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针对我国空中交通流量管理中出现的大规模航班延误情况,根据多个机场实际起飞和降落容量的约束,建立了一种考虑航班取消的多机场地面等待策略数学模型,并提出求解该模型的有效算法。在所提模型与算法的基础上,选择我国三大机场实际数据进行仿真。对比了取消航班与不取消航班两种情况结果,仿真结果验证了模型与方法的有效性与实用性,给出了最优排序的航班时刻表,从而支持了关键航班的运行,减少了航班总延误。 相似文献
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空中交通流量预测是空中交通管理领域的研究热点。针对空中交通流量的复杂性、非线性和不确定性,提出一种基于灰色神经网络算法进近空域内的空中交通流量预测方法。将灰色系统与人工神经网络相结合构成的灰色神经网络预测模型,优于单一的灰色预测方法和人工神经网络预测方法。 相似文献
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针对传统流量控制系统很难适应交通流量变化的问题,本文基于复杂网络设计出一种空中交通流量控制系统.首先模拟机场的节点、边以及边权等数据构建出空中交通流量控制复杂模型,利用迭代算法求解出具体取值范围,随后依据空中交通流量控制复杂模型构建基于Agent技术的流量控制系统,并且将其划分成为中央流量管理中心、区域流量管理中心以及三级流量管理中心,并给出不同阶段系统管理结构以及工作方式.经仿真实验结果验证,所设计系统能够实现对空中交通流量的有效控制,具有较高适用性. 相似文献
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空中交通管理是为解决空中交通拥挤而进行的系统化管理,文中介绍了空中交通流量管理的基本概念,并进行了流量管理方法的初探,同时提出了改善流量拥挤现状的环境和合理化建议。 相似文献
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针对现有动态通行能力的评估未考虑管制员认知负荷的不足,为了提高空中交通流量管理的准确性,构建了基于管制员认知负荷和改进蚁群算法的扇区动态通行能力评估模型。首先,构建了刻画扇区动态影响因素的动态飞行受限区模型,为了满足空中交通流量管理对速度的要求,改进了蚁群算法实现扇区动态管制引导路径规划;然后,提出了管制引导负荷强度的概念,扩展了管制员认知总负荷的概念,并将其应用于扇区动态通行能力评估模型的构建;最后,以三亚管制扇区为例,以15 min为间隔对未来2 h内9个时刻的扇区动态通行能力进行评估。实例验证结果表明所提评估模型计算得到的通行能力结果与实际运行结果相差1个架次,效果理想。 相似文献
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针对空中交通堵塞造成的资源浪费问题,提出了几种机场流量管理中地面调度算法。结合机场流量的实际状况,通过理论分析与仿真相结合,对比研究了几种调度算法的性能,并获得了一组有参考意义的数据,对机场实际调度策略具有较高的价值。 相似文献
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高晓明 《电子制作.电脑维护与应用》2014,(22)
经济的飞速发展,使人们在舒适度上升的同时,增强了对生活效率的要求。我国交通运输业由基础的铁路、公路等运输,不断向空中运输倾斜,越来越多的航班增加,使得空域资源变得越发紧张。建设我国空中交通协同流量管理系统已是必然趋势,空中交通协同流量管理模式,能实现空域的有效利用,也是发展航空运输业的必然要求。本文根据我国航空运输现状分析,阐述了空中交通协同流量管理的意义,并进行具体模式分析,以期对今后的流量管理工作提供信息参考。 相似文献
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S. Shaw 《Journal of Computer Assisted Learning》1993,9(2):93-99
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained. 相似文献
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European Community policy and the market 总被引:1,自引:0,他引:1
C. Lloyd 《Journal of Computer Assisted Learning》1993,9(2):86-91
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven. 相似文献
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融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。 相似文献
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张涛 《计算机测量与控制》2015,23(1):86-89
为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值. 相似文献
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Wayne O’Brien Author Vitae 《Journal of Systems and Software》2008,81(11):1997-2013
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them. 相似文献
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This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives. 相似文献
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潘丽 《自动化与仪器仪表》2014,(7):80-82
自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。 相似文献
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Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what
is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic
sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and
its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of
an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify
robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can
or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest.
This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January
31–February 2, 2008 相似文献
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Jacob Palme 《Software》1979,9(9):741-747
The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users. 相似文献