计算机程序设计语言的教学探索     

徐宏喆  聂影  黄征华  聂科峰 《教学研究(河北)》2004,27(2):181-185

随着市场经济的发展,社会对人才的实际工作能力和综合素质的要求越来越高,高等教育正面临着严峻的挑战。计算机程序设计语言是计算机的基础科目,在教学的过程中利用信息化技术,力求激发学生对课程的学习热情,培养学生动手实践的能力,创造性思维培养。  相似文献   

多媒体教学网络的功能及其发展趋势     

黄天良 《中国教育研究与创新》2005,2(6):18-19

本文首先介绍了多媒体教学网络的概念和种类，然后说明了多媒体教学网络的硬件和软件配置，阐述它的功能，最后论述了多媒体教学网络的发展趋势。  相似文献   

Optimal waveband identification for estimation of leaf area index of paddy rice     

Fu-min Wang  Jing-feng Huang  Qi-fa Zhou  Xiu-zhen Wang 《Journal of Zhejiang University. Science. B》2008,9(12):953-963

The objectives of the study were to select suitable wavebands for rice leaf area index (LAI) estimation using the data acquired over a whole growing season, and to test the efficiency of the selected wavebands by comparing them with feature positions of rice canopy spectra. In this study, the field experiment in 2002 growing season was conducted at the experimental farm of Zhejiang University, Hangzhou, China. Measurements of hyperspectral reflectance (350-2500 nm) and corresponding LAI were made for a paddy rice canopy throughout the growing season. And three methods were employed to identify the optimal wavebands for paddy rice LAI estimation: correlation coefficient-based method, vegetation index-based method, and stepwise regression method. This research selected 15 wavebands in the region of 350-2500 nm, which appeared to be the optimal wavebands for the paddy rice LAI estimation. Of the selected wavebands, the most frequently occurring wavebands were centered around 554, 675, 723, and 1633 nm. They were followed by 444, 524, 576, 594, 804, 849, 974, 1074, 1219, 1510, and 2194 nm. Most of them made physical sense and had their counterparts in spectral known feature positions, which indicates the promising potential of the 15 selected wavebands for the retrieval of paddy rice LAI.  相似文献   

民族地区高校大学英语网络教学中教师角色的思考     

黄东升 《佳木斯教育学院学报》2016,(4):257-258

大学英语网络教学模式作为时代发展的产物,广泛应用于大学英语教学中。本文分析了大学英语网络教学在民族地区高校实施的必然性,通过对民族地区高校大学英语网络教学存在问题的研究,对大学英语网络教学中教师的角色定位提出了思考。  相似文献   

论任弼时对陕甘宁边区经济建设的战略思考     

黄灵辉  阎锋 《安顺师范高等专科学校学报》2004,6(4):45-47

任弼时分管西北局、中财委期间,从全局的高度对陕甘宁边区的经济建设工作进行了系统的思考.他认为,在相对和平环境中的陕甘宁边区,经济建设是全部工作的最中心任务;在经济建设工作的安排上,应当抓住农业这是最主要环节,把握贸易金融财政这一重点环节,正确处理各种经济关系;边区的经济建设具有重要的战略意义.他对新民主主义经济建设规律的探索,有独到之处,至今仍有借鉴意义.  相似文献   

Mode transition process in a typical strut-based scramjet combustor based on a parametric study     

Lei Liao  Li Yan  Wei Huang  Lang-quan Li 《浙江大学学报(A卷英文版)》2018,19(6):431-451

The combustion performance of hydrogen fuel in a scramjet combustor has been a popular focus for scholars all over the world. In this study, the influence of the jet-to-crossflow pressure ratio on combustion performance in a scramjet combustor was investigated numerically, and the influence of a wall-mounted cavity was evaluated. The simulations were conducted using the Reynolds-averaged Navier-Stokes (RANS) equations coupled with the renormalization group (RNG) k-ε turbulence model and the single-step chemical reaction mechanism. This numerical approach was validated by comparing predicted results with published experimental shadowgraphs and velocity and temperature measurements. When the pressure of the wall-injector increases, the performance of the combustor decreases. At the same inflow condition, this may lead to a scram-to-ram mode transition. The cavity adopted in this study would prevent pre-combustion shock waves from pushing out of the isolator and help to stabilize the flow field, but it would decrease the mixing and combustion efficiencies.  相似文献   

在生物学教学中坚持非人类中心主义世界观与人类中心主义实践观教育     

黄勇 《生物学教学》2007,32(7):9-10

本文从世界观与实践观两个层面分析人类中心主义的是非,认为在中学生物学教学中,应该坚持非人类中心主义的世界观教育与人类中心主义的实践观教育,并努力做到两者的辩证统一,为生物学教学寻求一条脱离两难境地的出路。  相似文献   

智能车辆的交叉口数字信号灯检测与识别     

张宁  何铁军  高朝晖  黄卫 《东南大学学报》2008,24(4)

为了保证智能车辆在交叉口内的诱导行驶,提出了一种交叉口信号灯检测与识别方法．首先利用Hough变换检测交叉口内的停车线,然后采用颜色空间变换检测红、黄、绿三色信号灯,最后建立自联想存储器以识别切分出来的信号灯时间字符．通过20个实际交叉口场景测试数据验证,采用所提出的方法,停车线检测正确率达90％,信号灯检测正确率为85％,在信号灯字符正确分割出来的基础上,字符的识别率达97％．结果表明提出的方法能够十分有效地进行数字信号灯的检测,并具有足够的鲁棒性识别“破损”及带噪声的字符．  相似文献   

RLC串/并联谐振回路的谐振特性与典型参数分析     

黄进文 《保山师专学报》2006,25(5):78-82

RLC串/并联回路是各种复杂网络的基础,也是各种具有频率特性的电路网络的基本组成部份;全面了解RLC串/并联谐振回路各方面的特性对理解、学习及实践电路尤为重要,同时也是一个难点。  相似文献   

董桥语言与董桥风格     

黄晖 《金陵科技学院学报(社会科学版)》2003,18(2):32-35

董桥的散文多短章小品 ,但其行文翩翩然 ,逸致栩栩然 ,意蕴丰富 ,满纸烟霞 ,风格非常独特。董桥的语言是形成董桥风格的关键要素。他善喻善引 ,修辞极个性化。董桥又以其富有古典特征和文化特征的话语系统构成文章的庄重基调 ,并用幽默谐趣的语言去化解那份书生气 ,使文章清丽雅致又智慧洒脱。  相似文献