Dissertations / Theses on the topic 'Grip pattern'
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Mohan, Deepak. "Real-time detection of grip length deviation for fastening operations: a Mahalanobis-Taguchi system (MTS) based approach." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/DeepakMohanThesisFinal_09007dcc80410b1d.pdf.
Full textVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed October 24, 2007) Includes bibliographical references.
Gomes, Maria Cecília. "Pattern Operators for Grid Environments." Doctoral thesis, FCT - UNL, 2007. http://hdl.handle.net/10362/1522.
Full textDepartamento de Informática and Faculdade de Ciências e Tecnologia of the Universidade Nova de Lisboa; Centro de Informática e Tecnologias da Informação of the FCT/UNL; Reitoria da Universidade Nova de Lisboa; Distributed Collaborative Computing Group, Cardiff University, United Kingdom; Fundação para a Ciência e Tecnologia; Instituto de Cooperação Científica e Tecnológica Internacional; French Embassy in Portugal; European Union Commission through the Agentcities.NET and Coordina projects; and the European Science Foundation, EURESCO.
Vialaneix, Guillaume. "Algorithmes parallèles de manipulation de maillages." Thesis, Paris, ENST, 2012. http://www.theses.fr/2012ENST0068/document.
Full textThis thesis deals with different aspects of mesh processing, and the way those operations can be done in parallel, or using distributed memory, when GPUs and supercomputers are more and more commonly used. We present surfacic and volumetric mesh smoothing algorithms, based upon image processing techniques (bilateral filter, local histograms). After those geometric considerations, we talk about topologic methods, as local remeshing, enabling one to generate, from a tetrahedral mesh, one layer of good quality prisms and hexahedron, allowing fluid mechanics simulations in those near-surface areas. Finally, we present a meshing technique based upon particular interactions, in order to construct quad-dominant meshes
Khouri, Noor K. "Structural grid shell design with Islamic pattern topologies." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111282.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 81-84).
Geometric patterns, pioneered centuries ago as a dominant form of ornamentation in Islamic architecture, represent an abundant source of possible topologies and geometries that can be explored in the preliminary design of discrete structures. This diverse design space motivates the coupling between Islamic patterns and the form finding of funicular grid shells for which structural performance is highly affected by topology and geometry. This thesis examines one such pattern through a parametric, performance-driven framework in the context of conceptual design, when many alternatives are being considered. Form finding is conducted via the force density method, which is augmented with the addition of a force density optimization loop to enable grid shell height selection. A further modification allows for force densities to be scaled according to the initial member lengths, introducing sensitivity to pattern geometry in the final form-found structures. The results attest to the viable synergy between architectural and structural objectives through grid shells that perform as well as, or better than, quadrilateral grid shells. Historic and cultural patterns therefore present design opportunities that both expand the conventional grid shell design vocabulary and offer designers an alternative means of referencing vernacular traditions in the modern built environment, through a structural engineering lens. Key words: grid shell, structural topology, Islamic pattern, parametric design, performance driven design, force density method, form finding.
by Noor K. Khouri.
S.M. in Building Technology
Spiridonov, Alexey. "Pattern-avoidance in binary fillings of grid shapes." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/50597.
Full textIncludes bibliographical references (p. 87-88).
A grid shape is a set of boxes chosen from a square grid; any Young diagram is an example. We consider a notion of pattern-avoidance for 0-1 fillings of grid shapes, which generalizes permutation pattern-avoidance. A filling avoids a set of patterns if none of its sub-shapes, obtained by removing some rows and columns, equal any of the patterns. We focus on patterns that are pairs of 2 x 2 fillings. Totally nonnegative Grassmann cells are in bijection with Young shape fillings that avoid particular 2 x 2 pair, which are, in turn, equinumerous with fillings avoiding another 2 x 2 pair. The latter ones correspond to acyclic orientations of the shape's bipartite graph. Motivated by this result, due to Postnikov and Williams, we prove a number of such analogs of Wilf-equivalence for these objects - that is, we show that, in certain classes of shapes, some pattern-avoiding fillings are equinumerous with others. The equivalences in this paper follow from two very different bijections, and from a family of recurrences generalizing results of Postnikov and Williams. We used a computer to test each of the described equivalences on a diverse set of shapes. All our results are nearly tight, in the sense that we found no natural families of shapes, in which the equivalences hold, but the results' hypotheses do not. One of these bijections gives rise to some new combinatorics on tilings of skew Young shapes with rectangles, which we name Popeye diagrams. In a special case, they are exactly Hugh Thomas's snug partitions for d = 2. We show that Popeye diagrams are a lattice, and, moreover, each diagram is a sublattice of the Tamari lattice. We also give a simple enumerative result.
by Alexey Spiridonov.
