How do very open economies adjust to large immigration flows? Evidence from Spanish regions

We study the labor market effects of the large immigration wave in Spain between 2001 and 2006. In this period the foreign-born share increased from 6% to 13%, with a total inflow exceeding three million immigrants. Our analysis exploits the large variation in the size of immigration flows across Spain's regions. To identify causal effects, we take advantage of the fact that immigrants' location choices were strongly driven by early migrant settlements that arrived during the 1980s. We find that the relatively unskilled migration inflows did not affect the wages or employment rates of unskilled workers in the receiving regions. The growth of the unskilled labor force was absorbed mostly through increases in total employment. This increase did not originate in changes in the composition of regional output, but was instead driven by changes in skill intensity at the industry level. Regions that received a large inflow of unskilled immigrants increased the intensity of use of the now more abundant (unskilled) labor, relative to other regions. The key industries responsible for this absorption were retail, construction, hotels and restaurants and domestic services. These results are inconsistent with standard open economy models but are in line with recent empirical studies for the United States and Germany.     

Pace of work and piece rates

Using cross-industry survey data, I examine how the determinants of the pace of work affect the probability of using piece rates. Internal determinants raise the likelihood of piece rates, while response to external needs lowers the probability.     

浅析信息化工程的实现——以河北前进钢铁集团有限公司为例

文章通过借鉴国内外领先行业领域信息化建设的理论和已上线系统,结合前进钢铁公司(下文简称前钢公司)的实际情况,构建前钢公司总体信息化系统架构。并通过与周边计算机系统的合理功能分担与接口集成,实现前钢公司各个系统间信息实时传递,使企业的管理更加清晰、细致和严谨,从而进一步提升企业管理能力和产品质量,降低生产经营成本,满足对外快速响应、对内高效沟通的管理需求。     

Avoiding pitfalls and realizing potentials: researching redundancy regulation in Sweden,the United Kingdom and Japan

This paper attempts to explore the theoretical and practical implications of conducting comparative research in the realm of legal science. The endeavour is based on experiences gained from engaging in such activities as part of a research project in labour law. In order to allow for a critical evaluation of ways in which to regulate redundancy, the study mentioned sets Swedish collective agreements on employment security against British redundancy pay legislation and the Japanese Employment Stabilizations Fund system. The paper discusses the pitfalls and potentials of the chosen approach and presents some tentative conclusions regarding its benefits.     

A2/O工艺处理焦化废水

本文介绍了采用厌氧-缺氧-好氧生物脱氮工艺(简称A2/O工艺)处理焦化废水的工艺流程及原理,和主要构筑物及运行基本情况,并进行了分析总结。     

农村脱贫人口返贫的阻断机制研究

随着我国扶贫的伟大胜利,返贫问题成为新的关注点。针对返贫现象形成的原因、阻断机制和对应建议,论文采用观察和深度访谈的方法对湖南一些扶贫地区展开了调查研究。研究发现,造成返贫的原因主要有四个方面:自然环境、重大疾病、文化程度和思想桎梏。论文提出其阻断机制为:建立灾害预警和应急系统、建立针对性的健康库、组织乡村培训和展开科普教育。论文对国家、地方政府和农村脱贫后的发展提出了一些建议。     

一种新颖的低功耗、强移动性的密码锁设计

本文介绍一种基于单片机控制的电子密码锁设计。本系统由P89LPC900系列单片机、矩阵键盘和报警系统组成。系统能完成电子控制开锁、超时报警、超次锁定、管理员解密和修改用户密码的基本功能。除上述基本的密码锁功能外,还具有节电模式、掉电存储、按键中断唤醒等功能。该系统结构简洁、成本低、体积小,功能实用。