组织间学习与绿色创新:绿色吸收能力的调节作用

尽管组织间学习已经获得较多关注,但鲜有研究探讨它对绿色创新的影响。从组织间关系和双元性理论视角,提出了组织间的纵向利用式学习和横向探索式学习,基于组织学习理论和吸收能力理论,探究了两种组织间学习方式与绿色创新的关系,并检验了绿色吸收能力的调节作用。基于203家中国制造企业的调查数据,实证结果表明:纵向利用式学习和横向探索式学习都能显著正向影响绿色创新;相比横向探索式学习,纵向利用式学习对绿色创新的影响作用更强。绿色吸收能力在横向探索式学习与绿色创新之间也起调节作用,但它并不调节纵向利用式学习与绿色创新的关系。研究提出了不同的组织间学习方法与绿色创新的关系,丰富并拓展了绿色创新的相关研究。     

Comparison of dimension reduction methods for DEA under big data via Monte Carlo simulation

Data with large dimensions will bring various problems to the application of data envelopment analysis (DEA). In this study, we focus on a “big data” problem related to the considerably large dimensions of the input-output data. The four most widely used approaches to guide dimension reduction in DEA are compared via Monte Carlo simulation, including principal component analysis (PCA-DEA), which is based on the idea of aggregating input and output, efficiency contribution measurement (ECM), average efficiency measure (AEC), and regression-based detection (RB), which is based on the idea of variable selection. We compare the performance of these methods under different scenarios and a brand-new comparison benchmark for the simulation test. In addition, we discuss the effect of initial variable selection in RB for the first time. Based on the results, we offer guidelines that are more reliable on how to choose an appropriate method.     

电商扶贫背景下贫困主体获得感影响因素研究

本文基于电商扶贫案例,通过数理模型阐述影响贫困主体获得感的因素及其作用机理。本研究认为,电商扶贫不仅要对接或搭建电商平台,还需要重视产品、政策和服务的共同作用。电子商务为贫困地区打开了通向外部市场的信息渠道,贫困地区在外部需求的促进下实现了快速发展和产业集聚,是技术、商业模式和政策交替升级的结果。因此,电商扶贫政策要基于市场,服务体系建设应重视服务型产品的引入,电商平台需符合本地农业产业特征。     

一种利用均匀圆阵对称特性的近场源酉变换估计算法

针对现有均匀圆阵的近场源三维参数估计算法运算量大的缺点，提出了一种基于均匀圆阵对称特性的近场源酉变换估计算法。该算法利用均匀圆阵对称特性将阵列导向矢量进行酉变换和对角化分离处理，消除距离参数，把三维搜索问题化简为二维搜索问题，同时把复值方向矢量转化为实值方向矢量。计算机仿真结果显示,所提算法估计性能优于相关序列降维估计方法，与三维多重信号分类算法性能相当，且通过矩阵分离降维和实值化处理，减少了运算量，有利于工程实时处理。     

化肥价格变化对粮食价格的影响研究--基于省际动态面板数据模型的系统GMM检验

基于我国粮食价格与化肥价格变动趋势的分析,运用2006年~2017年省际动态面板数据模型和系统GMM方法,实证检验了化肥价格变动对粮食价格的影响。结果表明:化肥价格变动对粮食价格存在显著的正向影响,在考虑化肥价格影响下,农业生产服务、种子等农资价格对粮食价格也存在显著的正向影响,机械化农具和农药价格对粮食价格不显著,"价补分离"政策对粮食价格存在显著负向影响。因此,在化肥减量行动背景下,适度调控化肥价格,避免化肥价格上升挤占粮农利润,大力发展农业生产性服务业和种子业,继续实行"价补分离"政策,提高补贴精准性,减少农民投入成本。     

农村劳动力流动对脱贫的影响文献综述

关于农村劳动力流动与贫困之间的关系一直是社会各界广泛关注的焦点。本研究通过对相关文献的梳理，针对劳动力外出务工的减贫效应，从贫困缓解论、贫困加剧论以及不确定论三方面进行概述，重点分析劳动力流动对我国农村贫困的影响及机制。结果表明，农村劳动力外出务工通过提高农户非农收入和改善整个社会的资源配置效率在收入维度上对农村贫困具有一定减缓作用，但同时，受农村劳动力过量流失的影响，外出务工在农户生活照料及社会保障等多维贫困上并未表现出显著作用，甚至存在一定负面影响。因此，应把握好劳动力外出之度，促进劳动力就近就业，同时加强对农村留守人员的社会保障，以实现多维脱贫、乡村繁荣。     

