基于投资效能的分配决策模型在工程建设投资决策中的应用

在基于投资效能最大化的基础上,对工程建设投资分配模型的建立进行了初步的分析,为提高投资分配的决策提供了科学依据。     

经贸往来会推动社科学界的国际合作吗？--来自引力模型的证据

合作研究在当代学术界渐渐替代了独立研究,成为当前研究的主要类型之一,而且随着前沿领域的进一步扩展,研究创新的难度进一步提升,跨国的合作研究也愈发重要。选择2004～2010年间SSCI论文作者所在机构的国别,通过引力模型实证检验了贸易往来对于论文合作的推动作用。同时分析了双边贸易协定、产业结构趋同与发展水平的趋近等因素的影响,发现这些因素都会对学界的国际合作产生正向影响。     

基于GIS的半山丘陵区农村居民点空间布局及优化分析——以山西省襄垣县为例

农村居民点布局的调整与优化是新一轮土地利用总体规划的重要内容,对协调人地关系、增强区域经济、统筹城乡发展等具有重要的作用。以地处黄土高原半山丘陵区的襄垣县为研究对象,结合DEM、第二次土地调查数据库等相关资料,从海拔、坡度、交通、水源等方面对居民点的空间特征进行了定量分析,采用专家咨询法对选取的指标赋予相应的权重并逐级打分,将研究区的自然地理等级划分为优等区域、中等区域和差等区域,根据研究区人口、经济、地质灾害等情况,将研究区的居民点划分为异地搬迁型、保留发展型和优先发展型,确定了31个村作为研究区的中心村。     

土地监察博弈与策略抉择

违法用地问题,一直是当前国家土地管理中的热点和难点问题。针对当前违法用地的现状,文章提出了土地监察员和地方政府之间的监察与反监察的博弈观点,并建立了他们之间的博弈模型。通过分析模型中的有关参数,提出了解决违法用地监察中信息不对称问题的方法,并探究了国家减少违法用地行为的对策和措施。     

On the forecasting of the challenging world future scenarios

Logistic and power law methodologies for both retrospective and prospective analyses of extended time series describing evolutionary growth processes, in environments with finite resources, are confronted. While power laws may eventually apply only to the early stages of said growth process, the Allee logistic model seems applicable over the entire span of a long range process. On applying the Allee logistic model to both the world population and the world gross domestic product time series, from 1 to 2008 AD, a projection was obtained that along the next few decades the world should experience a new economic boom phase with the world GDP peaking around the year 2020 and proceeding from then on towards a saturation value of about 142 trillion international dollars, while the world population should reach 8.9 billion people by 2050. These results were then used to forecast the behavior of the supply and consumption of energy and food, two of the main commodities that drive the world system. Our findings suggest that unless the currently prevailing focus on economic growth is changed into that of sustainable prosperity, human society may run into a period of serious economical and social struggles with unpredictable political consequences.     

会计学专业课程建设和“五化三结合”教学模式的构建

根据广东省江门市五邑地区的经济特点以及会计人才的需求情况，探索了我校会计学专业课程平台体系的构成并在此基础上，从系统的观点出发，构建了“五化三结合”的专业人才培养模式。     

Dynamic causality between the U.S. stock market,the Chinese stock market and the global gold market: implications for individual investors’ diversification strategies

This paper proposes a generalization of the prior VAR and EGARCH model to explore the linkage between returns and volatility transmissions in the U.S. stock market, the Chinese stock market, and the global gold market from 10 July 1996 to 20 July 2018. We found that past returns of the U.S. stock market can predict the current returns of the other two markets, and that significant reciprocal volatility transmission existed within and across all three markets. We further implemented average out-of-sample (OOS) forecasting to show that a risk-adjusted portfolio, such as mean-variance with sample estimator, does not outperform an equal-weighted portfolio. This provides insights for individual investors and helps to explain the ongoing disagreement in the portfolio literature concerning the effectiveness of risk-adjusted portfolios and equal-weighted portfolios when the number of assets is small.