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Dissertations / Theses on the topic 'Shaped part'
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Kopcík, Daniel. "Technologie výroby tvarové součásti víceosým CNC obráběním." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232185.
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The theoretical part of this thesis is introducing basic information in production of shaped components on CNC machines. It describes each steps from a design of the component to production. Main target is summarization of available modern technologies that can be used. Experimental part uses these modern technologies for processing design shaped component. It describes process of design 3D model part in CAD system, subsequently creation of program for machining in CAM system and solves production of part on CNC machine. The aim of this thesis is design part with interesting design and production difficult enough to represent company, where it was made.
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Dikmans, Antonius Josephus. "Synthesis of belt-shaped macrocyclic cyclophanes, Part I, synthesis of key intermediates in the proposed synthesis of (7)- and (8)cyclacenes, Part II, synthesis of key intermediates in a proposed synthesis of a cyclic decaphenylene." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ31119.pdf.
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Yalim, Keles Hacer. "Part Embedding For Shape Grammars." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612231/index.pdf.
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Computational modeling of part relations of shapes is a challenging problem that has been addressed by many researchers since sixties. The most important source of the difficulty is the continuous nature of shapes, which makes the expression of shape very difficult in terms of discrete parts. When discrete parts are combined, they fuse and yield new parts, i.e. parts emerge. There is a number of methods that support emergent part detection. However all of these methods are based on strong assumptions in terms of what constitute a part. There is a need for a generic solution that treats a shape independently of any restriction resulting from
analytical, geometrical, or logical abstractions. To this end, we have developed two novel strategies, which can be used both separately and jointly. Both strategies are relatable to the algebraic formalization of shape grammars (by Stiny). In the course of this thesis work, we have introduced a novel data structure called Over-Complete Graph to address the problem of part embedding in the existence of discrete registration marksand we have developed a novel and robust method for the automatic selection of registration marks. Both developments are certainly useful for other visual problems. On the application side, we have tested our techniques on puzzling Seljuk patterns (from Kayseri) to demonstrate how the developed techniques give way to computational creativity. Apart from the techniques we have developed, the most important contribution of our work is that shapes are treated as perceived wholes rather than composed, as compellingly demonstrated by Seljuk pattern experiments.
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Caputo, Matthew P. "4-Dimensional Printing and Characterization of Net-Shaped Porous Parts Made from Magnetic Ni-Mn-Ga Shape Memory Alloy Powders." Youngstown State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1525436335401265.
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Kurnadi, Martin S. "Workholding Optimization for Turning of Ring Shaped Parts." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7125.
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The ability to produce precision ring shaped parts using the turning process depends significantly on the workholding characteristics. Workholding parameters such as the number of jaws and chucking force are known to influence the roundness tolerance of ring shaped parts commonly used in bearing applications. Experimental trial and error methods are often used in practice to optimize the workholding parameters to achieve the desired part quality. This thesis develops a systematic mathematical approach for optimizing these parameters using a finished cut roundness prediction model and a model for determining the reaction force between the chuck jaws and the ring. The roundness prediction model is verified through experiments for different cutting conditions.
The optimization approach takes as input the required roundness tolerance, geometry and mechanical properties of the ring, cutting forces, and the coefficient of friction between the jaws and the ring. The output consists of the minimum number of jaws and the range of acceptable chucking forces that satisfy the required tolerance while preventing slip of the ring. Simulation examples are used to illustrate the proposed workholding optimization approach for a hard turning application. In addition, based on the optimization model, the thesis proposes a novel concept of dynamic chucking force control that promises to yield part roundness that is superior to conventional chucking.
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Fischer, Boris Vasco. "Prediction of the trimming contour on intermediate shapes in the multi-stage forming process." Thesis, Coventry University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245600.
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Roozbehjavan, Pooneh. "Experimental and numerical study of distortion in flat, L-shaped, and U-shaped carbon fiber-epoxy composite parts." Thesis, Wichita State University, 2012. http://hdl.handle.net/10057/5539.
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In this work, the effect of different parameters, including stacking sequence, part thickness, and tooling material, on distortion of flat panels was investigated. A Romer arm equipped with a laser scanner was used to obtain the maximum amount of distortion as well as the 3D pattern of distortion for each panel. Among the different stacking sequences, the maximum distortion was observed in the asymmetric and balanced panel, while the least distortion belonged to the symmetric and unbalanced one. Furthermore, thinner panels were more distorted than thicker panels with the same planar size and stacking sequences. This study showed that distortion of the flat panels caused by asymmetry in the stacking sequence was an order of magnitude greater than distortion of the panels due to imbalance in the stacking sequence.
L-shaped and U-shaped panels were also fabricated to investigate the effect of stacking sequence on spring-in angle and warpage of the panels. Among all the stacking sequences, the panel with an asymmetric and unbalanced stacking sequence showed the least spring-in angle, while the largest angle was observed in the symmetric and balanced panel. Although asymmetry in the stacking sequences reduced the spring-in angle, significantly more warpage was observed in the panels with asymmetric stacking sequences, as compared to the symmetric ones.
MSC Marc was used to predict the distortion of the panels, and the simulation results were compared with the experimental results for several stacking sequences of the flat and the L-shaped panels. An L-shaped panel with the stacking sequence of [0/45/90/-45]4 was simulated to investigate the effect of curve radius and tool geometry on the spring-in angle. The FEA results showed that curing the L-shaped panel on a concave tool led to less spring-in angle, as compared to the panel confined to a convex tool.Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Mechanical Engineering
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Hsieh, Kuang-Han. "Part geometry for advanced quality control and process monitoring /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9842539.
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Zouhar, Alexander. "Part-based recognition of 3-D objects with application to shape modeling in hearing aid manufacturing." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-192670.
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In order to meet the needs of people with hearing loss today hearing aids are custom designed. Increasingly accurate 3-D scanning technology has contributed to the transition from conventional production scenarios to software based processes. Nonetheless, there is a tremendous amount of manual work involved to transform an input 3-D surface mesh of the outer ear into a final hearing aid shape. This manual work is often cumbersome and requires lots of experience which is why automatic solutions are of high practical relevance.
This work is concerned with the recognition of 3-D surface meshes of ear implants. In particular we present a semantic part-labeling framework which significantly outperforms existing approaches for this task. We make at least three contributions which may also be found useful for other classes of 3-D meshes.
Firstly, we validate the discriminative performance of several local descriptors and show that the majority of them performs poorly on our data except for 3-D shape contexts. The reason for this is that many local descriptor schemas are not rich enough to capture subtle variations in form of bends which is typical for organic shapes.
Secondly, based on the observation that the left and the right outer ear of an individual look very similar we raised the question how similar the ear shapes among arbitrary individuals are? In this work, we define a notion of distance between ear shapes as building block of a non-parametric shape model of the ear to better handle the anatomical variability in ear implant labeling.
Thirdly, we introduce a conditional random field model with a variety of label priors to facilitate the semantic part-labeling of 3-D meshes of ear implants. In particular we introduce the concept of a global parametric transition prior to enforce transition boundaries between adjacent object parts with an a priori known parametric form. In this way we were able to overcome the issue of inadequate geometric cues (e.g., ridges, bumps, concavities) as natural indicators for the presence of part boundaries.
The last part of this work offers an outlook to possible extensions of our methods, in particular the development of 3-D descriptors that are fast to compute whilst at the same time rich enough to capture the characteristic differences between objects residing in the same class.
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Rydell, William, and Julian Kneubühler. "Shared Field of Play, Being Part of a Team, Being Part of an Organization: Effects on Building a Personal Brand in Team Sports." Thesis, Högskolan i Halmstad, Centrum för innovations-, entreprenörskaps- och lärandeforskning (CIEL), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-37054.
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The purpose of this thesis was to identify what effects shared field of play, being part of a team and being part of an organization has on building brand equity for athletes in team sports. Even though personal branding of athletes has received academic coverage over the past years, the role of the shared field of play, being part of a team and being part of an organization have been overlooked. This research gap was addressed through four in-depth semi-structured interviews with professional soccer players from Sweden and Switzerland. Those interviews were analyzed using a theoretical framework which consists of the additional characteristics of team sports and its effect on personal branding. Findings of this thesis show that athletes lose their ‘uniqueness’ when they share the field with otherathletes as they are also wearing the same uniform, this leaves only a few opportunities to differentiate themselves from teammates by using product related and non-product related attributes. That the athletes with playing positions that can make a decisive difference on the outcome of the game receive extra attention. That to cooperate and exhibit a strong relationship between athletes towards the audience gives favorable brand associations and an increased following, thusstrengthening one’s brand equity. That athletes should try to benefit from the popularity of another athlete’s personal brand as long it is there, but that one muststay authentic in the process. That being employed and getting a stable and continuous salary gives athletes comfort and a feeling of safety which might have a negative effect on their ambition of building their personal brand. And lastly, to usethe club’s brand to build one’s own personal brand by paying homage to the club by engaging with supporters through gestures when celebrating victories and individual achievements.
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Adolfsson, Oscar. "Effekter av inkuberingstemperatur hos juvenil atlantlax (Salmo salar L.)." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-67269.
