Production equilibria in vector lattices

The general purpose of this paper is to prove quasiequilibrium existence theorems for production economies with general consumption sets in an infinite dimensional commodity space, without assuming any monotonicity of preferences or free-disposal in production. The commodity space is a vector lattice commodity space whose topological dual is a sublattice of its order dual. We formulate two kinds of properness concepts for agents' preferences and production sets, which reduce to more classical ones when the commodity space is locally convex and the consumption sets coincide with the positive cone. Assuming properness allows for extension theorems of quasiequilibrium prices obtained for the economy restricted to some order ideal of the commodity space. As an application, the existence of quasiequilibrium in the whole economy is proved without any assumption of monotonicity of preferences or free-disposal in production. Received: March 9, 1999; revised version: September 4, 2000     

线性MMDS固态功率放大器

介绍了ＳＭ２５２７－４１Ｌ线性ＭＭＤＳ固态功率放大器，其性能类似于１００Ｗ的补偿型ＨＰＡ，而功耗更低、体积更小。     

Binomial basis for linear information dynamics: real options, dividends and the valuation of equity

Analytical research has confirmed that real options give rise to the kind of nonlinearities observed in practice between equity prices and the figures appearing on corporate financial statements. We develop these real option values in terms of a quasi 'supply-side' model of linear information dynamics based on simple discrete time binomial filtration processes. Our analysis shows that the linear models that pervade the empirical (and analytical) work of the area, will almost certainly suffer from an omitted variables problem. Parameter estimation will then be inconsistent and inefficient.     

平面无误差直线轨迹控制系统

本文提出了一种平面无误差直线轨迹控制系统设计方案，用两轴进给速度控制达到数学原理的轨迹实现方法，并通过伺服控制实现无误差直线轨迹输出。这是一种适合于数控设备等两轴进给运动状态下的控制装置实现无误差加工的理想方法，其控制过程简便，理论误差为零。     

关于日本对华直接投资贸易效应的实证分析

有关外商直接投资的贸易效应已经成为理论界讨论的热点问题,大量文献讨论了投资对贸易流量的影响.本文在前人研究的基础上,采用协整检验及误差修正模型检验,分析日本对华直接投资对于中日双边贸易所产生的效应.结果表明,日本对华直接投资与中国对日进、出口均表现为一种显著的协整关系;无论从长期还是短期看,日本对华直接投资与中国对日本的出口具有显著的双向格兰杰因果关系,但与中国对日本进口仅有单向的因果关系.     

江苏省对外直接投资的贸易规模效应分析

本文运用面板协整检验和Granger因果检验,对2008-2014年江苏省对外直接投资的贸易规模效应进行了实证研究。结果表明:江苏省对外直接投资具有正的进出口效应,但是效应不明显。江苏省对外直接投资与江苏省出口、进口之间存在着单向的因果反馈关系。根据检验结果,本文进一步讨论了这些结果的深层次原因以及提出了相应的政策建议。     

广东经济增长协整分析

本文通过对广东省1978～2007年的GDP、全社会固定资产投资和税收三个时间序列进行数量分析,发现它们之间存在协整关系,基于这个协整关系建立误差修正模型(ECM),在对模型进行分析后,对广东的经济发展提出一些建议。     

广东省经济增长研究

次贷危机爆发以来,广东省经济形势严峻,GDP增长受到严重影响。究竟出口、外商直接投资、人民币实际汇率在广东经济发展中起到什么作用呢?为了研究三者对广东省GDP的影响,本文以协整理论为基础,讨论了出口总额、外商直接投资、人民币实际汇率与GDP之间的关系。结果表明:①出口的增加能够带动GDP的增长;②外商直接投资与广东省GDP长期内存在正相关关系;③人民币实际汇率虽然与GDP没有直接的显著关系,但与出口总额长期负相关,与外商直接投资长期正相关。最后,针对以上结论进行进一步分析,并提出几点意见和建议。     

Do different time horizons in the volatility of the US stock market significantly affect the China ETF market?

This article investigates the linear, nonlinear and time-varying Granger causality between different time horizons in the volatility of US stock market and the China Exchange-Traded Fund (ETF) market. We find evidence of linear causality from the US stock market to the China ETF market, with a bilateral nonlinear causal relationship in the longer term. Bootstrap rolling causality analysis indicates high rejection rates of a noncausal relationship running from the US stock market to the China EFT market. The causality linkage from the China ETF market to the US stock market was determined to be time-horizon-dependent, and the null hypothesis rejection rate of non-Granger causality increased in the longer term.     

跨国公司R&D投资与我国经济增长

基于协整理论和Borensztein的模型,文章采用时间序列动态均衡关系分析方法,对跨国公司R&D投资与我国经济增长之间的关系作了实证分析。分析表明:跨国公司R&D投资对我国经济发展的影响时效相对较长,并且影响力度逐渐减弱。对考虑人力资本的跨国公司R&D投资与我国经济增长的关系的进一步的实证分析后,本文认为在目前跨国公司的R&D投资过程中,我国人力资本对经济增长的作用不显著,跨国公司R&D投资的引入对国内投资也不存在挤出效应。