Random mechanisms for house allocation with existing tenants

We study the house allocation problem with existing tenants: $n$ houses (stand for “indivisible objects”) are to be allocated to $n$ agents; each agent needs exactly one house and has strict preferences; $k$ houses are initially unowned; $k$ agents initially do not own houses; the remaining $n-k$ agents (the so-called “existing tenants”) initially own the remaining $n-k$ houses (each owns one). In this setting, we consider various randomized allocation rules under which voluntary participation of existing tenants is assured and the randomization procedure either treats agents equally or discriminates against some (or all) of the existing tenants. We obtain two equivalence results, which generalize the equivalence results in Abdulkadiroğlu and Sönmez (1999) and Sönmez and Ünver (2005).     

Exploring the relationship between truck load capacity and traffic accidents in the European Union

Applying econometric techniques to EU28 panel data and controlling for explanatory variables such as road types, we find that increased truck load capacity does not necessarily aggravate road traffic safety. Specifically, heavy trucks do not seem to be linked with greater numbers of traffic fatalities/accidents, medium trucks appear to be the worst performers in terms of fatalities, and light trucks seem to be the worst for accidents. In summary, our results clarify the complex relationship between truck load capacity and road safety, pointing to the existence of a negative correlation for accidents per capita and an inverse U-shaped curve for fatalities per capita.     

我国城乡收入差距的地区类型分析

改革开放以来,我国各地区的城乡收入差距均表现为扩大趋势,但由于各地区城乡发展条件的差异,各地区的城乡收入差距及其变化也表现为不同的类型。本文通过将反映各地区收入水平、工业化和城市化水平的变量进行聚类分析,将我国各地区的城乡收入差距划分为城乡高度协调型、城乡中度协调型、城乡低度协调型、城乡低度扭曲型、城乡中度扭曲型和城乡高度扭曲型共六种类型。各地区在1985-2006年期间,城乡收入差距的类型也并不是全部保持不变的,表现为有的地区城乡扭曲程度加剧,有的地区缓解,有的地区时而扭曲加剧、时而扭曲缓解,从而衍生为十种变化类型。这为我国中央和地方政府不是采取＂一刀切＂的政策措施,而是依据不同的城乡收入差距地区类型,有所侧重的治理城乡收入差距提供了参考依据。     

中交哈大高速铁路施工团队管理与激励的研究

本文的研究方法和结论能够提升中交哈大项目团队的经营业绩,成功实现中交集团内部及外部的有效沟通,促使中交集团机构重组的顺利完成。本文的相关研究成果与结论不仅对中交哈大高速铁路施工项目团队管理及激励机制的建设和完善有借鉴作用,而且对于其他建筑施工企业的项目团队管理也具有一定的参考作用。     

Does retail type matter? Consumer responses to channel integration in omni-channel retailing

A critical issue faced by marketing practitioners today is orchestrating strategies that provide a smooth consumer experience in an omni-channel environment. The extant literature offers limited guidance on managing the consumer journey in an omni-channel environment across different retail types. Using the S–O-R framework as its basis, this study generates novel insights by examining how different types of retailers influence consumer perceptions of channel integration (CPCI) as well as consumer empowerment, trust, satisfaction, and patronage intention. Data from 736 consumers was collected using purposive sampling to target those who interact with retailers from high-end specialty stores, department stores, and hypermarkets. The data was then analysed using partial least squares structural equation modelling (PLS-SEM). We find that consumers from high-end specialty stores, hypermarkets, and department stores have different perceptions when patronising the omni-channel retail business. The implications of the study are discussed and suggestions for future research are presented.     

大理乳业发展现状及问题研究

作为大理州传统优势产业的乳业承担着稳定经济发展大局,促进农民收入,保障贫困户稳定脱贫的重要任务。首先对大理州乳业的现实发展状况进行了描述;然后分析了当前制约大理州乳业发展的影响因素;最后通过现状和问题的探讨,试图从完善奶牛良种繁育体系、提高技术创新能力、加大资金投入、强化政府支持力度、提升奶农环保意识、加强销售终端建设六个方面提出促进大理州乳产业健康发展的对策建议。     

我国要约规制型消费者冷静期制度的反思与完善

冷静期制度的建立能够为消费者提供更全面的保障,以其类型化为基础,我国新《消法》（《消费者权益保护法》,简称《消法》）第25条针对其中的要约型作出规定。自新《消法》实施以来,制度的积极作用毋庸置疑,但通过对立法的分析反思可知,仍存在适用范围局限、对象模糊、部分规则缺乏可操作性等问题。是故,在制度的未来改进中,可通过对第25条进行再解释,从适用范围及对象的应然界定与行使规则的细化等方面出发探讨制度完善的可能路径。     

黑龙江地区既有居住建筑节能改造实践的学习研究

在我国北方严寒地区城市,大量的既有建筑进行了节能改造。普遍采用外墙外保温措施以及具有地方特色的建筑元素,但是如果各改造分项配合措施不得当就会降低节能改造的效果。文章从影响建筑节能改造中的各个分项着手,对于既有建筑改造过程中各分项配合以及外墙保温做法问题提出一些技术改进建议。     

企业员工知识分享媒介及其对工作效果的影响——以财会人员为例

通过对财会人员的访谈,将知识分享媒介划分成五种类型:各式书面信息、正式制度下的人际接触、正式制度下的信息科技、非正式制度下的人际接触以及非正式制度下的信息科技。一般企业在进行知识分享时会遇到知识流失与被盗取的障碍。知识分享媒介的性质不同,所能增进的工作效果亦有所不同。正式制度的人际接触是最普遍的,深获企业员工的好评,其所能增进的工作效果非常多元;非正式制度的信息科技,则视员工个人的使用习惯与学习态度而定,对于各项工作效果的提升情形差异很大。     

关中—天水经济区人类发展水平空间差异分析

以人类发展指数(HDI)为测度指标,利用HDI计算公式及ESDA方法,对关中-天水经济区65个区县的人类发展水平进行空间差异分析及空间关联分类。关中-天水经济区人类发展水平大多数处于中下水平,且区域差异明显,呈现由市辖区向周边区县递减的分布特点;构成人类发展指数的三个指标中预期寿命指数和教育指数的区域差异较小,而GDP指数区域差异大;关中-天水各区县的人类发展指数存在较强的正的空间相关性,西安市的雁塔区、未央区、莲湖区、碑林区等9个区县成为高-高聚集型区县的显著性聚集区,而天水市的张家川、清水县、秦安县和宝鸡市的陇县等6个区县成为低-低聚集型的最显著区域。针对关中-天水经济区人类发展水平的区域差异,提出相应的政策建议。