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随着WIFI和智能移动终端的普及,移动学习正在快速地发展。本文主要介绍了智能移动终端上的测绘专业知识测试系统的总体设计和部分实体E-R图,从系统登录与注册模块、个人中心模块、教师编辑试题模块、编辑测试模块、学生自测模块、学生考试模块等方面阐述了测绘专业知识系统的设计与实现,弥补了测绘专业在移动学习应用上的短缺状况。 相似文献
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本文着重介绍了三线阵CCD影像摄影测量处理过程中,数字测图系统的构成及主要模块的功能,并利用航空校飞所获取的影像数据和厕幅式航天影像模拟三线阵CCD影像数据对软件系统进行了测试。 相似文献
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在对海域物权评价方法和信息需求分析的基础上,数据中心集成开发平台可为它提供一系列便利:其中,数据仓库可对海洋数据进行有效管理,设计器用来搭建系统界面,功能仓库构建系统的功能,系统所需的扩展功能可以通过工具插件接口开发相应插件嵌入到系统的框架中得以使用。整个系统分为4个功能模块,分别是信息录入模块、信息查询模块、宗海管理模块和宗海评估模块。该系统的开发有助于为海洋管理提供决策支持。 相似文献
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曹先革杨金玲刘妍梁欣 《现代测绘》2015,(6):60-64
基于移动学习的理念,以HTML+CSS+Java Script为前端,PHP+My SQL+Apache作为后台,Windows作为运载平台,对测绘专业知识测试系统进行了设计,并详细阐述了填空题、单选题、学生信息和测试信息等系统数据表的设计,最后对系统的主要模块如登陆与注册模块、个人中心模块、教师编辑试题模块、编辑测试模块、学生自测模块的实现进行详细介绍。 相似文献
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测绘行业近几年发生了巨大的变化 ,传统的测量方法大多被数字化手段所代替 ,然而部分测绘仪检部门在处理测距仪器检定数据时有的采用自行编制的功能不甚完备的程序进行计算。针对这种情况 ,作者开发了长度计量仪器测距指标处理系统 (KRA) ,该系统能较为全面地满足光电测量仪器检测数据的后期处理。本文就该系统的开发和运用作了详细阐述。 相似文献
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测绘仪器的开发与创新不仅是当前测绘信息化阶段工程本科人才培养的重要环节,也是工程教育认证中解决复杂工程问题的基本要求。仪器系统综合设计训练能够有效锻炼工科大学生解决复杂工程问题的能力。本文在明确专业认证中复杂工程问题的基本内涵后,介绍了仪器系统综合训练实验内容的设计方法,并梳理项目设计任务与复杂工程问题间的关系,同时结合课程反馈优化实践课程设置,将解决复杂工程问题的能力培养落到实处,为测绘类、仪器类相关专业培养方案的制订提供参考,使其符合工程教育认证标准要求。 相似文献
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Site procedures, instrumentation, analytical methods and accuracies achieved are described for the measurement of the deformation of a military steel bridge under load in a test gantry. Some remarks concerning the advantages and disadvantages of photogrammetry as a method of industrial measurement are made. 相似文献
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Oscar Martinez-Rubi Maurice de Kleijn Stefan Verhoeven Niels Drost Jisk Attema Maarten van Meersbergen 《International Journal of Digital Earth》2016,9(12):1135-1152
This article discusses the use of 3D technologies in digital earth applications (DEAs) to study complex sites. These are large areas containing objects with heterogeneous shapes and semantic information. The study proposes that DEAs should be modular, have multi-tier architectures, and be developed as Free and Open Source Software if possible. In DEAs requiring high reliability in the 3D measurements, point clouds are proposed as basis for the 3D Digital digital earth representation. For the development of DEAs, we propose to follow a workflow with four components: data acquisition and processing, data management, data analysis and data visualization. For every component, technological challenges of using 3D technologies are identified and solutions applied for a case study are presented. The case study is a modular 3D DEA developed for the archaeological project Mapping the Via Appia. The 3D DEA allows archaeologists to virtually analyze a complex study area. 相似文献
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Marc P. Armstrong 《制图学和地理信息科学》2018,45(5):438-455
Area measurements play a prominent role in many types of geographical and historical analyses. The accuracy and precision of such measurements, however, are dependent on a host of input factors, including the type of instrumentation used as well as the scale and projection of the source map and its level of cartographic generalization. As a consequence of variability in these inputs, published area measures change over time. This paper reviews the record of land area measurements for counties published by the US Census Bureau between 1880 and 2000, documents the major changes in measurement instrumentation and procedures employed, and analyzes patterns of the greatest variability in reported values. Two states are used as case studies (Iowa and Maine). The results suggest that the greatest variability occurs in those areas with irregular borders, thus reflecting the interaction of the source maps with human measurement error and the encoding capabilities of the area measurement instruments. The observations also indicate that variability in area measurements for counties has decreased over time. 相似文献
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对一种混沌图像密码的选择明文攻击 总被引:2,自引:0,他引:2
对基于广义猫映射和加法模运算的混沌密码进行了安全性分析,指出了该密码设计上的几处瑕疵。在选择明文攻击下,该密码系统在1轮加密时不够安全,仅选择3幅明文图像就可破译。讨论了该密码在多轮加密时待解决的问题以及可能采取的改进措施。 相似文献
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李家然 《测绘与空间地理信息》2009,32(3):57-59,62
论述了河北省高速公路管理信息系统的基本网络结构,以及主要的业务子系统,从总体上对这种系统的功能进行了探讨,对于促进高速公路高效运行管理具有重要的示范意义. 相似文献
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D. M. Loescher 《The Photogrammetric Record》1996,15(87):389-394
The features and applications of the low cost analytical plotters manufactured by ADAM Technology are described. The ADAM Technology products (the small format MPS-2 analytical stereoplotter, analytical conversions for Kern PG2 and Wild B8 analogue stereoplotter and the 230mm format Promap modular system) are discussed. 相似文献
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K. Ya. Kondrat'yev 《地理信息系统科学与遥感》2013,50(3):244-259
A senior Russian remote sensing specialist describes plans for the development of the Earth Observation System (EOS), providing interesting insights into Russian interest and expertise in satellite-based global monitoring of the environment. The system of scientific instrumentation developed for earth resource monitoring satellites and stages in the implementation of an observation program system are described. Changes in the implementation of the program, reflecting new priorities brought about by budgetary constraints, also are considered. 相似文献