关键词： 电脑制作活动   机器人竞赛   上海市   中小学   赛中   一等奖  

摘要： 2011年7月25日～8月1日，第十二届全国中小学电脑制作活动、电脑机器人竞赛在济南举行。上海选手在竞赛中勇创佳绩，获机器人竞赛一等奖1名，二等奖和三等奖各2名；获电脑制作类作品活动一等奖4名，二等奖3名，三等奖10名；上海市获最佳组织奖。

关键词： 电脑制作活动   中小学生   机器人竞赛   应届高中毕业生   上海   赛中   竞赛活动   信息技术  

摘要： 2011年7月25日，第十二届全国中小学电脑制作活动、电脑机器人竞赛在山东省济南一中举行。全国中小学电脑制作活动是唯一纳人高考保送范围的国家级信息技术竞赛活动。凡高中阶段获得全国中小学电脑制作活动一、二等奖的应届高中毕业生，可获得保送资格或最高增加20分投档优先录取的资格。

关键词： 清华大学出版社   机器人学   纳米材料   人工边界  

摘要： 1.《纳米材料表面电子结构分析》本书从表面科学角度,重点介绍如何利用表面科学实验方法获取纳米材料电子结构的信息,同时,注意理论计算与具体实验结果相结合。

关键词： 体操机器人   参数辨识   遗传算法   动力学模型  

摘要： 针对加速度驱动型三关节体操机器人,从机理和数据两方面进行了动力学模型分析,首先通过机理分析得到模型的刚体动力学分量和电机驱动分量;然后通过加速度阶跃响应曲线分析得到纯滞后分量,综合这3种分量,确定三关节体操机器人的模型结构,并利用改进的遗传算法对该综合模型进行参数辨识.将辨识后的模型与实际系统进行比较,讨论了产生误差的原因.

关键词： 机器人足球   竞赛   比赛项目   竞技性   观赏性   足球场  

摘要： 机器人足球 由于机器人足球的观赏性和竞技性较强，近几年在机器人比赛项目中一直受到较高关注。 将两队由规则允许的机器人球队放置于一块模拟的足球场中，双方机器人尽自己所能将球攻向对方球门。

关键词： 机器人竞赛   中学校长   湖南师大   长沙市   中小学   实验   竞赛活动   党组书记  

摘要： 本刊讯2011年5月8日，来自湖南省长沙市中小学的4004余名机器人竞赛选手汇聚湖南师大附中博才实验中学，参加长沙市第四届中小学机器人竞赛。开幕式由长沙市科协党组书记刘谷收主持，长沙市教育局副局长王建华致辞，湖南省政协常委、市政协副主席彭继球宣布竞赛活动开幕。湖南师大附中博才实验中学校长周望城介绍了学校的办学理念和办学特色，并预祝竞赛活动圆满成功。

关键词： CPN神经网络   网格计算   仿人机器人   可持续学习能力  

摘要： 在对CPN神经网络基本原理进行研究的基础上,用一个CPN网络模拟仿人机器人学习推理能力的例子,并分析了其在网格计算平台下实现的可能性和可持续学习能力,为进一步研究仿人机器人脑行为提供了可能。

关键词： endometrial carcinoma   robotic surgery   surgical morbidity  

摘要： OBJECTIVE: We sought to examine outcomes in an expanding robotic surgery (RS) program. STUDY DESIGN: In all, 1000 women underwent RS from May 2006 through December 2009. We analyzed patient characteristics and outcomes. A total of 377 women undergoing RS for endometrial cancer staging (ECS) were compared with the historical data of 131 undergoing open ECS. RESULTS: For the entire RS cohort of 1000, the conversion rate was 2.9%. Body mass index increased over 3 time intervals: T1 = 26.2, T2 = 29.5, T3 = 30.1 (T1:T2, P = .01;T1:T3, P = .0001;T2:T3, P = .037). Increasing body mass index was not associated with increased major complications: T1 = 8.7%, T2 = 4.3%, T3 = 5.7%. In the ECS cohort, as compared with open ECS, women undergoing RS had lower blood loss (46.9 vs 197.6 mL, P = .0001), shorter hospitalization (1.4 vs 5.3 days, P =.0001), fewer major complications (6.4% vs 20.6%, P =.0001), with higher lymph node counts (15.5 vs 13.1, P = .007). CONCLUSION: RS is associated with favorable morbidity and conversion rates in an unselected cohort. Compared to laparotomy, robotic ECS results in improved outcomes.

关键词： Mobile robot   Kinematics   Dynamics   Actuators   Virtual vehicle   Flat-system   Backstepping   Tracking   Convoy  

摘要： This paper establishes control strategies for wheeled mobile robots which are subjected to nonholonomic constraints. The mobile robot model includes the kinematic and dynamic equations of motion and the actuator dynamics. Using the notion of virtual vehicle and the concept of flatness, and applying the backstepping methodology the paper proposes control schemes for trajectory tracking for the considered augmented model of the mobile robot. The resulting controller ensures exponential convergence to a desired trajectory. Applications of the tracking controller for convoy-like vehicles governed by the augmented models are considered as well. Simulation results and lab experiments are demonstrated. (C) 2011 Elsevier B.V. All rights reserved.

关键词： electronic nose   mobile robotic olfaction   gas sensing   Metal Oxide Semiconductor Sensor  

摘要： One of the major disadvantages of the use of Metal Oxide Semiconductor (MOS) technology as a transducer for electronic gas sensing devices (e-noses) is the long recovery period needed after each gas exposure. This severely restricts its usage in applications where the gas concentrations may change rapidly, as in mobile robotic olfaction, where allowing for sensor recovery forces the robot to move at a very low speed, almost incompatible with any practical robot operation. This paper describes the design of a new e-nose which overcomes, to a great extent, such a limitation. The proposed e-nose, called Multi-Chamber Electronic Nose (MCE-nose), comprises several identical sets of MOS sensors accommodated in separate chambers (four in our current prototype), which alternate between sensing and recovery states, providing, as a whole, a device capable of sensing changes in chemical concentrations faster. The utility and performance of the MCE-nose in mobile robotic olfaction is shown through several experiments involving rapid sensing of gas concentration and mobile robot gas mapping.