作者: inventory 時(shí)間: 2025-3-21 22:04
Unimodal Properties of Generalized Ball Bases,lied to show that the Generalized Ball basis of degree . is always unimodal whenever . is odd and is never unimodal whenever . is even except for the cases . = 2, 4. A new proof of the unimodality of the Bernstein basis is also provided.作者: 使虛弱 時(shí)間: 2025-3-22 03:42 作者: 膽小懦夫 時(shí)間: 2025-3-22 07:15
Complex PDE Surface Generation for Analysis and Manufacture,sis on the influence of the boundary conditions and the effects of parametrisation. The constraints imposed by the requirements of analysis and typical rapid prototyping techniques on the representation of the surface geometry are addressed. These ideas are then employed to obtain the generic design作者: 救護(hù)車(chē) 時(shí)間: 2025-3-22 11:25
,Weight Estimation of Rational Bézier Curves and Surfaces,g polynomial schemes in CAGD. This paper presents several methods to generate weights of rational Bézier curves and surfaces. The main idea is to find weights which minimize functional measuring a technical smoothness of the curves and surfaces. These functional are related to the energy of beams an作者: Aboveboard 時(shí)間: 2025-3-22 14:35
The Use of Multiple Knots for B-spline Finite Element Approximations to PDE Surfaces,the finite element method with appropriate B-spline basis functions as the basis. This paper looks at the use of multiple knots in the B-spline surface approximation to a PDE surface with a view to allowing discontinuities in the surface normal at certain locations. The method is applied to the surf作者: Aboveboard 時(shí)間: 2025-3-22 19:58 作者: Receive 時(shí)間: 2025-3-22 23:54 作者: 做作 時(shí)間: 2025-3-23 01:47 作者: 下船 時(shí)間: 2025-3-23 07:31 作者: 發(fā)芽 時(shí)間: 2025-3-23 12:59
Localized Radial Basis Methods Using Rational Triangle Patches,these radial basis methods is that they are not local and they are computationally expensive and unstable if there are a large number of data points. We present a localized interpolation method that involves partitioning the data into arbitrary overlapping triangular regions based on arbitrary point作者: certain 時(shí)間: 2025-3-23 14:00
Repeated Knots in Least Squares Multiquadric Functions,ation of scattered data by multiquadric functions. In this paper we observe that this leads naturally to the inclusion of derivatives of the multiquadric basis function in the approximation, and give an algorithm for accomplishing this. A comparison of the results obtained with this algorithm and th作者: Aids209 時(shí)間: 2025-3-23 21:30 作者: maladorit 時(shí)間: 2025-3-23 23:00
A Quartic Spline Based on a Variational Approach,tly different variational problem that depends on the input data. The goal is to obtain a spline that may have high second derivatives at the interpolated points and low second derivatives between two consecutive interpolated points. The solution is a .. continuous quartic spline.作者: Thyroiditis 時(shí)間: 2025-3-24 02:30
A Knowledge-Based System for Geometric Design,roblem formulation knowledge serves to classify the problem type according to statements given by the user about geometric data, mathematical representation, criterion function and discrete as well as integral constraints. Problem solution knowledge pertains to the choice of adequate problem solvers作者: Obsessed 時(shí)間: 2025-3-24 10:09 作者: 結(jié)束 時(shí)間: 2025-3-24 13:09 作者: 類(lèi)似思想 時(shí)間: 2025-3-24 17:02 作者: Aprope 時(shí)間: 2025-3-24 19:35
,New Work – eine neue Zeit bricht an,lied to show that the Generalized Ball basis of degree . is always unimodal whenever . is odd and is never unimodal whenever . is even except for the cases . = 2, 4. A new proof of the unimodality of the Bernstein basis is also provided.作者: 統(tǒng)治人類(lèi) 時(shí)間: 2025-3-25 01:28
https://doi.org/10.1007/978-3-658-44655-0oth blending and rendering of trimmed patches. This article reviews existing strategies that provide solutions to these problems and presents a new method that uses Coons’ patches for geometric redefinition of trimmed tensor product surfaces.作者: CHOP 時(shí)間: 2025-3-25 05:49
https://doi.org/10.1007/978-3-7091-9813-1struction of A. Overhauser is one of the earliest examples after Ferguson [8]. Besides its extreme simplicity and robustness, this spline (in the cardinal case) deserves some interest because of its affine invariance. This allows a complete analysis of its shape-preserving properties, which is given in the present paper.作者: DEMUR 時(shí)間: 2025-3-25 09:48 作者: Immunoglobulin 時(shí)間: 2025-3-25 14:01 作者: 宿醉 時(shí)間: 2025-3-25 18:00
Miriam Peters,Henrike Sappok-Laueim curves of tensor product Bézier surfaces. Trimming curves are assumed to be defined as Bézier curves in surface parameter domain. A Bézier spline approximation of lower polynomial degree is built up as well, which is based on the exact trim curve representation in coordinate space.作者: musicologist 時(shí)間: 2025-3-25 22:41
Unimodal Properties of Generalized Ball Bases,lied to show that the Generalized Ball basis of degree . is always unimodal whenever . is odd and is never unimodal whenever . is even except for the cases . = 2, 4. A new proof of the unimodality of the Bernstein basis is also provided.作者: PAGAN 時(shí)間: 2025-3-26 04:08
