长三角大都市圈创新要素整合   总被引：1，自引：0，他引：1  

朱苑秋  谢富纪 《科学学与科学技术管理》2007,28(1):97-100

被称为世界第六大都市圈的长三角地区是我国经济实力最强的地区之一，要建立长三角创新体系，内部资源配置是关键。要提高长三角的区域创新能力，必须尽快实现区域内创新要素的统一市场体系。对大都市圈创新要素构成和长三角大都市圈创新要素现状进行了分析，提出了长三角大都市圈创新要素整合模型及整合对策。  相似文献   

Sampled-data control for time-delay systems   总被引：1，自引：0，他引：1  

Lisheng HuChuwang Cheng  Huihe Shao 《Journal of The Franklin Institute》2002,339(2):231-238

The sampled-data systems are hybrid ones involving continuous time and discrete time signals, which makes the traditional analysis and synthesis methodologies of time-delay systems unable to be directly used in the cases of hybrid systems with time-delay. The primary disadvantages of current design techniques of sampled-data control are their inabilities to deal effectively with time-delay and the model uncertainty. In this paper, we generalized the analysis methodology of time-delay systems to that of the hybrid systems with time-delay and uncertainty, which developed a design procedure of sampled-data control for time-delay systems. Asymptotic stability of the time-delay hybrid systems was developed. The time-delay dependent robust sampled-data control for the time-varying delay of an uncertain linear system was then discussed. The results were described as linear matrix inequalities, which can be solved using newly released LMITool.  相似文献   

跨国创业导向与创新能力关系研究:基于知识的视角     

刘帮成  王重鸣 《科学学与科学技术管理》2007,28(1):90-96

从组织知识观出发，通过对在华的167家跨国创业企业的调查发现，跨国创业导向对跨国创业企业的创新能力具有重要影响，而且还发现从母公司那里获得的知识显著影响着跨国创业导向与跨国创新能力之间的关系。  相似文献   

《教育思想大讨论》活动暨听淡江大学冯朝刚教授谈教学     

吕新颖 《教育教学论坛》2019,(17):43-44

教学方法在教学活动中起着举足轻重的作用。在前不久开展的《教育思想大讨论》活动中,请来了台湾淡江大学原副校长冯朝刚教授作报告,冯教授针对教学中的枯燥理论,采用简单教具现场演示和实事新闻视频等方法深入浅出的讲解,听后印象非常深刻,至今记忆犹新。本文从人才培养方案的制订、灵活运用教具、教学与科研的结合以及培养学生的动手能力等方面,结合冯教授的治学方针和教学方法,给出了相应建议。  相似文献   

An efficient parameter identification procedure for soft sensitive clays   总被引：1，自引：0，他引：1  

Liang Ye  Yin-fu Jin  Shui-long Shen  Ping-ping Sun  Cheng Zhou 《浙江大学学报(A卷英文版)》2016,17(1):76-88

The creep and destructuration characteristics of soft clay are always coupled under loading, making it difficult for engineers to determine these related parameters. This paper proposes a simple and efficient optimization procedure to identify both creep and destructuration parameters based on low cost experiments. For this purpose, a simplex algorithm (SA) with random samplings is adopted in the optimization. Conventional undrained triaxial tests are performed on Wenzhou clay. The newly developed creep model accounting for the destructuration is enhanced by anisotropy of elasticity and adopted to simulate tests. The optimal parameters are validated first by experimental measurements, and then by simulating other tests on the same clay. Finally, the proposed procedure is successfully applied to soft Shanghai clay. The results demonstrate that the proposed optimization procedure is efficient and reliable in identifying creep and destructuration related parameters.  相似文献   

Study on dynamic response of embedded long span corrugated steel culverts using scaled model shaking table tests and numerical analyses     

车爱兰  葛修润 《浙江大学学报(A卷英文版)》2006,7(3):430-435

INTRODUCTION On Jan. 17, 1995, the Hyogoken-nanbu earth-quake in Kobe, Japan, caused great destructive and damage to underground structures, such as subway structures, mountain tunnels, multipurpose under-ground ducts and other underground structures, which had previously been considered to be resistant to earthquake effects (JSCE, 1996; ECRHAED, 1998). This earthquake revealed that a number of critical issues should be added in the seismic design and seismic strengthening of undergr…  相似文献   

Particle Swarm Optimization based predictive control of Proton Exchange Membrane Fuel Cell （PEMFC）     

任远  曹广益  朱新坚 《浙江大学学报(A卷英文版)》2006,7(3):458-462

INTRODUCTION Fuel cells have attracted more attention in the last few years due to scarcity of the world energy source. The Proton Exchange Membrane Fuel Cell (PEMFC) is the focus of current development efforts because it is capable of higher power density and faster start-up than other fuel cells (Zhang et al., 2004). Research emphasis is on high power density with adequate energy conversion efficiency. PEMFC performance is related to many factors, among which electrolyte membrane …  相似文献   

Mean shift texture surface detection based on WT and COM feature image selection     

HAN Yan-fang SHI Peng-fei 《浙江大学学报(A卷英文版)》2006,7(6):969-975

INTRODUCTION Visual inspection plays a vital role in assuring the quality of industrial products. Texture surface detection aims at detecting defects such as cracks, stains, broken points, etc. on texture surfaces. Due to the repetitive changes of texture gray values and structures, traditional detection methods based on intensity or edge detection are invalid, which makes texture surface detection one of the most intriguing problems during the past decades. Generally, most of previous a…  相似文献   

“停课不停学”时期在线教学实践与疫后在线教学改革的思考——以上海交通大学为例     

沈宏兴  郝大魁  江婧婧 《现代教育技术》2020,(5):11-18

疫情防控期间,教育部要求在保障师生健康安全的基础上做好"停课不停教、停课不停学"工作,各地学校纷纷在短时间内紧急筹备,从确定教学方式到部署信息化设施再到教师培训试讲,开展了大规模线上教学。文章以上海交通大学为例,分析了学校在"停课不停学"时期对在线教学方式和在线教学平台的选择,介绍了学校在线教学的质量控制与反馈情况,并对疫后在线教学改革进行了思考,探讨如何将在线教学的技术优势保持下去,并利用信息技术推动教学方法创新和教学模式变革,以加快实现人才培养和立德树人的根本目标。  相似文献   

中国71所重点大学2000-2004年办学情况的定量分析     

Jie Yang 《Frontiers of Education in China》2007,2(3):430-446

Through a quantitative analysis on the school conditions of 71 key universities in the light of some measurable indicators, this paper concludes that all these universities have positively adapted themselves to the massification and diversification of higher education. Suggestions are as follows: (1) the construction of the quality assurance system of universities should be accelerated; (2) more focus should be put on human resources; (3) the education and management of postgraduates should be further enhanced; (4) the work load of faculty members should be reassessed. Translated from Fudan Jiaoyu Luntan 复旦教育论坛 (Fudan Education Forum), 2006, 16(3): 53–58  相似文献