大学生人际交往自信水平及其调适     

谢章明  解登峰 《安庆师范学院学报(社会科学版)》2011,(4):115-118

人际交往自信是大学生心理健康教育的重要内容,是大学生社会心理素养的具体体现。高校应帮助大学生树立正确的交往价值观,提高人际交往策略水平,增强专业认同意识,遵循人际交往自信发展特点,促进心理健康和谐发展。  相似文献   

论高考命题质量控制机制的建设     

叶宏 《中国考试》2011,(7)

针对目前高考命题存在的不足,从正确把握命题的指导思想和原则,规范和完善考试大纲(说明),科学编制试题,合理设计试卷,加强试卷命制质量的分析与反馈,改革命题的管理等一系列命题环节入手,探讨建立命题质量的控制机制。  相似文献   

论矛盾同一性和斗争性的存在与实现     

谢年华 《哈尔滨学院学报》2011,32(8):1-6

矛盾的同一性和斗争性是矛盾的两种基本属性,二者之间是辩证统一的关系。对此学术界早已有了共识和定论,但对其辩证统一关系具体内容的理解,仍存在一定分歧。文章认为,绝大多数哲学教材和论著的理解中存在前后矛盾,正确的理解应是：二者的统一针对它们的存在,二者的对立针对它们的实现,并且它们的存在与实现也是辩证统一的。理解矛盾同一性和斗争性的存在与实现及其辩证关系,在当代具有重要的理论价值和实践意义。  相似文献   

WPT-based modal control on distributed structures with MRF-04K damper     

林伟  李忠献  张根明  黄鹏云 《天津大学学报(英文版)》2011,17(6):397-403

The magnetorheological (MR) fluid damper-based semiactive control systems have received considerable attention for protecting structures against natural hazards such as strong earthquakes and high winds. In this paper, a novel modal controller using wavelet packet transform (WPT) is proposed for the vibration control of distributed structures. In the proposed control system, the WPT method is utilized to decompose the acceleration measurement and select the modes containing most of the WPT energy component as the dominant modes. Then, a modal controller is designed to control the dominant modes and the optimal active control force is solved. Finally, Clipped-optimal con- trol law is adopted to determine the voltage applied to each MR damper. A Kalman-filter observer, which estimates the full controlled modal states from local accelerometer feedbacks, is designed for rendering the controller to be more applicable to distributed structures with a large number of degrees of freedom. A numerical example of a stadium roof structure installed with MRF-04K damper is presented. The effectiveness of the controller is evaluated under both Tianjin and El Centro earthquake excitations. The superior performance and adaptability of the controller for versatile loading conditions are demonstrated through the comparison with traditional truncated modal controller.  相似文献   

Tribology Performance and Adhesive Strength Evaluation of TiAlSiN Coating     

姜峰  谢鸿  融亦鸣  言兰 《天津大学学报(英文版)》2011,17(4):248-253

Scratch test and friction test were performed to evaluate the internal and external interface behaviors of TiAlSiN coating, respectively. The critical compressive and shearing stress of coating failure during scratch test were calculated and the values are 30.84 MPa and 4.98 MPa respectively. The average friction coefficients of TiAlSiN coating against 2Cr12Ni4Mo3VNbN steel are 0.70 (sliding speed 50 m/min), 0.63 (sliding speed 100 m/min), and 0.81 (sliding speed 150 m/min). The elements diffusion was analyzed by EDS. Al and Si element of coating material diffuse to the steel disc, except Ti element. The oxidation decreases with the increase of sliding speed, but the adhesion increases with the increase of sliding speed. More Al element diffuses to the steel disc at the high sliding speed, but the diffusion of Si element keeps almost constant at different sliding speeds.  相似文献   

Stochastic optimal control of first-passage failure for rectangular thin plate vibration model under gaussian white-noise excitations     

葛根  王洪礼 《天津大学学报(英文版)》2011,17(6):431-434

A rectangular thin plate vibration model subjected to inplane stochastic excitation is simplified to a quasinonintegrable Hamiltonian system with two degrees of freedom. Subsequently a one-dimensional Ito? stochastic differential equation for the system is obtained by applying the stochastic averaging method for quasi-nonintegrable Hamiltonian systems. The conditional reliability function and conditional probability density are both gained by solving the backward Kolmogorov equation numerically. Finally, a stochastic optimal control model is proposed and solved. The numerical results show the effectiveness of this method.  相似文献   

Numerical Model of Storm Surge and Inundation in Bohai Bay     

李大鸣  付庆军  解以扬  白玲 《天津大学学报(英文版)》2011,17(1):57-61

A two-dimensional numerical model of extratropical storm surge and inundation in Bohai Bay was built based on the unsteady flow Navier-Stokes equations. The model included two sections, one was for the simulation of storm surge tidal level and the other for the simulation of storm surge inundation in the coastal area. While simulating the storm surge tidal level, the alternating direction implicit (ADI) method was applied to dispersing and solving 2D storm surge equations. In the simulation of storm surge inundation, the 2D unsteady flow equations were dispersed and solved using the structureless grids of finite volume method (FVM). A coupling calculation mode of the process of inundation and storm surge tidal level variation was proposed, therefore the storm surge inundation process and area could be calculated while simulating and forecasting the process of storm surge tidal setup. Furthermore, an extratropical storm surge and inundation in Bohai Bay were simulated using this numerical model. Simulation results are in good agreement with the measured data, which shows that this numerical model provides a new method of simulating and forecasting storm surge and inundation in Bohai Bay.  相似文献   

Estimates of Central Moments for One Kind of Exponential-Type Operators     

宋占杰  杨振东  叶培新 《天津大学学报(英文版)》2011,17(2):85-88

In this paper,the explicit estimates of central moments for one kind of exponential-type operators are derived.The estimates play an essential role in studying the explicit approximation properties of this family of operators.Using the proposed method,the results of Ditzian and Totik in 1987,Guo and Qi in 2007,and Mahmudov in 2010 can be improved respectively.  相似文献   

“守住自己的精神家园”的红学研究——读胡文彬先生近作《感悟红楼》兼论目前红学的一种倾向     

叶勇  张兴德 《丹东师专学报》2011,(2):111-113

胡文彬先生的红学著作向以短小精粹、言之有物、贴近文本、贴近读者见长。其新著《感悟红楼》是这种研究方向的代表。面对目前存在的将《红楼梦》研究泛娱乐化、非文学化、非学术化、神秘化的倾向,我们应该提倡胡先生这种＂辅导读物＂式的研究。  相似文献   

“新区域主义”对我国欠发达地区发展的启示——兼论梅州市的发展     

谢正峰  程洁如 《嘉应学院学报》2011,29(10):38-42

"新区域主义"兴起于20世纪90年代,其产生背景、研究内容和特征都不同于以往的"旧区域主义",是一种新型的区域研究框架。"新区域主义"对我国欠发达地区的启示主要有:处理好发展过程中环境与经济的关系;注重城乡协调发展;注重区域创新能力的提高;建立多种不同尺度、不同类型的区域合作;整合自身的资源优势。最后,以梅州市为例进行了分析。  相似文献