Geometric Design with Trimmed Surfaces,oth blending and rendering of trimmed patches. This article reviews existing strategies that provide solutions to these problems and presents a new method that uses Coons’ patches for geometric redefinition of trimmed tensor product surfaces.作者: Occipital-Lobe 時(shí)間: 2025-3-26 05:49
The Shape of the Overhauser Spline,struction of A. Overhauser is one of the earliest examples after Ferguson [8]. Besides its extreme simplicity and robustness, this spline (in the cardinal case) deserves some interest because of its affine invariance. This allows a complete analysis of its shape-preserving properties, which is given in the present paper.作者: Ibd810 時(shí)間: 2025-3-26 11:37
Stability Concept for Surfaces,uction of the designed object. Apart from the design process of parametric surfaces another important domain in geometric modeling exists: shape control. In this paper we present a stability concept for surfaces based on infinitesimal bendings.作者: 我就不公正 時(shí)間: 2025-3-26 15:15
A Quartic Spline Based on a Variational Approach,tly different variational problem that depends on the input data. The goal is to obtain a spline that may have high second derivatives at the interpolated points and low second derivatives between two consecutive interpolated points. The solution is a .. continuous quartic spline.作者: 表被動(dòng) 時(shí)間: 2025-3-26 20:30
,Bézier Representation of Trim Curves,im curves of tensor product Bézier surfaces. Trimming curves are assumed to be defined as Bézier curves in surface parameter domain. A Bézier spline approximation of lower polynomial degree is built up as well, which is based on the exact trim curve representation in coordinate space.作者: Lethargic 時(shí)間: 2025-3-26 23:33 作者: 避開(kāi) 時(shí)間: 2025-3-27 04:45
,New Work – eine neue Zeit bricht an,lied to show that the Generalized Ball basis of degree . is always unimodal whenever . is odd and is never unimodal whenever . is even except for the cases . = 2, 4. A new proof of the unimodality of the Bernstein basis is also provided.作者: Infirm 時(shí)間: 2025-3-27 06:18
https://doi.org/10.1007/978-3-642-36436-5es. This paper summarizes the fundamentals of the theory of Nef polyhedra and illustrates them by means of simple 2D examples. The notions of Nef polyhedron, locally adjoined pyramid and face of a Nef polyhedron are carefully explained. Data structures for representing Nef polyhedra are discussed, a作者: ANTIC 時(shí)間: 2025-3-27 13:31 作者: 詼諧 時(shí)間: 2025-3-27 14:38 作者: 英寸 時(shí)間: 2025-3-27 17:48 作者: 騙子 時(shí)間: 2025-3-28 01:54 作者: 不遵守 時(shí)間: 2025-3-28 04:55
https://doi.org/10.1007/978-3-7091-9813-1struction of A. Overhauser is one of the earliest examples after Ferguson [8]. Besides its extreme simplicity and robustness, this spline (in the cardinal case) deserves some interest because of its affine invariance. This allows a complete analysis of its shape-preserving properties, which is given作者: Evacuate 時(shí)間: 2025-3-28 06:55
https://doi.org/10.1007/978-3-7091-4181-6ng planar cubic B-spline curves by subsequently removing and reinserting knots. Instead our new algorithm is based on the idea of subsequently changing one control point of a given B-spline curve so that the new curve minimizes the integral of the squared /-th derivative of the B-spline curve. How t作者: paragon 時(shí)間: 2025-3-28 13:56
Werbewirkung als Basis für den Werbeerfolgo reduce time and costs during the product development cycle. In this paper, an investigation into the nature of this integration problem is performed, followed by the specification of a series of requirements on CAD systems to support it. Guided by these pragmatic requirements, we present an approa作者: 四牛在彎曲 時(shí)間: 2025-3-28 18:15
https://doi.org/10.1007/978-3-658-44626-0these radial basis methods is that they are not local and they are computationally expensive and unstable if there are a large number of data points. We present a localized interpolation method that involves partitioning the data into arbitrary overlapping triangular regions based on arbitrary point作者: Coma704 時(shí)間: 2025-3-28 21:28 作者: 雇傭兵 時(shí)間: 2025-3-29 00:48
uction of the designed object. Apart from the design process of parametric surfaces another important domain in geometric modeling exists: shape control. In this paper we present a stability concept for surfaces based on infinitesimal bendings.作者: intention 時(shí)間: 2025-3-29 03:59
Die Technik des Russlandgesch?ftestly different variational problem that depends on the input data. The goal is to obtain a spline that may have high second derivatives at the interpolated points and low second derivatives between two consecutive interpolated points. The solution is a .. continuous quartic spline.作者: 無(wú)價(jià)值 時(shí)間: 2025-3-29 10:32 作者: BOON 時(shí)間: 2025-3-29 14:34
