipment used was Myosystem I electromyographer by DataHominis Tecnologia Ltda, with 12 channels, resolution of 12 bytes, CMRR of 112dB @ 60Hz with connection module for passive electrodes, adjustment para ganho between 1 to16.000 times, Butterworth filter, 15Hz high pass, and 1KHz low pass; A/D converting plaque, model PCI-DAS 1200 , Myosystem by Prosecon Ltda. Reference electrode was fixed next to the volunteer¿s external bone, and to pick up the signal a passive surface electrode was used, dischargeable, bipolar by NoraxonÒ USA Inc, model 272, circular shaped, 1cm in diameter, of Ag/AgCl, with distance between the electrodes pre-fixed in 1cm, coupled together to a pre-amplifier by Lynx Tecnologia, forming a circuit corresponding to a differential transducer. To process and analyze signals it was used the Myosystem-BR1 software by DataHominis Tecnologia Ltda (version 2.9). The signals were picked up with volunteers sitting, with the Frankfurt plan parallel to the floor, open eyes and horizon gazing. The sampling frequency to pick up the signal was of 2000Hz, and the duration of each event was of 5 seconds. For the electromyography signal analysis it was calculated the Root Means Square (RMS) value. At the resting posture position the values obtained were not considered statistically significant for the electrical activity of the front, middle, and back parts of the temporal muscle, according to Shapiro-Wilk tests (1965), asymmetry coefficient, and signal test. The correlation function between front, middle, and back parts of temporal muscle was considered statistically significant at the resting posture situation, to the middle and back parts (63%); at the maximal voluntary contraction , to the front and back parts (74%); at the slight mandibular drop, to the middle and back parts (63%); at the maximal mandibular drop, to the front and middle parts (68%), back and middle parts (67%),and front and back parts (61%); at the mandibular propulsion, to the front and middle parts (67%); at the mandibular protusion, to the front and middle parts (67%), and back and middle parts (60%); at the mandibular retrusion, to the middle and back parts (62%), front and middle (61%), and front and back (60%); at the right mandibular homolateral laterality, to the middle and back parts (76%); at the mandibular contralateral laterality, to the middle and back parts (70%), and only to the mandibular retropulsion there was no correlation statistically significant to any of the parts
Doutorado
Anatomia
Doutor em Biologia Buco-Dental
9
Peña, Araya Vanessa Carolina. "Spatio-temporal historical event visual exploration through social media-based models." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/168484.
Анотація:
Tesis para optar al grado de Doctora en Ciencias, Mención ComputaciónLas plataformas de redes sociales en lı́nea sirven como importantes fuentes de información acerca de lo que está pasando en el mundo y cómo la gente reacciona a estos eventos. Dentro de toda la información útil que los cientı́ficos han extraı́do de estos repositorios, el análisis de mensajes relacionados con eventos del mundo real son una importante oportunidad para realizar análisis histórico de noticias. Como los mensajes publicados en estas plataformas contienen distintos puntos de vista de una noticias, contribuyen con información que quizás no haya sido publicada por los medios tradicionales. Dentro de los aspectos que se pueden estudiar de un evento noticioso, las relaciones geopolı́ticas como consecuencia de ellos contienen información valiosa para análisis histórico futuro. En efecto, entender las relaciones entre paı́ses, su desarrollo en el tiempo y cómo las personas reaccionaron a ellas es esencial para comprender el presente. Sin embargo, extraer información útil desde estas plataformas no es una tarea fácil dada la creciente velocidad de publicación de sus mensajes, lo no estruturado de su contenido y la enormidad de repositorios que generan. Por otra parte, para extraer conocimiento nuevo se necesitan herramientas que permitan la generación de hipótesis nuevas por parte de expertos en un dominio. Esta necesidad de colaboración entre sistemas computacionales y usuarios finales hace que el problema tenga dos componentes. El primer componente es que los datos pueden ser difı́ciles de guardar, recuperar y procesar sin las representaciones adecuadas de alto nivel. El segundo componente es que explorar con ojos humanos un gran número de mensajes puede ser imposible sin las herramientas adecuadas. El objetivo de esta tesis es abordar estos dos problemas. El primer problema, relacionado con la eficiencia del procesamiento computacional de los datos, se aborda presentando una representación de alto nivel de eventos noticiosos en su contexto geopolı́tico. Más especı́ficamente, proponemos una representación de eventos consciente del contexto espacio temporal que incorpora tanto la información de las ubicaciones que están involucradas en el mundo real como de aquellas hasta donde se propagó el evento. Exploramos la utilidad de este modelo usando datos de eventos noticiosos extraı́dos desde Twitter en una ventana de tiempo de dos años. Abordamos el segundo problema, relacionado con la exploración de mensajes por expertos en un dominio, diseñando herramientas visuales para exporarlas. Primero diseñamos una interfaz web visual, llamada Galean, que permite a usuarios explorar noticias dada la representación de eventos anteriormente mencionada. Evaluamos esta interfaz a través de un estudio cualitativo con potenciales usuarios finales y uno cuantitativo con 30 participantes. Dada la retroalimentación recibida en esas instancias, diseñamos y evaluamos una nueva manera de visualizar datos geográficos y temporales llamada Cartoglyphs.
CONICYT, Instituto Milenio en Fundamentos de los Datos
10
Koivunen, P. (Petri). "Otitis media in children:detection of effusion and influence on hearing." Doctoral thesis, University of Oulu, 1999. http://urn.fi/urn:isbn:9514252314.
Анотація:
Abstract
This study was undertaken to improve the diagnosis of otitis media and to investigate possible hearing loss caused by middle ear effusion (MEE) in small children.
The accuracy of minitympanometry in detecting MEE was evaluated in 162 children. The finding was compared with the amount of effusion found in myringotomy. Minitympanometry proved to be an accurate method to detect MEE in young children, the sensitivity and specificity values being 79% and 93% in cooperative children but it had no value in non-cooperative children. Minitympanometric examination could be performed successfully with good cooperation in 87% of a total of 206 children in paediatric outpatient clinic.
Impaired mobility of the tympanic membrane (TM) was the best sign of MEE in pneumatic otoscopy of 76 children, with sensitivity and specificity values of 75% and 90%, respectively.
The influence of nitrous oxide (N2O) on MEE was tested by weighting the effusion found in myringotomy during general anaesthesia with and without N2O in 39 and 37 children, respectively. The mean weight of the effusion in the oxygen-air group did not differ from the weight in the N2O group, and thus peroperative findings in myringotomy are reliable.
Studies on symptomatology and the temporal development of acute otitis media (AOM) during upper respiratory tract infection (URI) were based on three-month follow-up of 857 children. Symptoms of URI only were compared with symptoms of URI complicated by AOM in the same child in 138 children. The most important symptom associated with AOM was earache, with a relative risk of 21.3. Sore throat, night restlessness and fever at days 3-6 were also significantly associated with AOM, with relative risks of 3.2, 2.6 and 1.8, respectively. In 44 children under two years of age, earache, conjunctival symptoms and cloudy rhinitis were significantly associated with AOM.
Temporal development of AOM was assessed from 250 episodes in 184 children. Sixty-three per cent of cases of AOM occurred during the first week after the onset of URI, peaking on days 2 to 5. The onset of AOM in children with a history of recurrent episodes of AOM did not differ from that in those who had experienced only a few episodes of AOM. No individual tendency was noticed among children suffering more than one AOM episode during follow-up.
To assess the influence of the quantity and quality of MEE on hearing in small children, transient evoked otoacoustic emission (TEOAE) was performed under general anaesthesia before myringotomy in 185 ears of 102 children. Reduced TEOAEs indicating hearing loss were found in 83% of the ears with mucoid effusion and in 56% of the ears with non-mucoid effusion, the difference being statistically significant (p < 0.01). A significant negative correlation between the reproducibility of TEOAE responses and the amount of effusion was found (Spearman rank correlation coefficient r = -0.589, p < 0.001). Findings in minitympanometry correlated with the responses of TEOAE.
Although parents are able to predict AOM quite reliably, various symptoms and the duration of URI seems to be of little value in helping the diagnosis of AOM. Detection of effusion in OM may be improven by minitympanometry in cooperative children. Any kind of effusion may cause hearing loss in small children, which must be considered when treating OM.
11
Wong, Yin Yin. "Temporal typography : characterization of time-varying typographic forms." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/29102.
12
Burke, Robert Carrington 1976. "It's about time : temporal representations for synthetic characters." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/61119.
