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Dissertations / Theses on the topic 'Geometrical drawing'
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1
Vigneron, Pierre Antoine Emile. "Algorithms for computing some geometric diagrams /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?COMP%202002%20VIGNER.
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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2002.Includes bibliographical references (leaves 100-105). Also available in electronic version. Access restricted to campus users.
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Stokes, Mark Richard. "Geometrical properties of strip produced by plasto-hydrodynamic drawing." Thesis, Sheffield Hallam University, 1994. http://shura.shu.ac.uk/20406/.
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A detailed investigation is carried out for the novel process of Plasto-hydrodynamically produced wide strip. In this process the conventional die is replaced by a pressure head with a rectangular hole. The internal geometry of the hole is shaped such that a convergent fluid flow is produced. This flow causes the production of hydrodynamic forces within the pressure head, namely hydrodynamic pressure and surface shear stresses. These forces are of sufficient magnitude that plastic deformation is induced within the working material. An in-depth theoretical analysis has been undertaken to establish the relevance of the geometrical parameters of the pressure head for the control of deformation performance. An extensive study of the solution algorithm for this type of plasto-hydrodynamic problem is made and modifications introduced to improve die dynamic response of the model. A new non-Newtonian model of the process has been developed using a power law type constitutive equation for the fluid behaviour. The modifications to the solution algorithm were also included in this new model. The plasto-hydrodynamic models developed during this work were subjected to numerical optimisation. The non-linear pattern search algorithm was utilised for this purpose. Correlations between the optimum geometrical form for the pressure head and process velocity were established. A study was made of the effect of varying the non-Newtonian parameters and the optimum pressure head geometry. A Computational Fluid Dynamic (CFD) analysis was made of the Hydrostatic assumption. This assumption allows major simplifications during the derivation of the models of the process. Its validity is established along with the impact of side leakage on the pressure field. An experimental programme was undertaken to provide data to establish a correlation between the predictions of process performance and an analysis of the output form of the strip produced by the process. The material used for the study was commercially available soft copper strip. The maximum reduction in area produced was 12% approximately.
3
Hauptmann, Marek, Sebastian Kaulfürst, and Jens-Peter Majschak. "Advances on Geometrical Limits in the Deep Drawing Process of Paperboard." NC State University, 2016. https://tud.qucosa.de/id/qucosa%3A30229.
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The geometrical limits of the deep drawing process of paper to advanced shapes are not known. This report examines the technological limits of convex elements of the base shape in relation to the drawing height and shows the material behavior in the bottom radius of 3D shapes with regard to special material properties. In the bottom radius, non-compressed wrinkles occurred due to the in-plane compression, but wrinkles were reduced by an increased blank holder force or tool temperatures and improved extensibility or in-plane compressive strain. The forming ratio during deep drawing (drawing height related to base diameter) was increased to a value of more than 1 by a blank holder force, which increased with the drawing height such that the initial blank holder force was reduced concurrently. Straight sections in the base shape reduced the risk for ruptures in the edge radii of rectangular shapes, producing a forming ratio in these radii of 2.5. The forming ratio was further supported by a pattern of creasing lines at the blanks with a radial orientation and a number near the expected maximum number of wrinkles. The spring-back at rectangular shapes mainly depended on the drawing height and edge radius.
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Kaplan, Craig S. "Computer graphics and geometric ornamental design /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/6887.
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Wu, Xiaobin. "Efficient, tight bounding volumes for subdivision surfaces." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0011460.
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Loop, Charles Teorell. "Generalized B-spline surfaces of arbitrary topological type /." Thesis, Connect to this title online; UW restricted, 1992. http://hdl.handle.net/1773/6888.
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Haxhi, Karen Kleinschmidt. "The euclidean and hyperbolic geometry underlying M.C. Escher's regular division designs /." View abstract, 1998. http://library.ctstateu.edu/ccsu%5Ftheses/1491.html.
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Thesis (M.S.) -- Central Connecticut State University, 1998.Thesis advisor: Dr. Jeffrey McGowan. "...in partial fulfillment of the requirements for the degree of Master of Science." Includes bibliographical references (leaves [78-79]).
8
Yeung, Lee-hung Albert, and 楊利雄. "The use of geometer's sketchpad to facilitate new learning experience in geometry." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B29401264.
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Branda, Ewan E. (Ewan Edward) 1964. "Drawing interfaces : building geometric models with hand-drawn sketches." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/64901.
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1998.Includes bibliographical references (p. 49-51).
Architects work on drawings and models, not buildings. Today, in many architectural practices, drawings and models are produced in digital format using Computer-aided Design (CAD) tools. Unquestionably, digital media have changed the way in which many architects perform their day to day activities. But these changes have been limited to the more prosaic aspects of practice. To be sure, CAD systems have made the daily operations of many design offices more efficient; nevertheless, they have been of little use - and indeed are often a hindrance - in situations where the task at hand is more conjectural and speculative in nature, as it is during the early stages of a project. Well-intentioned efforts to insinuate CAD into these aspects of practice have only served to reveal the incongruities between the demands of designer and the configuration of the available tools. One of the chief attributes of design practice is that it is action performed at a distance through the agency of representations. This fundamental trait implies that we have to understand how computers help architects describe buildings if we are to understand how they might help architects design buildings. As obvious as this claim might seem, CAD programs can be almost universally characterized by a tacit denigration of visual representation. In this thesis, I examine properties of design drawings that make them useful to architects. I go on to describe a computer program that I have written that allows a designer to build geometric models using freehand sketches. This program illustrates that it is possible to design a software tool in a way that profits from, rather than negates, the power of visual representations.
by Ewan E. Branda.
M.S.
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Alves, José Manuel Barbosa. "Concepção de interfaces gráficos e comunicação de informação a máquinas de comando numérico computadorizado da indústria de mobiliário." Master's thesis, Instituições portuguesas -- UP-Universidade do Porto -- -Faculdade de Arquitectura, 1997. http://dited.bn.pt:80/30265.
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MOREIRA, JOHANN SENRA. "CONSTRUCTION OF THE CONICS USING THE GEOMETRIC DRAWING AND CONCRETE INSTRUMENTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=33061@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE MESTRADO PROFISSIONAL EM MATEMÁTICA EM REDE NACIONAL
O presente trabalho tem como objetivo facilitar o estudo das cônicas e ainda despertar o interesse do aluno para o desenho geométrico. Será apresentado que as curvas cônicas estão em nosso dia a dia, não só como beleza estética, mas também provocando fenômenos físicos amplamente utilizado pela arquitetura e engenharia civil, como acústica e reflexão da luz. Utilizaremos instrumentos para desenhar curvas que despertem a curiosidade dos alunos e faremos uso das equações e lugares geométricos a fim de demostrar tais recursos. Pretende-se assim que ao adquirir tais conhecimentos o aluno aprimore seu entendimento matemático e amplie seu horizonte cultural.
The present research aims to facilitate the study of the conics and also to arouse the interest of the student for the geometric drawing. The conic curves will be presented not only as they are in our day to day as aesthetic beauty but also as responsible for the physical phenomena widely used by architecture and civil engineering as well as acoustics and reflection of light. We will use instruments to draw curves that arouse the curiosity of the students, making use of the equations and locus in order to demonstrate such resources. It is intended that the student acquire this knowledge, improving his mathematical understanding and broadening his cultural horizon.
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Ros, Lluís. "A kinematic-geometric approach to spatial interpretation of line drawings." Doctoral thesis, Universitat Politècnica de Catalunya, 2000. http://hdl.handle.net/10803/5932.
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This Thesis contributes with new algorithms for line drawing interpretation. A line drawing is a 2D diagram of vertices and straight edges aiming to depict a polyhedral 3D scene. Given one such drawing we usually want to first test whether it is a correct projection. If it is, then we wish to reconstruct all possible scenes it can depict. Otherwise, we attempt to correct the drawing so that it becomes reconstractable.Traditionally, the Machine Vision approach to these problems has been mainly algebraic. Although computer scientists have discovered graphical techniques like the reciprocal diagrams, these have not been fully exploited or sometimes left apart, arguing that they only provide necessary conditions for realizability. However, a careful investigation of related areas of Geometry reveals the existence of complete and purely geometric tools that, using just pencil and straightedge, are able to decide the correctness of certain families of drawings. A first goal of this Thesis has been to select one such tool, the so-called cross-section diagram, and extend its validity to a broader class of drawings; namely, those of polyhedral surfaces generated by scenes of opaque polyhedra.
