高速铁路缓和曲线行车动力性能对比分析

针对三次抛物线、半波正弦和一波正弦3种线型的铁路缓和曲线，以不同的列车运行速度变化规律建立了3种不同的分析工况,理论计算了车体横向加速度时变率。利用铁道车辆系统动力学数值仿真软件，建立了具有93个自由度的单节高速车模型，同时考虑轨道不平顺的影响，仿真计算了车体横向加速度时变率，对比分析了3种不同工况下缓和曲线上车体横向加速度时变率的变化情况。结果表明，在未考虑轨道不平顺时，列车以变化的速度运行，半波正弦更具优势，在车站两端加减速地段可以考虑采用半波正弦型缓和曲线，以提高旅客乘坐舒适度；轨道不平顺对高速行车     

高速公路平竖曲线组合行车舒适性研究

公路线型最终是以平面线型和纵断面线型组合成的三维立体线型而表现出来的，平纵面线型组合的好坏，直接影响到公路线型的优劣和行车的舒适性。选用横向加速度及其时变率作为评价指标，根据平曲线与竖曲线不同的重叠情形，建立不同工况的分析模型，考虑汽车速度变化的影响，推导出不同工况下的车体横向加速度及其时变率的一般计算公式，同时选用ADAMS/CAR软件进行整车仿真。通过对比分析，工况4的平曲线、竖曲线重叠设置为最优。     

英语中音位的变体

本文对英语音位变体进行了系统分析，特别是对一些前人尚未探讨过的特殊变体进行了归类说明。     

Effect of Target Position and Target Task on Judge Sensitivity to Felt Rapport

The present studies investigated the effects of target context on judge sensitivity to target felt rapport. The results suggest that judge sensitivity may be increased by: (a) positioning the target to the judge's left so that the judgment task may benefit from the specialization of the right hemisphere for processing nonverbal behavior, and (b) assigning targets to a task unconstrained by social norms that allows for more spontaneous and revealing target behavior. These results have major implications for the way that interpersonal sensitivity and rapport research is conducted and for understanding interpersonal perception in everyday life.     

Simulation-Based Confidence Intervals for Functions With Complicated Derivatives

In many scientific problems, the quantity of interest is a function of parameters that index the model, and confidence intervals are constructed by applying the delta method. However, when the function of interest has complicated derivatives, this standard approach is unattractive and alternative algorithms are required. This article discusses a simple simulation-based algorithm for estimating the variance of a transformation, and demonstrates its simplicity and accuracy by applying it to several statistical problems.     

英语爆破辅音[t][d]的发音特点对比研究

本文从声带活动情况、发音部位、发音方式等方面描述了[t][d]两个辅音音素的特点,以及它们出现在单词的不同位置、辅音簇和意群中出现的送气程度、不完全爆破、鼻腔爆破、舌侧爆破或旁流爆破、英式英语与美式英语中[t]发音的不同点,以及在单词中[t][d]的字母和字母组合表现形式相同时读音方面的差异。     

Coping with loneliness among the terminally ill

Loneliness is a universal phenomenon, and its pain is intensified by a diagnosis of a terminal illness. The present study is an investigation of the strategies used by patients with Multiple sclerosis (MS), by individuals diagnosed with cancer, and by the general population to cope with loneliness. Three hundred and twenty nine MS patients, 315 cancer patients, and 391 participants from the general population answered a 34-item questionnaire. Results indicated that with the exception of Reflection and acceptance, Distancing and denial, and Increased activity, the three groups cope with loneliness significantly differently.     

Sexual Life of Women with Multiple Sclerosis: A Qualitative Study

Objectives: To define the thoughts, emotions, experiences and perceptions of women with multiple sclerosis (MS) and to determine sexual, physical, and emotional effects of MS on patients. Methods: Twenty-one women were included into this qualitatively designed study. Results: Three baseline themes were defined as “uncertainty” arising from complaints due to numbness in extremities and loss of sense, balance or vision, “alterations in sexual life,” and “inability” as a result of deformities in marital status and gender role. Conclusion: Healthcare providers should evaluate MS patients meticulously as to sexual life and refer such patients to appropriate health centers.     

试析营销的理论发展及水平营销理论

现代意义的市场营销思想最初始于20世纪初.营销理论的研究从传统的经济学转入管理学,不仅标志着营销管理时代的开始,而且显示出营销理论的不断创新.从纵向的发展进程看,4P营销理论的产生奠定了市场营销的基础理论框架;4C营销理论的提出加强了营销传播的宣传力度;4R营销理论的主张更加突出了关系营销的重要意义……从横向的发展过程看,服务营销理论的产生为企业营销管理提供了思想和工具;全球营销思想的提出,强调了产品突破地方区域的一致性;整合营销理念的出现强化了包括营销战略、信息、传播渠道、产品与服务的整合;水平营销理论的建立则显示了横向思维的创造性;大市场营销、反向营销、社会营销、全方位营销等概念的出现,将市场营销的重要性提升到战略高度,并把市场营销扩展到一般的传播和价值定位等领域;城市营销、国家营销等观念的产生则将营销管理的视野应用于非商业领域…….