劳动力转移对城乡居民收入差距的非线性影响研究

借鉴已有相关研究成果,将劳动力转移、农业技术水平与城乡居民收入差距联系起来思考,可以具体地考察劳动力转移对城乡居民收入差距的影响.文章以农业技术水平作为门槛变量,选取2009—2019年中国31个省份的面板数据,利用泰尔指数测定城乡收入差距,以劳动力转移作为核心解释变量构建面板门槛模型,实证得出劳动力转移对城乡居民收入差距的非线性影响.研究发现:劳动力转移可以缩小城乡居民收入差距,且该影响具有单一门槛效应.在农业技术水平较低时,劳动力转移对城乡居民收入差距收敛效应较小;当农业技术水平越过门槛值达到较高水平后,劳动力转移对缩小城乡居民收入差距的效果几乎增加了一倍.此后,通过替换解释变量泰尔指数为城乡人均可支配收入比、替换核心解释变量农业技术水平为农业生产效率重新建立面板门槛模型,发现上述结论仍然成立,其检验结果具有较强的稳健性.文章将农业技术进步、劳动力转移、城乡居民收入差距这三个重要变量纳入同一模型框架中,在加深劳动力流动影响城乡居民收入差距这一视角的研究的同时,对缩小城乡居民收入差距政策的制定提供了重要的参考意义.     

技术嵌入与数字化商业模式创新——基于飞贷金融科技的案例研究

随着数字技术的快速发展,数字化商业模式创新成为企业竞争的利器,而技术嵌入是企业内化数字技术支撑数字化商业模式创新的重要策略.本文基于飞贷金融科技的创新实践开展纵向案例研究,探究技术嵌入对数字化商业模式创新的影响.研究发现:技术嵌入包含技术整合和技术开发,两种策略在企业发展过程中经历了不同形式的演变.其中,拼凑式技术整合更有利于商业模式要素创新,而协奏式技术整合更有利于商业模式架构创新.利用式技术开发更有利于商业模式渐进创新,而探索式技术开发更有利于商业模式颠覆创新.最终,案例企业的数字化商业模式呈现出一条"流程信息化→渠道平台化→产品数字化→技术产品化"的进阶式演化路径,数字化程度相应呈现"类抛物线"的演变规律.本研究丰富了数字化商业模式创新的相关理论,并为科技型企业构建数字化商业模式提供了实践启示.     

考虑属性关联的两阶段获胜者确定模型

研究了多属性逆向拍卖的获胜者确定问题。考虑属性之间的两两关联，以定义在2-可加模糊测度上的Choquet积分表达拍卖人的偏好，其中模糊测度的值由拍卖人提供的偏好信息推测得出。由于一般情况下与偏好信息一致的模糊测度取值并不唯一，考虑所有一致的评分函数提出了两阶段获胜者确定方法。首先采用线性规划挑选出在任意评分函数下可能获胜的报价，再通过混合整数规划确定一个与所有一致的评分函数的评价结果最为接近的报价排序，以得分最高者为稳健获胜报价。仿真实验表明，大量的报价为不可能获胜报价，说明了在第一阶段进行筛选的必要性。与现有方法的比较表明了该方法的有效性，且在拍卖轮数较大、报价数目较多时，该方法在计算效率上更有优势。     

What is Integration? A Comparative View from Immigrants and Municipal Policy

The ongoing project of citizenship construction in societies receiving international immigration demands a perspective that takes into account the interests, views and needs of all socio-demographic groups, including those of newcomers as potential new citizens. We interviewed representatives of 16 immigrant associations operating in the Spanish autonomous community of Galicia, reviewed immigration policy in 13 Spanish (Galician) municipalities, and interviewed 20 municipal government staff members who put these into practice. With this research, we aim to explore the perspectives of immigrants with respect to their own integration and to examine how these compare with local policies designed to facilitate these processes. By comparing the immigrant representatives' perceptions with local policy discourses and practice, our study reveals how local integration practice is not only inconsistent with its own policy discourse but also fails to consider and include immigrants' own understandings of what integration means and how it can be achieved.     