At present, however, no general realizability test using pencil and straightedge alone has been devised for general drawings so that relying on algebraic methods seems unavoidable. A second goal of the Thesis has been to exploit a known mapping between spatial polyhedra and the instantaneous motions of an articulated mechanism. Based on this mapping, we give a concise realizability test that outperforms the most popular algebraic approach known so far, due to Sugihara: it is faster, numerically stable, straightforwardly implementable in floating-point arithmetic and yields a linear parameterization of all possible reconstructions of the drawing. Additionally, this gives a model of the Necker reversal phenomenon and, in some cases, it allows obtaining all concavity/convexity patterns of the edges, neither resorting to consistent labelling techniques, nor consulting junction dictionaries.
A correction module is usually necessary, since drawings with a general geometry are seldom correct. In practice, for example, if a drawing is got from a hand-made sketch or by filtering a real image, the coordinates of its vertices will seldom lie in the right places, and reconstruction will not be possible. The third goal of the Thesis has been to efficiently solve this problem. To this end, we have devised the first algorithm for line drawing correction that allows the simultaneous movement of all the vertices. This yields better solutions than existing approaches, which only allowed the displacement of a subset of the vertices, or failed to correct some combinatorial structures. Moreover, we have provided a second correction strategy that keeps the vertices fixed but alters the combinatorial structure.
The developed techniques find applications in the design of new man-machine interfaces for solid modeling, since they allow the reconstruction of 3D shapes from rough hand-made sketches.
13
Ros, Giralt Lluís. "A kinematic-geometric approach to spatial interpretation of line drawings." Doctoral thesis, Universitat Politècnica de Catalunya, 2000. http://hdl.handle.net/10803/5932.
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This Thesis contributes with new algorithms for line drawing interpretation. A line drawing is a 2D diagram of vertices and straight edges aiming to depict a polyhedral 3D scene. Given one such drawing we usually want to first test whether it is a correct projection. If it is, then we wish to reconstruct all possible scenes it can depict. Otherwise, we attempt to correct the drawing so that it becomes reconstractable.Traditionally, the Machine Vision approach to these problems has been mainly algebraic. Although computer scientists have discovered graphical techniques like the reciprocal diagrams, these have not been fully exploited or sometimes left apart, arguing that they only provide necessary conditions for realizability. However, a careful investigation of related areas of Geometry reveals the existence of complete and purely geometric tools that, using just pencil and straightedge, are able to decide the correctness of certain families of drawings. A first goal of this Thesis has been to select one such tool, the so-called cross-section diagram, and extend its validity to a broader class of drawings; namely, those of polyhedral surfaces generated by scenes of opaque polyhedra.At present, however, no general realizability test using pencil and straightedge alone has been devised for general drawings so that relying on algebraic methods seems unavoidable. A second goal of the Thesis has been to exploit a known mapping between spatial polyhedra and the instantaneous motions of an articulated mechanism. Based on this mapping, we give a concise realizability test that outperforms the most popular algebraic approach known so far, due to Sugihara: it is faster, numerically stable, straightforwardly implementable in floating-point arithmetic and yields a linear parameterization of all possible reconstructions of the drawing. Additionally, this gives a model of the Necker reversal phenomenon and, in some cases, it allows obtaining all concavity/convexity patterns of the edges, neither resorting to consistent labelling techniques, nor consulting junction dictionaries.A correction module is usually necessary, since drawings with a general geometry are seldom correct. In practice, for example, if a drawing is got from a hand-made sketch or by filtering a real image, the coordinates of its vertices will seldom lie in the right places, and reconstruction will not be possible. The third goal of the Thesis has been to efficiently solve this problem. To this end, we have devised the first algorithm for line drawing correction that allows the simultaneous movement of all the vertices. This yields better solutions than existing approaches, which only allowed the displacement of a subset of the vertices, or failed to correct some combinatorial structures. Moreover, we have provided a second correction strategy that keeps the vertices fixed but alters the combinatorial structure.The developed techniques find applications in the design of new man-machine interfaces for solid modeling, since they allow the reconstruction of 3D shapes from rough hand-made sketches.
14
余啓明 and Kai-ming Yu. "Dimensioning and tolerancing in geometric modelling." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B31232450.
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Radermacher, Marcel [Verfasser], and D. [Akademischer Betreuer] Wagner. "Geometric Graph Drawing Algorithms - Theory, Engineering and Experiments / Marcel Radermacher ; Betreuer: D. Wagner." Karlsruhe : KIT-Bibliothek, 2020. http://d-nb.info/1206646632/34.
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Moraes, Andréa Benício de. "A expressão gráfica em cursos de engenharia: estado da arte e principais tendências." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-14102002-120045/.
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A tecnologia CAD com suas vantagens incomparáveis ao desenho através dos instrumentos tradicionais provocou a necessidade da reestruturação nos currículos das diversas universidades, no que concerne aos conteúdos programáticos e metodologias utilizadas no ensino de Desenho. Este trabalho apresenta um levantamento e uma análise das abordagens de ensino da Expressão Gráfica adotado pelos diversos cursos de engenharia do nosso país e no exterior. Objetiva o mesmo, contribuir para a modernização do ensino do desenho com a integração da computação gráfica e o uso das novas tecnologias na formação de profissionais para um mercado de trabalho cada dia mais exigente e globalizado.The CAD technologies, with its incomparable advantages over the traditional drawing instruments has led the contents and the traditional teaching methodologies of Engineering Drawing inadequate, demanding a reformulation of the subject at several universities. This work present a survey and a analysis of the teaching approaches of Engineering Drawing adopted by several engineering courses of Brazil. It aims to contribute to the modernization of the teaching of the drawing by using new technologies in order to prepare the professionals for a more competitive market.
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Oliveira, Robinson Neres de. "Contribuições do desenho geométrico na apropriação de conceitos geométricos." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/152952.
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O presente trabalho aborda a contribuição do Desenho Geométrico e seus elementos para a apropriação de conceitos geométricos retomando sua utilização para que essa aprendizagem seja mais dinâmica, significativa e que ocorra a sua apropriação. Para isso, levamos em consideração as seguintes indagações: A ausência do Desenho Geométrico tem contribuído para dificultar a apropriação de conceitos geométricos? O Desenho Geométrico, quando desenvolvido com auxílio de instrumentos, contribui com a prática docente e com a qualidade da aprendizagem em Geometria? O objetivo deste trabalho é identificar a deficiência no ensino decorrente do fim do Desenho Geométrico como instrumento que auxilia o ensino da Geometria, defendendo o seu retorno nas atividades escolares, além de fazer uma retrospectiva do processo de sua desvalorização ao longo das épocas. Também, promover a reflexão sobre as dificuldades encontradas na sua aplicação nos dias atuais através do seu processo histórico, apontar sua contribuição como recurso facilitador do ensino da Geometria e, por fim, produzir uma Sequência Didática, produto educacional, utilizando o Desenho Geométrico, para a retomada de sua função perdida. Para este trabalho, utilizamos da pesquisa bibliográfica, do tipo descritiva, numa abordagem qualitativa e como instrumento de coleta de dados a observação qualitativa, tendo como referencial teórico autores Brasil (1998b), Freire (1959), Gravina (1996), Marmo (1974), Nacarato e Passos (2003), Pavanello (1993), Putkoni (1991a), Zuin (2000) entre outros autores pertinentes ao tema. O produto educacional da pesquisa é uma Sequência Didática que foi desenvolvida e aplicada numa sala de 6º ano de uma escola municipal do interior paulista com aproximadamente 25 alunos com idades entre 11 e 13 anos. As atividades foram inspiradas em construções geométricas de Carvalho (2008) e de Rezende e Queiroz (2000) e envolveram o uso dos instrumentos do Desenho Geométrico como o compasso, a régua, os esquadros e o transferidor para melhor compreensão da aprendizagem geométrica. Em posse dos dados coletados, através das observações e registros, foram feitas as discussões dos resultados, apresentando-se satisfatoriamente quanto à utilização do Desenho Geométrico na apropriação dos conceitos geométricos, gerando uma aprendizagem em Geometria mais relevante e consistente perante as atividades de construções geométricas. A Sequência Didática desenvolve conceitos geométricos por meio do recurso do Desenho Geométrico.
