广西壮族“三月三”节日仪式的文化解读     

李嘉敏 《寻根》2020,(2):61-64

节日仪式在少数民族地区历来都扮演着重要角色,独特的节日仪式经过历史的沉淀凝结了少数民族世世代代的记忆。在仪式的展演中,具象化地呈现节日仪式,使得庆典过程搭载移动互联网的便车迅速扩大传播,正如一年一度的广西壮族"三月三"文化节,其作为广西壮族自治区的文化招牌,承载着壮族人民的宝贵记忆。  相似文献   

Bio-inspired untethered fully soft robots in liquid actuated by induced energy gradients     

Liang Xiong Lyu  Fen Li  Kang Wu  Pan Deng  Seung Hee Jeong  Zhigang Wu  Han Ding 《国家科学评论(英文版)》2019,6(5):970

Soft robotics with new designs, fabrication technologies and control strategies inspired by nature have been totally changing our view on robotics. To fully exploit their potential in practical applications, untethered designs are preferred in implementation. However, hindered by the limited thermal/mechanical performance of soft materials, it has been always challenging for researchers to implement untethered solutions, which generally involve rigid forms of high energy-density power sources or high energy-density processes. A number of insects in nature, such as rove beetles, can gain a burst of kinetic energy from the induced surface-energy gradient on water to return to their familiar habitats, which is generally known as Marangoni propulsion. Inspired by such a behavior, we report the agile untethered mobility of a fully soft robot in liquid based on induced energy gradients and also develop corresponding fabrication and maneuvering strategies. The robot can reach a speed of 5.5 body lengths per second, which is 7-fold more than the best reported, 0.69 (body length per second), in the previous work on untethered soft robots in liquid by far. Further controlling the robots, we demonstrate a soft-robot swarm that can approach a target simultaneously to assure a hit with high accuracy. Without employing any high energy-density power sources or processes, our robot exhibits many attractive merits, such as quietness, no mechanical wear, no thermal fatigue, invisibility and ease of robot fabrication, which may potentially impact many fields in the future.  相似文献   

电机拖动实验装置常见故障维修   总被引：1，自引：0，他引：1  

李欣茂  黄家敏  陈飞胜 《中国现代教育装备》2011,(13):26-28

介绍了电机拖动实验装置中常见故障的维修,包括三相可调电阻、电枢调节电阻、励磁调节电阻、功率因素表和转速表等,以及它们的处理方法,总结了查找相关故障的正确步骤。  相似文献   

推进教研统一，促进电子类学生创新意识的培养     

谷静  巩稼民 《科教文汇》2015,(7)

在高校教育中,教学与科研的关系复杂且内容丰富,一直以来以一系列实践活动为中心,形成了相互依存、相互促进的关系。“教研统一”是在科研和教学融合的背景下提出的,它不仅指科研与教学在形式和内容上的相互渗透,更重要的是强调在教师、学生和学科建设等多个方面实现教学与科研的协同发展。这不仅要求教师要科研与教学齐头并进,还要将科研的思路、方法以及成果融入到教学中,使学生在课堂教学过程中尽早地接触科研的概念,给学生提供能够进行科学研究的机会与平台,从而培养学生的科学意识、科学精神,提高学生的实践能力与创新意识。  相似文献   

大型循环流化床环形炉膛中气固流动特性的CPFD数值模拟     

邱桂芝  叶佳敏  王海刚  王小芳  王法军  孙运凯  聂立 《中国科学院大学学报》2016,33(2):218-222

环形炉膛理论上可有效解决大型循环流化床中二次风穿透不足的问题,其内外环壁面的设计也为更多的受热面提供了充足的空间,是一个具有明显优势的新型炉膛结构.本文使用CPFD数值模拟方法,对循环流化床环形炉膛冷态实验台内气固流动特性进行研究.模拟得到的炉内轴向压力分布和返料流率均与实验结果吻合较好.在此基础上分析炉内气固流动特性以及炉膛出口气固流动不均匀性,研究结果为环形炉膛的设计优化提供有价值的信息.  相似文献   

