Design of the low power wake-up receiver for internet of things communication

A wake-up receiver with high energy efficiency and low power consumption is proposed for solving the power consuming problems of wireless nodes communication in the Internet of Things. The proposed wake-up receiver based on the wake-up mechanism can effectively schedule the network nodes communication, and use the simple envelope detection structure to achieve frequency down-conversion, which can flexibly manage energy and reduce power consumption. Based on UMC 65nm CMOS process technology, the wake-up receiver is designed and simulated. The results show that it can achieve S₁₁ of -21dBm and a sensitivity of -75dBm at a data rate of 1Mb/s, when operating at the central frequency of 780MHz and input signal adopting an on-off keying (OOK) modulation, and the power consumption is 82μW at 1.2V voltage supply.     

中厚板滚盘式冷床的设计与应用

本文阐述了中冶南方武汉威仕热工有限公司设计的湘钢宽厚板3#热处理生产线1#冷床的主要技术参数、原理结构及技术特点,并探讨中厚板冷床设备设计及应用的一些问题.     

Robust lane recognition for structured road based on monocular vision

A robust lane detection and tracking system based on monocular vision is presented in this paper.First,the lane detection algorithm can transform raw images into top view images by inverse perspective mapping(IPM),and detect both inner sides of the lane accurately from the top view images.Then the system will turn to lane tracking procedures to extract the lane according to the information of last frame.If it fails to track the lane,lane detection will be triggered again until the true lane is found.In this system,θ-oriented Hough transform is applied to extract candidate lane markers,and a geometrical analysis of the lane candidates is proposed to remove the outliers.Additionally,vanishing point and region of interest(ROI)dynamically planning are used to enhance the accuracy and efficiency.The system was tested under various road conditions,and the result turned out to be robust and reliable.     

新型城镇化下欠发达地区传统文化保护研究——以张家口市段家堡村为例

新型城镇化背景下欠发达地区传统文化保护的关键取决于其能否在保护文化资本和环境资本的基础上,实现经济资本的提升、文化价值观念及生活方式的转变.通过对张家口市下花园区段家堡村传统文化的调查研究,提出转变观念,主动保护、挖掘和丰富欠发达地区传统文化特色,提升旅游开发优势,带动地区经济发展,实现新型城镇化的同时更好地保护传统文化.     

文艺复兴透视法的“技巧史”

基于考察透视是如何具体的、实质性的呈现为一种技巧形成的过程.虽然希腊和罗马时出现了简单的有透视特点的壁画,但是真正发生技巧变革的是文艺复兴时期的透视,尤以布鲁内莱斯基和阿尔贝蒂为代表,对透视技巧的变革和形成作了最重要的贡献.     

中国传统性伦理思想对大学生性教育的影响

性伦理思想对我国当代大学生性教育具有十分重要的意义,通过对中国传统性伦理思想的研究分析,探索其对大学生性教育产生的主要影响,为进一步推进当代大学生的性教育提供合理性依据。     

“顶岗置换”模式培养高师准幼儿教师的探讨

＂顶岗置换＂模式不仅促进了一线学前教师的职后培训,更有利于高师准幼儿教师的培养;同时,＂顶岗置换＂对高师准幼儿教师的培养提出了相应的挑战：顶岗对学生的高要求——能否从学生变为教师,顶岗对学生的低回报——能否从教中学。提出相应策略,促进＂顶岗置换＂模式下准幼儿教师的培养。     

互文性视角下的杨译《红楼梦》典故的翻译策略

《红楼梦》中有大量的典故,充满着丰富的互文性。翻译过程中的互文指涉蕴含着深厚的历史文化沉淀。从互文性角度探讨杨宪益、戴乃迭夫妇所译《红楼梦》中典故翻译。认为译者充分发挥了主体性,把保留原语互文关系和文化特色放在首位,这对提高翻译质量和更好地传递典故的文化内涵有着重要的作用。     

2-（4-氯苯氨基）甲基苯酚降解的动力学研究

采用高效液相色谱技术,开展了Fenton试剂对2-（4-氯苯氨基）甲基苯酚（CMP）的氧化降解动力学的研究。考察了初始双氧水摩尔浓度、亚铁离子摩尔浓度和温度等因素对CMP降解速率的影响,结果表明,当双氧水摩尔浓度、亚铁离子摩尔浓度增大和温度升高时,CMP的氧化速率明显加快。在30~45℃的温度范围内,其氧化降解符合假一级反应动力学模型,反应的表观活化能Ea为102.90kJ/mol。     

明末清初来华传教士翻译活动特点及其影响因素

明末清初,西方来华传教士将翻译作为“学术传教”的一种手段,将大量的西方宗教和科技著作译介入中国,同时将中国古代典籍和文献著作等输出至西方,形成了“西学东渐”和“东学西传”并存的局面。客观上,这是中西方政治、经济和文化的发展的必然结果;主观上,这与传教士自身的人格魅力和知识素养有着紧密的联系。