我国铁路开行高速行邮专列技术及经济可行性探讨

首先对国内外行包运输产品进行综述,分析了我国开行高速行邮专列的可能性,并对其技术及经济可行性进行了探讨分析,最后得出我国开行高速行邮专列是可行的结论。     

Information Losses in a Dynamic Model of Credit

This paper examines dynamic information losses associated with loan terminations. We assume that the aggregated returns of current borrowers contain information about the mean returns to future borrowers. In a competitive loan market, the value of this information is not fully internalized by individual borrowers and lenders, and loan decisions fail to be first best. Introducing heterogeneous borrowers, who know their own risk characteristics better than lenders, safer borrowers are less willing to borrow when risk premia rise. As they cease borrowing, the information generated in credit markets becomes noisier and this tends to increase risk premia. The model produces alternating and persistent periods of “tight” and “loose” credit.     

公务员认知对政府绩效评价监督模式的影响

政府绩效评价的监管是发挥政府绩效评价实际效果的重要一环,监督能够保证政府绩效评价可持续性.从理论上研究监管过程的模式并将其与多发主体参与能够达到的激励效果有机结合起来,有助于促动政府绩效管理回路的闭合与完善.文章从“三权”视角出发,构建三权框架下的政府绩效评价监督模式,并指出每一种模式存在的潜在激励效果,并通过实际访谈中的数据来研究现阶段政府内部人员的认知会如何影响监督模式的生成.     

Reproducibility in Accounting Research: Views of the Research Community

We have little knowledge about the prevalence of irreproducibility in the accounting literature. To narrow this gap, we conducted a survey among the participants of the 2019 JAR Conference on their perceptions of the frequency, causes, and consequences of irreproducible research published in accounting journals. A majority of respondents believe that irreproducibility is common in the literature, constitutes a major problem, and receives too little attention. Most have encountered irreproducibility in the work of others (although not in their own work) but chose not to pursue their failed reproduction attempts to publication. Respondents believe irreproducibility results chiefly from career or publication incentives as well as from selective reporting of results. They also believe that practices like sharing code and data combined with stronger incentives to replicate the work of others would enhance reproducibility. The views of accounting researchers are remarkably similar to those expressed in a survey by the scientific journal Nature. We conclude by discussing the implications of our findings and provide several potential paths forward for the accounting research community.     

何为生态正义——基于马克思主义哲学的思考

生态正义不是人与自然物之间的关系，亦不是以一切环境因素为中介的人与人之间的环境正义，而是以生态环境因素特别是以生态资源为中介的人与人之间的生产关系正义。在资本主义生产关系弊端日益凸显的今天，现时代的生态正义是一种生产资料公有制的生产关系；是一种能够保障劳动者在生产过程中享有平等地位，获得平等尊重的生产关系；是一种能够保障劳动者付出与回报对等的生产关系。伴随着社会物质生产力的进一步发展，以及政治、法律、思想观念等政治上层建筑和思想上层建筑的影响，生态正义表现出相对性和可变性、动态性和过程性，以及多样性等基本特征。     

改进的层次分析法对电阻率两种反演效果的评价

本文介绍了一些反演方法及国内开发的反演软件,并通过定量评价分析反演效果。对地电模型及实际情况,用两种反演方法进行反演解释,并用改进的层次分析法定量的评价两种反演效果。最后总结出了,结合地质资料,如何选取反演方法,才能正确的解释。     

Understanding Systematic Risk: A High-Frequency Approach

Based on a novel high-frequency data set for a large number of firms, I estimate the time-varying latent continuous and jump factors that explain individual stock returns. The factors are estimated using principal component analysis applied to a local volatility and jump covariance matrix. I find four stable continuous systematic factors, which can be well approximated by a market, oil, finance, and electricity portfolio, while there is only one stable jump market factor. The exposure of stocks to these risk factors and their explained variation is time-varying. The four continuous factors carry an intraday risk premium that reverses overnight.     

基于渠道权力视角的食品安全问题研究——以乳制品行业为例

食品安全问题是目前世界各国面临的共同难题,无论是政府层面还是学术界都对食品安全问题给予了广泛关注。以乳制品行业为例,基于渠道权利视角探寻食品安全问题产生的深层次原因,并通过对原奶流通渠道以及渠道中各行为主体的权力结构进行分析,可以看到原奶流通渠道各行为主体间的关系及外部因素可能引起渠道中各行为主体的行为变化,由此得出各种渠道权力分配状态的控制与被控制行为的假设推理,即食品安全增值的分配对各渠道成员的激励＂多享有会主动些,少享有会被动些,不享有会投机,谁会得到食品安全的增值,谁就会主动控制食品安全,而享受增值的多少取决于谁在权力结构中占据主导地位＂。     

浙江省旅游景区的转型升级研究

旅游景区是区域旅游产业发展的核心载体,是将旅游业培育成＂国民经济的战略性支柱产业和人民群众更加满意的现代服务业＂的主阵地。以浙江省为例,通过对浙江省旅游景区调查数据的剖析以明确其存在的问题与不足,指出旅游景区转型升级的必要性、内涵任务及面临难题,并分别从政府、企业等两个层面提出相应的对策与措施,为国内旅游景区的转型升级与可持续发展提供参考。     

我国铁路阔大货物装载加固研究综述

基于20世纪90年代以来发表的铁路阔大货物装载加固相关文献,并结合铁路相关规章标准,分析近20年来我国阔大货物装载加固的总体研究历程和现状,指出其理论、技术与方案制定评价的研究进展,并进一步分析铁路阔大货物装载加固研究之间的关系,最后指出阔大货物装载加固的研究趋势要从动力学软件的应用、装载加固相关系统的开发、与运输组织相结合等方面发展。