This research approaches the contribution of the Geometric Drawing and elements for the appropriation of geometric concepts resuming your use for learning become more dynamic, significant and that occurs appropriation. For this, consideration the questions: The absence of Geometric Drawing has contributed to hamper the appropriation of geometric concepts? The Geometric Drawing, when developed with the aid of instruments, contribute with the teaching practice and with the quality of learning in Geometry? The objective of this research is to identify the deficiency in teaching resulting from the end of the Geometric Drawing as an instrument that assists the teaching of Geometry, defending its return in school activities, as well as a retrospective of the process of its devaluation throughout the epochs. Also, to promote reflection on the difficulties found in its application in nowadays through its historical process, to point out its contribution as a facilitator of the teaching of Geometry and, finally, to produce a Didactic Sequence, educational product, using the Geometric Drawing, to the resumption of their lost function. For this research, it was used elements of a bibliographical research, the descriptive type, in a qualitative approach and as an instrument of data collection and qualitative observation, having as academic reference authors: Brazil (1998b), Freire (1959), Gravina (1996), Marmo (1974), Nacarato and Passos (2003), Pavanello (1993), Putkoni (1991a), Zuin (2000) among other authors pertinent to the theme. The educational product of the research is a Didactic Sequence that was developed and applied in a 6th grade in a school in the small city of São Paulo with approximately 25 students aged between 11 and 13 years. The activities were inspired by geometric constructions of Carvalho (2008) and Rezende and Queiroz (2000) and involved the use of instruments Geometric Drawing such as compass, ruler, squares and transferor for a better understanding of geometric learning. With the collected data, through the observations and records, the discussions of the results were made, presenting satisfactorily the use of the Geometric Design in the appropriation of the geometric concepts, generating a learning in Geometry more relevant and consistent before the activities of geometric constructions. The Didactic Sequence develops geometric concepts through the use of the Geometric Drawing.
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Rafla, Nabil H. "The good drawings D r of the complete graph K r /." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75756.
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This thesis treats some of the problems related to the good drawings D$ sb{ rm n}$ of the complete graph K$ sb{ rm n}$. The first of these problems is obtaining all the non-isomorphic good drawings D$ sb{ rm n}$ of K$ sb{ rm n}$. After conjecturing that any good drawing D$ sb{ rm n}$ of K$ sb{ rm n}$ has at least one crossing-free Hamiltonian Circuit, an algorithm generating all the non-isomorphic good drawings D$ sb{ rm n}$ of K$ sb{ rm n}$ is developed. The second problem, determining the existence of a rectilinear drawing D$ sb{ rm n}$ of K$ sb{ rm n}$ with a given set of crossings, is solved by finding a characteristic of the rectilinear drawings D$ sb{ rm n}$ of K$ sb{ rm n}$. An algorithm using this characteristic determines whether a given set of crossing defines a rectilinear drawing D$ sb{ rm n}$ of K$ sb{ rm n}$. The last problem, to generate all the non-isomorphic rectilinear drawings D$ sb{ rm n}$ of K$ sb{ rm n}$, is solved by an algorithm using a set of rectilinear drawings D$ sb{ rm n-1}$ of K$ sb{ rm n-1}$.
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Nayef, Nibal [Verfasser], and Thomas M. [Akademischer Betreuer] Breuel. "Geometric-based Symbol Spotting and Retrieval in Technical Line Drawings / Nibal Nayef. Betreuer: Thomas M. Breuel." Kaiserslautern : Technische Universität Kaiserslautern, 2013. http://d-nb.info/102998171X/34.
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Akleman, Ergun. "Pseudo-affine functions : a non-polynomial implicit function family to describe curves and sufaces." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/15409.
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Heap, Graham Stewart. "Geometric estimation of strains in car body panels." Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/32802.
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The thesis focuses on the manufacture of car body panels at Austin Rover and in particular the phenomenon of spring-back. After pressing of a shallow drawn panel its shape is often flatter than required. This loss of shape control corresponds to areas of small strains. The aim of the thesis is to describe the generation of a database of small strain information at discrete points on a drawn panel, which could be used in the numerical modelling of the drawing process.
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Ford, Edward. "Interpretations of marks from draughting tools in some Italian Renaissance drawings : evidence for the use of geometrical and numerical design systems." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248889.
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Silva, Luiz Carlos Teixeira. "Avaliação de métodos de ensino do desenho de observação na graduação de design : proposta de desenho por geometria, grade e desconstrução (GGD) e pontilhismo /." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/154897.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A presente pesquisa verificou se os problemas enfrentados por alguns alunos de curso superior de Design ao desenhar, podem ser solucionados ou amenizados por técnicas que melhoram a capacidade representativa no desenho de observação. Inicialmente, por meio de pesquisa bibliográfica, o desenho foi explorado como manifestação artística e ferramenta projetual, abordando seu conceito, taxonomia, ensino, sua contribuição para o Design e alguns dos problemas comuns que as pessoas enfrentam. Em seguida, por meio de pesquisa experimental, foi aplicada uma metodologia com os materiais para desenho de observação e de coleta de informações, utilizando duas técnicas na produção de desenhos lineares e tridimensionais. Essa pesquisa se destinou a contribuir com o desenho de observação e a forma como é ensinado, com foco especial em estudantes de Design com deficiência na prática do desenho e nos problemas ocorridos em disciplinas de desenho de observação. Os resultados indicaram melhoria significativa nos resultados dos desenhos com o emprego de duas técnicas auxiliadoras.
The present research sought to verified if the problems faced by some students of graduation in Design can be solved or ameliorated by techniques that improve the representative capacity in the drawing of observation. Initially, through a bibliographic research, the drawing was explored as an artistic manifestation and a project tool, approaching its concept, taxonomy, teaching, its contribution to Design and some of the common problems that people face. Then, through an experimental research, a methodology was applied with materials for observation design and information collection, using two techniques in the production of linear and three-dimensional drawings. This research was intended to contribute to the observation design and the way it is taught, with a special focus on Design students with a disability in the practice of drawing and the problems that have occurred in observation drawing discipline. The results indicated a significant improvement in the results of the drawings with the use of two auxiliary techniques.
88882.180475/2018-01
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Kratochvíl, Tomáš. "D1 Rekonstrukce mostu D1-212 Ostrovačice, příprava realizace stavby." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372065.
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The diploma thesis deals with preparation and realization of D1 reconstruction of D1-212 bridge in Ostrovačice. It is a motorway bridge that transfers traffic over road II / 386. The reconstruction will demolish the superstructure of bridge with bridge equipment and parts of the abutments and their new construction. The preparation of the project solves the engineering report, the block plan drawing, the financial and time schedule - by objects, the budget SO 201, the study of the implementation of the main construction technologys, the project of the site equipment, the design of the main building machines, the SO 201 time schedule, a desigh of the bill of quantities for structure, technical note for superstructure of a bridge and control and test plans. Part of the preparation of the building is the processing of the emergency plan.
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Barakat, Hanaa. "Training with positive and negative data samples, effects on a classifier for hand-drawn geometric shapes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ59360.pdf.
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Guimarães, Danielle Virginie Santos. "Do ponto à forma : a disciplina desenho no Atheneu Sergipense (1905-1930)." Universidade Federal de Sergipe, 2012. https://ri.ufs.br/handle/riufs/4739.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis paper will discuss the subject of Geometric Drawing in the Atheneu Sergipense School between 1905 and 1930. It also aims at analyzing the history of that subject, confronting the practices adopted in said institution with state and national regulations. In addition, it looks at where Geometric Drawing stands in the speech of the scholars who defended its presence in the curriculum of secondary school in Brazil at that time. In order to that, the research was conducted based on the methodological principles of Cultural History and on theorists of the History of School Subjects, also taking into consideration categories referring to School Culture and Art Education History. Documental sources included: national and state regulation books, minutes from the Atheneu Sergipense Congregation, administrative mail, press publications, students reports, and material requests for Geometric Drawing classes, as well as a set of plate models with images used in exercise handouts in Geometric Drawing classes. Since this is a paper on the History of School Subjects, the analysis hereby carried out ponders on the legislation, the pedagogical ideas which contributed to the development of such legislation, the teachers, and the teaching practices. The historical analysis of the subject of Geometric Drawing in Atheneu Sergipense resulted in the realization of the geometric character of that class; in the understanding of the measures taken for maintaining it in the secondary school curriculum; and in the comprehension as to how the constant regulatory changes affected Geometric Drawing in the school environment and the fundamental damages caused by such alterations, especially their effects on the status of the Geometric Drawing teacher.
