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Data Conversion Among Different Databases Under an Integrated Network Environment 被引量:2
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作者 梁允荣 高玮玲 杨茜 《Journal of Beijing Institute of Technology》 EI CAS 2001年第2期209-214,共6页
Method for data conversion of heterogeneous DBMS's in the integrated network environment is introduced. The technical approach used can perform data conversion of heterogeneous databases located on different nodes... Method for data conversion of heterogeneous DBMS's in the integrated network environment is introduced. The technical approach used can perform data conversion of heterogeneous databases located on different nodes of the network, such as Oracle, Sybase, Informix, MS SQL Server, SQL Anywhere and Foxpro. The conversion system adopts the Client/Server architecture and provides visual integrated interface for users. 展开更多
关键词 heterogeneous DB data conversion CLIENT/SERVER visual interface
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Image Processing on Geological Data in Vector Format and Multi-Source Spatial Data Fusion
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作者 Liu Xing Hu Guangdao Qiu Yubao Faculty of Earth Resources, China University of Geosciences, Wuhan 430074 《Journal of China University of Geosciences》 SCIE CSCD 2003年第3期278-282,共5页
The geological data are constructed in vector format in geographical information system (GIS) while other data such as remote sensing images, geographical data and geochemical data are saved in raster ones. This paper... The geological data are constructed in vector format in geographical information system (GIS) while other data such as remote sensing images, geographical data and geochemical data are saved in raster ones. This paper converts the vector data into 8 bit images according to their importance to mineralization each by programming. We can communicate the geological meaning with the raster images by this method. The paper also fuses geographical data and geochemical data with the programmed strata data. The result shows that image fusion can express different intensities effectively and visualize the structure characters in 2 dimensions. Furthermore, it also can produce optimized information from multi-source data and express them more directly. 展开更多
关键词 geological data GIS-based vector data conversion image processing multi-source data fusion
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RELIABILITY ASSESSMENT OF ENTROPY METHOD FOR SYSTEM CONSISTED OF IDENTICAL EXPONENTIAL UNITS 被引量:5
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作者 SunYouchao ShiJun 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2004年第4期502-506,共5页
The reliability assessment of unit-system near two levels is the mostimportant content in the reliability multi-level synthesis of complex systems. Introducing theinformation theory into system reliability assessment,... The reliability assessment of unit-system near two levels is the mostimportant content in the reliability multi-level synthesis of complex systems. Introducing theinformation theory into system reliability assessment, using the addible characteristic ofinformation quantity and the principle of equivalence of information quantity, an entropy method ofdata information conversion is presented for the system consisted of identical exponential units.The basic conversion formulae of entropy method of unit test data are derived based on the principleof information quantity equivalence. The general models of entropy method synthesis assessment forsystem reliability approximate lower limits are established according to the fundamental principleof the unit reliability assessment. The applications of the entropy method are discussed by way ofpractical examples. Compared with the traditional methods, the entropy method is found to be validand practicable and the assessment results are very satisfactory. 展开更多
关键词 Reliability synthesis data conversion Entropy method Information quantity Exponential unit
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Conversion of induction heating temperature from ANSYS to DEFORM 被引量:1
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作者 BAI Yunfeng JIANG Hong 《Baosteel Technical Research》 CAS 2011年第4期8-11,共4页
In the production of hot extrusion pipes, the billet will be heated in an induction furnace, before piercing or extrusion,to a certain temperature. The induction heating temperature field profile in the billet will ex... In the production of hot extrusion pipes, the billet will be heated in an induction furnace, before piercing or extrusion,to a certain temperature. The induction heating temperature field profile in the billet will exert an influence on the deformation processes. The study has developed an data conversion program to convert the temperature data from induction heating by ANSYS to deformation simulation software DEFORM; therefore, not only the relatively accurate temperature field can be made available, compared with the usually assumed uniform temperature field, but also the connection between induction heating and deformation can be established, which is essential to evaluate the processing parameters. Numerical simulation of the piercing processes of different temperature fields by induction heating was carded out, and the results have shown that the different initial temperature fields in the billet can lead to different deformation curves, which indicates that the conversion program is necessary to study the production process of hot extrusion pipes. 展开更多
关键词 induction heating numerical simulation data conversion BILLET PIERCING
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国外模拟集成电路近期发展动态
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作者 李开成 《微电子学》 CAS 1988年第5期1-8,共8页
近年来,由于器件工艺水平的提高和电路设计技术的改进,模拟集成电路获得了很大的发展。席卷世界先进工业国家的三“A”革命(工厂自动化、办公室自动化和家庭自动化)和各种高精尖的军事装备,使品种繁多的模拟电路找到了用武之地。目前,... 近年来,由于器件工艺水平的提高和电路设计技术的改进,模拟集成电路获得了很大的发展。席卷世界先进工业国家的三“A”革命(工厂自动化、办公室自动化和家庭自动化)和各种高精尖的军事装备,使品种繁多的模拟电路找到了用武之地。目前,国外半导体厂家正在竞相开发新的品种,并且不断扩大其应用范围,本文拟对应用比较广泛的几种主要模拟集成电路在国外的发展情况作一简单介绍。 展开更多
关键词 Analog IC Operational Amplifier High freguency linear amplifier Non-linear amplifier Integrated voltage regulator data conversion circuit
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All-optical clock recovery from 10-Gb/s NRZ data and NRZ to RZ format conversion
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作者 尹丽娜 闫玉梅 +2 位作者 周云峰 伍剑 林金桐 《Chinese Optics Letters》 SCIE EI CAS CSCD 2006年第1期4-7,共4页
A non-return-to-zero (NRZ) to pseudo-return-to-zero (PRZ) converter consisting of a semiconductor optical amplifier (SOA) and an arrayed waveguide grating (AWG) is proposed, by which the enhancement of clock f... A non-return-to-zero (NRZ) to pseudo-return-to-zero (PRZ) converter consisting of a semiconductor optical amplifier (SOA) and an arrayed waveguide grating (AWG) is proposed, by which the enhancement of clock frequency component and clock-to-data suppression ratio of the XRZ data are evidently achieved. All- optical clock recovery from XRZ data at 10 Gb/s is successfully demonstrated with the proposed XRZ-to- PRZ converter and a mode-locked SOA fiber laser. Furthermore, XRZ-to-RZ format conversion of 10 Gb/s is realized bv using the recovered clock as the control light of terahertz optical asymmetric demultiplexer (TOAD), which further proves that the proposed clock recovery scheme is applicable. 展开更多
关键词 NRZ very All-optical clock recovery from 10-Gb/s NRZ data and NRZ to RZ format conversion data
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