To see the other types of publications on this topic, follow the link: Temporal architecture.
Dissertations / Theses on the topic 'Temporal architecture'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Temporal architecture.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Field, Luke V. "The Temporal Dimension of Architecture." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1236114237.
Full text
2
Sun, Xiaohua 1972. "A study of temporal visual composition." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42975.
Full textAbstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Architecture, 2007.Includes bibliographical references (p. 175-182).
With the rapid growth of digital art, the temporal dimension is becoming a more and more important aspect of visual creations. This thesis is an effort to contribute to the construction of a disciplined basis for the composition of visual creations along the temporal dimension. It studies new perceptual phenomena and compositional issues introduced by temporal visual composition; it proposes and develops a set theory-based composition approach; it also presents the applications of this approach in compositional experiments at different levels of abstraction. As another aspect of contributing to the temporal visual composition research, this thesis designs and develops a temporal visual composition interface and a system for color generation and manipulation based on spectral information. This interface and system serve as an indispensable support for the composition experiments in this study. They also present to artists a new level of control over both graphical materials and the composition process. Furthermore, they suggest new creative potentials in temporal art.
by Xiaohua Sun.
Ph.D.
3
Buc, Calderon Cristian. "Temporal dynamics and neural architecture of action selection." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/229408.
Full textAbstract:
In this thesis we pitted two views of action selection. On the one hand, a traditional view suggesting that action selection emerges from a sequential process whereby perception, cognition and action proceed serially and are subtended by distinct brain areas. On the other hand, an ecological view (formalized in the affordance competition hypothesis) advocating that action selection stems from the parallel implementation of potential action plans. In parallel, the competition between these action plans would be biased by relevant task factors. We first addressed the issue of the temporal dynamics of action selection processes in Chapter 2. We built a reaching task design that crucially gave equal opportunities for serial and parallel processing of cognitive and motor processes to occur. In our study, we first cued participants with probabilities associated to upcoming potential reaches. After several hundreds of milliseconds, participants were given a deterministic go signal indicating which target to reach for. They had to reach for the signaled target as fast as possible. Importantly, our design tries to cope with the biases involved in previous reaching tasks, allowing for a much more informative way to tackle the issue of serial versus parallel processing in action selection. We show that effects of action probability are not only present in the initiation time (i.e. the time it takes to initiate the movement), but crucially also in the movement time (i.e. the time interval between movement initiation and target reaching). Furthermore, an analysis of the movement trajectories showed that reach probability influenced the trajectories according to the predicted pattern. Thus, these results back up a system where cognitive and motor processes continuously interact with one another to come up with a decision. After clarifying the temporal dynamics, we concentrate our efforts on exposing the neural architecture of processes subtending action selection in Chapter 3. In a two-choice button press task, participants were first cued with predictive information regarding upcoming button presses. Crucially, we experimentally manipulated the amount of information in favor of specific button presses whilst adopting a design as similar as possible to those used in monkey neurophysiology (e.g. Cisek & Kalaska, 2005). Using fMRI, our results showed that as information in favor a button press increases, so does activity in the contralateral primary motor cortex, while activity in the ipsilateral primary motor cortex decreases. Moreover, we observed that primary motor regions are more tightly coupled with fronto-parietal areas in a condition involving a decision compared with a situation not implicating a decision between two button presses. Our results are compatible with an account predicting that decision-making emerges from motor areas, and therefore suggest that the architecture presented in the affordance competition hypothesis is not only valid in monkeys but also humans. In Chapter 4, we combine the findings acquired in the studies of chapter 2 and 3 with recent neurophysiological insights to develop a neuro-computational model capable of grasping the continuous interaction between cognitive and motor processes, responsible for the behavioral pattern in reach selection tasks. Our model functions on the principles of cascade forward models whereby activation at one stage of processing systematically spills to the next one, thereby substantially blurring the boundaries between perceptive, cognitive and motor processes. Contrary to most computational models confining action selection processes prior to action execution, our model allows for these processes to leak into action execution. Moreover, the threshold for action execution is not fixed, but rather dynamic and crucially depends on the activity pattern of the model’s primary motor neurons. We propose that the modification of the threshold is governed by the subthalamic nucleus, receiving direct input signals from the primary motor cortex and in turn imposing a dynamical brake on action execution. By including this dynamical threshold, our model has the advantage that it can release movement execution either rapidly or slowly depending on the context. Our model accounts not only for initiation times, but also movement times in reaching task studies. Furthermore, it can grasp the qualitative pattern of movement trajectories. This study suggests that to explain unfolding actions a classical fixed threshold is not sufficient, but rather an execution threshold level that is continuously being updated depending on the context is required.Doctorat en Sciences psychologiques et de l'éducation
info:eu-repo/semantics/nonPublished
4
Hanks, Travis W. (Travis Wesley). "Cineplastic : temporal paradox in the movement-image medium." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35504.
Full textAbstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2006.Includes bibliographical references (leaves 76-78).
It could be argued that the term 'digital' as a prefix to architecture is evidence that contemporary design practice is lost in time. Modernity's predilection of spatial constructs over temporal ones continues to cast a lingering epistemological shadow regarding a theory of event in design processes. The impossibility of 'empirical data' as given and fixed in design 'strategies' is further complicated by the contingency of forms developing in time. Design intuition must be more than simply the ability to 'choose' from an auto-generated taxonomy of pre-rationalized forms. 'Framing' as the re-assertion of subjectivity within the 'automatic' processes of photography and film has yet to find a substantive architectural equivalent which allows intuition to intrude, interrupt, contaminate, and guide processes throughout. Captivated in a mode of production characterized by a continuous unfolding of fluid form, architects look for a way out of time. Yet, perhaps the simultaneity of parallel duration cannot (and should not?), be completely reconciled with the discreet and serial computational model.
by Travis W. Hanks.
S.M.
5
Manning, Kayla (Kayla C. ). "Temporal playscape design within an existing landscape dynamic." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/65741.
Full textAbstract:
Thesis (S.B. in Art and Design)--Massachusetts Institute of Technology, Dept. of Architecture, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 37).
Designing within the landscape, architects are often challenged with the dilemma of what to build and to what extent if anything. The natural environment offers an architecture of its own parameters and rules. Building within those established parameters, architects must inform their design accordingly and responsibly. Taking cues from natural environmental processes, the design for a contemporary playscape within existing environmental conditions provides a refuge from city life for Boston area children. The design balances between the designed landscape and the natural landscape. Natural processes over time erode the playscape away so that the transformation is perceived by the children who return regularly to the site. Considerations of natural soil behavior, water drainage patterns, soil erosion, and plant invasion are instrumented into the final articulation of the playscape.
by Kayla Manning.
S.B.in Art and Design
6
Wood, Michael. "Valuing vacancies : Temporal productive revitalisation of neglected land." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/23774.
Full textAbstract:
Neglected or underutilised spaces in cities have never been as important as they are today as land is consumed by rapid urbanisation. Landscape architects have been transforming these sites into public places, an example being the repurposing of a disused rai l line to create the High Line in New York, testimony to the inherit opportunity that brownfield sites possess. However, these projects require a significant capital injection making them unsuitable for the South African context. This presents an opportunity for an alternative landscape revitalisation model. This project will endeavour to create a new landscape architectural model to utilise temporary vacant sites within the urban realm- sites with high land value. This model is based around productive landscapes for growing food and has the potential to address some key challenges that cities face, including but not limited to recreational deficits, limited job opportunities and limited education regarding the production of food. The project draws inspiration from the unrestrained beauty of the weedscapes that have colonised derelict sites within the foreshore for the past 79 years and been responsible for the transformation of dredged beach sand into fertile soils, rich in opportunity for temporal productivity. The currently vacant site is located within the reclaimed foreshore of Cape Town's CBD and will act as a pilot site for further initiatives within the city. The abundance of vacant land parcels adjacent to the Port of Cape Town has the ability to provide temporary productive landscapes and initiate new pedestrian linkages to the Waterfront precinct. The project utilises a methodology that begins with detailed transects showing existing relationships between plant communities and the material and soils of the derelict site. It additionally uses the inherit seasonal aesthetic potential that weeds possess, merging it with productive planting compositions· a methodology utilised by Piet Oudolf.