Este estudo tem por objeto a disciplina Desenho no Atheneu Sergipense, entre os anos de 1905 e 1930. Objetiva-se, por meio deste, analisar a história da disciplina, atrelando as práticas desenvolvidas na instituição com as previsões legais em níveis nacional e estadual, bem como localizar o Desenho no discurso dos intelectuais que defendiam sua presença na educação secundária do Brasil no período. Para tanto, a pesquisa foi realizada com base nos pressupostos metodológicos da História Cultural e teóricos da História das Disciplinas Escolares, com a observação de categorias referentes aos campos da Cultura Escolar e da História da Educação Artística. As fontes documentais utilizadas foram: legislações nacionais e estaduais, atas da Congregação do Atheneu Sergipense, correspondências administrativas, publicações na imprensa, relatórios administrativos, boletins e solicitações de materiais para aulas de desenho, além de um conjunto de modelos no formato de lâminas, contendo imagens utilizadas nas cópias das aulas de Desenho. Sendo este um trabalho de História das Disciplinas Escolares, a análise aqui empreendida volta-se para a legislação, as ideias pedagógicas que atuaram sobre a elaboração desta legislação, os docentes e as práticas do ensino. Resultaram da análise histórica do Desenho no Atheneu Sergipense: a percepção do caráter geométrico da disciplina; o conhecimento das medidas tomadas para a sua manutenção no curso secundário; o entendimento de como as constantes mudanças legais atingiram o Desenho no ambiente escolar e os prejuízos fundamentais causados por essas alterações, sobretudo seus reflexos no status do professor de Desenho.
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Vieira, Andréa Aparecida. "Tecnologias utilizadas na formação de professores nas disciplinas de geometria e desenho geométrico na Universidade Federal de Juiz de Fora entre 1980 e 2010: enfoque histórico e epistemológico." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/6149.
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A presente pesquisa tem por objetivo estudar, do ponto de vista histórico e epistemológico, a presença das Tecnologias na trajetória das disciplinas de Geometria e de Desenho Geométrico integrantes da formação de professores que lecionam Matemática. O período da investigação, 1980 a 2010, teve influência do Movimento da Matemática Moderna (ocorrido no Brasil nas décadas de 1960 e 1970) que marcou não só a formação dos professores, mas a forma como as disciplinas de Geometria e de Desenho Geométrico se delinearam ao longo do tempo. Além disso, influenciou as determinações oficiais e as práticas nos cursos de formação, seja dos professores para os anos iniciais, seja dos professores específicos para disciplina de Matemática. A metodologia escolhida para esta pesquisa de forma a contribuir na proposta deste projeto seguiu os preceitos de Bogdan e Biklen (1994) em uma pesquisa qualitativa ao proceder no estudo de softwares e outras tecnologias que foram utilizadas no ensino dessas disciplinas no decorrer do período de investigação e entrevistas com professores que já lecionaram essas disciplinas no período em questão. Além disso, foi utilizado o enfoque histórico epistemológico na pesquisa em documentos, livros, e ementas de modo a encontrar vestígios da utilização das tecnologias nas disciplinas Geometria e Desenho Geométrico. Os resultados apontam que a abordagem de utilização das tecnologias educacionais tem se tornado cada vez mais frequente no decorrer do tempo, porém, há uma certa insegurança por parte de alguns professores em utilizar meios tecnológicos com seus alunos. E através de análise de ementas e livros nota-se que nem sempre a utilização de tecnologias fica evidente.
The present research aims to study, from a historical and epistemological point of view, the presence of Technologies in the trajectory of the subjects of Geometry and Geometric Drawing, which are part of the training of teachers who teach mathematics. The period of research, from 1980 to 2010, was influenced by the Modern Mathematics Movement (which occurred in Brazil in the 1960s and 1970s), which marked not only the teacher training, but the way in which the subjects of Geometry and Geometric Drawing were delineated over time. In addition, it influenced the official determinations and practices in the training courses, either of the teachers for the initial years, or of the specific teachers for Mathematics discipline. The methodology chosen for this research in order to contribute to the proposal of this project followed the precepts of Bogdan and Biklen (1994) in a qualitative research when proceeding in the study of software and other technologies that were used in the teaching of these disciplines during the period of investigation and interviews with teachers who have taught these subjects in the period in question. In addition, the epistemological historical approach was used in research in documents, books, and menus in order to find traces of the use of technologies in the subjects Geometry and Geometric Drawing. The results indicate that the approach to the use of educational technologies has become more and more frequent over time, however, there is a certain insecurity on the part of some teachers to use technological means with their students. And through analysis of menus and books it is noted that not always the use of technologies is evident.
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Gomes, Gleyce Cruz da Silva. "Atratores de desenho." Universidade do Estado de Santa Catarina, 2013. http://tede.udesc.br/handle/handle/686.
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This research in artistic processes has three series of drawings, developed as part of my production during the last two years of the Master s degree as object of study. The research is based on the discursive terrain of artist s writing and presents itself as a space-work-research: primarily expositive space in printed form. For the construction of the concept of Drawing Attractors, I approach its definition in physics, which is the set of dynamic behaviors and phenomena in continuous and chaotic fluctuation that occur within a system. I signal this concept by the drawing of a rings balance as seen in the video image Limbo (by Cao Guimarães) which to rotate, oscillate in a chaotic and poetic fluctuation in the density of the drawing. Each of the three chapters addresses one of the series in their different densities: rarefied drawings occupy the Spaces of contention, liquid drawings flow by the Abysses and seven seas and the amorphous soundness of Drawing-words exist only in the opacity of this research. Some references are important in poetic dialogues, especially with the artists: Diego Rayck, Raquel Stolf, Mira Schendel, José Leonilson, Francis Alÿs, Mel Bochner, Robert Smithson and Sol Lewitt. The specific research on the writings of artists organized by Aline Dias, Gloria Ferreira and Cecilia Cotrim, as well as the research into printed exhibition spaces by Regina Melim. Some writers were fundamental to this work through literary works: Moby Dick by Herman Melville, Lezioni americane: Sei proposte per il prossimo millennio by Italo Calvino, Cujo by Nuno Ramos and Espèces d espaces by Georges Perec. Some theoretical points are developed from the writings of the curators Emma Dexter, Briony Fer and Luis Pérez-Oramas
Esta pesquisa em processos artísticos tem como objeto de estudo três séries de desenhos, desenvolvidas como parte de minha produção durante os dois últimos anos do mestrado. A pesquisa assenta-se no terreno discursivo da escrita de artista e apresenta-se como um espaço-obra-pesquisa: espaço primordialmente expositivo em formato impresso. Para a construção do conceito dos atratores de desenho, aproximo-me de sua definição na física, que consiste no conjunto de comportamentos e fenômenos dinâmicos, em flutuação contínua e caótica, que ocorrem dentro de um sistema. Sinalizo este conceito por meio do desenho de um balanço de argolas imagem observada no vídeo Limbo (de Cao Guimarães) que ao girar, oscila em uma flutuação caótica e poética na densidade do desenho. Cada um dos três capítulos aborda uma das séries em suas diferentes densidades: desenhos rarefeitos ocupam os Espaços de contenção, desenhos líquidos escorrem pelos Abismos e sete mares e a solidez amorfa das Palavras-desenho existem somente na opacidade desta pesquisa. Algumas referências são importantes nas interlocuções poéticas, em especial com os artistas:, Diego Rayck, Raquel Stolf, Mira Schendel, José Leonilson, Francis Alÿs, Mel Bochner, Robert Smithson e Sol Lewitt. As pesquisas específicas sobre escritos de artistas organizadas por Aline Dias, Glória Ferreira e Cecília Cotrim, assim como a pesquisa sobre espaços expositivos impressos por Regina Melim. Alguns escritores foram fundamentais com as obras literárias: Moby Dick de Herman Melville Seis propostas para o próximo milênio de Italo Calvino, Cujo de Nuno Ramos e Espécies de espaços de Georges Perec. Alguns pontos teóricos se desenvolvem a partir dos escritos dos curadores Emma Dexter, Briony Fer e Luis Pérez-Oramas
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Delfour, Serge. "Étude du répertoire des procédures de copie d'un dessin géométrique : approche développementale." Thesis, Montpellier 3, 2011. http://www.theses.fr/2011MON30071/document.
