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Plenary meeting of SAC/TC 207 held in Beijing
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《China Standardization》 2024年第2期10-10,共1页
The plenary meeting of SAC/TC 207, Environmental management, was held on February 2 in Beijing.More than 40 participants attended the meeting, including Wu Fengchang, Academician of the Chinese Academy of Environmenta... The plenary meeting of SAC/TC 207, Environmental management, was held on February 2 in Beijing.More than 40 participants attended the meeting, including Wu Fengchang, Academician of the Chinese Academy of Environmental Sciences, He Kaitao, Deputy Director-General of the Science and Technology Development Department of Ministry of Natural Resources, Li Qingrui, Director-General of former Department of Policies and Regulations of the Ministry of Environmental Protection. 展开更多
关键词 ACADEMICIAN DIRECTOR held
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9^(th) International Symposium on Refractories held in China Successfully
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《China's Refractories》 CAS 2024年第4期49-50,共2页
The 9^(th) International Symposium on Refractories (ISR2024),organized by The Chinese Society for Metals,The Chinese Ceramic Society,and Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.was held on Oct.15-... The 9^(th) International Symposium on Refractories (ISR2024),organized by The Chinese Society for Metals,The Chinese Ceramic Society,and Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.was held on Oct.15-18,2024 in Chengdu,China. 展开更多
关键词 REFRACTORIES held
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Plenary meeting of SAC/SWG 27 and Standardization Education Week held in Shenzhen
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《China Standardization》 2024年第3期10-10,共1页
Directed by the Shenzhen Administration for Market Regulation and the government of Pingshan district,the plenary meeting of SAC/SWG 27 and Standardization Education Week was held by Shenzhen Technology University on ... Directed by the Shenzhen Administration for Market Regulation and the government of Pingshan district,the plenary meeting of SAC/SWG 27 and Standardization Education Week was held by Shenzhen Technology University on April 22-26 in Shenzhen city,Guangdong province. 展开更多
关键词 district Market held
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2024 The 7th World Textile Merchandising Press Conference held in Beijing
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作者 Zhong Mengxia 《China Textile》 2024年第6期23-23,共1页
On September 30th,the press conference of the 7th World Textile Merchandising Conference was held at the China National Convention Center in Beijing.The Conference will be held on October 23-26,2024 in conjunction wit... On September 30th,the press conference of the 7th World Textile Merchandising Conference was held at the China National Convention Center in Beijing.The Conference will be held on October 23-26,2024 in conjunction with the 2024 WGSN Fashion Future Conference,the 26th China Shaoxing Keqiao International Textile Expo(Autumn),and the 2024 Keqiao Fashion Week(Autumn)in Keqiao,Shaoxing,Zhejiang Province. 展开更多
关键词 PROVINCE held TEXTILE
