检索结果-南通市图书馆

CHARACTERIZATIONS OF SEMI-PREQUASI-INVEXITY

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2014年第5期27卷 1008-1026页

作者： ZHAO Yingxue MENG Xiaoge QIAO Han WANG Shouyang COLADAS URIA Luis School of international trade and economics University of International Business and Economics School of economics and Management Beijing University of Aeronautics and Astronautics School of Management University of Chinese Academy of Sciences Institute of Systems Science Academy of Mathematics and Systems ScienceChinese Academy of Sciences Department of Statistics and Operations research Faculty of MathematicsSantiago de Compostela University

Because of its importance in optimization theory,the concept of convexity has been generalized in various *** these generalizations,to seek some practical criteria for them is especially *** this paper,some criteria are developed for semi-prequasi-invexity,which includes prequasi-invexity as the special *** characterizations among semi-prequasi-invex functions,strictly semi-prequasi-invex functions,and strongly semi-prequasi-invex functions are presented.

关键词： Convex programming dense semi-prequasi-invex function strictly semi-prequasi-invex function strongly semi-prequasi-invex function

The Impact of the Establishment of National High-tech Zones on Total Factor Productivity of Chinese Enterprises

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

China Economist 2023年第3期18卷 68-93页

作者： Wang Mingyi Liu Xiaoyu School of international trade and economics Shandong University of Finance and EconomicsJinanChina

The National High-tech Zone(NHTZs)is an important strategic platform for cultivating high-tech industries and realizing high-quality economic development in *** on the combined data from 2006 to 2014 of the industrial enterprise database,the customs database,and the China Development Zones Audit and Announcement Catalogue(abbreviated asthe Catalogue),this paper systematically investigates the influence of the construction of NHTZs on enterprise’s total factor productivity(TFP).Results show that NHTZs have a positive impact on the TFP of enterprises in the zone,and this conclusion is still valid after considering endogeneity ***,the above productivity effects of NHTZs are heterogeneous in terms of enterprise ownership,external environment and establishment time,and NHTZs have greater stimulation effects on enterprise productivity after comparing with other types of functional *** investigation of the specific mechanisms at play shows that NHTZs promote the TFP of enterprises in the zone through the release of preferential policies,strengthening the“technology spillover effects”of imported intermediate goods,enhancing enterprise’s innovation ability and attracting *** addition,based on the decomposition of industry productivity,this paper also investigates the impact of NHTZs on changes in industry productivity and finds that NHTZs promote the overall productivity of specific industries mainly by stimulating the productivity improvement of incumbent enterprises and expanding the market share of high-productivity ***,the preferential policies of NHTZs do not significantly stimulate high-productivity enterprises to enter the zones,nor do they cause low-productivity enterprises to *** research is helpful in objectively evaluating the economic effects of the NHTZs in China and in providing a theoretical basis for its further adjustment.

关键词： National High-tech Zones(NHTZs) total factor productivity(TFP) difference-in-differences changes in industry productivity

Bilateral Relations and Exports:Evidence from Google Big Data

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

China & World Economy 2023年第1期31卷 182-210页

作者： Jing Li Hongkui Liu Qian Xie School of international trade and economics University of International Business and EconomicsChina Institute of economics Chinese Academy of Social SciencesChina

This paper investigates the effect of bilateral relations on exports using data from Google Global *** finds that bilateral relations significantly reduced the negative effect of cultural distance on exports,indicating that they can promote exports by reducing trade *** paper finds that higher average Goldstein scores of events correlated with more exports and that bilateral relations had a larger effect on trust-intensive products,indicating that positive relations built trust and decreased the emotional distance between trading *** results also show that bilateral relations promoted exports at both the intensive and extensive margins but with a greater effect on the ***,bilateral relations had a greater positive effect on developing countries than on developed *** results were qualitatively unchanged when endogeneity issues and robustness concerns were considered.

关键词： bilateral relations cultural distance export Google big data

Differential Game Model of Resource Extraction with Continuous and Dynamic Updating

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of the Operations research Society of China 2024年第1期12卷 51-75页

作者： Ovanes Petrosian Tihomirov Denis Jiang-Jing Zhou Hong-Wei Gao School of Mathematics Harbin Institute of TechnologyHarbin150001HeilongjiangChina School of Automation Qingdao UniversityQingdao266071ShandongChina Faculty of Applied Mathematics and Control Processes Saint-Petersburg State UniversitySaint PetersburgRussia National research University"High School of economics" Saint-PetersburgRussia School of Mathematics and Statistics Qingdao UniversityQingdao266071ShandongChina

This paper is devoted to a new class of differential games with continuous and dynamic *** direct application of resource extraction in a case of dynamic and continuous updating is *** is proved that the optimal control(cooperative strategies)and feedback Nash equilibrium strategies uniformly converge to the corresponding strategies in the game model with continuous updating as the number of updating instants converges to *** results are presented for an optimal trajectory(cooperative trajectory),equilibrium trajectory and corresponding payoffs.

关键词： Differential games Dynamic updating Continuous updating Optimal control Feedback Nash equilibrium

DRUG PRICING PATTERN IN CHINA： DILEMMA AND COUNTERMEASURE

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science and Systems Engineering 2018年第3期27卷 340-366页

作者： Mingxi Wang Yi Hu Han Qiao Chuangyin Dang School of international trade and economics University of International Business and Economics Beijing 100029 China School of economics and Management University of Chinese Academy of Sciences Beijing 100190 China Department of Systems Engineering and Engineering Management City University of Hong Kong Kowloon Hong Kong

Maybe it is the most important medical reform for current China to adopt the bid-and-procurement scheme to correct the distortion of pharmaceutical resources allocation. Nevertheless, overpriced drugs often happen. This article aims to identify potential factors leading to the overpriced. Based on the mechanism rules of the scheme, it is found that unethical doctors are crucial to high price markup in the pricing pattern of drugs. Under China＇s actual conditions, asymmetric ownership is identified to be another cause of the overpriced by developing an asymmetric bidding model. How are the impacts of these two factors to be alleviated？ Upon examination, several reform measures cannot effectively avoid the occurrence of the overpriced. Yet, the issue is very urgent for China because it is facing with the problem of population aging. Therefore, alternative options - a regulation-penalty tool and an investment subsidy policy - are proposed to improve China＇s health care.

