Identifying Different Areas of Inhomogenous Mineral Subsoil: Spatial Fluctuation Approaches

We use a recently proposed fluctuation-type procedure for detecting breaks in spatial regions to distinguish between hard and soft areas of inhomogeneous mineral subsoil like additives, air pockets, and adhesion. For a proper application, some refinements of the procedure are necessary. Both simulation evidence of the refinement and the application on the subsoil yield favorable results.     

工业产品的逆向工程技术及应用

文章阐述了解决逆向工程应用于工业产品逆向建模过程中的一些关键技术.首先介绍对逆向工程的理解和目前主流逆向技术应用流程，其次以具体工业产品为例从点云获取、点云处理、逆向建模、误差分析、3D打印制造，最终获得产品样件的过程.     

辽宁省城镇企业职工延迟退休方案设计

随着老龄化社会的快速到来,延迟退休的方案受到关注。以辽宁省城镇企业职工为研究对象,从人力资本的角度出发,设计一套科学合理的退休方案。重点探讨方案设计的关键要素,如延迟退休的最佳时点、目标年龄、最佳速度,并在此基础上为辽宁省城镇企业职工设计出动态、弹性、渐进性的延迟方案。     

A change point method for Phase II monitoring of generalized linear profiles

In this article, we adopt the change point approach to monitor the generalized linear profiles in phase II Statistical process control (SPC). Generalized linear profiles include a large class of profiles defined in one framework. In contrast to the conventional change point approach, we adopt the Rao score test rather than the likelihood ratio test. Simulated results show that our approach has a good performance over any possible single step change in process parameters for two special cases of generalized linear profiles, namely Poisson and binomial profiles. Some diagnostic aids are also given and a real example is introduced to shed light on the merits of our approach in real applications.     

Statistical frameworks for setting cutoff points of metabolic syndrome criteria

We propose three statistical frameworks for determining the cutoff points of metabolic syndrome (MetS) criteria, consisting of six components that are the same as in widely used MetS definitions, e.g., the 2004 updated NCEP-ATPIII criteria. Several international organizations have proposed MetS definitions; no literature indicates that any of these definitions is based on statistical frameworks. For all the three frameworks, the cutoff points are set to maximize the observed prevalence rate of stroke and DM. The three frameworks differ in assumptions on the joint distribution of the six components. Using the cohort data from a regional hospital in Taiwan, we illustrate applications of the three frameworks and compare them with the updated NCEP-ATPIII definition and the 2009 consensus definition of IDF and AHA/NHLBI. The performance measure is the odds ratio, the odds of getting stroke or DM within subjects with MetS divided by the analogous odds for subjects without MetS. Our numerical results show that the odds ratios of the three frameworks are higher than those of the updated-NCEP and consensus definitions, showing that the proposed frameworks seem to provide a better association of MetS with stroke and DM.     

Parameter Estimation for Inhomogeneous Space‐Time Shot‐Noise Cox Point Processes

We consider the problem of parameter estimation for inhomogeneous space‐time shot‐noise Cox point processes. We explore the possibility of using a stepwise estimation method and dimensionality‐reducing techniques to estimate different parts of the model separately. We discuss the estimation method using projection processes and propose a refined method that avoids projection to the temporal domain. This remedies the main flaw of the method using projection processes – possible overlapping in the projection process of clusters, which are clearly separated in the original space‐time process. This issue is more prominent in the temporal projection process where the amount of information lost by projection is higher than in the spatial projection process. For the refined method, we derive consistency and asymptotic normality results under the increasing domain asymptotics and appropriate moment and mixing assumptions. We also present a simulation study that suggests that cluster overlapping is successfully overcome by the refined method.     

一类基于单调映射的松弛投影算法

构造了一类基于A-极大（m）-松弛单调映射的松弛投影算法,并给出了基于变分包含问题的收敛分析.文章的结论推广了相关文献的结论.     

On the use of general positive quadratic forms in simultaneous inference

Some aspects of using general positive definite quadratic forms to project simultaneous confidence intervals for scalar linear functions of a parameter vector are explored. Firstly, a criterion is introduced according to which Scheffe’s S-method (using the inverse of the dispersion matrix of the allied estimators) is optimal. Secondly, it is shown how to construct simultaneous confidence bands (for regression surfaces) with minimal confidence interval length at a given arbitrary point.     

EVA接枝共聚物的合成及其降凝性能评价

结合大庆原油的物性特征,在降凝机理的指导下,以EVA与烷基马来酰亚胺接枝反应,合成了一类新型原油降凝剂。以目标物的降凝幅度为评价指标,优选出合适的合成条件：当EVA与十八烷基马来酰亚胺的物质的量的比为1∶20,引发剂过氧化二苯甲酰的量为2.5%,聚合时间为6h,聚合温度为90℃时,聚合物的降凝效果最好,即目标物加量为100mg/kg时凝点降低15℃。利用红外光谱仪对脂肪族胺、马来酸酐和十八烷基马来酰亚胺进行分析的结果表明：脂肪族胺与马来酸酐反应生成了十八烷基马来酰亚胺。利用核磁共振波谱仪对EVA及其接枝产物进行分析的结果表明：接枝反应确实存在,接枝率可以达到6.7%。     

“ヽ”的历史源流及作用

＂ヽ＂最初是作为一种句读符号的身份出现的,其源头可上溯至春秋战国时期的文献材料中。《侯马盟书》的盟辞中业已使用,细小一点的用于句子中间,表示短暂的停顿,相当于今天的顿号、逗号;粗大一点的用于誓辞之末,表示文意的完结,相当于今天的句号。到了秦代,这种＂点＂的形状稍有变化,不再写成斜点,而是写成圆点了。到了西汉,点号的使用更为广泛,形体上也有一些变化,有大圆点、中圆点、短顿点、长顿点几种。东汉时期,点号进入了字典和经书之中。许慎在《说文解字》中收有＂ヽ＂。熹平石经中用圆点为篇号、章号。此后,点号可以用作着重号和灭除号。到了唐代,点号又可用作校对符号。宋明时期,点号还可以有别的用途。到了近代,可用于着重号、句读号等。解放后新中国制定的第一套＂标点符号用法＂中有顿点和圆点两种,分别表示顿号和着重号。