Ph.D.
Cuthill, Fergus. "The influence of snow microstructure and properties on the grip of winter tyres." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/29534.
Full textMoraal, Reinart Johan. "Pattern synthesis and design of a microstrip wire grid monopulse antenna." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/62783.
Full textDissertation (MEng)--University of Pretoria, 2017.
Electrical, Electronic and Computer Engineering
MEng
Unrestricted
Yaka, Cane. "Studies of axonal regeneration on a grid pattern of extracellular matrix proteins." Thesis, Uppsala universitet, Institutionen för neurovetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-205230.
Full textNigri, Simone. "Ottimizzatore per configurazione automatica di algoritmi di pattern matching." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Find full textShin, Sangmook. "Reynolds-Averaged Navier-Stokes Computation of Tip Clearance Flow in a Compressor Cascade Using an Unstructured Grid." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/28947.
Full textPh. D.
Демська, А. І., В. В. Євсєєв, Т. А. Колесникова, and В. П. Ткаченко. "Methods and means of evaluation usability of human-machine interface." Thesis, Kaunas University of Applied Science, 2019. http://openarchive.nure.ua/handle/document/9241.
Full textStarkey, Jennifer. "House of Screens." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/10090.
Full textMaster of Architecture
Thom, Alison Marie. "Form and Numbers: Mathematical Patterns and Ordering Elements in Design." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0002969.
Full textKasarkod, Jeevak. "A Configurable Job Submission and Scheduling System for the Grid." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/34656.
Full textMaster of Science
Dimble, Dipesh S. "Geometry modeling for patterned and repetitive configurations." Birmingham, Ala. : University of Alabama at Birmingham, 2006. http://www.mhsl.uab.edu/dt/2007m/dimble.pdf.
Full textDe, Luca Silvia. "Studies of CMS data access patterns with machine learning techniques." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12021/.
Full textMarsh, Hannah Eyre. "Beyond thick versus thin: mapping cranial vault thickness patterns in recent Homo sapiens." Diss., University of Iowa, 2013. https://ir.uiowa.edu/etd/2577.
Full textNi, Marcus. "Automated Hybrid Singularity Superposition and Anchored Grid Pattern BEM Algorithm for the Solution of the Inverse Geometric Problem." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5827.
Full textM.S.M.E.
Masters
Mechanical and Aerospace Engineering
Engineering and Computer Science
Mechanical Engineering; Thermo-Fluids
Vattekar, Erik. "Analysis and Model of Consumption Patterns and Solar Energy Potentials for Residential Area Smart Grid Cells." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26094.
Full textSingh, Shailendra. "Smart Meters Big Data : Behavioral Analytics via Incremental Data Mining and Visualization." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35244.
Full textSundborg, Bengt. "Energy Savings by Using Daylight for Basic Urban Shapes : With a Case Study of Three Different Street Types." Licentiate thesis, KTH, Samhällsplanering och miljö, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-194385.
Full textQC 20161028
Homlong, Siri. "The Language of Textiles : Description and Judgement on Textile Pattern Composition." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis (AUU), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7216.
Full textVotano, Roberta Pia. "Geometric patterns of Villa Adriana, the case study of "piazza D'oro"." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
Find full textBarat, Cécile. "Palpage virtuel : une nouvelle approche morphologique pour la mise en correspondance d’objets (Pattern Matching) dans les images à niveaux de gris." Saint-Etienne, 2004. http://www.theses.fr/2004STET4018.
Full textSaghaleini, Mahdi. "Switching Patterns and Steady-State Analysis of Grid-Connected and Stand-Alone Single-Stage Boost-Inverters for PV Applications." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/796.
Full textDu, Liang. "Advanced classification and identification of plugged-in electric loads." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50321.
Full textDeville, Romain. "Spatio-temporal grid mining applied to image classification and cellular automata analysis." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI046/document.
