Random coefficients integer-valued threshold autoregressive processes driven by logistic regression

AStA Advances in Statistical Analysis - In this article, we introduce a new random coefficients self-exciting threshold integer-valued autoregressive process. The autoregressive coefficients are...     

A class of tests of proportional hazards assumption for left-truncated and right-censored data

In this paper, we proposed a class of tests of proportional hazards assumption for left-truncated and right-censored data based on a pair of estimators of the hazard ratio constant. Using counting process and martingale theory, the asymptotically normal distribution of the test statistic is derived and a family of consistent estimators of variance are also provided. Extensive simulation studies were conducted to evaluate the performance of the proposed test statistics under finite sample situations. Two real data sets are analyzed to illustrate our method.     

一江两河与白城古代文明——从八百里瀚海谈起

本文依据白城地区的古代遗址及出土文物资料,论述了从一万多年前的旧石器时期到距今三千多年前的新石器时期,白城地区人类生存活动情况和白城地区存在的富河沟门和昂昂溪两种文化类型。证明了白城自古以来就是适于人类生存的地方。今天形成的“八百里瀚海”现象,是人类无休止的开发造成的后果。进而让人们了解历史,关注生态,保护环境。     

论西省与东晋南朝文学简

西省是晋代的一个负责起草诏敕的专职官署,在南朝又有所发展,带有朝廷省署、中央文馆和帝王待诏的三重含义,具有这三方面的特征。受世风和士风的影响,东晋南朝的西省已经发展为一个司文机构,用人以文才为重,撰文以清辞为美,体现了南朝文学清丽的美学特征,具有产出文学作品的制度职能。     

Nonparametric estimation of current status data with dependent censoring

This paper discusses nonparametric estimation of a survival function when one observes only current status data (McKeown and Jewell, Lifetime Data Anal 16:215-230, 2010; Sun, The statistical analysis of interval-censored failure time data, 2006; Sun and Sun, Can J Stat 33:85-96, 2005). In this case, each subject is observed only once and the failure time of interest is observed to be either smaller or larger than the observation or censoring time. If the failure time and the observation time can be assumed to be independent, several methods have been developed for the problem. Here we will focus on the situation where the independent assumption does not hold and propose two simple estimation procedures under the copula model framework. The proposed estimates allow one to perform sensitivity analysis or identify the shape of a survival function among other uses. A simulation study performed indicates that the two methods work well and they are applied to a motivating example from a tumorigenicity study.     

探析电视娱乐节目的平民化特性

在技术环境便利性下电视娱乐节目表现出生产巨量化、嘉宾大众化、主持亲民化、内容通俗化等现象,从精英模式向平民化发展;电视娱乐节目的这种发展走向深受西方民粹主义思想和娱乐主义的影响,同时技术革新在电视娱乐节目平民化发展中也发挥了相当重要的作用;要警惕平民化特性带来庸俗化、技术至上主义对电视娱乐节目产生的风险。     

全角视野下的中国古代诗文名著——评傅璇琮主编《中国古代诗文名著提要》

著名学者傅璇琮先生主编的《中国古代诗文名著提要》于2009年7月由河北教育出版社出版面世，凡238万字，精装5册：汉唐五代卷、宋代卷、金元卷、明清卷、诗文评卷，共收书近两千种，内容丰厚，格局宏伟，是代表中国当今文学目录学研究最高水平的大作。     

涌动的江上诗情——论江行生活与李白诗歌创作的关系

李白长期在外漂泊,主要走水路,江行经验丰富,他所创作的江行诗也是唐代最多最好的,江行生活与他的创作具有明显的因果关系.若从文学创作与江河行旅的关系入手,不仅可以探索到李白江行诗的艺术特色,还能解释为何李白一到江上就多诗情的问题.这个问题还触及诗人情兴的引发与自然环境的关系,涉及诗人构思与取景的关系、诗歌题材与创作个性的关系,有一定的普遍意义.     

鸡葡萄球菌病合并维生素K缺乏的临床病理学研究

本文通过对一肉鸡场自然感染的急性败血型葡萄球菌病同时合并维生素K缺乏的病鸡进行了临床病理学研究，结果表明：该合并症主要表现出全身高度泛发性出血及贫血，血液高度凝固不良，多数病雏胸腹部相继出现浮肿性、渗出性、坏疽性皮炎，全身各脏器的出血性变质性皮炎，上述临床病理性变化主要呈现一种复杂的急性败血性及血液性状改变的综合变化。