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手持式绳驱动微创手术机器人动力学建模及夹持力估计
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作者 冯庆敏 陈钰 +4 位作者 李帅 胡樱子 刘永志 谢勤岚 刘胜林 《中国医疗设备》 2025年第4期32-37,共6页
目的针对微创手术机器人末端器械进入人体后接收由钢丝绳传递的电机动力时,其动力学模型较难获取的问题,对绳驱动微创手术机器人动力学进行建模和仿真。方法首先对手持微创手术机器人的绳驱动结构进行绳轮传动系统的分析,得到驱动轮力... 目的针对微创手术机器人末端器械进入人体后接收由钢丝绳传递的电机动力时,其动力学模型较难获取的问题,对绳驱动微创手术机器人动力学进行建模和仿真。方法首先对手持微创手术机器人的绳驱动结构进行绳轮传动系统的分析,得到驱动轮力矩与从动轮力矩之间的关系,再对微创手术机器人的末端关节结构进行简化并进行动力学建模。针对建立的绳驱动微创手术机器人完整动力学模型,利用ADAMS对绳驱动微创手术机器人进行仿真分析和夹持力测试实验。结果仿真结果表明,理论驱动力矩与仿真的驱动力矩基本相同。在夹持力测试实验中,将估计值与实际测量值进行对比,得出模型的最大误差为0.265 N(1.5%),表明本研究模型在提高精度方面具有明显优势。结论本研究模型解决了绳驱动手术机器人由于钢丝绳的特殊性质导致的建模困难等问题,为主从一体式手持手术机器人夹持力感知提供了理论基础。 展开更多
关键词 微创外科手术 手持式手术机器人 动力学模型 仿真分析 绳驱动 夹持力估计
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Dr. Manfred Held和Dr. Paul Wanninger来绵讲学
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作者 李明 《含能材料》 EI CAS CSCD 北大核心 2009年第4期423-423,共1页
关键词 Manfred held CAST DR
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基于Held判据的线型聚能切割器结构优化 被引量:4
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作者 曹涛 陈炜 +2 位作者 金建峰 孙浩 路耀斌 《兵器装备工程学报》 CAS 北大核心 2019年第8期85-89,共5页
针对小口径弹药销毁过程中遇到的数量多、易飞散等问题,提出采用线型聚能切割器进行批量销毁。在线型聚能切割器破甲能力试验的基础上,借助有限元软件ANSYS/LS-DYNA进行了数值模拟,模拟结果与试验吻合较好。采用正交试验的方法对线型切... 针对小口径弹药销毁过程中遇到的数量多、易飞散等问题,提出采用线型聚能切割器进行批量销毁。在线型聚能切割器破甲能力试验的基础上,借助有限元软件ANSYS/LS-DYNA进行了数值模拟,模拟结果与试验吻合较好。采用正交试验的方法对线型切割器结构参数进行优化设计,并根据Held引爆理论确定了优化指标为u 2d,得到了最优方案2α=80°、λ=13.5 mm、δ=1.4 mm,为线型聚能切割器改进设计提供参考。 展开更多
关键词 爆炸力学 弹药销毁 held判据 数值模拟 正交优化 线型切割器
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清初礼书《頖宫礼乐全书》考论——以日藏本二种为核心
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作者 宋忻怡 《华中师范大学学报(人文社会科学版)》 北大核心 2025年第2期150-161,共12页
作为清顺治年间编纂留存的唯一一部礼书,张安茂《頖宫礼乐全书》尚未引起足够关注。该书存有三个版本,其中两部藏于日本,且皆为孤本。日本大阪府立中之岛图书馆藏乐英堂藏板,为张安茂家刻本,且为该书初印本。日本东北大学图书馆狩野文... 作为清顺治年间编纂留存的唯一一部礼书,张安茂《頖宫礼乐全书》尚未引起足够关注。该书存有三个版本,其中两部藏于日本,且皆为孤本。日本大阪府立中之岛图书馆藏乐英堂藏板,为张安茂家刻本,且为该书初印本。日本东北大学图书馆狩野文库藏本,系乐英堂本之修订版。国内通行版本十六卷,《中国古籍总目》记为顺治十三年刊本一种,为三部版本中最晚出者。日藏本收录张缙彦《序》、张安茂《缘起》等,未见国内版本收录。各版本卷首诸序之间有颇多异文,可供辑佚、校勘。该书东传日本,或与江户时代幕府释奠变革相关,两部版本藉此得以避开清初及晚清战乱,保存至今。是书为纂辑类著作,详实记录了清乾隆以前释奠礼的情况,对于清初礼乐研究具有很高的文献价值,反映了清代“绍续明礼”的文化面貌。 展开更多
关键词 《頖宫礼乐全书》 日藏本 版本源流 张安茂
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国产手持式视力筛查仪在学龄前儿童验光中的应用价值分析
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作者 薛丽亚 《中国社区医师》 2025年第7期63-65,共3页
目的:探讨国产手持式视力筛查仪在学龄前儿童验光中的应用价值。方法:选取2023年1—12月于上海市浦东新区川沙社区卫生服务中心登记的160名疑似视力异常的学龄前儿童作为研究对象,均进行常规视力表检查、国产手持式视力筛查仪检查。以... 目的:探讨国产手持式视力筛查仪在学龄前儿童验光中的应用价值。方法:选取2023年1—12月于上海市浦东新区川沙社区卫生服务中心登记的160名疑似视力异常的学龄前儿童作为研究对象,均进行常规视力表检查、国产手持式视力筛查仪检查。以散瞳验光法结果为“金标准”,分析常规视力表检查、国产手持式视力筛查仪的诊断效能。结果:160名疑似视力异常学龄前儿童中经散瞳验光法检查诊断为阳性120名(单纯散光50名,单纯近视30名,单纯远视17名,复性近视散光11名,复性远视散光12名),阴性40名。国产手持式视力筛查仪检查的敏感度、特异度高于常规视力表检查(P<0.05)。结论:国产手持式视力筛查仪在学龄前儿童验光中的应用价值较高,具有较高的敏感度、特异度,可用于儿童视力筛查。 展开更多
关键词 学龄前儿童 手持式视力筛查仪 视力表 验光
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教师如何持有其教学观?——基于反思性观念模型的个案研究
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作者 孙丹丹 张侨平 《天津市教科院学报》 2025年第1期15-24,共10页
教师教学观是教师对教学的内隐的认识和看法,它以一种复杂的方式深深影响着教师行为,但也常常表现出与教学行为的不一致。理解这种不一致的视角之一是假设不一致只存在于研究者的视角,而不存在于教师的头脑,这种立场呼吁对教师观念的进... 教师教学观是教师对教学的内隐的认识和看法,它以一种复杂的方式深深影响着教师行为,但也常常表现出与教学行为的不一致。理解这种不一致的视角之一是假设不一致只存在于研究者的视角,而不存在于教师的头脑,这种立场呼吁对教师观念的进一步剖析。为深入理解教师的观念,研究从反思性观念模型分析框架出发,借助个案研究的方法,详细刻画了个案教师在一项为期一年的教师教育项目中数学教学观持有方式的发展变化。研究发现,教师培养学生兴趣观念的例证性增强,讲解“来龙去脉”观念的一致性增强,强调学生探究观念的关联性增强,可以从例示性、论证性、联结性、一致性四个维度描述、理解及发展教师的反思性教学观。以上结论可以为旨在挑战教师观念、改进教学实践的专业发展项目提供启示。 展开更多
