Xem 1-20 trên 1945 kết quả Surface
  • Import 2D outline drawing into Catia Build 3D curves based on the imported drawing Build the upper surfaces of the mouse (by Generative Shape Design) Do the draft analysis to search any undercut portion on the upper surfaces Adjust the curvature of the problem surface manually Build the lower surfaces of the mouse Convert the surfaces into a solid Build the parting surfaces based on the imported drawing Create components from the finished model Re-assemble the components into a product Modify the outlook of the master model and then get all components updated automatically...

    pdf99p nguyen8 02-12-2009 332 200   Download

  • Tham khảo tài liệu 'bottle – using surface features', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf19p nguyenphuong_28 29-04-2010 79 29   Download

  • The principle of Occam’s razor loosely translates to “the simplest solution is often the best”. The author of Kinematic Geometry of Surface Machining utilizes this reductionist philosophy to provide a solution to the highly inefficient process of machining sculptured parts on multi-axis NC machines. He has developed a method to quickly calculate the necessary parameters, greatly reduce trial and error, and achieve efficient machining processes by using less input information, and in turn saving a great deal of time.

    pdf516p kennybibo 14-07-2012 65 25   Download

  • The genesis of this book began on the sunny shores of southern France in September 1993. For five days in the delightful Mediterranean coastal town of La Londe Les Maures, a gathering occurred of a group of scientists interested in furthering both the understanding and use of thermal infrared (TIR) remote sensing data for analysis of land surface processes.

    pdf439p 951628473 07-05-2012 55 16   Download

  • Tools shape how we think; when the only tool you have is an axe, everything resembles a tree or a log. The rapid advances in instrumentation in the last decade, which allow us to measure and manipulate individual molecules and structures on the nanoscale, have caused a paradigm shift in the way we view molecular behavior and surfaces. The microscopic details underlying interfacial phenomena have customarily been inferred from in situ measurements of macroscopic quantities. Now we can see and “finger” physical and chemical processes at interfaces.

    pdf674p thix1minh 16-10-2012 39 16   Download

  • This book, based on intensive research I have conducted since the late 1970s, is my attempt to cover in one monograph the modern theory of surface generation with a focus on kinematic geometry of surfacemachining on amultiaxis numerical control (NC) machine. Although the orientation of this book is toward computer-aided design (CAD) and computer-aidedmanufacturing (CAM), it is also useful for solving problems that relate to the generation of surfaces on machine tools of conventional design (for example, gear generators, and so forth)....

    pdf516p pt_1669 28-03-2012 38 12   Download

  • The machining of complex sculptured surfaces is an important technological topic in modern manufacturing, namely in the molds and dies sector. Today, this sector, with great importance to automotive, aircraft and others advanced industries, is placed in all industrialized or emerging countries. In the recent past, the traditional technology employed in molds and dies manufacture was a combination of con- ventional milling and electro-discharge machining (EDM) or electrochemical machining (ECM).

    pdf266p bisu_5 07-05-2013 25 10   Download

  • In this paper we will prove the Calabi-Yau conjectures for embedded surfaces (i.e., surfaces without self-intersection). In fact, we will prove considerably more. The heart of our argument is very general and should apply to a variety of situations, as will be more apparent once we describe the main steps of the proof later in the introduction.

    pdf34p dontetvui 17-01-2013 16 7   Download

  • As Microsoft's first foray into the tablet market, the Surface is packed with all the features you're looking for to stay entertained and get things done wherever you go. Written by bestselling veteran author Andy Rathbone, this full-color, easy-to-understand book is packed with information on how to use the new interface, figure out the operating system, navigate the new app environment, and take full advantage of this exciting new tablet device.

    pdf0p ringphone 06-05-2013 17 6   Download

  • We study the integral points on surfaces by means of a new method, relying on the Schmidt Subspace Theorem. This method was recently introduced in [CZ] for the case of curves, leading to a new proof of Siegel’s celebrated theorem that any affine algebraic curve defined over a number field has only finitely many S-integral points, unless it has genus zero and not more than two points at infinity. Here, under certain conditions involving the intersection matrix of the divisors at infinity, we shall conclude that the integral points on a surface all lie on a curve. We shall...

