Results 41 to 50 of about 15,457 (165)
Racial and ethnic disparities in obstetric anal sphincter injury: cross‐sectional study in the USA
Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 6, Page 778-789, June 2025.ABSTRACT Objectives Racial disparities in obstetric anal sphincter injury (OASI) are poorly understood; their investigation by parity, obstetric history and mode of delivery may provide insight into which individuals are at the greatest risk for OASI. We aimed to quantify the association of race and ethnicity with OASI, stratified by parity, obstetric ...
M. Rajasingham +5 more
wiley +1 more source
Gaoya dianqi, 2022 采用机器人技术进行10 kV高压断路器电气试验可克服人工试验存在的问题，有效提高试验效率和质量水平。文中研究了电气试验机器人接线装置（含接线插头和线仓）关键技术，针对最为复杂的回路电阻测试项目，研究并设计了一种集电压与电流接触于一体的弹片式新型接线插头，使得机器人一次接线即可完成回路电阻测试；根据机器人负载能力，研究了插头接触弹片与断路器断口梅花触头触指的接触压力与接触电阻关系，设计了接线插头接触弹片，满足接触电阻的要求。研究并设计了由接线插头定位基座和平面涡簧收放线装置构成的线仓机构 ...
王俊波 +6 more
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Research and Development of Simulation Service System with Cloud Manufacturing for Industrial Robot [PDF]
, 2017 伴随着工业信息化技术的不断提高，在自动化生产中工业机器人施展出的作用愈加明显。机器人仿真作为机器人性能和工作特点的有效研究工具，在机器人研究领域占据重要地位，为生产制造提供有效的参考依据。计算机技术与互联网技术的兴起，尤其是虚拟现实、云计算、大数据等新兴技术，为机器人仿真研究提供了新的思路。 本文在现有机器人仿真研究的基础上，基于虚拟现实与云制造技术，对机器人加工仿真、机器人示教、机器人在线选型等功能进行研究开发与集成，初步搭建了一个面向工业机器人的云制造仿真服务原型系统。主要研究内容如下： （1 ...
潘俊浩
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Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 624-632, May 2025.ABSTRACT Objectives Placental insufficiency contributes to many obstetric pathologies, but there is no bedside clinical tool to evaluate placental perfusion. We have developed a method to acquire multiple three‐dimensional (3D) power Doppler (PD) ultrasound (US) volumes of placental vasculature, with infrared camera tracking of the precise spatial ...
A. Xue +5 more
wiley +1 more source
Design and Implementation of Wireless Video Capture Car System Based on ARM11 [PDF]
, 2015 近年来随着嵌入式系统技术、无线通信技术的快速发展，嵌入式无线视频监控系统的相关应用受到了极大的关注，体积小、功耗低、性能稳定、移动方便、适应性强是视频监控与应用的发展趋势。在此背景下，设计一套基于嵌入式系统的移动式无线视频监控系统将会有广阔的应用前景。 本文针对嵌入式无线视频采集、视频压缩、视频传输等问题，基于ARM+Linux系统、H264视频压缩、RTP传输协议等技术，设计并实现了以遥控小车为载体的基于嵌入式Linux系统的无线视频采集系统，其主要研究内容如下： 1 ...
谢祥徐
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Effectiveness of Chatbots in Improving Language Learning: A Meta‐Analysis of Comparative Studies
International Journal of Applied Linguistics, Volume 35, Issue 2, Page 834-851, May 2025.ABSTRACT The development of artificial intelligence has presented new opportunities and challenges for language education. Using artificial intelligence techniques such as automatic speech recognition and generative artificial intelligence, conversational chatbots have been integrated into language learning and teaching. However, findings of the impact
Boning Lyu, Chun Lai, Jianing Guo
wiley +1 more source
Policy &Internet, Volume 17, Issue 1, March 2025.ABSTRACT This study examines how government responses to citizen inquiries on governmental social media enhance policy communication campaigns for observers. Drawing upon theories of masspersonal communication and artificial intelligence (AI)‐mediated communication, it investigates the effects of replying agents, inquiry tones, and institutional trust ...
Xinzhi Zhang, Fangcao Lu
wiley +1 more source
, 2018 针对机器人末端抓持工件时,无法利用生成在工件上的轮廓点进行去毛边加工的问题,对机器人末端抓持工件在工具固定的情况下去毛边加工的方法进行研究,提出在确定工件加工轮廓与机器人末端TCP的固定位姿关系之后,将固定在机器人工作空间中的工具上一点设置为虚拟TCP,以该虚拟TCP为基准,将附着于机器人末端工件上的加工轮廓点映射成机器人工作空间中的虚拟轨迹点的方法。在给出工件上轨迹点与虚拟轨迹点的映射关系,完成虚拟TCP以及机器人末端TCP设置的基础上,在Fanuc机器人仿真软件Robo ...
席文明 +4 more
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Combating infections under siege: Healthcare challenges amidst the military assault in Gaza
World Medical &Health Policy, Volume 17, Issue 1, Page 188-213, March 2025.Abstract The ongoing Israeli military assault on Gaza has caused a devastating collapse of healthcare infrastructure, resulting in an unprecedented surge in infectious diseases. The destruction of sanitation systems, restrictions on medical supplies, and displacement of civilians have created an environment conducive to the rapid spread of waterborne ...
Bilal Irfan +24 more
wiley +1 more source
Dianci bileiqi, 2017 视觉伺服研究是绝缘子水冲洗机器人研究的重要内容,其研究成果用于机器人自动瞄准绝缘子。水冲洗机器人采用基于图像的视觉伺服控制方案,对冲洗机器人的图像雅克比矩阵进行计算,设计基于机器人位置参数和绝缘子高度信息获取图像深度的方法,最后基于Robotics Tool-box和Visual Servoing Toolbox工具箱对冲洗机器人视觉控制方案进行建模、仿真,结果表明,基于图像的机器人视觉伺服系统能够实现对绝缘子瞄准功能。
吴文海, 姚波, 于兰英, 王国志
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