Migration,Friendship Ties,and Cultural Assimilation

We study immigrant assimilation by analyzing whether friendship with natives is a measure of cultural assimilation, and by investigating the formation of social ties. Using the German Socio‐Economic Panel, we find that immigrants with a German friend are more similar to natives than those without German friends, along several important dimensions, including concerns about the economy, an interest in politics, and a host of policy issues. Turning to friendship acquisition, we find that becoming employed, time spent in the host country, the birth of a child, residential mobility, and additional education acquired in the host country are significant drivers of social network variation.     

重复扰动下富含水地层的加固技术

随着城市地铁、地下空间、铁路和公路隧道的大规模建设和发展,工程中要面对的各种复杂地层的地基处理及松软地层改良问题越来越多。文章结合广州市轨道交通5号线(大坦沙～中山八盾构区间)2#联络通道塌方后,在重复扰动的富含水地层进行加固处理的成功经验,详细地介绍了采用无收缩双液二重管注浆技术在重复扰动下富含水地层中的注浆加固方法。     

Profiling mobile TV adopters in college student populations of Korea

By profiling demographic characteristics, perceived general adoption attributes, perceived value-based adoption attributes, motivational needs, mass media use, and content interest, this exploratory study examines the nature of four categories of mobile TV adopters — current, potential, continuous non-, and discontinuous user groups. Despite the limited sample size (N = 214), there are some meaningful findings. First of all, the non-adoption rate of mobile TV of the continuous non-, and discontinuous user groups is higher than the adoption rate of the current and potential user groups. Less than half of the respondents (N = 34) who had used TV on a mobile device were unwilling to use it again in the next twelve months, and almost half of those (N = 102) did not have the intention of using it within the coming year. The results suggest that the discontinuous group seems to have been dissatisfied with the actual mobile TV use when compared with their expectations and evaluations, while the potential user group is more likely to have high expectations and positive evaluations before the adoption and use of mobile TV. All user groups were unwilling to pay the fee, despite the current and potential user groups perceiving the exceptional values. No differences were found in the personality trait of innovativeness and mass media use behaviors among the four groups.     

Labor Income Taxation,Human Capital,and Growth: The Role of Childcare*

In this paper, we examine the effects of labor income taxation on growth in an overlapping generations model in which schooling and childcare play a role in the production of human capital. We compare such effects with those obtained in a model in which only schooling matters for skill formation. We show that the omission of childcare from the technology of skill formation can bias the results related to the impact of labor income taxation on growth.     

论海外企业的抵补保值

<正> 随着对外开放的日益深入,许多进出口公司为了拓展海外市场,纷纷在海外成立一些行政上隶属本公司,经营上完全独立、自负盈亏的海外企业。这些企业的成立,对公司直接听取消费者意见,了解市场需求,扩大商品销售均起着不可估量的作用。     

我国数字经济发展战略与路径研究--基于国际经验的考察

当前我国经济正处于增速放缓、结构升级及经济发展动力转换的新常态阶段。寻找新的经济增长点和新动能是经济新常态时期的重要任务和目标,而发展数字经济则是目前最优的经济发展模式。2017年数字经济被写入政府工作报告,预示着数字经济作为继农业经济和工业经济发展模式之后的又一新型社会经济发展形态,已成为新常态下中国经济发展的新动能,也是推动我国供给侧结构性改革的重要抓手。但数字经济模式属于新型经济发展模式,目前尚无一个完整的发展参考体系,需要我国自寻探究发展道路。由此,本文在研究数字经济内涵及其战略意义的基础上,基于我国数字经济发展现状和国外发展战略提出了我国数字经济的具体发展路径。     

我国数字贸易发展:现状、挑战与策略研究

借助互联网新技术的发展与应用推广,全球数字贸易得以快速发展,市场规模增速已经超过传统货物贸易及服务贸易,成为世界贸易发展新动能。我国数字技术和数字经济的高速发展使传统制造业与服务业融合加深,贸易服务性更强,因此我国数字贸易正面临着前所未有的发展机遇。但数字贸易作为数字经济的重要表现形式,其经营模式以及国际间的冲突摩擦,又致使其面临诸多发展挑战,由此提出从内部制度和外部环境两方面同时进行改进与完善,进而推动我国数字贸易发展。     

数字经济发展提升了区域创新能力吗——基于长江经济带的空间计量分析

基于长江经济带11省市2008—2018年面板数据,测度省域数字经济发展水平,并使用空间杜宾模型实证探究数字经济发展对区域创新能力的影响。结果发现：数字经济发展水平是影响区域创新能力的重要因素,对本省域技术创新、产品创新均有促进作用,而在部分矩阵下对省际创新发展有负向溢出效应;经济发展水平、科研经费投入、人才投入与外商投资均对区域创新产生一定影响。为此,建议加强区域技术联系与资源共享,打破数字经济在区域间创新发展壁垒,优化资源配置,实施创新资源精准投入,推动新型基础设施建设,提升数字经济应用水平,以进一步提高区域创新能力。     

企业数字化转型对商业模式创新的影响

基于组织变革理论与知识基础观,引入知识管理与企业家导向变量,探讨企业数字化转型对商业模式创新的影响机制与情境效应。结果表明：①数字化转型对商业模式创新存在显著正向影响;②知识管理在数字化转型对商业模式创新的影响过程中发挥中介作用;③相比于低水平企业家导向,高水平企业家导向会强化数字化转型与知识管理的关系,弱化知识管理与商业模式创新的关系。     

数字化转型研究知识结构与热点趋势

随着信息通信技术的渗透扩散,数字化转型已成为重要研究方向之一,把握数字化转型研究热点和趋势,可为未来研究提供指引和参考。针对WOS数据库935篇文献,运用CiteSpaceV进行可视化分析,探索数字化转型领域的知识结构、热点和趋势。结果表明,数字化转型研究高产国家为美国、德国和英国,高产机构为哥本哈根商学院、瓦萨大学、麻省理工学院等,《TechnologicalForecastingandSocialChange》是发表文章最多的期刊,研究热点包括“信息技术、组织变革和绩效”、“工业4.0和数字化转型”与“商业模式创新”等。关键词突现分析表明,以客户为中心的商业模式创新和新的价值创造方式是新趋势。最后,从前因—过程—结果三方面提出数字化转型研究内容框架与未来展望。