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71.
《Journal of Statistical Computation and Simulation》2012,82(2-3):119-127
A new method for reducing the variance in simalation experiments is presented and evaluated. The method can be regarded as an extension of the antithetic variates principle. We create negative correlation within all pairs of random number while the original mcihod creates correlation only within some pairs. Our method is compared to ihe antithetic variates and crude Monte-Carlo techniques by repeated simulations. The results obtained are ail in favour of our method. 相似文献
72.
This article introduces a new asymmetric distribution constructed by assuming the multivariate normal mean-variance mixture model. Called normal mean-variance mixture of the Lindley distribution, we derive some mathematical properties of the new distribution. Also, a feasible maximum likelihood estimation procedure using the EM algorithm and the asymptotic standard errors of parameter estimates are developed. The performance of the proposed distribution is illustrated by means of real datasets and simulation analysis. 相似文献
73.
在新经济常态背景下,随着人口老龄化程度不断加深,我国财政支出将面临越来越大的挑战,发展养老产业将成为我国应对人口老龄化问题的必然选择。养老产业的发展有利于减轻政府负担,提高老年人生活质量,促进产业调整,缓解就业压力。我国的养老市场规模庞大,并且供不应求,政府高度关注养老产业,为我国大力发展养老产业提供了可行性。但是,尽管目前"保险系""央企系""房企系"等社会资本已经注入,养老产业仍然存在着政府的引导和支持力度不足,缺乏专业人才,相关产业整合难度大,国民养老观念落后等问题。因此,我国应尽快完善相关政策以加强引导和扶持的力度,积极调动社会资源使投资主体多元化,加强养老产业人才队伍建设,加快转变养老观念。 相似文献
74.
75.
Shigeki Koshida Tetsuo Ono Shunichiro Tsuji Takashi Murakami Hisatomi Arima Kentaro Takahashi 《Women and birth : journal of the Australian College of Midwives》2019,32(2):127-130
Background
Decreased fetal movements are associated with adverse perinatal outcomes, including stillbirth. Delayed maternal visits to a health care provider after perceiving decreased fetal movements are frequently observed in stillbirths. Informing pregnant women of the normal range of fetal movement frequency is essential in their earlier visits in order to prevent stillbirth.Aim
To investigate the fetal movement frequency in late pregnancy and the effects of associated perinatal factors.Methods
This prospective multicenter study was conducted in 20 obstetric facilities in our region of Japan. A total of 2337 pregnant women were asked to record the time it took to perceive 10 fetal movements by the modified ‘count to 10’ method every day from 34 weeks of gestation until delivery.Findings
The 90th percentile of the time for the maternal perception of 10 fetal movements was 18–29 min, with a gradually increasing trend toward the end of pregnancy. The numbers of both pregnant women giving birth after 39 weeks’ gestation and infants with a birth weight exceeding 3000 g were significantly higher in mothers who took ≥30 min to count 10 fetal movements than in those who took <30 min.Conclusion
The maternal perception time of fetal movements shows a gradually increasing trend within 30 min for 10 fetal movements by the modified ‘count to 10’ method. Informing pregnant women of the normal range of the fetal movement count time will help improve the maternal recognition of decreased fetal movements, which might prevent fetal death in late pregnancy. 相似文献76.
赵中建 《华北水利水电学院学报(社会科学版)》2011,(6):173-175
根据《概率论与数理统计》课程的特点,结合教学实践,就如何提高教学质量,改善教学方法等方面做了深入的分析和探讨。 相似文献
77.
彭一邶 《湖南人文科技学院学报》2011,(2):45-47
通过对湖南第一师范在校学生的现状了解,进行关于毛泽东书法的调查,搜证文献参考资料,着力影响毛泽东书法在湖南第一师范传承,以激发青年学生对书法的热爱与追求。 相似文献
78.
陈标 《湖南科技大学学报(社会科学版)》2011,14(2):29-34
北师大版7本是有两种封面的一套万岁本,它的编印分多次;瘦宋版是册数最多的一套万岁本,共有11册,它们的突出特点是形式并不统一。 相似文献
79.
Laura L. Bierema 《Human Resource Development International》2013,16(3):366-368
This paper is a retrospective of the 12th International Conference of the Academy of Human Resource Development (Asia Chapter) that took place in Taipei, Taiwan on 5–8 November 2013. This paper provides a brief review of pre-conference workshops, keynote and innovation addresses, parallel sessions and cultural activities. The authors also share their thoughts on the contributions of international conferences to the field of human resource development. 相似文献
80.
根据新建本科院校师范专业的特点,更新办学理念,优化人才培养方案,搭建校内外师范技能素质培养平台,打破传统的教与学的组合形式与相对封闭的教学过程,探索师范教育专业开放式教学。 相似文献