Full textDuring this thesis, we consider the exhaustive graph mining problem for a special kind of graphs : the grids. Theses grids can be used to model objects that present a regular structure. These structures are naturally present in multiple board games (checkers, chess or go for instance) or in ecosystems models using cellular automata. It is also possible to find this structure in a lower level in images, which are 2D grids of pixels, or even in videos, which are 2D+t spatio-temporal grids of pixels. In this thesis, we proposed a new algorithm to find frequent patterns dedicated to spatio-temporal grids, GriMA. Use of regular grids allow our algorithm to reduce the complexity of the isomorphisms test. These tests are often use by generic graph mining algorithm but because of their complexity, they are rarely used on real data. Two applications were proposed to evaluate our algorithm: image classification for 2D grids mining and prediction of cellular automata for 2D+t grids mining
Reddy, Yachika. "An exploration of household energy use patterns among grid electrified households in low-income rural and peri-urban communities in South Africa." Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/5481.
Full textIncludes bibliographical references (p. 135-140).
This study therefore explores the energy use patterns of low-income grid electrified households in rural and peri-urban areas of South Africa – rural and peri-urban areas being the two areas where majority of the poor reside - as a means to inform insights on the energy use of the poor within these two landscapes. It is important to understand the energy use patterns of these households, in order to inform policy interventions aimed at enhancing the energy welfare of low-income households through improved access to safe, affordable and reliable energy services to be designed and targeted congruent to the energy needs of poor households. Energy use patterns of low-income households in this study were examined using data from a household energy survey conducted by the University of Cape Town.
Nardi, Alexandre Ricardo. "Uma arquitetura de baixo acoplamento para execução de padrões de controle de fluxo em grades." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-29052009-143125/.
Full textThe use of workflow control-flow patterns in e-Science applications results in productivity improvement, allowing the scientist to concentrate in his/her own research area. However, the use of workflow control-flow patterns for execution in grids remains an opened question. This work presents a loosely coupled and extensible architecture, allowing use of patterns with or without grids, transparently to the scientist. It also describes the Combined Join Pattern, compliant to parallelization scenarios, commonly found in e-Science applications. As a result, it is expected to help the scientist tasks, giving him or her greater flexibility in the grid usage and in representing parallelization scenarios.
Foster, Elizabeth M. "Sort of Specific." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555443642092248.
Full textZhang, Zhong Yi. "Visualisation and quantification of the defects in glass-fibre reinforced polymer composite materials using electronic speckle pattern interferometry." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/22078.
Full textOvermaat, Eduard. "Balancing Contributions in the Nordic Electricity System : Who bears the brunt of electricity production and consumption patterns?" Thesis, Uppsala universitet, Elektricitetslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-393570.
Full textMoulard, Laurence. "Optimisation de maillages non structurés : applications à la génération, à la correction et à l'adaptation." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10173.
Full textUne étude théorique introduit de nouveaux objets, les tétraphores réalisables, en considérant les seules conditions topologiques d'un maillage. Ces objets se construisent facilement à partir de la frontière du domaine à mailler ; il suffit d'ajouter des contraintes géométriques, très simples à tester et pouvant se traduire sous la forme d'un critère à optimiser, pour obtenir un maillage. Des opérations transformant ces tétraphores sont définies. Les algorithmes d'optimisation sont ainsi bien plus efficaces car ils peuvent être appliques sur un ensemble plus vaste que les maillages
Les algorithmes décrits dans cette thèse sont utilisés industriellement. Des résultats sont donnes pour l'optimisation selon des critères géométriques et topologiques, l'adaptation selon un critère de densité, la correction après déformation des frontières et la génération de maillages
Rusaouen, Gilles. "Éléments finis déformables applicables aux problèmes d'aérodynamique interne." Ecully, Ecole centrale de Lyon, 1987. http://www.theses.fr/1987ECDL0002.
Full textDavins, i. Pujols Montse. "Maltractament en les relacions de parella: estils de personalitat, simptomatologia i ajustament diàdic d'un grup de dones maltractades." Doctoral thesis, Universitat Ramon Llull, 2005. http://hdl.handle.net/10803/9248.
