广发银行IPv6改造工作实践

广发银行采用NAT64和双栈改造相结合的方式开展IPv6改造工作,通过向CNNIC申请IPv6地址、IPv6互联网线路与运营商使用BGP动态路由协议对接的方案,实现所有面向公众服务的互联网应用系统支持IPv6连接访问,完成3个互联网应用系统的IPv4/IPv6双栈改造工作,按计划顺利完成2020年IPv6改造工作任务....     

改革开放以来上海的要素流动和边际生产率分析

本文从新古典经济学的柯布-道格拉斯生产函数出发,对上海的国民生产总值,资本存量与劳动力进行回归分析,以得到资本存量与劳动力这两个生产要素相对产出弹性,并由此得出资本存量与劳动力对于产出的边际回报率。许多实证研究都要涉及到对资本存量K的估计,但是现有研究中对K的估计方法存在较大的差异,从而也就影响了后续研究的准确性和可靠性,因此很有必要针对估计上海的资本存量K的现有研究进行一下探讨。本文从四个方面详细探讨了测算K时所可能存在的问题,并根据自己的方法重新估算了上海的资本存量K的数据。通过改进方法所估算的上海资本存量自改革开放以来已经翻了不止三番,年平均增长率为1 1 .1 5% ,资本积累极为迅速。上海资本形成的路径明显分为两个阶段,增量改革推动的配置效率改进使资本—产出比率自1 985年来持续下降,而近年来的资本形成过快是由于经济增长越来越倚重资本深化。本文认为,上海的经济增长在近年越来越表现出静态的特征,至今尚不具备充分的动态改进力量。     

宗教信仰与社会冲突:根源还是工具?

基于微观调查数据,本文考察了宗教信仰与社会冲突之间的关系。结果表明,相对于非信徒,信徒产生冤屈情绪、参与群体性事件的概率更高。宗教对冤屈情绪产生正向影响的原因可能是信徒因为其身份遭受了不平等待遇;宗教对群体性事件有正向影响的原因可能在于,宗教对冤屈情绪有正向影响同时宗教的组织性降低了群体性事件的参与成本。这些结果表明,宗教本身并不是社会冲突的根源,其在社会冲突过程中所扮演的角色更多的是"工具"。     

关于我国商业银行操作风险的若干对策思考

有关操作风险的防范,正日益引起各金融机构的重视,本文从操作风险的定义及其和信用风险、市场风险的特殊性区别出发,揭示出我国商业银行目前在操作风险防范方面存在的问题,认为必须更新理念、健全管理框架、强化管理手段,方能逐步达到新巴塞资本协议的要求。为此,作者提出了商业银行提高全员风险意识,确立风险报告制度,强化风险责任追究机制,加强风险教育,完善员工综合素质等对策措施。     

黄曲霉毒素前处理方法的研究——免疫亲和柱的重复利用

本文对高效液相色谱检测黄曲霉毒素的前处理方法进行优化,建立了免疫亲和柱的回收纯化处理方法。使用过的免疫亲和柱分别用甲醇/水、水冲洗,再用Pbs缓冲溶液进行填充,放入冰箱内于2-8℃保存。对回收柱进行试验,回收率、精密度均达到检测要求,且柱体可以重复使用两次。     

创建绿色食品优势市场的制度机制探讨

绿色食品是经权威机构认定使用绿色食品标志的安全、优质、营养食品,我国至今没有形成普遍崇尚和优先选择消费绿色食品的优势市场。文章提出了绿色食品优势市场的概念,并对我国绿色食品优势市场贫瘠的各种制约因素进行了分析,探讨了创建中国绿色食品优势市场有效形成的若干制度机制。     

校园电子商务网站的研究与实现

本系统基于校园电子商务的发展的现状,采用了J2EE技术和XML技术在校园网络上架设了一个动态的校园商品网上交易平台。文章分析了J2EE和XML各自的优点,并阐述了该网站的具体实现和原理。实践证明系统具有良好性能。     

