Public administration slogans include oral and written slogans which made by governments at all levels according to the policy or administration under the propagation tasks. T he purpose is to enhance propaganda effec...Public administration slogans include oral and written slogans which made by governments at all levels according to the policy or administration under the propagation tasks. T he purpose is to enhance propaganda effects by repeating the same concepts and objectives. While the democratic awareness in public discourses is keep growing,there are some surveys on the quality of public administration slogans. In order to improve the quality of public administration slogans,governments in Anhui Province should organize professionals and pay closely attention to the guidance of policy before they sort,edit,produce and release public administration slogans.展开更多
无人机配送作为1种新兴的运输模式,近年来受到广泛关注。然而,无人机续航能力有限、载重量不足以及复杂环境适应性不强等技术瓶颈,制约着其大规模应用。针对上述问题,梳理了无人机配送模式及关键技术的研究进展,为进一步提升无人机配送...无人机配送作为1种新兴的运输模式,近年来受到广泛关注。然而,无人机续航能力有限、载重量不足以及复杂环境适应性不强等技术瓶颈,制约着其大规模应用。针对上述问题,梳理了无人机配送模式及关键技术的研究进展,为进一步提升无人机配送效率和应用范围提供参考。在配送模式方面,无人机配送模式呈现多样化趋势,包括独立配送模式、无人机与车辆协同配送等多种模式;在多种配送模式对比的基础上,归纳了各模式的优化模型、适用场景与挑战及配送性能。在关键技术方面,从无人机性能提升到运输模式风险分析,研究人员开展了大量工作:①面向无人机长航程及高效补能需求,以无人机为对象开展了多能源融合、轻量化设计、载荷设计与优化、电池优化等方法研究,以换电站为对象开展了固定式与移动式充电站、自动换电站等技术研究;②为实现高精度定位与姿态估计,惯性导航系统、视觉里程计、即时定位及建图(simultaneous localization and mapping,SLAM)、多传感器融合等技术的融合成为趋势,并通过与深度学习、协同优化等算法,实现无人机自主导航、避障及多无人机协同效率的提升;③为增强无人机通信的实时性与安全性,5G通信、边缘计算、分布式架构、区块链等新兴技术成为热点;④在无人机配送的风险评估、故障处理、环境适应性提升及动态监控中,无人机行为识别、异常检测等技术大量使用。未来,面向配送无人机性能提升需求,应开展多源融合导航与智能协同避障研究,构建空天地一体化的通信网络与智能主动防御体系,增强配送无人机鲁棒性、环境适应性与实时监控能力;面向无人机配送运营需求,应开展多无人机配送模式协同与动态切换机制研究,提出多目标动态优化配送模型,突破无人机新能源应用瓶颈,发展充换电融合技术。展开更多
基金A Study on the Discourse Mode of Administrative Slogans in Anhui Province under the Post-modern Public Discourse Background(A2015025)Master’s degree program in Hefei college(Master of Chinese international education)A Study on the Language Standardization of Public Context and Mass Media-T aking Hefei as an Example(14JD06RW)
文摘Public administration slogans include oral and written slogans which made by governments at all levels according to the policy or administration under the propagation tasks. T he purpose is to enhance propaganda effects by repeating the same concepts and objectives. While the democratic awareness in public discourses is keep growing,there are some surveys on the quality of public administration slogans. In order to improve the quality of public administration slogans,governments in Anhui Province should organize professionals and pay closely attention to the guidance of policy before they sort,edit,produce and release public administration slogans.
文摘无人机配送作为1种新兴的运输模式,近年来受到广泛关注。然而,无人机续航能力有限、载重量不足以及复杂环境适应性不强等技术瓶颈,制约着其大规模应用。针对上述问题,梳理了无人机配送模式及关键技术的研究进展,为进一步提升无人机配送效率和应用范围提供参考。在配送模式方面,无人机配送模式呈现多样化趋势,包括独立配送模式、无人机与车辆协同配送等多种模式;在多种配送模式对比的基础上,归纳了各模式的优化模型、适用场景与挑战及配送性能。在关键技术方面,从无人机性能提升到运输模式风险分析,研究人员开展了大量工作:①面向无人机长航程及高效补能需求,以无人机为对象开展了多能源融合、轻量化设计、载荷设计与优化、电池优化等方法研究,以换电站为对象开展了固定式与移动式充电站、自动换电站等技术研究;②为实现高精度定位与姿态估计,惯性导航系统、视觉里程计、即时定位及建图(simultaneous localization and mapping,SLAM)、多传感器融合等技术的融合成为趋势,并通过与深度学习、协同优化等算法,实现无人机自主导航、避障及多无人机协同效率的提升;③为增强无人机通信的实时性与安全性,5G通信、边缘计算、分布式架构、区块链等新兴技术成为热点;④在无人机配送的风险评估、故障处理、环境适应性提升及动态监控中,无人机行为识别、异常检测等技术大量使用。未来,面向配送无人机性能提升需求,应开展多源融合导航与智能协同避障研究,构建空天地一体化的通信网络与智能主动防御体系,增强配送无人机鲁棒性、环境适应性与实时监控能力;面向无人机配送运营需求,应开展多无人机配送模式协同与动态切换机制研究,提出多目标动态优化配送模型,突破无人机新能源应用瓶颈,发展充换电融合技术。