Full textEn el presente trabajo analizamos el maltrato contra las mujeres ejercido por la pareja o el cónyuge a través de un estudio de naturaleza exploratoria, transversal y descriptivo. Hemos evaluado a un total de 43 mujeres con el el Millon Clinical Multiaxial Inventory-II (MCMI-II, Millon, 1999), la Dyadic Adjustment Scale (DAS, Spanier, 1976), y una adaptación de la Entrevista Semiestructurada sobre Maltrato Doméstico (Echeburúa, Corral, Sarasua, Zubizarreta y Sauca, 1994). Concluíamos que: 1) se trataba de un conjunto de mujeres maltratadas que se caracterizaban por haber sufrido experiencias de malos tratos graves en sus relaciones de pareja, respecto a su intensidad, duración, frecuencia y extensión, 2) aunque por un lado el grupo de mujeres maltratadas valoraba la calidad y el ajuste de sus relaciones de pareja de forma deficiente e insatisfactoria; por otro lado, algunos aspectos de la relación quedaban preservados, 3) no se constataba la presencia clínicamente significativa de sintomatología ansiosa y depresiva en más de la mitad de las mujeres estudiadas. No se observaron diferencias sintomatológicas entre las mujeres de ambos recursos asistenciales, 4) hallamos alteraciones en sus estilos de personalidad, predominando los perfiles esquizoides, dependientes, y evitativos, y 5) las mujeres que habían sufrido malos tratos en su infancia se diferenciaban de las que no respecto a algunas circunstancias del maltrato y en determinadas escalas de personalidad y clínica, mostrando mayor gravedad psicopatológica. Futuras investigaciones con muestras más amplias deberán determinar el alcance de esta aportación.
In this work we analyse mistreatment towards women by their partner or spouse. This is an exploratory study, and we use a descriptive transversal design. 43 battered women were assessed in total, with the Millon Clinical Multiaxial Inventory-II (MCMI-II, Millon, 1999), the Dyadic Adjustment Scale (DAS, Spanier, 1976), and an adapted version of the Semi-structured Interview on Domestic Mistreatment (Echeburúa, Corral, Sarasua, Zubizarreta, and Sauca, 1994). We concluded that: (1) the sample was a group of mistreated women characterised by having suffered from severe mistreatment experiences in their couple relationships, concerning intensity, length, frequency, and extension; (2) although on the one hand the group of mistreated women assessed the quality and adjustment of their couple relationship as deficient and dissatisfactory, on the other hand, some aspects of their relationships were protected; (3) there was no clinically significant presence of anxious and depressive symptomatology in more than half the women under study. There were no symptomatological differences between women in both heath care services groups; (4) there were alterations in their personality styles, with a predominance of schizoid, dependent and avoidant profiles; and (5) women that had been mistreated during their childhood were distinguished from those who had not with regards to some circumstances of mistreatment and to certain personality and clinical scales, showing higher psychopathological severity. Future research should deal with wider samples to delimit the scope of this contribution.
Moggia, Narváez Danilo Orlando. "Patterns of Change and Their Relationship to Outcome and Follow-up in Group and Individual Psychotherapy for Depression." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/666746.
Full textEl estudio exploró la presencia de diferentes patrones de cambio en una muestra de pacientes que recibió terapia cognitiva para la depresión en dos formatos secuenciales: grupal e individual. Nuestra hipótesis fue que algunos pacientes responderían mejor a la terapia grupal que a la individual, y que para otros pacientes se encontraría el patrón opuesto. OBJETIVO: Identificar patrones diferenciales de respuesta, describir las diferencias entre las características de los pacientes en cada patrón y, desde estas características, predecir la pertenencia de los pacientes a cada patrón. También quisimos evaluar la relación entre cada patrón y el resultado de la terapia al final del tratamiento y al seguimiento. MÉTODO: 108 adultos que cumplieron criterios para el diagnóstico de trastorno depresivo mayor y/o distimia completaron los tratamientos como parte de un ensayo clínico aleatorizado que combinaba terapia grupal e individual. Los pacientes fueron evaluados con la Entrevista Clínica Estructurada para los Trastornos del Eje I del DSM-IV, el Inventario de Depresión de Beck – II, el Clinical Outcome in Routine Evaluation, la Escala de Evaluación de la Actividad Global, y la técnica de la rejilla. Se utilizaron modelos de crecimiento mixtos para identificar los patrones de cambio en cada fase de tratamiento. Se utilizaron modelos lineales mixtos y análisis de la varianza de medias repetidas para estimar las diferencias en las características de los pacientes entre cada patrón. A través de regresión logística multinomial se estimaron modelos predictivos de los patrones de cambio desde las características iniciales de los pacientes. Finalmente, a través de regresión lineal jerárquica se estimó el poder predictivo de cada patrón para explicar los resultados de la terapia al final del tratamiento, al seguimiento a los tres meses y al seguimiento a un año. RESULTADOS: Se obtuvo una solución de tres clases: quienes mejoraron en terapia grupal, quienes mejoraron en terapia individual y quienes no mejoraron. Los pacientes pertenecientes a cada patrón se diferenciaron en el nivel inicial de sintomatología, malestar psicológico, funcionamiento, discrepancia yo-ideal, aislamiento social auto- percibido y construcción conflictiva del sí-mismo. Algunas de estas variables también funcionaron como predictores de la pertenencia de los pacientes a cada patrón. Más de la mitad de la varianza explicada del resultado de la terapia al final del tratamiento y al seguimiento a un año fue representada por las puntuaciones iniciales de depresión y los patrones de cambio. CONCLUSIONES: Los resultados tendieron a apoyar nuestra hipótesis acerca de patrones diferenciales de respuesta en terapia cognitiva. Los perfiles de los pacientes que obtuvieron mejores resultados en terapia grupal que en terapia individual para depresión pudieron ser identificados.
