Production, Delivery and Playback of 3D Graphics

2011 ◽  
pp. 855-862
Author(s):  
Thomas Di Giacomo ◽  
Chris Joslin ◽  
Nadia Magnenat-Thalmann
Keyword(s):  
Three Dimensional ◽  
Personal Digital Assistants ◽  
Main Concern ◽  
3D Graphics ◽  
Time Model ◽  
New Era ◽  
Everyday Objects ◽  
Network Connection ◽  
General Expectation

Three-dimensional (3D) representation is one of the cornerstones of Computer Graphics (CG) and multimedia content. Advances in this domain, coupled with the highly fuelled progression of 3D graphics cards, have pushed the complexity of these representations into a whole new era, whereby a single real-time model can consist of more than a million polygons. Huge architectural buildings, everyday objects, even humans themselves, can be represented using 3D graphics in such detail that it is difficult to distinguish between real and virtual objects. Concurrently, and much towards the other end of the scale, many devices, such as Personal Digital Assistants (PDAs), mobile phones, laptops and so forth, are now “3D capable” to enhance a user’s experience and to provide much more depth to the information presented. In many cases, these devices access the same content from the same service provider; for example, providing virtual maps/guides, multi-user games and so forth. It is this broadness of content and the heterogeneity of devices in terms of performance, capability, network connection and more that is the main concern in a continuously expanding market. It is also the concern of users to obtain the best quality for their device; that is, the general expectation of any device of higher performance is that overall the quality of the experience will be better.

Scanning Electron Microscopy in Hybrid Microelectronics

1976 ◽  
Vol 34 ◽  
pp. 456-457
Author(s):  
S. Khadpe ◽  
R. Faryniak
Keyword(s):  
Integrated Circuits ◽  
Thick Film ◽  
Integrated Circuit ◽  
Failure Modes ◽  
Three Dimensional ◽  
Circuit Components ◽  
Hybrid Microcircuit ◽  
Electrical Connections ◽  
Scanning Electron

The Scanning Electron Microscope (SEM) is an important tool in Thick Film Hybrid Microcircuits Manufacturing because of its large depth of focus and three dimensional capability. This paper discusses some of the important areas in which the SEM is used to monitor process control and component failure modes during the various stages of manufacture of a typical hybrid microcircuit.Figure 1 shows a thick film hybrid microcircuit used in a Motorola Paging Receiver. The circuit consists of thick film resistors and conductors screened and fired on a ceramic (aluminum oxide) substrate. Two integrated circuit dice are bonded to the conductors by means of conductive epoxy and electrical connections from each integrated circuit to the substrate are made by ultrasonically bonding 1 mil aluminum wires from the die pads to appropriate conductor pads on the substrate. In addition to the integrated circuits and the resistors, the circuit includes seven chip capacitors soldered onto the substrate. Some of the important considerations involved in the selection and reliability aspects of the hybrid circuit components are: (a) the quality of the substrate; (b) the surface structure of the thick film conductors; (c) the metallization characteristics of the integrated circuit; and (d) the quality of the wire bond interconnections.

Semi-automated methods for 3-D reconstruction of macromolecular complexes

1995 ◽  
Vol 53 ◽  
pp. 42-43
Author(s):  
B. Carragher ◽  
M. Whittaker
Keyword(s):  
Three Dimensional ◽  
Time Saving ◽  
Macromolecular Complexes ◽  
Symmetry Properties ◽  
Dimensional Reconstruction ◽  
Experienced Operator ◽  
Projection Images ◽  
The Individual ◽  
Natural Symmetry

Techniques for three-dimensional reconstruction of macromolecular complexes from electron micrographs have been successfully used for many years. These include methods which take advantage of the natural symmetry properties of the structure (for example helical or icosahedral) as well as those that use single axis or other tilting geometries to reconstruct from a set of projection images. These techniques have traditionally relied on a very experienced operator to manually perform the often numerous and time consuming steps required to obtain the final reconstruction. While the guidance and oversight of an experienced and critical operator will always be an essential component of these techniques, recent advances in computer technology, microprocessor controlled microscopes and the availability of high quality CCD cameras have provided the means to automate many of the individual steps.During the acquisition of data automation provides benefits not only in terms of convenience and time saving but also in circumstances where manual procedures limit the quality of the final reconstruction.

