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随着电信市场竞争的愈演愈烈及电信市场结构的变化,我国电信企业面临持续增长的压力越来越大,企业要实现可持续发展,就必须不断开发新的电信业务。如今,产品集成创新能力已成为衡量企业市场竞争力的一项重要内容。建立产品集成创新能力综合评价体系能对我国电信企业产品创新能力能够动态地把握和监控,对存在的问题能及早发现,有利于不断提升我国电信企业的产品创新能力。因此,有必要建立一个科学、系统的企业产品集成创新能力综合评价体系,并据此采用科学的评价方法进行综合评价。 相似文献
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基于模糊层次分析法的大学生综合素质评价研究 总被引:2,自引:1,他引:2
为了避免现有层次分析评价方法在大学生综合素质评价过程中存在不足的目的;采用模糊层次分析方法,做了一个对大学生综合素质进行定性和定量的综合多因素评价实验;获得了评价指标的层次结构模型,以及大学生综合素质定性和定量评价的结果;得到采用模糊层次分析法能够避免不足,方便有效地解决大学生综合素质评价问题的结论;具有简单、科学、使用方便的特点。 相似文献
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怎样科学正确地评价一款笔记型电脑液晶显示屏性能的好坏是笔记型电脑制造者和使用者最关注的问题,特别是生产过程产品质量的检测尤为重要。本文根据液晶显示屏评价过程中一些相关性能参数多而评价尺度模糊等特点,提出利用模糊理论对其性能参数进行模糊综合评价。论文从生产实际出发,结合专家经验,构建了液晶显示屏性能的模糊评价模型,并应用构建的评价模型对市场上几款笔记型电脑的液晶显示屏进行了评价实验,通过评价实验证实了该模型具有评价方法的科学、简单、可靠、实用等特点。 相似文献
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通过引入模糊数学中的模糊综合评价方法,为传输网评估建立了科学的模糊综合评价模型,包括按照网络实际选取适合的评估指标、确定指标权重,对现有网络结构进行评估测试和应用,取得良好效果,对完善网络布局、提高资源利用率、合理科学地优化网络具有重要意义. 相似文献
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怎样科学正确地评价一款笔记型电脑液晶显示屏性能的好坏是笔记型电脑制造者和使用者最关注的问题,特别是生产过程产品质量的检测尤为重要.本文根据液晶显示屏评价过程中一些相关性能参数多而评价尺度模糊等特点,提出利用模糊理论对其性能参数进行模糊综合评价.论文从生产实际出发,结合专家经验,构建了液晶显示屏性能的模糊评价模型,并应用构建的评价模型对市场上几款笔记型电脑的液晶显示屏进行了评价实验,通过评价实验证实了该模型具有评价方法的科学、简单、可靠、实用等特点. 相似文献
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制造企业供应商信用等级的模糊综合评价 总被引:1,自引:0,他引:1
针对目前制造企业供应商信用等级管理中存在的若干问题,提出采用模糊综合方法对供应商信用等级进行科学评价.在建立模糊评估模型的基础上,进行综合评估和定量计算,通过例子表明,该方法简单、易行、准确. 相似文献
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Michael Reilly 《半导体技术》2004,29(12)
DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system. 相似文献
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Thomas M.Trexler 《半导体技术》2004,29(5)
From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test. 相似文献
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The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation. 相似文献
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The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high. 相似文献
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Today, micro-system technology and the development of new MEMS (Micro-Electro-Mechanical Systems) are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible. 相似文献
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GU Min-fen LIANG Zhong-cheng WANG Ren-zhou DONG Xiang-mei ZHANG Pei-ming CHEN Jia-bi 《光电子快报》2008,4(2):150-152
Waveguide multilayer optical card (WMOC) is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling & processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic (VB) language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor. 相似文献
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Qi-jiang Ran Pei-de Han Yu-jun Quan Li-peng Gao Fan-ping Zeng Chun-hua Zhao 《光电子快报》2008,4(4):239-242
This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel's. 相似文献
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The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well. 相似文献
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Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems. 相似文献
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An insert layer structure organic electroluminescent device(OLED) based on a new luminescent material (Zn(salen)) is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn(salen)/Liq/LiF/A1/CuPc/NPD/Zn(salen)/Liq/LiF/A1. Effective insert electrode layers comprising LiF(1nm)/Al(5 nm) are used as a single semitransparent mirror, and bilayer cathode LiF(1 nm)/A1(100 nm) is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect. 相似文献