对我国铁路运输业垄断程度的重新认识

我国铁路运输业一直被视作最接近于完全垄断的行业。然而,由于面临来自其它运输方式的激烈竞争,其垄断程度未必像人们想象的那么高。对我国铁路运输业的垄断程度进行测度的实证结果表明,其实际垄断程度和人们的想象的确有一定差距。对我国铁路运输业垄断程度的变动趋势进行分析,发现其总体趋势是不断下降的。当前,交通运输市场放开所引起的竞争潜能已基本释放完毕,在业内引入新的竞争主体将可能成为今后促进我国铁路运输业总体垄断程度继续下降的重要举措。

R&D subsidy policy of domestic firm considering foreign firm competition

Taking the advanced technology of the foreign firm into account, a mixed duopoly three-stage game model is established in the context of research and development（RD）investment subsidies and product subsidies for domestic firms provided by the government, and the RD subsidy policy of domestic firms in competition with foreign firms is analyzed.The equilibrium output, RD investment of the domestic firm, social welfare and the value of government subsidies are derived, in the case of the two policies, RD investment subsidies and product subsidies for domestic firms, provided by the government. The results show that, the equilibrium output and the optimal social welfare under the RD investment subsidy policy are both less than those under the product subsidy policy; the optimal RD investment under the RD investment subsidy policy is less than that under the product subsidy policy; and the RD product subsidy has a more obvious incentive effect on firm RD investment. Under the background of the leading edge of technology of foreign firms, the product subsidy policy drawn up by the government to encourage RD innovation of domestic firms is more effective than the RD investment subsidy policy.

Management of Foreign Market Entry： A Study of Czech Companies

Internationalization of company activities is the necessity of the development for majority of entrepreneurial subjects in the Czech Republic. Internationalization of entrepreneurial activities becomes a tool of business competitiveness. Selecting the right foreign entry mode is an important decision, which demands a lot of resources and thorough planning. The factors influencing company＇s choice of entry mode are divided into two main groups subsuming--external and internal factors. External factors consist of determinants regarding the company＇s environment while the intemal ones are determined by the company＇s specific factors. The opening of new markets such as in the Czech Republic has created the potential for small and medium-size enterprise （SME） expansion and investment. The objective of this paper is to present an application of the entry modes of the selected Czech entrepreneurial subjects. The companies included in the study are those that have undertaken internationalization activities and are incorporated in the Czech Republic. There were a total of 297 enterprises that participated in the research. The research method was an oral questioning and the main instrument was a questionnaire. A relatively low degree of Czech companies that have undergone intemationalization has resulted in the dominance of the least advanced forms of internationalization expansion, mainly exports with a small share of more advanced forms of foreign direct investments and a very low level of forms of international cooperation. Czech companies are in decision about the choosing the foreign entry mode influenced by the many factors. The greatest influence on the choice of foreign entry mode has entry mode variables. Entry mode variables constitute variables assessment characteristics of particular entry mode.

Core competitiveness of the western enterprise in China: risks and countermeasures

Core competitiveness is the source of competitive advantages as well as the guarantee of value growth of the enterprise. This paper discusses the cause of the risks of the core competitiveness of enterprises and the west enterprise, introduces analytical methods of the risks of the core competitiveness and measures guard against the risks of the core competitiveness.

Invasive plant rhizome production and competitiveness vary based on neighbor identity

Aims Within-species genetic and phenotypic variation have well-known effects on evolutionary processes,but less is known about how within-species variation may influence community-level processes.Ecologically meaningful intraspecific variation might be particularly important in the context of anthropogenic impacts on natural systems,such as agriculture and species invasion,because human actions can cause strong selection pressures.Methods In a greenhouse study,we explored intraspecific(30 accessions)and ecotypic variation(representing agricultural and nonagricultural habitats)in biomass and rhizome production in response to inter-and intraspecific competition and soil fertility of Johnsongrass(Sorghum halepense),a widespread invasive species and agricultural weed.Important Findings Contrary to our expectations and previous results,we did not find variation in biomass production among Johnsongrass ecotypes at this early life stage.However,we did find that Johnsongrass biomass varied substantially depending on competitor identity,soil fertility treatments and among accessions.Rhizomes were 11%larger in the agricultural ecotype and up to 3-fold larger in fertilized treatment;while rhizome biomass increased by~50%when fertilized,but did not differ among ecotypes.Interestingly,in competition,Johnsongrass produced 32%less biomass and 20%less rhizome mass with a conspecific than when competing interspecifically with corn.Our results indicate species-specific competitive responses and changes in rhizome allocation in response to neighbor identity;suggesting the possibility of adaptation by Johnsongrass to shift allocation under competition.