Results 31 to 40 of about 1,173,914 (156)
Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19
Policy Studies Journal, Volume 54, Issue 3, August 2026.Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
wiley +1 more source
, 2021 本实用新型涉及无人机技术领域，特别涉及一种火炬传递无人机。包括旋翼无人机、火炬倾转机构、电池配重系统及火炬，其中旋翼无人机采用四旋翼构型，电池配重系统布置于旋翼无人机内，火炬倾转机构设置于旋翼无人机的外侧，火炬安装在火炬倾转机构上，并且通过火炬倾转机构的驱动实现倾转动作。本实用新型可实现无人机高载重比 ...
杨丽英 +6 more
core
Gaoya dianqi, 2013 无人机数据链系统是无人机系统的核心组成部分,为了验证其在超宽带电磁脉冲（UWB）场环境下的安全性及可靠性,在开阔场搭建了UWB电磁脉冲辐射系统。利用UWB电磁脉冲辐射系统对无人机数据链系统进行辐照效应实验。实验结果表明:单次触发的UWB辐射场不会对无人机数据链系统产生干扰;在连续触发条件下,无人机数据链系统会出现失锁现象,此效应与触发频率和辐照场强有关,且辐照场强与触发频率成反比关系。通过分析得知,无人机数据链路系统受UWB电磁脉冲辐射场干扰的能量耦合通道为"后门"耦合。
张涛, 陈亚洲, 田庆民, 程二威
doaj
智能科学与技术学报, 2020 边缘智能计算是指将用户节点产生的计算密集型任务卸载到计算能力更强的边缘服务器上进行处理，而基于无人机的边缘智能计算是指在此基础上结合智能无人机平台，利用该平台机动性强、易于部署的优点，更加快速灵活地为地面用户设备提供边缘计算服务。此外，无人机也可作为用户节点，将其计算密集型任务卸载到地面边缘服务器上来执行。针对无人机作为用户节点和边缘服务器两种不同场景，根据最小化能耗、最小化时延和最大化效用等不同的优化目标对当前基于无人机的边缘智能计算研究进行了分类和总结，并对下一步的研究方向进行了思考与展望。
董超, 沈赟, 屈毓锛
doaj
Do Criminalization Policies Impact Local Homelessness?
Policy Studies Journal, Volume 54, Issue 3, August 2026.ABSTRACT Local criminalization policies draw on the logic of deterrence to levy costs on individuals who engage in behaviors that are closely associated with various public concerns, such as those criminalizing behaviors associated with homelessness, thereby potentially reducing community‐level costs.
Hannah Lebovits, Andrew Sullivan
wiley +1 more source
, 2022 本发明涉及无人机技术领域，特别涉及一种火炬对接无人机。包括旋翼无人机、机械臂、视觉引导系统及视觉定位系统，其中机械臂设置于旋翼无人机机身的下方，机械臂用于与目标火炬对接；视觉引导系统设置于旋翼无人机机身的正前方，视觉引导系统用于远距离检测目标火炬的位置；视觉定位系统设置于旋翼无人机的旋翼下方，视觉定位系统用于近距离检测目标火炬的位置。本发明可实现无人机在视觉引导系统引导下的大范围全自主火炬对接 ...
杨丽英 +8 more
core +1 more source
Journal of Adolescence, Volume 98, Issue 5, Page 1715-1736, July 2026.ABSTRACT Introduction Following rapid iterations in media technologies, Chinese millennials (born between 1980 and 1995) find themselves in a paradoxical state where digital saturation exists alongside fatigue, making them central practitioners of digital minimalist behavior.
Chao Zhang, Yinze Hao, Jingwen Li
wiley +1 more source
, 2017 本发明属于无人海洋机器人领域，具体地说是一种无人海洋机器人操舵装置，包括舵承组件、舵叶及分别位于机器人载体内部的液压缸支座、后转轴、液压缸、前转轴、舵柄，液压缸支座安装在机器人载体内部，液压缸通过后转轴与液压缸支座连接；舵承组件穿过机器人载体上开设的舵承孔，并安装在机器人载体上；舵柄的一端通过前转轴与液压缸的活塞杆连接，另一端与舵承组件中的舵轴位于机器人载体内部的一端相连，舵叶安装在舵轴位于机器人载体外部的另一端连接。本发明应用平面二级杆组运动原理设计，结构设计紧凑简单、可靠性高，可承受双向轴向载荷 ...
郑荣 +4 more
core
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Light‐activated gas sensors hold significant potential in environmental monitoring and smart Internet of Things (IoT) owing to their advantage in room temperature operation. Nevertheless, due to a narrow light absorption range, high photocarrier recombination rate, and weak redox activity of the sensing material, the performance enhancement of
Jinyong Hu +5 more
wiley +1 more source