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Rising temperatures, because of climate change, will have major consequences for the world's fish populations, including the Atlantic salmon Salmo salar L. The greatest temperature changes are expected to occur during winter, which will affect S. salar since the eggs are developing during this time of year. Several studies have shown that elevated temperatures during embryogenesis cause morphological changes, in S. Salar, that are shown in later life stages. Some of these studies indicate that eggs incubated at high temperatures should generate parr with deeper bodies. To investigate whether high temperatures during the egg stage cause changes in body shape, parr from normal and high temperature incubated eggs, referred to as as “cold” and “warm” fish, respectively, were examined. A box-truss of euclidean distances between 10 landmarks on the fish body and a discriminant function analysis (DFA) was used to determine which of the distances best discriminated between the two groups. The test showed a significant discrimination between cold and warm parr regarding body shape where cold parr had greater heads and warm parr were deeper over the tail region and showed greater distances between the pelvic fin and the front attachment of the anal fin. 67,3 % of all parr where correctly classified by the test. These results support those notions that indicates that the incubation temperature is important for the morphological development of S. salar although it does not support the hypothesis.Stigande temperaturer, till följd av klimatförändringar kommer att få stora konsekvenser för jordens fiskpopulationer, däribland atlantlaxen Salmo. Salar L. Störst temperaturförändringar väntas ske vintertid, vilket kommer att påverka S. Salar som övervintrar sin rom. Flera studier har visat att förhöjda temperaturer under embryogenesen ger upphov till morfologiska förändringar hos S. Salar under senare livsstadier. Några studier pekar mot att högtemperaturinkuberad rom torde ge upphov till parr med djupare kroppsform. För att undersöka om höga temperaturer under romstadiet ger upphov till förändringar beträffande kroppsform undersöktes parr (kalla resp. varma) från normal- respektive högtemperaturinkuberad rom. Med hjälp av ett rutnät / box-truss mättes avstånd mellan 10 landmärken på fiskkroppen och en discriminant function analysis DFA användes för att avgöra vilket av avstånden som bäst diskriminerade mellan de båda grupperna. Testet visade en signifikant diskriminering mellan kalla och varma parr beträffande kroppsform där kalla parr hade större huvudmått och varma parr hade djupare mått över stjärtspolen och längre mått mellan analfenans främre infästning och bukfenan. 67,3 % av all parr förutspåddes tillhöra rätt grupp. Dessa resultat är i linje med den litteratur som anger att inkuberingstemperaturen har betydelse för den morfologiska utvecklingen hos S. Salar däremot stödjer de inte den angivna hypotesen.
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Hidayatulloh, Poempida Urip Priyopurnomo. "Multi-resolution modelling of human body parts." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322738.
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Sefik, Esen. "Individual Microbes Shape Various Parts of the Immune System." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:23845459.
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The gastrointestinal tract, home to a vast number of bacteria, requires finely-tuned regulatory and effector immune mechanisms to maintain homeostasis and tolerance. In a large-scale screen, we studied the impacts of single microbes on major immune populations, whole intestinal tissue homeostasis and metabolism. Bacteria interacted with the host at multiple levels including cytokine responses, accumulation of various T cells, alterations in composition of mononuclear phagocytes and induction of epithelial cell genes as measured by transcriptome analysis of whole intestinal tissue. Interestingly, taxonomically unrelated bacteria elicited similar immune phenotypes and metabolic effects. A more focused analysis of the induction of regulatory mechanisms revealed a microbiota-dependent, context-specific transcriptional control of Foxp3+ regulatory T cells and of IL17 producing T cells. These facets were both regulated by Rorγ, a transcription factor known for its antagonistic effects on Foxp3. Paradoxically, Rorγ expression induced by bacteria in colonic Foxp3+ regulatory T cells was necessary for function of these cells especially in the context of IL17 and IFNγ-mediated colitis. Overall, this large-scale screen provides a comprehensive study of how individual bacterial species shape many aspects of the host immunity and metabolism, and exemplifies a microbiota-dependent, context-specific mechanism that potentiates function in Foxp3+ regulatory T cells.Medical Sciences
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Ott, Patrick. "Segmentation features, visibility modeling and shared parts for object detection." Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.581947.
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This thesis investigates the problem of object localization in still images and is separated into three individual parts. The first part proposes a new set of feature descriptors, motivated by the problem of pedestrian detection. Sliding window classifiers, notably using the Histogram-of-Gradient (HOG) features proposed by Dalal & Triggs are the state-of-the-art for this task, and we base our method on this approach. We propose a novel feature extraction scheme which computes implicit 'soft segmentations' of image regions into foreground/background. The method yields stronger object/background edges than gray-scale gradient alone, suppresses textural and shading variations, and captures local coherence of object appearance. The main contributions of this part are: (i) incorporation of segmentation cues into object detection; (ii) integration with classifier learning c.f. a post-processing filter and (iii) high computational efficiency. The second part of the thesis considers deformable part-based models (DPM) as proposed by Felzenszwalb et al. These models have demonstrated state-of-the-art results in object localization and offer a high degree of learnt invariance by utilizing viewpoint- dependent mixture components and movable parts in each mixture component. One might hope to increase the accuracy of the DPM by increasing the number of mixture components and parts to give a more faithful model, but limited training data prevents this from being effective. We propose an extension to the DPM which allows for sharing of object part models among multiple mixture components as well as object classes. This results in more compact models and allows training examples to be shared by multiple components, ameliorating the effect of a limited size training set. We (i) reformulate the DPM to incorporate part sharing, and (ii) propose a novel energy function allowing for coupled training of mixture components and object classes. An 'elephant in the room' for most current methods is the lack of explicit modeling of partial visibility due to occlusion by other objects or truncation by the image boundary. In the third part of this thesis, we propose a method which explicitly models partial visibility by treating it as a latent variable. As a second contribution we propose a novel non- maximum suppression scheme which takes into account partial visibility of objects while, in contrast to other methods, providing a globally optimal solution. Our method gives more detailed scene interpretations, in that we are able to identify the visible parts of an object. We evaluate all methods on the PASCAL VOC 2010 dataset. In addition, we report state-of-the-art results on the INRIAPerson pedestrian detection dataset for the first part, considerably exceeding those of the original HOG detector.
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Shafer, Timothy Lee. "Evaluating aspen responses to changes in elk abundance, distribution and behavior following wolf reestablishment in West-Central Yellowstone National Park." Thesis, Montana State University, 2011. http://etd.lib.montana.edu/etd/2011/shafer/ShaferT1211.pdf.
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The reintroduction of wolves to Yellowstone National Park (YNP) in the mid-1990's has created a unique natural experiment for the investigation of trophic cascades operating at large spatial scales and involving large terrestrial mammals. Wolves have been directly linked to changes in elk density/behavior and have been hypothesized to be the driving force behind observed changes in woody plant growth in the system. The primary objectives of this study were to investigate the occurrence of a trophic cascade among wolves, elk and aspen in an area of YNP where elk abundance and distribution changed dramatically as a direct result of wolf reestablishment in the system. In Chapter 2, I determined the distribution and demographic characteristics of aspen in the Madison headwaters study area (MHSA) and identified the environmental attributes associated with its distribution on the landscape. Additionally, I evaluated the morphology, productivity, and persistence of aspen in both clonal and seedling-established. In Chapter 3, I established a climate-growth relationship for aspen to investigate the occurrence of a shift in productivity related to climate coincident with the timing of wolf reestablishment. I used standard dendrochronology techniques to investigate growth trends and identified which climate variables are most important to aspen productivity in this region. Additionally, I established the timing of historic aspen recruitment in the MHSA using age of mature trees. In Chapter 4, I investigated a trophic cascade among wolves, elk and aspen. I reconstructed historical browse conditions for aspen to look for a shift in browse regimes that occurred concurrently with the changes in elk abundance/distribution by performing a dendrochronological analysis of aspen architectural morphology. I also evaluated plant height, productivity, and longevity of aspen where elk densities had declined dramatically in order to capture the expected growth response. I used ANOVA's and multiple comparison procedures to evaluate browse conditions and aspen growth among sites where elk densities have declined dramatically and those where elk densities have remained relatively constant.
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Kandis, Mouhyieldin. "Observation and modeling of part growth and shape evolution of polymer parts produced by non-isothermal and laser-induced sintering of powders /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
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Merhy, Mayss'aa. "Reconnaissance de formes basée géodésiques et déformations locales de formes." Thesis, Brest, 2017. http://www.theses.fr/2017BRES0051/document.
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Les performances d’un système de reconnaissance de formes dépendent en bonne partie de la qualité de l’image segmentée. Malgré les progrès effectués, une segmentation complète (c’est-à-dire avec des contours entiers) ne peut pas être toujours atteinte. Dans un premier temps, nous nous plaçons dans le cas où seulement certaines parties de la forme entière sont disponibles. D’abord, afin d’assurer l’invariance des parties de formes aux transformations géométriques, nous développons une méthode d’optimisation de l’analyse procustéenne qui consiste à retrouver les points extrémités optimaux qui minimisent la distance de Procutse. Ensuite, nous proposons une approche de reconnaissance de parties de formes et une approche de reconnaissance de formes partielles. Ces deux approches, basées-contour, sont fondées sur un recalage robuste entre les parties de formes. La méthode de recalage proposée consiste à optimiser une mesure de similarité basée sur les géodésiques dans l’espace de formes. Ainsi, nous exploitons le résidu du recalage pour définir une nouvelle métrique pour la reconnaissance de parties de formes. Puis, nous décrivons une stratégie de combinaison avec cette même métrique pour la reconnaissance de formes partielles. Par la suite, nous proposons d’utiliser la distance géodésique proposée pour la reconnaissance des parties de formes dans la définition d’une métrique globale pour la reconnaissance de formes entières. Les tests de reconnaissance (classification et recherche) sont effectués sur des parties requêtes et des formes entières de la base d’images MPEG-7, puis sur des images réelles segmentées. Les résultats expérimentaux montrent la supériorité de nos méthodes par rapport aux autres méthodes de l’état de l’artThe quality of the segmentation process directly affects the performance of the shape recognition. Despite the progress that has been made, it is often unreachable to segment the entire object (i.e. closed contour). In fact, only some parts/fragments of objects can be detected. We first develop a new alignment method based on Procrustes analysis in order to ensure invariance of shape parts to geometric transformations (translation, rotation and scale factor). The proposed method consists in finding optimal extremities which minimize the Procrustes distance. Then, we propose a shape part recognition approach and a partial shape recognition approach. These two contour-based approaches are based on matching between shape parts to compare. This matching process consists in establishing a robust registration between shape parts based on geodesics in the shape space. Thus, we exploit the registration residual to define a novel distance for shape part recognition. Later, for partial shape recognition, we describe a geodesics-based combining strategy with the same distance. As well, we propose to use the geodesics distance proposed for shape part recognition to define a global distance for entire shape recognition. Experiments are carried out on parts of shapes and entire shapes of theMPEG-7 database, then on parts issued from segmented real images. The obtained results demonstrate the effectiveness of our proposed recognition schemes. The proposed approaches are shown to significantly outperform previous works for classification and retrieval applications
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Wendland, Mitchel. "Shape from focus image processing approach based 3D model construction of manufactured part." Scholarly Commons, 2018. https://scholarlycommons.pacific.edu/uop_etds/3569.