7
Kent, Michael G. "Temporal effects in glare response." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/35450/.
Full textAbstract:
Discomfort glare is considered to be an annoyance or distraction caused by sources of non-uniform or high luminance within the field of view of an observer. There are still significant gaps in our understanding of the conditions that characterise the magnitude and occurrence of discomfort glare, this being especially evident in the presence of large sources of luminance such as windows. The large degree of scatter that is observed when subjective evaluations of glare sensation are compared against calculated glare indices suggests that discomfort glare may be dependent on other variables beyond the physical and photometric parameters that are commonly embedded in glare formulae (e.g., source luminance, source size, background luminance, and position index). There are strong reasons to believe that some of these variables might be linked to the time of day when the observer is exposed to the glare source. In response, this thesis investigated the research hypothesis that subjective glare sensation is associated with temporal variability. This hypothesis was tested in two stages. The first stage was conducted within a laboratory setting, and sought to examine temporal effects under controlled artificial lighting conditions. The collection of temporal variables and personal factors – thereby examining the scatter in glare responses across the independent variable (time of day) and isolating potential confounding variables – enabled to identify factors that could influence the subjective evaluation of glare sensation along the day. Having established the presence of a temporal effect on glare response, the influences detected were further explored within a test room with direct access to daylight, whereby temporal variables and personal factors were measured in conjunction to glare sensation for them to be statistically masked from the analysis. The results confirmed the hypothesis of an increased tolerance to glare as the day progresses. This supported the conclusion that physical and photometric parameters alone are not sufficient for a robust prediction of discomfort glare.
8
Talma, Mark R. "The Identity of Temporal Space: Spatial Manifestation of Carnival." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337717398.
Full text
9
Liu, Fang 1962. "Modeling spatial and temporal textures." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/29131.
Full text
10
ZHOU, XI, and YAOYAO LUO. "Implementation of Hierarchical Temporal Memory on a Many-core Architecture." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-21597.
Full textAbstract:
This thesis makes use of a many-core architecture developed by the Adapteva Company toimplement a parallel version of the Hierarchical Temporal Memory Cortical LearningAlgorithm (HTM CLA). The HTM algorithm is a new machine learning model which ispromising in the aspect of pattern recognition and inference. Due to its complexity,sufficiently large simulations are time-consuming to perform on sequential processor,therefore, in this thesis we have investigated the feasibility of using many-core processors torun HTM simulations.In this thesis, a parallel implementation of the HTM algorithm on the proposed many-coreplatform has been done in C. In order to evaluate the performance of parallel implementation,some metrics such as speedup, efficiency and scalability have been measured throughperforming some simple pattern recognition tasks. Implementing the HTM algorithm on asingle-core computer established the baseline to calculate the speedup and efficiency ofparallel implementation for the purpose of evaluating scalability.In this thesis, three mapping methods which are block-based, column-based and row-based,have been selected to parallelize the HTM from many mapping methods. In the experimentwith small training examples, the row-based mapping method gained the best performancewith a high speedup because of the lesser influence of training example variability, andreflected a good scalability when implemented on different numbers of cores. However, theexperiment with a relatively large amount of training examples gives almost identical resultsfrom all three mapping methods. In contrast with the small experiment, the full set experimentused much more diverse input and the mapping method did not influence the average runningtime for this training set. All three mappings have showed almost perfect scalability and thereis linear speedup increasing with number of cores, for the dataset and HTM size used.
11
Labadie, Marc. "Deciphering spatio-temporal development of strawberry plant." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0871/document.
Full textAbstract:
Chez le fraisier la balance entre floraison et développement végétatif incluant la production de stolons (tiges allongées portant les plants filles) conditionne le rendement du plant. L’objectif de la thèse était d’obtenir une meilleure compréhension des processus de développement du fraisier, la floraison, le développement végétatif des axes et le stolonnage, grâce à une étude spatio-temporelle. Trois approches complémentaires ont été développées sur six variétés non-remontantes plantées en conditions « hors sol » : (1) la modélisation des profils d’émergence hebdomadaire de fleurs, feuilles et stolons par une analyse de segmentation longitudinale, (2) l’analyse spatio-temporelle de l’architecture des plants durant une saison de production et (3) le suivi de l’expression de gènes clés liés à la floraison. (1) Les modèles univariés de détection de ruptures appliqués à chaque variable phénologique étaient basés sur l’hypothèse que les changements de phases sont synchrones entre les individus d’une même variété. Ces modèles ont permis d’identifier des phases pour chacune des variétés et chacun des trois types d’organe. Les modèles de détection de ruptures multivariés combinant les trois types d’organes ont permis de mettre en évidence une forte structuration du développement du fraisier par la floraison et le stolonnage. De plus, les variétés se regroupent autour de deux profils de floraison avec la présence ou pas d’un deuxième pic de floraison. Enfin, les modèles d’émergence de stolon montrent un synchronisme suggérant un fort effet environnemental. (2) L’analyse spatio-temporelle de l’architecture s’est basée sur un modèle de graphe arborescent multi-échelle, permettant une représentation visuelle et une analyse de la topologie du plant au cours de son développement. Cette analyse a permis de mettre en évidence des différences topologiques précoces ainsi que différentes stratégies de développement entre les variétés. Ces différences de développement expliquent en partie les différents profils de floraison. (3) Parmi les gènes étudiés pour leur expression au cours de la culture des plants de fraisier, SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1) apparait comme un marqueur de développement végétatif et de l’émergence des stolons. Une approche architecturale a également été initiée sur le fraisier diploïde. Les premiers résultats ont permis de mieux préciser le devenir des méristèmes axillaires. En conclusion, ce travail a permis d’évaluer les variétés en condition de production et d’identifier des critères de sélection pour le développement de nouvelles variétés. Il a également permis de développer de nouveaux outils qui pourront être utilisés par les sélectionneurs et les expérimentateursIn strawberry, the balance between flowering and vegetative development, including the production of stolons (elongated stems carrying the daughter plants), conditions the yield of the plant. The objective of the thesis was to better understand the developmental processes of strawberry plant, namely flowering, the vegetative development of axes and runnering, through a spatio-temporal study. Three complementary approaches have been developed on seasonal flowering varieties planted in "soilless" conditions: (1) modeling the weekly emergence of flowers, leaves and stolons by a longitudinal segmentation analysis, (2) spatio-temporal analysis of plant architecture during a seasonal production and (3) expression of key genes related to flowering. (1) Univariate multiple change-point models applied to each phenological variable were based on the assumption that phase changes were synchronous between individuals of a given variety. These models allowed to identify phases for each variety and each type of organ. Multivariate multiple changepoint models combining the three types of organ highlighted a strong structuring of strawberry development by flowering and runnering. Moreover, the varieties can be grouped into two profiles of flowering with the presence or not of a second period of flowering. Finally, the stolon emergence models show a synchronism suggesting a strong environmental effect. (2) Spatio-temporal analysis of the architecture relied on a multi-scale tree graph allowing visual representation and topological analysis of plant development. This analysis revealed early topological differences as well as different strategies of development between varieties. These differences in development partially explain the different flowering patterns. (3) Among the genes studied for their expression during the cultivation of strawberry plants, SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1) appears as a marker of vegetative development and stolon emergence. An architectural approach was also initiated on the diploid strawberry. First results allowed to better specify the fate of axillary meristems. In conclusion, this work allowed to evaluate the varieties in production condition and to identify selection criteria for the development of new varieties. It has also allowed the development of new tools that can be used by breeders and experimenters
12
Khan, Omar 1969. "The medium is the method : modeling strategies for spatio-temporal events." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/67536.
