城市社区图书馆发展问题探析

社区图书馆在城市社区文化建设中发挥着重要作用,然而由于我国社区图书馆事业起步较晚,经验不足,在建设和发展的进程中还存在许多不足之处,文章详细列举了目前我国社区图书馆普遍存在的问题并阐述了应对策略。     

Model selection for Lévy measures in diffusion processes with jumps from discrete observations

We deal with parametric inference and selection problems for jump components in discretely observed diffusion processes with jumps. We prepare several competing parametric models for the Lévy measure that might be misspecified, and select the best model from the aspect of information criteria. We construct quasi-information criteria (QIC), which are approximations of the information criteria based on continuous observations.     

中国生育率研究方法:30年回眸

改革开放30年是我国人口学及人口研究迅速成长的30年。生育率研究方法从一个侧面反映出改革开放以来我国人口学研究方法的发展。中国的生育率研究方法既有从西方引进的各种生育率指标和模型,也有中国学者为了适应自己的需要而改进和创建的方法和模型。笔者从生育率度量指标和生育率模型两个方面总结我国生育率研究方法的应用及变化。对在中国生育率研究中所使用的主要方法进行回顾并对这些方法对我国生育率研究的贡献进行总结。     

The effect of different data structures,sample sizes on model fit measures

In this study, our aim was to investigate the changes of different data structures and different sample sizes on the structural equation modeling and the influence of these factors on the model fit measures. Examining the created structural equation modeling under different data structures and sample sizes, the evaluation of model fit measures were performed with a simulation study. As a result of the simulation study, optimization and negative variance estimation problems have been encountered depending on the sample size and changing correlations. It was observed that these problems disappeared either by increasing the sample size or the correlations between the variables in factor. For upcoming studies, the choice of RMSEA and IFI model fit measures can be suggested in all sample sizes and the correlation values for data sets are ensured the multivariate normal distribution assumption.     

Copulas related to piecewise monotone functions of the interval and associated processes

In this work, we derive the copulas related to vectors obtained from the so-called chaotic stochastic processes. These are defined by the iteration of certain piecewise monotone functions of the interval [0, 1] to some initial random variable. We study some of its properties and present some examples. Since often these types of copulas do not have closed formulas, we provide a general approximation method which converges uniformly to the true copula. Our results cover a wide class of processes, including the so-called Manneville–Pomeau processes. The general theory is applied to the parametric estimation in certain chaotic processes. A Monte Carlo simulation study is also presented.     

The exponentiated reduced Kies distribution: Properties and applications

Here we consider an exponentiated version of the reduced Kies distribution and discuss some of its properties. The parameters of the distribution are estimated by the method of maximum likelihood and illustrated with the help of certain real-life data sets. Asymptotic behavior of the maximum likelihood estimators of the parameters of the distribution is also studied by using certain simulated data sets.     

Examples of doubly stochastic measures supported on the graphs of two functions

A doubly stochastic measure (DSM) is a measure μ on the unit square so that μ([0, 1] × A) = μ(A × [0, 1]) = m(A) where m is Lebesgue measure. The set of DSMs forms a convex set in the space of measures. It is known that DSMs supported on the union of two graphs of invertible functions are extreme points of that convex set (Seethoff and Shiflett, 1977/78 Seethoff, T.L., Shiflett. (1977/78). Doubly stochastic measures with prescribed support. Z. Wahrscheinlichkeitstheorie und Verw. Gebiete 41(4):283–288.[Crossref], [Web of Science ®] , [Google Scholar]). In general, there are few examples of extreme points in the literature. There are examples of so-called hairpins where the functions involved are inverses of each other, but there are also examples of the union of the graphs of a function and its inverse does not support a DSM (Sherwood and Taylor, 1988 Sherwood, H., Taylor, M.D. (1988). Doubly stochastic measures with hairpin support. Probab. Theory Related Fields 78(4):617–626.[Crossref], [Web of Science ®] , [Google Scholar]). In this paper, for a function f in a certain class, we find companion functions g so that the union of the graphs of f and g support a DSM even though the union of the graphs of f and f-inverse do not.     

金代宗室管理制度考论

金朝十分重视对宗室的管理,设专门管理机构大宗正府,职掌修撰玉牒、监察训导宗室、宗庙祭祀等宗室事务;宗正官基本上由宗室属亲者担任,但也适当参用世戚勋旧。另有御史台、太常寺以及其他相关机构也兼理宗室事务。这些兼管机构与大宗正府相互配合,各司其职,从不同方面实施对宗室的有效管理。鉴于宗室也是威胁皇权的重要因素,金朝统治者对宗室还采取了诸多政令上的防范措施。     

反贪侦查中非法证据排除规则的现实应对

新刑事诉讼法在总结实践经验的基础上进一步规范和完善了我国非法证据排除规则。该规则的确立和应用将对反贪侦查工作带来巨大的影响和挑战,也将对办案人员的素质提出更高的要求。要保障反贪侦查工作依法、持续、健康开展,就必须对非法证据排除规则进行理智辩证的对待、认真细致的研究和积极主动的应对。以章国锡受贿案为透视,提出了在反贪侦查工作中,严格执行收集证据的禁止性规定,全面落实全程同步录音录像制度,提高侦查人员出庭作证的应对能力,建立非法证据排除的预警机制和做好证据的事后补正等应对非法证据排除规则之对策。     

谈提高高校教师思想政治工作效果的几点措施

当前高校教师存在对思想政治教育态度淡漠、重视业务水平、轻视思想素质的提高、敬业意识淡漠、个人主义倾向严重等问题,通过"四抓"、"四促"可以提高高校教师思想政治工作的效果,提高高校教师的思想政治素质,从而为学校的改革、发展和稳定提供强有力的精神动力和思想保证.