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The purpose of this research is to develop a process and an algorithm to create a 3D model of the surface a part. This is accomplished using a single camera and a CNC machine as a movable stage. A gradient based focus measure operator written in MATLAB is used to process the images and to generate the surface model. The scopes of this research are image processing and surface model generation as well as verifying part accuracy. The algorithm is able to create a rough surface model of a photographed part, and with careful calibration in a limited number of scenarios has been used in checking part z dimensions.
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Nguyen, Jason Nam. "A heuristic optimization method for the design of meso-scale truss structure for complex-shaped parts." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44810.
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Advances in additive manufacturing technologies have brought a new paradigm shift to both design and manufacturing. There is a much bigger design space in which designers can achieve a level of complexity and customizability, which are infeasible using traditional manufacturing processes. One application of this technology is for fabrication of meso-scale lattice structures (MSLS). These types of structures are designed to have material where it is needed for specific applications. They are suitable for any weight-critical applications, particularly in industries where both low weight and high strength are desired. MSLS can easily have hundreds to thousands of individual strut, where the diameter of each strut can be treated as a design variable. As a result, the design process poses a computational challenge. Since the computational complexity of the design problem often scales exponentially with the number of design variables, topological optimization that requires multi-variable optimization algorithm is infeasible for large-scale problems.
In previous research, a new method was presented for efficiently optimizing MSLS by utilizing a heuristic that reduces the multivariable optimization problem to a problem of only two variables. The method is called the Size Matching and Scaling (SMS) method, which combines solid-body analysis and predefined unit-cell library to generate the topology of the structure. However, the method lacks a systematic methodology to generate the initial ground geometry for the design process, which limits the previous implementations of the SMS method to only simple, axis-aligned structures.
In this research, an augmented SMS method is presented. The augmented method includes the integration of free-mesh approach in generating the initial ground geometry. The software that embodies that ground geometry generation process is integrated to commercial CAD system that allows designer to set lattice size parameters through graphical user interface. In this thesis, the augmented method and the unit-cell library are applied to various design examples.
The augmented SMS method can be applied effectively in the design of conformal lattice structure with highly optimized stiffness and volume for complex surface. Conformal lattice structures are those conformed to the shape of a part's surface and that can used to stiffen or strengthen a complex and curved surface. This design approach removes the need for a rigorous topology optimization, which is a main bottleneck in designing MSLS.
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Docherty, Daniel William. "COACHING AND DEVELOPMENT AS PART OF A MANAGER-SUBORDINATE RELATIONSHIP: A MIXED-METHODS STUDY OF TOOLS, DYNAMICS, AND OUTCOMES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1592937542615669.
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Silva, Marcelo Robson de Azevedo Martins da. "Análise comparativa entre suportes para janelamento na técnica Shape From Focus." Universidade do Vale do Rio dos Sinos, 2017. http://www.repositorio.jesuita.org.br/handle/UNISINOS/6900.
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Existem muitas técnicas para reconstrução de objetos tridimensionais em computador, algumas são empregadas em ambientes controlados e outras em ambientes que não necessitam de grande precisão. Shape From Focus é um método bastante conhecido que utiliza uma pilha de fotografias retiradas com diferentes configurações focais para reconstruir um mapa de profundidade bastante preciso. Este método obtém maior estabilidade na reconstrução de objetos muito pequenos ou microscópios, mas recentemente vem sendo utilizado para reconstrução de ambientes. Com isso, o modelo de reconstrução de mapas de profundidade, Shape From Focus, passou a processar maiores quantidades de interferências na pilha de fotografias, como por exemplo, a distorção da lente, o aumento da profundidade de campo, o efeito zoom, entre outros, e também o ruído introduzido pelo ambiente. Este trabalho analisa os efeitos do suporte adaptativo para o janelamento de avaliação do medidor de qualidade de foco do método Shape From Focus. Apesar de diferentes trabalhos sobre este tema utilizarem diversas variações do janelamento de avaliação, o suporte adaptativo pode fornecer uma alternativa para encontrar a estabilidade e confiança na obtenção do mapa de profundidade, limitando o erro introduzido por interferências globais.
There are many techniques for reconstructing three-dimensional objects in a computer, some are used in controlled environments and others in environments that do not require great precision. Shape From Focus is one of the well-known method that uses a stack of cropped photographs with different focal settings to reconstruct a fairly accurate depth map. This method obtains greater stability in the reconstruction of very small objects or microscopes, but has recently been used for reconstruction of environments. As a result, the Shape From Focus reconstruction model began to process greater amounts of interference in the photo stack, such as lens distortion, increased depth of field, zoom effect, among others, as well as noise Introduced by the environment. This work analyzes the effects of the adaptive support for the evaluation window of the focus quality meter of the Shape From Focus method. Although different works on this theme use several variations of the evaluation window, the adaptive support can provide an alternative to find the stability and confidence in obtaining the depth map, limiting the error introduced by global interferences.
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Ljung, Carl, and Eric Smith. "Robust Manufacturing of Composite Parts: Analysis of Spring-in Shape Distortions." Thesis, KTH, Lättkonstruktioner, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-203820.
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The present thesis investigates the development of shape distortion in mass produced composite components. More specifically the spring-in of corners manufactured using Resin Transfer Moulding, RTM was studied. The investigation was performed experimentally after theoretically ruling out several possible factors and parameters. A series of L-shaped brackets were manufactured and the influence of thickness and corner radius was assessed. Partly in contradiction to some previously published studies, the presented results suggest that spring-in of L-brackets produced using RTM, during fully geometrically constrained conditions and isothermal cure, are influenced by both thickness and corner radius.I detta examensarbete studeras hur formförändringar uppstår under massproduktion av komponenter utav kompositmaterial. Mer specifikt undersökts hur vinklar tillverkade genom Resin Transfer Moulding, RTM, fjädrar in efter det att de tas ur formen. Arbetet inleds med en litteraturstudie där en mängd olika faktorer som kan påverka in-fjädring studeras varefter experiment genomförs där flertalet av dessa undvikes. En serie L-formade vinklar tillverkas och inverkan av laminattjocklek samt vinkelradie undersöks. Delvis i motsats till vad som visats i tidigare studier, visar dessa resultat att in-fjädringen påverkas av både materialets tjocklek och radien hos L-vinklarna. Dessa härdades isotermt och var geometriskt begränsade av sitt formverktyg.
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Borwankar, Raunak. "Optical Non-Destructive Surface Inspection and Automatic Classification of Cast Iron Automotive Part." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-theses/1229.
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Over the past decade, research into computer vision has proliferated with the goal to incorporate artificial intelligence into a wide range of applications. These applications can be as sophisticated as intelligent assistants in smartphones and self-driving cars or as mundane as text and face recognition. While most of these applications are software based, they represent unique challenges when it comes to industrial implementation. This thesis concentrates on an optical non-destructive testing (NDT) and automatic classification methodology using customized image processing techniques. In contrast to conventional spatial analyses, which are highly susceptible to noise and human perception, our proposed transform domain approach provides a high degree of robustness and flexibility in feature selection and hence a better classification efficiency. Our presented algorithm classifies the Part-Under-Test (PUT) into two bins of either acceptable or faulty using transform domain techniques in conjunction with a classifier. Because the classification is critically dependent on the features extracted from these images, a sophisticated scalable database was created. This thesis applies transform domain techniques such as Discrete Wavelet Transform (DWT) and Rotated Wavelet Transform (RWT) for feature extraction and then classifies the PUT based on those features. Although, this approach achieves promising classification efficiency, it does not meet industrial standards. It was concluded that in order to achieve those standards, the effect of emissivity fluctuations of the PUT should be negated. The research was then extended to apply an image acquisition algorithm in the form of shape from polarization. The approach exploits the partially linearly polarization of reflected light from the PUT surface. It was observed that this method could not only detect if the PUT is faulty or fault free, but also highlight the locations of the flaws.
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Chou, Sophie Beiying. "Reading between the (party) lines : how political news is seen and shared." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107500.
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Thesis: S.M., Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2016.This 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 107-110).
This thesis uses mixed methods and datasets to explore how political news is perceived and shared within and across party lines in the context of the 2016 US presidential elections. We begin by examining the impact of political context versus article content on the reader through a crowdsourced study, and follow up with a large scale analysis of story sharing on the social platform Twitter to find cases where popularity transcends political affiliation. In Part One, we look at reader reactions. We investigate the question of trust in political news by performing a study online. We look at the impact of content features (reading level of the article) versus context clues (media brands) to find that political affiliation and brand outweigh all other aspects. In the second part of this thesis, we focus on reader actions. In particular, we look at how political news stories from the same time period are shared on the social media platform Twitter. As we found party loyalty and media brand perceptions to be significant influences on the reader's opinion of news, we are especially interested in examining emotional features that cause stories to become popular beyond political boundaries. Together, these two parts hope to form a more complete view of factors affecting and driving readers in an election cycle that is heavily influenced by media coverage, both traditional and new.
by Sophie Beiying Chou.