Full textAbstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2001.Includes bibliographical references (p. 121,123).
In an increasingly networked environment, time has become synonymous with place. The amount of time allocated to an activity serves as the boundary between one space and another. So that where we once had places called home and work, now we have times that define that boundary. Within this context an architectural study of temporal events and the means of representing them is critical. What Is the architecture of a temporal event? How can one describe it, inquire into it, design for it? This thesis looks into the possibility of using the medium as a method for addressing these questions. Three mediums, the narrative, the video camera, and computation have been chosen to develop techniques for studying a dynamic phenomenon. All three have time as a distinct component of their expression. The event is "a woman watering a plant", which has a time lapse of 19 seconds. The media and their techniques were the means to represent it, study it and re-fabricate it.
by Omar Khan.
S.M.
13
Cocci, Giacomo <1983>. "Spatio-temporal models of the functional architecture of the visual cortex." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6546/.
Full textAbstract:
In this work I tried to explore many aspects of cognitive visual science, each one based on different academic fields, proposing mathematical models capable to reproduce both neuro-physiological and phenomenological results that were described in the recent literature. The structure of my thesis is mainly composed of three chapters, corresponding to the three main areas of research on which I focused my work. The results of each work put the basis for the following, and their ensemble form an homogeneous and large-scale survey on the spatio-temporal properties of the architecture of the visual cortex of mammals.
14
Smyth, Annya Mary. "Spatial, temporal and functional molecular architecture of the munc18-syntaxin interaction." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/9972.
Full textAbstract:
Regulation of soluble N-ethylmaleimide-sensitive fusion protein attachment protein receptors (SNARE) mediated exocytosis is dependent upon four key proteins; the vesicular SNARE synaptobrevin, target SNAREs SNAP-25 and syntaxin and the Sec1/Munc18 (SM) protein munc18-1. Despite the munc18-1-syntaxin interaction being central to regulated vesicle exocytosis the spatial and temporal pattern of their molecular distribution and interaction in neuroendocrine and neuronal cells remains undefined. Using in vitro and molecular approaches this thesis shows that disruption of the munc18- 1-syntaxin-N-terminal interaction results in significant changes in syntaxin localisation, membrane-proximal vesicle dynamics and fusion efficiency within neuroendocrine cells. Using the super-resolution techniques Ground State Depletion-Individual molecule return (GSDIM) Microscopy and Photoactivation Localisation Microscopy (PALM) this thesis has demonstrated that the spatial distribution of single munc18-1 molecules is non-random and that few munc18-1 molecules are required for exocytosis to proceed in neuroendocrine cells. Furthermore, targeted disruption of the N-terminal interaction resulted only in a reorganisation of interaction with syntaxin with no change in the molecular spatial pattern of secretory vesicles, syntaxin or munc18-1. Single molecule imaging PALM (sptPALM) enabled the investigation of the complex spatio-temporal behaviours of single munc18-1 molecules in living neuroendocrine cells. Spatially resolved maps of single munc18-1 molecules demonstrated that munc18-1 exhibits a caged motion within areas of the plasma membrane and were found to move between molecular storage depots distinct from vesicle docking sites. To explore the precise spatial and temporal sequence of interactions between syntaxin and munc18-1 in living neurons, super-resolution imaging techniques PALM and sptPALM were employed. Two kinetically and spatially distinct populations of munc18-1 molecules co-exist within a living neuron and munc18-1 requires syntaxin to traffic efficiently in axons but not for its retention in nerve terminals. Moreover, Fluorescence Correlation Spectroscopy (FCS) revealed that the majority of munc18-1 molecules do not interact with syntaxin in nerve terminals and the diffusion rate of syntaxin is significantly slowed down upon neuronal depolarisation.
15
Barnes, Jeffrey M. "Software Architecture Evolution." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/291.
Full textAbstract:
Many software systems eventually undergo changes to their basic architectural structure. Such changes may be prompted by new feature requests, new quality attribute requirements, changing technology, or other reasons. Whatever the causes, architecture evolution is commonplace in real-world software projects.
Today’s software architects, however, have few techniques to help them plan such evolution. In particular, they have little assistance in planning alternatives, making trade-offs among these different alternatives, or applying best practices for particular domains.
To address this, we have developed an approach for assisting architects in planning and reasoning about software architecture evolution. Our approach is based on modeling and analyzing potential evolution paths that represent different ways of evolving the system. We represent an evolution path as a sequence of transitional architectural states leading from the initial architecture to the target architecture, along with evolution operators that characterize the transitions among these states. We support analysis of evolution paths through the definition and application of constraints that express rules governing the evolution of the systemand evaluation functions that assess path quality. Finally, a set of these modeling elements may be grouped together into an evolution style that encapsulates a body of knowledge relevant to a particular domain of architecture evolution.
We evaluate this approach in three ways. First, we evaluate its applicability to real-world architecture evolution projects. This is accomplished through case studies of two very different software organizations. Second, we undertake a formal evaluation of the computational complexity of verifying evolution constraints. Finally, we evaluate the implementability of the approach based on our experiences developing prototype tools for software architecture evolution.
16
Lane, Peter. "Simple synchrony networks : a new connectionist architecture applied to natural language parsing." Thesis, University of Exeter, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322386.
Full text
17
Uchida, Mio. "Urban temporal storage : re-thinking the public domain using interstitial space in NYC." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/57979.
Full textAbstract:
Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 2010.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 84-85).
This thesis aims to rethink the notion of public space and civic duty in the city. By using interstitial, underused spaces, without disputing present urban and legal status, the thesis wants to accomodate services for the people who might otherwise be ignored in the city, while using the potential of the site itself to offset the cost of these services. Looking at a site in New York City, between Pennsylvania Station and the Hudson River, the thesis introduces diverse and temporary programs in a sequence of interstitial spaces as a tool to integrate the homeless issue in the dynamic of the city. The aim is to encourage public intervention that soften the threshold between disparate urban classes, while fulfilling several civic functions, the most important of which is to explore new, safe, and dignified designs for homeless shelters. In the process, the thesis attempts to recognize the specificity of individual dealing with time and space, which are becoming more and more homogenized in the capitalist society.
by Mio Uchida.
M.Arch.
18
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.
Full text
19
Greenlee, Jordan. "Temporal and spatial modeling of analog memristors." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41215.
Full textAbstract:
As silicon meets its performance limits, new materials and methods for advancing computing and electronics as a whole are being intensely researched, as described in Chapter 1. Memristors are a fusion of these two research areas, with new materials being pursued concurrently to development of novel architectures to take advantage of these new devices. A background of memristors and an overview of different memristive developments in the field are reviewed in Chapter 2.
Chapter 3 delves into the physical mechanisms of analog memristors. To investigate and understand the operation of analog memristors, a finite element method model has been developed.
More specifically, the devices simulated include a simple memristor simulation where the lithium ions (dopants) are confined to the device, but allowed to move in response to a voltage applied across the device. To model a more physical memristor, charge carrier mobility dependence on dopant levels was added to the device, resulting in a simulated device that operates similarly to the first simulation. Thereafter, the effect of varying geometries was modeled, and it was determined that both the speed and the resistance change of the device were improved by increasing the ratio of the top and bottom metal contact lengths in a restrictive flow geometry. Finally, the effect of dopant removal was investigated. It was determined that if the greatest change in resistance is required, then the removal of dopants is the optimal operating regime for an analog memristor.
