Spelling suggestions: "subject:"geometrical"" "subject:"eometrical""
331 |
THE ROLE OF THE MUSIC TO LEARN GEOMETRICAL TRANSFORMATIONSGalante, Daniela 13 April 2012 (has links)
This research studies the interaction among the following contexts: natural language, geometrical language and musical language and it can provide new instruments to accord didactical situations and for a deeper understanding of communication processes. It springs from the consideration that the geometrical transformations are usually used in the compositional processes and the “role of the music to learn geometrical transformations” is actually a new study. In the field of the theory of situations by G. Brousseau (1986) we can assume to be in front of a learning teaching-situation including non-teaching situation as the teacher of musical instruments, while transmitting the knowledge of musical language (theoretical-practical) didn’t have the intention to transmit the geometrical transformation.
|
332 |
Rotated Polar Coordinate system, its Solid Vector Mathematical Operations, and 3-D Unsharp Masking and Gradient-Based Laplacian Spatial Filters of a Field of Vectors for Geometrical Edges DetectionNaser, Inam 16 June 2020 (has links)
No description available.
|
333 |
Solid Vector Subtraction Operation and 3-D Gradient and Laplacian Spatial Filters of a Field of Vectors for Geometrical Edges Magnitude and Direction Detection in Point Cloud SurfacesAl-Anssari, Jalal 15 June 2020 (has links)
No description available.
|
334 |
Úlohy z prostředí Parket pro děti na přechodu mezi MŠ a 1. ročníkem ZŠ / Problems from environment Parquet for children entering the first grade of primary schoolŠmídová, Kateřina January 2021 (has links)
The aim of the submitted diploma thesis is to complete a series of graded tasks from the manipulative environment of Parquet. Then apply these tasks to preschool and school children in the 1st year of elementary school. Not only observe how they cope with these activities, but also how they think, explain their actions, and how they communicate with each other. Observe myself, as a researcher, how do I work with children, how do I communicate with them and how do I submit them the tasks. Record my knowledge and learn from it. The theoretical part defines the individual stages for the preschool and pupils in terms of the development of psychology, they are constructive concepts of teaching mathematics with reference to the RVP ZV and RVP PV. Studied textbooks for the 1st and 2nd year of elementary school searched for activities from the environment of Parquet. Activities are selected that illustrate the typology of tasks. The relevant didactic games related to the Parquet environment are also described. For the practical part is chosen method of qualitative research on the basis of experiments in two research groups. The experiments are composed of individual activities, which are graded from the very basic creation of the parquet, specifying the rules of laying them down on the floor, to the final...
|
335 |
Probabilistic Multi-Compartment Deformable Model, Application to Cell SegmentationFarhand, Sepehr 12 July 2013 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / A crucial task in computer vision and biomedical image applications is to represent images in a numerically compact form for understanding, evaluating and/or mining their content. The fundamental step of this task is the segmentation of images into regions, given some homogeneity criteria, prior appearance and/or shape information criteria. Specifically, segmentation of cells in microscopic images is the first step in analyzing many biomedical applications. This thesis is a part of the project entitled "Construction and profiling of biodegradable cardiac patches for the co-delivery of bFGF and G-CSF growth factors" funded by National Institutes of Health (NIH). We present a method that simultaneously segments the population of cells while partitioning the cell regions into cytoplasm and nucleus in order to evaluate the spatial coordination on the image plane, density and orientation of cells. Having static microscopic images, with no edge information of a cytoplasm boundary and no time sequence constraints, traditional cell segmentation methods would not perform well. The proposed method combines deformable models with a probabilistic framework in a simple graphical model such that it would capture the shape, structure and appearance of a cell. The process aims at the simultaneous cell partitioning into nucleus and cytoplasm. We considered the relative topology of the two distinct cell compartments to derive a better segmentation and compensate for the lack of edge information. The framework is applied to static fluorescent microscopy, where the cultured cells are stained with calcein AM.
|
336 |
Contributions to fuzzy object comparison and applications. Similarity measures for fuzzy and heterogeneous data and their applications.Bashon, Yasmina M. January 2013 (has links)
This thesis makes an original contribution to knowledge in the fi eld
of data objects' comparison where the objects are described by attributes
of fuzzy or heterogeneous (numeric and symbolic) data types.