S.M.
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Glowinkowska, Mira. "Continuous Space : Transforming a Car Park Into a Co-House." Thesis, KTH, Arkitektur, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223391.
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The cohouse is a smarter type of housing, where we can find solutions through sharing. It combines the home with the social meeting place, resembling an indoor/outdoor fusion. My intention with this project is to create a housing that is unfinished, a continuous project. Where the residents are encouraged to try other ways of living. Where the rooms are not only made up by walls but also created by the bodies of people, forever changing and rearranged - a continuous space.
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Guterres, Carlos José Vaz. "Contributos para a sustentabilidade dos serviços partilhados : modelos organizacionais e determinantes da qualidade." Doctoral thesis, Instituto Superior de Economia e Gestão, 2018. http://hdl.handle.net/10400.5/15866.
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Doutoramento em GestãoOs serviços partilhados constituem um modelo desenvolvido a partir da prática de algumas organizações, que contou com o apoio de empresas de consultoria e só muito recentemente registou o interesse da comunidade académica. A presente investigação insere-se neste contexto, estudando este modelo nas várias áreas da gestão, com o objetivo de fornecer contributos válidos para a sustentabilidade do modelo de serviços partilhados nas organizações. A partir de uma fundamentação teórica, esta investigação foi conduzida para o estudo de um modelo de gestão adequado a cada caso e a identificação dos determinantes da qualidade para garantir a satisfação dos clientes, consideradas como as principais condições para garantir a sustentabilidade do modelo de serviços partilhados. A qualidade revelou ser um dos principais problemas com que se debatem as organizações, pelo que o segundo objetivo específico desta investigação pretendeu identificar, não só os determinantes da qualidade para assegurar a satisfação dos clientes dos Centros de Serviços Partilhados, como ainda a sua importância ao nível do modelo. As conclusões apontam no sentido de que não existem bons ou maus modelos, mas sim modelos que se encontram, ou não, adequados aos objetivos estratégicos de cada organização. Assim, a sustentabilidade do modelo não foi identificada como um processo evolutivo, mas pela sua adequabilidade aos objetivos da organização. Os resultados desta investigação vieram fornecer às organizações a indicação de um modelo adequado em função dos objetivos estratégicos, assim como a possibilidade de ajustar os seus modelos de gestão em função das expetativas dos clientes.
Shared services is a model developed from the practice of some organizations, which had the support of consulting firms, and only recently, the academic community became interested. This research fits into this context, since it studies this model in various areas of management, in order to provide valuable contributions to the sustainability of the shared services model in organizations. From a theoretical ground, this research was conducted to identify a suitable management model for each case and to identify the quality determinants to ensure customer satisfaction, considered as the main conditions to ensure the sustainability of the shared service model. The quality proved to be a major problem faced by the organizations, so the second specific objective of this investigation intended to identify not only the determinants of quality to ensure customer satisfaction of the Shared Services Center, as its importance in terms of the model. The findings point to the effect that there are neither good nor bad models, but models that are appropriate or not to the strategic objectives of each organization. Thus, the sustainability of the model was not identified as an evolutionary process, but for its suitability to the organization's goals. The results of this research provide organizations with the appointment of a suitable model to the objectives, as well as the ability to adjust their business models in line with customer expectations.
info:eu-repo/semantics/publishedVersion
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Ramírez, Neilson Juan Andrés. "Nuevo Método Shape From Shading para Extraer Información 3D de una Fotografía." Tesis, Universidad de Chile, 2009. http://www.repositorio.uchile.cl/handle/2250/102240.
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Rubinsztein-Dunlop, Halina, Andrew Forbes, M. V. Berry, M. R. Dennis, David L. Andrews, Masud Mansuripur, Cornelia Denz, et al. "Roadmap on structured light (Parts 4 and 5)." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/622525.
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Shaw, Benjamin. "More than the sum of the parts : shared representations in collaborative design interaction." Thesis, Royal College of Art, 2007. http://researchonline.rca.ac.uk/1362/.
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This dissertation presents an inquiry into the roles played by persistent, shared external representations in design collaboration. It advances an understanding of the active participation of these representations—including drawings, models and prototypes—in the collective reasoning of design teams. Interaction was analyzed using a novel network formalization to portray the accomplishment of essential work in this context. A synthesis of analyses over different time scales provides the basis for a comprehensive notion of representational support for design interaction, and a diagnostic for problems that may arise with inadequate support and/or disparities of access and participation. Data were collected during working sessions of a leading, “real-time” concurrent design practice at NASA’s Jet Propulsion Laboratory, notable for accelerated performance and the use of technologically-advanced, shared representations. Fine-grained analysis of this activity offers insights to complement those obtained from laboratory studies of individual designers, ad-hoc groups, and organizationally-situated ethnographic accounts. A microanalytic technique was developed to assess dynamic interaction between participants and representations. The resulting, novel formalization of an actor-discourse network makes concepts derived from actor-network theory operational to understand the work accomplished through design interaction. Network visualization and structural metrics highlight patterns associated with productivity in the design process. On this basis, indicators for the quality of design conversation are proposed: these include the degree of participants’ engagement, the development of design discourse, the integration of representations and the consolidation of commitment to action. Specific roles and situational attributes of representations are identified that foster and sustain advances in collective design reasoning. The dissertation advances a view of design activity in terms of temporally-evolving constellations of issues and actors, in which representations act to stabilize and anchor expanding networks of commitment. Directions for further work include technical enhancement to network metrics and visualization, extension of the actor-discourse network formalization and further exploration of theoretical and practical issues pertaining to representational actors in social situations.
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Calabro, Angelina Louise Ulrich Pamela V. Connell Lenda Jo. "Analysis of pant pattern shapes for tween girls based on 3D body scans." Auburn, Ala, 2008. http://hdl.handle.net/10415/1515.
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Foucher, Yoann. "Mutations des zones d’activités commerciales suburbaines – Le renouvellement des entrées de ville : jeux d’acteurs et formes urbaines." Thesis, Montpellier 3, 2018. http://www.theses.fr/2018MON30025.
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Cette recherche questionne les stratégies d’acteurs publics-privés et les morphologies architecturales dans les projets de renouvellement des zones d’activités commerciales d’entrée de ville. L’analyse tente de révéler les freins au renouvellement urbain et s’appuie sur l’observation participante dans la Société d’Aménagement de l’Agglomération de Montpellier (SAAM) ainsi que des entretiens sur deux autres projets : «Pont de l’âne Monthieu » à St Etienne et « Château-Redon » à La Valette du Var. Ces cas français sont intéressants car rares à leur échelle d’intervention. Ils sont pilotés par des aménageurs publics (Société Publique Locale ou Etablissement Public d’Aménagement) associés à des promoteurs-investisseurs pour la création d’un nouveau site commercial.Le corpus de données permet de comprendre l’organisation des acteurs au sein des projets urbains : coalitions et oppositions entre les collectivités publiques, les commerçants d’hypermarchés ou de grandes surfaces spécialisées, les promoteurs, les propriétaires, et les associations. Les stratégies des acteurs publics et des promoteurs s’appuient sur des représentations différenciées de l’urbanité qui impactent la programmation et la conception architecturale.L’évolution morphologique des pôles commerciaux est complétée par d’autres cas en France et à l’étranger et montre l’hybridation des nouvelles centralités vers plus de mixité fonctionnelle.Les cas étudiés innovent parmi les projets de renouvellement en zone d’activités commerciales, mais leur spécificité questionne leur reproductibilité dans d’autres villes moyennes françaisesThis research will cross-examine strategies used by private and public sector identities in addition to architectural morphologies of town entrance business activity areas' rehabilitation projects. Our analysis will aim to reveal current obstacles to urban rehabilitation and will be relying on the participant observation method inside the structure of the Society d'Amenagement de Montpellier (SAAM) - Building Society of the Urban Agglomeration of Montpellier - as well as interviews relating to two other projects: "Pont de l'âne Monthieu" in St Etienne and "Château-Redon" in La Valette du Var. These French examples are as interesting as they are rare, considering the intervention scale. They are managed by public project managers (Local public companies or Public development agencies) and rely on promoter-investors to create a new commercial site.The data corpus allows us to understand how the main stakeholders interact and manage urban projects: coalitions and oppositions between public bodies, supermarkets or specialized retailers, sponsors, store owners and city-scale community groups.The basis of public sector leads and promoters' strategies take its roots in the discrepancy of representations of urbanism, impacting directly on how the architecture is scheduled and designed.Our analysis of the morphological evolution of commercial centres will be complemented by other case studies in France and abroad and will show the hybrid trends of new suburban commercial centres towards a more dense and functional diversity.Urban projects in our research will show a drift towards more innovation in the sector, however it is difficult to foresee whether their specificities could be recreated in other middle size French cities
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Wang, Tao-Chin Lin. "Part I: Dispersion versus absorption (DISPA) line shape analysis. Part II: Ion trajectories and excitation techniques in fourier transform ion cyclotron mass spectrometry /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487260135355759.
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Koskenniemi, Isak. "Preparing parts for Wire and Arc Additive Manufacturing (WAAM) and net-shape machining." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74296.