关键词 数学教师 教学观 持有方式 观念发展
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Comparison of the Retinomax hand-held autorefractor versus table-top autorefractor and retinoscopy 被引量:4
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作者 Ibrahim Tuncer Mehmet Ozgur Zengin Eyyup Karahan 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2014年第3期491-495,共5页
AIM:To compare noncycloplegic and cycloplegic results of Retinomax measurements with findings achieved after cycloplegia using table-top autorefractor and retinoscopy.METHODS:The study included 127 patients(mean age96... AIM:To compare noncycloplegic and cycloplegic results of Retinomax measurements with findings achieved after cycloplegia using table-top autorefractor and retinoscopy.METHODS:The study included 127 patients(mean age96.7mo,range 21 to 221).Retinomax(Rmax)(Nikon Inc.,Japan)was used to obtain noncycloplegic refraction.Under cycloplegia,refraction was measured with Rmax,table-top autorefractor(TTR)(Nikon NRK 8000,Inc.,Japan)and retinoscopy.The values of sphere,spherical equivalent,cylinder and axis of cylinder were recorded for Rmax,TTR and retinoscopy in each eye.All results were analyzed statistically.RESULTS:The mean spheric values(SV),spherical equivalent values(SEV)and cylindrical values(CV)of the noncycloplegic Rmax(SV:0.64 D,SEV:0.65 D and CV:0.03 D,respectively)were found to be significantly lower than cycloplegic TTR(1.43 D,1.38 D and 0.3 D;P=0.012,P=0.011 and P=0.04,respectively)and retinoscopy(1.34 D,1.45 D and 0.23 D;P=0.04,P=0.002 and P=0.045,respectively).Mean cycloplegic SV,SEV,CV were not significantly different between Rmax and TTR,Rmax and retinoscopy,TTR and retinoscopy.Cycloplegic or noncycloplegic axis values were not different between any method.CONCLUSION:Rmax may be used successfully as a screening tool but may not be accurate enough for actual spectacle prescription.Cycloplegic Rmax measurements may be able to identify refractive error in children because of approximate results to retinoscopy. 展开更多
关键词 AUTOREFRACTOR hand-held refractors RETINOSCOPY Retinomax
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Probing the Troodos Ophiolite:IGCP-649 Workshop and Field Excursion Held in Agros-Cyprus 被引量:4
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作者 YANG Jingsui Julian PEARCE Yildirim DILEK 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第3期1041-1044,共4页
The second IGCP-649 Workshop, held in Agros-Cyprus during 14-20 May 2016, brought together nearly fifty international scientists from around the world, and included a 5-day field excursion on the classic Troodos ophio... The second IGCP-649 Workshop, held in Agros-Cyprus during 14-20 May 2016, brought together nearly fifty international scientists from around the world, and included a 5-day field excursion on the classic Troodos ophiolite. Organized by the IGCP-649 Project Leadership and the Geological Survey Department of Cyprus, the workshop provided a forum for discussions on the latest views and interpretations on the petrogenesis of crustal and upper mantle