FDI影响我国二元经济结构的实证分析

自上世纪90年代以来,我国利用外商直接投资取得了巨大成就,但随着外商直接投资规模的持续扩大,外资投向的严重不平衡也成为加剧我国经济结构失衡的重要原因之一。本文运用简单对比和计量经济分析方法对利用外商直接投资强化二元部门经济特征进行了实证分析,得出的结论与实际情况非常吻合。     

基于刘易斯二元经济模型的提高中国农民收入问题的分析

大多数经济学家认为,发展中国家的经济结构具有二元的性质,即现代城市部门与传统的乡村农业部门并存,并据此形成了二元经济结构发展模型,以解释经济发展过程中的城乡工农关系以及二元经济向一元经济的转换。最早提出二元经济模型的是刘易斯,自从刘易斯的经典二元经济模型提出后,二元经济结构模型被广泛运用了,经济文献中又出现了对模型的很多种分析发展。本文从刘易斯二元经济模型着手,进行了深入的探讨。     

基于刘易斯二元经济模型的提高中国农民收入问题的分析

大多数经济学家认为,发展中国家的经济结构具有二元的性质,即现代城市部门与传统的乡村农业部门并存,并据此形成了二元经济结构发展模型,以解释经济发展过程中的城乡工农关系以及二元经济向一元经济的转换.最早提出二元经济模型的是刘易斯,自从刘易斯的经典二元经济模型提出后,二元经济结构模型被广泛运用了,经济文献中又出现了对模型的很多种分析发展.本文从刘易斯二元经济模型着手,进行了深入的探讨.     

基于SWOT分析我国二孩配套政策可行性

目前,我国人口发展面临处于低生育率水平、人口老龄化加速等诸多挑战,学术界及社会对如何有效的结合我国国情完善生育政策配套措施,进而充分发挥生育政策效应等问题进行了诸多的讨论。文章通过SWOT分析法,对全面二孩政策配套体系问题实施的优势、劣势、机会及挑战进行分析,并根据分析结果提出了相关的建议。     

我国企业对外直接投资方式的二元选择模型分析

本文利用计量模型分析我国对外直接投资方式选择问题的研究思路,选取企业技术水平、企业规模、市场竞争程度、东道国投资环境四个因素作为对外直接投资方式选择的影响因素,并利用二元选择模型分析所选因素对我国对外直接投资方式选择的影响.     

醇酯-12——绿色涂料对助成膜剂的选择

本文对助成膜剂的性能和市场情况进行了系统的分析比较,认为高效、安全、优质的2,2,4-三甲基-1,3-戊二醇单异丁酸酯符合HJBZ004-94的基本条件,是绿色涂料的理想助剂。     

PBET共聚酯的研究开发

本文介绍了PBET共聚酯的研制开发情况及其制备工艺、性能和用途。     

1,4-丁二醇与γ-丁内酯技术及市场综述

本文综述了顺酐加氢衍生物1，4-丁二醇与γ-丁内酯的市场情况、生产工艺技术与最新的研究开发动态。     

Buyer-seller relationships in international trade: Evidence from U.S. States' exports and business-class travel

International trade has become increasingly dependent on the transmission of complex information, often realized via face-to-face communication. This paper provides novel evidence for the importance of in-person business meetings in international trade. Interactions among trade partners entail a fixed cost of trade, but at the same time they generate relationship capital, which adds bilateral specific value to the traded products. Differences in the face-to-face communication intensity of traded goods, bilateral travel costs and foreign market size determine the optimal amount of interaction between trade partners. Using U.S. state level data on international business-class air travel as a measure of in-person business meetings, I find robust evidence that the demand for business-class air travel is directly related to volume and composition of exports in differentiated products. I also find that trade flows in R&D intensive manufactures and goods facing contractual frictions are most dependent on face-to-face meetings. The econometric identification exploits the cross-state variation in bilateral exports and business-class air travelers by foreign country and time period, circumventing any spurious correlation induced by cross-country differences driving aggregate travel and trade patterns.     

