蒙语授课高等代数课程考试方案的设计与实施

"一考定成败",导致学生学习的目的只是为了考试过关,而不注重自身创新意识的养成、创新能力的发展和全面综合素质的提高。实施过程性评价,变期末一次闭卷考试为多阶段、多形式考核,有利于教师及时把握学生学习情况信息和教师自己的教学效果,充分发挥考试的诊断性功能。本文以呼伦贝尔学院蒙语授课高等代数课程为例探讨了考试方案的设计与实施。     

绘制地理接线图 提高配网运维水平

<正>四川省简阳供电局坛罐供电所利用卫星地图绘制10 kV地理接线图,查看台区图片、杆位明细表、低压网图等,提高了农网规划的效率和准确性,运行维护和抢修更加方便快捷。1主要做法首先通过互联网络进入谷歌地球程序,将视角高度调整到1 km(可根据自己对图像质量要求而定),对供电辖区内的图像进行截图(在截图时,在图上标出一段参考长度,作     

烟粉虱综合防治技术

烟粉虱是蔬菜生产中的重要害虫,近年来,该虫呈逐年加重发生趋势,对瓜菜的产量和质量构成了严重威胁,该虫群集于叶片背面吸食汁液,使叶片褪绿、变黄、萎蔫甚至枯死,它的分泌物能引起煤污病,通过取食可传染病毒,由于烟粉虱传播病毒使番茄黄化曲叶病毒病严重发生。由于日光温室、春棚、露地菜、秋延后蔬菜相连,实现了蔬菜周年生产,烟粉虱已无越冬、滞育现象,发生代数多,周年危害,体表蜡质,耐药性强,     

上海市绿化地图倍受欢迎

近几年来，随着上海绿化超越常规加速度发展，各类绿地面积大幅度增加，一批又一批设计新颖、景观优美、生态良好的公园、街头绿化、居住区绿地、单位绿化、保护绿地等不断涌现。为使广大市民和各地来客对上海市区公园、绿地的分布、具体位置和交通能有全面的了解，     

神交澜沧江

澜沧江发源于青海唐古拉山经西藏进入云南省境内,向南流经迪庆、丽江、大理、保山、临沧、思茅和西双版纳,然后流出国境经缅甸、泰国、老挝、柬埔寨与越南,最后注入太平洋。我写这篇文章前,在地图上想细细地看看澜沧江的流向时发现,不管是西藏、云南,还是中国、外国,上面提到的这些地方,我都去过。再想想,我去这些地方时,没有一次是为澜沧江而去,可她竟然在我那么多次的旅行生活中,一直流淌在我的身旁,不张扬、不放弃地让我认识了她和她的朋友们,可谓神交已久。 西双版纳的雾季　　　　最早见到它是1991年在西双版纳,…     

A review of stand basal area growth models

Growth and yield modeling has a long history in forestry. The methods of measuring the growth of stand basal area have evolved from those developed in the U.S.A. and Germany during the last century. Stand basal area modeling has progressed rapidly since the first widely used model was published by the U.S. Forest Service. Over the years, a variety of models have been developed for predicting the growth and yield of uneven/even-aged stands using stand-level approaches. The modeling methodology has not only moved from an empirical approach to a more ecological process-based approach but also accommodated a variety of techniques such as: 1) simultaneous equation methods, 2) difference models, 3) artificial neural network techniques, 4) linear/nonlinear regres-sion models, and 5) matrix models. Empirical models using statistical methods were developed to reproduce accurately and precisely field observations. In contrast, process models have a shorter history, developed originally as research and education tools with the aim of increasing the understanding of cause and effect relationships. Empirical and process models can be married into hybrid mod-els in which the shortcomings of both component approaches can, to some extent, be overcome. Algebraic difference forms of stand basal area models which consist of stand age, stand density and site quality can fully describe stand growth dynamics. This paper reviews the current literature regarding stand basal area models, discusses the basic types of models and their merits and outlines recent progress in modeling growth and dynamics of stand basal area. Future trends involving algebraic difference forms, good fitting variables and model types into stand basal area modeling strategies are discussed.     

校园实景地图的设计与实现

本文研究了以校园实景环境照片为对象,利用ArcSoft Panorama Maker软件的全景拼接技术、Photoshop的图像处理技术、Pano2的360度全景技术和Flash的动画技术而开发的基于互联网的校园实景地图的设计和实现方法,并实现了某一校园的实景地图。     

走进竖版《中华人民共和国地图》

你对咱们的国家了解多少呢?很多人会脱口而出:中国地大物博;中国是昂首挺立在世界东方的一只"雄鸡"……深深印在我们脑海中的这些看法对吗?再追问一句,我国的疆土是南北长,还是东西长呢?多数人都会毫不犹豫选择东西长这个选项。如果在你的面前有一幅新出版的竖版《中华人民共和国地图》,你会发现,以上这些观点和说法其实是不科学、不全面的。这期就让我们一起走进竖版《中华人民共和国地图》。     

柑橘红蜘蛛和蚜虫的防治

柑橘红蜘蛛是柑橘生产中的主要害虫,1年发生代数多,繁殖能力强,危害程度大。柑橘红蜘蛛成虫、若虫、幼虫均危害柑橘叶片、绿色枝梢及果实,但以叶片受害最重,受害叶片正面呈现灰白色小斑点。危害严重时常导致叶片脱落,严重影响树势和产量。     

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