Application of UML Business Modeling in E-commerce System

The development of E commerce is booming. Now the management of some domain is converting from tradition to E commerce, this needs the application and integration of the latest information technologies for the maximum usage and share of network information resources. As a modeling language, Unified Modeling Language (UML) is well defined, easy to specify, powerful in function and applied widely. Business model concentrates on the business around the system, not every project requires business model. However, there are many situations where business modeling adds a great deal of value. Establishing system business model is the primary task when people make use of UML to establish E commerce system model and develop software system. By E commerce system the authors expound the use case, and propose how to use correct method to establishing E commerce system business model.     

小麦贸易格局的演变对中国粮食安全的影响——基于“粮食禁运”的理论分析

当前影响中国粮食安全的因素主要有两方面,生产和贸易。从近年来的生产来看,产量基本保持稳定,因此影响中国粮食安全的重要因素将是国际贸易,而对国际贸易影响较大的因素主要有国际贸易格局的变化。基于此,本文从澳大利亚开放粮食市场出发,分析由此可能带来的贸易格局的演变,从粮食禁运的视角分析其对中国粮食安全的影响,通过建立博弈模型进行理论分析,得出新的小麦贸易格局将对中国的粮食安全产生诸多不利影响。     

Investigation of e‐commerce in China in a geographical perspective

In recent years, e‐commerce has become a phenomenal symbol for the ongoing socio‐economic transformation in China. Driven by the growth of the Internet and cyberspace, e‐commerce changes both the traditional patterns of economic transactions and the social relations embedded in social activities. E‐commerce is a new catalyst for economic growth in China as it reduces restrictions to market access and the costs of transaction. This research examines the geography of e‐commerce in China within a theoretical framework grounded by social theory and neoclassical economics. After presenting a background of the development of e‐commerce in China, the spatiality of e‐commerce and its correlation to socio‐economic variables are examined with both quantitative and geovisualization techniques. Results of this research address that the growth of e‐commerce in China presents a nationwide inequality constrained by local economic, politic, and infrastructure conditions. The growth of e‐commerce in China presents a hybrid feature in terms of spatiality, which relies on structures in both cyberspace and physical space. Policy implications and suggestions for future research were suggested based on these empirical results. A discussion of limitations associated with this research and a concluding note close the research.     

A Mutual Strong User Identification System in Internet/Intranet

An enterprise needs electronic commerce in Internet/Intranet environment whose security depends basically on User Identification. After studying on present identification methods and protocol, we present, in this paper, a mutual Strong User Identification system based on Kerberos protocol, public key cryptosystem, digital certificate and smart card. Several limitations of Kerberos protocal are overcome. This system satisfies the speed requirement of mutual real time identification. Moreover,it can simplify the actions of key management, distribution and storage, relieves the client's burden.     

The formation of agricultural e‐commerce clusters: A case from China

Agricultural e‐commerce clusters are new phenomena that have emerged in rural China. In examining the case of Shuyang County in Jiangsu Province, this paper puts forward an integrated model revealing the formation mechanism of agricultural e‐commerce clusters. The paper shows that the formation of agricultural e‐commerce clusters involves four processes of technology introduction, technology diffusion, quality crisis, and industrial agglomeration based on elements such as industry bases, e‐commerce platforms, network facilities, logistics services, entrepreneurial talent, local government, and market demand. Rural social networks and imitation behaviors promote technology diffusion by reducing the cost of technology introduction, and industrial agglomeration is found in the economies showing a deepening of labor divisions and geographic agglomeration. Throughout the formation process, a quality crisis may occur due to a race to the bottom and the opportunistic behaviors of local farmers. This work suggests that regional e‐commerce development is a systematic project. Governments of developing countries should not only realize the positive impacts of e‐commerce for the development of the agricultural industry but also recognize the premise and logic of how e‐commerce can play a prominent role.     

