基于任务驱动教学法的专题地图编制实验课教学设计研究

针对专题地图编制课程内容抽象、制图方法多样、实践性强的特点,结合资源与环境科学专业课程教学大纲,以任务驱动教学模式为框架设计了专题地图编制实验课设计方案,并结合“线图元的编辑操作”这一案例对任务驱动法在实验课实施的5个环节进行了分析.实践表明,成功运用任务驱动教学法后,专题地图编制课程实验课的教学效果得到了显著提高.     

神木县土地利用变化的环境响应

以陕北神木县作为研究区,分析了土地利用结构互动变化和土地利用动态变化的空间特征,并对土地利用变化中的环境问题做了深入分析.结果表明:在土地利用变化中,土地沙化,水土流失,土壤污染和草场退化等环境问题较为严重,其中土地沙化和水土流失问题尤为突出.对土地利用变化的生态环境响应进行研究,可为人工调控提供科学依据,以促进区域经济和生态环境的可持续发展.     

基于R2V及ARCGIS的专题地图制作研究

本文以河北省为例,介绍了利用R2V和ARCGIS软件进行专题地图制作的步骤及方法。首先用R2V对地图中的省界市界进行矢量化,编辑,赋ID值,并在ARCGIS软件的支持下对地图进行投影变换和几何校正,最后生成研究区行政区划图。这种投资小,周期短的专题地图制作方法,对于GIS专业的学生来说,是一种非常有效的方法。     

基于ArcGIS制作中国基础底图的一般方法

地图是地理学的第二语言,但地图的获取与制作却困扰着众多的中学地理教师,如何制作符合教学实际需要的专题地图显得尤为重要。随着＂3S＂技术的普及与发展和地理数据的日益开放,中学地理教师制作专题地图成为可能,而专题地图的制作往往需要基础底图作为载体。本文主要以ArcGIS10.2软件为平台,介绍中国基础底图制作的一般方法。     

基于Mapinfo,CorelDRAW的专题地图设计与编制

叙述了综合运用Mapinfo,CorelDRAW进行专题地图制作的技术和方法,并进行了专题地图实例的设计与编制.Mapinfo具有较强的空间信息制图表达功能,但是它不能满足地图的编辑出版的要求,而矢量绘图软件CorelDRAW具有强大的编辑美化功能,将二者结合大大减轻了专题地图编制出版的劳动强度,提高了制图效率和制图质量,增强了地图的信息表达和可读性.     

基于遥感和GIS的亚热带山区土地利用/覆盖时空变化研究

在研究区运用遥感解译技术,监测土地利用变化状况,分析土地利用类型空间位置转换的时空变化特征.结果表明：研究区的土地利用类型以林地和草地为主,土地利用程度总体还比较低;研究时段内,土地利用时空变化较缓慢,正处于调整期.     

乌鲁木齐市城乡交错带土地利用与景观格局变化研究

文章运用城市地理学、景观生态学有关原理和方法,从土地利用类型入手,以乌鲁木齐城乡交错带内四个乡为着眼点,依据调查资料和实地考察从较微观层面上解析了乌鲁木齐城乡交错带土地利用变化特征,并对不同时段的土地景观格局进行了对比分析,从而得出了一些相关结论。     

《专题地图制图学》学习指导

本文阐述了专题地图制图学的作用。介绍了专题地图制图学的学习内容。重点、并展望了专题地图制图学的发展趋势。     

基于遥感影像的武汉地区土地利用变化分析

以武汉地区为研究对象,采用2006年和2013年两期遥感影像,利用遥感技术进行目视和计算机解译,分析了土地利用变化的空间特征。在研究区划分出城区、水体、植被、其他（主要是裸土地）共4个土地利用类型,据此建立起2006-2013年土地利用变化转移矩阵,并分析了研究区的土地利用变化幅度。结果表明,7年间武汉地区城区面积呈增长趋势,水体、植被呈减少趋势。进一步分析表明,该区土地利用变化的影响因素是多样的,驱动力主要为城市扩张、经济因素、宏观政策等。     

城乡结合部土地利用结构数量与空间变化分析——以柳州市为例

城乡结合部是城市化进程中的前沿阵地,土地利用结构变化要快于其他区域,要弄清楚这种变化是否向趋于合理的方向发展,具有实际的意义.本文以1996 ～ 2004年柳州市城乡结合部土地利用变更数据为基础,利用数学模型对该区域土地利用结构变化特征进行分析,探讨土地利用存在问题及解决对策.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.     

团图为数的图中的闭团贯数

Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.