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数学探究三境界:苦探 智探 乐探--一道函数零点问题的探解之旅
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作者 张培强 《上海中学数学》 2021年第7期37-39,79,共4页
通过对一道函数零点问题的解法探究,从繁杂到简单,从陌生到熟悉,经历“苦探、智探、乐探”的三境界.以此反思教学,教师应关注学生的思维起点,促进学生的思维优化,培育学生的思维习惯,提升学生的数学探究能力和问题解决能力.
关键词 数学探究 苦探 智探 乐探 函数零点
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A Novel High-Voltage Detector Integrated into SPIC by Using FFLR 被引量:1
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作者 韩磊 叶星宁 陈星弼 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2001年第10期1250-1254,共5页
A novel high voltage detector that can be integrated into SPIC (Smart Power IC) is proposed.The structure is designed on the basis of normal junction terminal technique of FFLR (Floating Field Limiting Rings) system.... A novel high voltage detector that can be integrated into SPIC (Smart Power IC) is proposed.The structure is designed on the basis of normal junction terminal technique of FFLR (Floating Field Limiting Rings) system.The field limiting ring as a voltage divider,is used to optimize the surface field.The voltage of main junction increases from 0 to a high value,while the utmost ring is designed to vary within a small range,which can be handled by using low voltage logic circuits.An example of 400V rings system is analyzed and simulated for this structure.The results prove that the high voltage detector can detect high voltage in SPIC.The structure can be integrated into SPIC.Besides,it is compatible with CMOS or BCD(Bipolar CMOS Dmos) technology,without any additional processes required. 展开更多
关键词 FFLR high voltage detector voltage divider detector ring
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Three-layer intelligence of planetary exploration wheeled mobile robots:Robint,virtint,and humint 被引量:4
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作者 DING Liang GAO HaiBo +4 位作者 DENG ZongQuan LI YuanKai LIU GuangJun YANG HuaiGuang YU HaiTao 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2015年第8期1299-1317,共19页
The great success of the Sojourner rover in the Mars Pathfinder mission set off a global upsurge of planetary exploration with autonomous wheeled mobile robots(WMRs),or rovers.Planetary WMRs are among the most intelli... The great success of the Sojourner rover in the Mars Pathfinder mission set off a global upsurge of planetary exploration with autonomous wheeled mobile robots(WMRs),or rovers.Planetary WMRs are among the most intelligent space systems that combine robotic intelligence(robint),virtual intelligence(virtint),and human intelligence(humint) synergetically.This article extends the architecture of the three-layer intelligence stemming from successful Mars rovers and related technologies in order to support the R&D of future tele-operated robotic systems.Double-layer human-machine interfaces are suggested to support the integration of humint from scientists and engineers through supervisory(Mars rovers) or three-dimensional(3D) predictive direct tele-operation(lunar rovers).The concept of multilevel autonomy to realize robint,in particular,the Coupled-Layer Architecture for Robotic Autonomy developed for Mars rovers,is introduced.The challenging issues of intelligent perception(proprioception and exteroception),navigation,and motion control of rovers are discussed,where the terrains' mechanical properties and wheel-terrain interaction mechanics are considered to be key.Double-level virtual simulation architecture to realize virtint is proposed.Key technologies of virtint are summarized:virtual planetary terrain modeling,virtual intelligent rover,and wheel-terrain interaction mechanics.This generalized three-layer intelligence framework is also applicable to other systems that require human intervention,such as space robotic arms,robonauts,unmanned deep-sea vehicles,and rescue robots,particularly when there is considerable time delay. 展开更多
关键词 planetary exploration rovers robot intelligence virtual intelligence three-layer architecture
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