检索结果-南通市图书馆

Exploring the reasons for the seasons using Google Earth, 3d models, and plots

International Journal of digital Earth 2017年第6期10卷 582-603页

作者： declan G.de Paor Mladen M.dordevic Paul Karabinos Stephen Burgin Filis Coba Steven J.Whitmeyer departments of Physics and Ocean Earthand Atmospheric SciencesOld Dominion UniversityNorfolkVAUSA department of Geology and Environmental Science James Madison UniversityHarrisonburgVAUSA department of Geosciences Williams CollegeWilliamstownMAUSA department of Curriculum and Instruction University of ArkansasFayettevilleARUSA department of Physics Old Dominion UniversityNorfolkVAUSA

Public understanding of climate and climate change is of broad societal ***,misconceptions regarding reasons for the seasons abound amongst students,teachers,and the public,many of whom believe that seasonality is caused by large variations in Earth’s distance from the *** may be reinforced by textbook illustrations that exaggerate eccentricity or show an inclined view of Earth’s near-circular *** explanations that omit multiple factors influencing seasons,that do not mesh with students’experiences,or that are erroneous,hinder scientifically valid *** show that many teachers share their students’misconceptions,and even when they understand basic concepts,teachers may fail to appreciate the range of factors contributing to seasonal change,or their relative *** have therefore developed a learning resource using Google Earth,a virtual globe with other useful,weather-and climate-related visualizations.A classroom test of 27 undergraduates in a public research university showed that 15 improved their test scores after the Google Earth-based laboratory class,whereas 5 *** correct answers rose from 4.7/10 to 6/10,giving a paired t-test value of *** using Google Earth,students are helped to segue to a heliocentric view.

关键词： Visualization geo-spatial science geobrowser earth observation 3-d representation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Analysis of the factors affecting LidAR dTM accuracy in a steep shrub area

引用

International Journal of digital Earth 2011年第6期4卷 521-538页

作者： J.Estornell L.A.Ruiz B.Vela´zquez-Martı´ T.Hermosilla departamento de Ingenierı´a Cartogra´fica Geodesia y Fotogrametrı´aUniversidad Polite´cnica de ValenciaCamino de Vera s/nValencia 46022Spain departamento de Ingenierı´a Rural y Agroalimentaria Universidad Polite´cnica de ValenciaValenciaSpain

The creation of a quality digital Terrain Model(dTM)is essential for representing and analyzing the Earth in a digital *** continuous improvements in the acquisition and the potential of airborne Light detection and Ranging(LidAR)data are increasing the range of applications of this technique to the study of the Earth *** aim of this study was to determine the optimal parameters for calculating a dTM by using an iterative algorithm to select minimum elevations from LidAR data in a steep mountain area with shrub *** parameters were:input data type,analysis window size,and height *** effects of slope,point density,and vegetation on dTM accuracy were also *** results showed that the lowest root mean square error(RMSE)was obtained with an analysis window size of 10 m,5 m,and 2.5 m,rasterized data as input data,and height thresholds equal to or greater than 1.5 *** parameters showed a RMSE of 0.19 *** terrain slope varied from 010%to 5060%,the RMSE increased by 0.11 *** RMSE decreased by 0.06 m when point density was increased from 4 to 8 points/m2,and increased by 0.05 m in dense vegetation areas.

关键词： LidAR digital earth digital Terrain Model(dTM) filtering 3-d representation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：