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WAAM is a relatively unexplored additive manufacturing method. Although research in this area has been performed for some years and the hardware is relatively cheap, the method is not widely used. As the name suggest, it uses wire and an arc welding equipment to deposit beads on top of each other to create a geometry. As WAAM is a near net-shape method, the parts must be machined to its net-shape after the beads has been deposited. BAE Systems Hägglunds AB are investigating the use of WAAM in an industrial robot cell and this Master’s thesis has been written with the purpose of enabling the use of WAAM for manufacturing parts at the company. This report investigates how a part is prepared for WAAM and near net-shape machining. A formula for approximating the cost of manufacturing a part is investigated. A software for slicing a .STL file for generating a toolpath is developed in Matlab. The software then exports the toolpath to a code that the robot can read. It can also generate a digital model of the work piece for net-shape machining through CATIA macro. A model for calculating the cost of using the WAAM-cell once the toolpath for a part is known is presented. The investigated areas and the developed software are then applied to a part, and the results of the report is discussed.
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Das, Abhishek. "Shape variation modelling, analysis and statistical control for assembly system with compliant parts." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/80049/.
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Modern competitive market demands frequent change in product variety, increased production volume and shorten product/process change over time. These market requirements point towards development of key enabling technologies (KETs) to shorten product and process development cycle, improved production quality and reduced time-to-launch. One of the critical prerequisite to develop the aforementioned KETs is efficient and accurate modelling of product and process dimensional errors. It is especially critical for assembly processes with compliant parts as used in automotive body, appliance or wing and fuselage assemblies. Currently, the assembly process is designed under the assumption of ideal (nominal) products and then check by using variation simulation analysis (VSA). However, the VSA simulations are oversimplified as they are unable to accurately model or predict the effects of geometric and dimensional variations of compliant parts, as well as variations of key characteristics related to fixturing and joining process. This results in product failures and/or reduced quality due to un-modelled interactions in assembly process. Therefore, modelling and prediction of the geometric shape errors of complex sheet metal parts are of tremendous importance for many industrial applications. Further, as production yield and product quality are determined for production volume of real parts, thus not only shape errors but also shape variation model is required for robust assembly system development. Currently, parts shape variation can be measured during production by using recently introduced non-contact gauges which are fast, in-line and can capture entire part surface information. However, current applications of non-contact scanners are limited to single part inspection or reverse engineering applications and cannot be used for monitoring and statistical process control of shape variation. Further, the product shape variation can be reduced through appropriate assembly fixture design. Current approaches for assembly fixture design seldom consider shape variation of production parts during assembly process which result in poor quality and yield. To address the aforementioned challenges, this thesis proposes the following two enablers focused on modelling of shape errors and shape variation of compliant parts applicable during assembly process design phase as well as production phase: (i) modelling and characterisation of shape errors of individual compliant part with capabilities to quantify fabrication errors at part level; and (ii) modelling and characterisation of shape variation of a batch of compliant parts with capabilities to quantify the shape variation at production level. The first enabler focuses on shape errors modelling and characterisation which includes developing a functional data analysis model for identification and characterisation of real part shape errors that can link design (CAD model) with manufacturing (shape errors). A new functional data analysis model, named Geometric Modal Analysis (GMA), is proposed to extract dominant shape error xixmodes from the fabricated part measurement data. This model is used to decompose shape errors of 3D sheet metal part into orthogonal shape error modes which can be used for product and process interactions. Further, the enabler can be used for statistical process control to monitor shape quality; fabrication process mapping and diagnosis; geometric dimensioning and tolerancing simulation with free form shape errors; or compact storage of shape information. The second enabler aims to model and characterise shape variation of a batch of compliant parts by extending the GMA approach. The developed functional model called Statistical Geometric Modal Analysis (SGMA) represents the statistical shape variation through modal characteristics and quantifies shape variation of a batch of sheet metal parts a single or a few composite parts. The composite part(s) represent major error modes induced by the production process. The SGMA model, further, can be utilised for assembly fixture optimisation, tolerance analysis and synthesis. Further, these two enablers can be applied for monitoring and reduction of shape variation from assembly process by developing: (a) efficient statistical process control technique (based on enabler ‘i’) to monitor part shape variation utilising the surface information captured using non-contact scanners; and (b) efficient assembly fixture layout optimisation technique (based on enabler ‘ii’) to obtain improved quality products considering shape variation of production parts. Therefore, this thesis proposes the following two applications: The first application focuses on statistical process control of part shape variation using surface data captured by in-process or off-line scanners as Cloud-of-Points (CoPs). The methodology involves obtaining reduced set of statistically uncorrelated and independent variables from CoPs (utilising GMA method) which are then used to develop integrated single bivariate T2-Q monitoring chart. The joint probability density estimation using non-parametric Kernel Density Estimator (KDE) has enhanced sensitivity to detect part shape variation. The control chart helps speedy detection of part shape errors including global or local shape defects. The second application determines optimal fixture layout considering production batch of compliant sheet metal parts. Fixtures control the position and orientation of parts in an assembly process and thus significantly contribute to process capability that determines production yield and product quality. A new approach is proposed to improve the probability of joining feasibility index by determining an N-2-1 fixture layout optimised for a production batch. The SGMA method has been utilised for fixture layout optimisation considering a batch of compliant sheet metal parts. All the above developed methodologies have been validated and verified with industrial case studies of automotive sheet metal door assembly process. Further, they are compared with state-of-the-art methodologies to highlight the boarder impact of the research work to meet the increasing market requirements such as improved in-line quality and increased productivity.
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Zechlinski, Gustavo Mata. "SHARED-GM: Arquitetura de Mem´oria Distribu´ıda para o Ambiente D-GM." Universidade Catolica de Pelotas, 2010. http://tede.ucpel.edu.br:8080/jspui/handle/tede/209.
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Previous issue date: 2010-09-11The recent advances in computer technology have increased the use of computer clusters for running applications which require a large computational effort, making this practice a strong tendency. Following this tendency, the D-GM (Geometric Distributed- Machine) environment is a tool, composed by two software modules, VPE-GM (Visual Programming Environment for Geometric Machine) and VirD-GM (Virtual Distributed Geometric Machine), whose goals are the development of applications of the scientific computation applying visual programming and parallel and/or distributed execution, respectively. The core of the D-GM environment is based on the Geometric Machine (GM Model), which is an abstract machine model for parallel and/or concurrent computations, whose definitions cover the existing parallels to process executions. The main contribution of this work is the formalization and development of a distributed memory for the D-GM environment, designing, modeling and constructing the integration between such environment and a distributed shared memory (DSM) system. Therefore, it aims at obtaining a better execution dynamic with major functionality and possibly, an increase in performance in the D-GM execution applications. This integration, whose objective is to supply a shared distributed memory module to the D-GM environment, is called ShareD-GM environment. Based on the study of DSM softwares implementations, mainly on their characteristics which meet all the requirements to implement the distributed memory of the D-GM environment, this work considers the use of Terracotta system. This study highlights two facilities both present in Terracota: the portability and adaptability for distributed execution in a cluster of computers with no code modifications (codeless clustering). Besides these characteristics, one can observe that Terracotta does not make use of RMI (Remote Method Invocation) for communication among objects in a JAVA environment. From this point of view, one may also minimize the overhead of data serializations (marshalling) in network transmissions. In addition, the development of applications to evaluate the implementation of the architecture model provided by the ShareD-GM integration, as the algorithm Smith-Waterman and the Jacobi method, showed a shorter running time when compared to the previous VirD-GM execution module
O recente avanc¸o das tecnologias de computadores impulsionaram o uso de clusters de computadores para execuc¸ ao de aplicac¸ oes que exijam um grande esforc¸o computacional, tornando esta pr´atica uma forte tend encia atual. Acompanhando esta tend encia, o Ambiente D-GM (Distributed-Geometric Machine) constitui-se em uma ferramenta compreendendo dois m´odulos de software, VPE-GM (Visual Programming Environment for Geometric Machine) e VirD-GM (Virtual Distributed Geometric Machine), os quais objetivam o desenvolvimento de aplicac¸ oes da computac¸ ao cient´ıfica aplicando a programac¸ ao visual e a execuc¸ ao paralela e/ou distribu´ıda, respectivamente. O n´ucleo do Ambiente D-GM est´a fundamentado na M´aquina Geom´etrica (Geometric Machine-GM), um modelo de m´aquina abstrato para computac¸ oes paralelas e/ou concorrentes cujas definic¸ oes abrangem os paralelismos existentes para execuc¸ ao de processos. A principal contribuic¸ ao deste trabalho ´e a formalizac¸ ao e desenvolvimento de uma mem´oria distribu´ıda para o Ambiente D-GM atrav´es da concepc¸ ao, modelagem e construc¸ ao da integrac¸ ao entre o Ambiente D-GM e um sistema DSM (Distributes Shared Memory). Portanto, visando melhoria na din amica de execuc¸ ao com maior funcionalidade e, possivelmente, com melhor desempenho no ambiente D-GM. A esta integrac¸ ao, cujo objetivo ´e fornecer um modelo de mem´oria compartilhada distribu´ıda para o Ambiente D-GM, d´a-se o nome de ShareD-GM. Com base no estudo de implementac¸ oes em software de DSM e nas caracter´ısticas que atendem aos requisitos de implementac¸ ao da mem´oria distribu´ıda do Ambiente D-GM, este trabalho considera o uso do sistema Terracotta. Salientam-se duas facilidades apresentadas pelo Terracota: a portabilidade e a adaptabilidade para execuc¸ ao distribu´ıda em clusters de computadores com pouca ou at´e nenhuma modificac¸ ao no c´odigo (codeless clustering), as quais retornam grandes benef´ıcios quando da integrac¸ ao com aplicac¸ oes JAVA. Al´em disso, verifica-se o fato de que o Terracotta n ao utiliza RMI (Remote Method Invocation) para comunicac¸ ao entre os objetos em um Ambiente JAVA. Neste perspectiva, procura-se minimizar o overhead dos dados produzidos pelas serializac¸ oes (marshalling) nas transmiss oes via rede. P ode-se tamb´em comprovar durante o desenvolvimento de testes de avaliac¸ ao da implementac¸ ao da arquitetura proporcionada pela integrac¸ ao ShareD-GM, que a execuc¸ ao de aplicac¸ oes modeladas no Ambiente D-GM, como o algoritmo de Smith-Waterman e o m´etodo de Jacobi, apresentaram menor tempo de execuc¸ ao quando comparados com a implementac¸ ao anterior, no m´odulo VirD-GM de execuc¸ ao do Ambiente D-GM
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Freire, Sobrinho Paulo. "Utilização do active shape model para análise de imagens médicas: localização do pulmão de crianças em radiografias para auxiliar no diagnóstico de pneumonia." Universidade Federal de Goiás, 2017. http://repositorio.bc.ufg.br/tede/handle/tede/7316.
