汇川H2U系列PLC之间RS-485通信的实现     

尚丽  叶国平 《苏州市职业大学学报》2020,(2):15-21

主要研究了汇川公司H2U可编程控制器(PLC)的通信技术,实现了两个H2U系列PLC之间基于RS-485的通信,并详细介绍了PLC之间通信的硬件连接方式、通信串口参数配置、触摸屏画面的设计以及程序实现。所讨论的方法已在采用H2U PLC及辅助设备组建的"运动控制系统"课程的教学实验平台上进行了验证,可以拓展应用于多台H2U PLC之间以及其他设备与H2U PLC之间的RS-485通信实现,对工程应用具有一定的借鉴意义。  相似文献   

Accommodating Translational Research     

《Journal of Applied Communication Research》2008,36(2):121-127

This is an article in a series illustrating the way scholars in communication have pursued translating their research into practice. The translational nature of communication accommodation theory and examples of its application are the focus of this contribution.  相似文献   

Exploring Developmental Appropriateness of Multitouch Tables in Prekindergarten: A Video Analysis     

Jennifer Ward  Stephanie Branson  Megan D. Cross  Ilene R. Berson 《Journal of Research on Technology in Education》2016,48(3):227-238

This study explored how developmentally appropriate practices influenced the affordances of a multitouch surface in an early childhood classroom. Children, ages 4 to 5 years old, were videotaped while engaged in a storymaking application on a multitouch table. As a result of the study, we found that some challenges with the functionality undermined children's autonomous control. The researchers observed numerous instances of issues with control of the medium, including height of the table, sensitivity to multiple types of touch, and limited instructions and prompts. Implications for future research and practice are discussed.  相似文献   

触摸屏技术的原理及应用   总被引：4，自引：0，他引：4  

曲海波  陈莉 《中国教育技术装备》2006,(11):49-51

触摸屏技术被认为是未来人机交互科技的主流方向之一。相关的产业及其产品的应用也正在成为一个技术热点。阐述了触摸屏技术的基本原理，应用场合及发展趋势。  相似文献   

触屏式数控机床维修教学设备设计     

李奇亮 《中国现代教育装备》2011,(21):20-22

在数控机床装调与维修实训教学过程中,如何直观高效地进行电气控制线路故障逻辑分析及查找,数控系统参数误设的恢复,故障现象和故障类型的必然性联系判断,采用PMC编程法的机床功能修改以及机电联机调试等实训课题是目前数控设备应用与维护等相关专业学习中普遍存在的难点。针对这些关键问题,基于触摸屏和强抗干扰技术设计出自动设故的数控机床维修教学设备,该设备具有设故高效率、智能化、成本低等特点。该项目的完成为机床装调与维修、电气控制等实训教学创造了有利条件,同时提升了教师的教学水平和学生的综合能力,为进一步扩大校企合作领域奠定坚实基础。  相似文献   

The intergenerational impact of trauma and family violence on parents and their children     

《Child abuse & neglect》2019

BackgroundChildren who experience Child Abuse and Neglect (CAN) are at an increased risk of becoming a victim of Intimate Partner Violence (IPV) or a perpetrator of IPV or CAN. Moreover, maltreated children are at risk for developing long-lasting trauma symptoms, which can subsequently affect their own children’s lives. Understanding the mechanisms of the intergenerational transmission of violence and trauma is a prerequisite for the development of interventions.ObjectiveWe examine whether the relation between historical CAN and current trauma symptoms of mothers is mediated by current IPV. Furthermore, we investigate whether current CAN mediates the relation between current maternal trauma symptoms and child Post-Traumatic Stress Disorder (PTSD) symptoms. These mechanisms are compared for mothers and fathers.ParticipantsWe have recruited 101 fathers and 360 mothers (426 children, 50% boys, mean age 7 years) through child protection services.MethodsRespondents completed questionnaires about IPV, (historical) CAN and trauma symptoms.ResultsStructural equation models revealed that historical CAN of father and mothers was related to trauma symptoms. Only for mothers, this association was mediated by IPV. Trauma symptoms of both fathers and mothers were related to child PTSD symptoms. This effect was not mediated by current CAN.ConclusionIn violent families, maternal and paternal trauma can be transmitted over generations. However, intergenerational transmission of violence is found for mothers only. When family violence is reported, professionals should take the violence into account, as well as the history of parents and trauma symptoms of all family members.  相似文献   

26届奥运会女排选手身体形态与弹跳特征   总被引：13，自引：2，他引：11  

张冉 《广州体育学院学报》1998,(1)

以 2 6届亚特兰大奥运会女子排球决赛队员为主要研究对象 ,对其身体形态 ,弹跳能力进行数据统计 ,揭示当今世界级优秀女排运动员的基本特征 ,为中国女排训练及选材提供参考依据。  相似文献   

中国男篮在身体接触情况下背向进攻的特征   总被引：5，自引：0，他引：5  

周威  董伦红  熊国庆 《体育学刊》2001,8(3):32-34

通过对NBA总决赛、奥运会队及CBA比赛某些场次的背向进攻方式，脚步动作，投篮方法等研究，指出我国国家队和甲级队在比赛中有身体拉触的投篮次数占总数的比率少，对抗投篮得分占总得分的比率较低，队员主动进攻能力差等问题，为篮球科学训练提供理论依据和参考：  相似文献   

An integrated teaching method of gross anatomy and computed tomography radiology          下载免费PDF全文

Tohru Murakami  Yuki Tajika  Hitoshi Ueno  Sachiko Awata  Satoshi Hirasawa  Maki Sugimoto  Yoshihiko Kominato  Yoshito Tsushima  Keigo Endo  Hiroshi Yorifuji 《Anatomical sciences education》2014,7(6):438-449

It is essential for medical students to learn and comprehend human anatomy in three dimensions (3D). With this in mind, a new system was designed in order to integrate anatomical dissections with diagnostic computed tomography (CT) radiology. Cadavers were scanned by CT scanners, and students then consulted the postmortem CT images during cadaver dissection to gain a better understanding of 3D human anatomy and diagnostic radiology. Students used handheld digital imaging and communications in medicine viewers at the bench‐side (OsiriX on iPod touch or iPad), which enabled “pixel‐to‐tissue” direct comparisons of CT images and cadavers. Students had lectures and workshops on diagnostic radiology, and they completed study assignments where they discussed findings in the anatomy laboratory compared with CT radiology findings. This teaching method for gross and radiological anatomy was used beginning in 2009, and it yielded strongly positive student perspectives and significant improvements in radiology skills in later clinical courses. Anat Sci Educ 7: 438–449. © 2014 American Association of Anatomists.  相似文献   

基于ucGUI的触摸屏消息流转机制的研究     

王宜结 《淮南师范学院学报》2013,15(3):35-37

四线电阻式触摸屏因其使用方便,价格低廉等诸多突出的优点,获得了广泛的应用。ucGUI是Micrium公司开发的通用的嵌入式图形用户界面软件,其最大的优点是体积小,结构清晰,因而特别适用于内存较小的嵌入式系统。ucGUI对触摸屏有良好的支持。本文主要分析在ucGUI下触摸屏消息是如何被识别、传递并进行处理的。  相似文献