Through a greater understanding of analog memristors developed by the simulation described herein, researchers will be able to better harness their power and implement them in bio-inspired systems and architectures.
20
Göransson, Jonas Alexander. "A TEMPORAL STABLE DISTANCE TO EDGE ANTI-ALIASING TECHNIQUE FOR GCN ARCHITECTURE." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-10456.
Full textAbstract:
Context. Aliasing artifacts are a present problem in both the game industryand the movie industry. With the GCN (Graphics Core Next) architectureused on both new generation of consoles; Xbox One and Playstation 4, aunified Anti-Aliasing solution can be constructed with high performance,temporal stable edges and satisfying visual fidelity. Objective. This thesis aims to implement several prototypes which willbe utilizing GCN architecture to solve aliasing artifacts such as temporalstability. Method. By doing performance measurements, a survey and an experimenton the constructed prototypes and current state of the art solutionsthis thesis will create both a benchmark between given state of the art solutionsfor the industry and at the same time evaluate the new solutions givenin this thesis. Result. With having potential of being the fastest Anti-Aliasing solutionin the field it does not only bring high performance, but also very temporalstable edges and satisfying visual quality. Conclusion. If not used as a standalone solution, the prototype can be decoupledfrom GCN specific features and be a very suitable complement forMulti Sample Anti-Aliasing which can not handle alpha clipped edges.
21
Anderson, Julie Renee. "Spatial and temporal distribution of domestic and civil architecture in Christian Nubia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ35429.pdf.
Full text
22
Agusintadewi, Ni Ketut. "Transforming domestic architecture : a spatio-temporal analysis of urban dwellings in Bali." Thesis, University of Newcastle upon Tyne, 2015. http://hdl.handle.net/10443/2772.
Full textAbstract:
Cultural transition is a significant phenomenon in urban dwellings in Denpasar, the capital of Bali. House values, functions, meanings, and spatial configurations are changing in parallel with the process of socio-cultural transition. Through time traditional space configurations no longer fit with the new values and lifestyles. Meanwhile, cultural transition has also occurred in low-cost housing. Many occupants are dissatisfied because traditional values of the local society are perceived as relatively unimportant by the developers. As well as cultural transition, these occupants also have to cope with physical, spatial, and social issues. Therefore, the urban Balinese who live in these houses tend to continually adapt their dwellings to meet their current situation. In a study in 2003, Sueca used quantitative and qualitative methods to analyse the characteristics of the occupants in urban dwellings. These included socio-economic issues, education, demographic factors and occupation, in order to see how they contribute to the housing transformation phenomenon. Thus, comparisons of these characteristics were used to discover contributory factors, motives of transformation, and the processes and effects of this phenomenon. The conclusions of his research were made available for further work and to serve as a starting point for this current study. Over ten years later, a valuable study of this phenomenon can be accomplished to identify and investigate change through time. Systematically revisiting the dwellings and households of the previous study is a way of understanding this phenomenon, through a detailed analysis of documents, household interviews and spatial surveys. Covering over ten years, this allows a focus on the socio-cultural changes over time and produces information and evidence about this phenomenon and how the dynamics of the socio-cultural life of the occupants order and articulate the process of housing transformation. It is necessary to identify and differentiate between the core elements and the peripheral elements of the socio-cultural lives of the occupants, which can disappear or be replaced by new, highly valued elements. In terms of data, previously accumulated information was integrated with more recently collected fieldwork data in 2011. In this sense, the approach emphasises the need for a time series perspective of home environments and the importance of historical data for theory development in Environmental-Behaviour Studies. This study ultimately provides an understanding of the interconnection between occupants and urban dwellings in the process of housing transformation from a spatio-temporal perspective. Dialectic processes describe an essential dynamism in the process of becoming at home in the socio-cultural lives of this specific group. The study also explores the importance of the socio-cultural lives of urban dwellers in helping to define the nature of the Balinese, in terms of their lifestyles, values, preferences, and the nature of good or better settings for them. Finally, it aims to contribute to supportive housing design and policies in Indonesia.
23
Wong, Yin Yin. "Temporal typography : characterization of time-varying typographic forms." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/29102.
Full text
24
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.
Full textAbstract:
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.
25
Abou, Dib Marwan Joseph. "Design for speculation : volatile, temporal, in-transit." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103455.
Full textAbstract:
Thesis: M. Arch. in Real Estate Development, Massachusetts Institute of Technology, Department of Architecture, 2016.Thesis: S.M. in Real Estate Development, Massachusetts Institute of Technology, Program in Real Estate Development in conjunction with the Center for Real Estate, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 97).
The thesis project is a reaction to the alarming rate of building and development depreciation caused by foreign investment in the Middle Eastern city of Dubai. The intervention looks at how architects, developers, and planners can counteract this phenomenon by designing for speculation in order to mitigate future crises or successes. Understanding the economic terms of "creative destruction" and "planning obsolescence" are imperative to help structure such a proposal Though such terms were attributed to industrial products such as cars and electronics, they are today applicable in the context of Dubai and similar cities worldwide. Architecture and real estate products have become victim to this capitalist phenomenon. The project is framed as an architectural reaction to the world's increasing capability to make and accumulate in conjunction with a growing desire to be transient and global. Has architecture become a mere toy product which can be changed around as it become obsolete? Rather than be destroyed, how can architecture morph and be updated into something new? Architects are not in complete control of consumer wants and needs; these, too, continue to change at a dynamic pace. I argue that a synchronized system that can reflect flexibility is integral in order to maintain equilibrium in the urban economic model today The project design is an infrastructure capable of harnessing capital inflow and outflow while withstanding volatility, temporality and a population in-transit Dubai is the core case-study and the thesis explores how such a generic system can adapt to cities such as Miami, New York City and Juba.
by Marwan Joseph Abou Dib.
M. Arch. in Real Estate Development
S.M. in Real Estate Development
26
Gary, Aaron Eugene. "Temporal and Material Layers: A Library for Pulaski, Virginia." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/33892.
Full textAbstract:
The focus of my thesis is the examination of the formal layers of a building through their material and temporal natures and the interactions of these layers. The examination of the interplay between the new and the old, the coarse and the refined, the organic and the man-made, form the boundaries of my study. Rooting my study in an existing foundry building in Pulaski, Virginia, a new public library is allowed to unfold through the interaction of concrete, steel, and wood interventions into a masonry shell.Master of Architecture
27
McKnight, Justine. "Redefining The Art Experience : From Static To Temporal Art Forms." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 1998. https://ro.ecu.edu.au/theses/1450.
Full textAbstract:
This research examines an approach to art making and viewing that questions the acceptance of the autonomous object in favour of a transient experience. It focuses specifically on work and writing from the 1960s by the American artist Robert Morris that attempted to alter the then predominant Formalist understanding of the art object as autonomous and self-referential. This investigation follows the formal and conceptual development of Morris' work (and that of associated artists Richard Serra and Rafael Ferrer) with particular focus on the shift from static objects to time-based and transient an-forms including film/video and installation. I address the influence that the shift from static to temporal forms has had on the experience of art such as opening artwork to deeper levels of metaphysical association and visceral response. This discussion also examines parallel issues that have emerged within my own work's conceptual and formal development. In relation to the investigation of these developments I shall contextualise and locate my recent arts practice.
28
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/.
Full textAbstract:
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.
29
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.
Full textAbstract:
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.
30
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.
Full textAbstract:
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.