peridotites in ophiolites, and introduced many young researchers and students to the intemal structure of the classical Troodos ophiolite. This was particularly the case for a large group of Chinese scholars and students, who visited Cyprus and the Troodos ophiolite for the first time. A 4-day profile across the complete ophiolite sequence gave these scientists a first- hand opportunity to examine the lithological and compositional variations within the Cretaceous oceanic crust and to study the igneous and tectonic contacts between them. Lively discussions by the experts and students in front of some of the best 3-dimensional outcrops were most fruitful and allowed all participants to compare the Troodos tectonics with some of ophiolites elsewhere. structure, geochemistry and the other well-documented 展开更多
关键词 Probing the Troodos Ophiolite IGCP-649 Workshop and Field Excursion held in Agros-Cyprus
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The International Cartographic Association National Atlas Commission Meeting Held in Beijing 被引量:1
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作者 Liao Ke 《Journal of Geographical Sciences》 SCIE CSCD 1990年第2期107-108,共2页
ICA National Atlas Commission held a commission meeting and symposium from August 8-12,1990 in Beijing.Among those present at the meeting were Dr.B.Rystedt(Sweden),Chairman of ICA,Dr.E.Ciekirska(Canada),Vice Chairman ... ICA National Atlas Commission held a commission meeting and symposium from August 8-12,1990 in Beijing.Among those present at the meeting were Dr.B.Rystedt(Sweden),Chairman of ICA,Dr.E.Ciekirska(Canada),Vice Chairman of ICA and members from U.S.A.,China,Spain,the Netherlands,Czechoslovakia,India as well as representatives from U.S.S.R.,Czechoslovakia,and Spain.40 Chinese cartographers attended the meeting.The major topics 展开更多
关键词 maps The International Cartographic Association National Atlas Commission Meeting held in Beijing
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Special Lecture on Rare Earths Held in Inner Mongoli
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《Rare Metals》 SCIE EI CAS CSCD 1999年第3期175-175,共1页
关键词 Lecture on held in Earths INNER Mongoli RARE
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7^(th) UNITAR International Conference on Heavy Crude and Tar Sands Held in Beijing 被引量:2
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作者 Song Jie and Zhang Haiyun(China Petroleum Daily) 《China Oil & Gas》 CAS 1998年第4期249-250,共2页
关键词 UNITAR International Conference on Heavy Crude and Tar Sands held in Beijing
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Carry forward the Journal to a higher level——WJG Editorial Board Meeting held in Beijing
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《World Journal of Gastroenterology》 SCIE CAS CSCD 1998年第6期28-29,共2页
TheFirstEditorialBoardMeetingoftheWorldJournalofGastroenterology(WJG)washeldattheDiaoyutaiStateGuestHouseinB... TheFirstEditorialBoardMeetingoftheWorldJournalofGastroenterology(WJG)washeldattheDiaoyutaiStateGuestHouseinBeijingonOctober21... 展开更多
关键词 held BOARD BEIJING
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The First Conference of the 4th Session of the Special Committee on Seismology,SSC held in Chengdu