Many real world database systems and applications require information
management components that provide support for managing
such imperfect and heterogeneous data objects. For example,
with new online information made available from various sources, in
semi-structured, structured or unstructured representations, new information
usage and search algorithms must consider where such data
collections may contain objects/records with di fferent types of data:
fuzzy, numerical and categorical for the same attributes.
New approaches of similarity have been presented in this research to
support such data comparison. A generalisation of both geometric and set theoretical similarity models has enabled propose new similarity
measures presented in this thesis, to handle the vagueness (fuzzy data
type) within data objects. A framework of new and unif ied similarity
measures for comparing heterogeneous objects described by numerical,
categorical and fuzzy attributes has also been introduced.
Examples are used to illustrate, compare and discuss the applications
and e fficiency of the proposed approaches to heterogeneous data comparison. / Libyan Embassy
|
337 |
[pt] AVALIAÇÃO DO EFEITO DAS IMPERFEIÇÕES SOBRE A FLAMBAGEM DE ESTRUTURAS SOB A AÇÃO DE CARGAS DEPENDENTES DOS DESLOCAMENTOS / [es] EVALUACIÓN DEL EFECTO DA LAS IMPERFECCIONES SOBRE EL FLAMEO DE EXTRUCTURAS SOBRE LA ACCIÓN DE CARGAS DEPENDIENTES DE LOS DESLOCAMIENTOS / [en] EVALUATION OF THE IMPERFECTION EFFECTS ON THE BUCKLING LOADS OF STRUCTURESWALTER MENEZES GUIMARAES JUNIOR 20 February 2001 (has links)
[pt] Um procedimento simples, para a avaliação do aumento ou
diminuição (sensibilidade) das cargas de flambagem estática
ou dinâmica (flutter) de estruturas na presença de pequenas
imperfeições geométricas, é apresentado.
O modelo computacional considera estruturas planas
elásticas modeladas por elementos de viga retos. Os
sistemas de carregamento podem ser conservativos ou não-
conservativos.
A formulação matricial inclui as matrizes de rigidez
elástica, de massa e geométrica usuais. O algoritmo
implementado avalia a carga crítica clássica.
Adicionalmente, as imperfeições são levadas em conta a
partir de uma matriz de imperfeição, resultante da mudança
na rigidez elástica decorrente de pequenos desvios na
geometria (pequenas rotações nos elementos).
São apresentados exemplos para ilustrar a técnica
desenvolvida e investigar as cargas de flambagem de algumas
estruturas básicas: pórtico de Roorda, coluna de Euler,
coluna de Beck, arco circular e viga sobre base elástica
(análogo à deformação axissimétrica de uma casca
cilíndrica). Conclui-se que o uso da matriz de imperfeição
proposta pode fornecer valiosa informação qualitativa sobre
a sensibilidade da carga de flambagem em relação às
imperfeições. / [en] A simple procedure for the evaluation of the increase
or decrease (sensitivity) of static and dynamic (flutter)
buckling loads of structures in the presence of small
geometrical imperfections is presented.
The computational model considers plane elastic
structures modelled by straight beam elements. The loading
systems cam be conservative or non-conservative.
The matrix formulation includes the usual elastic
stiffness, mass, and geometric matrices. The algorithm
implemented herein evaluates the classical critical load. In
addition, the imperfections are taken into account by an
imperfection matrix, which results from the change in the
elastic stiffness due to small deviations of geometry (small
rotations of the elements).
Examples are presented to illustrate the technique
developed herein and to investigate the buckling loads of
some
basic structures: Roorda´s frame, Euler´s column, Beck´s
column, circular arch, and beam on elastic foundation
(analogous to axissimetric deformation of cylindrical
shell).
It is concluded that the use of the proposed imperfection
matrix can provide valuable qualitative information on the
sensitivity of the buckling load to imperfections. / [es] En este trabajo se presenta un procedimento simple para la evaluación del aumento o disminución (sensibilidad)
de las cargas de flameo estática o dinámica (flutter) de extructuras en presencia de pequeñas imperfecciones
geométricas. El modelo computacional considera extructuras planas elásticas modeladas por elementos de viga
rectos. Los sistemasde carga pueden ser conservativos o no- conservativos. La formulación matricial incluye las
matrices de rígidez elástica, de masa y geométrica usuales. El algoritmo implementado evalúa la carga crítica
clásica. Adicionalmente, las imperfecciones se consideran a partir de una matriz de imperfección, resultante de la
mudanza en la rígidez elástica consecuencia de pequeños desvios en la geometría (pequeñas rotaciones en los
elementos). Se presentan ejemplos para ilustrar la técnica desarrollada e investigar las cargas de flameo de
algumas extructuras básicas: pórtico de Roorda, columna de Euler, columna de Beck, arco circular y viga sobre
base elástica (análogo a la deformación axisimétrica de una cáscara cilíndrica). Se concluye que el uso de la
matriz de imperfección propuesta puede ofrecer una valiosa información cualitativa sobre la sensibilidad de la carga
de flameo en relación a las imperfecciones.