Анотація:
Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2001.Includes bibliographical references (p. 91-93).
Inspired by recent work in ethology and animal training, we integrate representations for time and rate into a behavior-based architecture for autonomous virtual creatures. The resulting computational model of affect and action selection allows these creatures to discover and refine their understanding of apparent temporal causality relationships which may or may not involve self-action. The fundamental action selection choice that a creature must make in order to satisfy its internal needs is whether to explore, react or exploit. In this architecture, that choice is informed by an understanding of apparent temporal causality, the representation for which is integrated into the representation for action. The ability to accommodate changing ideas about causality allows the creature to exist in and adapt to a dynamic world. Not only is such a model suitable for computational systems, but its derivation from biological models suggests that it may also be useful for gaining a new perspective on learning in biological systems. The implementation of a complete character built using this architecture is able to reproduce a variety of conditioning phenomena, as well as learn using a training technique used with live animals.
by Robert Carrington Burke.
S.M.
13
Mounaix, Mickaël. "Matricial approaches for spatio-temporal control of light in multiple scattering media." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066562/document.
Анотація:
L’imagerie optique à travers des milieux diffusants, comme des milieux biologiques ou de la peinture blanche, reste un challenge car l’information spatiale portée par la lumière incidente est mélangée par les évènements multiples de diffusion. Toutefois, les modulateurs spatiaux de lumière (SLM) disposent de millions de degrés de liberté pour contrôler le profil spatial de la lumière en sortie du milieu, en forme de tavelure (speckle), avec des techniques de modulation du front d’onde. Cependant, si le laser génère une impulsion brève, le signal transmis s’allonge temporellement, car le milieu diffusant répond différemment pour les diverses composantes spectrales de l’impulsion. Nous avons développé, au cours de cette thèse, des méthodes de contrôle du profil spatiotemporel d’une impulsion brève transmise à travers un milieu diffusant. En mesurant la Matrice de Transmission Multi-Spectrale ou Résolue-Temporellement, la propagation de l’impulsion peut être totalement décrite dans le domaine spectral ou temporel. Avec des techniques de manipulation du front d’onde, les degrés de libertés spectraux/temporel peuvent être ajustés avec un unique SLM via la diversité spectrale du milieu diffusant. Nous avons démontré, de manière déterministe, la focalisation spatio-temporelle d’une impulsion brève après propagation dans un milieu diffusant, avec une compression temporelle proche de la durée initiale de l’impulsion, à différentes positions de l’espace-temps. Nous avons également démontré un façonnage contrôlé du profil temporel de l’impulsion, notamment avec la génération d’impulsions doubles. Nous exploitons cette focalisation spatio-temporelle pour exciter un processus optique non-linéaire, la fluorescence à deux photons. Cette approche ouvre des perspectives intéressantes pour le contrôle cohérent, l’étude de l’interaction lumière-matière ainsi que l’imagerie multi-photoniqueOptical imaging through highly disordered media such as biological tissue or white paint remains a challenge as spatial information gets mixed because of multiple scattering. Nonetheless, spatial light modulators (SLM) offer millions of degrees of freedom to control the spatial speckle pattern at the output of a disordered medium with wavefront shaping techniques. However, if the laser generates a broadband ultrashort pulse, the transmitted signal becomes temporally broadened as the medium responds disparately for the different spectral components of the pulse. We have developed methods to control the spatio-temporal profile of the pulse at the output of a thick scattering medium. By measuring either the Multispectral or the Time- Resolved Transmission Matrix, we can fully describe the propagation of the broadband pulse either in the spectral or temporal domain. With wavefront shaping techniques, one can control both spatial and spectral/temporal degrees of freedom with a single SLM via the spectral diversity of the scattering medium. We have demonstrated deterministic spatio-temporal focusing of an ultrashort pulse of light after the medium, with a temporal compression almost to its initial time-width in different space-time position, as well as different temporal profile such as double pulses. We exploit this spatio-temporal focusing beam to enhance a non-linear process that is two-photon excitation. It opens interesting perspectives in coherent control, light-matter interactions and multiphotonic imaging
14
Hartley, Douglas E. H. "Effects of conductive hearing loss on auditory temporal resolution." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365822.
15
De, Rybel Tom. "Temporal-spatial discretization and fractional latency techniques for wave propagation in heterogeneous media." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/20573.
Анотація:
This thesis presents the development of a novel, transient wave propagation simulator using time-decoupled transmission line models. The models are based on the electro-magnetic transient program (EMTP) power system transient analysis tools, extended to two dimensions. The new tool is targeted at acoustic wave propagation phenomena. The method, called TINA for transient insular nodal analysis, uses temporal interpolation and fractional latency to maintain synchronicity in heterogeneous media. The fractional latency method allows the model cells to operate at a local simulation time step which can be a non-integer ratio of the global simulation time step. This simplifies synchronicity and saves computation time and memory. Thévenin equivalents are used to interface the mesh cells and provide an abstraction of the cell content. Numerically, the method is of the transmission-line matrix (TLM) family. In the thesis, loss-less and distortion-less models are considered. The loss-less transmission line models are studied for their stability and numerical error, for which analytical expressions are derived based on the simulation parameters. A number of new relations were discovered and discussed. The TINA method is evaluated in 2D using acoustic experiments, and also a new method is proposed for obtaining impulse responses in time-domain simulation, based on a periodic, band-limited impulse signals.
16
Wittenhagen, Moritz [Verfasser], Jan Oliver [Akademischer Betreuer] Borchers, and Michael [Akademischer Betreuer] Rohs. "Temporal navigation in hierarchically structured media / Moritz Wittenhagen ; Jan Oliver Borchers, Michael Rohs." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1129876128/34.
17
Serfass, David G. "Assessing situations on social media| Temporal, demographic, and personality influences on situation experience." Thesis, Florida Atlantic University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10172674.
Анотація:
Social media posts are used to examine what people experience in their everyday lives. A new method is developed for assessing the situational characteristics of social media posts based on the words used in these posts. To accomplish this, machine learning models are built that accurately approximate the judgments of human raters. This new method of situational assessment is applied on two of the most popular social media sites: Twitter and Facebook. Millions of Tweets and Facebook statuses are analyzed. Temporal patterns of situational experiences are found. Geographic and gender differences in experience are examined. Relationships between personality and situation experience were also assessed. Implications of these finding and future applications of this new method of situational assessment are discussed.
18
Werman, Sarah. "Newspaper Representations of Homelessness: A Temporal Comparative Analysis." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7536.
Анотація:
This research focuses on the ways in which homelessness is discussed in two newspapers in a major city in the intermountain United States. I analyzed newspaper articles with the goal of understanding public discourse in two ideologically distinct newspaper venues. I examined the news media portrayal of the homeless in 752 articles in these two newspapers during two distinct six-month time periods, one during which the city was nationally recognized as a major advocate for “Housing First,” or “solving homelessness,” and a more recent period during which urban gentrification has challenged the location of homeless services. Specifically, I addressed the he primary informants drawn upon by the newspapers, and the potential “missing voices” in the media discussion. My research looks at homelessness in these papers both over time and across papers.
19
Ren, Haolin. "Visualizing media with interactive multiplex networks." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0036/document.
