MR智能阻尼器试验研究及径向基网络模型

制作了MR智能阻尼器，并在不同的位移，速度和电流输入情况下，对自制的MR智能阻尼器进行了性能试验研究，建立了MR智能阻尼器的径向基函数网络模型。结果表明：神经网络模型能精确的描述阻尼器正向和逆向工作特性，并且对液体沉降、液体磁响应时间、蓄能器刚度等因素的影响也能很好的解决。     

Definition and Application of Topological Index Based on Bond Connectivity

1　IntroductionSincethevalenceconnectivitytopologicalindexδvbasedonpeakatomswasputforwardbyRandic Kier[1] ,ithasbeengreatlyimprovedandwidelyusedinchemistry ,biology ,environmentalsciences ,pharmacology ,andsoon[2 -6] .Butitwasbasedonpeakatomstoconstructthemodel,lessconsiderationwasgiventotheconnectivityofatoms.Therefore ,thistopologicalindexisdifficulttobeappliedtoanorganicsysteminvolvingunsaturatedbondandhetero atom .Theoptimalmolecularconnectivitytopo logicalindexmustconsiderboththepeakato…     

Integrated energy-oriented cruising control of electric vehicle on highway with varying slopes considering battery aging

Eco-driving strategies for vehicles with conventional powertrains have been studied for years and attempt to reduce fuel consumption by optimizing the driving velocity profile. For electric vehicles(EVs) with regenerative braking, the speed profile with the best energy efficiency should be different from conventional vehicles. This paper proposes an energy-oriented cruising control strategy for EVs with a hierarchical structure to realize eco-cruising on highways with varying slopes. The upper layer plans the energy-optimized vehicle velocity, and the lower layer calculates the torque allocation between the front and rear axles.However, the resulting speed profile with varying velocity may cause a high charge and discharge rate of the battery, resulting in rapid battery fading. To extend the battery life, we make a tradeoff between the energy consumption and wear of the battery by formulating an optimal control problem, where driving comfort and travel time are also considered. An indirect optimal control method is implemented to derive the optimal control rule. As an extension, the control rule for avoiding rear-end collisions is presented and simulated for driving in the real world.     

思想路线的重新确立与邓小平的两大历史贡献

在"文革"结束后,邓小平重新确立了解放思想、实事求是的思想路线,这是党实事求是的思想路线在新时期的继承和发展。在这条正确的思想路线的指引下,邓小平做出了关系党和国家前途命运的两大历史性贡献:一是正确总结建国以来的历史经验,科学评价毛泽东的历史地位和毛泽东思想的指导意义;二是成功地找到了在中国建设社会主义的正确道路,创立了中国特色社会主义理论。     

基于神经网络的教师教学评估系统

利用神经网络对教师教学评估中所使用的权值进行非线性学习与调整，通过实验证明了该方法的有效性，并提出进一步改进的方案。     

自回转车刀的结构参数分析与研究

自回转车刀是一种结构先进的新型刀具。本文从理论上分析研究了自回转车刀的工作原理、结构参数的选择计算方法,并给出了较为实用的两种刀具结构。试验证明这种车刀在加工难加工材料方面具有很好的切削性能。     

循环图Cn〈1,k,n／2〉的连通度

一方面利用 Ｅｕｌｅｒ 定理证明了循环 Ｃｎ ＜ １ ,ｋ ,ｎ／２ ＞ 的连通度不超过其最小度５ ;另一方面,在 Ｃｎ ＜ １ ,ｋ ,ｎ／２ ＞ 中任意删去４ 个顶点后,证明剩余图仍然连通,从而说明其连通度不小于５ ．从以上两方面证明可知, Ｃｎ ＜ １ ,ｋ ,ｎ／２ ＞ 的连通度为５     

大众系列住宅建筑功能空间组织

分析了当前住宅建设中存在的缺点与不足,结合我国家庭构成特点,考虑城镇住房制度改革和安居工程要求,根据户型选择和设计原理,对大众系列户型的住宅建筑功能空间进行了合理组织的尝试,并设计出一套符合长远发展需要的小面积多功能住宅的组合方案．     

Experimental definition and its significance on the minimum safe distance of blown sand between the proposed Qinghai-Tibet Expressway and the existing Qinghai-Tibet Railway

Science China Technological Sciences - The Qinghai-Tibet Expressway is a major strategic project planned by China that will be built along the Qinghai-Tibet Engineering Corridor. At present,...     

网页设计制作的优化分析

就网页设计制作进行了优化分析,从设计理念、技术方法诸方面阐述网页制作中应注意的问题.