this paper analyzed the need of driving behavior study in emergency. the current research on driving behavior was reviewed. Driver's cognitive model and control model in emergency were explored. the content and te...
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the article deals withthe application of the method for computer modeling and simulation at solving some issues in the area of electrostatic technology. It focuses on the processes in electrostatic separation and pre...
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ISBN:
(纸本)9788021440944
the article deals withthe application of the method for computer modeling and simulation at solving some issues in the area of electrostatic technology. It focuses on the processes in electrostatic separation and precipitation. computer simulation is highly required in equipment design and their diagnostics in critical operating states using theoretical calculations and experimental data evaluation. the presented computer models may be applied both by project and design engineers using the most advanced computer-aideddesign of electrostatic technologies.
Based on the Tianjin Shi courtyard as an example, this paper analysis auspicious patterns elements of Chinese traditional culture, gets the preliminary understanding of Chinese cultural connotation and discusses the n...
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this paper is the preliminary study of the mechanical product identity system designtheory, based on which the author analyses and illustrates the use of this theory in practical product design and develop, and then ...
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作者：
Li, XBChinese Acad Sci
Natl Lab Pattern Recognit Inst Automat Med Imaging Comp Grp Beijing 100080 Peoples R China
Geometric property estimation of the scattered point data is a key task in reverse engineering. A common approach is to estimate the local surface geometric properties, such as normal vectors and curvatures, at each p...
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ISBN:
(纸本)0769524737
Geometric property estimation of the scattered point data is a key task in reverse engineering. A common approach is to estimate the local surface geometric properties, such as normal vectors and curvatures, at each point by locally fitting a low order parametric polynomial surface to a neighborhood of its nearest points. However existing parametric surface methods do not always achieve satisfactory estimates because of theoretical and practical reasons. Motivated by improving geometric properties estimation we propose a novel approach based on local quadric surface fitting. Experimental results are presented to verify the feasibility of the proposed method.
Although there have been numerous design rationale research projects, few of them has received wider adoption. Because current design rationale systems are not demonstrated the value of the approach in practice due to...
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ISBN:
(纸本)9781479925766
Although there have been numerous design rationale research projects, few of them has received wider adoption. Because current design rationale systems are not demonstrated the value of the approach in practice due to lack of the design rationale knowledge evaluation. In this paper, we present a new design rationale knowledge evaluation method which is to measure the design rationale knowledge comprehensive value. In this method, we also characterizes the design rationale knowledge value from four perspectives, and the method can provide object metric and selection basis for the design rationale knowledge reuse during the product design process. Partial design process of the bending die is taken as an example to verify the feasibility and validity of the proposed method.
Comprehensive understanding of knowledge and the structure of wood flooring materials and construction, grasp the nature of wood and floor selection method, complex variety of decorative materials in front of varietie...
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Nowadays, many commercial CAD systems support history-based, constraint-based and feature-based modeling. Unfortunately, most systems fail during the re-evaluation phase when various kind of topological changes occur....
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ISBN:
(纸本)0769524737
Nowadays, many commercial CAD systems support history-based, constraint-based and feature-based modeling. Unfortunately, most systems fail during the re-evaluation phase when various kind of topological changes occur. this issue is known as ''persistent naming" which refers to the problem of identifying entities in an initial parametric model and matching them in the re-evaluated model. Most works in this domain focus on the persistent naming of atomic entities such as vertices, edges or faces. But very few of them consider the persistent naming of aggregates like shells (connected set of faces). We propose in this paper a complete ftamework for extending a persistent naming model of atomic entities in order to identify and match any kind of shells based on their underlying topology.
the popularities of the development of design procedures and thermal design operations for the construction of a general structure of a computer-aidedthermal design of technical objects withthe aim of providing thei...
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the study of automobile styling is one of the difficult problems in the field of automobile design. Research on the automobile styling from aesthetics is the main motivation of industrial design research. this paper d...
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ISBN:
(纸本)9781424415786
the study of automobile styling is one of the difficult problems in the field of automobile design. Research on the automobile styling from aesthetics is the main motivation of industrial design research. this paper depicts the process and pattern of automobile styling design adopting feature based method in a cognitive approach.. the experiment designed to acquiring the feature knowledge about design process have been carried out, using protocol analysis and sketch analysis which can detect the cognition and thinking in the design process. Based on the results of the experiment, the analysis was made from three aspects: the meaning of feature, the cognition mode and the styling design process: then, a model of feature representation is proposed which consists of the-feature library and the feature manipulating rules. On the basis of the model, a computeraided styling (CAS) system is developed which can aid designers in automobile styling design.
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