商务英语创新教学和能力的培养

创新教学是英语教育的永恒主题，商务英语创新教学和能力培养的理论指导、培养目标、课程设置、教学模式需要到教学实践去探索和构建。本文联系商务英语专业建设过程中的实际，探讨了商务英语专业中的创新教学及能力培养的能力结构、课程模式，并阐明创新教学组织实施的途径和方法。     

论谢灵运山水诗的玄理性抒情

谢灵运山水诗以闲逸清丽取胜,但也历来被批评为有“玄言尾巴”,实际上,谢灵运诗歌的“卒章玄思”是一种玄理性抒情,其主旨即在于通过山水景物的描写引起情感的抒发和玄理的体悟。本文从诗人身世经历、玄学思潮及诗歌发展过程三方面探讨谢诗玄理性抒情的成因,并评价其价值与意义。     

话语角色定位及其语言表现形式

话语角色定位必须注意自己的交际动机、目的,交际场合等等,其语言表现形式有称呼语、动词、口气和语体等多种.     

CCR5稳定表达的CHO细胞的构建

在人体内,CCR5与许多免疫疾病有关,CCR5有望成为众多药物的作用靶点。将ccr5基因与真核表达载体pBBS242构建成重组质粒pBBS242-ccr5,转染CHO细胞,并经潮霉素B筛选。流式细胞仪检测结果表明CCR5在CHO细胞得到了稳定表达。     

西宁及周边方言介词初探

本文初步考察了西宁及周边地区汉语方言的介词及其相关义的各种表达法。     

BP神经网络优化算法研究

为解决BP神经网络收敛速度慢和易陷入局部极小值的缺点,利用遗传算法(GA)和基因表达式编程(GEP)的各自特点,基于BP算法提出了两种改进算法:其一是GA-BP算法,即利用GA优化BP神经网络的权值和阈值;其二是GEP-BP算法,即利用GEP对BP网络进行调整,包括网络结构、权值和阈值。用样本数据进行了测试并与基本BP算法进行了比较,结果表明两种改进算法具有很强的可行性和高效性。     

实施有效的市场营销策略是旅行社经营成败的关键

旅行社应根据自身的实力和水平，选择合适的目标市场，根据目标市场的特点，推出有特色的旅游产品，制定恰当的产品价格，采取适当的营销策略和营销工具，扩大销售，争取较大的市场份额。     

Sensor-based physical activity,sedentary time,and reported cell phone screen time: A hierarchy of correlates in youth

BackgroundEvidence on correlates relies on subjective metrics and fails to include correlates across all levels of the ecologic model. We determined which correlates best predict sensor-based physical activity (PA), sedentary time (ST), and self-reported cell phone screen time (CST) in a large sample of youth, while considering a multiplicity of correlates.MethodsUsing sensor-based accelerometry, we assessed the PA and ST of 2179 youths. A χ² automatic interaction detection algorithm was used to hierarchize the correlates associated with too much ST (> 50th percentile), insufficient moderate-to-vigorous PA (MVPA) (<60 min/day), and prolonged CST (≥2 h/day).ResultsAmong youth 10–14 years old, the correlates for being inactive consisted of being a girl, not having sport facilities in the neighborhood, and not perceiving the neighborhood as a safe place, whereas in the youth 15–18 years old, the correlate for being inactive was not performing sports (9.7% chance of being active). The correlates for predicting high ST in the younger group was not performing sports (55.8% chance for high ST), and in the older group, the correlates were not owning a pet, perceiving the neighborhood as safe, and having inactive parents (63.7% chance for high ST). In the younger group, the greatest chances of having high CST were among those who were in the last elementary school years, who were girls, and who did not have friends in the neighborhood (73.1% chance for high CST), whereas in the older group, the greatest chance for having high CST was among those who were girls and had a TV in the bedroom (74.3% chance for high CST).ConclusionTo counteract ST and boost MVPA among youths, a specific focus on girls, the promotion of sport participation and facilities, neighborhood safety, and involvement of family must be prioritized.     

临沧师专数学教育专业培养目标定位与专业特色分析

文章分析了临沧师专数学教育专业所面临的现状,提出了该专业培养的学生应达到在思想品德、知识、能力、素质等四个方面的目标与要求,并指出了临沧师专该专业在七个方面的专业特色。     

现代文学教学中的表达能力培养

文学原本便具有实践性,现代文学更是注重社会功能,但是以往的文学教育忽视了实践能力的培养,导致了文学无用论观点的盛行,要在现代文学教学中培养学生的表达能力,大致有三种方式。第一,细致讲授作品的结构,理清作品的基本模式,指导学生提高写作能力;第二,指导学生把握诗歌的节奏和恰当地停顿,并体会诗歌中的复杂感情,通过朗诵诗歌提高语言表达能力;第三,指导学生排演话剧,揣摩语言中的细微情感变化,以此塑造学生良好的外在形象和提升他们的心理素质。