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Piaget, Inhelder et Szeminska (1948) ont analysé l’évolution avec l’âge de la copie d’un dessin géométrique angulaire composé de deux traits formant deux angles. Les résultats obtenus sont interprétés dans le modèle stadiste piagétien. En accord avec le modèle de choix de stratégies de Siegler (1996 ; 2007) et l’importance de la variabilité intra-individuelle (Lautrey, 2003), notre thèse reprend cette analyse en faisant l’hypothèse que chaque participant dispose de plusieurs procédures. Nous explorons le répertoire de procédures des enfants âgés de 6 à 12 ans et des adultes en proposant la copie dans plusieurs conditions expérimentales : copie spontanée, plusieurs copies successives en demandant au participant de copier autrement, copie avec l’utilisation d’un instrument spécifique. Nous tentons ensuite d’enrichir ce répertoire en montrant au participant une procédure qu’il n’a pas pu produite seul. Les résultats obtenus sont cohérents avec les modèles pluralistes du développement : dès 10 ans, les enfants disposent de plusieurs procédures pour copier le dessin. Cependant, la mise en évidence de la variabilité intra-individuelle dans cette tâche est contrainte par les conditions expérimentales et les connaissances instrumentales et conceptuelles du participant, notamment l’acquisition du concept d’anglePiaget, Inhelder and Szeminska (1948) analysed the age evolution of a geometric drawing two-lines composed and forming an angle. The results obtained are interpreted in the stadist piagetian model. In accordance with the strategy choice model (Siegler, 1996; 2007) and with the intra-individual variability importance (Lautrey, 2003), our thesis takes up this analysis with hypothesis that each participant have at his disposal several procedures. We explore the 6 to 12 aged children and adult procedural repertory by suggesting the copy in different experimental conditions: spontaneous copy, several copies in proceeding (in other way), copy with specific instrument use,. We also attempt to complete this repertory by showing the participant a procedure he could not have produced by himself. The obtained results are suitable with plural models of development: from the age of ten, the children have several strategies for copying the drawing. However, the intra-individual variability observed in this task is forced by experimental conditions and instrumental and conceptual knowledge of the participant, in particular the acquisition of angle concept
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Nivens, Ryan Andrew, Tara Carver Peters, and Jesse Nivens. "Views of Isometric Geometry." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/293.
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Chams, Dima. "La création artistico-scientifique de l’ornement géométrique aujourd’hui." Thesis, Pau, 2020. http://www.theses.fr/2020PAUU1088.
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L’ornement est considéré comme excédentaire à un objet existant et n’a pas de rôle essentiel dans la création artistique. À partir de cette hypothèse, cette recherche se propose de démontrer le contraire de ce consensus. En effet, l’objectif de cette thèse n’est pas de changer la définition de l’ornement, mais de l’orienter vers une autre vision et une nouvelle approche. Comment allons-nous procéder pour prouver ce nouveau point de vue ?Biologiquement, c’est en démontrant comment l’artiste, notamment l’artiste-chercheur, crée et comment son cerveau et ses sens réagissent à la création. Tout en considérant l’étude des connexions neuronales dans son corps, afin de déterminer la relation entre ces « connexions biologiques » et les « connexions artistiques » dans la conception de l’ornement géométrique. Dans le contexte de la conciliation entre la théorie et la pratique dans la recherche, cette analyse est développée en interrogeant des artistes, des scientifiques et des ingénieurs. Il s’agit de suivre et de vérifier, sur les chantiers, le développement des projets artistiques qui se rapportent à notre thèseOrnament is considered a mere surplus to an existing object and does not have an essential role in artistic creation. Based on this hypothesis, the research proposes to demonstrate the opposite of this consensus. Indeed, the purpose of this thesis is not to change the definition of ornament, but to orient it towards a different vision and a new approach.How are we going to propose this new point of view?Biologically, it is by demonstrating how the artist, especially the artist-researcher, creates and how his brain and senses react to the creation. By considering the study of neural connections in the artist’s body, we may determine the relationship between these ‘biological connections’ and ‘artistic connections’ in the design of geometric ornamentation. In the context of the reconciliation between theory and practice in research, this analysis will be conducted by interviewing artists, scientists and engineers. It will be useful to examine, in concrete examples, the development of artistic projects that relate to our thesis
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Wang, Jer-Ren, and 王哲仁. "Geometrical Feature Detection of Die and Mold Surfaces Using Stereo Vision and Top-View Drawing." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/32489282253978253155.
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"Iterative consolidation on unorganized point clouds and its application in design." 2011. http://library.cuhk.edu.hk/record=b5894790.
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Chan, Kwan Chung.Thesis (M.Phil.)--Chinese University of Hong Kong, 2011.
Includes bibliographical references (leaves 63-69).
Abstracts in English and Chinese.
Abstract --- p.v
Acknowledgements --- p.ix
List of Figures --- p.xiii
List of Tables --- p.xv
Chapter 1 --- Introduction --- p.1
Chapter 1.1 --- Main contributions --- p.4
Chapter 1.2 --- Overview --- p.4
Chapter 2 --- Related Work --- p.7
Chapter 2.1 --- Point cloud processing --- p.7
Chapter 2.2 --- Model repairing --- p.9
Chapter 2.3 --- Deformation and reconstruction --- p.10
Chapter 3 --- Iterative Consolidation on Un-orientated Point Clouds --- p.11
Chapter 3.1 --- Algorithm overview --- p.12
Chapter 3.2 --- Down-sampling and outliers removal --- p.14
Chapter 3.2.1 --- Normal estimation --- p.14
Chapter 3.2.2 --- Down-sampling --- p.15
Chapter 3.2.3 --- Particle noise removal --- p.17
Chapter 3.3 --- APSS based repulsion --- p.19
Chapter 3.4 --- Refinement --- p.22
Chapter 3.4.1 --- Adaptive up-sampling --- p.22
Chapter 3.4.2 --- Selection of up-sampled points --- p.23
Chapter 3.4.3 --- Sample noise removal --- p.23
Chapter 3.5 --- Set constraints to sample points --- p.24
Chapter 4 --- Shape Modeling by Point Set --- p.27
Chapter 4.1 --- Principle of deformation --- p.27
Chapter 4.2 --- Selection --- p.29
Chapter 4.3 --- Stretching and compressing --- p.30
Chapter 4.4 --- Bending and twisting --- p.30
Chapter 4.5 --- Inserting points --- p.30
Chapter 5 --- Results and Discussion --- p.37
Chapter 5.1 --- Program environment --- p.37
Chapter 5.2 --- Results of iterative consolidation on un-orientated points --- p.37
Chapter 5.3 --- Effect of our de-noising based on up-sampled points --- p.44
Chapter 6 --- Conclusions --- p.49
Chapter 6.1 --- Advantages --- p.49
Chapter 6.2 --- Factors affecting our algorithm --- p.50
Chapter 6.3 --- Possible future works --- p.51
Chapter 6.3.1 --- Improve on the quality of results --- p.51
Chapter 6.3.2 --- Reduce user input --- p.52
Chapter 6.3.3 --- Multi-thread computation --- p.52
Chapter A --- Finding Neighbors --- p.53
Chapter A.1 --- k-d Tree --- p.53
Chapter A.2 --- Octree --- p.54
Chapter A.3 --- Minimum spanning tree --- p.55
Chapter B --- Principle Component Analysis --- p.57
Chapter B.1 --- Principle component analysis --- p.57
Chapter C --- UI of the program --- p.59
Chapter C.1 --- User Interface --- p.59
Chapter D --- Publications --- p.61
Bibliography --- p.63
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Heinrich, Stefan, and Maik Berger. "Module based synthesis of a 14 bar deep drawing press considering kinetic criteria." 2018. https://monarch.qucosa.de/id/qucosa%3A33673.
