多媒体技术在《测量学》教学中的应用     

周铭  贾永华 《科技广场》2006,(5):98-100

随着计算机技术的发展,计算机辅助教学也有了长足的发展,并且变得越来越重要。本文阐述了多媒体课件的制作及其使用方法,结合多媒体课件CAI发展的现状,提出了个人的观点。  相似文献   

优势视角下大凉山特困儿童健康人格教育的培养途径     

张永华  付建红 《教育与教学研究》2017,31(3)

四川大凉山特困儿童的心理健康状况令人堪忧,人格发展出现异常。基于优势视角理论假设,摒弃对儿童问题和病理的关注,立足于人本主义的健康人格标准,借助毕摩信仰的力量,以灵魂建构为重心,着力培养特困儿童的人生观、世界观、进取心;遴选民族艺术为课程,以学校教学、校外实践、特长训练为平台,努力构建特困儿童乐观向上的生活态度和自信心;构筑"类家庭寄养"模式,重建家庭支持系统,着力培养特困儿童的自我意识、和谐人际、情感及意志能力;设置"三生教育"模块,以发现自我价值、发挥个人潜能、发展良好个性为目的,培养特困儿童的责任心和生活能力。促使特困儿童的人格健康发展,为适应社会生存奠定基础。  相似文献   

Study on the comprehensive combustion kinetics of MSW     

金余其  严建华  岑可法 《浙江大学学报(A卷英文版)》2004,5(3):283-289

The combustion behavior of typical components of MSW was examined with a thermal gravimetric analyzer (TGA). The experiments were done over the temperature range of room temperature to 1000℃ at a heating rate of 10 oC/min and in an oxidizing atmosphere. The results indicated that the entire weight loss process of each typical component of MSW consists of one to three distinct combustion stages. The combustion of typical components of MSW could be modeled by one to three independent reactions. The corresponding parameters of typical components of MSW such as activation energy, pre-exponential factor, and reaction order were determined. The calculated results using the comprehensive kinetic model composed of one to three independent and consecutive reactions, agreed well with experimental results.  相似文献   

Simulation study on radiative imaging of combustion flame in furnace     

LIU Dong WANG Fei HUANG Qun-xing YAN Jian-hua CHI Yong CEN Ke-fa 《浙江大学学报(A卷英文版)》2007,8(11):1853-1857

Radiative imaging of combustion flame in furnace of power plant plays an increasingly important role in combustion diagnosis. This paper presents a new method for calculating the radiative imaging of three-dimensional (3D) combustion flame based on Monte Carlo method and optical lens imaging. Numerical simulation case was used in this study. Radiative images were calculated and images obtained can not only present the energy distribution on the charge-coupled device (CCD) camera target plane but also reflect the energy distribution condition in the simulation furnace. Finally the relationships between volume ele- ments and energy shares were also discussed.  相似文献   

地铁车车体结构性能仿真分析     

许喆  李永华  盛自强  刘东亮 《安阳工学院学报》2021,20(4):31-34,51

为判断某型地铁客车车体结构设计的合理性,以车辆车体结构为研究对象,在Hypermesh软件中建立其有限元模型,根据EN 12663和GB/T 7928标准对其施加工况载荷,利用ANSYS软件对车体的静强度、刚度、模态和疲劳强度进行了有限元仿真分析.计算结果表明:车体在各工况条件下的刚度、静强度、模态和疲劳强度均满足设计要求,进而验证了车体结构设计的合理性,同时也为后续车体结构的改进和优化提供理论支撑.  相似文献   

论教育保护   总被引：1，自引：0，他引：1  

张永华 《教育研究》2003,(10)

教育保护是国家和学校依法实施的 ,对大中小学校在校学生的人身健康给予与其年龄相当的群体性保护。它是国家和学校的法定职责。教育保护具有从属性、合法性、有限性等法律特征。依法构建教育保护规范、依法履行教育保护职责 ,是预防和处理学生伤害事故 ,保护学生和学校合法权益 ,保障教育事业发展的重要环节  相似文献   

广东、江苏上市公司盈利能力比较     

岑成德 《广东轻工职业技术学院学报》2002,1(2):5-9

对广东省与江苏省的上市公司的盈利能力进行了统计比较分析，并用相关分析等方法对盈利能力与公司规模、成长性和现金流量间的关系进行了探索。文章结合实际问题的分析讨论了统计分析的一些方法问题。  相似文献   

TGF-β1 treated murine dendritic cells are maturation resistant and down-regulate Toll-like receptor 4 expression     

牟海波  林茂芳  岑洪  俞静  孟筱坚 《浙江大学学报(A卷英文版)》2004,5(10):1239-1244

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Polychlorinated dibenzo-p-dioxins and dibenzofurans in flue gas emissions from municipal solid waste incinerators in China     

Tong Chen  Yue-ling Gu  Jian-hua Yan  Xiao-dong Li  Sheng-yong Lu  Hui-fen Dai  Ke-fa Cen 《浙江大学学报(A卷英文版)》2008,9(9):1296-1303

Polychlorinated dibenzo-p-dioxins and furans （PCDD/Fs） emissions in flue gas from two types of municipal solid waste incinerators （MSWIs） most commonly used in China were investigated in this study. The selected incinerators include two grate-type MSWIs： MSWI-A （350 t/d） and MSWI-B 050 t/d）, and two fluidized bed MSWIs： MSWI-C （400 t/d） and MSWI-D （400 t/d）, which are all equipped with semi-dry lime scrubber and bag filter except MSWI-D equipped with cyclone and wet scrubber （WS） as air pollutant control device （APCD）. Results indicated that the emission concentration and the international toxic equivalents （I-TEQs） of the PCDD/Fs from the stacks were in the range of 1.210-10.273 ng/Nm^3 and 0.019-0.201 ng I-TEQ/Nm^3, respectively. They were greatly lower than the emission regulation standard of PCDD/Fs in China （1.0 ng I-TEQ/Nm^3）. However, only the PCDD/Fs emission level from MSWI-C was below 0.1 ng I-TEQ/Nm^3. Although the homologue profiles were distinct, the contributions of the 2,3,7,8-subsituted congeners to the total I-TEQ were similar among all the investigated MSWIs. Two major 2,3,7,8-substituted congeners, 2,3,4,7,8-PeCDF and 1,2,3,7,8-PeCDD, account for 47% and 9% （average values） of the total I-TEQ values, respectively. The correlation between PCDD/Fs levels and composition of flue gas was also discussed.  相似文献   

Pressure drop in a packed bed with sintered ore particles as applied to sinter coolers with a novel vertically arranged design for waste heat recovery     

Fu-you Tian  Lian-feng Huang  Li-wu Fan  Hong-liang Qian  Jia-xi Gu  Zi-tao Yu  Ya-cai Hu  Jian Ge  Ke-fa Cen 《浙江大学学报(A卷英文版)》2016,17(2):89-100

The pressure drop over a packed bed with sintered ore particles was studied experimentally. The sintered ore particles were characterized to determine their equivalent particle diameter, bed voidage, and sphericity. The pressure drop experiments were performed on unsorted and sieved particles with various size distributions for a superficial velocity up to 2.4 m/s, covering flow regimes from laminar to turbulent. It was shown that the Ergun equation underestimates the pressure drop for such highly irregular-shaped particles by about 40%. The measured modified friction factor was well correlated to a scaled Ergun equation, which was verified to be valid for the modified particle Reynolds number up to 12 000 toward design and optimization of vertically arranged sinter coolers for waste heat recovery.  相似文献