    pdf23p tuanloccuoi 04-01-2013 21 5   Download

  • The theory of polyhedral surfaces and, more generally, the field of discrete differential geometry are presently emerging on the border of differential and discrete geometry. Whereas classical differential geometry investigates smooth geometric shapes (such as surfaces), and discrete geometry studies geometric shapes with a finite number of elements (polyhedra), the theory of polyhedral surfaces aims at a development of discrete equivalents of the geometric notions and methods of surface theory. The latter appears then as a limit of the refinement of the discretization. ...

    pdf35p noel_noel 17-01-2013 19 5   Download

  • In this paper, we study the growth of sX(L), the number of simple closed geodesics of length ≤ L on a complete hyperbolic surface X of finite area. We also study the frequencies of different types of simple closed geodesics on X and their relationship with the Weil-Petersson volumes of moduli spaces of bordered Riemann surfaces.

    pdf30p dontetvui 17-01-2013 18 5   Download

  • Tham khảo sách 'crc press kinematic geometry of surface machining', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf516p chipmoon 19-07-2012 18 4   Download

  • In this volume I present some examples of Basic Concepts, Examination of Functions, Level Curves and Level Surfaces and Description of Curves, cf. also Calculus 2b, Functions of Several Variables. Since my aim also has been to demonstrate some solution strategy I have as far as possible structured the examples according to the following form A Awareness, i.e. a short description of what is the problem. D Decision, i.e. a reflection over what should be done with the problem. I Implementation, i.e. where all the calculations are made. C Control, i.e. a test of the result.

    pdf0p sn_buon 29-11-2012 29 4   Download

  • Annals of Mathematics We study the motion of an incompressible perfect liquid body in vacuum. This can be thought of as a model for the motion of the ocean or a star. The free surface moves with the velocity of the liquid and the pressure vanishes on the free surface. This leads to a free boundary problem for Euler’s equations, where the regularity of the boundary enters to highest order. We prove local existence in Sobolev spaces assuming a “physical condition”, related to the fact that the pressure of a fluid has to be positive. ...

    pdf87p noel_noel 17-01-2013 23 4   Download

  • The solid gas interface general considerations, adsorption of gases and vapors on solids, chemisorption and catalysis is the main content of the book "Physical Chemistry of Surfaces". Invite you to consult the text book for more documents serving the academic needs and research.

    pdf190p nguyenphong201 12-12-2015 15 4   Download

  • Cover Image by Steve Oudot (INRIA, Sophia Antipolis) The standard left trefoil knot, represented as the intersection between two algebraic surfaces that are the images through a stereographic projection of two submanifolds of the unit 3-sphere S3 – further details can be found in [1, Chap. III, Section 8.5]. This picture was obtained from a 3D model generated with the CGAL surface meshing algorithm. [1] E. Brieskorn and H. Knörrer. Plane Algebraic Curves. Birkhäuser, Basel

    pdf0p khangoc2393 13-08-2012 20 3   Download

  • Pigment epithelium-derived factor (PEDF), a potent blocker of angiogene-sis in vivo, and of endothelial cell migration and tubule formation, binds with high affinity to an as yet unknown protein on the surfaces of endothe-lial cells. Given that protein fingerprinting suggested a match of a 60 kDa PEDF-binding protein in bovine retina withBos taurusF1-ATP synthase b-subunit, and that F1Fo-ATP synthase components have been identified recently as cell-surface receptors, we examined the direct binding of PEDF to F1. ...

    pdf14p mobifone23 21-01-2013 14 3   Download

  • The main objective of this work is to develop efficient techniques to couple solutions for performance of reservoir and surface facilities, which is a fundamental step for the development of management routines and for optiinization of total system periormance. Use of conventional techniques for full-field models can be very computation time intensive and, therefore, such models are either rarely used or they are simplified by handling surface facilities explicitly.

    pdf194p xunu1311 02-11-2012 12 2   Download

  • This paper addresses a data-driven surface realisation model based on a large-scale reversible grammar of German. We investigate the relationship between the surface realisation performance and the character of the input to generation, i.e. its degree of underspecification. We extend a syntactic surface realisation system, which can be trained to choose among word order variants, such that the candidate set includes active and passive variants.

    pdf11p hongdo_1 12-04-2013 16 2   Download

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