排序方式: 共有113条查询结果,搜索用时 540 毫秒
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提出一种基于VBA宏命令,利用公交IC卡和GPS数据来实现各站点刷卡上车人数统计的方法.根据两种数据的特点,以Excel为主要工作平台,通过VBA程序快速地对两者数据进行筛选和利用,逐步实现各站点公交车到站时间的匹配和各站点上车人数的统计.最后利用此方法对丹东市公交线路的往返各站点上车人数进行统计.与传统的公交随车调查结果对比,通过该方法得到的各站点上车人数数据较为准确,可作为传统方法的替代. 相似文献
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针对手工计算审核砂船图纸中的《稳性计算书》过程繁琐、容易出错的问题,研究用Excel解决砂船稳性衡准自动化计算的方法,提高砂船图纸审核的工作效率. 相似文献
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刘宇苹 《武汉船舶职业技术学院学报》2011,10(2):47-49
随着国内公司企业信息化的普及,电子文档在企业内部网和电子政务网中使用广泛,很多机密文件都以电子文档的形式分发和存储。本文针对Word文档的特点,提出了基于文本水印的信息隐藏技术,并对其鲁棒性、安全性及水印算法执行的时间等特性进行了研究。 相似文献
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张远双 《武汉船舶职业技术学院学报》2007,6(4):12-15
本文介绍了三次样条函数系数Ci的求解方法,列举了用Excel的函数功能和规划求解工具的求解过程以及用AutoCAD VBA编写的相关程序。 相似文献
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应用ACAD VBA语言编制批量绘制隧道横断面软件,实践应用证明程序的正确性、可靠性和实用性。 相似文献
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Auto CAD已在桥梁设计、结构分析辅助建模中得到广泛应用,介绍了AutoCAD图形对象的定义和创建方法,利用VBA程序开发了集设计、计算与制图于一体的拱桥设计程序,最后简要介绍VBA所需环境及操作方法。 相似文献
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Sze‐Wei Chang 《先进运输杂志》2015,49(1):1-9
The runway orientation must satisfy the operational requirements of aircraft for landing and takeoff. Actually, the runway orientation is the result of compromises between the airport usability (wind coverage) and additional factors, such as available land, existing obstructions, topographic difficulties, flight path interference among runways and airports, noise pollution, and other environmental impacts. Therefore, the solution of a combination of acceptable runway orientations, which avoids excessive crosswinds at least 95% of the time, as well as the optimal orientation solution, is essential to conduct those compromises in the runway orientation analysis. The objective of this paper is to develop a computer model, named the optimization of multiple runway orientations model, which is capable of simultaneously providing a combination of acceptable runway orientations, changing the allowable crosswind limit flexibly, and determining the optimal orientations of multiple runway configurations. Instead of visual estimation or geometric computation, this paper presents an analytical method for wind coverage analysis. The model is mainly running in spreadsheet and Visual Basic for Applications (VBA). The numerical example and comparison show that the optimization of multiple runway orientations model is competitively accurate and convenient in comparison with previous ones. This paper presents an up‐to‐date model for the optimization of multiple runway orientations. By combining it with the geographic information system obstructions model, it can become an essential element of a future model for airport development cost minimization that combines airfield land use, earthwork volume, and cost estimation modules. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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