The Work Profiler: Revision and maintenance of a profiling tool for the recently unemployed in the Netherlands

For the public employment services of many Member countries of the Organisation for Economic Co-operation and Development, the importance of using profiling tools for job seekers is increasing rapidly in importance. With this trend, there is also widening concern about the risks of an over reliance on such tools. Part of the concern lies with a lack of transparency concerning how such tools work. This article aims to address this by offering a detailed investigation of the Work Profiler – the instrument used in the Netherlands by the Institute for Employee Benefits (Uitvoeringsinstituut Werknemersverzekeringen – UWV) to predict re-employment success and provide a diagnosis of key factors hindering job seekers’ return to work. Professionals use these insights to deepen their understanding of the situation of job seekers and decide together with job seekers how to support their return to work. UWV decided to maintain and revise the Work Profiler through a large-scale study involving a sample of 53,238 people. Work Profiler 1.0 was developed in 2007–2010 and has been in use on a regional basis since 2011 and nationwide since 2015. This article explains how the new tool (version 2.0; implemented in 2018) works and, most importantly, demonstrates the choices made to ensure that it functions well and is used effectively by professionals. These latter two aspects are rarely discussed in the literature.     

Substitution and spill-overs between early exit pathways in times of extending working lives in Europe

This article investigates to what extent instrument substitution between early exit pathways took place in Europe between 1995 and 2015. Using Eurostat aggregate data on labour market inactivity and employment rates among the population aged 55–64 in 19 European countries, we analyse substitution effects between pathways and overall spill-over effects into non-employment. In spite of a strong decline in early exit and rises in older workers’ employment rates, findings suggest that instrument substitution was common especially between early retirement and disability. Reductions in early exit coincided with considerable spill-overs into non-employment, yet these spill-overs were limited when pathways contracted simultaneously.     

嘉前靖期承前启后的文学思想

承弘正诗文复古思潮之绪馀,嘉靖前期的文学思想呈现出多元发展的格局.顾磷、崔铣等复古派成员将精力转向道学;唐顺之、王慎中等人主张师法唐宋古文,并接受阳明心学影响;杨慎、高叔嗣等人主张师法六朝或中唐诗,追求情韵深远或藻思丽逸之美.他们为文学思想从复古到革新方向的发展作了铺垫和准备.     

论普通高等学校军事学科结构体系的内涵与形式

普通高等学校军事学科就是为了适应人才培养和加强国防后备力量建设的需要而开设的理论和实践课程,探讨其结构体系的内容和形式,是适应新形势下军事发展和变革的需要,确定军事学科培养目标和规格的根本出发点。     

Stability theorems for maxima of dependent sequences

Three stability theorems due to Gnedenko (1943), Barndorff-Nielsen (1963), and Tomkins (1986) are extended to the sample maxima of identically distributed ?-mixing and m-dependent sequences.     

从阿历克和安琪儿看《德伯家的苔丝》的悲剧实质

《德伯家的苔丝》被誉为是哈代悲剧小说中的经典之作。从毁灭苔丝的两个主要人物阿历克.杜伯维尔和安琪儿.克莱尔入手,我们从中探究造成苔丝悲剧一生的原因,进而挖潜小说《德伯家的苔丝》的悲剧实质。     

网络技术的伦理问题与伦理关怀

互联网技术的发展,构筑一个数字化生存空间。在这个新型的生存空间里,人际关系具有虚拟性、交互性和开放性的特点,由此也产生许多新的道德问题。要使互联网技术健康发展,必须深入研究网络伦理,加强网络道德教育,提倡技术与人文的融合,防止网络技术异化。     

一些英语字母的根表意

西方分析文化及其背后的演绎逻辑和归纳逻辑,让我们可以根据英语单词的定义,不仅推论出英语字母的根表意,而且推论出英语单词背后所隐含的图画.鉴于文献[1]所揭示的一些英语字母的根表意不够完备、或存在一些错误,本文系统地揭示出字母l,h,c,k,b,p,d,q,e,X和Y的根表意.笔者认为:西方人的线性思维方式决定了字母l可以表示任何人或事物(anybody/anything),这是揭示其他10个英语字母根表意的关键,因为字母l是其他10个英语字母的基本构成元素.     

Design of robust parameter experiments in a continuous space using an evolutionary optimization algorithm

Two common experimental designs used in robust parameter design (RPD) are crossed array and mixed resolution designs. However, the prohibited number of runs, constraints in the design space or special model requirements render some of these designs inadequate. This paper presents the application of an evolutionary strategy to produce nearly optimal design matrices for RPD. The designs are derived by solving a nonlinear optimization problem involving both 𝒟- and 𝒢-efficiency simultaneously. The methodology presented allows the user to obtain new exact designs for a specific number of runs, and a particular experimental region. The combination of 𝒟- and 𝒢-efficiency results in experimental designs that outperform the corresponding benchmarks.     

ON ESTIMATION OF THE POPULATION SPECTRAL DISTRIBUTION FROM A HIGH‐DIMENSIONAL SAMPLE COVARIANCE MATRIX

Sample covariance matrices play a central role in numerous popular statistical methodologies, for example principal components analysis, Kalman filtering and independent component analysis. However, modern random matrix theory indicates that, when the dimension of a random vector is not negligible with respect to the sample size, the sample covariance matrix demonstrates significant deviations from the underlying population covariance matrix. There is an urgent need to develop new estimation tools in such cases with high‐dimensional data to recover the characteristics of the population covariance matrix from the observed sample covariance matrix. We propose a novel solution to this problem based on the method of moments. When the parametric dimension of the population spectrum is finite and known, we prove that the proposed estimator is strongly consistent and asymptotically Gaussian. Otherwise, we combine the first estimation method with a cross‐validation procedure to select the unknown model dimension. Simulation experiments demonstrate the consistency of the proposed procedure. We also indicate possible extensions of the proposed estimator to the case where the population spectrum has a density.