Remarks on the strong law of large numbers for a triangular array of associated random variables

A strong law of large numbers for a triangular array of strictly stationary associated random variables is proved. It is used to derive the pointwise strong consistency of kernel type density estimator of the one-dimensional marginal density function of a strictly stationary sequence of associated random variables, and to obtain an improved version of a result by Van Ryzin (1969) on the strong consistency of density estimator for a sequence of independent and identically distributed random variables.     

Trading with Asymmetric Volatility Spillovers

Abstract:  We study the profitability of trading strategies based on volatility spillovers between large and small firms. By using the Volatility Impulse-Response Function of Lin (1997) and its extensions, we detect that any volatility shock coming from small companies is important to large companies, but the reverse is only true for negative shocks coming from large firms. To exploit these asymmetric patterns in volatility, different trading rules are designed based on the inverse relationship existing between expected return and volatility. We find that most strategies generate excess after-transaction cost profits, especially after very bad news and very good news coming from large or small firm markets. These results are of special interest because of their implications for risk and portfolio management.     

基于大梯度极差理论的生产性服务业协作政策研究——以京津冀经济圈为例

生产性服务业的大梯度极差理论是关于区域经济内不同经济体系之间生产性服务业发展水平具有较大梯度极差的特征和原因理论研究。京津冀生产性服务业在发展水平上具有明显的大梯度特征。加强京津冀生产性服务业协作必须从建立协作组织、健全合作协议、合理规划布局、塑造良好环境和做大做强企业等方面采取有效措施。     

黑龙江省大中型企业产品创新状况调查研究

伴随着产品生命周期的大大缩短 ,产品创新的速度也与日俱增。然而在WTO背景下 ,黑龙江省大中型企业的产品创新状况却亟待加强。通过对黑龙江省 70家大中型企业的产品创新工作状况进行测度和比较 ,找出我省大中型企业在产品创新工作方面存在的问题和不足 ,并有针对性地提出相关的对策和建议。     

油气井用射孔器评价方案的建立

通过对SY／T5128《油气井用射孔器通用技术条件》的应用分析，结合射孔器产品的技术发展，并对按API RP19B要求制作的混凝土靶试验对比验证，对该标准指标进行修订，增加射孔器评价品种，引进了对大孔径、高孔密射孔器的评价方案．规范了产品命名和术语，并应用计量抽样和计数抽样两种评价方案对射孔器评价，以求正确评价射孔器性能。     

大型金融机构能否为中小企业提供融资服务——兼评“金融机构观”

本文认为“金融机构观”对解除虽小企业融资困境无补。无论从国外还是国内、从理论还是实践、从金融电子化发展还是行业特征看,目前 甸不缺少中小金融机构,尤其是小型金融机构,而缺少的是大型银行。大型银行依其众多的分支机构,良好的社会效益以及经济结构调整等优势,完全有能力为中小企业提供融资服务。     

四大直辖市批发零售业空间迁徙研究

本文通过对四大直辖市各区域批发零售业的就业人数变动情况进行了分析,研究了该行业在十年来城市空间布局的变化。经过研究表明,20世纪90年代中后期以来,批发零售业由城市中心区向外围和近郊区迁徙的特征比较明显,体现了我国大城市的批发零售业发展趋势。     

中国大型连锁零售企业成长路径评析

近年来,大型连锁零售企业以其规范运作、品牌经营、经济实惠、方便快捷、轻松随意等优点赢得了广大消费者的认同,并呈现出行业集中度不断提高、业态多样化、跨区域经营、外资和民营企业加快扩张、并购重组不断加剧等特征。文章指出,市场定位模糊、规范化程度低、物流配送体系与信息管理系统不完善、经营管理人才缺乏等是当前制约大型连锁零售企业成长的主要因素。大型零售企业实现成长的根本途径在于构建核心竞争力。为实施核心竞争力战略,大型连锁零售企业应进行科学的企业战略定位,这是其持续快速成长的前提;进行规范化经营,这是大型连锁零售企业持续快速成长的基础;实现信息化及高效物流配送系统,这是大型连锁零售企业持续快速成长的手段;加强人力资源开发与管理,这是大型连锁零售企业持续快速成长的核心。     

Partnership or self-reliance entry modes: Large and small technology-based enterprises’ strategies in overseas markets

This study compares large firms against small and medium-sized firms in technology industries and assesses the differences between them in the choices between partnership and self-reliance entry modes. A sample of 166 large, small, and medium-sized firms in technology industries was analyzed using LISREL 8.30. Results indicate that, given innovative advantage, large and small and medium-sized firms both prefer self-reliance entry modes. With violent market dynamism, large firms prefer self-reliance entry modes while small and medium-sized firms prefer partnership entry modes. When high promotional effort is required, small and medium-sized firms prefer partnership entry modes and large firms may prefer partnership entry modes as well. This study provides important guidance for managers of large and small technology-based firms to select their entry modes when they enter overseas markets.     

What are the Determinants of Large‐scale Farming in China?

The Chinese Government has increased its focus on expanding farm scale to promote agricultural development since 2010. A series of favorable polices has been adopted to support large‐scale farming. Using a multivariate probit model and 2015 and 2016 rural household survey data, the present paper examines the factors that influence small farmers' decision to become large‐scale farmers. The empirical regression results suggest that the decision to become a large‐scale farmer is significantly influenced by household human capital, cooperative membership, marketing channels, land‐transfer contracts and government policies. However, the influence of these factors differs with respect to becoming large‐scale grain and non‐grain farmers. These results imply that policy tools should target these factors and the appropriate group of small‐scale farmers. Generally, both central and local governments should promote large‐scale farming by enhancing rural households' human capital, improving marketing channels and providing agricultural social services, as well as encouraging returning migrant workers to engage in large‐scale farming.