中国-东盟贸易自由化博弈分析

在经济全球化和区域经济一体化的背景下,中国-东盟自由贸易区的全面启动将对世界经济格局产生深远的影响.但在实施自由化贸易的过程中,当事双方的共同利益和本位利益既有协同也有冲突.因此,尝试从博弈论的角度来分析中国-东盟贸易自由化的利益机制和推动贸易自由化的条件.通过对双方的利益博弈分析,指出贸易双方应该逐步看淡本位利益,为推动贸易自由化进程而应更多地考虑共同利益和长远利益;其次,双方在制定贸易政策和进行谈判时,虽然不能忽略本位利益,但只有通过满足他方的利益才能使本位利益得到实现;因此,满足贸易双方“利己”和“利他”的唯一均衡解就是同步实施关税减让.在整个博弈过程中,中国作为一个负责任的大国,可以通过首先放弃部分局部利益来换取东盟各国的信任,从而确立中国在贸易战略中的市场领导者地位.这正是确保区域贸易自由化实现的基本要件.     

贸易发展对旅游的溢出效应研究——基于中国—东盟的实证检验

贸易和旅游作为贸易畅通和民心相通的重要内容,在促进经济合作和文化传播等方面发挥着重要作用,然而贸易对旅游溢出效应的探讨尚不充分.本文基于1995-2017年中国—东盟贸易和旅游面板数据,运用拓展引力和门槛效应等模型,探讨贸易发展对旅游的溢出效应.实证结果:1)贸易发展对旅游存在显著溢出效应,且出口对入境溢出...     

中国对外直接投资的贸易效应研究:基于对北美自贸区、欧盟、东盟投资的比较分析

中国对外贸易发展成熟、国际地位显著,但从长期看,其边际收益呈现递减趋势.而对外直接投资虽规模较小,且尚在起步阶段,但其发展速度快、市场潜力巨大.在拓展Anderson和Wincoop模型基础上,理论分析了对外直接投资与贸易之间的关系.然后通过建立计量模型,利用1995-2011年面板数据进行固定模型分析.由于中国对外直接投资的贸易效应存在明显的区域性,以北美自贸区、欧盟和东盟作为研究对象,实证检验了中国对外直接投资与贸易的关系,旨在考察中国对三种不同类型区域一体化组织投资的贸易效应差异.研究结果表明,从长期看,中国对北美自由贸易区、欧盟和东盟投资均具有明显的贸易创造效应.这种贸易创造效应的大小依次是东盟欧盟北美自贸区.     

基于居民感知的博览会社会影响研究:以中国-亚欧博览会为例

展会对举办地的重大社会影响,已引起人们极大的关注.而作为与展会相关的重要利益相关者之一,举办地居民的感知和态度对于展会发展具有重要的意义.从居民感知的角度出发,以首届中国-亚欧博览会为例,在建立居民社会影响感知指标的基础上,通过聚类方法把社区居民分为三类,结合人口统计学数据分析乌鲁木齐市居民不同的感知特征,最后运用回归分析法探讨了不同维度因子感知与居民总体感知的关系,研究不同居民的利益诉求.     

中国-东盟自由贸易区效应对广西和云南企业迁移作用的比较研究

对中国-东盟自由贸易区效应对广西和云南企业迁移作用进行比较研究具有重要的理论和实践意义。通过界定中国-东盟自由贸易区效应对企业迁移作用机理的研究假设,构建相应的理论模型,并以中国-东盟自由贸易区效应为潜在自变量,区域产业环境、区域产业技术、区域产业绩效为潜在的中介变量,以企业迁移为潜在的因变量,对广西和云南相关的企业作为调查对象进行问卷调查,运用结构方程模型来分析中国-东盟自由贸易区效应对广西和云南企业迁移的作用路径的差异。研究结果表明,中国-东盟自由贸易区效应对广西和云南企业迁移的作用路径相似,但对广西企业迁移的影响是通过直接和间接两方面同时进行的,而对云南企业迁移的影响则只存在间接方面,且对广西企业迁移的总体效果要高于对云南企业迁移的总体效果。     

珠串成线:单元复习课的教学取向——以“线段和角”的复习课为例

最近一次七年级期末复习研讨活动中,笔者开设了一节“线段和角”的复习课,得到参与研讨的同行的好评.下面呈现该课的前后两次设计,并给出各个教学活动的设计意图,提供研讨.一、“线段和角”的两种教学设计第一种教学设计如下所示.活动1:一颗“种子”.如图1:A l图1请你用几何语言描述这幅图.设计意图:复习点与直线的位置关系,为下面的问题作准备.活动2:种子在“孕育”.(1)如图2,在直线l上再取一点B,图中有几条线段?     

一轮复习课:起点和终点都是概念——以“相似三角形的判定与性质”复习为例

不同阶段的中考复习,在教学任务上有着较大的差异.与二轮专题复习的综合性相对应,一轮复习应凸显基础性,一般以知识点的梳理为教学任务.因此,在一轮复习课上,我们应以概念回顾为主要教学目标,通过适量的解题训练帮助学生梳理初中阶段所学的知识,形成较为完整的知识网络.近期,笔者以“相似三角形的判定与性质”为题开设了一节“起点和终点都是概念”首轮复习课,取得了较好的教学效果.现将这节课和笔者的些     

ENVIRONMENTAL POLICY AND TRADE LIBERALIZATION: THE CASE OF TRANSBOUNDARY POLLUTION FROM CONSUMPTION

Abstract This paper develops a reciprocal market model of international duopoly with transboundary pollution from consumption to examine the effects of bilateral tariff reductions on the equilibrium pollution tax and welfare. I show that tariff reductions induce each country to raise an emission tax and that trade liberalization is welfare improving if the parameter of pollution damages is sufficiently large. These results are in contrast to the case of production‐generated pollution, and I seek the reason for this contrast.     

