Max‐infinitely divisible models and inference for spatial extremes

For many environmental processes, recent studies have shown that the dependence strength is decreasing when quantile levels increase. This implies that the popular max‐stable models are inadequate to capture the rate of joint tail decay, and to estimate joint extremal probabilities beyond observed levels. We here develop a more flexible modeling framework based on the class of max‐infinitely divisible processes, which extend max‐stable processes while retaining dependence properties that are natural for maxima. We propose two parametric constructions for max‐infinitely divisible models, which relax the max‐stability property but remain close to some popular max‐stable models obtained as special cases. The first model considers maxima over a finite, random number of independent observations, while the second model generalizes the spectral representation of max‐stable processes. Inference is performed using a pairwise likelihood. We illustrate the benefits of our new modeling framework on Dutch wind gust maxima calculated over different time units. Results strongly suggest that our proposed models outperform other natural models, such as the Student‐t copula process and its max‐stable limit, even for large block sizes.     

Compensation or competition: Bias in immigrants' access to active labour market measures

Whether participation in active labour market programmes (ALMPs) pushes individuals back into employment depends on the programme's characteristics. On the basis of encompassing registry data that allow us to control for usually unobserved employability, we find evidence of a systematic access bias whereby jobcentre caseworkers in Switzerland assign unemployed persons to activation measures based on a competition logic that is mainly driven by an economic rationale and the jobcentre's performance evaluation. This practice seems problematic because it results in an overrepresentation of immigrants in measures with little efficacy rather than in measures that could compensate for employability disadvantages. Conversely, Swiss citizens are more likely to enter beneficial human-capital-intensive measures. It is plausible that this discrepancy in programme participation amplifies the general labour market disadvantages of immigrants.     

论职业病病人的人身损害补偿与赔偿请求权--以《职业病防治法》第58、59条规定为中心

职业病病人的人身损害通常具有缓发性、不可逆等特质。《职业病防治法》第58、59条分别规定了工伤保险待遇给付请求权和人身损害赔偿请求权。工伤保险待遇在本质上属于人身损害补偿，如要实现损害之全部填补，职业病病人可以选择从契约关系、侵权行为、保险契约、法律之特别规定等视角，以仲裁或诉讼方式请求用人单位予以人身损害赔偿。     

The gender pay gap in nonprofit executive compensation in South Florida

In general, systemic imbalance in pay between men and women is well established, but the literature on pay imbalance is mixed for nonprofit executives. Difference in organizational size could be a relevant factor in explaining pay imbalance, as previous research suggests average female nonprofit executives lead smaller organizations. The present study examines the role of governance accreditation on the gender gap in chief executive pay, using a 2 × 2 analysis of covariance to control for organizational size (as measured by annual revenue) when comparing samples of accredited and nonaccredited organizations in South Florida. We found a wage gap for gender, with female executives averaging 12% less compensation than male executives, after controlling for organizational size. No significant effect was found for accreditation; although the only significant difference between genders was in the nonaccredited sample, the findings hint that any trend towards pay equity would be due to a pattern of the male executives in the accredited sample being paid less than their counterparts in nonaccredited organizations.     

高管薪酬激励、战略差异与企业研发投入

文章选取2013—2018年A股共计1221家制造业上市企业的数据为研究样本,实证检验了高管薪酬激励、战略差异与企业研发投入的关系。研究发现:高管薪酬激励、战略差异都能显著促进企业研发投入;战略差异能够显著抑制高管薪酬激励对企业研发投入的促进作用。文章不仅丰富了高管薪酬的研究,还为制定企业战略,加大创新力度提供了参考,同时也丰富了企业研发投入影响因素的研究。     

