宁夏引黄灌区现代农业发展问题研究

宁夏引黄灌区现代农业的发展,是我国西北地区农业现代化的重要组成部分。文章通过对宁夏引黄灌区农业发展现状的研究,总结出灌区内现代农业发展的示范性模式,并针对灌区农业现代化过程中出现的部分问题进行对策探讨,以期为西北地区现代农业的发展提供理论参考。     

Intraday bidirectional volatility spillover across international stock markets: does the global financial crisis matter?

This article studies volatility spillover between the US and the three largest European stock markets (Frankfurt, London and Paris) around the time of the recent Subprime crisis. In order to investigate the impact of the latter, we break our sample down into two sub-periods: a pre-crisis period and a post-crisis period, using a structural break test that has the advantage of endogenously testing for further breaks in the data. Unlike previous studies that have frequently investigated this issue using low frequency data, our article makes use of intraday data. Accordingly, using Threshold generalized autoregressive conditional heteroscedasticity (GARCH) model estimations, we find weak evidence of volatility transmission between the two regions before the Subprime crisis. However, during the post-crisis period, we record returns and volatility spillover from US to European markets and vice versa at different times of the trading day, indicating that the two regions became more dependent during the recent Subprime crisis, a finding that supports the contagion hypothesis between the US and European stock markets.     

Technological forecasting at the Korean stock market: A dynamic competition analysis using Lotka–Volterra model

The purpose of this paper is to attempt to analyze the dynamic relationship between the Korean Stock Exchange (KSE) and Korean Securities Dealers Automated Quotation (KOSDAQ), two competing markets at the Korean stock market, in the viewpoint of technological forecasting of competition. The Lotka–Volterra system of equations, one well-known competitive diffusion models, is adopted to represent the competitive situations of the Korean stock market and it is estimated using daily empirical index data of KSE and KOSDAQ during 1997–2001. The results show that there existed a predator–prey relationships between two markets in which KSE acted as a prey for the time being after the emergence of KOSDAQ. This interaction was altered to symbiotic relationship and finally to pure competition relationship. We also perform an equilibrium analysis of the estimated Lotka–Volterra equations. As a result, we find that there is an equilibrium point in a dynamic sense. However, the equilibrium point could be unstable in the latest pure competition relationship.     

基于成本控制的工程项目划分

根据建筑工程项目成本控制管理和工程预算定额计价模式,运用遗传全局优化计算方法,分析了基于成本优化控制下的工程项目划分的可操作性。依据问卷调查资料,获取优化计算参数,并综合计算得到了建筑工程分部工程的划分,重点为基础工程、梁柱工程、墙体工程、土石方工程、屋盖工程等工程实施项目,这种划分方法对建筑工程建设与管理提供一定的借鉴。     

沪市不同行业间信息的溢出效应研究

通过向量自回归模型和多元GARCH-BEKK模型对沪市工业、商业和地产行业之间的均值过程和条件方差过程的信息溢出效应分析发现,三个行业间存在收益过程的单向溢出效应,且除工业类对商业类股价波动的溢出效应不明显之外,其它均存在显著的波动双向溢出效应。     

农业供应链金融创新与践行——基于龙江银行农业产业金融创新调研

改善农村金融服务,创新金融产品和服务,必须有创新的理念.龙江银行在创新理念指导下,创新了农业供应链金融的五种模式和六种金融产品,有效地促进了农业发展,实现了农业供应链的各经营主体共赢,各得其所.创新的农业供应链金融模式及其配套新产品的践行,取得了一定的经济和社会效益,具有重要的推广价值.     

创业网络的概念发展——一个系统的三维模型

创业网络研究已经取得了较为丰富的成果,但是对于创业网络概念本身还缺乏系统化的概念框架。本文对创业网络概念进行了界定,并且从关系主体、关系属性、关系产出三个维度对创业网络概念内涵进行了探讨,基于上述分析,本文提出了一个系统的创业网络三维概念模型。     

煤矿建设工程造价控制研究

随着市场经济的发展,煤炭市场在经过黄金十年的辉煌后,受产能过剩、环境保护压力以及进口煤激增等因素影响,煤价下跌、库存增加、成本上升,整个行业陷入亏损的泥潭中。在当前的煤矿建设过程中,如何应对严峻的市场形势及时代发展潮流,以辩证发展的眼光看待煤炭工程建设造价管理工作显得尤为重要。做好煤炭建设工程造价管理工作在整个经济社会及企业发展中具有至关重要的作用与意义。     

China's macroeconomic stability – an empirical study based on survey data

A complete financial stability analysis should include investigation on macroeconomic stability since macroeconomic development and potential imbalance can increase the financial instability and trigger a financial crisis. Survey data of rating on China's macroeconomic stability is analyzed by estimating an ordered logit model with random effect. Among the candidate macroeconomic indicators, we found that inflation is the key variable that determines China's macroeconomic stability, followed by the change in budget balance and GDP growth gap.