A review on polymer–layered silicate nanocomposites

Progress in Additive Manufacturing and Rapid Prototyping

Polymer/layered silicate (clay) nanocomposites: An overview of flame retardancy

Computerized Image Registration approaches can offer automatic and accurate image alignments without extensive user involvement and provide tools for visualizing combined images. The aim of this survey is to present a review of publications related to Medical Image Registration. This paper paints a comprehensive picture of image registration methods and their applications. This paper is an introduction for those new to the ﬁeld, an overview for those working in the ﬁeld and a reference for those searching for literature on a speciﬁc application. Methods are classiﬁed according to the diﬀerent aspects of Medical Image Registration.

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Survey of Medical Image Registration

A spinal stabilization system may be formed in a patient. In some embodiments, a minimally invasive procedure may be used to form a spinal stabilization system in a patient. Bone fastener assemblies may be coupled to vertebrae. Each bone fastener assembly may include a bone fastener and a collar. The collar may be rotated and/or angulated relative to the bone fastener. Detachable members may be coupled to the collar to allow for formation of the spinal stabilization system through a small skin incision. The detachable members may allow for alignment of the collars to facilitate insertion of an elongated member in the collars. An elongated member may be positioned in the collars and a closure member may be used to secure the elongated member to the collars.

Spinal stabilization systems and methods

From the Publisher:
An Introduction to CAD/CAM/CAE is a timely text with coverage of many modern topics, including: rapid prototyping, virtual engineering, NT-based solid modeling systems, and Web-related issues. This book provides balanced coverage of CAD/CAM (with slightly more emphasis on CAD topics) and bonus coverage of computer-aided engineering (CAE). This book's emphasis on the integration of three related disciplines-CAD, CAM, and CAE-makes it a great theoretical introduction to all subjects from geometric representation to the most sophisticated CAE subjects. Many illustrations and references ground the theory in practical examples. The book also features a unique illustration of the whole product development process through a practical case study that gives readers a clear idea how CAD, CAM, and CAE systems are integrated to accelerate the product development process. This book is carefully targeted toward today's students; topics are introduced in a concise, efficient manner, with mathematical terminology that is kept to a minimum. A background in programming, calculus, and matrix and vector algebra is helpful when using this text.

Principles of CAD/CAM/CAE Systems

Prosthetic intervertebral discs (100) and methods for using the same are described. The subject prosthetic discs (100) include upper (110) and lower (120) endplates separated by a compressible core member (130). The prosthetic discs (100) described herein include one-piece, two-piece, three-piece, and four-piece structures. The subject prosthetic discs (100) exhibit stiffness in the vertical direction, torsional stiffness, bending stiffness in the saggital plane, and bending stiffness in the front plane, where the degree of these features can be controlled independently by adjusting the components of the discs (100). The interface mechanism between the endplates (110, 120) and the core members (130) of several embodiments of the described prosthetic discs (100) enables a very easy surgical operation for implantation.

Prosthetic intervertebral disc and methods for using same

A data structure representing assemblies in a database can be divided into two parts. The first part is the data structure used to store topological and geometric information on each component in an assembly. The second part is the data structure used to store information on how all the components in an assembly are connected. Any existing ‘boundary representation’ scheme can be used to represent each component. In this paper, a winged-edge data representation with extensions to handle multiply-connected faces is recommended. A tree structure using the concept of ‘virtual link’ is created to represent the relationships between the components in an assembly.

A hierarchical data structure for representing assemblies: part I

A method is developed to automatically generate an assembling procedure for an assembly. In this work, an assembly is described by its components and their relationship in an assembly, especially the mating conditions. From the mating conditions of the components, an assembling procedure is generated in two steps. First, each component in an assembly is located at a specific vertex of a hierarchical tree. Second, an assembling procedure is generated from the hierarchical tree with the help of interference checking.

Automatic assembling procedure generation from mating conditions

A method is derived to compute the location and orientation of each component from the spatial relationships imposed on the component in an assembly. With this method, any assembly can be represented by the spatial relationships between its components instead of by the transformation matrices of each component.

Kunwoo Lee

Papers

Principles of CAD/CAM/CAE Systems

Prosthetic intervertebral disc and methods for using same

A hierarchical data structure for representing assemblies: part I

Automatic assembling procedure generation from mating conditions

Inference of the positions of components in an assembly: part 2