THE FREQUENCY OF SELECTION AND RELATIVE EFFECTIVENESS OF DIFFERENT MENTAL CALCULATION METHODS: SOME EVIDENCE FROM THE 1987 APU SURVEYS

Some results of a reanalysis of the 1987 Assessment of Performance Unit (APU) survey data on methods used by 11-year-olds to obtain answers to mental arithmetic questions are described in this paper. The methods used by the children would almost certainly have been untaught at that time. The categories used in this analysis have been derived from the work of Beishuizen in the Netherlands and in England. The two main mental methods noted are splitting numbers into separate column values and operating on one of the unsplit or complete numbers in the required calculation. A substantial proportion of 11-year-olds who used complete number methods matched the overall performance of 15-year-olds who answered the same questions in the 1987 APU survey of that age group.     

POLITICS,ENVIRONMENT, AND FISHERIES: EMPIRICAL EVIDENCE FROM PACIFIC SALMON FISHERIES

Pacific salmon have always been a lucrative commodity in Alaska history. The primary contribution of this paper is to assess the effects of statewide policy changes such as the 1959 Alaska Statehood and the 1974 Limited Entry Act on the harvest of Pacific salmon in Alaska, controlling for changes in oceanic environmental conditions such as the Pacific Decadal Oscillation. An autoregressive distributed lag approach is employed to annual time‐series data for 1899–1996. We find that, while the 1974 Limited Entry Act has a significant effect on Alaska salmon harvests, the 1959 Alaska Statehood had little impact. In addition, the oceanic environment has an important determinant of long‐run Alaska salmon harvests.     

CREATION OF MARINE RESERVES AND INCENTIVES FOR BIODIVERSITY CONSERVATION

Abstract Despite a number of benefits, marine reserves provide neither incentives for fishermen to protect biodiversity nor compensation for financial loss due to the designation of the reserves. To obtain fishermen's support for marine reserves, some politicians have suggested that managers of new marine reserves should consider subsidizing or compensating those fishermen affected by the new operations. The objective of this paper is to apply principal–agent theory, which is still infrequently applied to fisheries, to define the optimal reserve area, fishing effort, and transfer payments in the context of symmetric and asymmetric information between managers and fishermen. The expected optimal reserve size under asymmetric information is smaller than that under symmetric information. Fishing efforts encouraged with a transfer payment are always less compared to those without payment. This reflects the fact that as the manager induces the fishermen to participate in the conservation program, the fishermen will take into account their effects on fish stock by decreasing their effort. Examples are also supplied to demonstrate these concepts.     

多元位置的稳健PP型度量与估计

本文用Ｐｒｏｊｅｃｔｉｏｎ Ｐｕｒｓｕｉｔ方法给出了一类新的多元位置的稳健ＰＰ型度量与估计，证明了它不公文 具有同变性，渐近正态性，而且具有高效率与高崩溃点等优良性质，尤其它具有形式简单，计算容易的特点。     

PURE SUBMODULES AND TORSION FREE IMAGES OF COMPLETELY DECOMPOSABLE TORSION FREE MODULES

ABSTRACT

Prebalanced and precobalanced sequences play an important role in the investigation of Butler Modules. For Butler groups (modules over the integers), they are equivalent conditions. This is not the case for modules over integral domains in general. We investigate conditions when one type of exactness would imply the other. We show that for analytically unramified domains, the equivalence of prebalanced and precobalanced exactness will hold if and only if every maximal ideal has a unique maximal ideal lying over it in the domain's integral closure.     

ON EXISTENCE AND UNIQUENESS IN A FREE BOUNDARY PROBLEM FROM COMBUSTION

ABSTRACT

We study a free boundary problem for the heat equation describing the propagation of laminar flames under certain geometric assumptions on the initial data. The problem arises as the limit of a singular perturbation problem, and generally no uniqueness of limit solutions can be expected. However, if the initial data is starshaped, we show that the limit solution is unique and coincides with the minimal classical supersolution. Under certain convexity assumption on the data, we prove first that the limit solution is a classical solution of the free boundary problem for a short time interval, and then that the solution, in fact, stays classical as long as it does not vanish identically.     

Carleson测度与Bloch的刻画

在文中，对于C^n中有界强拟凸域。我们得到Carleson测度，消没Carleson测度的刻画。利用Carleson测度，我们还得到Bloch，小Bloch的刻画。     

WHITHER OIL PRICES: THE EVIDENCE FROM THEORY

This paper suggests a likely course of oil prices over the next several yearsn the basis of theoretical models of the world oil market calibrated to pre-1973 levels of prices, production, and reserves. The current competitive environment, with price in the $10-$16 per barrel range and increasing very gradually, should prevail until the early 1990's. At that time excess supply and excess capacity in the industry will all but disappear, making a jump to the OPEC cartel's joint wealth-maximizing price of about $25-$30 per barrel likely.     

集合的对称差及其测度

集合的对称差是集合的基本运算之一,它在测度论及其应用中扮演着一个重要的角度,本文深入地对集合的对称差进行讨论,研究了它的性质,通过集合的不交分解揭示了若干个集合的对称差的本质,给出了关于集合的对称差的测度计算公式。