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基于等效结构应力法的高强钢焊接结构低温主S-N曲线
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作者 高杰 鞠晓臣 +2 位作者 左照坤 赵欣欣 段梦兰 《船舶力学》 EI CSCD 北大核心 2024年第4期571-581,共11页
现有的疲劳S-N曲线已不再适用于北极的低温环境,为了评估北极海洋工程设备材料的低温疲劳寿命,有必要建立金属结构尤其是焊接结构的低温疲劳S-N曲线。本文基于等效结构应力法,计算出Q690高强钢管环焊缝的主S-N曲线,并通过共振疲劳试验... 现有的疲劳S-N曲线已不再适用于北极的低温环境,为了评估北极海洋工程设备材料的低温疲劳寿命,有必要建立金属结构尤其是焊接结构的低温疲劳S-N曲线。本文基于等效结构应力法,计算出Q690高强钢管环焊缝的主S-N曲线,并通过共振疲劳试验对该方法进行了验证。在此基础上,结合大量的高强钢焊接结构试验结果,将温度敏感因子c引入到低温疲劳主S-N曲线的推导中,首次建立了基于低温金属焊接结构的主S-N曲线,并对文献中的疲劳S-N试验数据和ASME中的修正方法进行了对比和验证。结果表明,等效结构应力法能够较准确地计算出焊缝疲劳S-N曲线,推导出的金属焊接结构低温主S-N曲线与试验曲线吻合较好,能够满足低温地区工程要求,可为高强钢焊接结构在北极地区低温环境中的广泛应用提供理论指导。该方法可以为金属焊接结构的低温疲劳研究节省大量的成本,减少非标准试验操作造成的不必要的误差。这对北极海洋工程设备的设计、安全运行和疲劳评估具有重要意义。 展开更多
关键词 等效结构应力法 焊接结构 低温主s-N曲线 温度敏感系数
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全程·融合·协同:教育硕士U-G-S协同培养模式的创新实践研究
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作者 孙君 李彦敏 《菏泽学院学报》 2024年第4期65-72,共8页
教育硕士是职前教师培养的重要对象,是高素质研究型教师队伍的重要来源。教育硕士U-G-S协同培养是我国教师队伍建设政策的主旨所向,更是卓越教育硕士培养的现实所需。以J大学教育硕士为研究样本,以利益相关者理论为理论基础,厘清U-G-S... 教育硕士是职前教师培养的重要对象,是高素质研究型教师队伍的重要来源。教育硕士U-G-S协同培养是我国教师队伍建设政策的主旨所向,更是卓越教育硕士培养的现实所需。以J大学教育硕士为研究样本,以利益相关者理论为理论基础,厘清U-G-S协同培养模式中各利益主体之间的互动关系及利益诉求,形成U-G-S协同培养模式的运行程序,并依据“计划、行动、观察、反思”的步骤开展行动实践。研究结果显示,U-G-S协同培养模式在导师团队建设、人才素养提升、研究成果产出等多方面取得显著成效。 展开更多
关键词 教育硕士 U-G-s 培养模式 多元主体协同
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Strategies for Improving the Effectiveness of Professional Practice for Full-Time Professional Master Degree Postgraduate in Mineral Processing Engineering
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作者 Jiushuai Deng Juan Hu +3 位作者 Zhiqiang Xu Weidong Wang Zhongyi Bai Tingting Hu 《Journal of Contemporary Educational Research》 2023年第1期27-32,共6页
In order to gain practical experience and hands-on skills,full-time professional master degree postgraduate in mineral processing engineering should engage in professional practices.Nonetheless,a series of problems,in... In order to gain practical experience and hands-on skills,full-time professional master degree postgraduate in mineral processing engineering should engage in professional practices.Nonetheless,a series of problems,including insufficient time for practice,low management level,inadequate implementation of the double-supervisor system,and poor results of professional practice,has reduced the effectiveness of professional practice.In view of the aforementioned problems and the characteristics of the discipline,this paper proposes several strategies for improving the effectiveness of professional practice for postgraduates in mineral processing engineering. 展开更多
关键词 Mineral processing engineering FULL-TIME Application-oriented masters degree Professional practice
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Looking Forward to China's Foreign Affairs in 2002
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《China's Foreign Trade》 2002年第4期6-7,共2页
关键词 Us Looking Forward to China’s Foreign affairs in 2002
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"Emperor's Power Far Away from the Countryside"and"Town in Charge of Village Affairs":The Extreme Grass-roots Management System is Not Conducive to the Healthy Development of the Countryside
