长江经济带农业绿色生产效率及其时空分异特征研究

［目的］从静态分析和动态分析两个方面，阐释长江经济带农业绿色生产效率和农业绿色全要素生产率的时空分异特征以及生产率增长来源，以期为提高长江经济带农业绿色发展质量提供科学决策依据。［方法］文章基于资源环境约束的角度，利用MinDS模型和Global Malmquist Luenberger指数相结合的方法，测算长江经济带农业绿色生产效率和农业绿色全要素生产率，并将农业全要素生产率变化分解为纯技术效率变化（PEC）、纯技术变化（PTC）、规模效率变化（SEEC）和规模技术变化（SETC）4个部分。［结果］（1）长江经济带农业绿色生产效率水平较高，且呈不断增长趋势，下游地区的农业绿色生产效率高于中、上游，且中、上游与下游地区的差距不断拉大； （2）长江经济带农业绿色全要素生产率增长较快，以3年为1个周期，呈现波动式上升趋势，其增长主要源于纯技术进步和规模技术提高； （3）长江经济带下游农业绿色全要素生产率增长率最高，上游次之，中游最低，其中，下游农业绿色全要素生产率增长主要源于纯技术进步，中游是纯技术效率改进、纯技术进步和规模技术提高共同作用的结果，上游则源于纯技术效率改进、纯技术进步和规模效率提高。［结论］长江经济带上、中、下游三大区域的农业绿色发展水平和发展能力存在较大差异，需制定差异化政策，以调整农业增长模式，促进农业转型升级，实现高质量发展。     

Internal green integration and environmental performance: The predictive power of proactive environmental strategy,greening the supplier,and environmental collaboration with the supplier

The effect of proactive environmental strategies (PES) on corporate performance has been debated extensively among academics; however, the significance of the pathway of those strategies—internal green integration (IGI) through greening the supplier (GTS) and environmental collaboration with suppliers (ECS)—remains undecided. This study examines environmental performance (EP) through GTS, IGI, and ECS. It also examines the direct link between PES and IGI. A conceptual framework was designed following a rigorous review of the literature. A survey questionnaire was used to collect cross-sectional data from a random sample of manufacturing firms, obtaining 196 usable samples. Using AMOS, the structural equal modeling found a positive and significant impact of PES on IGI. Significant predictors of EP were GTS, IGI, and ECS. The findings of the study can provide managers with guidelines for dealing with business and environmental concerns. They can also contribute to creating strategies for environmental protection and management and reducing adverse effects on the environment. Finally, by examining the direct links between GTS, ECS, and EP, particularly in a developing context, the study may contribute to the literature of environmental policy.     

黄浦江两岸地区公共空间可达性研究 ——基于社会网络分析的公共交通评价与 优化策略

黄浦江两岸地区正在打造世界级的滨江公共空间， 如何便捷、多样地抵达滨江公共空间是其规划设计和建设实施 的重要评价指标。将该评价指标定义为滨江公共空间可达性， 指居民利用滨江公共交通系统(常规公交)抵达滨江公共空间的 便捷性和多样性程度。利用社会网络分析方法，以虹口区和徐 汇区的滨江公共空间为例，构建了滨江公共空间可达性模型， 借助地理信息系统(ArcGIS)与计算机编程语言(Python)对现 状可达性进行量化分析评价，并提出优化滨江公共空间可达性 的算法和策略，以期更好地提升滨江公共空间可达性。     

乡村振兴背景下浙江省绿色农业发展评价研究*——基于农业资源综合利用的视角

［目的］在系统梳理浙江省绿色农业发展进程基础上，文章从农业资源综合利用的视角，基于经济社会发展、资源减量投入、资源循环利用和资源环境安全4个维度构建绿色农业综合评价指标体系，并评价浙江省绿色农业发展水平。［方法］借鉴BPEIR概念模型构建浙江绿色农业生产系统概念模型和评价指标体系，采用灰色关联分析法并结合宏观统计数据，从动态视角评价了2002—2016年浙江省绿色农业发展状况，并静态比较2015年浙江省11个地级市农业绿色发展的基本状况。［结果］浙江省绿色农业资源综合利用指数呈波动上升趋势，在不同的发展阶段，农业资源综合利用指数也呈现出规律性变化； 浙北地区绿色农业资源综合利用指数明显高于浙南地区； 杭州、嘉兴、宁波位居前三，金华市绿色农业资源综合利用指数最低。［结论］浙江绿色农业发展水平呈不断上升趋势，不同地区差异明显； 实行差异发展、完善政策体系、提高质量品牌、强化科技支撑是推进浙江农业绿色发展的关键。     

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。     

全空域球面相控阵波束形成器的优化设计

针对目前全空域球面相控阵测控系统工程应用中波束数量、信号瞬时带宽等数字波束形成器性能和复杂度难以兼顾的问题，分析了常规波束形成方法在基于半球形结构的S频段大型共形天线阵列工程应用中的局限，给出了一种基于子阵划分的宽带数字波束形成器优化设计方法，通过优化幅相和时延补偿方式，使算法不受子阵尺寸限制，工程实现复杂度较低。系统建模和仿真验证表明该方法可以获得良好的瞬时带宽性能，具有较好的工程应用价值。     

相关信噪比对天线组阵相位估计性能的影响

传统天线组阵理论为了简化分析，均假设反正切相位鉴别器是一种最大似然估计器，其估计方差能够达到克拉美-罗下界。然而当相关信噪比在中等值以下时，这一假设条件不再适用。为此，分析了相关信噪比对相位估计性能的影响。针对传统天线组阵合成性能分析方法在描述低相关信噪比条件下相位估计性能方面存在的问题，通过引入修正因子，得到了相位估计方差的理论公式，实现了对低相关信噪比条件下相位估计性能的准确描述。     

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.     

Mapping Brisbane’s Casual Creative Corridor: Land use and policy implications of a new genre in urban creative ecosystems

Creative hotspots have become a key driver for urban policies to stimulate social, cultural, environmental and organisational growth of creative and knowledge-based clusters, districts and hubs. However, their functional and spatial characteristics vary due to their different evolving structure as new spaces of economic activity in different contexts. This article points to a consideration of new foci for both land use and urban economic policy through a mapping of formal and informal creative hotspots in Brisbane, Australia. The study found two distinctive development patterns: (a) earlier top-down approaches as instigated by national and international innovation policies, and; (b) recently emerging bottom-up spaces for creativity, knowledge and innovation practices. This study examines how formal creative strategies and emerging informal creative spaces shape cities and urban policies. The methodology comprises online data collection and a review of creative and knowledge strategies and implementation policies. Data was then analysed via multiple mapping techniques illustrating the spatial distribution of creative hotspots, formal and informal formations, scale and land use characteristics. The research findings consolidate our understanding of Brisbane’s creative ecosystem and suggest new urban policy mechanisms to better foster the interrelationship between top-down and bottom-up approaches in cities, that is, between formally planned and large-scale interventions and small-scale organic and informal creative activities.     

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.