数字化情境中的流通效率实现机制——基于匹配与扩张视角的案例研究

当前,快速发展的数字技术深刻影响了流通效率的实现。在数字化情境中探讨流通效率的微观实现机制,需要从流通的时空双重维度出发,将宏观层面的商品流通效率对应为企业在“匹配”和“扩张”的微观流通活动中的效率。采用追踪访谈的一手数据,基于韩都衣舍、酒仙网的案例,探讨了企业在数字化情境中的流通效率实现问题。研究发现：在“去中间化”路径中,数字化驱动了基于供应链整合的匹配效率实现和基于消费社群拓展的扩张效率实现,交叉网络效应与数据网络效应动态放大了这一作用;在“再中间化”路径中,数字化辅助了基于渠道纵向协作的匹配效率实现和基于店面连锁的扩张效率实现,用户网络效应与数据网络效应动态放大了这一作用。因此,承担流通活动的企业需结合自身对于流通渠道演化的路径选择,采取适配的数字化战略,以促进流通效率实现。     

杜诗名词缩略语研究

名词缩略语是杜诗中经常出现的一种别具匠心的言说形式,是对散文句式的一种诗化变异。本文探讨了这一形式的特点及其产生发展过程,对共在杜诗中的表现作了具体研究,指出诗人之所以经常使用这一形式,除了抒情言志的需要外,在艺术上还追求意象的直观和丰美,增大诗句的容量,获得多义模糊的效果。     

论决策分析在经济学和管理学专业教育中的重要作用

本文根据决策分析的学科内容,分析了它对经济与管理活动的指导作用,以及此学科教育对培养21世纪经济学和管理学专业人才的必要性和重要性.文章正视当前存在的问题并对解决的办法进行了探讨.     

朱熹对儒家教育传统的集大成作用

朱熹对儒家教育传统起着集大成作用。他的集大成作用主要表现在：论证了理学教育的理论基础;继承孟子以明人伦为主旨的教育目的论;构建“三纲五常”为“天理”的德育论;提出了格物穷理以致知的教学论思想;遍注群经,辑合并注解《四书》和北宋理学家著作,深刻影响我国南宋以后封建社会后期各级各类学校教学内容。     

Place, Culture, and the Social Amplification of Risk

This article investigates the role of culture in the social production of risks and risk communication surrounding industrial development in a region located at a rural-urban interface. A case study examined a public consultation that was undertaken to inform local residents about an eco-industrial development proposal being planned near Edmonton, Alberta, Canada. The research employed the social amplification of risk framework (SARF) to examine the relationships among culture, place, and socially constructed risk. A total of 44 in-depth, semi-structured interviews were carried out with 33 landowners (farmers, acreage owners), public officials (municipal politicians, administrators), journalists, and industry representatives. Analysis revealed that risk communication occurred in relation to situated experiences of place that were based on conflicting cultural worldviews. The research shows that place is a useful component of the SARF, providing a spatial explanation for why some people amplify, and others attenuate, risks in locally contentious environmental debates.     

Risk,Media, and Stigma at Rocky Flats

Public responses to nuclear technologies are often strongly negative. Events, such as accidents or evidence of unsafe conditions at nuclear facilities, receive extensive and dramatic coverage by the news media. These news stories affect public perceptions of nuclear risks and the geographic areas near nuclear facilities. One result of these perceptions, avoidance behavior, is a form of technological stigma that leads to losses in property values near nuclear facilities. The social amplification of risk is a conceptual framework that attempts to explain how stigma is created through media transmission of information about hazardous places and public perceptions and decisions. This paper examines stigma associated with the U.S. Department of Energy's Rocky Flats facility, a major production plant in the nation's nuclear weapons complex, located near Denver, Colorado. This study, based upon newspaper analyses and a survey of Denver area residents, finds that the social amplification theory provides a reasonable framework for understanding the events and public responses that took place in regard to Rocky Flats during a 6-year period, beginning with an FBI raid of the facility in 1989.     

数字经济下虚拟集聚的现实基础与应用

虚拟集聚是数字经济的产业组织形态,是数字经济下资源重新配置的方式,已经渗入人们经济生活的各个方面,从集聚效应、新动能、新认识、新增长点等维度剖析虚拟集聚的现实基础,研究虚拟集聚对制造业的冲击及其在数字经济下的新应用。研究认为,网络空间的虚拟集聚是以“网”为基础、以“台”为依托、以“云”为支撑、以“端”为条件,虚拟集聚是集聚在数字经济下的演进,是在网络空间的集聚,具有智能物流、交易费用、空间范围、信息匹配、知识溢出、弱化黑洞、资源配置等集聚效应; 新一轮科技革命、产业变革与中国制造强国梦形成历史性交汇,促使虚拟集聚应运而生,并且成为新一代信息技术与制造业深度融合的新动能,能够显著促进产业数字化和数字产业化,带动传统产业集群转型升级,培育出世界级的先进制造业集群,推动中国制造迈向全球产业链价值链顶端; 虚拟集聚下制造业的关键核心是互联,在应用中需要产业数字化和数字产业化相辅相成,需要技术的支撑,表现为高度自动化、高度信息化和高度网络化,横向集成、纵向集成与端到端的集成,虚拟集聚的生产要素和生产力都是在虚拟空间体现,将推动制造业数字化转型、网络化协调、智能化变革; 随着新冠肺炎疫情全球蔓延,虚拟集聚成为新经济增长点,国际供应链中的虚拟集聚显著增长,跨境电商兴起,外贸行业快速数字化发展,教育行业、学术会议借助网络和软件线上进行,线上办公、云端会展快速流行,网络与快递业、餐饮与外卖业、短视频与直播经济、云医疗与大健康迅猛发展,数字阅读、文娱产业线上流行成为新的生活方式,元宇宙的虚拟世界也将推动科技发展带来经济新增长点。     

关于郑州中心城市辐射作用的思考

针对我国社会经济发展不平衡状况,区域经济发展应选择中心城市辐射与梯度推进相结合,并以中心城市辐射为主的发展战略.河南及中西部社会经济的发展需要中心城市带动,郑州有成为"龙头"城市的基础得天独厚的区位、交通、资源等优势,经济实力较强,西部大开发为其提供了发展良机.增强郑州中心城市辐射作用,要有新的战略构想框架,争取在10～20年的时间内,确立国家区域中心城市地位.为此,郑州需在制度创新、城市空间布局和产业结构布局、对外开放及发展科教事业等方面加快发展,使其向周边地区的辐射不断增强.     

新疆妇女就业水平分析与建议

本文对改革开放以来新疆妇女就业状况进行了阐述,并分析了当前影响新疆妇女就业的主要因素,进而提出了相关建议。     

The Method to Identify a Biomarker and to Evaluate Its Efficiency for Survival by Using the Joint Model of the Accelerate Failure Time and Longitudinal Data

In this article, we discuss how to identify longitudinal biomarkers in survival analysis under the accelerated failure time model and also discuss the effectiveness of biomarkers under the accelerated failure time model. Two methods proposed by Shcemper et al. are deployed to measure the efficacy of biomarkers. We use simulations to explore how the factors can influence the power of a score test to detect the association of a longitudinal biomarker and the survival time. These factors include the functional form of the random effects from the longitudinal biomarkers, in the different number of individuals, and time points per individual. The simulations are used to explore how the number of individuals, the number of time points per individual influence the effectiveness of the biomarker to predict survival at the given endpoint under the accelerated failure time model. We illustrate our methods using a prothrombin index as a predictor of survival in liver cirrhosis patients.