31
Nika, Jérôme. "Guiding Human-Computer Music Improvisation : introducing Authoring and Control with Temporal Scenarios." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066141/document.
Full textAbstract:
Cette thèse propose l’introduction de scénarios temporels pour guider ou composer l’improvisation musicale homme-machine. Ce travail étudie la dialectique entre planification et réactivité dans les systèmes interactifs dédiés à l’improvisation : des systèmes informatiques pouvant générer de la musique en relation directe avec le contexte produit par une situation de concert. On cherche ici à appréhender l'improvisation pulsée et dite « idiomatique ». En s’appuyant sur l’existence d’une structure formalisée antérieure à la performance dans de nombreux répertoires improvisés (une « grille d’accords » par exemple) ces travaux proposent : un modèle d’improvisation guidée par un « scénario » introduisant des mécanismes d’anticipation ; une architecture temporelle hybride combinant anticipation et réactivité et permettant la synchronisation du rendu multimédia avec une pulsation non métronomique ; et un cadre pour composer des sessions d’improvisation idiomatique ou non à l’échelle du scénario en exploitant la généricité des modèles. Ces recherches ont été menées en interaction constante avec des musiciens experts, en intégrant pleinement ces collaborations au processus itératif de conception des modèles et architectures. Ceux-ci ont été implémentés dans le système ImproteK, utilisé à de nombreuses reprises lors de performances avec des improvisateurs. Au cours de ces collaborations, les sessions d'expérimentations ont été associées à des entretiens et séances de réécoute afin de recueillir de nombreuses appréciations formulées par les musiciens pour valider et affiner les choix technologiquesThis thesis focuses on the introduction of authoring and controls in human-computer music improvisation through the use of temporal scenarios to guide or compose interactive performances, and addresses the dialectic between planning and reactivity in interactive music systems dedicated to improvisation. An interactive system dedicated to music improvisation generates music on the fly, in relation to the musical context of a live performance. We focus here on pulsed and idiomatic music relying on a formalized and temporally structured object, for example a harmonic progression in jazz improvisation. The same way, the models and architecture we developed rely on a formal temporal structure. This thesis thus presents: a music generation model guided by a ''scenario'' introducing anticipatory behaviors; an architecture combining this anticipation with reactivity using mixed static/dynamic scheduling techniques; an audio rendering module to perform live re-injection of captured material in synchrony with a non-metronomic beat; and a framework to compose improvised interactive performances at the ''scenario'' level. This work fully integrated frequent interactions with expert musicians to the iterative design of the models and architectures. These latter are implemented in the interactive music system ImproteK that was used at various occasions during live performances with improvisers. During these collaborations, work sessions were associated to listening sessions and interviews to gather numerous judgments expressed by the musicians in order to validate and refine the scientific and technological choices
32
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.
Full text
33
McNeil, Mardi A. "Spatial and temporal evolution and internal sedimentary architecture of Holocene Halimeda bioherms; northern Great Barrier Reef." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/209916/1/Mardi_McNeil_Thesis.pdf.
Full textAbstract:
This research investigates the initiation and growth of Holocene Halimeda algal limestone build-ups in the Great Barrier Reef. Legacy sediment samples and newly acquired analytical data were combined to explain inter-reef Halimeda bioherm origins, temporal growth and development, spatial distribution, geomorphology, carbonate volume, nutrient source, and habitat significance. Halimeda bioherms are much more complex than previously thought. The project contributes a significant new understanding of the Halimeda bioherm geological and ecological system in space and time, elevating the importance of Halimeda bioherms as Holocene sedimentary archives and modern inter-reef benthic habitats.
34
Maaita, Adi Abdelhalim. "Techniques for enhancing the temporal predictability of real-time embedded systems employing a time-triggered software architecture." Thesis, University of Leicester, 2009. http://hdl.handle.net/2381/4142.
Full textAbstract:
This thesis is concerned with the design and implementation of single-processor embedded real-time systems with highly predictable behaviour and strict constraints on resource usage. The main aim of this research is to identify the sources of unpredictable behaviour in such systems – exhibited as timing jitter - when a time-triggered pre-emptive task scheduling approach is adopted, and then provide software based techniques to enhance their temporal predictability. The thesis provides a review of related previous work on predictable real-time task scheduling, as well as resource-access control methods for maintaining predictable real-time system behaviour through the prevention of priority inversion and other related problems. The design and implementation of the time-triggered hybrid (TTH), time-triggered rate-monotonic (TTRM), and time-triggered deadline-monotonic (TTDM) task schedulers is discussed in detail as they provide the most predictable behaviour within the category of pre-emptive task schedulers. For that reason, they will be used as the software platforms in the experimental part of this research. Two novel software techniques for enhancing the temporal predictability in systems utilising time-triggered schedulers are introduced. The first software technique presented is a resource-access control protocol named Timed Resource-Access Protocol (TRAP). This protocol is designed to avoid the problems of priority inversion, chained blocking and deadlocks while coercing system tasks to exhibit timing predictability that is proportional to their significance in the system. This appears in the decreasing levels of task finishing jitter as the significance of tasks in the system increases. The second technique is named Planned Pre-emption (PP). This technique is aimed at eliminating the scheduling unpredictability due to variable timer interrupt service time in time-triggered scheduling systems. The impact of this technique appears in the considerable reduction in scheduler task release jitter. Finally, the thesis is concluded by a discussion and a summary of the work presented.
35
Vosmek, Maureen Hogan. "Preserving change, changing how we reserve a temporal approach to infill architecture in an historic arts district /." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8271.
Full textAbstract:
Thesis (M.Arch.) -- University of Maryland, College Park, 2008.Thesis research directed by: School of Architecture, Planning and Preservation Architecture. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
36
Berron, David [Verfasser]. "Functional architecture of medial temporal lobe pathways and mnemonic discrimination in young and elderly adults / David Berron." Magdeburg : Universitätsbibliothek, 2017. http://d-nb.info/1141230534/34.
Full text
37
Yeung, Man-chin, and 楊文展. "A stone memorial park : a temporal quarryscape in Lei Yue Mun." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hdl.handle.net/10722/196539.
Full textAbstract:
This thesis is mainly about how we read city as whole. City is a simple word with
extremely complex information that interacts to each other. City is where we live.
Though this thesis will not be in touch with some deeper topics about city, we can
still read city in an unusual way. And this is the purpose for this thesis.published_or_final_version
Architecture
Master
Master of Landscape Architecture
38
Omar, Tariq Ali. "Une architecture mixte logicielle et matérielle pour le contrôle intelligent en temps réel." Grenoble INPG, 2006. http://www.theses.fr/2006INPG0089.
Full textAbstract:
Le Contrôle intelligente d'un système autonome dans un environnement dynamique et dangereux exige la capacité d'identifier les menaces d'échec et de planifier les réponses temps-réel qui peut assurer la sécurité et l'objectif du système autonome. Nous proposons une architecture pour le contrôle intelligent en temps-réel, appelée ORICA. Elle se compose d'un sous-système de raisonnement IA et d'un sous-système d'exécution temps-réel de réponse. Le sous-système de raisonnement modélise des caractéristiques temporelles et logiques du comportement environnemental et planifie les réponses du système. Le sous-système temps-réel, composé d'une partie logicielle et d'une partie matérielle, exécute ces réponses pour éviter l'échec du système autonome. Il donne une performance inégalée par rapport aux précédentes approches conventionnelles. Le comportement unique de l'intelligence reconfigurable est implanté dans la partie matérielle, avec un circuit logique reprogrammable (FPGA)Autonomous intelligent control system for a dynamic and dangerous environment necessitates the capacity to identify the failure threats and to plan the real-time responses that ensure safety and goal achievement by the autonomous system. We propose a real-time intelligent control architecture called ORICA. It consists of an AI reasoning subsystem and a real-time response execution subsystem. The AI reasoning subsystem models the temporal and logical characteristics of the environment and plans the system responses. The real-time subsystem, which is composed of a software section and a hardware section, executes these responses to avoid failure of the autonomous system. Its performance behavior is unparalleled by the previous classical approaches (pure hardware or pure software). The software section uses behavior switching according to the frequency of external events and a unique reconfigurable intelligence behavior has been implemented in hardware section, using a reprogrammable chip (FPGA)
39
Torres, Bustamante Cesar, and cesar torres@rmit edu au. "From map to mapping: imaging active landscapes through." RMIT University. Architecture and Design, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091029.094856.