On manufacturers complementing the traditional retail channel with a direct online channel

With the explosion of the Internet and the reach that it affords, many manufacturers have complemented their existing retail channels with an online channel, which allows them to sell directly to their consumers. Interestingly, there is a significant variation within product categories in manufacturer's use of the Internet as a direct distribution channel. The main objective of this study is to examine the strategic forces that may influence the manufacturer's decision to complement the retail channel with a direct online channel. In particular, we are interested in answering the following questions:

1. Why is it that in some markets only a few firms find it optimal to complement their retail channels with a direct Internet channel while other firms do not?
2. What strategic role (if any), does the direct Internet channel serve and how do market characteristics impact this role?

To address these issues we develop a model with a single strategic manufacturer serving a market through a single strategic retailer. In addition to the focal manufacturer's product the retailer carries products of competing manufacturers. Consumers in this market are one of two types. They are either brand loyal or store loyal. The retailer sets the retail price and the level of retail support, which impact the demand for the manufacturer's product. The retailer's decisions in turn depend on the wholesale price as well as the Internet price of the product if the manufacturer decides to complement the retail channel with an online channel. Our analysis reveals that the optimality of complementing the retail channel with an online channel and the role served by the latter depends critically upon the level of support that the retailer allocates to the manufacturer's product in the absence of the online channel. The level of support allocated by the retailer, in the absence of the online channel, depends upon the retail margins on the manufacturer's product relative to that on rival products in the product category. When the size of the brand loyal segment is small relative to the size of the store loyal segment then in the absence of the online channel, the manufacturer can lower wholesale price and enhance retail support, especially when the retail margins on the rival products are low. In contrast, when the size of the loyal segment is large and the retail margins on rival products are high the manufacturer will find it more profitable to charge a high wholesale price even if that induces the retailer to extend low levels of support. If the manufacturer decides to complement the retail channel with an online channel, some consumers who would have purchased from the retailer might prefer to purchase online. Our analysis reveals that when consumers' sensitivity to price differences across the competing channels exceeds a certain threshold it is not optimal for the manufacturer to complement the retail channel with an online channel. However, this price sensitivity threshold itself depends upon product/market characteristics, suggesting that manufacturers seeking to complement their retail channels with an online channel should look beyond the nature of threat the online channel poses to the retail channel in devising their optimal distribution strategies. When the retail margins on rival products are sufficiently small, complementing the retail channel with an online channel when optimal allows the manufacturer to price discriminate and enhance profits. In contrast when retail margins on rival products are sufficiently high, complementing the retail channel with an online channel serves to enhance retail support. We also identify market conditions under which profits of both the manufacturer and the retailer are greater with the online channel than that without it. This is particularly interesting since the online channel competes with the retail channel.     

Technological convergence,competitiveness, and welfare: A study of international manufacturing industries

In this study, a monopolistic competition model is used to investigate the effects of international technological convergence on factor rewards, output composition, and welfare. Four testable hypotheses on the impact of technological convergence on follower's and leader's competitiveness and welfare are presented. We then use 1993–2001 data from 128 manufacturing industries in 35 countries to test these hypotheses. Results show that followers' relative wages and global value-added shares increase with technological convergence. Followers benefit from convergence's positive income effect. Leader's own technological progress is the key to its welfare improvement, while terms-of-trade effects appear less important.     

Pricing VIX derivatives with infinite-activity jumps

In this paper, we investigate a two-factor VIX model with infinite-activity jumps, which is a more realistic way to reduce errors in pricing VIX derivatives, compared with Mencía and Sentana (2013), J Financ Econ, 108, 367–391. Our two-factor model features central tendency, stochastic volatility and infinite-activity pure jump Lévy processes which include the variance gamma (VG) and the normal inverse Gaussian (NIG) processes as special cases. We find empirical evidence that the model with infinite-activity jumps is superior to the models with finite-activity jumps, particularly in pricing VIX options. As a result, infinite-activity jumps should not be ignored in pricing VIX derivatives.