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作者 Xiang CHEN 《Asian Agricultural Research》 2022年第8期13-14,共2页
This paper compares the two different rural management methods of"emperor’s power far away from the countryside"and"town in charge of village affairs",which shows that the extreme grass-roots mana... This paper compares the two different rural management methods of"emperor’s power far away from the countryside"and"town in charge of village affairs",which shows that the extreme grass-roots management system is not conducive to rural development.This paper also points out that rural development needs to find a road of sustainable development in line with its own characteristics,which is the fundamental shortcut to change poverty and become rich for a long time. 展开更多
关键词 "Emperor’s power far away from the countryside" "Town in charge of village affairs" Grass-roots management Rural management
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基于Web of Science数据库的护理硕士研究生教育领域研究趋势的可视化分析
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作者 蒋艳 任婷婷 +1 位作者 石磊 钟玲 《循证护理》 2024年第11期1973-1980,共8页
目的:了解近10年护理硕士研究生教育领域在全球的研究热点、研究现状和发展趋势。方法:通过Web of Science检索2013年1月1日—2023年3月1日护理硕士研究生教育领域的英文文献,对收集到英文文献的年度发文量、国家发文量、作者发文量、... 目的:了解近10年护理硕士研究生教育领域在全球的研究热点、研究现状和发展趋势。方法:通过Web of Science检索2013年1月1日—2023年3月1日护理硕士研究生教育领域的英文文献,对收集到英文文献的年度发文量、国家发文量、作者发文量、机构发文量、关键词聚类共现的数据进行可视化处理,分析其研究热点。CiteSpace软件用于检测关键字突现。结果:护理硕士研究生教育领域全球年度发文量呈整体逐步上升趋势;关键词共现聚类分析结果显示,研究热点主题集中在多领域服务实践、心理支持策略、跨专业教育课程、研究生教育模式。结论:近10年护理硕士研究生教育处于迅速发展阶段,护理硕士研究生模拟训练策略、临床思维能力、社会适应能力、跨学科模式等可能是未来该领域研究的热点和方向。未来发展跨学科研究生教育模式,充分发挥护理硕士研究生优势,提高其社会适应能力水平。 展开更多
关键词 护理硕士研究生 护理教育 研究进展 研究热点 可视化分析
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History of the PRC’s Participation in International Human Rights Affairs and Its Contribution to the Cause of International Human Rights
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作者 罗艳华 CHEN Peiyao(译) LI Man(译) 《The Journal of Human Rights》 2019年第3期308-335,共28页
The history of the participation of People’s republic of china in international human rights affairs can be mainly divided into two phases since its founding 70 years ago,and it can be further divided into four stage... The history of the participation of People’s republic of china in international human rights affairs can be mainly divided into two phases since its founding 70 years ago,and it can be further divided into four stages with typical events after the launch of reform and opening-up.Since the adoption and implementation of the reform and opening-up policy in the late 1970 s china has witnessed the active participation and fruitful achievements of china in bilateral and multilateral human rights cooperation and communication,as well as making important contributions to the international human rights cause. 展开更多
关键词 the People’s REPUBLIC of China INTERNATIONAL HUMAN RIGHTs affairs INTERNATIONAL HUMAN RIGHTs CAUsE
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Civil Affairs Authorities Bent on Protecting People's Basic Rights
