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经济实用的小型动力装置试验台测试系统 总被引:1,自引:1,他引:0
航模、无人驾驶侦察机和靶机等飞机器经常采用带螺旋桨的活塞式小型动力装置。在各种飞行器的生产、科研、试飞及教学过程中,近切需要一种方便实用的小型台架测试系统。介绍了一种适用于航空小型动力装置台架试验的测试系统,该系统具有经济实用的特点;并介绍了系统的组成、硬件设计、软件设计及系统的应用。 相似文献
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在交通行业高速发展的今天,交通事故处理中的事故因为分析和责任明晰等事务越来越需要科技手段的支持;汽车黑匣子是可以实时采集并记录汽车行驶状态的电子仪器,提出了汽车黑匣子的总体设计方案,表采用三星ARM920T内核处理器S3C2410为核心,包括CAN总线模块、脉冲计数模块、A/D转换模块、GPIO接口、音频输出接口、RS232接口和USB接口等模块;实时接收汽车的行车速度、转速、灯光、车门、胎压、刹车、驻车及安全带等信息,进行处理和存储;并在实验的基础上,证明了所设计的硬件电路可以准确、可靠的工作. 相似文献
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飞机上的黑匣子可以记录飞机的各种飞行状态,利用它可以找到飞机失事的真正原因。同样,电脑上也可以装备一个“黑匣子”,它不但可以帮助我们了解遭遇的攻击类型,揭开入侵者的真面目,而且对系统修复也大有裨益。这个“黑匣子”就是——日志。 相似文献
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范学宜讲起她预备三年后拍摄的电影,那来自她童年的经历,她的叙述慢慢变成了大量的画面,那是在漠河,中苏边境的小城,大片的森林,大片的草地,冬天来时满眼都是白色,辽阔洁净,春天时大地回暖,又是让人看不厌的新绿。 相似文献
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Edward Wilding 《Computer Fraud & Security》2003,2003(1):4-6
A few months ago, a solicitor approached me on behalf of his client. The client suspected that an employee had stolen high value proprietary software, source code, customer databases, methodologies, and marketing and business development plans. The employee had been suspended and placed on what is euphemistically referred to as ‘gardening leave’. He had been ‘gardening’ for six weeks. The solicitor requested advice on how an investigation should proceed in order to prove, or disprove, these suspicions. His client was facing lengthy legal proceedings on the grounds of unfair dismissal. Significantly, neither the solicitor nor his client had any evidence that any information had actually been stolen other than rumours, office gossip and other hearsay. 相似文献
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对超煤体系统中常用的几种导航技术作了介绍,指出了其各自存在的不足之处,通过改进用户界面设计,利用VC++6.0实现了一种导航技术,来解决“迷路”问题和降低认知负荷,并给出了实现方法和实现过程。 相似文献
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全球领先的航空数据公司OAG发布了的9月份航班数和座位数统计数据显示,9月份全球航空公司共有240万架次航班,计划座位数为2,969亿个。每天,全球的飞机消耗超过1000万吨航空燃油,一架波音747客机每小时消耗15000升燃油,这相当于1500辆汽车每小时的燃料消耗;全球飞机燃料消耗占全球石油消耗平均为2.0%,而美国和中国分别达到了7.5%和7.3%,预计2020年交通用油占全球石油总消耗的62%以上……这所有的消耗比例,同样也是排放的比例。 相似文献
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This paper reviews the difficulties commonly experienced by non‐professional computer users and the remedies proposed for these problems. 相似文献
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《数码设计:surface》2012,(12):152-152
在以“未来”为主题的2012年大声展上,青年设计师DoolingJiang借服装“光蚀”表达了对未来的忧虑。用料低至极限的服装以概念化轮廓讲述着人类享用工业文明与高新科技的便利,其代价却是对自然资源的掠夺和对人类精神本源的侵蚀。 相似文献
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Concepts in search theory have developed since World War II. The study of search plans has found considerable interest among searchers due to its wide applications in our life. Searching for lost targets either located or moved is often a time-critical issue, especially when the target is very important . In many commercial and scientific missions at sea, it is of crucial importance to find lost targets underwater. We illustrate a technique known as coordinated search, that completely characterizes the search for a randomly located target on a plane. The idea is to avoid wasting time looking for a missing target. Two searchers or robots start from the center of a circle to search out a lost target, the first searcher looks for the target on the right side of the circular area, and the second one looks for it on the left side. The time taken to detect the target is obtained by assuming the target’s position has a symmetric distribution. The procedures to facilitate the detection of the target are presented as an algorithm and as a flowchart. An application demonstrates the applicability of this search technique and the associated decrease in search cost. Its effectiveness is illustrated by numerical results, which indicates considerable promise. 相似文献