Full textAbstract:
The research builds on and contributes to the representation in landscape, specifically the imaging of active landscapes. Current representational methodologies in landscape architecture have already defined various regimes for the mapping of landscapes. Most of these operate by portraying existing conditions that prioritize visual and formal qualities, displacing objects from their wider context and creating neutral artificialities. Although the discourse of representation has already emphasized the need for appropriate methodologies that engage more closely with the landscape, there has not been an examination and production of techniques that not only privilege the object but also encourage the imaginative conception of experiential phenomena unfolding over time. A convention such as the figure-ground plan is an idealized and dominant technique that expresses an existing condition, without references to evolution or change. This research provides additional insight into the depiction of events that develop over time by reconceptualising
40
Tacla, Saad Rodrigo. "Parallel model checking for multiprocessor architecture." Thesis, Toulouse, INSA, 2011. http://www.theses.fr/2011ISAT0028/document.
Full textAbstract:
Nous proposons de nouveaux algorithmes et de nouvelles structures de données pour la vérification formelle de systèmes réactifs finis sur architectures parallèles. Ces travaux se basent sur les techniques de vérification model checking. Notre approche cible des architectures multi-processeurs et multi-cœurs, avec mémoire partagée, qui correspondent aux générations de serveurs les plus performants disponibles actuellement.Dans ce contexte, notre objectif principal est de proposer des approches qui soient à la fois efficaces au niveau des performances, mais aussi compatibles avec les politiques de partage dynamique du travail utilisées par les algorithmes de génération d’espaces d'états en parallèle; ainsi, nous ne plaçons pas de contraintes sur la manière dont le travail ou les données sont partagés entre les processeurs.Parallèlement à la définition de nouveaux algorithmes de model checking pour machines multi-cœurs, nous nous intéressons également aux algorithmes de vérification probabiliste. Par probabiliste, nous entendons des algorithmes de model checking qui ont une forte probabilité de visiter tous les états durant la vérification d’un système. La vérification probabiliste permet des gains importants au niveau de la mémoire utilisée, en échange d’une faible probabilité de ne pas être exhaustif; il s’agit donc d’une stratégie permettant de répondre au problème de l’explosion combinatoireIn this thesis, we propose and study new algorithms and data structures for model checking finite-state, concurrent systems. We focus on techniques that target shared memory, multi-cores architectures, that are a current trend in computer architectures.In this context, we present new algorithms and data structures for exhaustive parallel model checking that are as efficient as possible, but also ``friendly'' with respect to the work-sharing policies that are used for the state space generation (e.g. a work-stealing strategy): at no point do we impose a restriction on the way work is shared among the processors. This includes both the construction of the state space as the detection of cycles in parallel, which is is one of the key points of performance for the evaluation of more complex formulas.Alongside the definition of enumerative, model checking algorithms for many-cores architectures, we also study probabilistic verification algorithms. By the term probabilistic, we mean that, during the exploration of a system, any given reachable state has a high probability of being checked by the algorithm. Probabilistic verification trades savings at the level of memory usage for the probability of missing some states. Consequently, it becomes possible to analyze part of the state space of a system when there is not enough memory available to represent the entire state space in an exact manner
41
Kelkar, Unmesh Shrikant. "Reinterpreting the generic: A study of the threshold between static and temporary." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1553618430376827.
Full text
42
Knutsson, Tor. "Implementation and evaluation of data persistence tools for temporal versioned data models." Thesis, Department of Computer and Information Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-19979.
Full textAbstract:
The purpose of this thesis was to investigate different concepts and tools which could support the development of a middleware which persists a temporal and versioned relational data model in an enterprise environment. Further requirements for the target application was that changes to the data model had to be facilitated, so that a small change to the model would not result in changes in several files and application layers. Other requirements include permissioning and audit tracing. In the thesis the reader is presented with a comparison of a set of tools for enterprise development and object/relational mapping. One of the tools, a code generator, is chosen as a good candidate to match the requirements of the project. An implementation is presented, where the chosen tool is used. An XML-based language which is used to define a data model and to provide input data for the tool is presented. Other concepts concerning the implementation is then described in detail. Finally, the author discusses alternative solutions and future improvements.
43
Scherer, Drew P. "Urban Free Agents: Active Territories Through Nascent Ubiquitous Networks." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1336682944.
Full text
44
Grönlund, Christer. "Spatio-temporal processing of surface electromyographic signals : information on neuromuscular function and control." Doctoral thesis, Umeå universitet, Institutionen för strålningsvetenskaper, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-958.
Full textAbstract:
During muscle contraction, electrical signals are generated by the muscle cells. The analysis of those signals is called electromyography (EMG). The EMG signal is mainly determined by physiological factors including so called central factors (central nervous system origin) and peripheral factors (muscle tissue origin). In addition, during the acquisition of EMG signals, technical factors are introduced (measurement equipment origin). The aim of this dissertation was to develop and evaluate methods to estimate physiological properties of the muscles using multichannel surface EMG (MCsEMG) signals. In order to obtain accurate physiological estimates, a method for automatic signal quality estimation was developed. The method’s performance was evaluated using visually classified signals, and the results demonstrated high classification accuracy. A method for estimation of the muscle fibre conduction velocity (MFCV) and the muscle fibre orientation (MFO) was developed. The method was evaluated with synthetic signals and demonstrated high estimation precision at low contraction levels. In order to discriminate between the estimates of MFCV and MFO belonging to single or populations of motor units (MUs), density regions of so called spatial distributions were examined. This method was applied in a study of the trapezius muscle and demonstrated spatial separation of MFCV (as well as MFO) even at high contraction levels. In addition, a method for quantification of MU synchronisation was developed. The performance on synthetic sEMG signals showed high sensitivity on MU synchronisation and robustness to changes in MFCV. The method was applied in a study of the biceps brachii muscle and the relation to force tremor during fatigue. The results showed that MU synchronisation accounted for about 40 % of the force tremor. In conclusion, new sEMG methods were developed to study muscle function and motor control in terms of muscle architecture, muscle fibre characteristics, and processes within the central nervous system.
45
Yang, Yimin. "Exploring Hidden Coherent Feature Groups and Temporal Semantics for Multimedia Big Data Analysis." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2254.