Towards Predicting Relative Belt Edge Endurance With the Finite Element Method

1990 ◽  
Vol 18 (4) ◽  
pp. 216-235 ◽  
Author(s):  
J. De Eskinazi ◽  
K. Ishihara ◽  
H. Volk ◽  
T. C. Warholic
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
The Finite Element Method ◽  
Shear Deformations ◽  
Element Analysis ◽  
Vertical Loading ◽  
Predicted Values ◽  
Element Method

Abstract The paper describes the intention of the authors to determine whether it is possible to predict relative belt edge endurance for radial passenger car tires using the finite element method. Three groups of tires with different belt edge configurations were tested on a fleet test in an attempt to validate predictions from the finite element results. A two-dimensional, axisymmetric finite element analysis was first used to determine if the results from such an analysis, with emphasis on the shear deformations between the belts, could be used to predict a relative ranking for belt edge endurance. It is shown that such an analysis can lead to erroneous conclusions. A three-dimensional analysis in which tires are modeled under free rotation and static vertical loading was performed next. This approach resulted in an improvement in the quality of the correlations. The differences in the predicted values of various stress analysis parameters for the three belt edge configurations are studied and their implication on predicting belt edge endurance is discussed.

Institutions and Political Support

2017 ◽  
Author(s):  
Shaun Bowler
Keyword(s):  
Political Institutions ◽  
Political Process ◽  
Institutional Reform ◽  
Institutional Arrangements ◽  
Individual Characteristics ◽  
Political Support ◽  
The Political ◽  
General Expectation ◽  
Using Data

This chapter analyzes to what extent variation in political institutions affects political support. The chapter observes that the existing research is not always clear on which institutions should produce what kind of effect, although a general expectation is that institutional arrangements improve political support when they give citizens an increased sense of connection to the political process. In general then, we should expect institutions that strengthen the quality of representation to strengthen political support. This general expectation is specified in six hypotheses that are tested using data from the ESS 2012. The chapter demonstrates that electoral systems that provide voters with more choice about candidates, multiparty governments, and “responsive” legislatures, correlate positively with political support. However, compared to other macro-level factors and individual characteristics, the effects of political institutions on political support are modest. The chapter concludes that the prospects for institutional reform to strengthen political support are limited.

Quality Assessment of Ethics in Health Care: The Accountability Revolution

1994 ◽  
Vol 20 (1-2) ◽  
pp. 105-128
Author(s):  
Susan M. Wolf
Keyword(s):  
Health Care ◽  
World War Ii ◽  
Quality Assessment ◽  
Central Place ◽  
World War ◽  
New Era ◽  
The Third ◽  
Cost Cutting ◽  
Global Budgeting

Writing in 1988, Arnold Relman heralded the dawning of the “third revolution“ in medical care. The first revolution, at the end of World War II, had inaugurated an Era of Expansion, with an explosion of hospitals, physicians, and research. Medicare and Medicaid were passed, and medicine experienced a golden age of growth. Inevitably, according to Relman, this yielded to an Era of Cost Containment starting in the 1970s. The federal government and private employers revolted against soaring costs, brandishing the weapons of prospective payment, managed care, and global budgeting. Yet these blunt instruments of cost-cutting eventually produced concern over how to evaluate the quality of health care, to promote the good while trimming the bad. Thus Relman announced the arrival of the Era of Assessment and Accountability.This chronology helps explain the current importance of quality. Quality assessment and more recently, quality improvement techniques, occupy a central place in this new era.