Frey, Sylvain. "Architectures génériques pour des systèmes autonomiques multi-objectifs ouverts : application aux micro-grilles intelligentes." Thesis, Paris, ENST, 2013. http://www.theses.fr/2013ENST0077/document.
Full textAutonomic features, i.e. the capability of systems to manage themselves, are necessary to control complex systems, i.e. systems that are open, large scale, dynamic, comprise heterogeneous third-party sub-systems and follow multiple, sometimes conflicting objectives. In this thesis, we aim to provide generic reusable supports for designing complex autonomic systems. We propose a formalisation of management objectives, a generic architecture for designingadaptable multi-objective autonomic systems, and generic organisations integrating such autonomic systems.We apply our approach to the concrete case of smart micro-grids which is a relevant example of such complexity. We present a simulation platform we developped and illustrate our approach via several simulation scenarios
Zharkova, Valentina V., J. Aboudarham, Sergei I. Zharkov, Stanley S. Ipson, Ali K. Benkhalil, and N. Fuller. "Solar Feature Catalogues in EGSO." Springer, 2005. http://hdl.handle.net/10454/4032.
Full textThe Solar Feature Catalogues (SFCs) are created from digitized solar images using automated pattern recognition techniques developed in the European Grid of Solar Observation (EGSO) project. The techniques were applied for detection of sunspots, active regions and filaments in the automatically standardized full-disk solar images in Caii K1, Caii K3 and H¿ taken at the Meudon Observatory and white-light images and magnetograms from SOHO/MDI. The results of automated recognition are verified with the manual synoptic maps and available statistical data from other observatories that revealed high detection accuracy. A structured database of the Solar Feature Catalogues is built on the MySQL server for every feature from their recognized parameters and cross-referenced to the original observations. The SFCs are published on the Bradford University web site http://www.cyber.brad.ac.uk/egso/SFC/ with the pre-designed web pages for a search by time, size and location. The SFCs with 9 year coverage (1996¿2004) provide any possible information that can be extracted from full disk digital solar images. Thus information can be used for deeper investigation of the feature origin and association with other features for their automated classification and solar activity forecast.
Cunha, Jéssica Gabriela de Almeida. "Comparação de malhas para problemas de corte e empacotamento." Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/8227.
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Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEG
This work brings the use of grid of points in the resolution of cutting and packing problems that consider rectangular shaped items. The grids can be considered for mathematical programming models and heuristics, and they are independent of the problem. The following grids that are defined by the literature are considered for this work: canonical dissections (also known as normal patterns), reduced raster points, useful numbers, corner points, regular normal patterns, extreme points, and meet-in-the-middle patterns. The objective is to assess the influence of each grid on the resolution of cutting and packing problems, before and after applying reduction procedures, as the one related to update the items size. Theoretical results are obtained from relations of set and size between the grids, showing that the grid of normal patterns and useful numbers are equivalent and, thus, proving formally that the grid of reduced raster points ensures an optimal solution (this result has been formally opened in the literature). In addition, we propose a new procedure to reduce the size of grids. In order to validate the proposed procedure and evaluate the grids, we perform experiments over instances from the literature, where it is possible to observe that the grids of reduced raster points and meet-in-the-middle patterns are the smallest. Experiments were also conducted in a two-dimensional packing problem that uses an integer linear programming model to pack the items in points of a grid. The results indicate that using the reduction procedures it is possible to obtain optimal solutions quicker.
