On the Differential Effects of European Patents

Since the invention of the European Patent System, national patent systems have continued to co-exist, although they did lose appeal. How have the different national systems been affected in view of their characteristics? In order to answer this question a constant-market-share (CMS) analysis is carried out. While on a theoretical level, the different elements adding to the appeal of each patent system are discussed, the CMS-analysis reveals the importance of country size in that the national systems of smaller countries lose.     

CZ法单晶等径生长模糊控制系统设计

针对单晶等径生长过程中主要是对系统的温度和晶体测径环节的控制,介绍了一种基于模糊控制与PID算法的CZ法单晶等径生长控制系统。详细阐述系统的组成,重点介绍系统采用双闭环串级控制。最后通过仿真测试,结果表明,该系统具有对现场温度、单晶直径等参数的合理控制和调节功能,能够有效地改善系统控制性能。     

中国水产品对日本出口变动因素分析

论文利用日本财务省贸易统计提供的1990～2009年日本水产品贸易数据,在总结中国水产品对日本出口贸易特点的基础上,利用恒定市场模型,分析了中国对日本水产品出口贸易的变动情况。研究结果表明,需求效应和竞争力效应是影响中国水产品对日出口额变动的主要因素,近年来中国水产品对日本出口额急剧缩减主要是由于日本水产品进口市场需求萎缩和中国水产品竞争力下降造成的。在此基础上,根据实证分析结果,论文提出了扩大中国水产品对日本出口的建议。     

谈手动涂胶泵系统在低成本、高价值企业中的应用

文章通过对手动涂胶泵系统与传统的支装胶手动涂胶系统进行对比,阐述了在车身制造过程中手动涂胶泵系统的运用给企业所带来的经济效益。     

Memoryless Reigns of the “Sons of Heaven”

Human lifetimes have increasing failure rates; as people age (beyond early childhood) they are more likely to die. Viewing the succession of Chinese Emperors as a statistical ensemble we show that, unlike lifetimes, their reigns ceased at a constant rate for over two millennia, unaffected by elapsed time. In fact reign lengths of the “Sons of Heaven”, as the Chinese Emperors were known, followed a memoryless exponential distribution with a 10-year half-life. Becoming emperor not only influenced the duration of remaining life, but length of rule was independent of age at ascent. We propose an explanation for the observed exponentiality using asymptotic results from the theory of stationary stochastic processes.     

The Ruin Probability of a Discrete Time Risk Model under Constant Interest Rate with Heavy Tails

This paper investigates the ultimate ruin probability of a discrete time risk model with a positive constant interest rate. Under the assumption that the gross loss of the company within one year is subexponentially distributed, a simple asymptotic relation for the ruin probability is derived and compared to existing results.     

我国煤电价格联动机制实施困境分析及其前景构想——美国电力自动调节条款的经验与启示

我国煤电价格联动机制的推出与实施过程遭遇了很多障碍与反复。文章借鉴美国电力行业的自动调节条款的实施背景、本质、条件、作用机理和保障,分析了当前我国煤电联动过程中遇到的困境,找出了缺乏规制起点、承载多重目标、条款模糊等症结所在,并描绘了对该机制的前景构想。     

论解放思想无止境

本文阐述了解放思想是马克思主义的基本原则,是马列主义、毛泽东思想、邓小平理论的精髓问题,指出了解放思想的原则性、重要性、必要性和紧迫性,提出了继续解放思想的基本要求.     

Measuring the Volatility of Wheat Futures Prices on the LIFFE

Agricultural prices rose dramatically in 2007 and have subsequently fluctuated at high levels. This paper estimates the volatility of daily wheat futures prices on the Euronext/London International Financial Futures and Options Exchange for 1996–2012 using an exponential generalised autoregressive conditional heteroscedasticity model with a constant (price) elasticity of variance (CEV) and a broken trend. Results show that volatility is highly persistent; there is a structural break in volatility in June 2007 when volatility rose by 10%; subsequently, the wheat futures price has become more volatile; and the CEV is 0.04.     

基于恒定市场份额模型的中国林产品出口分析

针对1992~2004年中国林产品出口规模的变动特征,采用恒定市场份额模型,对影响中国林产品出口规模变动的因素进行了分析。结果表明:中国林产品的出口明显受其产品竞争力的影响,提高林产品的竞争力对促进林产品出口具有非常积极的作用,世界林产品贸易规模的扩大和商品出口构成的优化对中国林产品的出口产生了正面影响,而市场分布效应则是负的。同时,提出通过提高林产品的竞争力、增加中国人造板的出口以及积极开拓新市场来促进中国林产品的出口等建议。