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Contextualization: Technologies like CAD systems, become ideal as a second opinion, that is, to work in partnership with the doctor. For example, PneumoCAD can be used to perform a diagnosis of absence or absence of pneumonia in children 1 to <5 years of age using X-ray radiographs. Problems: However, the use of PneumoCAD requires a region of interest, referring to the lungs, manually. Based on difficulty and difficulty, we sought a solution that was not found in any research, applied to radiographs, involving PneumoCAD, through the active model, having as a patient children between the ages of 1 and <5 years. Proposal: It is then proposed the use of the active model, associated with the technique developed and called nsAlterar in improvement to segmentation based on ns . Materials and Methods: Fifty-six “padrão ouro” radiographs were submitted to MATLAB, in 8 steps, through modified and improved algorithms, as well as implemented support tools, such as: As well as measures of similarity to investigate quantitatively , On an efficiency of all resources employed for the same purpose. Results: With this question, we obtained, after an analysis of the experiments, a taxon of hits for the right of spraying 75.61% and for the left one in 63.41%, in which nsAlterar promoted the improvement in the distributions, even if They were not segmented correctly, through approximations properly. Conclusions: Based on the active model associated with nsAlterar and other resources, it was possible to complement a functionality of the PneumoCAD system, through the use of segmentation in reais, thus contributing to a higher efficiency and better results.
Contextualização: As tecnologias como sistemas CAD, tornam-se ideais como segunda opinião, ou seja, para trabalhar em parceria com o médico. Por exemplo, o PneumoCAD pode ser utilizado para realização do diagnóstico de ausência ou não de pneumonia em crianças de 1 e < 5 anos de idade, através das radiografias de raios-X. Problemática: Entretanto, a utilização do PneumoCAD exige que uma região de interesse, referente aos pulmões, sejam determinadas manualmente. Baseado nesta exigência e dificuldade buscou-se alguma solução que não foi encontrada em nenhuma pesquisa, aplicada a radiografias, envolvendo o PneumoCAD, através do Active Shape Model, tendo como paciente crianças com idade entre 1 e < 5 anos. Proposta: É, então, proposto o uso do Active Shape Model, associado à técnica desenvolvida e denominada nsAlterar em melhora à segmentação baseada no ns . Materiais e Métodos: Foram submetidas, no MATLAB, 56 amostras de radiografias do “padrão-ouro”, em 8 etapas, através de algoritmos modificados e aperfei- çoados, além de ferramentas implementadas de apoio, como: para o treinamento a partir de exemplos; assim como as medidas de similaridades para buscar investigar, de maneira quantitativa, sobre a eficiência de todos os recursos empregados para o mesmo propósito. Resultados: Com isto, foi obtida, após a análise dos experimentos, a taxa de acertos para o pulmão direito em 75,61% e para o esquerdo em 63,41%, em que o nsAlterar promoveu o melhoramento nas distribuições, mesmo as que não foram segmentadas corretamente, através de aproximações de maneira adequada. Conclusões: A partir do Active Shape Model associado ao nsAlterar e demais recursos, foi possível complementar a funcionalidade do sistema PneumoCAD, através do uso da segmentação em situações reais, contribuindo, assim, para a obtenção de maior eficiência e de melhores resultados.
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Castro, Rúben João Rodrigues. "Gramáticas da forma como instrumento para a apresentação da imagem patrimonial." Master's thesis, Universidade de Lisboa, Faculdade de Arquitetura, 2018. http://hdl.handle.net/10400.5/17174.
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Dissertação de Mestrado Integrado em Arquitetura, com a especialização em Arquitetura apresentada na Faculdade de Arquitetura da Universidade de Lisboa para obtenção do grau de Mestre.Neste projeto tentamos utilizar as gramáticas da forma como uma ferramenta para o entendimento do património vernacular aljezurense, e a posterior utilização das mesmas para a reabilitação e crescimento sustentáveis da vila de Aljezur. Para tal é identificada uma gramática da situação existente, e a partir da qual posteriormente desenvolvemos duas gramáticas aptas à reabilitação de pré-existências e à construção de novas habitações. Propomo-nos a desenvolver assim um conjunto de recomendações para um eventual plano de salvaguarda, que proteja e permita o desenvolvimento da vila de Aljezur enquanto aglomerado em crescimento.
ABSTRACT: tool to understand Aljezur’s vernacular heritage, and the subsequent use of it for the sustainable rehabilitation and growth of Aljezur. First we identify a grammar for the current situation, and then, from this one develop two other grammars suitable for the rehabilitation of pre-existences and the construction of new houses. We propose to develop a set of recommendations for a possible safeguard plan, which will protect and allow the development of the village of Aljezur as a growing agglomeration.
N/A
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Devine, Christopher John. "Ideological Social Identity: How Psychological Attachment to Ideological Groups Shapes Political Attitudes and Behaviors." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1305968870.
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Koen, Hildegarde Suzanne. "Predictive policing in an endangered species context : combating rhino poaching in the Kruger National Park." Thesis, University of Pretoria, 2017. http://hdl.handle.net/2263/61301.
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Approximately three rhinos are poached daily in South Africa. Rhino poaching is a serious problem
that a ects not only the rhino population of South Africa, but also the rhino population of the world.
South Africa has the largest rhino population and of those rhinos the largest number can be found in
the Kruger National Park (KNP). The KNP has been hit the hardest by the poaching epidemic, losing
1,175 rhinos in 2015 alone. Two big challenges are the size of the park and the unknown locations
of both the poachers and new poaching events. The KNP is the size of a small country and there are
simply not enough rangers to patrol this area e ectively. A costly solution would be to employ more
rangers, but a proposed alternative is to reduce the search space and thus ensure that the rangers are
allocated to the high risk areas first. A mathematical model was developed in the form of a Bayesian
network (BN) to infer the most important factors contributing to poaching events and to model the
rhino poaching problem. This model can be used to predict the area in which a future poaching attack
could take place and thereby reduce the search area of rangers. The model also serves as a vehicle to
enhance the understanding of the problem and encourage reasoning and discussion amongst decision
makers. The map of the KNP is divided into cells and each cell is given a poaching probability, based
on the outcome of the BN. This probability map forms a heat map that can be shown to the control
centre and rangers can then be sent to the respective hotspots on the map. This is a proactive approach,
which is in stark contrast to the numerous reactive approaches attempted thus far. This is the first BN
modelling approach to the rhino poaching problem, and it is also the first BN application to wildlife
crime. Previous applications of BN have only gone so far as environmental modelling, but not wildlife
crimes. In this study the rhino poaching problem was shifted from a complex, ill-structured space to a
position where researchers can begin to address the underlying problems by using a causal model as the
vehicle for understanding the complex interplay between the factors a ecting poaching events.Ongeveer drie renosters word daagliks in Suid-Afrika gestroop. Renosterstroping is 'n ernstige probleem wat nie net die renosterbevolking van Suid-Afrika raak nie, maar ook die res van die wêreld. Suid-Afrika het die grootste renoster bevolking in die wêreld, en die grootste getal van dié renosters word in die Kruger Nasionale Park (KNP) aangetref. Die KNP word die ergste geraak deur die stropings epidemie en 1,175 renosters is in 2015 gestroop. Twee groot uitdagings is die grootte van die park, asook die onbekende posisies van beide die stropers en die nuwe stropingsaanvalle. Die KNP is die grootte van 'n klein land en daar is eenvoudig nie genoeg veldwagters om hierdie area e ektief te patrolleer nie. 'n Duur oplossing sou wees om meer veldwagters aan te stel, maar 'n alternatief is om die soekarea van die veldwagters te verklein en sodoende te verseker dat die veldwagters die hoë-risiko areas eerste, en meer gereeld, patrolleer. 'n Wiskundige model in die vorm van 'n Bayesiese netwerk (BN) is ontwikkel om die belangrikste faktore te bepaal wat bydra tot stropingsaanvalle en uiteindelik die probleem te modelleer. Hierdie model kan gebruik word om die area te voorspel waar 'n stropingsaanval moontlik kan plaasvind en die soekarea van die veldwagters te verminder. Dit dien ook as 'n kanaal om die begrip van die probleem te verbeter en redenasie en bespreking onder besluitnemers aan te moedig. Die kaart van die KNP word in selle verdeel en aan elke sel word 'n stropingswaarskynlikheid toegeken gebaseer op die uitkoms van die BN. Hierdie waarskynlikheidskaart vorm 'n "hittekaart" wat aan die kontrolesentrum gewys kan word, en veldwagters kan dan na die onderskeie responskolle op die kaart gestuur word. Hierdie pro-aktiewe benadering is in teenstelling met huidige reaktiewe benaderings. Hierdie is die eerste BN modellering benadering tot die renosterstropingsprobleem, en dit is ook die eerste BN toepassing tot natuurlewe-misdaad. Vorige toepassings van BNs het omgewingsmodellering aangespreek, maar nie natuurlewe-misdade nie. In hierdie studie word aangetoon hoe die renosterstropings probleem geskuif is vanaf 'n komplekse, swak gestruktureerde probleemruimte na 'n omgewing waar navorsers kan begin om die onderliggende probleme aan te spreek deur gebruik te maak van 'n kausale model as die voertuig van begrip om die komplekse wisselwerking tussen faktore wat 'n stropingsaanval beïnvloed, te verstaan.
