循环农业产业链的运行规律及动力机制研究

以循环农业模式体系构成研究为切入点,首先系统地阐述了循环农业产业链的内涵及空间结构,总结循环农业产业链的三种网络形式及特征;其次,探寻纵向闭合产业链条内的产业关联及链条结构,提出了循环农业产业链由外循环及内循环两条物质循环路径流程构成;再次,结合国内相关研究成果,以及循环农业体系产业创新与价值增值的特点,提出推动循环农业产业链的动力机制包括:以价格机制、竞争机制为核心的内源动力机制,以及以政策制度、技术创新、市场建设、人才培养为重点的外源动力机制。     

转变煤炭产业经济发展新模式的思考

我国是能源消费大国,＂富煤贫油少气＂是我国能源资源分布的突出特点。当前,我国煤炭资源利用以直接燃烧和传统煤化工为主,能源转化效率和资源综合利用水平极低,环境污染较大。过度依赖于能源的煤炭产业结构和经济发展方式,导致煤炭产业初级化、重型化、单一化问题突出。因此,实现绿色采矿、发展循环经济、开展煤炭深加工、提高煤炭资源就地转化水平等一系列转变煤炭产业经济的新发展模式,已成为实现我国经济发展方式转变、实现资源型国家可持续发展的最现实有效的选择。     

一种直角坐标系下机动目标匀加速圆周运动新模型

针对机动目标跟踪过程中运动模型分散繁杂的缺点,提出一种能 描述多种运动形式的匀加速圆周运动模型。首先,给出了匀速圆周运动目标的状态向量描述 。在此基础上,针对匀加速圆周运动的特点,建立了直角坐标下目标速度模型。通过巧妙利 用微积分方法,推导出匀加速圆周运动的位置和加速度模型。最后,通过数学证明和仿真实 验,验证了该运动模型的有效性。     

基于AHP-FCE的氯碱化工园区循环经济评价研究

结合氯碱化工园区的实际情况,建立了氯碱化工园区循环经济评价指标体系,运用层次分析法(analytical hierarchy process,AHP)确定了指标体系中各指标的权重,运用模糊综合评判(fuzzy com prehensive evaluation,FCE)理论,建立了氯碱化工园区循环经济综合评价模型,并将这一模型应用于某氯碱化工园区循环经济的综合评价。实例表明:模糊综合评价方法可操作性强,可在氯碱化工园区循环经济综合评价中广泛应用。     

煤矸石综合利用投入产出模型

基于循环经济理论,分析了在煤矸石综合开发中以能源产业为主导的纵向延伸、横向拓展的生态产业链,归纳了以煤矸石发电为核心的资源循环利用过程的6个关键环节,并以此为基础构建了煤矸石综合利用投入产出模型,论述了产业链中各部门存在的平衡关系以及直接消耗系数和完全消耗系数的计算过程,为定量分析与理解煤矸石综合利用产业链中存在的关系、合理安排产业布局、科学治理产业链提供了一种有效的工具。     

浅谈推动中国循环经济发展

发展循环经济是可持续发展的必由之路,这既符合国情,又能实现环境与自愿对经济建设的持续支撑。本文阐述了如何根据循环经济"3R"原则的科学顺序推进循环经济在我国的科学发展。     

四川省九环线北端生态旅游整合开发的构思

根据四川省九环线北端生态旅游资源的有利条件,提出打造精品工程化线路整合开发的构思,其中包括深化开发的意义,当前存在的问题,整合开发的理念,工程化线路的系统设计及各项旅游的要求内容,并提出可持续发展对策．为本区的进一步发展指明了可行并可操作的方向和举措。     

Systemic circular business model application at the company,supply chain and society levels—A view into circular economy native and adopter companies

This study contributes to the conceptualization of a sustainable circular business model (CBM), the application of the circular economy (CE) by companies. The study utilized a three-level framework adapted from the CE literature with company (micro), supply chain (meso) and society (macro) levels. This multiple-case study in the textile industry included two types of companies operating in the CE: companies founded on the sustainable principles of a CE (natives) and companies transitioning to a CE from the linear economy (adopters). The findings show that the adopters emphasized long-term economic sustainability on a company level and implemented CE elements to varying degrees on all three levels. The natives pursued business decisions from environmental and social sustainability standpoints, and the three levels were integral in their systemic approach to a CE. The study highlights two key claims: established operational structures and economic volition hindered adopters in their systemic CE implementation, and an integral part of the CBM for natives was a proactive approach towards the society level.     

Future perspectives on the role of extended producer responsibility within a circular economy: A Delphi study using the case of the Netherlands

Extended producer responsibility (EPR) is a proposed policy approach to promoting the circular economy (CE) within the European Union. This research used a policy Delphi to explore perspectives on improving EPR policies to further contribute to the CE goals of the Netherlands. Both the potential improvement and critical reflections discussed by CE and EPR experts and practitioners from this study contribute to a more detailed understanding of the future governance of CE practices. We present various activities to improve EPR and insights from Delphi participants that emerged from the study. This paper shows that whilst actors agree, in essence, that there is a need for modifying EPR, what the specific changes to the form are and to whom the new responsibilities apply is contested.     

Circular business model implementation: A capability development case study from the manufacturing industry

Circular business models (CBMs) have huge potential to deliver economic, social, and environmental benefits, but CBMs have yet to be implemented widely in industrial settings. One reason is that they are often presented as one-size-fits-all solutions, but this is misplaced because product-specific criteria and company capabilities determine the correct choice and implementation of CBMs. Therefore, the purpose of this paper is to investigate how CBM selection and capability development facilitates the implementation of CBMs. For this purpose, we have adopted a qualitative research approach and undertaken 25 explorative interviews in three large Swedish manufacturing companies. In this paper, a CBM implementation framework consisting of two parts has been developed. The first part addresses the choice of the appropriate CBM based on tactical configurations. The second part provides a capability development path by explicating underlying routines that need to be progressively developed in order to move smoothly to more advanced CBMs.