Sampling design proportional to order statistic of auxiliary variable

The sampling designs dependent on sample moments of auxiliary variables are well known. Lahiri (Bull Int Stat Inst 33:133–140, 1951) considered a sampling design proportionate to a sample mean of an auxiliary variable. Sing and Srivastava (Biometrika 67(1):205–209, 1980) proposed the sampling design proportionate to a sample variance while Wywiał (J Indian Stat Assoc 37:73–87, 1999) a sampling design proportionate to a sample generalized variance of auxiliary variables. Some other sampling designs dependent on moments of an auxiliary variable were considered e.g. in Wywiał (Some contributions to multivariate methods in, survey sampling. Katowice University of Economics, Katowice, 2003a); Stat Transit 4(5):779–798, 2000) where accuracy of some sampling strategies were compared, too.These sampling designs cannot be useful in the case when there are some censored observations of the auxiliary variable. Moreover, they can be much too sensitive to outliers observations. In these cases the sampling design proportionate to the order statistic of an auxiliary variable can be more useful. That is why such an unequal probability sampling design is proposed here. Its particular cases as well as its conditional version are considered, too. The sampling scheme implementing this sampling design is proposed. The inclusion probabilities of the first and second orders were evaluated. The well known Horvitz–Thompson estimator is taken into account. A ratio estimator dependent on an order statistic is constructed. It is similar to the well known ratio estimator based on the population and sample means. Moreover, it is an unbiased estimator of the population mean when the sample is drawn according to the proposed sampling design dependent on the appropriate order statistic.     

御园自是湖光好，山色还须让静宜——浅析香山静宜园28景经营意向

香山静宜园是著名清代皇家园林,始建于乾隆朝,是清代皇家园林的重要代表,涵纳的造园意象非常丰富,具有极高的研究价值。系统地研究静宜园28景的构成要素和设计手法,总结出香山静宜园建筑设计和景观经营意向,有助于深入探索自然山水园的思想精髓,对当今的建筑环境以及景观设计都有重要的借鉴和指导意义。     

Bayesian locally optimal design of knockout tournaments

The elimination or knockout format is one of the most common designs for pairing competitors in tournaments and leagues. In each round of a knockout tournament, the losers are eliminated while the winners advance to the next round. Typically, the goal of such a design is to identify the overall best player. Using a common probability model for expressing relative player strengths, we develop an adaptive approach to pairing players each round in which the probability that the best player advances to the next round is maximized. We evaluate our method using simulated game outcomes under several data-generating mechanisms, and compare it to random pairings, to the standard knockout format, and to two variants of the standard format.     

地市级党报发展史上的新闻传奇——媒介生态学视野下全国第一张渔业报《舟山报》的由来及其影响

1956年，《舟山报》改办为全国第一张渔业报，这是“双百”方针指导下地方报纸新闻改革成功的鲜活典型。今天，从媒介生态学的角度，分析促使当年《舟山报》改办成功的内外生态因子，对于地市报刊准确把握媒介生态位，办出地方特色，具有重要意义。     

增强邓小平理论课教学时效性的切几点

应该选好切入点,与时俱进地增强邓小平理论课的教学时效性。课堂讲授的重要切入,应以学生为中心,抓兴奋点,预留老师“答记者问”时间,精心设计讨论;实践参与的重要切入,则在于联系改革实际的典型事例,注重用参观,社会调查等方式增强学生的社会责任感和判断力。     

对班主任工作的思考

本文根据笔者工作中的实践经验,从“全面了解学生情况、培养学生自信心、建立良好班风、建立班集体目标、重视学生心理健康教育、做好学生思想工作、客观公平对待学生、重视素质教育、沟通学校、家庭、社会三方面的教育”九个方面分析论证了班主任工作是一项研究人、影响人、教育人和塑造人的系统工程,它在实现学校办学目的、教育目标、教学功能等方面起着非常重要的作用。     

略论隋炀帝时中日外交关系的空前发展

杨广即位后 ,凭着国力的强大 ,进一步推行开放的外交政策 ,加强与日本的联系。日本多次派遣隋使团来中国 ;隋炀帝第一次接受日本留学生 ,并派裴世清回访日本 ,把中日友好关系推向了一个新的阶段。     

一种LOG-MAP算法的改进迭代实现及其结构

对LOG-MAP算法进行了可并发性分析,利用可以完整接收一个N长符号传输帧的条件以及正向迭代和反向迭代中的固有对称性质,提出了LOG-MAP算法的一种修正迭代实现算法,其正向和反向迭代计算次数只需码长N的一半,故比标准LOG-MAP算法提高了一倍的处理速度,且没有空间开销的增加、同时,根据修正的迭代实现算法给出了相应的适于FPGA实现的双总线硬件结构的实现方案。     

解决农村贫困问题与全面建设小康社会

解决农村贫困问题的途径在于:对现有的扶贫方式予以创新;加强贫困地区的基础设施建设;注重提高贫困人口的素质;切实减轻农民负担;加快城镇化进程,引导农村劳动力合理有序流动;引导贫困人口主动参与扶贫活动。     

学校早期读写训练对儿童读写成绩的影响

利用儿童家庭一学校早期语言与识字能力系列测验对每个目标儿童语言与识字能力发展进行了评定，并解释了这些测量结果与儿童学校早期语言与识字测量指标之间的关系。结果表明：(1)儿童丰富的同伴关系与词汇量、应变识字能力、下定义能力和理解力有关；(2)教师语言的丰富性有助于儿童语言与识字能力发展；(3)识字课程变量与三岁儿童的应变识字成绩和四岁儿童词汇量和故事理解有关；(4)影响儿童语言与识字能力的因素不是单一的，而是一个因素群。