中国农村电子商务网站建设探析

对当前中国农村的"三农"问题进行深入分析和研究,提出发展农村电子商务来解决"三农"问题的构想。同时对中国农村电子商务的发展现状、存在的问题,必要性和可行性等进行了尝试性的探析。     

Urban–Rural Differences in Internet Usage,e‐Commerce,and e‐Banking: Evidence from Italy

ABSTRACT By reducing the cost of performing isolated economic activities in remote areas, information technology might serve as a substitute for urban agglomeration. The paper assesses this hypothesis using data on Italian households' usage of the Internet, e‐commerce, and e‐banking. The results do not support the argument that the Internet reduces the role of distance. Internet usage is much more frequent among urban consumers than among their non‐urban counterparts. The use of e‐commerce is basically unaffected by the size of the city where the household lives. Geographically remote consumers are discouraged from purchasing goods by the fact that they cannot inspect them beforehand. Leisure activities and cultural items (i.e., books, CDs, and tickets for museums and theaters) are the only goods and services for which e‐commerce is used more in isolated areas. Finally, e‐banking bears no relationship to city size. In choosing a bank, non‐urban customers give more importance to personal acquaintance than do urban clients, partly because bank account holders in remote areas are more likely to have taken out a loan from their bank.     

Regional Development Within National Industrial Policies: An Analysis of the British Coal Industry

Three variations in regional policy distinguish the conduct of the nationalized British coal industry—social industry, state industry, and state commerce. Each variation takes a distinct approach to natural and human resource development in chronically depressed regions such as the peripheral coal fields in Britain or the Appalachian coal fields in the United States. Central to the variation are recognition of the factor of decline that E. F. Schumacher analyzed in the 1950s and the mitigation of social welfare consequences of shifts in production and investment. Schumacher's analysis raised policy issues of social welfare, resource development, and energy. These emerged again in the British coalminers'strike of 1984–85. Broad issues like these are likely to surface in regions where employment is concentrated in a declining industry facing new and severe competition.     

福建农业电子商务发展模式研究

介绍了农业电子商务的两种基本的发展模式;进而说明福建当前实施农业电子商务的主要运营模式,并通过对福建农业信息网上农产品的供求信息配对率和点击率统计分析得出两个结论,即福建农业电子商务发展相对滞后和农产品的供求信息配对率跟点击率之间是不相关的关系;最后,文章根据统计分析的结果对福建农业电子商务的发展前景进行预测。     

Main Factor Analysis on the Sustainable Growth of the Public Companies in China

With the sample of Chinese A-stock public companies which appear on Stock Exchange of Shanghai and Shenzhen before 1994,and by using the factor method and regression,this paper finds out and explains the equilibrium relation among sustainable growth of Chinese public companies,profitability and capability of debt-repayment and capability of operation. This paper discover: (1)The sustainable growth rate of a public company is in inverse proportion to asset-debt ratio, but in direct proportion to current debt ratio as well as acid test ration. (2)There is a positive correlation between the sustainable growth rate of a public company and its profitability. That's to say, the higher earning rate, the higher sustainable growth rate.(3)The sustainable growth rate of all public firms other than those of the commerce industry is positively correlated to the growth capacity.(4)Apart from the commerce industry, there is a positive correlation between the sustainable growth and the operation capability of the public companies, regardless of their integral sample, industries sample and scale sample.     

果树人工种子研究进展

人工种子在果树种苗生产和育种等方面具有很多天然种子无法比拟的优势,但因受到多种因素的限制,目前仍未实现大规模的商业应用。为此,笔者从人工种子制作技术研究进展和人工种子在几种重要果树上的应用2个方面,系统阐述果树人工种子的研究进展,提出高质量同步化繁殖体的获得、包埋技术、转株率和存活率4个因素是限制人工种子商业应用的主要因素,也是今后果树人工种子技术的研究重点。     

Information security system of digital enterprise and itsimplementation scheme

The general framework and security demands of digital enterprises are analyzed. The information security system is constructed, which includes physical security, network security, support layer system security, application layer system security, data and documents security. Aiming at the security of internal information security such as data and documents, a comprehensive solution including identity authentication, centralized equipments control, document security management, document encryption, and security audit are put forward. Based on the above information security system, an implementation scheme for typical digital enterprise is proposed.     

