Inference for Parameters Defined by Moment Inequalities Using Generalized Moment Selection

The topic of this paper is inference in models in which parameters are defined by moment inequalities and/or equalities. The parameters may or may not be identified. This paper introduces a new class of confidence sets and tests based on generalized moment selection (GMS). GMS procedures are shown to have correct asymptotic size in a uniform sense and are shown not to be asymptotically conservative. The power of GMS tests is compared to that of subsampling, m out of n bootstrap, and “plug‐in asymptotic” (PA) tests. The latter three procedures are the only general procedures in the literature that have been shown to have correct asymptotic size (in a uniform sense) for the moment inequality/equality model. GMS tests are shown to have asymptotic power that dominates that of subsampling, m out of n bootstrap, and PA tests. Subsampling and m out of n bootstrap tests are shown to have asymptotic power that dominates that of PA tests.     

Towards an adequate and sustainable replacement rate in defined benefit pension systems: The case of Spain

The main objective of this article is to determine, based on internal data, replacement rates for a defined benefit pension system, with two aims: the adequacy of pensions – measured in terms of the expenditure of retirees – and the sustainability of the system. For this purpose two instruments are used: the internal rate of return, and techniques based on systems of notional accounts. These figures, derived from internal data, will serve, by comparison with the replacement rate of the system, to assess whether the system tends more towards adequacy or sustainability. The system studied is that of Spain.     

律师职业:忠诚与公益的统一--从"代理人"的内涵谈律师的职业定位及其使命

在当前的社会环境中,人们已经普遍接受律师作为委托代理人的身份定位.但如果简单地从表面概念上理解"代理人"的内涵,往往会导致将律师当作当事人的"代表人",使其在追求正义过程中难以发挥职业特质.正确理解"代理人"的深刻内涵,提升律师职业群体的尊严与使命感已经迫在眉睫.     

我国企业在实施购并战略时存在的问题与改善建议

文章认为合理采用购并战略有助于企业的发展壮大,但应避免急于求成而陷于盲目"多元化"的误区.为使购并战略取得成功,必须采取稳步发展的方式,注重培育自身的核心竞争力来带动被购并企业一起成长,通过管理机制和企业文化的整合来真正实现购并双方的有机融合.     

n维Euclid空间中的平行体及其体积

将几何空间中的立体及其体积概念推广到n维Euclid空间中,利用向量对子空间的正交投影分解给出了平行体的计算公式和一系列性质,并将其应用于行列式的计算,得到相应的性质。     

Comparative accuracy of value solutions in non-sidepayment games with empty core

This article reports a test of the predictive accuracy of solution concepts in cooperative non-sidepayment n-person games with empty core. Six solutions were tested. Three of these were value solutions (i.e., -transfer value, -transfer nucleolus, and -transfer disruption value) and three were equilibrium solutions (deterrence set, stable set, and imputation set). The test was based on a laboratory experiment utilizing 5-person, 2-choice normal form games with empty core; other related data sets were also analyzed. Goodness-of-fit results based on discrepancy scores show that the three value solutions are about equally accurate in predicting outcomes, and that all three are substantially more accurate than the other solutions tested.     

中短期时间序列的经济预测模型

通过引入Fourier级数和ARMA(n,n-1)模型,建立一种用于中短期时间序列经济预测的新模型。在该模型中,利用曲线拟合来剔除时间序列的趋势,利用Fourier级数来分析季节变动,利用ARMA(n,n-1)模型来处理不规则波动。最后,用一个算例说明模型的可行性。     

低浓度三分子模型的时间周期耗散结构

分别求得了低浓度三分子模型抛物型反应扩散方程在固定边界条件（Ｄｉｒｉｃｈｌｅｔ条件）和零流边界条件下的初级时间周期解     

诗歌：认知整合意象的结果

概念整合是一种非常普遍的认知活动。Fauconnier及Turner提出的概念整合理论被广泛运用于许多语言现象的意义构建过程,为研究各个层次的意义构建开拓了广阔的前景。文章以概念整合理论为框架,从意象的角度来论证诗歌意义构建的认知过程,分别运用概念整合的四种网络模式具体分析意象构建诗歌的认知过程。其主要目的在于证明概念整合在诗歌意义构建的认知过程中具有关键性的作用,论证诗人运用意象构建诗歌意境的过程即是诗人压缩各种重要关系,整合各种意象的认知过程。     

Special pension schemes for workers in arduous and hazardous jobs: Functions and conditions to ensure equal treatment

Most jurisdictions grant differentiated and more beneficial treatment – usually in the form of early retirement, and commonly under special pension schemes – to workers in arduous or hazardous jobs. Several justifications for such treatment have been advanced, including i) compensating the worker for the hardship, ii) protecting the worker from the hazard, and iii) realizing the principle of equality in the distribution of costs and benefits in the social security system. This article analyses these functions from a socioeconomic perspective and explains how early retirement for workers in arduous and hazardous jobs is necessary to ensure equality by treating “unequals unequally”, and in proportion to their inequality. Moreover, this article presents a precise formula to calculate when a worker should be allowed to retire, so that workers in occupational domains with a shorter life expectancy do not systematically enjoy lower expected benefits from the pension system while having contributed the same amount. Implications for the design and desirability of special pension benefits are discussed.