Анотація:
Les flux d’information suivent aujourd’hui des chemins complexes: la propagation des informations, impliquant éditeurs on-line, chaînes d’information en continu et réseaux sociaux, emprunte alors des chemins croisés, susceptibles d’agir sur le contenu et sa perception. Ce projet de thèse étudie l’adaptation des mesures de graphes classiques aux graphes multiplexes en relation avec le domaine étudié, propose de construire des visualisations à partir de plusieurs représentations graphiques des réseaux, et de les combiner (visualisations multi-vues synchronisées, représentations hybrides, etc.). L’accent est mis sur les modes d’interaction permettant de prendre en compte l’aspect multiplexe (multicouche) des réseaux. Ces représentations et manipulations interactives s’appuient aussi sur le calcul d’indicateurs propres aux réseaux multiplexes. Ce travail est basé sur deux jeux de données principaux: l’un est une archive de 12 ans de l’émission japonaise publique quotidienne NHK News 7, de 2001 à 2013. L’autre recense les participants aux émissions de télévision/radio françaises entre 2010 et 2015. Deux systèmes de visualisation s’appuyant sur une interface Web ont été développés pour analyser des réseaux multiplexes, que nous appelons «Visual Cloud» et «Laputa». Dans le Visual Cloud, nous définissons formellement une notion de similitude entre les concepts et les groupes de concepts que nous nommons possibilité de co-occurrence (CP). Conformément à cette définition, nous proposons un algorithme de classification hiérarchique. Nous regroupons les couches dans le réseau multiplexe de documents, et intégrons cette hiérarchie dans un nuage de mots interactif. Nous améliorons les algorithmes traditionnels de disposition de mise en forme de nuages de mots de sorte à préserver les contraintes sur la hiérarchie de concepts. Le système Laputa est destiné à l’analyse complexe de réseaux temporels denses et multidimensionnels. Pour ce faire, il associe un graphe à une segmentation. La segmentation par communauté, par attribut, ou encore par tranche temporelle, forme des vues de ce graphe. Afin d’associer ces vues avec le tout global, nous utilisons des diagrammes de Sankey pour révéler l’évolution des communautés (diagrammes que nous avons augmentés avec un zoom sémantique). Cette thèse nous permet ainsi de parcourir trois aspects (3V) des plus intéressants de la donnée et du BigData appliqués aux archives multimédia: Le Volume de nos données dans l’immensité des archives, nous atteignons des ordres de grandeurs qui ne sont pas praticables pour la visualisation et l’exploitation des liens. La Vélocité à cause de la nature temporelle de nos données (par définition). La Variété qui est un corollaire de la richesse des données multimédia et de tout ce que l’on peut souhaiter vouloir y investiguer. Ce que l’on peut retenir de cette thèse c’est que la traduction de ces trois défis a pris dans tous les cas une réponse sous la forme d’une analyse de réseaux multiplexes. Nous retrouvons toujours ces structures au coeur de notre travail, que ce soit de manière plus discrète dans les critères pour filtrer les arêtes par l’algorithme Simmelian backbone, que ce soit par la superposition de tranches temporelles, ou bien que ce soit beaucoup plus directement dans la combinaison d’indices sémantiques visuels et textuels pour laquelle nous extrayons les hiérarchies permettant notre visualisationNowadays, information follows complex paths: information propagation involving on-line editors, 24-hour news providers and social medias following entangled paths acting on information content and perception. This thesis studies the adaptation of classical graph measurements to multiplex graphs, to build visualizations from several graphical representations of the networks, and to combine them (synchronized multi-view visualizations, hybrid representations, etc.). Emphasis is placed on the modes of interaction allowing to take in hand the multiplex nature (multilayer) of the networks. These representations and interactive manipulations are also based on the calculation of indicators specific to multiplex networks. The work is based on two main datasets: one is a 12-year archive of the Japanese public daily broadcast NHK News 7, from 2001 to 2013. Another lists the participants in the French TV/radio shows between 2010 and 2015. Two visualization systems based on a Web interface have been developed for multiplex network analysis, which we call "Visual Cloud" and "Laputa". In the Visual Cloud, we formally define a notion of similarity between concepts and groups of concepts that we call co-occurrence possibility (CP). According to this definition, we propose a hierarchical classification algorithm. We aggregate the layers in a multiplex network of documents, and integrate that hierarchy into an interactive word cloud. Here we improve the traditional word cloud layout algorithms so as to preserve the constraints on the concept hierarchy. The Laputa system is intended for the complex analysis of dense and multidimensional temporal networks. To do this, it associates a graph with a segmentation. The segmentation by communities, by attributes, or by time slices, forms views of this graph. In order to associate these views with the global whole, we use Sankey diagrams to reveal the evolution of the communities (diagrams that we have increased with a semantic zoom). This thesis allows us to browse three aspects of the most interesting aspects of the data miming and BigData applied to multimedia archives: The Volume since our archives are immense and reach orders of magnitude that are usually not practicable for the visualization; Velocity, because of the temporal nature of our data (by definition). The Variety that is a corollary of the richness of multimedia data and of all that one may wish to want to investigate. What we can retain from this thesis is that we met each of these three challenges by taking an answer in the form of a multiplex network analysis. These structures are always at the heart of our work, whether in the criteria for filtering edges using the Simmelian backbone algorithm, or in the superposition of time slices in the complex networks, or much more directly in the combinations of visual and textual semantic indices for which we extract hierarchies allowing our visualization
20
Jagdish, Deepak. "IMMERSION : a platform for visualization and temporal analysis of email data." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/95606.
Анотація:
Thesis: S.M., Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2014.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 75-76).
Visual narratives of our lives enable us to reflect upon our past relationships, collaborations and significant life events. Additionally, they can also serve as digital archives, thus making it possible for others to access, learn from and reflect upon our life's trajectory long after we are gone. In this thesis, I propose and develop a webbased platform called Immersion, which reveals the network of relationships woven by a person over time and also the significant events in their life. Using only metadata from a person's email history, Immersion creates a visual account of their life that they can interactively explore for self-reflection or share it with others as a digital archive. In the first part of this thesis, I discuss the design, technical and privacy aspects of Immersion, lessons learnt from its large-scale deployment and the reactions it elicited from people. In the second part of this thesis, I focus on the technical anatomy of a new feature of Immersion called Storyline - an interactive timeline of significant life events detected from a person's email metadata. This feature is inspired by feedback obtained from people after the initial launch of the platform.
by Deepak Jagdish.
S.M.
21
Piskarskas, Rimtautas. "Spatio-temporal characterization of propagation of intense femtosecond light wave packets in Kerr media." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090901_074534-46464.
Анотація:
In the disertation, the self-focusing phenomenon of intense femtosecond light pulses in media with cubic nonlinearity is investigated and the origin of formation of light filaments is revealed. In this work, new measurement techniques are introduced and applied experimentally, which allowed high resolution temporal, spatial and spectral mapping of light wave-packet dynamics during the nonlinear propagation in transparent media, and enabled to observe and make accurate quantitative evaluation of the ultrafast change of medium properties.
By means of high temporal (20 fs) and spatial (1 μm) resolution laser 3D mapping technique, it was shown that the initial Gaussian wave packet during self-action in Kerr media redistributes its energy in a way that in spatio-temporal domain the wave packet takes a complex X-type intensity distribution. This transformation is universal and is determined by temporal and spatial spectral broadening (as a consequence of self-focusing and self phase modulation), conical emission (as a consequence of four-wave mixing) and nonlinear losses caused by multiphoton absorption.
By means of imaging spectrometer technique it was shown that in the medium with normal group velocity dispersion the far-field angular spectrum of the wave packet takes a characteristic X shape, whereas in anomalous group velocity dispersion regime – a characteristic O shape. In both cases the localization of the wave packet is observed, however the quantitative differences of the... [to full text]Disertacijoje nagrinėjamas intensyvių femtosekundinių šviesos impulsų fokusavimosi reiškinys kubinio netiesiškumo terpėse bei atskleidžiama šviesos gijų formavimosi prigimtis. Darbe yra pasiūlytos ir eksperimentiškai realizuotos šviesos bangų paketų registravimo metodikos, kurios leidžia su didele skyra fiksuoti laikinę, erdvinę bei spektrinę šviesos bangų paketų dinamiką netiesinio sklidimo metu, taip pat stebėti bei itin tiksliai kiekybiškai įvertinti terpės savybių sparčius pokyčius. Pasitelkus didelės laikinės (20 fs) ir erdvinės (1 μm) skyros lazerinės tomografijos metodiką, parodyta, kad pradinio Gauso formos bangų paketo energija saviveikos Kero terpėje metu persiskirsto taip, kad erdvėlaikyje jis įgauna sudėtingą X tipo intensyvumo skirstinį. Ši transformacija yra universali, ir ją nulemia laikinis ir erdvinis spektro plitimas (dėl fokusavimosi ir fazės moduliavimosi), kūginė spinduliuotė (dėl keturbangio maišymosi) bei nuostoliai dėl daugiafotonės sugerties. Remiantis atvaizduojančio spektrometro metodika parodyta, kad formuojantis šviesos gijai normalios grupinių greičių dispersijos terpėje bangų paketo tolimojo lauko kampinis spektrinis skirstinys yra X formos, o anomalios grupinių greičių dispersijos terpės atveju – O formos. Abiem atvejais stebima bangų paketo lokalizacija, tačiau kiekybinius kampinių spektrinių skirstinių skirtumus nulemia keturbangio dažnių maišymo fazinio sinchronizmo sąlygos. Ir galiausiai, naudojant didelės laikinės (23 fs) ir erdvinės (1,5... [toliau žr. visą tekstą]
22
Rothwell, Kneale J. "An architecture for an ATM network continuous media server exploiting temporal locality of access." Thesis, University of Kent, 1999. https://kar.kent.ac.uk/21782/.
