首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到11条相似文献,搜索用时 62 毫秒
1.
为评价液阻悬置系统对驾驶室振动特性响应的影响,基于车辆动力学理论及车轮-变形地面接触模型,建立了某振动压路机的非线性动力学模型。以驾驶员座椅垂向振动、驾驶室俯仰角和侧倾角加权加速度均方根值(RMS)为评价指标,基于Matlab/Simulink对所建整车非线性动力学模型进行数值仿真。对不同阻尼参数及布置方案的仿真分析表明,液阻悬置系统的低频高刚度特性对隔离低频振动传递和抑制驾驶室晃动有更好的效果。在转场工况下,相比传统橡胶隔振系统,采用液阻悬置系统可显著降低驾驶员座椅垂向振动及驾驶室俯仰和侧倾晃动,其加权加速度均方根值分别降低了20. 8%,24. 6%和57. 1%;相同条件下,车辆作业工况下上述振动响应分别降低了17. 9%,21. 4%和57. 4%。  相似文献   

2.
在分析入境旅游流研究进展的基础上,提出了旅游流通道便捷度概念,并以北京市入境旅游流为案例,对其区内、区外入境旅游流通道便捷度进行了分析。就结果来看,北京入境旅游流便捷度与旅游流长度、广度和对流省市经济关联度有密切关系。最后,从旅游交通方式、交通线路、交通站点和交通技术等方面,有针对性地提出了提升北京入境旅游流通道便捷度的建议。  相似文献   

3.
生物医药企业研发融资渠道研究   总被引:2,自引:0,他引:2  
目前,生物医药企业R&D融资渠道结构存在很多问题,本文分析了这些问题的成因,并从政府、外部信用机构和企业自身等三个角度分别提出解决融资渠道狭窄、融资规模不足的有力对策。  相似文献   

4.
从1998年取消国有银行信贷规模限制以来,我国开始进入间接货币调控时期。通过实证研究发现,货币政策的主要传导途径依然是信贷渠道,银行信贷对经济增长和物价稳定发挥着重要作用。货币渠道对物价水平也会产生一定的影响,但影响很小,货币渠道作用的发挥有赖于我国市场化改革的进一步推进和完善。  相似文献   

5.
基于信息渠道的乡村旅游消费行为分异研究   总被引:1,自引:0,他引:1  
乡村旅游消费行为在不同信息渠道中的分异状况,是一个值得关注的问题.通过对以抽样方法获得的长沙市居民乡村旅游消费行为的丰富基础数据,按照信息渠道分群统计分析,发现在出游方式、交通方式、停留时间、出游频次、住宿选择上信息渠道分异明显;在出游距离上表现出信息渠道的同一性;在花费水平上表现出信息渠道分异与同一性并存特色.  相似文献   

6.
环流是影响逆变器并联运行性能的一个重要因素,本文介绍了环流产生的原因及环流反馈控制原理,并基于此原理提出了一种双逆变器并联控制策略,并通过仿真验证了所提方法有效抑制环流。  相似文献   

7.
局部对应英汉网络语料是指因特网上以汉语为主,夹杂着数量不等英语的双语文本资源。该文探讨了局部对应英汉网络语料的概念、特征、以及利用局部对应英汉网络语料辅助翻译中的一些具体问题。  相似文献   

8.
北京大宝化妆品有限公司被美国强生公司并购,其中一个很重要的原因是大宝公司营销渠道存在严重问题,突出表现在:公司对销售渠道各环节监管不力;对代理商缺乏选择和管理;销售商窜货情况严重;终端的产品销售价格不统一,从而影响公司形象,降低了消费者对品牌的信任感。本文通过对美国强生公司的营销策略研究,为我国民族日化行业走出传统行销模式提供一些创新思路。  相似文献   

9.
中国特色词在对外宣传中占据了重要的地位,其英译质量的高低直接决定了能否达到对外宣传的目的。影响特色词英译的主要因素包括文化因素、语境因素、政治因素和受众与译者因素。文化因素由思维方式、传统文化和地域文化构成,完美跨越文化个性的鸿沟才能使特色词英译成为可能;语境因素决定特色词的涵义、感情色彩、语体特征和词义的广狭;政治因素在外宣中高度敏感,应慎之又慎;受众与译者因素取决于翻译活动中两大主要参与者——受众和译者的主观因素,包括受众期待和译者能力。只有克服翻译中的影响因素,才能达到良好的翻译效果,实现有效展现国家形象的目的。  相似文献   

10.
This study examines what drives customers' use of an online channel in a relational, multichannel environment. The authors propose a conceptual model of the determinants of online channel use and overall satisfaction with the service provider. They then conduct two large-scale studies in different service contexts to test the model. The results show that Web site design characteristics affect customer evaluations of online channel service quality and risk, which in turn drive online channel use. Customers' overall satisfaction with the service provider is determined by the service quality provided through both the online channel and the traditional channel. The results offer insights into the trade-offs that multichannel service providers face as they attempt to influence online channel use while maintaining or enhancing overall customer satisfaction. Mitzi M. Montoya-Weiss (m_mw@ncsu.edu) (Ph.D., Michigan State University) is a professor of marketing in the Department of Business Management at North Carolina State University. Her research interests include new product development and adoption, virtual teams, and knowledge management. Her research has appeared inMarketing Science, Management Science, Decision Sciences, theAcademy of Management Journal, theJournal of Product Innovation Management, and other scholarly journals. She has taught courses in marketing management, product and brand management, and management of technology. Glenn B. Voss (gvoss@ncsu.edu) (Ph.D., Texas A&M University) is an associate professor of marketing in the Department of Business Management at North Carolina State University. His research interests include relationship and services marketing, creativity and entrepreneurship, and retail pricing strategies. His research has appeared in theJournal of Marketing, Organization Science, theJournal of Retailing, Marketing Letters, theJournal of the Academy of Marketing Science, and other scholarly journal. He currently serves on the editorial review board of theJournal of the Academy of Marketing Science and has served as an ad hoc reviewer for theJournal of Marketing, theJournal of Marketing Research, theJournal of Retailing, and theJournal of Business Research. He has taught courses in marketing strategy, electronic marketing, and nonprofit management in MBA programs in the United States and Europe. Dhruv Grewal (dgrewal@babson.edu) (Ph.D., Virginia Polytechnic Institute) is the Toyota Chair in E-Commerce and Electronic Business in Babson College. His research and teaching interests focus on e-business, global marketing, value-based marketing strategies, and understanding the voice of the customer (market research). He is also co-editor of theJournal of Retailing. He has published more than 50 articles in outlets such as theJournal of Marketing, theJournal of Consumer Research, theJournal of Marketing Research, and theJournal of Retailing. He currently serves on the editorial review boards of theJournal of Marketing, theJournal of Retailing, theJournal of Public Policy & Marketing, and theJournal of Product and Brand Management.  相似文献   

11.
武陵源区旅游客流量时空变化及其特征分析研究   总被引:3,自引:0,他引:3  
旅游客流是旅游流研究的核心。主要根据相关数据。利用地理集中指数、季节集中指数等分析方法。从时间、空间的角度对武陵源建区以来旅游客流量的变化进行分析。并概括出了武陵源区旅游客流量时空变化特征。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号