Effect of post‐processing treatments on the quality of three‐dimensional printed rice starch constructs

2021 ◽  
Author(s):  
Radhika Theagarajan ◽  
Shubham Nimbkar ◽  
Jeyan Arthur Moses ◽  
Chinnaswamy Anandharamakrishnan
Keyword(s):  
Three Dimensional ◽  
Rice Starch ◽  
Post Processing

Research on the Reliability of Box for Gear Test Bed

2011 ◽  
Vol 121-126 ◽  
pp. 1744-1748
Author(s):  
Xiang Yang Jin ◽  
Tie Feng Zhang ◽  
Li Li Zhao ◽  
He Teng Wang ◽  
Xiang Yi Guan
Keyword(s):  
Power Flow ◽  
Dynamic Performance ◽  
Three Dimensional ◽  
Design Parameters ◽  
The Finite Element Method ◽  
Test Bed ◽  
Kinematics Simulation ◽  
Beveloid Gears ◽  
Overall Performance

To determine the efficiency, load-bearing capacity and fatigue life of beveloid gears with intersecting axes, we design a mechanical gear test bed with closed power flow. To test the quality of its structure and predict its overall performance, we establish a three-dimensional solid model for various components based on the design parameters and adopt the technology of virtual prototyping simulation to conduct kinematics simulation on it. Then observe and verify the interactive kinematic situation of each component. Moreover, the finite element method is also utilized to carry out structural mechanics and dynamics analysis on some key components. The results indicate that the test bed can achieve the desired functionality, and the static and dynamic performance of some key components can also satisfy us.

Study on the Surface Quality of Al2O3 Nano-Films by Ion Beam Sputtering Deposition

2011 ◽  
Vol 148-149 ◽  
pp. 54-57
Author(s):  
Xiao Ping Lin ◽  
Yun Dong ◽  
Lian Wei Yang
Keyword(s):  
Surface Quality ◽  
Ion Beam ◽  
Three Dimensional ◽  
Ion Beam Sputtering ◽  
Sputtering Deposition ◽  
Atomic Force ◽  
Beam Sputtering ◽  
Dimensional Growth ◽  
Different Thickness

The Al2O3 nano-films of different thicknesses (1~100nm) were successfully deposited on the monocrystalline Si surface by using ion beam sputtering deposition. The surface topography and the component of nano-films with different thickness were analyzed. The quality of the surface of nano-films was systematically studied. When the films’ thickness increase, the studies by atomic force microscope (AFM), X-ray photoelectron spectrum（XPS） show that the gathering grain continually grows up and transits from acerose cellula by two-dimensional growth to globularity by three-dimensional growth. The elements O, Al and Si were found on the surface of Al2O3 nano-films. With the thickness of the films increasing, the content of Al gradually increases and the intensity peak of Si wears off, the surface quality of the deposited films is ceaselessly improved

Simulation Analysis of Pneumatic on-off Pressure Mechanism on Printing Press

2010 ◽  
Vol 154-155 ◽  
pp. 1481-1484 ◽  
Author(s):  
Jun Zhong Guo ◽  
Jun Ping Yang
Keyword(s):  
Kinematic Analysis ◽  
Simulation Analysis ◽  
Angular Displacement ◽  
Three Dimensional ◽  
Printing Press ◽  
Work Demand ◽  
Analysis Process ◽  
Adams Software ◽  
Important Basis

The on-off pressure mechanism has an important function to the printing press, the quality of which concerns the working performance of the printing machine and the quality of printed products directly. In this paper, the pneumatic on-off pressure mechanism is discussed; the work demand of order on-off pressure is analyzed. In addition, the three-dimensional digital model and the kinematic analysis process can be achieved on the basis of ADAMS software. What’s more, the on pressure value in the process of on pressure is derived from the kinematic analysis. Lastly, the relation between the motion of on-off pressure mechanism and cylinder’s angular displacement is analyzed, an important basis to the on-off pressure mechanism’s optimal design will be provided.

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