Este trabalho traz o uso de malhas de pontos na resolução de problemas de corte e empacotamento para itens com formato retangular. As malhas podem ser consideradas em modelos de programação matemática e heurísticas, sendo independentes do problema tratado. As seguintes malhas definidas pela literatura, canonical dissections (também conhecida por normal patterns), reduced raster points, useful numbers, corner points, regular normal patterns, extreme points e meet-in-the-middle patterns, são consideradas neste trabalho. O objetivo é apresentar relações que existem entre as malhas e analisar a influência delas sobre o tempo gasto na resolução de problemas de corte e empacotamento, antes e após aplicar procedimentos de redução, como atualizar o tamanho dos itens. Resultados teóricos são obtidos envolvendo relações de conjunto e tamanho entre as malhas, mostrando que a malha de normal patterns e useful numbers são equivalentes e, assim, permitindo provar formalmente que a malha de reduced raster points garante uma solução ótima (resultado que estava em aberto na literatura). Além disso, propõe-se um novo procedimento visando reduzir o tamanho das malhas. Como forma de validar o procedimento proposto e avaliar a redução que ele proporciona nas malhas, executam-se experimentos sobre instâncias da literatura, sendo possível observar que as malhas de reduced raster points e meet-in-the-middle patterns são as menores. Experimentos também foram realizados sobre um problema de empacotamento bidimensional que utiliza um modelo de programação linear inteira para empacotar os itens em pontos da malha. Os resultados indicam que utilizando os procedimentos de redução é possível obter soluções ótimas mais rapidamente.
D'Albis, Tiziano. "Models of spatial representation in the medial entorhinal cortex." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19306.
Full textHigh-level cognitive abilities such as memory, navigation, and decision making rely on the communication between the hippocampal formation and the neocortex. At the interface between these two brain regions is the entorhinal cortex, a multimodal association area where neurons with remarkable representations of self-location have been discovered: the grid cells. Grid cells are neurons that fire according to the position of an animal in its environment and whose firing fields form a periodic triangular pattern. Grid cells are thought to support animal's navigation and spatial memory, but the cellular mechanisms that generate their tuning are still unknown. In this thesis, I study computational models of neural circuits to explain the emergence, inheritance, and amplification of grid-cell activity. In the first part of the thesis, I focus on the initial formation of grid-cell tuning. I embrace the idea that periodic representations of space could emerge via a competition between persistently-active spatial inputs and the reluctance of a neuron to fire for long stretches of time. Building upon previous theoretical work, I propose a single-cell model that generates grid-like activity solely form spatially-irregular inputs, spike-rate adaptation, and Hebbian synaptic plasticity. In the second part of the thesis, I study the inheritance and amplification of grid-cell activity. Motivated by the architecture of entorhinal microcircuits, I investigate how feed-forward and recurrent connections affect grid-cell tuning. I show that grids can be inherited across neuronal populations, and that both feed-forward and recurrent connections can improve the regularity of spatial firing. Finally, I show that a connectivity supporting these functions could self-organize in an unsupervised manner. Altogether, this thesis contributes to a better understanding of the principles governing the neuronal representation of space in the medial entorhinal cortex.
Yue, Shi Yi. "Modelisation calligraphique de formes moleculaires electroniques et geometriques dans une structure grille." Paris 7, 1987. http://www.theses.fr/1987PA077264.
Full textNikola, Dalčeković. "Platforma za transformaciju softverskih rešenja pametnih elektroenergetskih mreža na cloud bazirani višeorganizacijski SaaS." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110701&source=NDLTD&language=en.
Full textProgressive cloud adoption requires migration of existing software solutions. Today, many cloud adoption methodologies exist. Usually, the final phase in cloud adoption include software architecture modifications to make the most of the benefits of cloud computing, like multi-tenancy which enables economic efficiency. The aim of this research is to explain the multi-tenancy and to provide a solution for migration of existing software to multi-tenant SaaS while modifying the target software as little as possible. Therefore, the research proposes a platform that enables easier cloud adoption. After the research phase focused on a smart grid domain, the prototype was created with experiments targeting formulated research questions. The experiments were conducted in a private cloud environment. Research hypotheses were analyzed using hypothetical multi-tenant ADMS (Advanced Distribution Management System) in case of six tenants, with the following conclusions: multi-tenancy saves 32% of resources, it provides three orders of magnitude higher availability, but affects performances by introducing a delay of up to 20 milliseconds per service request. Also, reliable actors programing model used in modern PaaS services is not suitable in use cases with needs for synchronous behavior, nor in in use cases where querying a set of actors is needed in real time. The research demonstrates feasibility of applying multi-tenancy even in cases of complex software solutions like the ones in the smart grid domain. The proposed solution is academically validated and it can be used as a final important step in migration of existing software to cloud based multi-tenant SaaS.
