Socio‐demographic factors and shared leadership behaviors in dispersed teams: Implications for human resource management

Companies increasingly make use of geographically dispersed teams to capture knowledge residing at different locations. In this context, shared leadership is considered a key enabler of team performance. Taking a functional perspective on shared leadership, we thus investigate the relationship between shared leadership behaviors and team performance in dispersed teams. Furthermore, we analyze how socio‐demographic factors that are characteristic for dispersed teams (i.e., high female‐to‐male ratio, high mean age, and high levels of national diversity) affect shared leadership behaviors. Based on data from 96 dispersed teams, we show that shared leadership behavior fosters team performance. Further, we find the socio‐demographic characteristics typical for dispersed teams to foster shared leadership. Theoretical and managerial implications for human resource management are discussed. © 2012 Wiley Periodicals, Inc.     

高收入家庭的理财规划方案

刘先生家庭年度结余77万余元,为典型的421型高收入家庭。刘先生是做磷矿生意的,收入高风险也大,刘太太是农行柜员,收入较稳定,家有女儿读幼儿园,还有四老需要赡养。本理财规划方案在介绍刘先生家庭成员及资产情况基础上,编制家庭资产负债表和收入支出表,分析各项资产比率,指出刘先生家庭现阶段资产配置的不合理之处,旨在对该家庭进行现金规划、教育规划、住房规划、保险规划和投资规划。通过规划,该家庭的理财目标得以实现。     

川西浅层水平井轨迹控制技术

浅层水平井井眼轨迹控制技术是浅层水平井施工的关键环节之一,针对浅层水平井的钻井特点和影响井眼轨迹控制的因素,对现有钻具组合造斜率预测方法进行分析;针对浅层水平井井眼轨迹控制工艺和工具设计提出了一些技术措施,并结合川西浅层水平井钻井情况,总结了浅层水平井井眼轨迹控制工艺技术,得出了浅层水平井井眼轨迹控制几点建议,为今后在川西浅层施工的长水平段水平井积累实钻经验。     

循环水浓缩倍数的涵义及控制方法探讨

文章介绍了甲醇厂循环水系统的具体情况,探讨了浓缩倍数的涵义,并详细分析了浓缩倍数控制范围及影响因素、具体浓缩倍数的计算和控制方法。     

荣地水电站增机扩容工程压力钢管的结构设计

荣地水电站增机扩容工程原发电引水系统主要为总长为2663 m的隧洞，由于隧洞竖井至原钢衬段前的钢筋混凝土衬砌施工质量较差，达不到结构安全运行的要求，因此需对原发电引水系统进行加固处理，经方案比选后，采用竖井段进行埋管回填混凝土加固+下平洞内铺设明钢管的方式进行加固处理，并相应对钢管进行结构设计。     

防治玻璃幕墙渗水浅谈

玻璃幕墙渗水原因非常复杂,涉及到设计、材料使用、施工和管理等各个方面。现对其进行简要分析。     

人口老龄化背景下养老保险制度面临的挑战及对策

21世纪在人口年龄结构上的显著特征就是人口老龄化,在此背景下,老年抚养比上升,退休寿命增加导致的基金支付期限延长,离退休费用刚性攀升和我国板块化的制度结构都构成了养老保险制度面临的挑战。因此为了应对挑战,研究相应的对策显得必要和迫切。     

Estimating panel data models in the presence of endogeneity and selection

We consider estimation of panel data models with sample selection when the equation of interest contains endogenous explanatory variables as well as unobserved heterogeneity. Assuming that appropriate instruments are available, we propose several tests for selection bias and two estimation procedures that correct for selection in the presence of endogenous regressors. The tests are based on the fixed effects two-stage least squares estimator, thereby permitting arbitrary correlation between unobserved heterogeneity and explanatory variables. The first correction procedure is parametric and is valid under the assumption that the errors in the selection equation are normally distributed. The second procedure estimates the model parameters semiparametrically using series estimators. In the proposed testing and correction procedures, the error terms may be heterogeneously distributed and serially dependent in both selection and primary equations. Because these methods allow for a rather flexible structure of the error variance and do not impose any nonstandard assumptions on the conditional distributions of explanatory variables, they provide a useful alternative to the existing approaches presented in the literature.     

The Debt‐Payment‐to‐Income Ratio as an Indicator of Borrowing Constraints: Evidence from Two Household Surveys

Liquidity constraints have been proposed as an important explanation for deviations from the rational expectations/permanent income hypothesis. This paper introduces to the liquidity constraint literature the ratio of a household's debt payments to its disposable personal income, the debt service ratio (DSR). We find that a household with a high DSR is significantly more likely to be turned down for credit than other households. Also, the consumption growth of likely constrained households, identified using the DSR along with the liquid‐asset‐to‐income ratio, is significantly more sensitive to past income than that of other households, confirming the DSR's value in identifying constrained households.     

铝合金外窗质量控制要点及改进措施

近年来,铝合金窗越来越普遍用于住宅小区、办公大楼、公共场所等地。由于铝合金窗产品的质量问题直接涉及消费者的人身健康及财产安全,经常遇到质量投诉;根据多年的检测经验,对铝合金窗从设计到生产及安装过程中的控制要点及改进措施进行探讨。