网架式抗震全息照相实验台

本文主要介绍网架式抗震全息照相实验台的研发背景、创新点及使用效果。该专利已申请外观设计专利,专利号为zl200530146934.8。     

Life tables and population parameters of the green leafhopper,Nephotettix cincticeps (Uhler), in the southwestern district of Japan with special reference to the first generation on foxtail grass

Summary The three year (1988–1990) life tables ofNephotettix cincticeps were constructed, and the daily survival rate and longevity of female adults were estimated by Hokyo and Kiritani’s (1967) method for the overwintering and the first-generations on the foxtail grass in Okayama, southwestern Japan. The life tables and the population parameter values estimated were compared with those in the other generations on rice. The FARMCOP suction sampler was employed to survey the population density. The durations of pre-ovarial maturation of female adults of the 1st generation on foxtail grass and rice seedling were similar. Longevity of adults of the overwintering and the first generations which emerged on the wild host was longer than that of the other generations (2nd and 3rd generations) on the rice plants. Fecundity of females decreased successively as the generation proceeded and it became lowest in the final 3rd generation. Only about 3.5 percent of first-instar nymphs of the 1st generation emerged as adults in the fallow field. The survival rate of nymphs on foxtail grass was always lower in comparison with that on rice plants. However, the survival rates of nymphs on foxtail grass and rice seedling were not significantly different from each other under laboratory conditions. In the fields, senescence of foxtail grass occurred in the midst of nymphal period of the 1st generation. The survival rate of nymphs on foxtail grass decreased with the increasing in the nymphal density. Abundance of spiders during the 1st generation was higher than that in the early stage of rice plants.     

JSP开发平台的建立

介绍了JSP开发平台的建立的过程,并针对在建立过程当中可能出现的一些问题,提出了解决方案。     

On Robust and Efficient Designs for Risk Estimation in Epidemiological Studies

Abstract.  We consider the design problem for the estimation of several scalar measures suggested in the epidemiological literature for comparing the success rate in two samples. The designs considered so far in the literature are local in the sense that they depend on the unknown probabilities of success in the two groups and are not necessarily robust with respect to their misspecification. A maximin approach is proposed to obtain efficient and robust designs for the estimation of the relative risk, attributable risk and odds ratio, whenever a range for the success rates can be specified by the experimenter. It is demonstrated that the designs obtained by this method are usually more efficient than the commonly used uniform design, which allocates equal sample sizes to the two groups.     

著者号码表标准化研究述评

2 0余年来 ,人们呕心沥血研究的 2 0余种标准化著者号码表 (方案 )之所以没能达到标准化书次号要求 ,并不是努力不够 ,而是因为著者号在取号原理上只是一种“类区分”方法 ,按照著者号取号原理区分出来的只是某著者的一类不同著作 ,因而理论上不可能成为统一书次号。     

Measure of Asymmetry for Square Contingency Tables Having Ordered Categories

For the analysis of square contingency tables with nominal categories, Tomizawa and coworkers have considered measures that represent the degree of departure from symmetry. This paper proposes a measure that represents the degree of asymmetry for square contingency tables with ordered categories (instead of those with nominal categories). The measure proposed is expressed using the Cressie–Read power-divergence or Patil–Taillie diversity index, defined for the cumulative probabilities that an observation falls in row (column) category i or below and column (row) category j (> i ) or above. The measure depends on the order of listing the categories. It should be useful for comparing the degree of asymmetry in several tables with ordered categories. The relationship between the measure and the normal distribution is shown.     

中国食物系统演化及其包容性：基于食物货币的视角

基于中国投入产出表,利用食物美元核算方法,分析1987-2020年我国食物系统增加值的行业与要素分配结构,以及食物系统各行业的劳动收入差异,以考察食物系统演化及其包容性。研究发现：第一,中国食物人民币中的农业生产份额从1987的66.02%下降到2020年的45.89%,而食品加工、服务行业的份额呈上升态势,食物系统在参与主体方面的包容性增强。第二,食物系统就业仍然以农业生产部门为主,但比重从1987年89.83%下降到2020年68.4%。农业劳动力转移到相关的加工业、服务业、运输业、金融业等部门。第三,食物系统的劳动收入和劳动生产率不断增加,1987年到2020年分别增长22倍和28倍。第四,食物系统内各行业的劳动收入差距呈现波动式下降态势,收入分配方面的包容性较低但在不断提高。泰尔指数从2002年的0.38下降到2020年的0.32,收入差距主要来自分行业内各细分行业之间。     

开放人口分要素预测法细节处理技术

分要素预测法能为社会经济发展规划提供不可或缺的全面详实的未来人口资料,但预测的环节、需考虑的因素多尤其是在某些细节方面很难把握。整个预测过程分为五个步骤,三个分变量的预测分解为水平预测和模式预测,在预测的每个环节上有多种方法可供选择,在参数的设置上更具有很大的技巧性。     

Life table analysis of the green rice leafhopper,Nephotettix virescens (distant) (Hemiptera: Cicadellidae), and efficient vector of rice tungro disease in asynchronous rice fields in Indonesia

Summary Population dynamics ofNephotettix virescens was studied in 17 paddy fields transplanted at intervals of about 1 month in 1988–1990. The adult density was highest either in the immigrant or the 1st generation and sharply decreased to the 2nd generation. The survival rate of the 1st generation was lowest in the transition season when areal population density increased. Key factor analysis revealed that the nymphal and adult mortality of the 1st generation (kn) was the principal source of population fluctuations. No significant correaltion was found between kn and natural enemy density, natural enemy density/healthy egg density, or the precipitation during the nymphal period. On these bases adult emigration was suspected to be the key factor. Areal population build-up ofN. virescens in the transition season was considered to occur as a result of increasing immigration to young stages of rice. Contribution from Indonesia-Japan Joint Program on Food Crop Protection (ATA 162), which was implemented by the Directorate of Food Crop Protection, Ministry of Agriculture, Indonesia and Japan International Cooperation Agency, Japan.     

中国乒乓球运动技术的发展研究

针对中国国球即乒乓球的运动技术进行了详细的阐述和分析,认为中国乒乓球项目的成绩是建立在以近台快攻技术体系为根本、多种技术打法共有的基础上。利用这种方式,我国的乒乓球比赛成绩领先全球,无论单人还是团体的成绩一直排名世界第一。我国乒乓球技术的观念一直保持与时俱进,走在世界的前列。