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简要介绍了DAT/EM系统的主要部件和功能,结合HK09-0042-ST Lucia项目对DAT/EM系统内业作业的步骤流程进行了分析和归纳,并对DAT/EM系统与其他系统对比研究,由此总结了DAT/EM系统的性能优点。 相似文献
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全站仪和GPS下载的数据,其中大部分都是非DAT数据,而利用全站仪和GPS在野外所采集的数据进行计算机数字制图或测量控制网观测数据的处理时,需要DAT数据文件。在这种情况下,将所下载的非DAT数据文件转换成DAT数据文件,就显得较为重要。针对下载的非DAT格式的数据,利用WORD,EXCEL,CAD等大众化普及软件的某些功能,生成计算机数字制图或测量控制时可以被识别的DAT格式数据文件。该方法操作简单,易于掌握,避免用户开发或编写更复杂的软件和程序。从而达到事半功倍的效果。 相似文献
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面向对象(OO)分析模型的核心是对象,如何找出这些对象是OO技术所面临的中心挑战。对标识对象策略的探讨,有助于对OO技术的深入理解和掌握。本文结合需求文档分析工具的对象标识,对相关的问题进行了讨论。 相似文献
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介绍了一种新型的水下航行载体实航振动和噪声测量装置,它包含一个多通道、连续高速采样、大存储容量的DAT数字磁带记录仪。这套装置体积小,安装在水下航行载体内部,用可充电电池供电,自成独立系统。它不仅能测量实航全过程的振动和噪声,还能记录其他瞬态或稳态参数,具有很大的通用性。 相似文献
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L. Cohen R. Vergara A. Moreno J. L. Berna 《Journal of the American Oil Chemists' Society》1995,72(1):157-159
Commercial linear alkylbenzene components, such as linear alkylbenzene homologs and isomers, branched alkylbenzene and dialkyltetralins, have been synthesized and isolated. Equimolar mixtures have been prepared, and their relative velocities during the sulfonation reaction have been established. 相似文献
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Attention-deficit/hyperactivity disorder (ADHD) is characterized by poor attention to detail, poor attention maintenance, and variability throughout task performance. The authors used a quantitative trait loci approach to assess the association between the dopamine transporter (DAT1) high-risk genotype, cognitive performance (visual search and vigilance), and ADHD symptoms in a community sample of boys 6-11 years of age. The potential confounding effects of IQ and chronological age were also investigated. Results demonstrate that accuracy in target detection, not speed, distinguishes poor attenders from good attenders. The authors speculate that the measure of performance (e.g., time and false alarms) may be critical in detecting attentional weaknesses. In contrast, DAT1 gene, known to be associated with the behavioral symptoms of ADHD, was unrelated to visual search or vigilance performance, although it was related to ADHD symptoms. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献