Order flows and the exchange rate disconnect puzzle

The aim of this paper is to establish the link between the high frequency dynamics of spot exchange rates and developments in the macroeconomy. To do so, I first present a theoretical model of exchange-rate determination that bridges the gap between existing microstructure and traditional models. The model examines how dispersed microeconomic information known to individual agents outside the foreign exchange market is aggregated and transmitted to dealers via transaction flows (i.e., order flow); and how the information is then embedded in the spot exchange rate. I then report empirical evidence that strongly supports the presence of the link between the macroeconomy, order flow, and high frequency exchange rate returns implied by the model. In fact, my empirical results indicate that between 20 and 30% of the variance in excess currency returns over one- and two-month horizons can be linked back to developments in the macroeconomy. This level of explanatory power is an order of magnitude higher than that found in traditional models — even the newly developed monetary models incorporating central banks reaction functions. Moreover, it provides a straightforward solution to the exchange-rate disconnect puzzle. Namely, the high frequency behavior of spot exchange rates reflects the flow of new information reaching dealers concerning the slowly evolving state of the macroeconomy, rather than the effects of shocks that drive rapidly changing macroeconomic conditions.     

1,3-丙二醇的工业应用和生产

综述了1,3-丙二醇市场状况及在工业上的应用,说明了1,3-丙二醇在工业上的生产方法——化学合成法和生物转化法,并加以评论比较,对今后国内外生产的发展前景做了展望。     

生物法制备1，3-丙二醇的研究进展

1,3-丙二醇是一种重要的化工原料,在过去的几年里,由于其商品化需求日益增加,因此成为了许多研究的热点。1,3-丙二醇的生产方法有化学法和微生物发酵法两种,而生物法与化学法相比,具有条件温和、操作简便、副产物少、无环境污染等优点,已成为各国研究的新焦点。对国内外1,3-丙二醇生物法生产的研究成果进行了综述,包括其发酵工艺及生产的现状,探讨了1,3-丙二醇生物法生产的发展前景。     

中国外贸进出口对税收的影响：理论与实证

对外贸易对中国的税收有怎样的影响?回答这一问题，对制定贸易政策有重要的现实意义。本文对1-2-3模型进行修正，将总产出区分为4种具有不同税收特征的产品，构建相应的税收模型，从理论上分析了对外贸易对税收有正面的影响。实际测算显示，一般贸易出口每增加1元人民币，会相应带动当年税收增加0．4～0．5元人民币。通过对季度数据的Granger因果检验和向量误差修正模型分析，本文发现出口增加对税收有持续的正面影响。     

A theory of the competitive saving motive

Motivated by recent empirical work, this paper formalizes a theory of competitive savings — an arms race in household savings for mating competition that is made more fierce by an increase in the male-to-female ratio in the pre-marital cohort. Relative to the empirical work, the theory can clarify a number of important questions: What determines the strength of the savings response by males (or households with a son)? Can women (or households with a daughter) dis-save? What are the conditions under which aggregate savings would go up in response to a higher sex ratio? This theory can potentially help to understand the savings patterns in China, India, Vietnam, Singapore, Hong Kong, and other economies that have experienced a dramatic increase in the pre-marital sex ratio.     

聚丁烯-1研究进展及应用

等规立构聚丁烯-1是具有多晶变体的聚合物,具有突出的耐热抗蠕变性、优异的韧性、耐环境应力开裂性、耐磨性、耐燃性和优良的可加工性、环保性等,特别适合于制备管材。主要介绍了国内外聚丁烯-1研究进展,探讨了Z-N催化体系、制备条件对丁烯-1聚合性能的影响和茂金属催化剂制备聚丁烯-1的相关研究,以及着重概述了聚丁烯-1管材的应用,结合我国现状简要说明了聚丁烯-1树脂在我国具有的开发潜力。