基于BP神经网络的农业电子商务网站评价研究

提出了适合农业电子商务网站的评价指标体系。建立农业电子商务网站的BP神经网络评价模型,通过BP神经网络对数据进行训练、测试,对提出的评价指标体系进行了验证。通过对结果的分析发现,建立的基于BP神经网络的评价模型在农业电子商务网站评价中具有可行性,在网站建设方面具有较强的参考价值。     

大豆籽粒维生素E含量的QTL分析

维生素E(VE)具有提高人体免疫力、抗癌、预防心血管疾病等保健作用,从大豆中提取的VE安全性更高。本研究采用高效液相色谱技术(HPLC)检测大豆BIEX群体(Essex×ZDD2315)维生素E的α-生育酚、γ-生育酚和δ-生育酚含量。应用QTLNetwork 2.1软件分别检测到8个和12对控制大豆维生素E及组分含量的加性和互作QTL。α-生育酚含量加性和互作QTL累计贡献值分别为8.68%(2个)和15.57%(4对),γ-生育酚含量加性和互作QTL累计贡献值分别为8.59%(2个)和11.57%(2对),δ-生育酚含量加性和互作QTL累计贡献值分别为5.44%(1个)和17.61%(3对),维生素E总含量的加性和互作QTL累计贡献值分别为11.39%(3个)和9.48%(3对)。未检测到维生素E及组分含量和环境互作的QTL。未定位到的微效QTL累计贡献值为66.16%~75.32%,说明未定位到的微效基因的变异占2/3以上。各性状的遗传构成中,未检测出的微效QTL份额最大,加性QTL和互作QTL贡献相差不大。在育种中应考虑常规方法聚合微效QTL与标记辅助方法聚合主要QTL相结合。     

Fuzzy Analysis of Kind Gathering of Object Selection in Compatibility of Online Selling Products

By applying fuzzy mathematics , the authors bring forward the qualitative analysis the theory structure of economics and search cost,and quantitative anylsis method applied in eraluating which kind of product are best suited for onlie selling. Then, six kinds of products are chosen toprore it that the method is effective. At last, the innoration in e commerce medel like onlike selling is also discussed.     

月季育种及组培研究进展

摘 要：文章综述了月季国内外研究概况和发展趋势,以及月季组织培养中的基本技术操作。阐述了腋芽萌发、器官发生、体细胞胚胎发生三个方面建立月季组培体系的途径,并讨论了月季组织培养过程中所遇到问题和建议。     

中国食用菌产业现状与发展

本文阐述了我国食用菌生产现状与进出口贸易情况,分析了食用菌产品质量安全问题,提出了为规避贸易壁垒,以提高食用菌质量和产品安全为重点的发展思路。     

Security Condition and Countermeasures of the Information Integrated Platform in Manufacturing Enterprises

Information integrated platform in manufacturing enterprises is a kind of software and hardware platform which supports application development, application integration and system running in complex information environment. The information processing of enterprises relys on this platform. Due to the increasing number of computer security problems, much attention must be paid to the security of information-integrated platform in manufacturing enterprises. The current security condition of information-integrated platform in manufacturing enterprises is introduced and the related countermeasures is also produced. In order to ensure the security, the conclusion that secure management system should be combined with secure management techniques is drawed .     

大花蕙兰育种研究进展

大花蕙兰为兰科兰属植物,具有极高的观赏价值和商业价值。本研究综述了近年来大花蕙兰杂交育种、诱变育种和基因工程研究概况和发展趋势,对核型分析、亲本选择、分子标记辅助育种和转基因方面的研究进行了总结。提出了以组织培养为主要手段,开展兰花多种途径育种具有广阔的前景。     

两型社会建设背景下长株潭城市群耕地安全性评价

摘要：耕地是一种具有经济、生态和社会价值的重要资源,它的数量、质量和生态状况关乎一个地区资源节约和环境友好型社会的建设。本论文运用长株潭城市群耕地利用历史数据,采取层次分析、障碍度分析等研究方法,以两型社会建设理论为依据,在定性描述耕地资源安全内涵的基础上,从资源节约、环境友好两个方面构建评价指标体系,对长株潭城市群耕地资源安全状况进行了评价和障碍度诊断。研究的主要结论是：（1）耕地资源安全具有系统性特征,其内涵涵盖数量安全、质量安全和生态安全,并成为一个有机整体;（2）研究区耕地安全总体及数量、质量和生态状况差异显著,1990-2007年间长株潭城市群耕地安全的总体状况趋于变坏,安全评估得分值从1990年的2.125降到2007年的0.158,表明该地区耕地资源安全存在制约因素;（3）通过障碍因素分析发现,研究区不同时段障碍因素不同,1990-1995年,耕地安全的障碍因素是城市化和经济的过快发展;1996-2002年,障碍因子则转变为地均粮食单产、地均经济产出等过低,而2003-2007年,则表现为环境污染排放等耕地的生态压力因素加大。