How and when environmental orientation drives corporate sustainable development in a cross-national buyer–supplier dyad

This study aims at relating the role of environmental orientation to corporate sustainable development within a cross-national buyer–supplier dyad. To this end, it specifically proposes and empirically tests a model delineating how the international buyer's environmental orientation would influence its green supplier development (GSD) activities, then its outsourcing supplier's green product strategies (GPS), and finally total relationship value (TRV) of the entire buyer–supplier dyad. It also examines how supplier overall information technology advancement (SOITA) would further moderate the aforementioned influences. Survey results derived from 202 buyer–supplier dyads have provided empirical support for all the hypothesized relationships of the proposed model. To summarize, the findings show that international buyers' internal and external environmental orientations both serve as a major driver for their GSD, which, in turn, significantly advances outsourcing suppliers' practice of GPS and consequently enhances TRV. Moreover, this study has demonstrated that SOITA exerts a significant and positive moderating effect on the GSD–GPS link. Overall, this study provides important insights into understanding the complex and contingent processes underlying the influence of the international buyer's environmental orientation on the joint performance of the dyad.     

集中连片特困地区扶贫产业发展的规模特征及其经济效率评价——以武陵山片区恩施自治州为例

[目的]在扶贫开发战略中成长起来的特色产业已经成为贫困地区经济发展和农民脱贫致富的支柱产业,特色产业的规模和经济效率直接决定着贫困地区脱贫致富能力。[方法]文章以茶叶、蔬菜代表武陵山片区湖北省恩施自治州扶贫产业,利用集中度指数、扩张弹性系数、单位面积的产值能力和产量能力以及单位产量的产值能力等指标进行扶贫产业发展的规模特征及其经济效率评价。[结果]“十一五”期间以来武陵山片区扶贫产业发展的产业地位逐渐提高、规模扩张优势显著、规模收益递增、投入规模扩张率高于产出规模扩张率、资源配置效率不断提高,比较经济效率差距持续扩大。[结论]扶贫产业亟待根据产业发展的生态化、集聚化和融合化等趋势,在规模扩张中强化特色产品的品质建设和效率优势品种生产专业化程度、提高生产技术水平以及完善产业化组织及其能力建设,提高扶贫产业的经济效率和致富能力。     

Going green,going clean: Lean‐green sustainability strategy and firm growth

Despite the widespread recognition of the paybacks of “going green” and “going clean,” limited research has focused on the impact of lean‐green strategy on firm growth. In this study, we contribute to strategy and environmental sustainability literatures by investigating the possibility that the influence on lean‐green strategy and firm growth is driven by different levels of industry competition, managerial power, and family ties. Using panel data from 732 firms in four major industrialized economies (the United States, Germany, France, and the United Kingdom), we found that lean‐green strategy positively relates to firm growth and this relationship is amplified at higher levels of competition, managerial power, and family ties. Theoretical and practical implications of the study are also discussed.     

Partner‐diversity effects on alliance termination in the early stage of green alliance formation: Empirical evidence from carbon‐emission reduction projects in Latin America

Partner diversity is a key influencer in interorganizational alliances, and several empirical studies have shown that its outcomes are contingent on alliance‐specific factors. We extend this research as well as the growing literature on green alliances, in which partner diversity is uniquely high. Specifically, we examine partner‐diversity effects on alliance termination in the early stage of green alliance formation. We hypothesize that in this context, size disparity increases termination likelihood, whereas organizational variety and cultural separation have the opposite effect. To test our hypotheses, we use a sample of 366 alliance projects located in Latin America and submitted to the Kyoto Protocol's Clean Development Mechanism for evaluation, validation, and registration from 2004 to 2014. Our findings contribute to several research streams and provide practical guidance for successful formation of alliances focused on environmental protection.