基于脉冲响应的海洋经济与产业结构演进研究

中国拥有丰富的海洋资源,海洋经济潜力巨大。海洋经济发展与海洋产业结构演进形成了良性的互动机制,但对其与内陆产业结构的研究不足。论述海洋经济与内陆产业结构演进的作用机制,并基于向量自回归模型实现海洋经济与产业结构演进的脉冲响应分析,得出海洋经济的发展短期内会促进第二产业的发展,长期内第二产业所占比例呈下降趋势,第三产业所占比例不断提高。结合中国海洋经济发展现状给出政策建议。     

西部天保工程建设对农民收入的影响效应实证分析

西部地区是我国天然林资源保护工程的重点建设区域,工程建设与农民收入息息相关。运用2003—2011年西部11个省份的面板数据,采用面板向量自回归和脉冲响应分析研究工程建设对农民收入产生的影响。结果表明:西部地区天保工程建设在短期内对农民收入和城乡收入差距的影响具有一定的波动性,从长期来看,工程建设降低了农民的整体收入,并且拉大了城乡收入之间的差距。因此我国西部地区的天保工程不应继续通过加大资金投入的方式来进行建设,而应在投资建设保持稳定的前提下,通过对现有政策进行改进来提高农民收入。     

Price Setting With Menu Cost for Multiproduct Firms

We model the decisions of a multiproduct firm that faces a fixed “menu” cost: once it is paid, the firm can adjust the price of all its products. We characterize analytically the steady state firm's decisions in terms of the structural parameters: the variability of the flexible prices, the curvature of the profit function, the size of the menu cost, and the number of products sold. We provide expressions for the steady state frequency of adjustment, the hazard rate of price adjustments, and the size distribution of price changes, all in terms of the structural parameters. We study analytically the impulse response of aggregate prices and output to a monetary shock. The size of the output response and its duration both increase with the number of products; they more than double as the number of products goes from 1 to 10, quickly converging to the response of Taylor's staggered price model.     

Focused information criterion for locally misspecified vector autoregressive models

This paper investigates the focused information criterion and plug-in average for vector autoregressive models with local-to-zero misspecification. These methods have the advantage of focusing on a quantity of interest rather than aiming at overall model fit. Any (su?ciently regular) function of the parameters can be used as a quantity of interest. We determine the asymptotic properties and elaborate on the role of the locally misspecified parameters. In particular, we show that the inability to consistently estimate locally misspecified parameters translates into suboptimal selection and averaging. We apply this framework to impulse response analysis. A Monte Carlo simulation study supports our claims.     

二阶脉冲中立型阻尼微分方程新的振动性判据

研究具有阻尼项的脉冲二阶泛函微分方程解的振动性,建立了一些新的解的振动性的充分性判据,推广并改进了已有文献中的相关结果,并加以例证。     

我国财政支农支出与农业产出增长的动态关系研究——基于1978-2010年时序数据的实证分析

运用VAR模型的动态经济计量分析方法,对1978-2010年中国财政支农支出、第一产业就业人员和第一产业增加值之间的关系进行实证分析。结果表明,中国财政支农支出、第一产业就业人员与第一产业增加值之间存在长期稳定的均衡关系,但从短期来看,财政支农支出并不是第一产业增加值增长的原因。财政支农支出冲击对第一产业增加值有正向影响,并在冲击后的第6年,对第一产业增加值的正向影响达到最大,但整体上影响幅度较小,且财政支农支出冲击对第一产业增加值波动的贡献份额也较小,并依据上述分析,提出相应的政策建议。     

Mindfulness in Patients With Gambling Disorders

This study explored facets of mindfulness between patients diagnosed with a gambling disorder (n = 26) and a community sample of non-gambling-disordered individuals (n = 33). Multivariate statistics comparing group differences showed the gambling-disordered patients exhibited significantly lower levels of mindfulness, emotional regulation, stress coping, and impulse control compared to the non-gambling-disordered group. Overall, gambling severity was negatively associated with higher levels of mindfulness and positively linked to indices of emotional dysregulation, stress proneness, and impulsivity. Correlations between mindfulness and emotional dysregulation and impulsivity were much stronger than those between mindfulness and the severity of disordered gambling behaviors as measured by the National Opinion Research Center DSM Screen for Gambling Problems (NODS). These findings are discussed in the context of possible implications for future directions in exploring mindfulness-based interventions as a plausible intervention among those with gambling disorders.     

房价快速上涨现象的实证研究——以浙江省为例

论题运用协整检验和脉冲响应分析了房价的主要影响因素。实证结果显示：房价存在自我强化的正反馈,房价上升与房地产投资和房地产开发贷款快速增加并存,而这显然违背供大于求导致商品价格下跌的经济学规律。这一结果说明,房地产市场中可能存在结构型泡沫、地价型泡沫、资产型泡沫和需求型泡沫。增强市场理性预期、建立预警机制等比单纯打击房产投机商更为有利。     

国际物流与国际贸易关系的实证研究

根据我国2002—2008年外贸物流与交易统计数据,采用基于VAR模型的脉冲响应函数对国际物流与国际贸易的关系进行动态实证分析。分析结果表明,发展现代物流产业可以显著提升我国的对外贸易水平,但当前我国快速发展的国际贸易对物流业发展的拉动作用微弱,加工贸易占主体地位且缺乏贸易竞争力的对外贸易结构、国际物流服务有效供给不足是国际贸易对物流业发展驱动不显著的主要原因。     

我国科技人才流动动因的实证研究

利用我国1998-2007年科技人才年增量与对科技人才流动具有影响的因素的数据,建立我国科技人才流动影响因素指标体系,通过相关分析法对影响我国科技人才流动的因素进行了分析,并通过VEC模型、格兰杰因果检验和脉冲响应分析明确因果方向和影响模式。结果表明,影响科技人才流动最主要的动因是R＆D经费和高技术产业增加值,并且其对科技人才流动均为单向因果关系。