Thesis (PhD)--University of Pretoria, 2017.
Electrical, Electronic and Computer Engineering
PhD
Unrestricted
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Echevarria, Gavidia Vannessa Alexandra. "Centro de Día y Residencia para el Adulto Mayor en San Borja." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/651602.
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El tema de mi tesis tiene como principal enfoque brindar calidad de vida al adulto mayor. Por ello, el tema que escogí es Centro de día y residencia para el adulto mayor, ya que este brindara la infraestructura y herramientas sociales para que el adulto mayor se pueda tener buena calidad de vida e insertarse en la comunidad.
La etapa de vida por la que está pasando un adulto mayor debe ser la más satisfactoria, ya que en su mayoría, son personas que se han pasado la vida criando a sus hijos y trabajando por lo cual es el momento para disfrutar de todos los logros, por eso mi proyecto busca darles un espacio físico donde puedan recibir la atención básica que necesitan en su día a día y darles una buena calidad de vida a través de actividades y espacios comunes.
En los últimos años la población adulto mayor a incrementando significativamente, proyectándose para el 2020 que el 20% de la población será mayor a 60 años (Inei, 2016). Habiendo dicho lo anterior podemos darnos cuenta que este es un problema real del que aún no hemos tomado la conciencia suficiente, ya que si bien se habla de lugares y programas específicos para el adulto mayor aún no hay infraestructura eficiente para ellos en los distritos de lima metropolitana, debido a ello el tema de mi tesis busca ayudar a adultos mayores e incentivar la vida activa y saludable de este publico.The theme of my thesis has as main focus to provide quality of life to the elderly, as in my opinion is a group of people who have not been taken seriously by society and are daily excluded from it. For this reason, the theme that I chose is the Day and Residence Center for the elderly, since it will provide the infrastructure and social tools so that the elderly can develop in their community and, most importantly, that they feel useful again and with a purpose. In recent years, the elderly population has increased significantly and this is increasing, projecting for 2020 that 20% of the population will be older than 60 years (Inei, 2016). Having said the above we can realize that this is a real problem that we have not yet taken sufficient consciousness, because although we talk about specific places and programs for the elderly there is still no efficient infrastructure for them in the districts of Lima metropolitan, because of this the theme of my thesis is transcendental since it will be able to help a group of older adults and encourage other districts to have a day and residence center to cover the needs that this public may have and give them a good quality of life.
Trabajo de suficiencia profesional
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Kreiter, Michael P. "Opting-in to Diversity: “Being in a group of people who are different is part of not being an a**hole”." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1491571690942078.
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Ferreira, Claudio de Castro 1989. "Preparação de fases estacionárias fluoradas para cromatografia líquida de alta eficiência em fase reversa." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250523.
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Orientador: Isabel Cristina Sales Fontes JardimDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química
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Resumo: Neste trabalho, prepararam-se fases estacionárias (FE) fluoradas capeadas para utilização em Cromatografia Líquida de Alta Eficiência em Fase Reversa (CLAE-FR). A preparação da FE consistiu na sorção do polímero poli(metil-3,3,3-trifluorproprilsiloxano) (PMTFS) sobre sílica, tipo B, com tamanho de partícula de 5 ?m, seguido de imobilização térmica a 226 oC, por 12 horas e extração com diclorometano, a fim de eliminar o polímero não aderido ao suporte. A FE imobilizada, Si(PMTFS), foi submetida à reação de capeamento com trimetilclorossilano e hexametildissilaxano, para a redução dos grupos silanóis que não foram recobertos pelo polímero. Testes físico-químicos e cromatográficos comprovaram a eficiência da imobilização do polímero e do capeamento. O desempenho cromatográfico da FE fluorada capeada, Si(PMTFS)ec, foi superior ao da não capeada e os testes de Tanaka e colaboradores demonstraram que o capeamento diminuiu a atividade silanofílica da FE e aumentou a sua hidrofobicidade. A FE Si(PMTFS)ec apresentou o mecanismo "U-shape", pois se observou o aumento da retenção de compostos básicos e polares em altas porcentagens do modificador orgânico na fase móvel. As FE de Si(PMTFS)ec apresentaram estabilidade química superior às FE não capeadas, porém, elas mostraram-se mais instáveis que as FE C8, C18 preparadas no grupo. Embora a estabilidade química à fase móvel em meio básica seja uma desvantagem, a mesma possui o mecanismo "U-shape" que pode ser utilizado para aumentar a retenção dos compostos básicos, sem o uso de condições drásticas de pH, além de ser uma FE mais apropriada quando se emprega o espectrômetro de massas, pois a alta concentração de solvente orgânico na fase móvel melhora a ionização dos analitos, aumentando as suas detectabilidades. A FE Si(PMTFS)ec constitui em uma alternativa bem sucedida para emprego em CLAE-FR, devido a sua capacidade em separar vários tipos de compostos
Abstract:
Abstract: In this work, end-capped fluorinated stationary phases (SP) for use in High-Performance Liquid Chromatography on Reversed Phase (RP-HPLC) were prepared. The preparation of the SP consisted in the sorption of the polymer poly(methyl-3,3,3-trifluorproprilsiloxane) (PMTFS) onto type B silica, with particle size of 5 µm, followed by thermal immobilization at 226 °C for 12 h and extraction with dichloromethane to eliminate the polymer that had not interacted with the support. The immobilized SP, Si (PMTFS), was subjected to an end-capping reaction to reduce the silanol groups that were not covered by the polymer. Physical-chemical and chromatographic tests were conducted to evaluate the efficiency of the immobilization of the polymer and of the end-capping reaction. The chromatographic performance of the end-capped fluorinated SP, Si (PMTFS)ec, was greater than that of the non-end-capped phase. The Tanaka tests showed a decrease in silanophilic activity and an increase in hydrophobicity. The Si (PMTFS)ec SP showed a U-shaped mechanism, because of the observed increase in retention of basic compounds at high percentages of the organic component in the mobile phase. The Si (PMTFS)ec SP showed superior chemical stability to non-end-capped SP, however, less stability than C8 and C-18 SP also prepared by the group. Although chemical stability in alkaline mobile phase is a disadvantage, it has a "U-shape" mechanism that can be used to increase the retention of basic compounds without the use of drastic conditions of pH, and is more appropriate for use with a mass spectrometer. Due to the high concentrations of organic solvent in the mobile phase the ionization of the analytes is better, increasing the detectability. The Si (PMTFS)ec SP can be used in RP-HPLC due to its ability to separate various types of compounds
Mestrado
Quimica Analitica
Mestre em Química
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Naïmi, Foad. "Approches scientifiques et technologiques du frittage et de l'assemblage de matériaux métalliques par SPS." Thesis, Dijon, 2013. http://www.theses.fr/2013DIJOS076/document.
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La technique de frittage flash (communément appelée Spark Plasma Sintering, SPS) suscite un engouement au niveau mondial. Ce procédé permet la densification de poudres à des vitesses généralement 10 à 100 fois plus élevées que celles des techniques de frittage traditionnelles. Il permet la synthèse de matériaux massifs innovants et originaux, à microstructures contrôlées, de formes complexes et de grandes dimensions. Cependant, la maîtrise du changement d’échelle et de l’homogénéité microstructurale des pièces obtenues par ce procédé nécessite une parfaite connaissance technique des équipements de frittage flash pour limiter notamment les gradients thermiques. La modélisation est une aide précieuse pour aboutir à l’amélioration de cette maîtrise. Une autre potentialité de cette technologie, l’assemblage de métaux, sans apport de matière, permet de répondre à des sollicitations industrielles pour lesquelles cette technique offre une solution alternative intéressante aux procédés d’assemblage actuels. Des aspects technologiques restent, toutefois, à maîtriser pour aller vers la réalisation d’assemblages de bonne qualitéThe flash sintering technique (commonly known as spark plasma sintering, SPS) generates a craze worldwide. This process allows a powder densification from speeds generally 10 to 100 times higher than those of the traditional sintering techniques. In addition, this allows the synthesis of innovative and original dense materials, with a controlled microstructure, complex shapes and, sometimes large sizes. However, the control of scaling and microstructure homogeneity of parts obtained by such a process requires a perfect knowledge of technical equipment including flash sintering to reduce thermal gradients. Modeling is a valuable aid to achieve the improvement of its control. Another potentiality of this technology, the welding of metal without matter, throught industrial demands offers an attractive alternative method to classical welding methods. Technological aspects remain, however, to master to go towards achieving good multi-materials
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Hart, James R. "Enhancing a regular discipline of common prayer at Grace Episcopal Church in Orange Park, FL through the employment of shared musical leadership." Theological Research Exchange Network (TREN), 2002. http://www.tren.com.
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Rosa, Prisciane Raupp da. "Uber : de onde viemos, onde estamos e para onde vamos?" reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/168659.
