县域农业土地利用适宜性评价与优化研究以山西省原平市为例

目的 通过对原平市农业产业适宜性的定量评价,并结合土地利用的角度对原平市农业产业进行布局优化。方法 文章基于GIS空间分析和AHP方法,建立农业适宜性评价指标体系,刻画原平市农业产业适宜性指数的空间分布格局,得出适宜性分级图,进一步叠加原平市土地利用数据,进行农业优化布局分析。结果 原平市农业适宜性水平整体较低,只有14.82%的区域适宜和非常适宜农业生产,集中分布于中部平原地区;53.21%的地区基本适宜农业生产,主要分布于东部丘陵和西部山区;31.97%的地区不适宜农业发展,主要分布于西部山区;同时,在不适宜农业生产的地区中约有15.3%的土地被开垦为耕地,限制了该市整体农业生产效率的提高。结论 与传统的土地适应性相比,该研究嵌入了社会经济因子和管理水平的影响分析,使得研究结果更贴合实际。如何进一步挖掘更全面表征气候、生态、社会经济等影响因素,构建更加全面的适宜性评价指标体系,制定区域有别、因地而异的评价体系标准,是加强农业土地适宜性评价科学性和准确性的有利保障。     

Unfolding the impact of leadership and management on sustainability performance: Green and lean practices and guanxi as the dual mediators

This study aims to empirically evaluate the predictors that influence sustainability performance among manufacturing firms. Leadership and management, green and lean practices, and guanxi were examined to determine whether these predictors are directly and/or indirectly affecting sustainability performance; 160 valid responses were collected and partial-least-squares-structural-equation-modeling (PLS-SEM) was used to analyze the data. The results showed that leadership and management positively influenced green and lean practices and green and lean practices positively influenced sustainability performance. Leadership and management also positively influenced guanxi. Interestingly, leadership and management and guanxi do not exert a significant direct influence on sustainability performance. The findings contributed to the development of the resource-based-view theory further by empirically exploring the significance of leadership and management coupled with green and lean practices as competencies and capability to drive sustainability performance. The testing of the dual mediators' effects further added value to this study.     

城市国民经济和社会发展规划战略环境评价研究——以武汉市为例

城市国民经济和社会发展规划编制是否科学．会直接影响到城市其他规划的科学性，对城市未来的发展及生态环境状况影响重大。本文论述了对城市国民经济和社会发展规划开展战略环境评价的必要性和重要性．并结合（《武汉市国民经济和社会发展第十一个五年总体规划纲要》探讨了我国城市国民经济和社会发展规划战略环境评价的技术思路和技术方法。     

战略环境评价中的公众参与及实施条件分析

本文简要介绍了战略环境评价中公众参与的含义，着重分析了我国公众参与战略环境评价的重要意义和作用，并立足我国国情对实施有效的公众参与所必需的制度框架和技术方法进行了深入探讨。     

历史与现在——国际商法的演进对我们的启示

文中对国际商法从古代商法、中世纪商人法到近代商法国内化以及现代商人法的历史演进过程进行研究,并从纵向和横向的角度解读了国际商法的发展带给我们的启示。     

改进的ＢＡ无标度网络模型在企业集群中的应用

各组成元素间的网络关系是企业集群的本质特征,其总体竞争力与其内部网络具有紧密联系。运用复杂网络理论研究了企业集群的无标度网络特征,并运用改进的无标度网络模型来定量分析集群网络中各构成要素的重要性,为集群向既定目标发展提供了控制依据。     

我国商业银行利率风险度量模型的现实选择

随着利率市场化的推进,利率风险上升为银行的主要风险,利率风险管理成为商业银行风险管理的重点.利率风险度量是进行利率风险管理的基础,因此选择合适的利率风险度量模型具有积极意义.本文试从我国商业银行的利率风险状况出发,说明了利率风险管理尤其是利率风险度量的重要性,分析了利率敏感性缺口模型、久期模型和模拟法三类主要的利率风险度量模型及其利弊.最后结合成本收益原则以及我国现实约束条件,推理出我国商业银行短期内应逐步建立起以久期模型为主,利率敏感性缺口模型为辅的利率风险度量管理体系;长期内应大力创造条件,实现以模拟法度量利率风险.     

Contracting and Reporting Conservatism around a Change in Fiduciary Duties*

We exploit an influential 1991 Delaware court ruling to examine simultaneously two types of conservatism that play important roles in resolving creditor–owner agency conflicts: contracting conservatism and reporting conservatism. The ruling expanded managerial fiduciary duties in favor of creditors for Delaware-incorporated firms in the vicinity of insolvency. In those firms, following the ruling, debt contracts are less likely to include conservative adjustments to accounting numbers used for covenant compliance (i.e., contracting conservatism decreases), while public financial reporting becomes more conservative (i.e., reporting conservatism increases). The decrease in contracting conservatism is concentrated in firms that exhibit a greater increase in reporting conservatism, suggesting that reporting conservatism is more cost-effective in resolving agency conflicts. In addition, the substitution effect is more pronounced in firms facing greater business uncertainty and firms with greater board independence.