数字经济发展对中国绿色生态效率的影响研究——基于双向固定效应模型

实现数字经济与城市生态韧性协调发展是推动城镇化高质量发展与美丽城市建设的有效路径之一。在构建数字经济与城市生态韧性评估指标体系的基础上,运用熵权法、TOPSIS模型、耦合协调模型与PLSR模型,对2012—2021年珠三角地区各城市数字经济发展、城市生态韧性的时空动态特征及其耦合协调与影响关系进行实证研究。结果表明：（1）珠三角地区各城市数字经济发展经历了缓慢发展期和蓬勃发展期两个阶段,政策引领是数字经济发展的主要推动力,各城市数字经济发展水平呈现“梯队式”发展趋势。（2）珠三角地区各城市生态韧性水平在空间上呈现“中心高周边低”的特征,广州、深圳与东莞的城市生态韧性水平高于其他城市。（3）珠三角地区数字经济发展对城市生态韧性提升具有显著的赋能作用,并且数字经济发展对不同城市的赋能效应具有显著差异,数字基础设施、数字产业化是推动珠三角地区城市生态韧性提升的最主要因素。（4）珠三角地区各城市数字经济与城市生态韧性的耦合协调程度呈现“两超一强多弱”状态,仅广州、深圳两城处于高度耦合协调阶段。基于上述研究结论,文章提出未来珠三角地区需要坚持政策引领,着力推动二三线城市数字经济的发展;发挥生态优势,巩固发展各城市的特色生态产业;重视中心城市的引领作用,助推周边城市数字经济与生态环境协调发展。

     

传统实体产品创新设计为数字产品的实现机理案例研究

现有数字产品创新的研究多关注数字原生型产品创新,然而各类数字技术的蓬勃发展为传统制造企业将传统实体产品创新设计为数字产品提供了条件和可能。基于海尔智家的探索性单案例研究,深入剖析将传统实体产品创新设计为数字产品的实现机理。研究发现：(1)传统实体产品创新设计为数字产品经历“研判新兴数字产品设计趋势-创造数字产品-塑造市场对数字产品的认识”三个阶段。企业通过推动数实关联,发挥数字赋能作用,支持传统实体产品数字重构。(2)传统实体产品创新设计为数字产品的本质是产品框架发生数字重构,体现为“框架涌现-框架融合-框架给赋”的作用过程。(3)数字技术在传统实体产品创新设计过程中,分别扮演环境、组件、象征的角色以支持重新审视、重新设计、重新定义的作用发挥。研究贡献于新兴数字产品创新领域的理论议题,对指导传统实体企业构建数字产品优势提供实践启示。     

Social Innovation in an Interconnected World: Introduction to the Special Issue

This introduction provides an overview of the special issue and identifies the need for continued work in the area of social innovation, which seeks to create social value and progress and engages multiple stakeholders. Our special issue highlights various levels and stakeholders involved in the process and outcomes of social innovation. While mainstream innovation, which has been traditionally driven by profit maximization motivations, tends to create winners and losers, social innovation that focuses on redistribution of knowledge, discovery, and cocreation changes the key assumptions and logics of the conventional innovation theory. This introduction first briefly outlines current social innovation literature, presents the contributions created in this special issue, and concludes with the identification of three priorities (or needs) for social innovation researchers.     

中原生态经济区的建设与规划分析

中原生态经济区强调同时实现环境、经济、社会效益,侧重相互合作与整体利益,突出资源的节约共用与可持续发展,是工业系统、交换系统、社会网络、文化氛围的营造以及各种基础设施的物质空间建设,其健康运行需要区域经济发展、综合治理、循环经济发展、生态工业网络的政策支持。     

农产品冷链物法流浅析

1 农产品冷链物流的概念、主要内容及特点 1.1 农产品冷链物流的概念 冷链物流(cold Chain Logistics),也叫低温物流(Low-temperature Logistics),是一种特殊物流形式,其主要对象是易腐食品(包括原料及产品),所以国外普遍称其为易腐食品冷藏链(Perishable Food Cold Chain).     

Additive hazards regression of failure time data with covariate measurement errors

This paper discusses regression analysis of failure time data under the additive hazards model, with covariates subject to measurement errors. In particular, we consider the situation where there may exist only repeated measurements or observations on the covariates with measurement errors, and for which there does not exist any method for inference. A nonparametric-correction approach is proposed for inference about regression parameters and the baseline cumulative hazards function. Both asymptotic and finite sample properties of the proposed estimators are established and the approach is applied to an AIDS clinical trial that motivated this study.     

贯彻新《公司法》推进铁路企业改革

针对最新修订的<公司法>,着重介绍和分析了注册资本、自主权、中小股东保护、经营者责任追究机制、平等法律地位等内容,提出铁路贯彻新<公司法>的若干构想.     

Parkistan Province Governor: Travel to China with Ample Fruits

Good Impression with Jiangsu "I came to Jiangsu province on the invitation of Governor. During my stay in Jiangsu province, in Shanghai, and also two days in Beijing, I had very fruitful negotiations with the government officials, with industry leaders, and business leaders. It will help us enhance the already very stable relationship between the two countries and economic affairs,"Mr. Khalid said.     

East Man：A Chinese Brand of Independent Innovation

As a kind of building material, lacquer is very necessarily used in the room fitment. In order to protect the indoor environment and avoid the emission of poisonous gas, people always choose those high-quality imported lacquer despite the high price. However, a new Chinese brand lacquer has been produced, it's called East Man. This is an independent Chinese innovated brand. Quite different from the other kinds of lacquer, it has three major unique healthy functions: killing the bacteria, purifying the air and increasing the oxygen.     

萧灼基论构建和谐社会十大关系--访著名经济学家萧灼基

记者:党的十六届四中全会提出建设社会主义和谐社会的新命题.并明确指出,构建社会主义和谐社会,是巩固执政党的社会基础,是实现执政党的历史任务的必然要求.萧教授,您对这个问题很有研究,您可以谈谈对这个问题的看法吗?