案例行动学习法——效率与效果的兼顾

案例教学法、行动学习法等主流商科情境教学模式虽在国内商学院中得到广泛的应用,但囿于使用过程中的资源限制、实施变形及方法本身的局限性,导致教学双方的反馈尚不尽如人意。本文介绍了一种全新的商科情境教学方法--"案例行动学习法"。论文应用建构主义理论探讨了"案例行动学习法"的基本原理,研究了该种方法的能力建构机理,分析了其成为工商管理主流情境教学方法的效率与效果的平衡机理,介绍了前期应用的效果。研究结果表明,"案例行动学习法"作为一种全新的工商管理情境教学方法,能够将案例教学与行动学习两种方法的优点有机结合在一起,具备在全国范围内推广的条件。     

Inferences for a Partially Varying Coefficient Model With Endogenous Regressors

In this article, we propose a new class of semiparametric instrumental variable models with partially varying coefficients, in which the structural function has a partially linear form and the impact of endogenous structural variables can vary over different levels of some exogenous variables. We propose a three-step estimation procedure to estimate both functional and constant coefficients. The consistency and asymptotic normality of these proposed estimators are established. Moreover, a generalized F-test is developed to test whether the functional coefficients are of particular parametric forms with some underlying economic intuitions, and furthermore, the limiting distribution of the proposed generalized F-test statistic under the null hypothesis is established. Finally, we illustrate the finite sample performance of our approach with simulations and two real data examples in economics.     

Differences in Child Health Across Rural,Urban, and Slum Areas: Evidence From India

The developing world is rapidly urbanizing, but an understanding of how child health differs across urban and rural areas is lacking. We examine the association between area of residence and child health in India, focusing on composition and selection effects. Simple height-for-age averages show that rural Indian children have the poorest health and urban children have the best, with slum children in between. With wealth or observed health environment held constant, the urban height-for-age advantage disappears, and slum children fare significantly worse than their rural counterparts. Hence, differences in composition across areas mask a substantial negative association between living in slums and height-for-age. This association is more negative for girls than boys. Furthermore, a large number of girls are “missing” in slums; we argue that this implies that the negative association between living in slums and health is even stronger than our estimate. The missing girls also help explain why slum girls appear to have a substantially lower mortality than rural girls, whereas slum boys have a higher mortality risk than rural boys. We estimate that slum conditions (such as overcrowding and open sewers), which the survey does not adequately capture, are associated with 20 % to 37 % of slum children’s stunting risk.     

Does Remittance Outflow Stimulate or Retard Economic Growth?

This article evaluates the association between remittance outflow (RMO) and economic growth in the Gulf Cooperation Council (GCC) countries. The results of this evaluation indicate that RMO Granger creates gross domestic product (GDP) per capita in three countries, namely, Bahrain, Oman and Saudi Arabia. Similarly, the results for causality from GDP per capita to RMO are significant for four countries, namely, Bahrain, Kuwait, Qatar, and Saudi Arabia. The findings differ from those of the household consumption model, stating that higher RMO will decrease economic activity. GDP per capita is the main determinant of RMO, suggesting that economic growth promises and encourages continuous RMO and vice versa. The adverse impact of RMO can be minimized by encouraging the local population to be productive in the private sector, as local productivity will reduce the huge influx of foreign workers and provide valuable local investment opportunities to lessen the amount being remitted.     

哲学的教育与儒者的教育——以孔子和柏拉图为例

教育本身有一种非常广泛的意义。这种广泛意义的教育具有三个基本性质:(一)它关怀一个人的整全人生的那种善;(二)它要吸纳广泛的文化内容而融会成为一种观点;(三)它本身就是生活实践。以孔子与柏拉图为例,儒者的教育与古代希腊哲学活动所包含的教育都具有这种广义的人文教育的观点。这种观点的蜕变形式之一是"授人以渔"的人文教育观点。"提高素质"的观点似乎是好一些的看法。但这两种都远离了关怀我们作为人的整全人生的那种善的目的。儒者的和哲学的广义的人文教育观点可以容纳"授业"的专门教育的观点,但以所授的为有益于人的整全人生之善的真实技艺且具有真实拥有此种技艺者为条件。我们需要重新评估儒者的教育和希腊人所看到的哲学活动的教育对我们作为人的整全人生的关怀的重要价值,并基于这种重估来澄清和校正各种专门人文知识与技艺的教育的目的。