Анотація:
With the continuing drop in the price of memory, Video-on-Demand (VoD) solutions that have so far focused on maximising the throughput of disk units with a minimal use of physical memory may now employ significant amounts of cache memory. The subject of this thesis is the study of a technique to best utilise a memory buffer within such a VoD solution. In particular, knowledge of the streams active on the server is used to allocate cache memory. Stream optimised caching exploits reuse of data among streams that are temporally close to each other within the same clip; the data fetched on behalf of the leading stream may be cached and reused by the following streams. Therefore, only the leading stream requires access to the physical disk and the potential level of service provision allowed by the server may be increased. The use of stream optimised caching may consequently be limited to environments where reuse of data is significant. As such, the technique examined within this thesis focuses on a classroom environment where user progress is generally linear and all users progress at approximately the same rate for such an environment, reuse of data is guaranteed. The analysis of stream optimised caching begins with a detailed theoretical discussion of the technique and suggests possible implementations. Later chapters describe both the design and construction of a prototype server that employs the caching technique, and experiments that use of the prototype to assess the effectiveness of the technique for the chosen environment using `emulated' users. The conclusions of these experiments indicate that stream optimised caching may be applicable to larger scale VoD systems than small scale teaching environments. Future development of stream optimised caching is considered.
23
Morgan, Bo. "Learning commonsense human-language descriptions from temporal and spatial sensor-network data." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/37383.
Анотація:
Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2006.Includes bibliographical references (p. 105-109) and index.
Embedded-sensor platforms are advancing toward such sophistication that they can differentiate between subtle actions. For example, when placed in a wristwatch, such platforms can tell whether a person is shaking hands or turning a doorknob. Sensors placed on objects in the environment now report many parameters, including object location, movement, sound, and temperature. A persistent problem, however, is the description of these sense data in meaningful human-language. This is an important problem that appears across domains ranging from organizational security surveillance to individual activity journaling. Previous models of activity recognition pigeon-hole descriptions into small, formal categories specified in advance; for example, location is often categorized as "at home" or "at the office." These models have not been able to adapt to the wider range of complex, dynamic, and idiosyncratic human activities. We hypothesize that the commonsense, semantically related, knowledge bases can be used to bootstrap learning algorithms for classifying and recognizing human activities from sensors.
(cont.) Our system, LifeNet, is a first-person commonsense inference model, which consists of a graph with nodes drawn from a large repository of commonsense assertions expressed in human-language phrases. LifeNet is used to construct a mapping between streams of sensor data and partially ordered sequences of events, co-located in time and space. Further, by gathering sensor data in vivo, we are able to validate and extend the commonsense knowledge from which LifeNet is derived. LifeNet is evaluated in the context of its performance on a sensor-network platform distributed in an office environment. We hypothesize that mapping sensor data into LifeNet will act as a "semantic mirror" to meaningfully interpret sensory data into cohesive patterns in order to understand and predict human action.
by Bo Morgan.
S.M.
24
Boettcher, Guilherme Bertini. "Visualization of news and press information diffusion in social media." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/134608.
Анотація:
As mídias sociais tiveram grande impacto no processo de inovação de jornais e revistas, porém adaptar-se em momentos de recessão ocasionou uma evolução apressada e procedimentos automatizados para mídias essencialmente diferentes. Apesar de haver estudos e soluções estado-da-arte em visualização para midias sociais dedicadas à análise do conteúdo e do comportamento de usuários, nenhum método é otimizado (e especializado) para encontrar padrões do ponto de vista de popularidade no contexto de canais de notícias. Nesta dissertação, discutimos duas diferentes propostas de utilização de combinações de técnicas de visualização que correlacionam as atividades de perfis e de sua comunidade de leitores com a popularidade resultante. Dados foram coletados reunindo postagens no Twitter, o número de seguidores dos perfis de interesse e os tópicos em tendência (trending topics) de canais da imprensa mundial para formar o conjunto de dados base para as propostas aqui apresentadas. Este conjunto de dados foi utilizado como semente para visualizações destinadas a possibilitar a comparação de múltiplas fontes, de forma que os usuários sejam habilitados a entender sua própria comunidade e também os sucessos e derrotas enfrentados pelos perfis competidores no mesmo meio. Essa análise foi validada através de entrevistas com um grupo de jornalistas de diferentes jornais estabelecidos. Através da interação com o sistema, é possível detectar padrões desconhecidos no grande volume de dados de mensagens e comentários de todo o mundo, possibilitando ao usuário uma visão única sobre os comportamentos e preferências de sua comunidade.Social media has played a big part in the innovation process for newspapers and magazines, but adapting while going through a recession has led to a hasty evolution and automated processes for very different media. While existing social media studies and state-of-the-art visual solutions are available for analyzing social media content and users’ behaviors, no other method is optimized for finding patterns from a popularity standpoint in the specialized realm of news channels. In this dissertation, we discuss two different usages of a combination of different visualization techniques that co-relate profiles’ and their reading community activities with the resulting popularity. We gathered Twitter posts, the number of followers and trending topics from worldwide press profiles as the data set foundation for our proposal. We used this data set as the seed for our visualizations to allow for multiple source comparison, so that not only the user is able to understand their own community but also the success and pitfalls faced by the competition in the same medium. We validate our analysis by interviewing a group of journalists from different established newspapers. Through interacting with our system, it was possible to detect hidden patterns in the massive dataset of messages and comments worldwide, enabling the users to have unique insights into their community’s behaviors and preferences.
25
Goodfellow, Marc. "Spatio-temporal modelling and analysis of epileptiform EEG." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/spatiotemporal-modelling-and-analysis-of-epileptiform-eeg(0f76259a-1a58-44a9-b08b-1402c9b49896).html.
Анотація:
In this thesis we investigate the mechanisms underlying the generation of abnormal EEG rhythms in epilepsy, which is a crucial step towards better treatment of this disorder in the future. To this end, macroscopic scale mathematical models of the interactions between neuronal populations are examined. In particular, the role of interactions between neural masses that are spatially distributed in cortical networks are explored. In addition, two other important aspects of the modelling process are addressed, namely the conversion of macroscopic model variables into EEG output and the comparison of multivariate, spatio-temporal data. For the latter, we adopt a vectorisation of the correlation matrix of windowed data and subsequent comparison of data by vector distance measures. Our modelling studies indicate that excitatory connectivity between neural masses facilitates self-organised dynamics. In particular, we report for the first time the production of complex rhythmic transients and the generation of intermittent periods of 'abnormal' rhythmic activity in two different models of epileptogenic tissue. These models therefore provide novel accounts of the spontaneous, intermittent transition between normal and pathological rhythms in primarily generalised epilepsies and the evocation of complex, self-terminating, spatio-temporal dynamics by brief stimulation in focal epilepsies. Two key properties of these models are excitability at the macroscopic level and the presence of spatial heterogeneities. The identification of neural mass excitability as an important processes in spatially extended brain networks is a step towards uncovering the multi-scale nature of the pathological mechanisms of epilepsy. A direct consequence of this work is therefore that novel experimental investigations are proposed, which in itself is a validation of our modelling approach. In addition, new considerations regarding the nature of dynamical systems as applied to problems of transitions between rhythmic states are proposed and will prompt future investigations of complex transients in spatio-temporal excitable systems.
26
Kanarick, Craig. "AIDE : case-based approach for designing graphics from locative and temporal data." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/79965.
27
Axelsson, Emil, and Rosin Tomas Forsyth. "Spatial-temporal multi-modal visualization of volumetric simulation and in situ satellite data." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-131151.