Managing Demand Uncertainty through Core Acquisition in Remanufacturing

We discuss the optimal raw material acquisition strategy for a third party remanufacturer (3PR). We specifically investigate whether a 3PR should acquire used products or cores in bulk with uncertain quality levels, or in sorted grades with known quality levels; and whether to acquire and remanufacture cores before the demand is realized (planned acquisition), or after the demand is realized (reactive acquisition), or on both occasions (sequential acquisition). When only sorted cores are acquired, we find that, (i) it is optimal to acquire cores in multiple grades to balance acquisition and remanufacturing costs; (ii) if reactive acquisition is possible, it reduces the assortment size (number of grades in which cores are acquired) and the total inventory acquired in the planned acquisition; and (iii) the optimal portfolio of grades to acquire and the optimal acquisition and remanufacturing quantities of these grades can be determined analytically. When bulk cores are acquired in addition to sorted cores, the property of reduction in assortment size of the planned acquisition is preserved. We also show that the 3PR should acquire only a fraction of the demand in planned acquisition, and leave the rest for reactive acquisition. This fraction changes during the lifecycle of a remanufactured product. Using a combination of empirical and realistic data from a smartphone remanufacturer we show that sequential acquisition increases expected profit by up to 8% and 27% over only planned and only reactive acquisitions respectively, and reduces the inventory acquired by up to 21% over only planned acquisition.     

救赎：寻求民族文化的出路——解读莫里森的《柏油孩子》

高速铁路具有高度集成、高精度的技术特点，运营过程中经受列车质量、速度、密度等多种因素影响，地理位置因素往往是影响铁路设备状态演变的决定性因素。采用网格化管理技术可将空间上连续分布的管理对象划分成较小的单元网格，有利于从空间位置角度研究管理对象状态的变化规律。随着信息系统技术、大数据技术的迅猛发展，基于位置而不是基于专业更符合高速铁路的管理需求，网格化管理技术给高速铁路管理带来了新的视角。     

论生态环境损害赔偿诉讼与环境公益诉讼之衔接

在现行司法实践中,我国对生态环境损害之救济采取的是生态环境损害赔偿诉讼与环境公益诉讼并行的"双轨制"模式.通过分析典型案件可以发现,现行立法未能为化解生态环境损害赔偿诉讼与环境公益诉讼之间的制度"碰撞"提供明确的规范指南,导致"两诉"之间时常会陷入管辖冲突与衔接困境.生态环境损害赔偿诉讼的模糊属性以及相关立法规定的缺失,是导致"两诉"衔接陷入困境之根由.为此,应当在准确识别生态环境损害赔偿诉讼性质之前提下,通过立法对"两诉"之间的顺位规则、索赔主体机制等核心规范予以明确.具体而言,未来我国应当明确生态环境损害赔偿诉讼优于环境公益诉讼的顺位规则,并建立"行政机关—环保组织—检察机关"三位一体且逐层递进的索赔主体结构,最大程度发挥"两诉"之制度合力.     

征地过程中的退出意愿、受偿诉求与行为策略——基于被征地者视角的本土研究述评

进入经济高速增长期和社会快速转型期的中国，导致了被征地者这一焦点群体的迅速激增。作为征地制度改革和基层社会治理的重要承载体，该群体在征地过程中的退出意愿、受偿诉求与行为策略等问题已得到不少本土情景下的实证研究的重视，形成了一系列有影响的研究成果。围绕“退出意愿”，研究者提出了个体特征论、家庭结构论、空间区位论、发展期望论、身份锚定论、政策认知论六种理论假说。围绕“受偿诉求”，除了通常作为谈判之焦点的补偿数额，学者们也揭示出被征地者对于分配方案、程序正义、生存保障的诉求。围绕“行为策略”，研究者主要通过博弈模型、案例分析两种方法进行研究。尽管部分研究已经呈现了上述三个维度之间交融沟通的趋势，但三者各自为阵的孤立局面依旧存在。如何促成被征地者的类型知识、需求学说和行动理论之间的逻辑联结，揭示其中的内在机制，建立出一套整合性框架，应当成为下一步的精进方向。