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A economia compartilhada é um sistema econômico baseado no compartilhamento de bens subutilizados, de forma gratuita ou por uma taxa. Com os adventos da internet, smartphones e Gps surgiram as plataformas digitais que se baseiam nesse conceito, em que se faz emergir a necessidade da compreensão de sua relação com mercados two-side. Tal expansão atingiu diversos setores da economia, e, ainda, criou nova demanda, como a plataforma Uber, o que, no entanto, gerou distúrbios no setor de táxis, tradicionalmente regulamentado e com ineficiências mundialmente reconhecidas. Dessa forma, o objetivo dessa dissertação é entender o que são as plataformas digitais e analisar o caso especifico da empresa Uber, apresentando quais os principais fatores que permitiram que esse tipo de empresa surgisse; onde estamos, definindo o que é efetivamente a Uber e os serviços por ela prestado, abordando quais os ganhos de bem-estar proporcionados (excedente do consumidor) e problemas de regulamentação enfrentados; e para onde iremos, prospectando um caminho para a economia compartilhada a respeito das plataformas digitais em mercados two-side.Shared economy is an economic system based on the share of underutilized goods free of charge or for a fee. With the advent of the internet, the digital platforms based on this concept have been developed, emerging the need of understanding its relationship with two-side markets. This expansion has reached various sectors of the economy, as well as created new demand, such as the Uber platform, which ,however, has generated disturbances in the taxi sector, traditionally regulated with its worldwide recognised inefficiencies. Thus, the goal of this dissertation is to understand what the digital platforms are and to analyse the specific case of Uber company, showing the main factors which allowed this type of business to arise; where we are, defining what Uber effectively is and the services provided by it, addressing the welfare gains provided (consumer surplus) and regulatory problems faced; and where we go, prospecting a path for the shared economy regarding the digital platforms in two-side markets.
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Gámez, Martínez Juan Luis. "ANÁLISIS DE LA DEFORMACIÓN EN LA INYECCIÓN DE TERMOPLÁSTICOS BAJO VARIABLES DE FORMA DE LA PIEZA MEDIANTE RED NEURONAL Y SUPERFICIES RESPUESTA." Doctoral thesis, Universitat Politècnica de València, 2014. http://hdl.handle.net/10251/39350.
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La gran parte de productos de consumo contienen partes realizadas a través del proceso de inyección de termoplásticos, esto constata la importancia de este proceso de conformado con respecto a otros procesos de transformación de plástico. La minimización de los costes para ser más competitivos así como la eliminación o reducción de defectos en las piezas inyectadas, han sido los motivos principales para controlar el proceso a través de la optimización de las variables que entran en juego en este proceso, es por ello que se han realizado numerosos estudios referentes a obtener las relaciones existentes entre las variables del proceso y los aspectos de rentabilidad, estética y defectología de las piezas inyectadas. Modelizar dichas relaciones a través de algoritmos matemáticos con el fin de optimizar los resultados obtenidos y predecir el estado final de las piezas inyectadas han sido los objetivos de la mayoría de estudios.
Uno de los efectos intrínsecos a la inyección es la deformación de la pieza, esta deformación tiene lugar debido a distintos factores que intervienen en el diseño del proceso en su conjunto, diferencias en la contracción, diferencias en la refrigeración, las esquinas de la pieza, la orientación molecular, etc son elementos condicionantes de la deformación que se han estudiado en infinidad de artículos, en esta divulgación científica se estudiará la deformación bajo aspectos dimensionales de la pieza con la finalidad de intentar descubrir y optimizar las condiciones de entrada que en este caso serían las dimensiones de la pieza a través de la observación y modelización de las variables de salida que seria la deformación.
Y la pregunta que nos realizamos es ¿Cómo varían las deformaciones modificando las dimensiones de la pieza? ¿Cuáles son las dimensiones de la pieza a estudio que minimizan los efectos negativos de la deformación? ¿se puede predecir la deformación que obtendremos en una pieza solo con las dimensiones de una pieza?
A todas estas preguntas intentamos dar respuesta en el estudio siguiente.Gámez Martínez, JL. (2014). ANÁLISIS DE LA DEFORMACIÓN EN LA INYECCIÓN DE TERMOPLÁSTICOS BAJO VARIABLES DE FORMA DE LA PIEZA MEDIANTE RED NEURONAL Y SUPERFICIES RESPUESTA [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/39350
TESIS
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Moraes, Rodrigo Agostini de. "ABC da arquitetura. Fundamentos conceituais para uma gramática de projeto." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/16/16138/tde-16022017-105213/.
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Considerando-se os design methods ou os métodos de projetação arquitetônica disponíveis, a presente dissertação aborda as gramáticas da forma (shape grammars) como sistema de simulação, geração e otimização de formas. Essas gramáticas podem combinar recursos descritivos e prescritivos para a solução de problemas de projeto, principalmente por meio da geração de tipos, padrões e famílias de projeto, destinados aos contextos do design industrial e da produção arquitetônica pré-fabricada. Particularmente, o manejo de gramáticas de projeto podem qualificar projetos, cujos programas envolvam uma reprodução em escala, em que se faz necessário criar variedade, flexibilidade e versatilidade construtiva. Este objeto de estudo compõe o arcabouço teórico essencial para uma reflexão a respeito de implementações computacionais e para a automação do projeto arquitetônico. Utilizando a base teórica e a reflexão resultante, esta pesquisa procura um rebatimento prático dos fundamentos teórico-conceituais implícitos, por meio de uma análise da linguagem e da gramática de projeto presentes na arquitetura Industrializada do arquiteto João Filgueiras Lima, o Lelé, focalizando suas primeiras escolas pré-fabricadas, construidas no período de 1983 a 1993. Espera-se, com isso contribuir para que arquitetos e usuários criem e compartilhem repertórios de projeto e de processos criativos, por meio de plataformas computacionais mais amigáveis à projetação arquitetônica, as quais tomem como base, sobretudo, as especificidades desse campo do conhecimento.Considering the design methods and the architectural design methods available, this dissertation approaches shape grammars as a system of forms simulation, generation and optimization. These grammars can combine descriptive and prescriptive resources for solving project problems, mainly through the generation of project types, standards and families, in the contexts of industrial design and prefabricated architectural production. Particularly, the handling of project grammars can qualify projects whose programs involve a reproduction in scale, where variety, flexibility and constructive versatility are necessary. This object of study makes up the essential theoretical framework for a reflection on computational implementations and for the automation of an architectural project. Using the theoretical basis and the resulting reflection, this research aims at stimulating a practical debate on the implicit theoretical and conceptual foundations, through an analysis of the language and the project grammar present in architect João Filgueiras Lima (Lele)´s industrialized architecture, focusing on his first prefabricated schools, built during the period 1983-1993. We expect to offer some contribution to architects and users so they can create and share project repertoires and creative processes through friendlier computing platforms to architectural design, which should be based, mainly, on the particularities of this knowledge field.
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Fernandes, Fagner Lopes. "Uma extensão do método das densidades de força natural para elementos quadrangulares." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3144/tde-01092017-113828/.
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O Método das Densidades de Força (MDF), proposto primeiramente por Linkwitz (1971) e depois por Scheck (1974), é uma alternativa conveniente para encontrar configurações de redes de cabos e membranas, uma vez que fornece geometrias viáveis com uma única análise linear de equilíbrio. O Método das Densidades de Força Natural (MDFN) é uma extensão do MDF para busca de formas de estruturas de membranas, que preserva a linearidade do método original e supera suas dificuldades em lidar com malhas irregulares. Foi primeiramente sugerido por Pauletti em 2006, baseado no elemento triangular de membrana introduzido por Argyris em 1974. O Método tem sido aplicado com sucesso em vários projetos. O MDFN original requer o uso de malhas compostas exclusivamente por elementos triangulares. Esta dissertação apresenta uma extensão do método para elementos quadrangulares, considerando um elemento composto por quatro subelementos triangulares. Mesmo que a ideia básica seja muito simples, algumas dificuldades surgem do fato de que nesta abordagem, o elemento de quatro nós pode não conter todos os nós em um mesmo plano, especialmente no caso de superfícies anticlásticas, sendo que não existe um campo de tensões bem definido para o interior do elemento. O trabalho compara alguns resultados obtidos com malhas exclusivamente triangulares, como requerido pelo método original, com os resultados obtidos com o elemento quadrangular proposto, discutindo a forma de combinar as tensões dos subelementos triangulares para originar as tensões atuantes no elemento quadrangular. Os modelos obtidos no MDFN são inseridos no programa Ansys, e os resultados são comparados para analisar a viabilidade da solução proposta e dos resultados obtidos por meio desta.The Force Density Method (FDM), first proposed by Linkwitz(1971) and after by Scheck(1974), is a convenient alternative for finding configurations of cable nets and membranes, since it provides viable geometries in a single linear equilibrium analysis. The Natural Force Density Method (NFDM) is an extension of the FDM to the shape finding of membrane structures, which preserves the linearity of the original method and overcomes the difficulties of the original method to deal with irregular meshes. It was first suggested by Pauletti in 2006, based on a triangular membrane element introduced by Argyris in 1974. The method has been successfully applied to several design cases. The original NFDM required the use of meshes composed exclusively of triangular elements. This text presents an extension of the method to quadrangular elements, considering an equivalent assemblage of flat triangular elements. Even if the basic idea is very simple, some difficulties arise from the fact that in this approach, the quadrangular element can have a non-flat configuration, especially in the anticlastic shape, and there is not a know stress field into the interior of the element. The text compares several results obtained with fully triangulated meshes, as required by the original NFDM, to those obtained with the proposed quadrangular element, discussing the different strategies that have been explored to map stresses from the internal triangular mesh to the four nodes of the element. The models obtained in the NFDM are inserted in software Ansys and the results compared to approve the solution and the results obtained.
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Doerfler, Amy M. "Part I: Mass for Full Orchestra and SATB Chorus Part II: Joseph Funk's A Compilation of Genuine Church Music (1832): An Analysis of Music and Methods." Kent State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=kent1310584998.
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Anderson, Ricky D. "A parts classification and coding system utilizing functional and shape characteristics in a matrix-code structure." Ohio : Ohio University, 1992. http://www.ohiolink.edu/etd/view.cgi?ohiou1171483811.
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