Анотація:
This thesis describes the work done by two students from Link¨oping University during a five month stay at Community Coordinated Modelling Center (CCMC) at the National Aeronautics and Space Administration (NASA). The work includes the implementation of algorithms for rendering time-varying volume simulation data from space weather simulations hosted by the CCMC, as well as visualizing photo sequences taken by the Solar Dynamics Observatory (SDO) satellite orbiting Earth. Both these capabilities are added to the OpenSpace software to create a multi-modal visualization where scientists, as well as museum audiences, can observe the Sun’s activity and its effects on the heliosphere as a whole. Both the simulation data and the image sequence provided by the SDO are typically larger than what can be fitted into the main memory of modern computers, which requires the data to be streamed from disk. Due to limitations caused by disk and GPU bandwidth, it is not possible to stream the full resolution data sets in interactive frame rates. A multi-resolution bricking scheme is implemented to allow for interactive visualization of the large volumetric data sets. To decrease GPU memory usage and minimize data streaming, subvolumes are represented using different spatial and temporal resolution depending on their relative importance to the visual quality. By introducing the concept of a memory budget and a streaming budget, the algorithm allows the user to control how the limited memory and streaming resources are utilized. To decrease the amount of data to be streamed when visualizing image sequences from SDO, a simpler multi-resolution bricking scheme has been implemented. Spatial resolution of different subregions of the image is varied based on their visibility and projected size on the screen. Results show that the presented implementations enable interactive visualization of volumetric space weather data and satellite data. By varying the streaming budget and memory budget for a volumetric simulation, frame rate can be traded against visual quality.
28
Donoghue, Karen. "An intelligent sketchpad : a gestural language for denoting temporal relations in dynamic design." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/61081.
29
Rosito, Leticia Petersen Schmidt. "Alterações histopatológicas na orelha contralateral em ossos temporais humanos de portadores de otite média crônica." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2006. http://hdl.handle.net/10183/11354.
Анотація:
Introdução: A otite média crônica é definida pela presença de alterações inflamatórias teciduais irreversíveis na fenda auditiva. A teoria do continuum a respeito da sua patogênese sugere que as fases mais precoces da otite média, aguda, serosa ou secretora podem progredir para cronificação. Desta forma, pode-se supor que a grande prevalência de bilateralidade da otite média secretora também pode ser observada na otite crônica. Objetivo: determinar a prevalência de alterações na orelha contralateral em ossos temporais humanos de portadores de otite média crônica. Metodologia: Os ossos temporais humanos foram analisados sob microscopia óptica. Definiu-se como orelha contralateral a orelha normal ou menos comprometida. As alterações histopatológicas foram classificadas por ordem crescente de gravidade. Para comparação entre as variáveis qualitativas, utilizou-se o teste de Chi-quadrado, nas correlações o coeficiente de Spearman, sendo estatisticamente significativos P≤0,05. Resultados: Foram estudados 85 pares de ossos temporais, 22,4% com colesteatoma no lado mais comprometido. A prevalência de orelhas contra laterais com alterações foi de 91,8%, sendo as principais tecido de granulação (81%), efusão (58%) e retração da membrana timpânica (35%). Não houve diferença na prevalência de alterações significativas na orelha contralateral entre os gêneros, crianças e adultos, imunossuprimidos ou não e com ou sem colesteatoma na pior orelha. Houve correlação da extensão do tecido de granulação (rS=0,345, P=0,004) e do colesteatoma (rS=0,617, P<0,0001) entre as orelhas. Conclusão: Podemos observar alta prevalência de alterações orelha contralateral. A correlação entre a extensão tanto do tecido de granulação quanto do colesteatoma entre os dois lados, sugere, corroborando a hipótese do continnuum, que as alterações constitucionais do indivíduo podem estar implicadas na cascada de eventos que leva à cronificação e que isto pode ocorrer bilateralmente.Objective: To determine the prevalence of contra lateral middle ear cleft pathologic findings in human temporal bones with chronic otitis media. Study design: Transversal Material and Methods: The humam temporal bones was analised under optical microscopy. Chronic otites media was definied by the presence of irreversible inflammatory alterations in the middle ear cleft. The contralateral ear was defined as the normal or the less alterated one. The histopathologic alterations were described and classified in a crescent severity order. To compare the quantitative variables it was used the Chi square test and for correlations it was used Sperman coefficient (P≤0.05) Results: It has been studied 85 pairs of temporal bones. 22.4% had cholesteatoma in the most damaged ear. The prevalence of contra lateral ears with alterations was 91.8%. The main alterations were granulation tissue (81%), effusion (58%) and tympanic membrane retractions (35%). There was not difference between the genders, adults and children, imunossupressed or not, with or without cholesteatoma. There was a direct correlation between the both ears in relation to granulation tissue (rS=0.345, P=0.004) or cholesteatoma extension (rs=0.617, P<0.001). Conclusion: We can observe a high prevalence of contralateral ears alterations and the granulation tissue was the most frequent. The correlation between the ears about the granulation tissue and cholesteatoma extension suggest, in agreement with the continuum, that the individual constitutional alterations are involved in the sequential events that go to cronification.
30
Aspin, R. "Visual, spatial and temporal quality in video-based reconstruction of people : achieving, prototyping and evaluating." Thesis, University of Salford, 2014. http://usir.salford.ac.uk/31980/.
Анотація:
Capturing, recreating and representing a high fidelity virtual representation of the dynamic human form has long been a target for a diverse range of applications including tele-presence, games, film and TV special effects. The complexity of the challenge, to achieve a lifelike, faithful and believable representation, is such that a wide range of techniques and approaches have been developed. These are both due to research lead curiosity and requirements to address specific objective for particular problems. This work starts from a novel standpoint: that the processes of surfacing, tessellation and texturing, commonly used in 3D reconstruction, are computationally expensive and un-necessary. This work argues that by integrating the reconstruction and rendering processes into a single process that is aligned with the architecture of modern graphics hardware, a lightweight component solution can be achieved that is suitable for application on the end user systems within the many application domains. In order to achieve this aim the research undertaken seeks to both define an appropriate technique and develop detailed understanding of the reconstruction process pipeline and impacting factors. This is achieved through a complementary investigation of the tools and frameworks that are necessary to support iterative development of the approach with reliable, repeatable objective assessment. This reasons that by understanding the nature of the capture, reconstruction and presentation pipeline and by objective evaluation of the emerging reconstruction techniques this research will define an approach for 3D video based reconstruction that effectively utilises the processing potential of a single system to deliver acceptable levels of performance (speed) and fidelity (visual quality) for a componentised, multi-purpose 3D reconstruction and rendering solution. This thesis describes the research that has driven the evolution of technique and documents the iterations made. It presents a novel framework for experimentation and evaluation of the techniques and demonstrates how the use of these tools has enabled both rapid prototyping of approach and objective evaluation of improvement. The work concludes with a review of the approach taken and identifies approaches for evaluation of performance (speed) and fidelity (visual quality) that enable both repeatable experimentation within the research pipeline and reliable comparison of the end-to-end process against other techniques.
31
Karre, Ross Patrick. "The media frame the theory and practice of integrating a variety of production protocol in modern experimental temporal art /." Diss., [La Jolla, Calif.] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3369521.
Анотація:
Thesis (D.M.A.)--University of California, San Diego, 2009.Title from 1st page of PDF file (viewed Sept. 16, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references: P. 45-46.
32
Thompson, Jonathan Allen. "Discourse structure and temporal patterning : the case of French rugby commentary in the media of television and radio." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603423.
Анотація:
The issue of temporal patterning and its relationship with discourse structure has received considerable attention within recent research on tense and aspect. Most analyses of spoken data involve 'narratives' of various types, while work on written texts has explored literary narrative as well as different types of journalistic text. With specific reference to sports journalism, a small of amount of corpus-based research has been carried out on macrostructural features and tense usage in journalistic sports reports. By contrast, there are very few linguistic analyses of spoken sports commentaries, although the literature on tense and aspect generally views live sports commentary as prototypical 'Current Report' and contains many anecdotal comments regarding the dominance of the present tense. Based on a transcribed and encoded corpus of television and radio rugby commentaries, and drawing on the vast body of work on tense and aspect in discourse, this thesis analyses the macro-structure of spoken sports commentary and proposes a framework that can capture the key global features of the discourse. It examines the temporal patterns attested and explores the link between macro-structure and temporal patterning. The investigation of temporal patterning focuses on tense usage (particularly of the present tense), but also expands into broader questions prevalent in current research around temporal cohesion, such as the role of temporal connectors, as well as the functions of distinctive elements of sports commentary such as temporal reminders. The discussion includes a detailed analysis of the temporal features of 'Current Report' sections of sports commentaries and proposes that 'Current Report' can be considered a discourse mode. with distinctive temporal properties. Finally, the thesis analyses the differences between radio, television and written sports commentaries, arguing that both oral media share a set of distinctive linguistic features which are very different from those of written sports reports.
33
Lapertosa, Claudia Zanforlin. "Teste de detecção de intervalos aleatórios de silêncio em crianças com história de otite média recorrente." Pontifícia Universidade Católica de São Paulo, 2006. https://tede2.pucsp.br/handle/handle/12061.
