中国林下经济产业发展效率评价--以31个省(区)面板数据为依据

依据2013——2018年中国31省(区)发展林下经济的投入产出数据,采用数据包络分析方法(DEA)对31省(区)林下经济效率水平进行评估。结果显示:中国林下经济发展存在区域不平衡特征,林下经济效率水平呈现缓慢下降趋势,纯技术效率水平低于规模效率水平。推进林下经济持续健康发展,需要合理制定各地林区林下经济发展规划,完善各省(区)林下经济产业配套设施建设、完善科技支撑体系,借鉴林下经济典型示范区域先进经验等促进林下经济效率提升。

政企分开政策驱动下国有森工企业转型路径研究

回顾了国家的林业政策,梳理了黑龙江国有森工企业的转型要素,分析了国有森工企业转型发展路径的影响因素。基于政企分开的政策因素与企业的发展需要,结合国有森工企业转型存在的现实问题,分别从企业转型能力、企业转型意愿和企业转型方向3个方面阐述政企分开政策对国有森工企业转型的驱动作用。在此基础上,提出在政企分开政策驱动下国有森工企业转型发展的实现路径,并从重新定位政府与市场关系、注重培育国有森工企业内部组织平台化转型路径和构建品牌转型路径3个方面进行国有森工企业转型发展的路径研究。

国有森工企业转型创新程度评价指标体系分析研究

在全面停伐的大背景下,国有森工企业的传统发展方式难以为继,国有林区陷入社会发展困境、林区职工民生困难、创新乏力等问题。根据企业转型的相关理论,对国有森工企业转型创新发展的现状进行分析,构建出技术创新程度、管理创新程度、社会创新程度和文化创新程度四类核心要素的指标体系,用模糊综合评判法对创新程度进行评价。得出国有森工企业的创新程度一般,需要提升技术创新的投入力度,降低社会创新的投入力度。根据结论对国有森工企业转型创新发展方向提出对策建议。

Role of NGOs in the National Significant Seismic Monitoring and Protection Regions

In this paper,we analyzed the One Foundations relief and reconstruction activities after the Yaan earthquake.The analysis shows that the participation of NGOs in disaster relief activities has undergone different stages.In the Jiujiang earthquake,NGOs participation was in the rudimentary stage.In the Wenchuan earthquake,they became one of the active participants.In the Yaan earthquake,they played an active role through a cooperation mechanism.That means NGOs have had the capability of resource mobilization and cooperation with them will improve disaster management capacities,especially in the national significant seismic monitoring and protection regions.

The Role of the National Significant Seismic Monitoring and Protection Regions Institution:From the Perspective of the RiskSociety Theory

Earthquake disaster risk,as a typical social disaster risk,is one of the most important risks in modern Chinese society.This study gives definitions of the institution,describes the formation history,the connotations and development and analyzes its role in the control of major social risks caused by earthquakes.Finally,the paper presents recommendations for continuous improvement of this institution under the guidance of risk society theory,and for its application to the government reform and social governance.

Conclusions on the Implementation of Regulation of the National Significant Seismic Monitoring and Protection Regions from 1996 to 2012 in the Chinese Mainland

The regulation of the National Significant Seismic Monitoring and Protection Regions(NSSMPR for short) is defined by the Law of the Peoples Republic of China on Protecting Against and Mitigating Earthquake Disasters.The first stage of implementation of the regulation of NSSMPR in the Chinese mainland was finished from 1996 to 2005.The second stage is being carried on from 2006 to 2020.With the support of the National Social Science Foundation,this paper follows up and evaluates the implementation of the regulation of NSSMPR from 1996 to 2012 in the Chinese mainland.Based on analysis of earthquake examples and investigation data,we find that the effect of disaster mitigation is good,and on this basis,some suggestions are proposed to improve the regulation of NSSMPR.

工艺参数对压铸Al-Si-Mg合金组织和性能影响

研究了浇注温度、压射时间和化学成分对压铸Al-Si-Mg合金显微组织中预结晶组织(ESCs)的数量和形貌以及对铸件本体力学性能的影响。结果表明,显微组织中的ESCs是影响铸件本体性能的重要因素。提升熔体浇注温度可以显著减少显微组织中的ESCs,并促进其形貌由树枝状向球状转变,提升铸件本体的屈服强度和硬度;增加压射等待时间,显微组织中的ESCs的面积分数和平均尺寸呈增大趋势,铸件本体的屈服强度和硬度呈下降趋势;Si含量由7.0%提升至7.5%,可降低液相线温度,显著减少ESCs,提升力学性能。通过调整浇注温度、压射等待时间和铝液化学成分,可以有效地减少ESCs的数量和尺寸,从而明显改善力学性能,特别是屈服强度和硬度。