Miriam Peters,Henrike Sappok-Laueim curves of tensor product Bézier surfaces. Trimming curves are assumed to be defined as Bézier curves in surface parameter domain. A Bézier spline approximation of lower polynomial degree is built up as well, which is based on the exact trim curve representation in coordinate space.作者: hemophilia 時(shí)間: 2025-3-29 17:59
Das Schrifttum der Wirtschaftsphilosophieeen features is introduced. In the engineering world, form features typically occur with counterparts in designs. Using the method presented herein, the user is able to create libraries of specific form features. These features can then be used in designs. Constraints between features can be set by 作者: 禁令 時(shí)間: 2025-3-29 22:05
978-3-211-82666-9Springer-Verlag/Wien 1995作者: 炸壞 時(shí)間: 2025-3-29 23:52
Geometric Modelling978-3-7091-7584-2Series ISSN 0344-8029 作者: originality 時(shí)間: 2025-3-30 04:59
https://doi.org/10.1007/978-3-658-45474-6A representation of trigonometric curves and surfaces is introduced that allows intuitive control of the shape. The representation is obtained by transferring the Bernstein-Bézier representation of polynomials in geometric modeling to trigonometrically represented shapes.作者: 等待 時(shí)間: 2025-3-30 11:17 作者: Notify 時(shí)間: 2025-3-30 12:54
Control Point Representations of Trigonometrically Specified Curves and Surfaces,A representation of trigonometric curves and surfaces is introduced that allows intuitive control of the shape. The representation is obtained by transferring the Bernstein-Bézier representation of polynomials in geometric modeling to trigonometrically represented shapes.作者: 裂隙 時(shí)間: 2025-3-30 20:02
Towards Optimality in Automated Feature Recognition,Various approaches to the automated recognition of form features from geometric models are reviewed, and their relative advantages and disadvantages analysed. A synthesis is then made of the best aspects of the methods surveyed, and suggestions put forward for the development of improved methods for the future.作者: 熔巖 時(shí)間: 2025-3-30 23:20 作者: 咒語(yǔ) 時(shí)間: 2025-3-31 03:37
Das Schrifttum der Wirtschaftsphilosophiethe user and are then automatically maintained throughout design modifications. Capturing the intended design concepts in an intelligent CAD data structure, this approach constitutes a major step forward in CAD technology. Due to this approach, many errors are presented that conventional systems are prone to during design changes.作者: 樂(lè)章 時(shí)間: 2025-3-31 07:13 作者: evince 時(shí)間: 2025-3-31 11:55
Solid Modeling with Constrained Form Features,the user and are then automatically maintained throughout design modifications. Capturing the intended design concepts in an intelligent CAD data structure, this approach constitutes a major step forward in CAD technology. Due to this approach, many errors are presented that conventional systems are prone to during design changes.作者: fringe 時(shí)間: 2025-3-31 14:51
0344-8029 le impulses for new research. Topics explored include NURBS, product engineering, object oriented modelling, solid modelling, surface interrogation, feature modelling, variational design, scattered data algorithms, geometry processing, blending methods, smoothing and fairing algorithms, spline conve作者: Grievance 時(shí)間: 2025-3-31 19:54
https://doi.org/10.1007/978-3-642-36436-5hedron, locally adjoined pyramid and face of a Nef polyhedron are carefully explained. Data structures for representing Nef polyhedra are discussed, and an implemented test-system is presented with the aid of a small application.作者: 的染料 時(shí)間: 2025-3-31 23:31
Bau und Einrichtung von Molkereien,l rapid prototyping techniques on the representation of the surface geometry are addressed. These ideas are then employed to obtain the generic design of an engine inlet port of the type which induces swirl, and the results of an analysis of the flow using a powerful automatic mesh generator and analysis package (VECTIS) are presented.作者: Mere僅僅 時(shí)間: 2025-4-1 02:24
https://doi.org/10.1007/978-3-031-59991-0e approximation to a PDE surface with a view to allowing discontinuities in the surface normal at certain locations. The method is applied to the surface of a yacht hull where an analytic solution is known, and hence comparison using approximations to the Euclidean and maximum norms can be made.作者: gregarious 時(shí)間: 2025-4-1 06:50 作者: Etching 時(shí)間: 2025-4-1 12:51
Werbewirkung als Basis für den Werbeerfolg, followed by the specification of a series of requirements on CAD systems to support it. Guided by these pragmatic requirements, we present an approach based on constrained parametric structures and on an analysis-flow graph. Finally, we discuss our experience with a prototype implementation on the top of the . CAD system.作者: Hormones 時(shí)間: 2025-4-1 15:39
Die Strafzumessung in der Revisionric basis function in the approximation, and give an algorithm for accomplishing this. A comparison of the results obtained with this algorithm and the previous one is made. While the multiple knot algorithm usually has the advantage in terms of accuracy and computational stability, there are datasets for which this is reversed.作者: MUMP 時(shí)間: 2025-4-1 20:31
