关于卷制螺旋滚子结构尺寸的理论分析

卷制螺旋滚子是一种全新理念的滚子,可以有效地识别出螺旋滚子结构尺寸与变形能之间的相互关系,该滚子的周身遍布缝隙,其区别于普通滚子的一个最大特点就是可以吸收冲击能,既解决普通滚子在高速多冲作用下的早期断裂问题,又提高滚子的抗冲击性能。为此,文章主要针对有关于卷制螺旋滚子结构尺寸的理论,进行简单的分析和探讨。     

探析汽车企业如何在全球范围内合理化供应链的理论基础

借鉴供应链管理中的系统思想、需求驱动思想、合作共赢思想、同步运作与动态重构思想,分析研究汽车企业在全球范围内合理化供应链的理论基础:供应链作为一个具有特定功能的有机整体,是基于一定的市场需求而产生和变化的;用户的需求及其变化是企业合理化供应链和供应链动态可重构的驱动源;供应链各成员企业之间基于"竞争-合作-协调"机制,以分布式企业集成合作、协调同步运作为保证,在价值增值链上达到共赢的目标。     

人力资本概念产生的分析

人力资本概念自从20世纪60年代由西奥多.舒尔茨正式提出以来,在经济学界受到了广泛的关注。按照英国著名经济思想史学家马克.布劳格的说法,"在鲍曼确切地把人力资本的概念的提出称为20世纪60年代的‘经济思想上的人力投资革命’以前,把在诸如保健和教育这样的社会服务上的支出当作与在物质资本上的投资一样的投资,是一件非同寻常的事情。"人力资本概念的提出无可厚非是观念上的创新与突破,但是在面对这种创新与突破的同时,许多的学者似乎误入歧途,仅仅对人力资本的概念做表面上的理解,脱离了它产生的社会背景、技术背景和理论背景。许多人置资本的内在规定性于不顾,牵强地对人力资本下定义。在这样的视角下,不仅工业时代有人力资本,就连远古时期也存在人力资本。文章希望通过从人力资本概念产生的角度分析人力资本概念的内涵,从而真正解释什么才真正属于人力资本的范畴。     

我国大众体育消费:理论探源、制约因素与实施策略

全面激励大众消费是构建以国内大循环为主体、国内国际双循环新发展格局的内在驱动力。本文采用理论分析、逻辑分析方法对当前大众体育消费的理论基础及制约因素进行研究。研究表明:当前,我国体育产品或服务供给力不足、体育消费税制体系激励缺位、微观主体税负沉重、政府调控政策落实不到位等制约了大众体育消费。激励大众体育消费不仅需要政府规制和宏观调控政策的激励,而且需要提升市场机制对体育消费的资源配置作用,实施科技+体育和互联网+体育深度融合,完善财税激励政策,大力培育体育消费市场,扩大体育消费人群规模,达到助推体育消费高质量发展的政策激励调控目标。     

深化学科认知与构建中国特色社会主义政治经济学理论体系

对学科的认知包括认识学科内涵、学科性质与任务、学科发展进路等核心问题,关系到如何构建学科体系,是学科建设的重要内容.从深化学科认知的视角,中国特色社会主义政治经济学的学科发展与理论体系构建,要坚持几个重大原则,包括把中国特色社会主义政治经济学建立在历史唯物主义的基础之上;要以生产关系分析为核心来构建中国特色社会主义政治...     

Time-varying parameters in the almost ideal demand system and the Rotterdam model: will the best specification please stand up?

This article assesses the ability of the Rotterdam Model (RM) and of three versions of the Almost Ideal Demand System (AIDS) to recover the time-varying elasticities of a true demand system and to satisfy theoretical regularity. Using Monte Carlo simulations, we find that the RM performs better than the linear-approximate AIDS at recovering the signs of all the time-varying elasticities. More importantly, the RM has the ability to track the paths of time-varying income elasticities, even when the true values are very high. The linear-approximate AIDS, not only performs poorly at recovering the time-varying elasticities but also badly approximates the nonlinear AIDS.     

Problematizing socioemotional wealth in family firms: a systems-theoretical reframing

The concept of socioemotional wealth (SEW) seeks to present an independent paradigmatic basis for family-firm research, and in doing so aims to establish a sound basis for the scientific legitimacy of family-firm research. Establishing that legitimacy requires scholars to demonstrate that SEW is based on coherent assumptions on several theoretical levels. This paper uses the problematization methodology to challenge the coherence of the theoretical assumptions underpinning SEW and to advance theory development. The results of this problematization show that SEW is built on a theoretical level close to the object of research (in-house assumptions), but that more deeply-rooted theoretical levels (e.g. paradigmatic assumptions) are not sufficiently elaborated. Moreover, the original conceptualization is based on a positivist-mechanistic view, which hinders SEW reflecting the complex reality of family firms. Based on the results of this problematization, new systems theory is applied to reframe SEW’s theoretical grounding. Thereby the main contribution of the paper is a critical reflection on the theoretical underpinnings of SEW (in particular root-metaphor and paradigmatic assumptions), serving as the basis for advancing a coherent theoretical understanding of this important concept in family business research.     

A 3D theoretical model for green management：a case study of Chinese enterprises

Companies that not only abide by environmental regulations, but also discover new techniques and adopt newmanagement methods to reduce negative environmental impacts often have positive effects on corporate profitability. Inorder to meet the needs of sustainability of enterprises and protect environment, the concept of green management isdeveloped and regarded as an important direction of management theory of the 21st century. Though there are manytheories and practices about green management in western countries, they are built based on the developed marketeconomy, which are not suitable for Chinese enterprises absolutely. By analyzing the viewpoints and models of theoverseas and domestic experts and scholars, combining characteristic of China＇s market economy, this paper points outthe real connotation of enterprise green management - the combination of ecological harmony （harmony between humanand nature） with human harmony （harmony among people）, establishes a 3D theoretical model, points out the defects ofenterprise＇s green management in China, reanalyzes and redesigned enterprise green management, which paves the wayfor the deeper and broader development of green management.     

我国农作物秸秆资源化利用的经济分析:一个理论框架

农作物秸秆是生物质资源的主要来源之一,与之相关的技术开发目前已成为生态农业和可持续发展的一个重大课题。农作物秸秆资源化利用有肥料、燃料、饲料、工业原料和食用菌基料等多种途径和技术路径,这些利用方式和技术的经济可行性如何,引起了研究者越来越多的关注。文章提供了一个对我国农作物秸秆资源化利用行为进行经济分析的理论框架。在该框架中,农作物秸秆资源化利用的总收益包括秸秆产品的市场价值、秸秆资源使用节约的相关资源性产品价值以及秸秆产品使用产生的环境收益;农作物秸秆资源化利用的总成本则由秸秆的收集、运输、储藏、加工以及机会成本构成。最后,文章对农作物秸秆资源化利用的公共政策等问题进行讨论。     

我国财务理论研究的特征、现状和方向

财务学科将会向多个领域综合交叉发展。财务学将与各门类科学、各层次分支学科不断交叉,同时又加速综合;自然科学,尤其是数学科学的不断应用,将使财务学科理论高度数学化、定量化;财务学与相关技术将形成共生关系,协同发展;财务学将进一步国际化,以至形成一个国际财务学科群体。