我国农村信息化电子商务的发展研究

农村电子商务是农村信息化发展至今的一个成功应用,本文从农村信息化到农村电子商务的发展入手,对农产品电商到产业集群的扩展等方面中我国农村电子商务的发展进行了分析,并对相关文献进行了梳理和总结,提出今后存在的挑战和机遇,最后对农村电子商务发展中的特点进行了总结。     

临沧农村电子商务发展存在的问题及对策建议

通过对临沧农村电子商务现状的调研分析,指出临沧农村电子商务主要存在品牌效应不强、保障体系不完善、电商人才缺乏等问题,并提出相应对策,以期能对临沧农村电子商务发展决策和同类研究有一定借鉴作用.     

湖南省发展研究

农业电子商务结合传统的生产、管理、销售以及现代信息化运作模式,实现农业农村与信息化产业的完美结合,实现农业信息化、智能化、高效化,成为了实现社会主义新农村建设的一大根基。本文研究电子商务在湖南农业农村农产品中的应用发展,农业电子商务网站体系的建立、实施、发展是农业发展的需要,是农村进步的奠基石,对于实现作为中部农业大省的湖南省农业和农村信息化,缩小数字鸿沟,提高农产品市场竞争力,促进农村社会全面进步具有很大意义。     

互联网支付环境下农村电子商务应用研究

本文以国家发展新农村战略规划为背景,结合我国农业生产的特点,尝试性的对新农村电子商务平台的建设进行了规划分析.设计分析了新农村双向电子商务平台,对其功能模块和供求匹配模型进行了分析.为保证双向电子商务的有效建设,对农产品电子商务安全保障体系和组织建设模式进行了研究分析.最后根据目前国内农村电子商务的发展态势,给出了推动我国新农村电子商务发展的相关建议.     

关于农村电子商务的发展思路与对策的探讨

本文分析了农村电子商务的重大意义、发展现状、问题,论述发展思路,提出了加快农村电子商务发展的措施建议。     

我国农村电子商务发展关键要素分析

受制于我国农村实际社会经济环境，我国农村电子商务的发展经历了长时间的摸索。政府一直积极致力于探索和推动自上而下的推广模式，帮助和带动农村网络的接入和农民信息的获取。近几年，农村电子商务开始出现一种自发的自下而上的发展模式，即具有创新意识的人开始利用网络完成农村易得产品的市场交易，并带动其他农村人员进入电子商务。自下而上的模式为我国农村电子商务的发展注入了新的活力，客观上推动了我国农村电子商务的发展。本文基于实践调研，归纳总结出我国农村电子商务发展演进模型和发展要素模型，并将这些发展要素提炼为我国农村电子商务发展的核心要素和外围要素，分析了他们相互之间如何驱动农村电子商务的发展。     

农业移动电子商务发展对策探讨

移动电子商务依靠其自身的优势,成为电子商务领域发展的趋势。本文在阐述了移动电子商务理论的基础上,客观分析了我国移动电子商务发展的现状,选取农村信息化建设中的农业移动电子商务为主要研究对象,探索了农业移动电子商务运行模式,并对农业移动电子商务运行模式、盈利模式、推广方式、安全支付等方面存在的问题提出相应对策。     

基于NP的千兆电子商务应用系统安全防火墙设计

总结千兆防火墙的实现方案,分析网络处理器(NP)的功能和体系结构。针对电子商务系统分布式系统的特点,设计一种基于NP的千兆电子商务应用系统安全防火墙设计方案,并对该方案中的关键技术进行探讨。     

依托电子商务缔造电力航母——我国电力行业电子商务应用研究（连载1）

近年来行业电子商务实践应用如日中天，然而，不同行业的具体情况并不一样，其电子商务应用必然有所不同。行业电子商务也出现了理论研究跟不上实践应用的不利局面。西安交通大学电子商务研究所与《电子商务》合作，发表主题为“部分行业电子商务应用研究”连载文章，同时选取中小企业、电力行业、网络广告、电信业、银行业、证券业、网络游戏等领域，进行电子商务的应用分析研究，根据行业电子商务应用现状，进行分析和评价。我们希望，通过对这些行业提出电子商务应用的对策与建议，起到促进企业信息化发展的作用。     

基于NP的千兆电子商务应用系统安全防火墙设计

总结千兆防火墙的实现方案,分析网络处理器(NP)的功能和体系结构.针对电子商务系统分布式系统的特点,设计一种基于NP的千兆电子商务应用系统安全防火墙设计方案,并对该方案中的关键技术进行探讨.     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

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.     

Cost-effective test solutions for smart card and other integrated flash applications

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.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

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.     

An improved parallel thinning algorithm with two subiterations

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.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

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.     

Development of the readout system for waveguide multilayer optical card

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.     

Study of waveguide coupling efficiency in hybrid silicon lasers

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.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

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.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

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.     

New insert layer structure OLEDs

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.