Bellman, Lina. "Auktoriserade fastighetsvärderares syn på värdering : tankemönster om kommersiella fastigheter." Licentiate thesis, Mittuniversitetet, Institutionen för samhällsvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-17177.
Full textThe valuation of commercial properties is about collecting, analyzing and assessing information. In addition to the fact that the properties' market values are important to society as a whole, they are important to those who make decisions based on value statements. The purpose of this thesis is a) to identify how Swedish professional property valuers certified by ASPECT look at the value-influencing factors that determine the values of commercial properties when valuation is made prior to preparing financial statements and b) to compare and draw conclusions about the ASPECT certified property valuers´ thinking in terms of content, complexity and homogeneity and to what extent the thought patterns differ between different groups of property valuers. To map property valuers´ thought patterns I use Kelly´s (1955) Repertory Grid technique and complementary semi-structured interviews. I have interviewed nearly half (67) of the professional ASPECT certified property valuers in Sweden. The result shows three interpretable dimensions that can be considered central in the property valuers´ thought patterns. The first dimension relates to the focus of valuation. It is about property valuers understanding that different kinds of information and assessment have different effects on property valuation on micro and macro levels. The micro level refers to the relation between properties and their property owner and macro level refers to the relation between properties and the market at large. The second dimension shows that verifiable information reflects that the property valuer understands that some information is more or less verifiable by the nature of information. The third dimension is related to the assessment´s complexity. It is about property valuers perceiving that different types of information are simpler and more complex to assess. The results indicate that ASPECT certified property valuers have relatively complex thought patterns. When certified property valuers are divided into groups based on different background variables, the three dimensions are in all groups. This indicates that property valuers also have relatively homogeneous thought structures. Some differences in complexity and homogeneity emerge, however. These differences are mainly based on the property valuers´ place of business and what universities they studied at.
Centrum för forskning om ekonomiska relationer (CER)
Landes, Pierre-Edouard. "Extraction d'information pour l'édition et la synthèse par l'exemple en rendu expressif." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00637651.
Full textFanton, Hervé. "Cartographie rapide de l'environnement local d'un robot mobile autonome." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0130.
Full textMonthe, Luc Arthur. "Etude des équations aux dérivées partielles hyperboliques application aux équations de Saint-Venant." Rouen, 1997. http://www.theses.fr/1997ROUES074.
Full textOrti, Rachel. "Radiosité dynamique 2D et complexe de visibilité." Phd thesis, Université Joseph Fourier (Grenoble), 1997. http://tel.archives-ouvertes.fr/tel-00004958.
Full textFerré, Antoine. "Élaboration et caractérisation 3D de l’endommagement dans les composites amorphe-cristallins métalliques." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0038.
Full textMetallic glasses have been produced in the 1960s and bulk metallic glasses in the 1980s. Many studies, focused on these materials in their amorphous state, concluded that they had high mechanical strength but shown low ductility. As part of EDDAM project that started in 2011, these materials were introduced as small particles in an aluminum matrix. The first objective of this study is to see if the metallic glass is less brittle in this form. The second objective is to find an alternative of ceramic reinforcements in metal matrix composites. These materials have low cohesion at the matrix/inclusion interface. In order to characterize the damage in new amorphous-crystalline composite, X-ray tomography was used. This allows to characterize damage in materials and to obtain a 3D viewing. The main objective of this thesis was to study damage (nucleation, growth and coalescence) in composite materials using X-ray tomography during tensile tests. Selected materials are constituted of an aluminum matrix and small metallic glass reinforcements (Zr57Cu20Al_10Ni8Ti5). Composites with different volume fractions (from 1vol.% to 10vol.%) were prepared by Spark Plasma Sintering (SPS) and hot extrusion. A particular attention was paid to the microstructural characterization of the basic constituents. Qualitative analysis was used to compare SPS composites with SPS plus hot extrusion composites. Damage nucleation, growth and coalescence were observed. Quantitative analysis was mainly devoted to the first damage step. Growth and coalescence were difficult to follow due to fast rupture and interrupted tensile tests. The modeling of an amorphous-crystalline composite has been introduced in order to reproduce experimental damage analyses. The first approach requires further investigation to predict damage with different volume fractions. However, this part shows the beginning of an innovative model based on the experimental microstructure
Lachaud, Jacques-Olivier. "Extraction de surfaces à partir d'images tridimensionnelles : approche discrète et approche par modèle déformable." Phd thesis, Université Joseph Fourier (Grenoble), 1998. http://tel.archives-ouvertes.fr/tel-00004892.