Full textAbstract:
Thanks to the advanced technologies and social networks that allow the data to be widely shared among the Internet, there is an explosion of pervasive multimedia data, generating high demands of multimedia services and applications in various areas for people to easily access and manage multimedia data. Towards such demands, multimedia big data analysis has become an emerging hot topic in both industry and academia, which ranges from basic infrastructure, management, search, and mining to security, privacy, and applications. Within the scope of this dissertation, a multimedia big data analysis framework is proposed for semantic information management and retrieval with a focus on rare event detection in videos. The proposed framework is able to explore hidden semantic feature groups in multimedia data and incorporate temporal semantics, especially for video event detection. First, a hierarchical semantic data representation is presented to alleviate the semantic gap issue, and the Hidden Coherent Feature Group (HCFG) analysis method is proposed to capture the correlation between features and separate the original feature set into semantic groups, seamlessly integrating multimedia data in multiple modalities. Next, an Importance Factor based Temporal Multiple Correspondence Analysis (i.e., IF-TMCA) approach is presented for effective event detection. Specifically, the HCFG algorithm is integrated with the Hierarchical Information Gain Analysis (HIGA) method to generate the Importance Factor (IF) for producing the initial detection results. Then, the TMCA algorithm is proposed to efficiently incorporate temporal semantics for re-ranking and improving the final performance. At last, a sampling-based ensemble learning mechanism is applied to further accommodate the imbalanced datasets. In addition to the multimedia semantic representation and class imbalance problems, lack of organization is another critical issue for multimedia big data analysis. In this framework, an affinity propagation-based summarization method is also proposed to transform the unorganized data into a better structure with clean and well-organized information. The whole framework has been thoroughly evaluated across multiple domains, such as soccer goal event detection and disaster information management.
46
Ralitera, Tahina. "Simulations multi-agent pour les villes intelligentes : une architecture multi-environnement temporelle, spatiale et organisationnelle. Apports pour l’anticipation." Electronic Thesis or Diss., La Réunion, 2020. http://www.theses.fr/2020LARE0017.
Full textAbstract:
La simulation multi-agent est une approche prometteuse pour la construction et la planification des villes intelligentes. Dans ce contexte, nous nous basons sur l'exemple du rechargement de véhicules électriques avec des bornes de recharge publiques. Cet exemple illustre une problématique de gestion de ressources partagées et limitées dans le temps et dans l'espace. Rolland May définit trois principales dimensions que doit intégrer le système : l'espace, l'organisation et le temps. Dans la littérature des simulations multi-agent, la dimension spatiale et la dimension sociale font l'objet de nombreuses propositions. Contrairement à cela, la considération du temps comme une dynamique du système reste sujette à très peu d'étude. De plus, si beaucoup de travaux de recherche traitent de la considération spatiale et organisationnelle dans le raisonnement de l'agent, la considération de la dynamique temporelle est souvent négligée. Cela met en évidence deux aspects sur lesquels nous aimerions contribuer : - le besoin de support d'interaction pour échanger des informations spatiale, sociale et temporelle ; - le besoin de raisonnement anticipatif prenant en compte ces informations spatiale, temporelle et organisationnelle échangées. À travers cette thèse, notre premier objectif consiste à faire évoluer le paradigme de simulation multi-agent de manière à considérer le temps comme un nouveau milieu d'interaction que nous appelons l'environnement temporel. Pour mettre en place cet environnement temporel au sein du système, nous proposons un modèle appelé Agent-Groupe-Rôle-Environnement-Temps (AGRET). Il s'agit d'une extension du modèle générique d'organisation Agent-Groupe-Rôle (AGR) et de sa variante Agent-Groupe-Rôle-Environnement (AGRE). L'originalité de notre approche consiste en la considération de la dimension temporelle comme un environnement, au même titre que l'environnement spatial et l'environnement social. L'environnement temporel est utilisé comme support pour l'échange et le stockage d'informations temporelles. Il vient en complément à l'ordonnanceur de la simulation qui gère le cycle d'activation de la simulation. L'implémentation de ce nouveau milieu d'interaction apporte de nouvelles possibilités. Une d'entre elles est l'usage des informations temporelles perçues à travers l'environnement temporel pour optimiser le raisonnement anticipatif de l'agent. Ce raisonnement anticipatif est particulièrement intéressant dans le contexte de la ville intelligente, car il augmente le réalisme de la simulation en faisant transparaître une capacité cognitive qui est propre à l'humain. Il permet également d'améliorer le mécanisme de décision de l'agent en choisissant un comportement plus pertinent qui prend en compte le contexte d'activation temporel, spatial et social de l'agent. Il se base sur des informations sur le passé, sur le présent et sur le futur planifié, que l'agent perçoit au niveau de l'environnement temporel. La prise en compte des informations futures planifiées constitue une originalité de cette approche. Pour résumer, nos deux contributions relèvent du temps. La première concerne la représentation du temps comme un milieu d'interaction : l'environnement temporel. La deuxième concerne le raisonnement temporel : un raisonnement anticipatif basé sur la perception de l'environnement spatial, de l'environnement temporel et de l'environnement social. Plus particulièrement, nous exploitons la visibilité sur la dimension future du temps qui est permise par l'environnement temporel. Dans l'exemple du rechargement des véhicules électriques, l'intégration de notre approche permet l'optimisation de la répartition des recharges dans l'espace et dans le temps. Nous montrons cela à travers une implémentation sur un modèle de simulation appelé SkuadCityModel. Plus généralement, au niveau de la ville intelligente, l'implémentation de nos contributions permet l'optimisation de la gestion des ressources dans l'espace et dans le tempsThe multiagent simulation is a promising approach for smart city design and planning. In this context, we focus on the example of recharging electric vehicles on public charging points. This example illustrates a problem of managing limited and shared resources in time and space. Rolland May defines three main dimensions that should be integrated by the system: the space, the organisation and the time. In multi-agent simulations, the spatial dimension and the social dimension are the subject of numerous proposals in the literature. In opposite, time remains subject to very few studies and consideration. In addition, if a lot of research deals with spatial and organisational consideration in the agent's reasoning, the time consideration, as a system dynamic, is often overlooked.This highlights two aspects to which we want to contribute:- the need for interaction support to exchange spatial, social and temporal information;- the need for reasoning that takes this exchanged spatial, temporal and organisational information into account.Thought this thesis, our first objective aim at making the multiagent simulation paradigm evolve in order to consider time as a new medium of interaction, in the same way as the spatial environment or the organisational environment. For that purpose, we draw on existing approaches that are commonly used for modelling the space and organisations. Our model is called Agent-Group-Environment-Time (AGRET). It is an extension of the generic organisational model AGR and its variant AGRE.The originality of our approach is that it integrates the temporal dimension as an environment, in the same way as the spatial environment and the social environment. This time environment is used to support the exchange and the storage of time information. It complements the simulation scheduler which manages the simulation activation cycle. The implementation of this new interaction environment brings new possibilities. One of these possibilities is the use of temporal, spatial and social information, perceived through the environments, to optimise the agent's reasoning. In this context, we choose to focus on anticipatory reasoning which is particularly interesting in the context of the smart city. This anticipatory reasoning increases the realism of the simulation by showing a cognitive capacity that is specific to humans. It also improves the agent's decision mechanism by choosing a more relevant behaviour that takes into account the agent's temporal, spatial and social activation context. This anticipatory reasoning is based on information about the past, the present and the future, which the agent perceives through the temporal environment. The inclusion of future information in the anticipative reasoning is an original feature of this approach. This functionality is made possible by the temporal environment, which allows storing and perceiving information on the temporal dimension.To summarise, our contributions are both about time. Our first contribution is about the representation of time as an environment. In the multi-agent level, we propose an interaction support for the exchange and storage of information on space, time and organisation. Our second contribution is about temporal reasoning. We propose an anticipative reasoning based on the perception of spatial, temporal and social environments. In particular, we exploit the visibility of the future dimension of time that is allowed by the temporal environment. In the example of electric vehicles recharge, the integration of our approaches allows, at the collective level, the optimisation of the recharge distribution in space and time. We show this through an implementation on a multi-agent simulation model called SkuadCityModel. More generally, at the level of the smart city, the implementation of our contributions allows the optimisation of resource management in space and time
47
Dominguez, Aliaga Emili del Pilar. "Residencia Universitaria en Los Olivos." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/656329.
