直播带货模式下消费者网购生鲜水果的影响因素研究

近年来,直播带货的出现为消费者带来了一种全新的网络购物方式。特别是在新冠疫情防控期间,越来越多的消费者参与到直播带货中,进一步促进了该模式的迅速发展。本文以刺激—机体—反应(S-O-R)模型理论为基础,构建直播带货模式下消费者网购生鲜水果的影响因素模型,探寻其作用机理,研究结论和建议供参与直播电商的各方参考。     

基于心理账户和后悔理论的报童问题研究

考虑到零售商存货后悔和缺货后悔的心理效用,文章将心理账户理论和后悔理论纳入报童模型,建立了报童的随机后悔效用函数,证明了期望后悔效用函数的凹性,以及最优购量满足的最优性条件。同时解析地进行了存货后悔和缺货后悔决策权重系数的比较静态分析。结果发现:其最优订购量随存货后悔权重系数增加而减少,随缺货后悔权重系数增加而增加。最后,数值验证了存货后悔和缺货后悔对最优订购量的影响。     

危险品网络化信息管理与服务系统探讨

从危险品行业监管现状出发,针对物流网络在途和在库两种情况,研究了货运站从接单、运输组织、库存管理整个业务流程,分析了行业管理机构、运输企业、社会公众等服务对象的应用需求,在此基础上探讨了交通运输行业危险品网络化管理系统总体结构,提出了业务管理、实时监管、安全辅助管理、用户网上服务管理等4大功能模块,对系统所涉及的管理模式、异构系统信息集成共享技术、危险品监管技术、可扩展性及相关建设标准等关键技术进行了初步研究。     

从经济属性的角度分析公路收费中存在的问题

公路在国民经济的发展中,发挥着非常重要的作用,一般来说交通越发达,公路网越密集的地区,经济发展水平越高。本文从公路收费的经济属性角度出发,以收费水平、收费期限、收费标准等为具体切入点,详细论述了我国公路收费在这方面出现的基本问题,并针对这些具体问题,提出了相应的解决对策,希望可以对当前我国收费公路的管理运营,提供一些有益的思考。     

南和兴业路综合管廊设计

为了有利于集约化利用城市地下空间,避免和减少城市地面、路面的重复开挖,将各种市政管线共同置于管廊内。文中简要介绍了南和兴业路综合管廊设计。     

High-capacity vehicles: an investigation of their potential environmental,economic and practical impact if introduced to UK roads

In the UK, the length of a goods carrying vehicle is limited to a maximum of 16.5 m for a standard articulated vehicle and 18.75 m for a draw-bar combination. This research has investigated the environmental, economic and practical impacts of expanding the volumetric carry capacity by increasing maximum length of vehicles to 25.25 m, while maintaining the maximum gross weight at the current UK limit of 44 tonne. The scope is limited to the consideration of 25.25 m vehicle variants that are currently in use in the Netherlands. The investigation was based on a variety of techniques that included bench research and case study modelling. It concludes that, although the picture is complex and there are a number of operational issues to be addressed, the introduction of high-capacity vehicles (HCVs) to the UK would yield valuable environmental and financial benefits at vehicle and operator level, provided that vehicle utilisation levels do not deteriorate as compared with current fleet. At the national level, financial benefits would be partially offset by infrastructure costs and there is some risk of environmental benefits being partially eroded by modal shift – but on both measures a net benefit is highly likely to remain. In addition, provided that appropriate risk control measures are adopted, use of HCVs is highly unlikely to have an adverse impact on road safety.     

The first-order approach when the cost of effort is money

We provide sufficient conditions for the first-order approach in the principal-agent problem when the agent’s utility has the nonseparable form u(y−c(a))$u(y-c\left(a\right))$ where y$y$ is the contractual payoff and c(a)$c\left(a\right)$ is the money cost of effort. We first consider a decision-maker facing prospects which cost c(a)$c\left(a\right)$ and with distributions of returns y$y$ that depend on a$a$. The decision problem is shown to be concave if the primitive of the cdf of returns is jointly convex in a$a$ and y$y$, a condition we call Concavity of the Cumulative Quantile (CCQ) and which is satisfied by many common distributions. Next we apply CCQ to the distribution of outcomes (or their likelihood-ratio transforms) in the principal-agent problem and derive restrictions on the utility function that validate the first-order approach. We also discuss another condition, log-convexity of the distribution, and show that it allows binding limited liability constraints, which CCQ does not.     

From revealed preference to preference revelation

Utility functions are regarded as elements of a linear space that is paired with a dual representation of choices to demonstrate the similarity between preference revelation and the duality of prices and quantities in revealed preference. With respect to preference revelation, quasilinear versus ordinal utility and choices in an abstract set versus choices in a linear space are distinguished and their separate and common features are explored. The central thread uniting the various strands is the subdifferentiability of convex functions.     

When Ross meets Bell: The linex utility function

At first glance, there would appear to be no relationship between Bell’s (1988) concept of one-switch utility functions and that of a stronger measure of risk aversion due to Ross (1981). We show however that specific assumptions about the behavior of the stronger measure of risk aversion also give rise to the linex utility function which belongs to the class of one-switch utility functions. In particular, this utility class is the only one that satisfies a stronger version of Kimball’s (1993) standard risk aversion over all levels of wealth. We apply our results to consider n$n$th-degree deteriorations in background risk and their effect on risk taking behavior.     

马克思主义企业产权理论在国有企业改革中的运用

本文简要地回顾了国有企业改革的四个重要阶段,研究了马克思主义产权理论在国有企业改革中的具体运用,并提出了以下观点,1、马克思企业产权理论为国有企业改革提供了方向;2、马克思揭示的商品所有权规律为企业法人财产所有权提供了理论基础。;3、马克思揭示的商品所有权两重性的规律,为我国国有企业两权分立、政企分开提供了理论基础。