Oil price and Gulf Corporation Council stock indices: New evidence from time-varying copula models

Using a time-varying GJR copula approach, we determine the conditional dependence of the GCC stock indices on oil price between 2007 and 2016. We show how to improve the forecasting accuracy of the co-movement of energy and stock prices in an equally weighted portfolio. Contrary to prior findings, we demonstrate that due to the different co-movements across the GCC stock indices, portfolios of oil assets and several GCC stocks are less likely to be affected by systemic risk. The different co-movements across several stock indices over time provide different entry and exit points for stock investors. This approach is in line with the ‘buy low/sell high’ adage.     

IPv4与IPv6的比较

随着网络技术飞速发展,许多以IP为核心的网络新技术纷纷出现,IPv6就是其中一项很重要的技术,本文主要通过与目前IPv4存在问题的比较分析,从包头结构、地址格式及地址分类等方面来介绍IPv6的有关知识.     

6S管理在某胶粉制造厂的应用

企业生产现场的环境对产品质量、员工心情、生产效率、生产成本等都有着重要的影响,而6S管理是现代企业行之有效的现场管理方法。本文通过对某胶粉制造厂生产现状分析,得出实施6S是该企业的需要。并针对该企业的特点,设计了6S管理实施方案,通过该方案的实施,企业的生产现场得到了改善。     

An axiomatic approach to \boldsymbol{\varepsilon}-contamination

Summary.  Suppose that an economic agent is 100% certain that uncertainty she faces is characterized by a particular probability measure, but that she has a fear that, with 100% chance, her conviction is completely wrong and she is left perfectly ignorant about the true measure in the present as well as in the future. This situation is often called -contamination of confidence. The purpose of this paper is to provide a simple set of behavioral axioms under which the decision-makers preference is represented by the Choquet expected utility with the -contamination of confidence.Received: 25 November 2002, Revised: 15 November 2004, JEL Classification Numbers:   D81. Correspondence to: Hiroyuki OzakiWe are grateful to an anonymous referee. The referees comments greatly improved the exposition of the paper. The work reported here is partially supported by a grant from the Economic and Social Research Insitute, the Cabinet Office, the Government of Japan.     

MSP430F149单片机在电子血压计中的应用

时下,电子血压计与传统血压计相比有诸多优势,但因其准确性、重复性不太理想,使用受到很大局限。通过选用高性能硅压式传感器MPXV53GC6U,设计温度补偿电路,优化血压测量的控制计算方法,提高了系统的准确性、稳定性。选用功耗小体积小的器件,紧凑的系统构架,人性化的软件设计,使血压计轻巧便携、使用方便。并对该系统设计做了详细介绍。     

基于6sigma的采购质量改进研究

将6sigma的管理方法引入采购质量管理中,运用6sigma定义的DMAIC五个步骤对采购过程的质量进行定义、评估、分析、改进和控制,从而达到提高采购过程质量水平的目的。     

用6S管理注入仓储管理系统内涵推升仓储运营水准

6S管理已经成为企业管理的一项重要内容。文章针对仓储系统的6S管理的推广步骤、内容方向和推行6S管理要注意的问题,阐明6S管理在仓储系统中的应用,导出6S管理是市场竞争方向,是推升仓储管理营运水准的丰富内涵。     

两种标准条件下锦纶6帘线拉伸性能试验探讨

文章论述了分别采用GB/T9102-1988和GB/T9102-2003两种标准,对锦纶6浸胶帘线拉伸性能进行对比试验,并通过对对比试验结果的分析,推断出两组试验结果间的关系,从而为帘子布的生产、质量控制、检验和验收提供参考。     

6S优化检维修管理模式的实施

为提高设备检维修现场管理水平,中国石化南通石油分公司大岸桥石油机械厂钳工车间将6S现场管理理念导入钳工车间日常检维修管理中,通过对检维修现状和方式的分析,创新管理理念,制定有效的计划及措施并落到实处,使钳工现场检维修管理模式得到优化,提升了车间的管理水平。     

Critical resource: An institutional economics of the Internet addressing-routing space

This paper links the analysis of IP address policy to the established vocabulary and concepts of institutional economics. Internet addressing and routing are usually discussed in technical terms, yet embedded in this highly technical discourse are a number of critical economic concepts, such as scarcity, externalities, common pool resources, tragedy of the commons, and conflict over the distribution of costs. To solve these problems, governance institutions native to the Internet have evolved. Yet despite the centrality of addressing and routing to Internet governance, there is very little research literature that bridges economic, institutional and technical discussions of IP addressing and routing. This paper connects the techno-economic discussion to analysis of institutions and governance arrangements.