隋炀帝开运河为巡游史事辨析

本文搜集史料对隋炀帝即帝位后大业元年连兴大役 ,在南运河开凿贯通后即率后宫百僚巡游江都的史事 ,进行了详尽的考证和政治分析。驳正了旧史旧小说所谓开河巡游为享乐游玩的说法。指出南巡促进了南北文化交流 ,促进了国家统一 ,其实质是以文化联络来巩固政治统一 ,具有重大的政治文化意义。但耗费太大 ,民众难以承受急政重役 ,而“帝王若竭生灵力 ,大业沙崩固不难”。     

大学英语教学与跨文化交际能力培养

在介绍文化与语言的关系以及跨文化交际和跨文化交际能力认识的基础上 ,探讨大学英语教学培养学生跨文化交际能力的必要性 ,提出跨文化交际能力培养应遵循的三原则     

文化与外语教学

长期以来,我国外语界一直十分重视对英语语言本身的研究,而对外语教学中涉及的文化因素及其影响重视不够,因而不利于对学生跨文化交际能力的培养.本文从文化差异的角度出发,针对我国英语学习者遇到的交流障碍进行归纳总结,指出了文化因素对外语教学及跨文化交际的影响作用,并提出了解决交流障碍的有效途径.     

昌黎县黄金海岸自然保护区的资源利用现状及产业化前景

本文根据昌黎县黄金海岸资源的特点、区域优势及社会和经济发展状况,提出了今后沿海经济产业化发展的方向.     

量子线中施主杂质的光致电离截面

本文就几种不同的线宽计算了准一维GaAs量子线中施主杂质的光致电离截面,同时也研究了磁场对光谱的影响。     

论经济学视野中公共价值的生成与实现

由于公共需要的存在,也就存在社会或者众多个人作为一个整体充当价值主体的价值,即公共价值.经济学视野中公共价值的核心是效率.为了实现这一价值,公共部门需要有效承担三大职能:资源配置职能、收入再分配职能和经济稳定与增长职能.     

Caesarean section by country of birth in New South Wales,Australia

ObjectiveTo determine rates of caesarean section by country of birth and by obstetric risks.MethodsWe analysed the New South Wales Perinatal Data Collection data of women giving birth between January 2013 and December 2015. Obstetric risk was classified using the Robson’s 10-group classification. Multilevel logistic regression with a random intercept was used to measure the variation in caesarean section rate between immigrants from different countries and between regional immigrant groups.ResultsWe analysed data from 283,256 women, of whom 90,750 had a caesarean section (32.0%). A total of 100,120 women were born overseas (35.3%), and 33,028 (33.0%) had a caesarean section. The caesarean section rate among women from South and Central Asia ranged from 32.6% for women from Pakistan to 47.3% for women from Bangladesh. For South East Asia, women from Cambodia had the lowest caesarean section rate (19.5%) and women from Indonesia had the highest rate (37.3%). The caesarean section rate for North Africa and the Middle East ranged from 28.0% for women from Syria to 50.1% for women from Iran. Robson groups that accounted for most of the caesarean sections were women who had previous caesarean section (36.5%); nulliparous women, induced or caesarean section before labour (26.2%); and nulliparous women, spontaneous labour (8.9%).ConclusionsThe caesarean section rate varied significantly between women from different countries of birth within the same region. Women from some countries of birth had the higher caesarean section rates in some Robson groups.     

Admitting women in active labour: A randomised controlled trial about the effects of protocol use on childbirth method and interventions

AimTo determine the effects of protocol of admitting women in active labour on childbirth method and interventions during labour and childbirth.MethodsThis single-blind randomised clinical trial was conducted in a public hospital in Mazandaran province (Iran) in 2017. Two hundred nulliparous low-risk women were randomly assigned into intervention and control groups. The participant women were admitted in the intervention group using the admission protocol and to the group control by staff midwives and doctors. The admission criteria of the protocol were: the presence of regular, painful contractions, the cervix at least four cm dilated and at least one of the following cues: cervix effaced, and spontaneous rupture of membranes, or “show”. The primary outcome measure was childbirth method. Data were analyzed in SPSS-22 using Mann–Whitney and Chi–square tests. The level of statistical significance was set as p < 0.05.FindingThere were significant differences between the intervention and control groups in the number of caesarian section (CS) (p < 0.001). Two groups had a statistically significant difference in amniotomy (p = 0.003), augmentation by oxytocin (p < 0.001), number of vaginal examinations (p < 0.001) and fundal pressure (p < 0.001).ConclusionsUsing a protocol for admission of low risk nulliparous women in active labour contributed to reduction of the primary caesarean section rate and interventions during childbirth. A risk assessment and using evidence informed guidelines in admission can contribute to reduce unsafe and harmful practices and support normalisation of birth. This is essential for demedicalisation and a useful strategy for reducing primary CS.     

高速非归零码数据的全光时钟恢复研究

采用一种新的时钟增强方案并配合双区折射率耦合激光器实现非归零码信号的全光时钟恢复,通过数学仿真研究了此时钟恢复系统在64 Gb/s非归零码系统中的性能表现。仿真结果表明,受益于时钟增强模块的高速特性,该系统完成高速非归零码信号时钟的全光恢复能达到较好的效果。