基于STAR-CCM+的汽车挡风玻璃除霜性能提升的仿真分析与研究     

胡忠文 《苏州市职业大学学报》2021,(1)

采用计算流体动力学的方法,利用STAR-CCM+软件对某一车型挡风玻璃除霜性能进行数值模拟分析。通过对出风口格栅进行调整,改变了暖风气流与挡风玻璃之间碰撞角的大小与碰撞点的位置,优化了挡风玻璃表面暖风气流的分布,提升了除霜性能,为汽车除霜风道的设计和改善车辆除霜性能提供了参考。  相似文献   

清代前期的嵩山文人群体初探     

《信阳师范学院学报(哲学社会科学版)》2019,(4):121-126

清代前期,嵩山一带出现了一个极有成就的文人群体。其成员前后相继,贯穿顺治至乾隆四世,历时一百余年,可考者达数十人。他们的创作在弘扬地域文化传统与文学精神的同时,又能跳出地域与传统的窠臼,具有一定的包容性与创新性,呈现出中原文化博大恢弘的气象。  相似文献   

Counseling With HEART: A Relationship Violence Prevention Program for College Students     

Danica G. Hays  Rebecca E. Michel  Hannah B. Bayne  Anita A. Neuer Colburn  Jayne Smith Myers 《Journal of College Counseling》2015,18(1):49-65

Relationship violence is a salient concern on college campuses today, and psychoeducational groups may be an appropriate prevention format. This article describes a study measuring the impact of college student participation in the HEART (Help End Abusive Relationships Today) program, a series of group sessions designed to increase knowledge and awareness of relationship violence. Findings indicated significant changes for group participants postintervention. Implications and recommendations for college counselors are discussed.  相似文献   

A multi-criteria approach for the group assessment of an academic course: A case study     

《Studies in Educational Evaluation》2015

The present paper aims at proposing a structured methodology to evaluate the results of an academic training course addressed to postgraduate students. The evaluation process intends to identify the efficacy of an education course by means of a comparison between the general objectives and the results expected by the students. Since the evaluated aspects by the students, detected by means of questionnaires, are both quantitative and qualitative, the proposed methodology is based on the analytic hierarchy process (AHP). In order to facilitate the evaluation process, answers have been modelled by means of linguistic variables. In particular, different evaluation scales have been used and each one is characterized by different levels associated to different fuzzy numbers.  相似文献   

基于系统动力学的客滚船航行安全仿真     

郭国平  徐元春  吴兵 《上海海事大学学报》2017,38(2):12-16

为保障客滚船航行安全,在分析客滚船航行安全影响因素的基础上,构建客滚船航行安全因果关系图,并运用Vensim-DSS构建客滚船航行安全仿真模型.对渤海上的某一客滚船的航行安全进行仿真,分析安全投入增加对客滚船航行安全水平的影响,得出结论:客滚船航行安全系统是一个复杂的动态系统,其航行风险主要是由人、货物、自然环境、交通环境、硬件设施和管理等6个因素交叉耦合导致的,其中人、货物和自然环境对客滚船的航行安全水平影响显著.这可为客滚船航行安全风险管理及防控方面的研究提供参考.  相似文献   

美国硅谷华人群体与中国国家软实力构建研究     

杨刚  王志章 《中国软科学》2010,(2)

美国硅谷是世界著名的高科技中心.经过半个多世纪的发展,如今这里汇聚了一万多家高科技公司和66万工程师,形成了一个高度发达的技术社会.在硅谷漫长的发展过程中,华人及华人群体功不可磨.他们展示出来的硬实力和软实力令人赞叹.本文以多元文化的视角比较详细的分析了硅谷华人群体软实力的现状、形态和特点,提出的一些建议和对策,这有利于我国在实施国家软实力战略中高度重视这一特殊群体的作用.  相似文献   

黑龙江省中青年体育锻炼行为现状与成因探析     

李启天  赵宇 《哈尔滨体育学院学报》2010,28(1):36-38

调查结果显示,黑龙江省中青年群体经常参与体育锻炼的人口偏低,锻炼以早上非正式体育场所最为集中,以散步、跑步、太极拳等简便易行项目为主。工作太累、没有余暇时间、缺少场地设施是影响其体育参与的主要因素。其成因主要体现在社区体育文化薄弱、经济收入水平低、体育锻炼行为习惯尚未形成等方面。  相似文献   

可行能力贫困:阅读困难群体的实质性特征     

王瑛琦 《图书情报工作》2016,60(10):11-16

[目的/意义] 旨在厘清"阅读困难群体"的研究对象,分析产生阅读困难问题的原因,提出解决这些人阅读困难问题的策略。[方法/过程] 引入经济学中分析贫困问题根源的"可行能力方法"分析阅读困难群体的问题,从人的能力发展的角度考察阅读困难产生的原因,从而提出解决策略。[结果/结论] 可行能力贫困是阅读困难群体的实质性特征,可行能力贫困产生的原因在于阅读困难群体的"内在性"阅读困难、"结构性"阅读困难以及"生命敏感期"的脆弱性。增强阅读困难群体选择的"能力"与"机会"是扩展可行能力的关键,也是未来图书馆解决阅读困难群体问题的方向。  相似文献   

质点组内力的功改变质心动能的条件     

田志川 《通化师范学院学报》2003,24(6):25-26

讨论了质点组内力的功是可以改变质心动能的，以及所满足的条件．  相似文献   

Timescales for exploratory tactical behaviour in football small-sided games     

Angel Ric  Robert Hristovski  Bruno Gonçalves  Lorena Torres  Jaime Sampaio  Carlota Torrents 《Journal of sports sciences》2016,34(18):1723-1730

The aim of this study was to identify the dynamics of tactical behaviour emerging on different timescales in football small-sided games and to quantify short- and long-term exploratory behaviour according to the number of opponents. Two teams of four professional male footballers played small-sided games against two different teams with a variable number of opponents (3, 5 and 7). Data were collected using a combination of systematic observation and a non-differential global positioning system (15 Hz). The temporal diversity and structural flexibility of the players were determined by calculating the dynamic overlap order parameter q, entropy and trapping strength. Analysis of the exploratory dynamics revealed two different timescales, forming a different metastable landscape of action for each constraint. Fast dynamics lasted on average a few seconds and consisted of changes in tactical patterns. The long timescale corresponded to the shared tasks of offence and defence lasting tens of seconds. The players’ tactical diversity decreased with an increasing number of opponents, especially in defence. Manipulating numerical imbalance is likely to promote changes in the diversity, unpredictability and flexibility of tactical solutions. The fact that the temporally nested structure of constraints shaped the emergence of tactical behaviour provides a new rationale for practice task design. The manipulation of numerical imbalance on the timescale of a few tens of seconds, on which the exploratory behaviour of players saturates, may help coaches to optimise the exploratory efficiency of the small-sided games.  相似文献