论油田企业质量技术监督特点及发展趋势

从论述油田企业发展与质量技术监督的关系入手，阐述了石油工业质量技术监督工作的发展历史：分析了油田企业质量技术监督的特点，提出 了油田企业质量技术监督的趋势。认为：质量技术监督管理机构和技术检测机构的双重建设将得到进一步加强；建立施工作业质量监督与监理制度，实施勘探开发工程项目监理体制和运行体制，将成为油田企业积极探索并必须取得突破的一大课题。     

时序分析在地下洞室变形监测数据处理中的应用

时序分析法是广泛应用于多领域的统计分析方法,在岩土工程数值分析当中也有广泛应用,SAS/ETS(Ti me Series Forecasting)时序分析系统是一种智能化时序分析工具,本文运用SAS数据挖掘工具中时序分析组件对某水电站地下引水发电系统原位监控位移时间序列进行时序预测分析。实践表明,SAS/ETS时序分析方法基本能反映出蕴涵在位移序列中的岩体变形规律,预测结果与实测结果一致,可以运用于工程实践。     

全球国际直接投资发展的态势、动因与影响

文章从总体态势、地域分布、国家层次、投资方式、产业高度等方面分析了20世纪70年代以来国际直接投资发展的主要特征,并从制度、技术、政策等方面探讨了推动这种态势形成的基本动因,总结了世界FDI发展对全球国际生产、贸易、分工格局的主要影响.     

国外汽车使用的摩擦材料及其发展

根据摩擦材料的概念与功用,概述了国外汽车使用的摩擦材料的技术要求、发展变迁、材料分类和结构特点以及生产工艺,同时指出了国外车用摩擦材料工业的发展趋势.     

“十三五”时期世界经济走势与我国外部发展环境

“十三五”时期,我国经济总体上仍处于重要的发展战略机遇期,但世界政治经济格局将出现去全球化苗头,主要国家对我态度变化甚至转折,我国经济发展的外部环境趋于严峻。为此,必须实施商品出口与“走出去”并重的对外经济战略,推动我国对外经济从开放经济向国际经济的转变。     

Monotonicity of Rank Statistics in some Non–parametric: Testing Problems

For some non–parametric testing problems (one–sided two–sample problem, k –sample trend problem, testing independence against positive dependence) a partial ordering, denoted by ≥, over the alternatives is defined. This partial ordering expresses the strength of the deviation from the null–hypothesis. All familiar rank tests turn out to become more powerful under "increasing" alternatives; that is, all familiar rank statistics preserve the ordering stochastically in samples whenever it is present between underlying distributions. As a tool, the sample equivalence of ≥ is introduced as a partial ordering over pairs of permutations. Functions, defined on pairs of permutations, which preserve this ordering are studied.     

Pricing of the time-change risks

We develop an equilibrium endowment economy with Epstein-Zin recursive utility and a Lévy time-change subordinator, which represents a clock that connects business and calendar time. Our setup provides a tractable equilibrium framework for pricing non-Gaussian jump-like risks induced by the time-change, with closed-form solutions for asset prices. Persistence of the time-change shocks leads to predictability of consumption and dividends and time-variation in asset prices and risk premia in calendar time. In numerical calibrations, we show that the risk compensation for Lévy risks accounts for about one-third of the overall equity premium.     

The trend of enterprise business model development-business ecosystem

With the rapid development of economic globalization and network, dynamic uncertainty further intensifies in the operation of social economy. The competitive model is further developing to the complication direction. Simultaneously, enterprise＇s cooperation will also have more development. In this environment, enterprises will gradually evolve into competition of ecosystem. The future performance of the business model is also a form of competition. This article mainly discusses the business ecosystem connotation and the characteristics, explains the strategy types and strategy of the business ecosystem＇s survival and development, and finally puts forward the business ecosystem health and the maintenance measures.     

基于城市成长能力的长三角城市群空间发展态势分析

从城市成长能力的角度出发,通过建立城市成长能力指标体系,采用熵权法确定各评价指标权重,结合灰色关联分析方法构建城市成长能力的评价模型,计算出长三角16个城市综合成长能力指数,并以16个城市成长能力的聚类分析结果为依据,进一步探讨了长三角城市群空间发展状况.提出长三角城市群的反\"K\"型发展模式和网络型发展态势,以对长三角城市群空间结构的优化、布局和进一步发展提供依据和参考.