Анотація:
Made available in DSpace on 2016-04-27T18:12:15Z (GMT). No. of bitstreams: 1
ClaudiaLapertosa.pdf: 415369 bytes, checksum: 617b0c9c60175a389d041b32304c0047 (MD5)
Previous issue date: 2006-07-31Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Introduction: otitis media is an inflammatory disease of middle ear that has greater occurrence on pediatric population, being considered a helth public problem all around the world. Peripheral ans fluctuanting hearing loss may be observed and this may cause a disturbance on the complex auditory stimuli perception, including speech. This altered auditory perception may cause difficulties on sound acoustics representation and on the auditory abilities related to speech in noise recognition, auditory memory, binaural interaction and temporal processing. Objective: to investigate the temporal auditory processing throug random gap detection test in a group of children with recurrent otitis media history on the early year of life. Method: 26 children, aged from 7 of 8 years old, according to one these criteria: otological history of 3 to 4 episodes of otitis media/year on the early years of life; 3 to 4 episodes of otitis media on their first moment life; type B ou C tympanometry at the moment of audiological evaluation. All the children were submited to the following procedures pure tone audiometry, speech audiometry, acoustic immitance measurement and to randm gap detection test (RGDT). Results: data showed RGDT hreshold longer for the frequency of 1000 Hz on the group of children with a type B timpanometry; the same happens with the group that showed abnormal acoustc reflex for 1000 Hz. Averange values for RGDT threshold ere 10 ms, sd of 2,7 ms, median of 10 ms, mode of 10 ms, minimum value was 5 ms an maximum was 15 ms. Compared to Dias (2004) values, the otitis media group showed longer threshold values. Conclusion: recurrent otitis media on early life years may produce a enlargement on the detection of silent intervals threshold
Introdução: A otite média é um processo inflamatório da orelha média de grande ocorrência na população infantil, sendo considerada um problema de saúde de caráter mundial. A presença de perda auditiva periférica e flutuante observada em alguns casos de otite média pode ocasionar alteração da percepção dos estímulos auditivos complexos, inclusive a fala. Esta alteração na percepção do sinal acústico pode causar prejuízo na representação de sons e nas habilidades auditivas que envolvem o reconhecimento da fala em ambientes ruidosos, memória auditiva, interação binaural e processos temporais. Objetivo: investigar o processamento auditivo temporal através do teste de detecção de intervalos de silêncio em crianças que tiveram otite média recorrente nos primeiros anos de vida. Método: Foram selecionadas 26 crianças com idade entre 7 e 8 anos que obedeciam aos seguintes critérios: ter histórico de 3 a 4 episódios de otite média/ano nos primeiros anos de vida, ter histórico de 3 a 4 episódios no primeiro anos de vida, ou ter timpanometria do tipo B ou C no momento da avaliação. As crianças foram submetidas à audiometria tonal, logoaudiometria, medida da imitância acústica e à pesquisa do limiar de intervalo de silêncio - RGDT (Random gap detection test). Resultado: Foi observado um aumento dos limiares do RGDT na freqüência de 1000 Hz nas crianças que tinham curva tipo B na timpanometria, assim como em relação ao reflexo do músculo estapédio contralateral alterado na mesma freqüência. Não houve correlação entre os valores do limiar do RGDT e o número de episódios de otite média. Os valores de média encontrados foram de 10 ms, desvio-padrão (dp)=2,7 ms, mediana=10 ms, moda=10ms, e valor mínimo encontrado igual a 5 ms e máximo igual a 15 ms. Comparados estes resultados com os de Dias (2004) estes valores foram maiores que os encontrados em crianças sem histórico de problema de ouvido ou de aprendizagem. Conclusão: a otite média recorrente nos primeiros anos de vida pode acarretar aumento na detecção de intervalos de silêncio o que pode explicar algumas das dificuldades de discriminação de ponto e modo articulatório encontradas nestas crianças
34
Ansari, Zunaira. "Whole field, real time photorefractive holography for imaging through turbid media using sources of diverse spatial and temporal coherence." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289853.
35
Bennett, Peter D. "The representation and control of time in tangible user interfaces (designing musical instruments for the manipulation of temporal media)." Thesis, Queen's University Belfast, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.534700.
36
Zelinka, Thomas Richard. "Re-evaluating the Spatio-temporal Relationships of Habermas’s “public sphere”, Bourdieu’s “field”, and McLuhan’s “medium”: Implications for Media Theory." Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/11423.
Анотація:
The thesis is an evaluation of the influence of the long-standing hermeneutics/positivist schism on explanations of the spatio-temporal characteristics of “the public sphere”, “the field”, and “the medium”. These are the signature terms in the seminal media-related works of Habermas, Bourdieu and McLuhan - “the public sphere” in The Structural Transformation of the Public Sphere by Jurgen Habermas; “the field” in The Political Field, The Social Science Field, and the Journalistic Field and On Television by Pierre Bourdieu; and the “the medium” in Understanding Media by Marshall McLuhan. The key aim of thesis is to analyze the shaping impact of the long-standing hermeneutics/positivist schism on the methodologies employed. The thesis also considers whether the imbalances in the multidisciplinary methodologies of Habermas, Bourdieu and McLuhan brought about by this divide could have been addressed through the use of references, models and analogies from the sub-sciences of emergence and complexity theory. This evaluation includes the responses by critics and commentators to the methodologies used by Habermas, Bourdieu and McLuhan. A central argument is that the multidisciplinary methodologies of Habermas, Bourdieu and McLuhan were compromised by their tendency not to absorb science innovations, nor access new methodological ‘techniques’ – a tendency among many twentieth century academics in the humanities, according to media historian and social theorist John Durham Peters. Close reading analysis exposes the impacts of the hermeneutic/positivist schism on the methodologies of the three theorists. A further argument is that the hermeneutical tendencies present in their methodologies were brought about more by a rejection of positivism and ‘scientism’ than a conscious leaning towards hermeneutics. Habermas, Bourdieu and McLuhan some time ago created the sandbox of modern media theory. This thesis argues that the exceptional value of their media-related works will be well-served by the addition of analytical frameworks from the sub-disciplines of science such as emergence and complexity theory.
37
Persson, Mattias. "A Survey of Methods for Visualizing Spatio-temporal Data." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-168089.
Анотація:
Olika typer av data genereras kontinuerligt varje sekund och för att kunna analysera denna data måste den transformeras till någon typ av visuell representation. En vanlig typ av data är spatio-temporal data, vilket är data som existerar i både rymd och tid. Hur denna typ av data kan visualiseras har undersökts under en lång period och området är fortfarande relevant idag. Ett antal metoder har undersökts i detta arbete och en genomgående litteraturstudie har genomförts. En applikation som implementerar ett antal av dessa undersökta metoder för att visualisera klimatdata har även skapats.Different kinds of data is generated continuously every second and in order to be ableto analyze this data it has to be transformed into some kind of visual representation. Onecommon type of data is spatio-temporal data, which is data that exists in both space andtime. How to visualize this kind of data have been researched for a long time and is still avery relevant subject to expand on today. A number of approaches have been explored inthis work. An extensive literature study has also been performed and can be read in thisreport. The study has been divided into different classifications of spatio-temporal dataand the visual representations are structured by these classes.Another contribution of this thesis is a climate data application to visualize spatiotemporaldata sets of temperatures collected for several countries in the world. This applicationimplements several of the visual representations presented in the survey includedin this thesis. This resulted in a four display application, each showing a different aspect ofthe chosen data sets that consisted of climate data. The result shows how effective multiplelinked views are in order to understand different characteristics of the data.
38
Maschek, Manfred [Verfasser], Christoph [Akademischer Betreuer] Lienau, and Erich [Akademischer Betreuer] Runge. "Spatial and temporal investigation of localized electric fields in randomly arranged dielectric media / Manfred Maschek. Betreuer: Christoph Lienau ; Erich Runge." Oldenburg : BIS der Universität Oldenburg, 2014. http://d-nb.info/1058680420/34.
39
Maschek, Manfred Verfasser], Christoph [Akademischer Betreuer] [Lienau, and Erich [Akademischer Betreuer] Runge. "Spatial and temporal investigation of localized electric fields in randomly arranged dielectric media / Manfred Maschek. Betreuer: Christoph Lienau ; Erich Runge." Oldenburg : BIS der Universität Oldenburg, 2014. http://nbn-resolving.de/urn:nbn:de:gbv:715-oops-20118.