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Die Entwicklung ebener Koppelgetriebe als nichtlinear übersetzende Antriebe in Verarbeitungsmaschinen stellt bis heute ein domänenübergreifendes Fachgebiet des Maschinenbaus dar. Auf der einen Seite gilt es, die Koppelgetriebe möglichst effizient in einer sich stetig wandelnden Softwarelandschaft zu synthetisieren (geometrische Maßfindung der Getriebeglieder) und auf der anderen Seite steigen die mechanischen Anforderungen. Aus diesem Grund besteht der Wunsch nach einer Vereinigung von Synthese und Analyse (kinematisch sowie kinetisch) in möglichst einer Programmumgebung. Basierend auf dem zum 18. ITI Symposium im Jahr 2015 vorgestellten modulbasierten Analyse-Synthese-Parameter-Abgleich (ASPA) ist in den vergangenen Jahren eine umfangreiche Bibliothek zur modulbasierten Synthese ebener Koppelgetriebe in SimulationX entstanden.
Der Beitrag zeigt am Beispiel eines 14-gliedrigen Pressenantriebes, welche neuen Möglichkeiten im Kontext von ASPA innerhalb von SimulationX durch diese Bibliothek entstanden sind. Basierend auf vorausgegangenen Arbeiten wurde erstmals die Möglichkeit der Synthese des Getriebes mittels Maßsynthese bei einer gleichzeitigen Beeinflussung der Gelenkkräfte und Bewegungsverläufe nachgewiesen. Dabei kam der Variantenassistent in SimulationX für die Ermittlung der Parametersensitivitäten zum Einsatz. Das Einbinden von parametrisierten Trägheitskenngrößen auf Basis vereinfachter Volumenkörper ermöglichte hierbei die Berücksichtigung der Bauteilmassen während der Synthese. Die Möglichkeit der gleichzeitigen Beurteilung kinematischer und kinetischer Kenngrößen während der Synthese ist an dieser Stelle ein besonderes Merkmal des Konzeptes ASPA.Developing nonlinear transmitting planar coupler linkages represents a domain enclosing field in mechanical engineering. On the one hand, there is a demand for an efficient layer synthesis (geometrical sizing of the links) and on the other hand, it is necessary to adapt to a constantly changing software environment. Thus, it is desired to crosslink the kinematical and kinetical synthesis and analysis of linkages within one software environment. Based on a paper about the Analysis-Synthesis-Parameter-Adjustment (ASPA), published at the 18th ITI Symposium in 2015, an extensive synthesis library has been developed in SimulationX. By the example of a 14 bar deep drawing press this paper reveals new opportunities that arise from the application of ASPA on the basis of the new library in SimulationX. Compared to prior papers on this particular press this paper, for the first time, presents a complete layer synthesis of this linkage regarding kinetic boundary conditions. In order to meet conditions, such as motion demands and joint forces, parameter sensitivities have been determined by applying the variants-wizard in SimulationX. Using parameterized mass properties on the basis of simplified solids has allowed the specification of link masses during the synthesis. The opportunity of simultaneously taking kinematic and kinetic characteristics during the layer synthesis into account defines the concept of ASPA.
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VLKOVÁ, Veronika. "Konvolut geometrických objektů, jako forma didaktické pomůcky (teoreticko-praktická práce)." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-153050.
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In the theoretical part of the thesis it is explained the requirements of teaching aids. These tools are designed for children in grammar art schools and high schools of art. The work deals with the methods of teaching that are closely connected with teaching aids, e. g. senses of perception, description and examples of tools, mediation curriculum, teaching lessons a logical construction, etc. The result is a set of variable methodological tools following learned.
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"A kinematic-geometric approach to spatial interpretation of line drawings." Universitat Politècnica de Catalunya, 2000. http://www.tesisenxarxa.net/TDX-0718101-080115/.
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Lin, Mei-Chien, and 林美倩. "Guiding Totally Blind Children to the Schematic Stage of Drawing by Using Image Geometric Teaching." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/92543563907605757939.
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碩士國立臺灣師範大學
設計學系
104
This study used a quasi-action research approach to study teaching drawing to totally blind children. The aim was to use the image geometric approach to guide totally blind, elementary school lower grade (grades 1–2) and middle grade (grades 3–4) children to the schematic stage of drawing. The study participants were two male elementary school children with congenital total blindness; one in the lower grade and the other in the middle grade. Before implementing the teaching, the profiles of the study participants were collected and a pretest was conducted to determine the initial skill levels of these two participants. The acquired information was also used to design the drawing lesson. After the teaching segment, a posttest was conducted, and the pre- and posttest results were compared. The objectives of this study were to (1) explore the effect of image geometric teaching on totally blind children; (2) compare differences in the drawing performances between children in the lower grade and middle grade; (3) develop effective drawing teaching strategies based on the experience gained from and the reflection on teaching totally blind children drawing by using the image geometric approach; and (4) develop the image geometric teaching procedure and curriculum suitable for totally blind children. The comparison of the pre- and posttest results revealed that the test participants substantially improved. Moreover, the test participants also developed abilities of the schematic drawing stage after being taught using the image geometric approach. The following four conclusions were reached based on the process of developing and improving the teaching method and the analysis of the study results. First, the image geographic teaching approach revealed the following effects on totally blind children. (1) It facilitated the demonstration of schematic stage skills in totally blind children in the lower and middle grades. (2) It enhanced the image recognition abilities of totally blind children in the lower and middle grades. (3) It taught totally blind children in the lower and middle grades an effective means to communicate and to express themselves. Second, according to an analysis of the drawing performance of the two children, both of them demonstrated the schematic stage drawing abilities. Furthermore, the study participant in the middle grade displayed richer schematic stage features and drew with more detail than the study participant in the lower grade. Third, the following teaching strategies are useful when applying the image geometric approach to teaching drawing to totally blind children in the lower and middle grades. (1) The instructor should use multiple teaching materials and tools to enhance the teaching of drawing. (2) The instructor should choose a teaching topic that matches the totally blind children’s ability and interest to make learning more effective. (3) The instructor should apply a flexible and open teaching model. Fourth, regarding the development and design of the image geometric teaching procedure and curricula, the study developed six lesson units based on the reviewed and revised teaching process. The key ability indicators for the schematic stage are geometric figures, the manual of symbols, and the space and composition. The major teaching steps in sequence are simplification, planarization, geometrization, and drawing.
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Mei, Shu, and 許湄. "An Action Research of Implementing Inquiry-based Instruction on the Geometric Unit of Ruler and Compass Drawing." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/15125321517539489575.
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碩士國立彰化師範大學
科學教育研究所
96
The goal of this dissertation is to implement inquiry-based instruction on the geometric unit of ruler and compass drawing, and to investigate how the instruction approach influences student’s geometry learning and reasoning ability. According to the research goal, the study was implemented in two 8th grade mathematics classrooms while research subjects were selected by convenience sampling. The researcher develops appropriate instruction activities by action research. Data were collected by classroom observations, video-taping, students’ worksheets and interviews, which were analyzed by qualitative methods. From the result of the research, the following features are found as follows: 1. induction is a good way to inspire the students to do inquiry-based activities; 2. inquiry-based class is composed of unceasingly accumulated dialogues within teacher and students as well as the peers; 3. when the inquiry-based issues are too difficult, the teacher has to build the learning scaffold for the students to let the inquiry-based activities go on; 4. while inquiring, the tool that is used will affect the discoveries of the students; 5. if the learning interests in the classroom have been motivated, the students will do the extended study automatically and keep on learning. The effects of inquiry-based activities on the student’s geometry learning and reasoning ability could be summarized as follows: 1. inquiry-based activities could afford the students lots of opportunities of geometric manipulations and help the students to learn geometry better; 2. the student’s argumentation ability would be enhanced if the teacher offers the students more practices to manipulate geometric figures (ex: the use of auxiliary lines); 3. inquiry-based instruction could afford the students many opportunities to practice deduction and afford much help on cultivating the students’ reasoning ability.
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Chen, Sen-Tai, and 陳森泰. "Researches on using computer drawing method to quickly solve the minimum circumscribed theory of 3D geometric shapes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/18050168148398927457.