关键词： The bid-and-procurement scheme overpriced drug asymmetry health-care reform

Non-Symmetry of China’s and US Monetary Policy Spillovers:Theoretical Modelling and Empirical Analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国经济学人:英文版 2023年第5期18卷 76-97页

作者： Mei Dongzhou Zhang Mi School of international economics and trade Central University of Finance and Economics(CUFE)BeijingChina

This study develops a structural vector autoregression(SVAR)framework to empirically examine the reciprocal transmission channels of monetary policies between China and the United *** primary objective is to discern potential disparities in the spillover effects of monetary policies and ascertain any contrasting mechanisms underlying these effects across the two *** on our research,it appears that there exists a certain level of non-symmetry in the spillover effects of monetary policy between the two ***,this paper provides adequate analysis of disparities in the trade framework,capital control,and financial market operations of both countries in constructing a dynamic stochastic general equilibrium(DSGE)model that incorporates financial frictions for the examination of the theoretical *** empirical findings indicate that China’s monetary policy creates a spillover effect primarily through *** China,following an increase in its interest rates,the domestic economic activity will experience a contraction,leading to a decline in both investment and ***,this will result in a decrease in China’s imports of investment goods from the United States,impacting the output of the US *** contrast,the US monetary policy exerts a spillover effect primarily through *** increase in interest rates by the United States is associated with a notable outflow of capital from *** leads to a rise in the financing costs for Chinese firms,consequently diminishing their overall net *** light of the financial accelerator effect,corporate external financing risk premium will continue to increase,exacerbating the downward trajectory of China’s output.

关键词： Monetary policy spillovers non-symmetry trade channel financial channel international policy coordination

Intergovernmental Vertical Fiscal Relations Reform and Grassroots-Level Government’s Finance Guarantee:Based on Quasi-Natural Experimental Analysis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

China Finance and Economic Review 2019年第2期8卷 3-24页

作者： Jing Ning Xujie Zhao Institute of Finance and economics Central University of Finance and EconomicsChina Associate Professor School of International Trade and EconomicsUniversity of International Business and EconomicsChina

Grassroots-level government’s financial capability is crucial to the performance of financial functions of the whole *** to adjust the intergovernmental vertical fiscal relations in order to improve grassroots-level government’s finance situation is important for accelerating the establishment of a modern fiscal *** recent years,Province-Directly-Governing-County(PGC)fiscal reform has been an important attempt to straighten out vertical fiscal relations between governments,and thus has made it possible for studying the effects of vertical fiscal relations reform on grassroots-level government’s finance based on quasi-natural experimental ***,this article empirically analyzes the PGC fiscal reform based on nationwide county-level data applying Propensity Score Matching with Difference-in-Difference Method(PSM-DID),in order to investigate the effect of the reform on county governments’disposable revenue and identify the influence *** results indicate that PGC fiscal reform has a significant effect on promoting fiscal disposable revenue of county ***,we find that the reform increased upper-government transfer payment more than county-level own revenue,which manifests the reform increase county governments’fiscal disposable revenue by means of restraining prefecture-level cities’from grabbing county-level transfer.

关键词： intergovernmental vertical fiscal relations reform grassroots-level government finance guarantee

Does Foreign Venture Capital Provide More Value-added Services to Initial Public Offering Companies in China？

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China & World Economy 2016年第2期24卷 90-106页

作者： Yin He Bin Li Yunhua Tian Lijun Wang School of international trade and economics University of International Business of EconomicsBeijingChina School of economics and trade Guangdong University of Foreign StudiesGuangzhouChina Business School Beijing Technology and Business University

This paper uses all 1404 initial public offerings （1PO） undertaken between 2002 and 2012 in China to analyze whether venture capital （VC） investment, especially foreign VC investment, brings more or less value-added services to the invested companies during the 3 years following the IPO. The results show that venture capitalists choose to invest in companies with higher value potential, and, in turn, the value of the companies increases after the 1PO is undertaken;foreign VC adds more value to companies than domestic venture capital. However, the profitability of VC-backed and non VC-backed companies after IPO does not differ significantly. Nevertheless, it is shown that VC plays an active role in China.

关键词： China foreign venture capital initial public offering profitability value

China＇s Free trade Ports： Effective Action Against the Threat of De-globalization

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China & World Economy 2018年第4期26卷 62-81页

作者： Wei Tian Zhuxi Xu Miaojie Yu Huihuang Zhu School of international trade and economics University of international Business and Economics China National School of Development Peking University China

With sluggish external demand and increasing trade protectionism by the U5~l and the European Union, China is facing severe challenges in implementing its deeper, ongoing reforms. To respond actively to such challenges, the Communist Party of China ＂s 19th National Congress proposed to ＂promote a new pattern of all-round opening up. ＂ in particular, the establishment of JEee trade ports is considered an important means to realize deeper integration with the world economy. This paper discusses the background, the motivation, the possible challenges as well as a Jeasible path for the successful implementation of free trade ports in China. Based on the international experience, the construction or free trade ports in China requires .freer trade in goods, high mobility of talent and free capital flow.

关键词： de-globalization free trade port international trade opening-up policy