Labor force participation of women left behind in Tajikistan

This paper examines the impact of male migration on the labor force participation of the women left behind in Tajikistan. Studies from many countries show that when men migrate, female labor force participation decreases and this is largely explained by the income effect from remittances. Our study challenges this finding. Using panel data from 2007, 2009 and 2011, we find that, in Tajikistan, migration has no significant effect on the number of hours that women work. We use panel data which allow us to control for unobservable heterogeneity, rather than the cross-sectional data used by others. We analyze several countervailing factors that may have neutralized the income effect, such as the need to substitute for the missing labor in the household. We also find that women work more when the household has a farm, regardless of the presence of a migrant in the household.     

基于改进Transformer模型的文本摘要生成方法

传统的文本摘要方法，如基于循环神经网络和Encoder-Decoder框架构建的摘要生成模型等，在生成文本摘要时存在并行能力不足或长期依赖的性能缺陷，以及文本摘要生成的准确率和流畅度的问题。对此，提出了一种动态词嵌入摘要生成方法。该方法基于改进的Transformer模型，在文本预处理阶段引入先验知识，将ELMo(Embeddings from Language Models)动态词向量作为训练文本的词表征，结合此词对应当句的文本句向量拼接生成输入文本矩阵，将文本矩阵输入到Encoder生成固定长度的文本向量表达，然后通过Decoder将此向量表达解码生成目标文本摘要。实验采用Rouge值作为摘要的评测指标，与其他方法进行的对比实验结果表明，所提方法所生成的文本摘要的准确率和流畅度更高。     

电价交叉补贴现状及测算方法研究

当前我国的销售电价体系存在严重的交叉补贴情况,随着输配电价改革的进行,过渡期间交叉补贴及财务能力的测算成为各省市场化价格体系的重要组成部分.本文通过对国内外交叉补贴现状及我国销售电价体系进行研究,分析浙江现行销售电价及交叉补贴的特点,讨论静态交叉补贴测算方法,就平均电价法、 工业居民比价法、 理论电价法三种方法进行对比分析,提出交叉补贴解决思路及未来销售电价发展趋势.     

An appreciation of Professor Stephan Klasen and his contribution to development economics

Stephan Klasen, one of the world's leading development economists, passed away on October 27, 2020. We reflect on his life's work as an exemplary scholar, his relentless quest to improve development policy, and his legacy as a mentor and source of inspiration to his students.     

新形势下的旅游产品设计——心理疏导型森林休闲产品开发可行性研究

文章论述了国内外关于心理疏导与森林休闲的研究现状,心理疏导型游憩林设计及其产品开发构想,并对浙江天目山心理疏导型森林休闲产品开发的可行性进行了实证调查和分析。     

对外贸易对人力资本提升的实证研究——基于我国省级面板数据

本文利用1999～2008年间的省级面板数据,在对各变量进行单位根检验、协整检验的基础上,运用sys-GMM估计对东部、中部以及西部地区的对外贸易对人力资本的影响进行实证研究.经研究得出以下结论:一是东部地区的对外贸易有利于人力资本提升,主要是由于对外贸易额增加使高等教育程度的人力资本增长,同时抑制了只受过基础教育的人力资本,且东部地区通过进口贸易引进了大量的资本技术型产品和设备,给东部地区带来了更多的技术模仿与学习机会;二是中部和西部地区的对外贸易时人力资本提升的正相关关系不显著,主要是由于中部和西部地区的对外贸易额小,对各层次人力资本影响均不显著.     

隧道钢筋地质雷达检测技术的研究

探地雷达是岩土工程检测中较为经济、高效检测工具之一,在检测混凝土内钢筋的位置与数量方面的应用效果与钢筋的直径及间距以及天线分辨率有很大关系,文章利用900MHz天线在检测隧道二衬中第一层钢筋的位置与数量具有良好的效果,但对第二层钢筋的检测效果不佳,钢筋相互干扰的问题仍是以后雷达检测中值得研究的方向。     

基于投入产出的创新型企业成长能力评价指标的建立

投入产出反映的经济关系是投入和产出及其相互间的一般平衡关系。从投入产出角度分析创新型企业的成长能力,便于分析创新型企业成长中各个创新因素的投入和产出的动态循环过程和创新型企业的持续成长能力。文章针对创新型企业成长的内涵,运用投入产出思想从投入、产出和态势三个维度分析创新型企业成长中各个因素关系并建立创新企业成长能力评价指标,为企业可持续成长提供诊断方式。     

A limited information estimator for the multivariate ordinal probit model

A limited information estimator for the multivariate ordinal probit model is developed. The main advantage of the estimator is that even for high dimensional models, the estimation procedure requires the evaluation of bivariate normal integrals only. The proposed estimator also avoids the potential problem of encountering local maxima in the estimation process, which is looming using maximum likelihood. The performance of the limited information estimator is shown by Monte Carlo experiments to be excellent and it is comparable to that of the maximum likelihood estimator. Finally, an application of the limited information multivariate ordinal probit to model the consumption level of cigarette, alcohol and betel nut is presented.     

Favor in exchange for trust? The role of subordinates’ attribution of supervisory favors

Favor exchange is known to be essential for building personal relationships (guanxi) in China. In two studies, we explore the effect of supervisory favors on subordinates’ trust in supervisor; we further explore how subordinates’ attributions of supervisory favors affect trust in supervisor independently and in interaction with supervisory favors. We find evidence that supervisory favors has a positive effect on trust in the supervisor; merit attribution of supervisory favors has a positive effect on trust in the supervisor but personal favor attribution has a negative effect; merit attribution also moderates the effect of supervisory favors such that supervisory favors has a stronger positive effect on trust in the supervisor for subordinates who make higher merit attribution than for those who make lower merit attribution. Theoretical and practical implications are discussed.