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碩士遠東科技大學
機械工程研究所在職專班
103
Roundness and spindle error motion measurements are two fundamental issues in the geometrical measuring technique. Most of the fixture with rotating cylindrical shaft, a minimum circumscribed cylindrical (MCC) is to be employed when the chuck is a cylindrical shaft and a cylinder defined by the minimum circumscribed axis, can be obtained the minimum circumscribed rotation surface high-precision axis. Generally, a more accurate measurement points, can result in a more accurate cylindrical shaft, but the longer the time of the calculation time. In this paper, the drawing method can handle a large number of measurement data to avoid lengthy and complicated calculations, and can quickly obtain the MCC axis precise location, deviation and radius and tolerance. This paper is the use of the minimum circumscribed theoretical approach with computer drawing ways. Comparison is relatively quick and easy. The actual display of the results, which can be easily, obtained the position, skew and deviation of the spindle. This paper will be established a cylindrical outer edge quality assessment model and provided a basis for the cylindrical outer edge quality assessment. This paper for seeking the axis of cylindrical shank is based on minimum circumscribed cylindrical theory with computer drawing method and instances for verification. With MCC theory and computer drawing method quickly solved under way to continue to study a variety of other three-dimensional CAD geometry by the minimum circumscribed theory and quickly solving precision measurement method. The computer drawing method can be determined spindle eccentric angle and the distance of deviation, to provide a reliable model for the evaluation of rotary spindle and 3D geometric shapes, the mode established by the paper at the same time applicable to any other rotating spindle and 3D geometric shapes error evaluation. The computer drawing method is useful in garnering/processing vast amount of data, making calculations a simple and efficient task, saving researchers a lot of time; computer graphics is credited with showing the precision outer edge shape characteristics and the benefit is so obvious that even when we deal with a large number of measurement points all we need is bit more time.
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Yeh, Chung-Ching, and 葉宗青. "A Study of Representative Types and Correlated Factors of Solid Geometric Figure Drawings by Teenagers." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/kxrh7y.
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博士國立臺灣師範大學
工業科技教育學系
96
This study aimed to investigate the representative types of solid geometric figure drawings by teenagers of 6th, 8th and 10th graders and the factors correlated. There were 131 6th, 154 8th and 210 10th graders asked to draw cubes, regular tetrahedrons, regular octahedrons, and regular dodecahedrons in two circumstances. In the first circumstance, the subjects were given verbal instructions and a real model was shown for 5 seconds at the beginning of each test session. In the second circumstance, the model was provided in front of the subjects during the whole session. The subjects' drawings were graded and classified into different types. The grades were then analyzed against the subjects’ grades in Math, Chinese, the General Aptitude Test Battery (GATB) and the Motor Accuracy-Revised tests. Results reveal that the error rate of 6th graders is significantly higher and their grades are significantly lower than those of 8th and 10th graders. It shows that performances of students beyond 8th grade are stable. The results support Lowenfeld’s theory that after reaching the period of decision/crisis the drawing ability of adolescents ceases to develop naturally. The more complicated a solid geometric figure is, the higher the error rate is and the lower the grades are. Besides, grades of female subjects are significantly higher than those of male subjects. Furthermore, the subjects’ performances were improved in the second circumstance under which more cues were given. It is also found that drawing ability is correlated significantly with abilities in spatial relations, picture matching, instrument recognition, hand-eye coordination, angle drawing, vertical and horizontal lines drawing, and grades in Math and Chinese. Hand-eye coordination, spatial relations, angle drawing, and picture matching are argued to be better predictors for drawing ability.
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Hui-Ling, Su, and 蘇慧玲. "The Correlation between Freshmen with Anxiety Tendency, Depressive Tendency and the “Symbolizes Geometrical Self Drawings in the Past , Present , &; Future “." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/28120411949842355996.
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碩士臺北市立教育大學
藝術治療碩士學位學程
100
The purpose of this study is to understand mental health status of freshmen and explore correlation among "Zung’s self-administrated Anxiety Scale(S.A.S), Zung’s self-administrated Depression Scale(S.D.S)" and "Symbolizes Geometrical Self Drawings in the Past, Present, &; Future". Based on a survey using questionaire method, there are 592 valid samples of Feng Chia University freshmen in 2009. In this study, the assessment tools included "S.A.S &; S.D.S" and "Symbolizes Geometrical Self Drawings in the Past, Present, &; Future". The collect data is analyzed by independent t-test, one-way ANOVA, chi-square test. The main findings of the study are as the followings: 1. Different background variables (gender, colleges) have no significant differences on anxiety and depression tendencies. 2. There are relationships between anxiety tendency and "Hue" in "Past" drawings. In the four groups of hue that include warm colors, neutral colors, cold colors and achromatic colors. More people with anxiety tendency use achromatic colors were found, meanwhile, more people without anxiety tendency use neutral colors in their "Past" drawings. 3. There are relationships between the depression tendency and "Hue" in the "Past", "Present", and "Future" drawings, and the length of line in "Future" drawings. There are more people with depression tendency use achromatic colors in the "Past" drawings, and more people without depression tendency use warm colors in their "Present" drawings. There are more people with depression tendency use achromatic colors or short line in the "Future" drawings, meanwhile, more people without depression tendency use warm colors or medium-length line in the "Future" drawings. At last, the researcher has proposed some reflection and suggestion according to the result and outcome of this study as the reference for mental heath practice and future studies.
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Marques, Rui Paulo Mourao. "Otimização da geometria inicial do esboço na estampagem de componentes cilindricos." Master's thesis, 2014. http://hdl.handle.net/10316/38958.
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Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia da Universidade de CoimbraCom a realização deste trabalho pretendeu-se testar a eficiência de algoritmos de otimização da geometria do esboço, a utilizar na estampagem de taças cilíndricas. Baseado na pesquisa bibliográfica realizada, foram selecionadas duas estratégias (estratégia Push-pull e estratégia Logarítmica) de otimização, cuja eficiência e aplicabilidade é avaliada com recurso à simulação numérica pelo método dos elementos finitos, com o programa DD3IMP. De uma maneira geral, o que o algoritmo mede é a altura do componente conformado para cada direção radial, definida em relação à direção de laminagem, e compara-a com a altura objetivo. Sempre que estas alturas são diferentes, o algoritmo corrige a forma inicial do esboço, recorrendo a uma das estratégias selecionadas. Este procedimento é repetido iterativamente até que a diferença entre o objetivo e o componente estampado se encontre dentro duma tolerância definida como aceitável. A realização deste trabalho permite inferir que a estratégia Logarítmica apresenta convergência mais rápida do que a Push-pull. No entanto, mesmo a estratégia Logarítmica é sensível à solução inicial, pelo que a convergência do algoritmo é dificultada sempre que a hipótese de deformação constante na parede do componente não se verifica. O facto de manter a pressão inicial de aperto do cerra-chapas constante não influência a velocidade de convergência. No entanto, o critério de plasticidade adotado para representar o comportamento mecânico do material pode reduzir a velocidade de convergência, caso contribua para que a hipótese de deformação constante na parede do componente não se verifique. Para além disso, o algoritmo apresentado apresenta dificuldades na otimização do esboço para a realização de estampagem com estiramento, pois o comportamento não linear da estampagem é ainda mais acentuado nesta etapa.
The aim of this was to test the efficiency of blank shape optimization algorithms, valid for sheet metal forming of cylindrical cups. Based on the literature survey, two optimization strategies (Push-pull strategy and Logarithmic strategy) were selected and its efficiency and applicability was evaluated using the numerical simulation by the finite element method, with DD3IMP code. In general, the algorithm measures the height of the formed part for each radial direction, defined in relation to the rolling direction, and compares it with the target height. For different height values, the algorithm corrects the initial shape of the blank using one of the selected strategies. This procedure is repeated iteratively until the difference between the objective and the formed part is within a tolerance defined as acceptable. This work allow to infer that the Logarithmic strategy has faster convergence rate than the Push-pull. However, even the logarithmic strategy is sensitive to the initial solution, so that the convergence of the algorithm is always more difficult when the assumption of constant strain in the component wall is no longer valid. The convergence rate is not affected by imposing the condition of initial constant blankholder pressure during the iterative procedure. However, the yield criterion adopted to represent the mechanical behavior of the material can reduce the speed of convergence, when it increase the difficulties in keeping the assumption of constant strain in the component wall valid. Besides that, the presented algorithm presents difficulties in blank optimization when the process includes an ironing stage, since the non-linear behavior of the sheet metal forming process is more pronounced.