|
338 |
[pt] APLICAÇÃO DE TÉCNICA DE SÍNTESE DE LENTES CIRCULARMENTE SIMÉTRICAS / [en] APPLICATION OF A TECHNIQUE FOR THE SYNTHESIS OF CIRCULARLY SYMMETRIC LENSESRODRIGO SAMICO BALTER 24 January 2024 (has links)
[pt] Este trabalho tem como objetivo aplicar uma técnica de síntese ótica
de lentes dielétricas circularmente simétricas, que são iluminadas por uma
fonte pontual com diagrama circularmente simétrico. A interface da lente
(interface do dielétrico-ar) será modelada utilizando as aproximações da Ótica
Geométrica e da Física Ótica. Da Ótica Geométrica, o controle da densidade
de potência em campo distante é obtido pela aplicação de conservação de
energia no interior dos tubos de raios que emergem do centro de fase da
fonte e a determinação da direção dos raios que emergem da superfície do
dielétrico é obtida através da aplicação da Lei de Snell para os raios incidentes
na interface. Da Física Ótica, é possível obter as correntes elétrica e magnética
na superfície externa da lente para determinar o campo radiado na integração
dessas correntes pela superfície a partir da suposição de que as dimensões da
lente e da curvatura da interface sejam muito maiores que um comprimento de
onda no espaço livre. Devido a simetria circular, simplificações na formulação
e nos esquemas numéricos para a solução serão apresentadas, resultando em
técnica de projeto mais eficientes. A descrição da superfície da interface da
lente é obtida através de técnica numérica. / [en] This work aims to apply a technique of optical synthesis of symmetrically
circular dielectric lenses, which are illuminated by a point source with a
symmetrically circular diagram. The lens interface (dielectric-air interface) will
be modeled using the approximations of Geometric Optics and Physical Optics.
From Geometric Optics, control of the power density in the far field is obtained
by applying energy conservation inside the ray tubes that emerge from the
phase center of the source and the determination of the direction of the rays
emerging from the dielectric surface is obtained through the application of
Snell’s law for the incident rays at the interface. From Physical Optics, it is
possible to obtain the electric and magnetic currents on the external surface
of the lens to determine the radiated field in the integration of these currents
along the surface assuming that the lens dimensions and interface curvature
are much larger than a wavelength in free space. Due to circular symmetry,
simplifications in formulation and numerical schemes for the solution will be
presented, resulting in a more efficient design technique. The description of the
lens interface surface is obtained through numerical technique.
|
339 |
A B-Spline Geometric Modeling Methodology for Free Surface SimulationNandihalli, Sunil S 08 May 2004 (has links)
Modeling the free surface flows is important in order to estimate the total drag of the sea Vessels. It is also necessary to study the effects of various maritime maneuvers. In this work, different ways of approximating an unstructured free surface grid with a B-spline surface are investigated. The Least squares and Galerkin approaches are studied in this regard. B-spline nite element method (BSPFEM) is studied for the solution of the steady-state kinematic free surface equation. The volume grid has to be moved in order to match the free boundary when the surface-tracking approach is adopted for the solution of free surface problem. Inherent smoothness of the B-spline representation of the free surface aids this process. B-spline representation of the free surface aids in building viscous volume grids hose boundaries closely match the steady state free surface. The B-spline approximation algorithm and BSPFEM solution of free surface equation have been tested with hypothetical algebraic testcases and real cases such as Gbody, Wigley hull and David Taylor Model Basin(DTMB) 5415 hull series.
|
340 |
Gas Dispersion Using an Up-Pumping Maxflo W ImpellerShaik, Muneeb Ur Rahman 06 June 2014 (has links)
No description available.
|
Page generated in 0.0717 seconds