基于PLC和组态王的高效自动化集装箱码头监控系统设计     

曹金虎  薛士龙  陈加敏  张宁 《上海海事大学学报》2011,32(2):25-28

针对高效自动化集装箱码头物理仿真模型的控制点多、监控界面设计复杂等缺陷,由西门子公司的S7300可编程逻辑控制器和组态王6.53软件设计一套改进的控制系统.系统的硬件部分包括实物模型部分和系统控制部分（S7300 PLC）,系统控制部分由上位机监控系统和下位机控制系统构成.整个网络采用两层网络拓扑结构,上层为通信监控,底层为PROFIBUSDP现场总线.软件部分包括用于为下位机组态、编程以及调试的STEP7和用于监控界面设计的组态王6.53.实验测试表明,该仿真模型监控系统运行良好、稳定可靠.  相似文献   

‘Second death’, or revival of the ‘third world’ in the context of neo‐liberal globalization     

Hee‐Yeon Cho 《Inter-Asia Cultural Studies》2013,14(4):497-509

Abstract

This paper tries to analyze the historical change in the Third World in its emergent stage, in the authoritarian stage and in the current democratic stage and, thereafter, find a way to revive the Bandung spirit in the current globalization context. I define the Bandung spirit as one of a ‘non‐aligned self‐helped “organization against” the dominant powerful countries’; that is, spirit of ‘anti‐predominance’. This spirit has emerged on the base of such domestic orientation and realities as economic self‐reliance, nationally integrated political regime, convergence of the state and civil society around anti‐colonialism. However, according to intensification of the Cold War confrontation on the international level and its centrifugal influence, the early Third World changed to a ‘new’ authoritarian Third World. The Third World in this stage could be characterized by an exclusive authoritarian political regime, dependent‐developmentalist economic orientation and coercively repressed and mobilized, in the top‐down way, civil society. This authoritarian Third World began to be confronted with a strong struggle from the bottom for democratization. In order for democratization of the Third World to become its true revival in the context of globalization, the following tasks should be considered. First, the democratic Third World should be a great driving force for the institutionalization of the transnational public regulatory mechanism. Second, the democratic Third World countries try to go over a kind of ‘transformed’ dependent development strategy. Third, democratization should go along with recovery of political inclusiveness and openness of the state to civil society’s demands. Thereafter, I tried to construct globalist re‐interpretation of the Bandung, by way of conceptualizing the current globalization as imperial globalization, unlike the imperialist globalization which the historical Bandung wanted to confront. I argue that the Bandung spirit of collective self‐help organizations against the newly emerging dominant order should be revived in this worse imperial globalization context. In addition, I argue that a nationalist resistance is also one component of the multiple resistances in the current imperial globalization.  相似文献   

The sociology of children,childhood, and generation,by Madeleine Leonard,London, Sage Publications Ltd, 2016, 176 pp., US$43.00 (paperback), ISBN: 9781446259245     

Hee Jung Min 《Pedagogies: An International Journal》2017,12(3):313-316

  相似文献   

Putting the unit in pre-service secondary teachers’ unit circle     

Kevin C. Moore  Kevin R. LaForest  Hee Jung Kim 《Educational Studies in Mathematics》2016,92(2):221-241

  相似文献   

经济发达地区老年人居家养老服务的问题及其对策——以常熟市为例     

钱芳  钱佳敏 《常熟理工学院学报》2019,33(1):58-63

目前,常熟市居家养老服务过程中存在的主要问题是:服务内容单一化,且服务的市场化运作动力不足;为老服务队伍建设不足,且服务的专业化难以保障;各镇地域分布广且散,监督管理工作力度有限。为此,建议今后的居家养老服务:需求导向,实现供需适配,达到资源的优化配置;加大宣传,多渠道推进居家养老服务民生工程深入民心;扩大居家养老的受益面,完善居家养老服务的内容;提高老年人居家养老服务的有效需求;加大监督管理力度,使服务落到实处;加强专业化与志愿者相结合的居家养老服务队伍建设。  相似文献