40
Hernández, Mora Felipe Luis. "Interpolación temporal de temperatura media mensual a partir de mapas trazados por expertos, mediante el modelo propuesto por Charles-Edwards." Tesis, Universidad de Chile, 2013. http://repositorio.uchile.cl/handle/2250/148090.
Анотація:
Memoria para optar al título profesional de: Ingeniero en Recursos Naturales RenovablesLa temperatura es uno de los factores que determina las características del clima y es el principal regulador del funcionamiento de los ecosistemas terrestres. Una de las principales áreas de investigación de la temperatura del aire corresponde a la generación de cartografías climáticas, las que se han llevado a cabo principalmente siguiendo dos corrientes: Mapas analógicos y Mapas desarrollados de forma automatizada. Estos últimos son considerados aproximaciones bastante cercanas a la realidad, sobre todo en condiciones topográficas complejas y ante escases de una red adecuada de estaciones meteorológicas. Sin embargo, estos demandan gran cantidad de tiempo y conocimiento, sin mencionar la necesidad de un experto. Una alternativa sería utilizar el modelo propuesto por Charles-Edwards para interpolar la variable temperatura media mensual para todo un año a partir de cartografías analógicas de los meses extremos, sin embargo, es necesario determinar si el modelo propuesto por Charles-Edwards es capaz de preservar el comportamiento espacio temporal inferido por el experto. Para este fin se calcularon los mapas de temperatura media mensual para un año utilizando el método mencionado anteriormente. Posteriormente, estos mapas fueron sometidos a análisis cuantitativos y cualitativos para determinar el grado de concordancia con los mapas trazados por el experto. De estos análisis se pudo observar que el modelo propuesto por Charles-Edwards conserva el patrón de distribución inferido por el experto, sobre todo en los meses de enero y julio. Sin embargo, en cuanto a la estimación del valor de la variable se encontraron diferencias considerables entre ambos métodos, atribuibles principalmente a la influencia de la amplitud térmica en el modelo propuesto por Charles-Edwards. Finalmente, se puede concluir que el modelo preserva la distribución espacial de la variable inferida por el experto principalmente debido a que esta es incorporada en la interpolación mediante la utilización de los mapas de los meses extremos como insumo en el cálculo de la temperatura media mensual, además se concluye que debido a que, en cuanto al comportamiento espacio-temporal de la variable, el modelo presentó resultados satisfactorios, la posibilidad de utilizarlo como interpolador temporal a partir del trazado experto de los meses extremos en zonas con baja densidad de estaciones meteorológicas es cierta, siempre y cuando se realicen ajustes que disminuyan el error en la estimación del valor de la variable.
Temperature is one of the factors that determines the characteristics of the climate and is the primary regulator of the functioning of terrestrial ecosystems. One of the main research areas of air temperature corresponds to the generation of weather maps, which were carried out mainly along two streams: Maps and Maps analogue developed automated. The latter are considered fairly close approximations to reality, especially in complex topography and to shortage of an adequate network of weather stations. However, these are very demanding of time and knowledge, not to mention the need for an expert. An alternative would be to use the model proposed by Charles-Edwards to interpolate the variable average monthly temperature for an entire year from analogue maps of extreme months, however it is necessary to determine whether the model proposed by CharlesEdwards is able to preserve the spatiotemporal behavior inferred by the expert. For this purpose maps were calculated mean monthly temperature for one year using the above method. Subsequently, these maps were subjected to quantitative and qualitative analysis to determine the level of agreement with the maps drawn by the expert. From these analyzes it was observed that the model proposed by Charles-Edwards retains the distribution pattern inferred by the expert, especially in the months of January and July. However, regarding the estimation of the value of the variable, significant differences were found between the two methods, mainly attributable to the influence of the temperature range in the model proposed by Charles-Edwards. Finally, it can be concluded that the model preserves the spatial distribution of the variable inferred by the expert mainly because this is incorporated in the interpolation by using the maps as input ends months calculating the mean monthly temperature. It also concludes that because, in terms of space-time behavior of the variable, the model showed good results, the possibility as a temporal interpolator expert drawn from the extreme months in areas with low density of meteorological stations is some as long as adjustments are made to reduce the error in estimating the value of the variable.
41
Souza, Luciano Daniel de [UNESP]. "Autoridade e poder: os limites do poder temporal e espiri- tual no século XIV, segundo o pensamento de Guilherme de Ockham." Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/93416.
Анотація:
Made available in DSpace on 2014-06-11T19:26:38Z (GMT). No. of bitstreams: 0
Previous issue date: 2007-02-07Bitstream added on 2014-06-13T20:15:21Z : No. of bitstreams: 1
souza_ld_me_assis.pdf: 728346 bytes, checksum: 17357721b1c7e1153830b574a21d0ca5 (MD5)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A dissertação tem como objetivo compreender a teoria política medieval no século XIV, tendo como referencial as obras sobre o tema elaboradas pelo franciscano Guilherme de Ockham (1280?-1349). A abordagem feita por nós da política medieval do século XIV concentrou-se na pesquisa sobre a relação entre o poder espiritual (Igreja) e o poder temporal (Reino), visando entender qual era a posição de Ockham diante da discussão da plenitudo potestatis. Analisamos como o franciscano interpretou os argumentos, os termos e os textos que eram utilizados para provar a proeminência do poder espiritual sobre o poder temporal. Para ele, competia à teologia, em primeiro lugar, sondar que tipo de poder deviam exercer os sacerdotes dentro da sociedade cristã. Procuramos compreender o motivo que levou Ockham a colocar a questão da pobreza evangélica das ordens mendicantes, especialmente a posição defendida pelos franciscanos entre os temas políticos. Nas discussões sobre o poder temporal e espiritual, Ockham defendeu posições que o aproximam de outros teólogos do século XIV e de teorias mais antigas. Porém, sua posição política possui elementos de originalidade que reintroduzem os princípios teológico- cristãos no centro das discussões sobre o poder.
This dissertation has as objective to comprehend the medieval political theory in the fourteenth century regarding to the work about this theme done by the Franciscan William of Ockham (1280?.1349). In the approach that we made about the medieval politics of the fourteenth century, we focused our research in the relation between the spiritual power (Church) and the temporal power (Kingdon) aiming to understand which was the Ockham.s position referring to the discussion of plenitudo postestatis. We analyzed how the Franciscan interpreted these arguments, term and texts which were used to prove the superiority of the spiritual power over the temporal power. He believed it was the theology role to tell what sort of power the clergyman should exert n the Christian society. We try to comprehend the reason that took Ockham to insert the evangelical poverty in the beggar orders, especially in the view of the Franciscan. In the discussions about the spiritual and the temporal power, Ockham supported the opinions which approach from others fourteenth century theologian and more ancient theories. Nevertheless his position has original elements which reintroduce the theological-christian principles in the center of the discussion about the power.
42
Wu, Huahui. "ARMOR - adjusting repair and media scaling with operations research for streaming video." Link to electronic dissertation, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-050406-144021/.
Анотація:
Dissertation (Ph.D.)--Worcester Polytechnic Institute.Keywords: Streaming MPEG, User Study, Video Quality, Forward Error Correction, Temporal Scaling, Quality Scaling. Includes bibliographical references (p.186-198).
43
Forsrup, Ben. "Designing podcast listening history visualizations on mobile screens : A design study investigating visual representations of temporal data." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280840.
