This paper presents solutions to the interactive design of 3D objects with parameterized features and constraints. In the introduction, we describe some new industrial needs in computer Assisted design. In the second ...
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This paper presents solutions to the interactive design of 3D objects with parameterized features and constraints. In the introduction, we describe some new industrial needs in computer Assisted design. In the second part, we give an outline of an object oriented dual modeller we have developed. The third part is devoted to the parametric and constraint based design approach. The subject of the last part is the design by features and the evolution toward functional design of complex 3D objects.
According to the experiment research's need of the direct expansion solar heat pump multi-function machine (DX-SAHPM), this paper introduces the design plan of the computer-aided testing and controlling system(CAT...
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ISBN:
(纸本)1424411351
According to the experiment research's need of the direct expansion solar heat pump multi-function machine (DX-SAHPM), this paper introduces the design plan of the computer-aided testing and controlling system(CAT&C), with temperature, pressure, flux measured by sensor used as inputting parameters, with industry programme computer(IPC) used as micro process unit and with man-machine interface used as real-time monitoring thermal physical parameters. The CAT&C system can complete automatic measuring, monitoring and saving of all real-time experiment data, and it can also extend its function so it can control some parameters(such as flux) intelligently according to the real status. The CAT&C system's testing result in spring and winter is well consistent with theory calculation, which indicates that the design plan is reasonable and the data are exact and that at the same time it also offers reliable hardware platform for the future study of DX-SAHPM heat pump. The CAT&C system can also test and adjust thermal parameters for the other similar thermal system. This paper emphatically introduces the measuring points' layout, system monitoring control principle and method, and it also analyzes the experimental testing data and intellective control.
In the complex workstation of a CAD designer, there are many opportunities to apply sophisticated technologies to increase efficiency at the interface. The use of speech technologies, speech recognition and speech gen...
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ISBN:
(纸本)0818606428
In the complex workstation of a CAD designer, there are many opportunities to apply sophisticated technologies to increase efficiency at the interface. The use of speech technologies, speech recognition and speech generation will be assessed to offload some of the high visual-manual task requirements in this environment. A methodology for applying speech technologies is presented that can be used by both system designer and human engineer which considers both the system and user performance needs. The process of making these application tradeoffs is discussed to ensure user and machine work synergistically in a natural, verbal manner against an otherwise visual-manual task environment.
It is proved that the quality and cost of production is affected by the product design quality to a large extend, so the evaluation on product design is very necessary. The problem of traditional evaluation method is ...
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ISBN:
(纸本)9781424436705
It is proved that the quality and cost of production is affected by the product design quality to a large extend, so the evaluation on product design is very necessary. The problem of traditional evaluation method is analyzed in this paper, and the conception of product design quality evaluation in life cycle is proposed. A flexible hierarchy evaluation index system structure is set up to support the computer-aided evaluation. According to the characteristic of evaluation index system the method of F-G (Fuzzy and Grey theory) evaluation is used, which provide a new method to realize the comprehensive evaluation of product design quality.
This paper analyzes the design and modeling measurement of three-dimensional animation based on computer-aided node mining. First, with the development of computer technology, animation technology has gradually evolve...
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In lung cancer diagnosis, the design of robust computeraided Diagnosis (CAD) systems needs to include an adequate differentiation of benign from malignant nodules. This paper presents a CAD system for the classificat...
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ISBN:
(纸本)9789897582271
In lung cancer diagnosis, the design of robust computeraided Diagnosis (CAD) systems needs to include an adequate differentiation of benign from malignant nodules. This paper presents a CAD system for the classification of lung nodules in chest Computed Tomography (CT) scans as the way to diagnose lung cancer. The proposed method measures a set of 295 heterogeneous characteristics, including morphology, intensity or texture features, that were used as input of different KNN and SVM classifiers. The system was modeled and trained using a groundtruth provided by specialists taken from a public lung image dataset, the Lung Image Database Consortium and Image Database Resource Initiative (LIDC-IDRI). This image dataset includes chest CT scans with lung nodule location together with information about the degree of malignancy, among other properties, provided by multiple expert clinicians. In particular, the computed degree of malignancy try to follow the manual labeling by the different radiologists. Promising results were obtained with a first order SVM with an exponential kernel achieving an area under the receiver operating characteristic curve of 96.2 +/- 0.5% when compared with the groundtruth provided in the public CT lung image dataset.
Subject selection for usability testing of computer documentation is discussed. Many of the issues presented are applicable to product testing or testing of other technical documentation, but the author's experien...
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Subject selection for usability testing of computer documentation is discussed. Many of the issues presented are applicable to product testing or testing of other technical documentation, but the author's experience has been primarily with documentation of computer software and systems. She focuses on three major activities: (1) developing appropriate user profiles;(2) locating and obtaining suitable subjects;and (3) making decisions related to the experimental design (such as sample size and population groups).
Corner Block List(CBL) was recently proposed as an efficient representation for MOSAIC packing of rectangles. Although the original method is really innovative, there still remains room of improvement for our purpose....
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ISBN:
(纸本)0769514413
Corner Block List(CBL) was recently proposed as an efficient representation for MOSAIC packing of rectangles. Although the original method is really innovative, there still remains room of improvement for our purpose. This paper proposes a compact algorithm for placement based on corner block list. By introducing the dummy blocks in CBL, our algorithm can intellective employ dummy blocks in the packing to represent the placement including empty rooms, which corner block list cannot represent. Our algorithm can obtain the fast convergence to an optimal solution. Based on the compact approach, we propose a new way to handle arbitrary shaped rectilinear modules. The experimental results are demonstrated by some benchmark data and the performance shows effectiveness of the proposed method.
Visual impact analysis is a software visualisation technique that lets software maintainers judge the impact of proposed changes and plan maintenance accordingly. An existing CASE tool uses a directed acyclic graph di...
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ISBN:
(纸本)0818687797
Visual impact analysis is a software visualisation technique that lets software maintainers judge the impact of proposed changes and plan maintenance accordingly. An existing CASE tool uses a directed acyclic graph display derived from decomposition slicing of a program for visual impact analysis. In this paper, we analyse the graph display and show that it is semantically ambiguous and fails to show important information, We propose requirements for an improved display based on a definition of "interference" between variables in a maintenance context. The design for a new display is presented, with a series of examples to illustrate its effectiveness. The display is focused on providing a straightforward method to analyse the impact of changes.
A new scheme for combinational linear expansion is proposed for decompression of scan vectors. It has the capability to adjust the width of the linear expansion each clock cycle. This eliminates the requirement that e...
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A new scheme for combinational linear expansion is proposed for decompression of scan vectors. It has the capability to adjust the width of the linear expansion each clock cycle. This eliminates the requirement that every scan bit-slice be in the output space of the linear decompressor. Depending on how specified the current bit-slice is, the decompressor may load all scan chains or may load only a subset of the scan chains. This provides the nice feature that any scan vector can be generated using the proposed scheme regardless of the number or distribution of the specified bits. Thus, the proposed scheme allows the use of any ATPG procedure without any constraints. Moreover, it allows greater compression to be achieved than fixed width expansion techniques since the ratio of the number of scan chains to the number of tester channels can be scaled much larger. A procedure for designing and optimizing the adjustable width decompression hardware and obtaining the compressed data is described. Experimental data indicates that the proposed scheme is simple yet very effective.
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