我国居民杠杆率现状及影响因素研究

近年来,我国居民部门杠杆率的快速上升引起社会各界关注。本文使用货币信贷和城镇储户调查数据,对我国居民部门杠杆率和偿债能力现状进行了分析,并运用各省住户贷款数据计算各省的居民杠杆率,使用面板数据模型对居民杠杆率上升的原因进行了实证分析。结果表明,房价的快速上涨和住房销售的增长都对居民部门杠杆率的上升有显著正向影响,其中房价上涨的影响程度更大。此外,金融发展水平和老年人抚养比对居民杠杆率有正向影响,少年人抚养比对居民杠杆率有负向影响。     

Properties of Census Dual System Population Size Estimators

We study parametric and non‐parametric approaches for assessing the accuracy and coverage of a population census based on dual system surveys. The two parametric approaches being considered are post‐stratification and logistic regression, which have been or will be implemented for the US Census dual system surveys. We show that the parametric model‐based approaches are generally biased unless the model is correctly specified. We then study a local post‐stratification approach based on a non‐parametric kernel estimate of the Census enumeration functions. We illustrate that the non‐parametric approach avoids the risk of model mis‐specification and is consistent under relatively weak conditions. The performances of these estimators are evaluated numerically via simulation studies and an empirical analysis based on the 2000 US Census post‐enumeration survey data.     

Timing decisions of new product preannouncement and launch with competition

We develop a game-theoretic model to study the timing of new product preannouncement and launch under competition. We derive firms’ optimal timing choices and conducted a numerical analysis to evaluate the role of various factors. Our analytical and numerical results showed that anticipated competitor’s timing choices are the most significant factors. A firm should not preannounce early unless the preannouncement is effective in creating pent-up demands. However, the preannouncement and launch should be rushed if the quality or profit margin of the new product is high, and postponed if the market share of the existing product is high. The market leader should preannounce earlier in a simultaneous game than in a sequential game, but the opposite for the market follower. Data collected from the microprocessor industry validated our model.     

国外战略人力资源管理演进分析

在战略管理兴起的背景下,人力资源管理被提到了战略的地位。本文从演化的视角对战略人力资源管理的文献发展进行探讨,把近三十年的研究文献分为三个发展阶段。第一阶段,强调权变观与匹配观。第二阶段,起初强调人力资源作为重要的战略贡献之源和关注人员管理,后来拓展到人力资本和社会资本的贡献。从20世纪80年代早期以来,这两个阶段不断改变SHRM研究的主题。第三阶段,超越传统的组织边界拓展SHRM活动研究的范围,关注国际SHRM。本文追踪了该领域如何演化,阐述了该研究领域许多主要发现和贡献,讨论了演化的趋势以及未来的研究方向。     

浅谈公路改建设计

结合作者以往工作经验,对公路升级改建设计时应注意的问题做简单探讨。     

基于成本优化的制造业生产物流装配线排序问题分析

为了降低制造业的生产成本，提高收益，在分析生产物流配线闲置和超载成本的基础上，采用粒子群算法对其进行优化，并利用模糊自适应改进惯性权值，通过实证研究表明该方法实用，可操作性强，可以有效降低制造业生产物流成本，具有广泛的应用价值。     

斯里兰卡中资项目机遇与风险分析

近年来,中资企业在斯里兰卡承接及投资项目日益增多。中斯合作关系密切,发展潜力巨大。中资项目在斯机遇和挑战并存,文章分析中资项目在斯里兰卡的风险点,并对重点投资潜力行业及区域提出建议。     

法制环境、管理者能力与企业债务契约

本文从管理者能力的视角出发,选取2010-2018年沪、深A股上市公司为样本,实证分析了管理者能力对债务契约的影响及其影响路径。研究证明:管理者能力越强,企业的债务期限结构越短、债务融资成本越低。进一步研究发现,在不同的法制环境中,二者的关系存在异质性,即管理者能力对债务期限结构、债务融资成本的影响在法制环境较高的地区较为显著。本文丰富了企业债务契约的影响因素,探寻了管理者能力影响债务期限结构、债务融资成本的路径。     

Economic evaluation of human urinary kallindinogenase for patients with acute ischemic stroke in China

Objectives: In China, both human urinary kallindinogenase (HUK) and 3-n-butylphthalide (NBP) are recommended for clinical use to improve cerebral blood circulation during an acute ischemic stroke (AIS). The objective was to evaluate the economic value of HUK vs NBP for patients with AIS from a Chinese payer’s perspective.

Methods: An economic evaluation based on data of patients who have been treated with either HUK (n?=?488) or NBP (n?=?885) from a prospective, phase IV, multi-center, clinical registry study (Chinese Acute Ischemic Stroke Treatment Outcome Registry, CASTOR) was conducted to analyze the cost and effectiveness of HUK vs NBP for AIS in China. Before the analysis, the patients were matched using propensity score. Both a cost-minimization analysis and a cost-effectiveness analysis were conducted to compare the matched pairs. A bootstrapping exercise was conducted for the matched arms to demonstrate the probability of one intervention being cost-effective over another for a given willingness-to-pay for an extra quality-adjusted life-year (QALY).

Results: After propensity score matching, 463 pairs were matched. The overall medical cost in the HUK arm is USD 2,701.20, while the NBP arm is USD 3,436.83, indicating HUK is preferred with cost-minimization analysis. Although the QALY gained in the HUK arm (0.77176) compared with the NBP arm (0.76831) is statistically insignificant (p?=?.4862), the cost-effectiveness analysis as exploratory analysis found that, compared with NBP, HUK is a cost-saving strategy with the lower costs of USD 735.63 and greater QALYs gained of 0.00345. Among the 5,000 bootstrapping replications, 100% indicates that HUK is cost-effective compared with NBP under a 1-time-GDP threshold; and 97.12% indicates the same under a 3-time-GDP threshold.

Conclusion: This economic evaluation study indicates that administrating HUK is a cost-saving therapy compared with NBP for managing blood flow during AIS in the Chinese setting.     

社会化视域下企业自愿性人才流失现状及对策建议——以高校毕业新员工为例

社会化使新员工明晰了任务角色,帮助新员工完成职业进化,从根源上审视人和企业的不匹配问题,为高层次新员工流失困境的突破提供了崭新的视角。文章在阐述我国高校毕业新员工自愿性人才流失概况,挖掘其离职深层原因的前提下,探究组织社会化对人才流失的预防和规避作用,并分别从新员工自身和企业环境这两个角度提出相应对策。