Full textAbstract:
El siguiente trabajo de investigación parte como respuesta a la falta de residencias universitarias en Lima, ciudad más importante del país, que a pesar de la gran oferta de estudiantes universitarios que se ha venido dando durante los últimos años, solo cuenta con una residencia universitaria propiamente dicha. Según cifras, del total de becas que se otorga todos los años en el Programa Nacional de Becas (PRONABEC), el 85% lo obtienen estudiantes del interior del país, que en su gran mayoría vienen a la capital a estudiar en universidades tanto públicas como privadas. Ante esta situación, los estudiantes optan por el alquiler de casas que no cuentan con espacios comunes donde puedan desarrollarse académica y socialmente. Es por ello que se plantea una residencia destinada exclusivamente para alumnos universitarios que se encuentran estudiando en alguna institución cercana. Por otro lado, el proyecto al estar ubicado estratégicamente en el distrito de Los Olivos, donde existen varios polos educativos y oportunidades de negocio, estará compuesto por tres tipologías: residencia, oficinas coworking y comercio local, ya que no solo se busca resolver el tema de estadía, sino que ayude a que los jóvenes tengan un mejor desarrollo profesional durante y después de su etapa universitaria, que tengan mayor conexión con su entorno directo y su comunidad, creando patios abiertos acompañados con áreas verdes de esparcimiento donde puedan intercambiar diferentes costumbres que cada uno tiene del lugar donde nacieron, logrando una interculturalidad entre los usuarios.The research work below begins in response to the lack of student housing in Lima, the most important city in the country, which despite the great offer of university students that has been given in recent years, only has one university residence proper. According to statistics, of the total scholarships awarded every year in the National Scholarship Program (PRONABEC), 85% are obtained by students from country, who mostly come to the capital to study at both, public or private universities. Faced with this situation, students choose to rent houses that do not have common spaces where they can develop academically and socially. That is why a residence is proposed exclusively for young university students who are studying at a nearby institution. On the other hand, the project being strategically located in the district of Los Olivos, where there are several educational areas and business opportunities, because of that the project consists in three typologies: residence, coworking offices and local commerce, because not only do you seek to resolve the issue of stay, it also helps to young people have better professional development during and after their university stage , that have greater connection with their direct environment and their community, creating open plazas with green areas of recreation where they can exchange different customs that each has of the place where they were born, achieving an interculturality among users.
Tesis
48
Trevino, April Anahi. "Fluvial Architecture and Reservoir Modeling Along the Strike Direction of the Trail Member of the Ericson Sandstone, Mesaverde Group in Southwest Wyoming." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/8110.
Full textAbstract:
The Trail Member of the upper Cretaceous Ericson Sandstone, part of the Mesaverde Group, is exposed along hundreds of square kilometers through Wyoming along the flanks of several Laramide structural uplifts. This presents a unique opportunity to study the detailed architecture based on bed-scale heterogeneity and better assess the reservoir potential of these strata in outcrop exposure on a regional-scale, and to then relate these observations to producing fields nearby. The fluvial-dominated Trail Member formed as sediments traveled from the active Sevier thrust belt to the Cretaceous Interior Seaway, forming a basinward progradational clastic wedge along a relatively high gradient. The high energy, tectonically active setting led to preservation of sand-rich, often compositionally immature fluvial strata. Though there is an abundance of sand-rich strata in the Trail Member, production from this interval has been unpredictable in current and past fields such as the Trail Unit of southwestern Wyoming.Twelve detailed stratigraphic columns were described at three sites along the eastern flank of the Rock Springs Uplift to show facies heterogeneity beyond what is often available through wells, 69 hand samples were collected for determination of porosity and permeability, and photogrammetric characterization was performed at the three sites. Average porosity decreases along strike from north to south along with net-to-gross. The vertical changes in fluvial architecture within the Trail Member reflect changes in available accommodation. While thickness of the Trail Member is highly variable, ranging between 79 to 108 meters across the study area, there is an overall trend of thickening to the south. Although the character of the Trail strata changes appreciably along strike direction, this interval is consistently rich in sand, and grain size does not change drastically along the length of observed outcrops. This study demonstrated that spatial variability in the thickness, local accommodation, porosity, and net-to-gross of the Trail Member, as well as temporal variability in the amount and character of reservoir sands and channel stacking patterns play an important role in the unpredictability of this reservoir. This study will enable reservoir modeling and aid in future exploration projects within the Trail Member and other comparable systems with similar fluvial architecture and internal heterogeneity.
49
Almousa, Sukaina. "Temporary architecture : an architectural mirage tracing mind/body journey in installation art." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/14281/.
Full textAbstract:
Architecture and arts practices were arguably kept apart during the first half of the 20th century, resisting an emerging overlap that was conducted by both artists and architects. Installation art has subsequently emerged as an art practice but has shared many qualities with architecture because of its creation of spatial territory. Thus, in contemporary art, installation art has been moving in the fluxes between art and architecture. In the case of installation art, a temporary space is created along with a new kind of engagement and perception of the places around us. It motivates the spectator’s imagination when they are inside, experiencing a shelter that is new to the context. At the same time, it motivates memories of that experience after the installation space is removed. Mediating architecture with a spatial medium like an installation invites a new reading of the space to be applied. This reading opposes the interpretation of architecture as still signs, objects or still images, mainly because of the continuous unfolding of the art installation and the close involvement of the viewer in the spectating journey. Consequently, mediating the exhibition space through an installation creates narratives that are subjective and context-specific, while their transition through other mediums continues to alter the original narrative after the work is dismantled. Driven from the proposition that the event of a temporary installation can be articulated by the ‘event’; a concept that French philosopher Gilles Delleuze addresses in his study: The Fold, which considers the accumulated influence of a number of perceptions of space, the thesis discusses the alternative scenarios of reading the temporary architectural space while focusing on the narrative of these architectural happenings by referring mainly to Mieke Bal’s ‘narratology’ as an approach to this new understanding. Before experiencing examples of installation art, a methodological technique; collage- de-collage-re-collage, is presented as a tool to negotiate the narratives collected from the case studies. It is formulated after a theoretical structure is set to investigate the case studies where a need to develop tools of analysis and representation becomes obvious to the work. The study then tests the proposed theoretical framework on three examples, each of which represents a level of temporality in space. As they unfold, the study tracks the encounters that may be further used as instruments to extend the understanding of installation art in particular and temporary spaces in general.
50
Jolivet, Delphine. "Maturité du projet d'urbanisme et temporalités : détermination de la maturité du projet selon son épaisseur et sa transversalité temporelles." Phd thesis, Université François Rabelais - Tours, 2012. http://tel.archives-ouvertes.fr/tel-00985753.
Full textAbstract:
L'intérêt de cette recherche est d'aider à la compréhension du processus de projet, par l'entremise de ses temporalités. Nous déterminons les structures temporelles de plusieurs projets d'urbanisme, c'est-à-dire des représentations des temps des projets sous forme de découpages d'inspiration archéologique, généalogique et épistémologique. Cette analyse, issue de notre méthode d'appréhension du temps du projet, qui correspond à un projet défini comme processus, dans sa fonction de saisie d'une réalité donnée, mobilise deux notions. L'épaisseur temporelle est une image qui nuance la vision lissée du temps du projet : ce sont les temporalités du projet, actives ou inactives, qui s'ajoutent, apparaissent ou qui s'imbriquent. La transversalité temporelle est dépendante du contexte, et donc d'une analyse du parcours temporel du projet suivant les interactions entre projet et contexte. Plusieurs indicateurs de maturité du projet existent et marquent l'avancement du projet au fil du temps.