Анотація:
As listening to podcasts have increased in most western countries, podcast applications need to become more exciting both content-wise, functionally, and visually as well as contain original features, to differentiate them-selves from the competition. One such feature is data visualization, which is in this study argued to deliver additional value for users. This design study investigated the possibility of visually representing personal listening history from podcasts into a mobile application through focusing on the following question: How can visualization of podcast listening history give additional value to the user-experience on a mobile screen? Research on visualization of temporal data and user experience was used as the foundational theory, with additional information from state-of-the-art products. Using a variant of the design process, described in Design Study Methodology, a final design was developed iteratively, with focus groups and usability tests. After designing and implementing a proposed solution, usability tests were conducted remotely, using videos of a hi-fidelity prototype. Concluding the research, one finding is that a successful data visualization of podcast listening history on mobile screens should include only meaningful animations and interactions and separation between visual elements and filtering options. To fully understand the best implementation strategy, more refined and expansive studies are required, with more test participants. User tests in this study were limited due to the Covid-19 outbreak.Då podcastlyssnandet har ökat i västvärlden behöver podcastmobilapplikationer differentiera sig mot konkurrensen genom att erbjuda ett spännande utbud av podcasts och unika funktionaliteter. I denna studie anses visualisering vara en sådan funktionalitet. Visualisering anses även kunna bidra med ytterligare uppskattning för användaren. Denna designstudie ämnar studera den visuella representationen av lyssningshistorik från podcasts i en mobilapplikation, genom att besvara följande forskningsfråga: Hur kan visualisering av lyssningshistorik från podcasts ge ytterligare värde för användarupplevelsen i en mobilapplikation? Den grundläggande teorin bakom studien består av tidigare forskning om visualisering av tidsrelaterade data samt information från moderna digitala produkter från relevanta ämnen. En slutgiltig design togs iterativt fram med hjälp av en variant av metodiken från Design Study Methodology, som bestod utav fokusgrupper och användarstudier, bland annat. Efter design och implementation av en prototyp undersöktes den med användarstudier. Dessa var gjorda på distans med hjälp utav videoklipp av olika funktionaliteter i prototypen. Resultat från studien visar på att en lyckad datavisualisering av lyssningshistorik från podcasts i mobilapplikationer bör endast inkludera meningsfulla animationer och interaktioner, samt bör man separera visuella komponenter med filtreringsalternativ. En mer expansiv och noga planerad studie med fler testdeltagare behövs för att säkerställa den bästa strategin för en lyckad implementering av de föreslagna visuella metoder som ingick i prototypen. Användarstudien som genomfördes begränsades av Covid-19 pandemin.
44
Biswas, Avidipto. "CORROSION PROTECTION OF COPPER IN OILY MEDIA: MICROSCOPIC MECHANISMS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1364487333.
45
Wiegand, Kerstin. "A model of the spatio-temporal population dynamics of Acacia raddiana /." Leipzig ; Halle : UFZ, 1999. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=008589215&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
46
Croënne, C., J. O. Vasseur, Matar O. Bou, M. F. Ponge, P. A. Deymier, A. C. Hladky-Hennion, and B. Dubus. "Brillouin scattering-like effect and non-reciprocal propagation of elastic waves due to spatio-temporal modulation of electrical boundary conditions in piezoelectric media." AMER INST PHYSICS, 2017. http://hdl.handle.net/10150/623049.
Анотація:
The properties of a one-dimensional phononic crystal made of identical piezoelectric elements separated by thin metallic electrodes connected to the ground are studied theoretically for cases where the locations of the electrical connections change as a function of time with a specific speed. This spatio-temporal modulation of the electrical boundary conditions results in significant non-linear effects that are evidenced numerically. The interaction between an incident harmonic longitudinal wave and the time-dependent phononic crystal is shown to lead to frequency splitting analogous to Brillouin scattering. Moreover, the boundaries of the Bragg bandgaps are strongly affected, and for some specific modulation speed, one-way wave propagation can be achieved. Published by AIP Publishing.
47
Knoell, Tiffany L. ""So You Want To Be A Retronaut?": History and Temporal Tourism." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1587590767297251.
48
ANDERSEN, PETER KAERGAARD. "PASSEGGIATE A MARE ~ PATHWAYS OF THE SEA, TEMPORAL AND POETIC ENTANGLEMENT OF COASTAL LANDSCAPES." Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1090109.
Анотація:
Pathways of the Sea is about thinking and making with water in the encounter
of the coastal mediterranean landscape in Liguria and its multiple non-human and
human agencies and interweavings. The thesis is placed at the crossroads between
heritage, new media technologies, creativity, aesthetics, memory, time and
environment. At the core is a series of artworks in different media: film, installation
and textiles. Poetic and temporal entanglements that hold together differential
perspectives and multispecies becoming in the sensuous capture of landscapes.
The works find companionship with prehistoric molluscs, plants in lost landscapes,
nocturnal moths and moonlight. Wandering through and weaving together archives,
cosmicomic literature, marine biology, naturalist collections, paleolithic graves,
Victorian travel writings, science stories, abandoned swimming pools, industrial
ruins and much more. In doing this, the project turns to modes of worlding the
world through multiple differences inherent in various theoretical perspectives of
feminist, posthumanist, environmental and new materialist studies. In particular, the
project finds solace in water and sea as planes for thinking time, species and matter
as more-than-human inheritances and thinking media practice as an apparatus of
making difference. Pathways of the Sea is performative enactments of heritage
landscapes. Portraying temporal criss-crossings and unfolding narratives where
diverse human and non-human life and time spheres bend into and through each
other. In these acts of landscape entanglement, the thesis opens up a discussion of
how to think heritage as a naturecultural remembrance, a futuring that affirmatively
trouble who we are and what we are to come.
49
Torres, Norambuena Boris Antonio. "Diseño de un protocolo MAC con una multiplexión temporal eficiente para redes inalámbricas locales energéticamente autosustentables equipados con dispositivos captadores de energía." Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/143669.
Анотація:
Magíster en Ciencias de la Ingeniería, Mención Eléctrica.
Ingeniero Civil EléctricoEn la actualidad existe un crecimiento acelerado en el número de dispositivos que utilizan la red para comunicarse, sumado a que la de manda por velocidades de transmisión más altas ha aumentado. Conjuntamente con este requerimiento, existe una exigencia tácita: dispositivos más autónomos, es decir, dispositivos que tengan baterías lo suficientemente eficiente para no tener que cargarlos frecuentemente. Esto ha creado la necesidad de contar con protocolos que utilicen eficientemente el ancho de banda disponible de Internet, además de que sean considerados con la batería de los equipos. Una de las soluciones que se han planteado es la de utilizar frecuencias más elevadas de comunicación, llegando en la actualidad a transmitir a frecuencias de decenas de Gigahertz. Una banda que tiene especial interés, es la banda de 60 Ghz (58 -61 GHz), pues es una banda no licenciada y provee una alta tasa de transmisión de datos. Esta tesis presenta un protocolo Media Access Control (MAC), orientado a las ondas milimétricas (ondas que trabajan a frecuencias entre 30 y 300 GHz), que mejora el desempeño del protocolo Process-Stacking Multiplexing Access (PSMA) y adaptarlo a una red centralizada. Aquí se propone el protocolo Variable Slot Time-Time Division Multiple Access (VST-TDMA). Este usa de forma más eficiente el ancho de banda pues no desperdicia tiempo, como si ocurre en Multiplexación por División de Tiempo (TDMA, Time Division Multiple Access). Además, es energéticamente eficiente y autosustentable, pues variará su tasa de transmisión dependiendo del estado de carga (SOC, State of Charge) de la batería del dispositivo. Para diseñar este, se mantuvo el funcionamiento general del protocolo PSMA, cuya idea central es la de agendar procesos, reservando el uso de canal a medida que los equipos que integran la red soliciten usarla, asignando a cada uno de ellos el tiempo exacto que requieran de utilización del canal. No obstante, el principal cambio que se añade es que la Estación Base (BS, Base Station) envía cíclicamente un broadcast, para para incorporar y/o sincronizar cualquier dispositivo que requiera acceder la red, o si la BS necesita enviar datos a alguno de los nodos. Seguidamente, se describirá el algoritmo que se usó para la estimación de los parámetros que condicionan el comportamiento de la batería. El principal resultado de VST-TDMA, es lo relacionado con la batería. En términos de desempeño en transferencia de datos, tiene un resultado similar a PSMA. No obstante, en lo relacionado a la energía, se puede notar que la información que se puede obtener de la batería permite que el protocolo decida en qué momento debe bajar su tasa de transferencia, para no degradarla, y de esta forma tenga mayor vida útil. Además, se llegó al hecho que el parámetro que condiciona principalmente a la batería es el parámetro α, logrando errores bajos en el caso de ser estimado con precisión. Como trabajo futuro, para empezar, se propone el implementar completamente el protocolo en Opnet, tanto desde el punto de vista de funcionamiento, como de la estimación de los parámetros que modelan la batería. De esta forma, será posible conocer el comportamiento más completo del protocolo. Finalmente, se podría implementar este protocolo con algún medio físico, y a las frecuencias a la cual fue diseñado. Se podría utilizar field-programmable gate array (FPGA), dónde se programaría el protocolo y se podría observar el comportamiento en un ambiente real.
50
Jayawardhana, Udaya Kumara. "An ontology-based framework for formulating spatio-temporal influenza (flu) outbreaks from twitter." Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1465941275.