左宗棠开发西北的思想和实践

晚清重臣左宗棠在经略西北期间，提出了一系列开发、建设西北的思想。他在因地制宜兴修水利，植树造林，农牧并举，发展少数民族地区经济和文化教育，推广近代工业和商业贸易等方面进行了积极实践。他的许多宝贵经验对我们今天的西部大开发仍具有启示作用。     

多道系统中进程同步检测的讨论

多道程序设计中，进程之间出现同步问题可通过信号灯的不同设置来解决，即用P信号灯和V信号灯的对应关系来检测其正确与否。     

工程力学教学与学生能力的培养

根据工程力学课程的特点，从力学的基本概念、教学方法和教学模式上对工程力学的教学体系进行了分析，以充分调动学生的学习积极性，进一步提高学生的逻辑思维能力和综合解决问题能力，增强学生的创新意识和创新能力。     

煤矿安全生产与经济发展

现代安全经济学对安全的重要性有一个很好比喻，即“三角形理论”：经济为两条边，安全是一条底边，没有底边的支撑，形成不了这个三角形。经济发展再快，没有安全就构不成稳定的三角形。可见，安全不仅是人类生存的需要，而且是经济发展的前提。一是安全生产保护生产力。生产力3大要素中，人是最具决定性的因素。人类自有生产活动，便存在事故隐患。安全生产的本质是不断消除隐患、遏制事故，保护劳动者的生命安全健康，所以，安全生产始终是保护生产力的一项不可缺少的工作。二是安全生产发展生产力。生产是一种复杂的物质转换活动，活动过程中会遇到各类事故隐患。安全生产通过排治隐患遏制事故，用尽量少的劳动消耗和物质消耗，生产出更多符合社会需要的产品，来促进生产力的发展。     

An empirical analysis of the relationship between the hedge ratio and hedging horizon: A simultaneous estimation of the short‐ and long‐run hedge ratios

This article analyzes the effects of the length of hedging horizon on the optimal hedge ratio and hedging effectiveness using 9 different hedging horizons and 25 different commodities. We discuss the concept of short‐ and long‐run hedge ratios and propose a technique to simultaneously estimate them. The empirical results indicate that the short‐run hedge ratios are significantly less than 1 and increase with the length of hedging horizon. We also find that hedging effectiveness increases with the length of hedging horizon. However, the long‐run hedge ratio is found to be close to the naïve hedge ratio of unity. This implies that, if the hedging horizon is long, then the naïve hedge ratio is close to the optimum hedge ratio. © 2004 Wiley Periodicals, Inc. Jrl Fut Mark 24:359–386, 2004     

QUADRATIC TERM STRUCTURE MODELS FOR RISK-FREE AND DEFAULTABLE RATES

In this paper, quadratic term structure models (QTSMs) are analyzed and characterized in a general Markovian setting. The primary motivation for this work is to find a useful extension of the traditional QTSM, which is based on an Ornstein–Uhlenbeck (OU) state process, while maintaining the analytical tractability of the model. To accomplish this, the class of quadratic processes, consisting of those Markov state processes that yield QTSM, is introduced. The main result states that OU processes are the only conservative quadratic processes. In general, however, a quadratic potential can be added to allow QTSMs to model default risk. It is further shown that the exponent functions that are inherent in the definition of the quadratic property can be determined by a system of Riccati equations with a unique admissible parameter set. The implications of these results for modeling the term structure of risk-free and defaultable rates are discussed.     

Effectiveness and Effects of China’s Capital Controls

I. IntroductionNations at every stage of development and in every region of the world are more closelylinked through trade in goods and services, through flows of funds and investments ineach others’ economies than ever before. But in sharp contrast to more and more nationsloosening restrictions on international trade, controls over capital flows are still substantialnearly everywhere except in the most developed economies. This is certainly the case inChina, where restrictions on movements …