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《Acta Seismologica Sinica(English Edition)》 CSCD 1995年第4期661-662,共2页
TheFirstConferenceofthe4thSessionoftheSpecialCommitteeonSeismology,SSCheldinChengdu¥//The4thSessionoftheComm... TheFirstConferenceofthe4thSessionoftheSpecialCommitteeonSeismology,SSCheldinChengdu¥//The4thSessionoftheCommitteeonSeismology... 展开更多
关键词 CONFERENCE the held Chengdu FIRST SESSION SSC
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The 7^(th) Edition of the “Mars en Folie” 2014 Held in China
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作者 Audrey Guo 《China's Foreign Trade》 2014年第4期65-65,共1页
On the occasion of the 19th edition of"La Fetede la Francophonie en Chine",Belgium,theWallonia-Brussels Delegation and Quebecgovernment offices in China present the"Mars enFolie"music festival betw... On the occasion of the 19th edition of"La Fetede la Francophonie en Chine",Belgium,theWallonia-Brussels Delegation and Quebecgovernment offices in China present the"Mars enFolie"music festival between March 5th and March 22th.40 concerts were showed in 14 cities throughout Chinaincluding Hong Kong,Tianjin,Qingdao,Wuhan,Chengdu,Nanjing,Hangzhou,Chongqing,Shanghai。 展开更多
关键词 Qingdao Hangzhou TIANJIN EDITION of the held in CH
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2015 Refractories Symposium Held in Qingdao
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《China's Refractories》 CAS 2015年第4期47-47,共1页
2015 Refractories Symposium (2015 (13th) China Symposium on Monolithic Refractories in conjunction with 2015 China's Refractories Raw Materials Symposium) was held in Qingdao on Oct. 25-27, 2015. It is organized ... 2015 Refractories Symposium (2015 (13th) China Symposium on Monolithic Refractories in conjunction with 2015 China's Refractories Raw Materials Symposium) was held in Qingdao on Oct. 25-27, 2015. It is organized by Refractories Branch of The Chinese Society for Metals and Sinosteel Luoyang Institute of Refractories Research Co., Ltd., and was sponsored by Qingdao Almatis Co., Ltd., Zhejiang Zili Co., Ltd., and Jiangsu Jingxin New Material Co., Ltd. Meanwhile, a small-scaled expo was organized involving refractory raw materials and auxiliary materials; manufacture, processing, and installation equipment; testing equipment; new products, etc. 展开更多
关键词 WWW Refractories Symposium held in Qingdao
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Beautiful China Tourism Fair Held in Madrid
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《China & The World Cultural Exchange》 2019年第6期6-6,共1页
The Beautiful China Tourism Fair was held in Madrid on May 1 5 at the historic Palacio de los Duques de Pastrana. The event was jointly organized by the China National Tourist Office, the China Cultural Center in Madr... The Beautiful China Tourism Fair was held in Madrid on May 1 5 at the historic Palacio de los Duques de Pastrana. The event was jointly organized by the China National Tourist Office, the China Cultural Center in Madrid and the Chinese Embassy in Spain and included an exhibition of photographs entitled uBeautiful China". 展开更多
关键词 China TOURISM FAIR held Madrid Duques DE Pastrana
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