消费者导向类型与电商全渠道决策研究

从现实出发，基于不同消费者导向类型研究了电商的全渠道决策问题。首先建立电商单渠道销售的基础模型，并得出最优产品组合、价格和交付时间。在此基础上，给出了消费者为产品导向型和渠道导向型情况下电商采取全渠道决策的条件，得出双渠道产品组合、价格及交付时间的最优决策；并进行了数值验证。研究发现，同一渠道提供的产品其最优价格相同，最优交付时间只和消费者耐心程度及交付成本函数有关。若消费者为产品导向型，仅当双渠道运营成本之差较小且消费者耐心程度较低时，电商进入线下渠道才有利可图，且在线下渠道提供最受欢迎的产品，线上渠道提供剩余产品。若消费者为渠道导向型，电商进入线下渠道必然有利可图，且在线下渠道提供最受欢迎的产品，线上渠道提供所有产品。     

Simultaneous structure estimation and variable selection in partial linear varying coefficient models for longitudinal data

Partial linear varying coefficient models (PLVCM) are often considered for analysing longitudinal data for a good balance between flexibility and parsimony. The existing estimation and variable selection methods for this model are mainly built upon which subset of variables have linear or varying effect on the response is known in advance, or say, model structure is determined. However, in application, this is unreasonable. In this work, we propose a simultaneous structure estimation and variable selection method, which can do simultaneous coefficient estimation and three types of selections: varying and constant effects selection, relevant variable selection. It can be easily implemented in one step by employing a penalized M-type regression, which uses a general loss function to treat mean, median, quantile and robust mean regressions in a unified framework. Consistency in the three types of selections and oracle property in estimation are established as well. Simulation studies and real data analysis also confirm our method.     

略论中国民族地区乡村经济的主要特征、类型及其演化

在中国民族地区经济中 ,乡村经济仍占很大的份额。本文着重研究民族地区乡村经济的特征、类型和变化趋势 ,并以劳动就业的主体模式为标准 ,构造了由非集约的耕猎或耕牧结合型乡村经济、畜牧经济或牧农结合型乡村经济、集约农耕或种养结合型乡村经济以及农工商复合型乡村经济组成的四种类型体系。文章认为 ,在民族地区 ,这些类型都在演变的过程中 ,而农工商复合型乡村经济类型将可能成为其他各种类型演变的方向     

古代新疆经济文化区的划分——兼论维吾尔族经济文化类型的演变

现代维吾尔族主要是一个农业民族,其经济文化类型属于绿洲灌溉农业。历史上维吾尔族曾经历了狩猎、游牧等经济模式,9世纪中叶以后,逐渐改变为定居的农业民族。在边疆地区全面建设小康社会进程中,民族地区的现代化发展道路选择应保持民族文化的传承性。     

新世纪以来大学题材长篇小说的基本类型

在当代文学领域，大学题材长篇小说创作长期处于边缘位置，直至进入新世纪，该类作品才大量出现。根据文本内容与现实生活的距离以及不同的艺术手法，可以将这些文本大致划分为三种类型：回忆型、体验型和想象型，其中后两者在内容方面有一定交互性，但在创作技法上却有显著不同，想象型文本虽也有现实底色，但艺术手法更为夸张。这三种类型的出现，既有文学题材自身的原因，也与作家们的身份和经历、文学自身艺术手法的多样以及日益宽松的创作环境有关。     

论行政诉讼非法证据类型

非法证据排除规则最早在美国确立并得到发展,形成一套比较完整的体系。我国对非法证据排除规则的探讨很长时期仅停留在理论阶段,2012年《刑事诉讼法》修改中采纳并确立这一证据规则,使其从理论探讨变为实践,也为行政诉讼非法证据排除规则的探讨提供了很好的借鉴。目前,行政诉讼法正处于修改时期,以现有的法律规范为基础探讨行政诉讼非法证据的类型及其判断标准显得尤为必要。     

Looking at intra-European mobilities through migrant types: young Spanish and Polish migrants in London and The Hague

This paper echoes the need to further explore the social effects of European Union integration by examining the increasingly complex and diverse scenario of intra-European mobility. Much research has focused on the intensification of East-to-West migrant flows after the enlargements of 2004 and 2007, inspiring a rich conceptualization of migrant typologies. Theoretically, this paper argues that some of these typologies can be extrapolated to better understand the experiences of other European movers. Empirically, it offers a qualitative and comparative analysis of diverse European young adults’ experiences of mobility: 8 Polish citizens in The Hague and 10 Spaniards in London. The analysis is based on four main dimensions derived from the literature: (1) Motivations to migrate, (2) Labour market participation, (3) Attachments and transnational ties and (4) Family composition and future outlooks. Results map individual differences and similarities contextualized by generational, gendered, educational and socio-economic aspects.     

The reality of net capital gains and annual profit on NZ primary producing businesses: data from a recent survey of all farm types

ABSTRACT

Annual net cash returns and net capital gains provide farmers with their actual and potential monetary rewards, respectively. This article reports on a national farm survey showing both actual and potential returns, on average, are not as high as might be imagined. This is supported by the findings of earlier studies and has implications for rural societies and their associated economies. Data on income, expenses and profit is presented as is data on farm value changes over the life of each farm. The information is adjusted for inflation to provide ‘real’ data. The profit and net capital gain figures are divided into groupings based on a range of criteria such as total farm capital, and labour compliment as a reflection of farm size. Statistically significant differences occur for some groupings such as farm type and farm size.     

试论民间故事类型的传承与过渡礼仪模式——以“黄粱梦”故事为例

民间故事类型的研究重在传承史的梳理和异文的解读，对故事类型传承的动因有所忽略。从“黄粱梦”故事入手，尝试引入“过渡礼仪模式”，阐释民间故事类型中隐含的生命转换过程即生命的社会性特质。对人类生命社会性特质的理解与传递，或许就是众多的民间故事类型传承至今的重要原因。