Full textKasvayee, Keivan Amiri. "On the deformation behavior and cracking of ductile iron; effect of microstructure." Doctoral thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Material och tillverkning, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-36852.
Full textDenna avhandling fokuserar på effekten av variationer i mikrostrukturen på mekaniska egenskaper och deformationsbeteende hos segjärn. För att undersöka dessa effekter, två olika sorter av segjärn, (i) GJS-500-7 och (ii) högkisellegerad GJS-500-14, gjutits till plattor av olika tjocklekar för att generera mikrostrukturvariationen. Mikrostrukturundersökning, samt drag- och hårdhetsprov gjordes på de gjutna plattorna. Resultaten visade att en högre ferritfraktion, grafitpartikelantal och sträckgräns i den högkisellegerade GJS-500-14-sorten jämfört med GJS-500-7. För att studera förhållandet mellan mikrostrukturell variation och spännings-töjningsbeteendet på makroskala, modellerades detta med hjälp av Ludwigson-ekvationen. De erhållna spännings-töjningsegenskaperna modellerades baserat på mikrostrukturell karaktäristika genom multipel linjärregression och variansanalys (ANOVA). Modellerna visade att kiselhalt, grafitpartikelantal, ferritfraktion och porfraktion var de viktigaste bidragande faktorerna. Modellerna implementerades i ett simuleringsprogram för gjutningsprocessen. Resultatet från simuleringen validerades med hjälp av experimentella data som inte ingick i underlaget för regressionsanalysen. Detta möjliggjorde att prediktera spännings-töjningsbeteendet och dess variation hos gjutna segjärns komponenter med liknande sammansättning och gjutna tjocklekar som användes i denna studie. För att kunna undersöka deformationsbeteendet på mikroskala utvecklades en metod för kvantitativ mätning av töjning i mikrostrukturen, genom DIC-tekniken (digital image correlation) tillsammans med in-situ dragprovning. I denna metod utvecklades en grop-etsningsprocess för att generera ett slumpvis prickmönster, vilket möjliggjorde DIC-töjningsmätning i matrisen och i området mellan grafitpartiklarna med tillräcklig upplösning. Metoden validerades genom benchmarking av den uppmätta sträckgränsen mot materialets makroskopiska sträckgräns mätt med konventionell dragprovning. Det mikrostrukturella deformationsbeteendet under dragbelastning karakteriserades. Under elastisk deformation avslöjade töjningsmönstret en heterogen töjningsfördelning i mikrostrukturen, och bildandet av skjuvband mellan grafitpartiklar. Sprickbildning initierades vid låg spänning och redan vid de spänningsnivåer som ligger vis ”knät” på dragprovningskurvan, vilket indikerar energidissipering genom både begynnande plastisk deformation och sprickbildning. Den lokala töjningen vis sprickinitiering skedde då den lokala töjningen översteg 2%, vilket indikerar att detta skulle kunna vara en tröskelnivå för den töjning som erfordras för initiering av mikro-sprickor. En kontinuum Finita Element (FE) modell utvecklades för att prediktera töjningen hos ett segjärn och dess fördelning i segjärns mikrostruktur. Materialparametrarna för denna modell optimerades genom att anpassa parametrarna i Ramberg-Osgood ekvationen. De predikterade töjningsfördelningarna jämfördes med de experimentell uppmätta töjningsmönstren uppmätta med DIC, både kvalitativt och kvantitativt. Töjningsmönstren överensstämde i stor utsträckning, vilket resulterade i att modellerna kunde anses vara validerade på mikronivå. För att kunna mäta töjningsmönster under dynamiska förlopp på mikronivå utvecklades en metod för att skapa prickmönster och att utföra in-situ CT provning i ett svepeletronmikroskop (SEM). Prickmönstret skapades genom avverkning med en fokuserad jonstråle (FIB), och provades på det ferritiska segjärnet (GJS-500-14 grad). Resultaten visade att maximal töjningskoncentration fanns i närheten av mikrosprickorna, framförallt framför sprickspetsen.