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Chang, Po-How, and 張柏豪. "Online Hand-Drawn Geometric Shape Recognition for the Application of Mathematics E-Teaching Environments." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/88404174588534092965.
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碩士國立臺灣海洋大學
資訊工程學系
95
Abstract For the goal of rising knowledge-based economy, Taiwan government plans to launch the applications of e-schoolbag and e-learning ideas based on the information and networking technologies. It is the most important item in the e-Taiwan project from the “Challenge 2008”, the Six-year National Development Plan. In order to conform with the national digital eLearning program, we have developed the digital ink document teaching system that is based on the Tablet PC platform. The key feature of the developed system is digitally pen-based computing which enhances the teaching and interactive learning activities among teachers and students. In order to strengthen the features of fluency and accuracy in teaching mathematics, we have proposed an online geometric shape recognition model which automatically transforms a sketched geometric shape into its corresponding digital shape object. This thesis presents geometric models which define various shapes consisting of fundamental line segments. Prior to performing recognition processes, models of individual geometrics must be created and reserved in the system. There are five major processes in the proposed algorithm including pre-processing, line segment extraction, line segment optimization, line segment refined allocation, and feature matching. In the pre-processing step, the digital point data array of the original sketch will be filtered and normalized. The extraction, optimization, and refined allocation processes effectively generate representative line segments, remove redundant segments, and provide the optimal representation respectively. At the last, the pattern matching process selects the best candidate from possible geometrical shapes. In this research, we have chosen eight frequently drawn geometrics and collected abundant testing samples for system evaluation. The results show that the proposed recognition kernel for hand drawn geometrical shapes achieves a recognition rate of 88.87%.
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Soukup, Jan. "Kreslení geometrických grafů na červeno-modré množiny bodů." Master's thesis, 2021. http://www.nusl.cz/ntk/nusl-448338.
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Consider a set B of blue points and a set R of red points in the plane such that R ∪ B is in general position. A graph drawn in the plane whose edges are straight-line segments is called a geometric graph. We investigate the problem of drawing non-crossing properly colored geometric graphs on the point set R ∪ B. We show that if ||B| − |R|| ≤ 1 and a subset of R forms the vertices of a convex polygon separating the points of B, lying inside the polygon, from the rest of the points of R, lying outside the polygon, then there exists a non-crossing properly colored geometric path on R∪B covering all points of R ∪ B. If R∪B lies on a circle, the size of the longest non-crossing geometric path is related to the size of the largest separated matching; a separated matching is a non-crossing properly colored geometric matching where all edges can be crossed by a line. A discrepancy of R ∪ B is the maximal difference between cardinalities of color classes of intervals on the circle. When the discrepancy of R ∪ B is at most 2, we show that there is a separated matching covering asymptotically 4 5 of points of R ∪ B. During this proof we use a connection between separated matchings and the longest common subsequences between two binary sequences where the symbols correspond to the colors of the points.
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Aterini, Barbara. "La stereotomia e i metodi di rappresentazione prima di Monge." Doctoral thesis, 1996. https://hdl.handle.net/2158/1298443.
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Studio sui problemi della rappresentazione dello spazio tridimensionale nelle varie fasi della storia umana, con particolare riferimento alla stereotomia, cioè a quell’insieme di procedimenti e regole per il disegno ed il taglio dei conci in pietra di una struttura. Dunque la stereotomia come precorririce della moderna Geometria Descrittiva.
La ricerca attraverso lo studio dei trattati fondamentali (il Taccuino di Villard de Honnencourt, l’Architecture di Philibert Delorme, gli studi di Desargues, l’Architettura Civile di Guarino Guarini, l’opera di A.F. Frèzier ed infine quella di Gaspard Monge) ha analizzato le “leggi” che regolavano in antico il disegno geometrico e l’evoluzione della rappresentazione nei secoli fino a giungere alla codificazione dei metodi di rappresentazione che stanno alla base della attuale Geometria Descrittiva.
Un processo evolutivo che, partendo dalle esigenze pratiche di guidare gli operai nella preparazione dei materiali per le costruzioni ed insegnando loro come eseguire il taglio delle pietre e dei legnami, ha dato origine ad una sorta di stereotomia intuita (almeno fino a tutto il Quattrocento), ma talmente consapevole da portare alla realizzazione di eccezionali opere architettoniche. Affermazione supportata da un esempio illustre: la tribuna di sud-est situata sotto il tamburo della cupola della Cattedrale di Santa Maria del Fiore a Firenze, una architettura brunelleschiana, dalle forme complesse con intersezioni di superfici di rotazione, mai rilevata prima che è stata misurata, analizzata e rappresentata in occasione di questa tesi.
Study on the problems of the representation of three-dimensional space in the various phases of human history, with particular reference to stereotomy, i.e. that set of procedures and rules for the design and cutting of the stone ashlars of a structure. So stereotomy as a forerunner of modern Descriptive Geometry.
The research through the study of the fundamental treatises (the Notebook of Villard de Honnencourt, the Architecture of Philibert Delorme, the studies of Desargues, the Civil Architecture of Guarino Guarini, the work of A.F. Frèzier and finally that of Gaspard Monge) has analyzed the "laws" that governed geometric design in ancient times and the evolution of representation over the centuries up to the codification of the methods of representation that are the basis of current Descriptive Geometry.
An evolutionary process which, starting from the practical needs of guiding workers in the preparation of building materials and teaching them how to cut stones and wood, gave rise to a sort of intuitive stereotomy (at least until the end of the fifteenth century) , but so aware as to lead to the creation of exceptional architectural works. Statement supported by an illustrious example: the south-east tribune located under the drum of the dome of the Cathedral of Santa Maria del Fiore in Florence, a Brunelleschian architecture, with complex shapes with intersections of surfaces of rotation, never surveyed before it was measured , analyzed and represented on the occasion of this thesis.
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Sardo, Duarte Miguel Simões Araujo. "Moradia na Comporta : ideia, ordem e desenho - mnemónicas de uma metodologia projetual topológica." Master's thesis, 2019. http://hdl.handle.net/10437/10120.
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Orientação: Hugo Philipe
Herrenschmidt da Nazareth Fernandes de CerqueiraA diversidade de metodologias utilizadas em projeto permanece oculta na maioria dos casos, por vezes mesmo inconscientes, mas os percursos e recursos não deixam de se revelar bastante diversificados entre arquitetos, quando não contraditórios. Coloca-se desde logo a seguinte questão: como refletir sobre o projeto? Quais os paradigmas concetuais envolvidos na reflexão sobre o ato de projetar? como interpretar o lugar, o programa ou os materiais? Convém referir que a pesquisa sobre as metodologias de projeto e a reflexão intrínseca sobre o seu desenho são campos menos divulgados. As diferentes metodologias dos mais variados arquitetos permanecem, na maioria dos casos, ocultas, sendo mais comum a divulgação da obra de arquitetura e menos o seu processo de conceção. A reflexão intrínseca ao projeto, estruturou-se no discurso teórico de Louis Kahn e, mais especificamente, na sua reflexão sobre os conceitos de Ideia, Ordem e Desenho. Na esfera do presente raciocínio, é ainda importante referir que invocamos estas trilogias com base no pensamento de Martin Heidegger e, mais especificamente, na sua evocação sobre alguns aspetos significativos da natureza fenomenológica do lugar. Esta valorização do lugar é, por sua vez, por nós confirmada no discurso de Pierre Von Meiss, e revelada na própria operatividade do projeto.
The diversity between project methodological approaches remain obscured in all most cases, sometimes even unconscious, but the paths and resources are nonetheless quite diverse among architects, if not contradictory. The question is raised: how to reflect on the project design? What are the conceptual paradigms engaged in project design reflection? How to interpretate the place, the program or the materials? It is worth mentioning that the design research metodologies and the inherent reflection over is design are less widespread fields. The diferent design metodologies of the most varied architects remain fogy, being more common the dissemination of the architectural work and less its process of conception. The intrinsic reflection on the project was structured in a theorethical discourse of Louis Kahn, more specifically; in is reflection on the concepts of Idea, Order and Design. In the sphere of the present reasoning, it is still important to note that we invoke these trilogies on the basis of Martin Heidegger´s thinking and, more specifically, his evocation of significant aspects of the phenomenological nature of the place. This appreciation of the place is, its turn, confirmed by us on Pierre Von Meiss speech, and in the operability of the project.