外贴FRP结构剥离分析概述

粘结层性能是影响外贴FRP结构加固效果的重要因素。本文介绍了外贴FRP结构粘结剪应力分析的主要理论和所取得成果。重点对粘结剪应力分析发展现状进行了综述,并对外贴FRP加固结构及剪应力研究发展趋势进行了展望。     

撞楔-锚索梁联合支护在深部穿层巷道中的应用

针对千米深井穿层巷道托顶煤施工中存在的顶板易冒落且危及施工安全的问题,提出了以撞楔法+锚索梁联合支护技术。结合巨野矿区某千米深井巷道现场具体地质及施工条件,阐述了其施工工艺,比选确定了合理的支护参数,进行了现场应用,并对其作用机理进行了分析。研究表明,撞楔+锚索梁联合施工技术是巷道掘进托顶煤施工中一种受力合理、安全经济且施工简便的支护结构形式,具有广泛的推广价值。     

浅析小学语文阅读教学中的多元有界性

新课改实施以来,多元化解读的阅读教学开始盛行于课堂。阅读教学中应该注重多元解读。但是,在近期的阅读教学过程中却出现误读和过度拓展等一些误区。本文针对当前多元解读的泛滥现象,试图寻求阅读教学中多元解读的界限和走出误区的策略。     

一类带有Dirichlet边界值条件的椭圆型方程正解的存在性

利用欧拉变分原理,证明了一类带有Dirichlet边界值条件的椭圆型方程正解的存在性。     

南通现代化的历程、特点与目标实现

南通的社会经济发展正处在全面小康向基本现代化迈进的历史转折点上。通过对南通基本现代化四个历史阶段的解读、三次“南通现象”的透视，就如何把握基本现代化的总体要求、发展特征和历史进程，探索有时代特点、南通特色的现代化之路，以及对南通现代化目标实现途径进行了探讨。     

浅谈中间件及其在电信服务中的应用

当前大型数据库应用系统的开发中较多采用中间件构成三层应用体系结构。在叙述中间件的基本概念和分布式多层体系结构的优点的基础上，介绍中间件在电信服务中使用的背景和使用的情况。     

An overview of cricket ball swing

The aerodynamic properties of a cricket ball have intrigued cricket players and spectators for years, arguably since the advent of the game itself. The main interest is in the fact that the ball can follow a curved flight path that may not always be under the control of the bowler. The basic aerodynamic principles responsible for the nonlinear flight or ‘swing’ of a cricket ball were identified decades ago and many papers have been published on the subject. Over the last 25 years or so, several empirical investigations have also been conducted on cricket ball swing, which revealed the amount of attainable swing and identified the parameters that affect it. Those findings are reviewed here with emphasis on phenomena such as late swing and the effects of humidity on swing. The relatively new concept of ‘reverse swing’, how it can be achieved in practice, and the role in it of ‘ball tampering’, are also discussed in detail. In particular, the ability of some bowlers to effectively swing an old ball in the conventional, reverse and the newly termed ‘contrast’ swing mode is addressed. A discussion of the ‘white” cricket ball used in the 1999 and 2003 World Cup tournaments, which supposedly possesses different swing properties compared to a conventional red ball, is also included. This is a current overview of cricket ball swing rather than a detailed review of all research work performed on the topic. The emphasis is on presenting scientific explanations for the various aerodynamic phenomena that affect cricket ball swing on a cricket ground.     

产业边界决策与企业战略性风险分析

从交易经济性、资源优势和不确定性角度分析了企业纵向边界决策风险,从业务间关联、共享和协同的角度分析了企业横向边界决策风险,探讨了在不同决策取向下企业在边界内外经营平衡的比较及其形成的战略性风险。     

产学合作网络中企业关系势能与自主创新绩效——基于地理边界拓展的调节作用

本文采用中国有机化学行业的产学合作专利数据,进行专利地图分析,并以参与产学合作的企业的自主创新绩效为因变量,构建非平衡面板数据下的负二项回归模型,研究产学合作网络中,企业的关系势能对企业自主创新绩效的影响,并考察合作网络的地理边界拓展对二者关系的调节作用。分析结果发现我国有机化学行业的产学合作近几年增速放缓,且已呈现出地理边界拓展的形态,回归结果支持了部分假设:企业的直接关系规模和间接关系强度与企业自主创新绩效正相关,合作网络的地理边界拓展正向调节间接关系规模、间接关系强度与企业自主创新绩效的关系。