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作者 Li Liguo Vice-Minister of Ministry of Civil Affairs 《The Journal of Human Rights》 2010年第3期2-4,共3页
In response to the global financial crisis,China’s civil affairs au-thorities redoubled their effort in 2009 to improve the livelihood of the Chinese people and protect their basic rights and interests under the cons... In response to the global financial crisis,China’s civil affairs au-thorities redoubled their effort in 2009 to improve the livelihood of the Chinese people and protect their basic rights and interests under the constitutional principle of respectingand protecting human rights. 展开更多
关键词 BENT Civil affairs Authorities Bent on Protecting People’s Basic Rights Basic
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Work in Cooperation for A New Chapter in the Cause of International Human Rights——Speech by Yang Jiechi,Vice Minister of Foreign Affairs of the People's Republic of China at the Inaugural Session of the United Nations Human Rights Council
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《The Journal of Human Rights》 2006年第4期5-6,共2页
Mr Chairman, I would like to start by congratulating you, on behalf of the Chinese Govern- ment, on your assumption of the Chair of the inaugural session of the Human Rights Council. I have every confidence that unde... Mr Chairman, I would like to start by congratulating you, on behalf of the Chinese Govern- ment, on your assumption of the Chair of the inaugural session of the Human Rights Council. I have every confidence that under your able leadership this session will be successful. 展开更多
关键词 speech by Yang Jiechi Vice Minister of Foreign affairs of the People’s Republic of China at the Inaugural session of the United Nations Human Rights Council Work in Cooperation for A New Chapter in the Cause of International Human Rights
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超声生物显微镜与IOL-Master测量人眼睫状沟直径的比较性研究 被引量:2
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作者 宁琳 孔珺 +1 位作者 史铭宇 张劲松 《国际眼科杂志》 CAS 2008年第11期2271-2273,共3页
目的:比较分析超声生物显微镜(ultrasound biomicroscopy,UBM)与IOL-Master测量人眼睫状沟直径的差异,为更准确地计算有晶状体眼后房型人工晶状体植入术(phakicposterior chamber intraocular lens,PPCIOL)也称为可植入的接触镜(implant... 目的:比较分析超声生物显微镜(ultrasound biomicroscopy,UBM)与IOL-Master测量人眼睫状沟直径的差异,为更准确地计算有晶状体眼后房型人工晶状体植入术(phakicposterior chamber intraocular lens,PPCIOL)也称为可植入的接触镜(implantable contact lens,ICL)的直径提供客观依据(以下简称ICL),从而有效减少术后并发症。方法:选取植入ICL术后1mo的高度近视眼患者32例(60眼)和正视对照组人群28例(48眼),分别作为实验组和对照组,对照组要求排除任何眼科手术史。应用UBM分别测量实验组和对照组的睫状沟直径;应用IOL-Master测量实验组和对照组的角膜横径即水平白到白的距离(whitetowhite,W-W),将所得的数据进行统计学分析。结果:植入ICL后1mo患者的UBM测得的睫状沟直径与IOL-Master测得的W-W值比较其差异有统计学意义(t=2.023,1.988;P<0.05);健康人眼的UBM测得的睫状沟直径与IOL-Maste测得的W-W值比较其差异有统计学意义(P<0.05);ICL术后患者与健康眼的UBM测得的睫状沟直径值比较其差异无统计学意义;二者的IOL-Master测得的W-W值比较其差异也无统计学意义。结论:UBM可以作为测量人眼睫状沟直径的工具;应用IOL-Master眼外测得W-W值与UBM测得的睫状沟直径值是有区别的,我们更倾向于应用UBM测得的值;人眼是存在解剖变异的,这些变异会增加ICL植入的危险性。 展开更多
关键词 超声生物显微镜 IOL-master 睫状沟直径 角膜横径
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基于IMO分级的MASS岸基操控人员法律地位探析 被引量:1
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作者 袁雪 姜爱华 《中国海洋大学学报(社会科学版)》 2023年第1期34-48,共15页
随着AI技术的发展,人工智能与传统设备的结合已深刻改变了人类的生产生活。MASS(Maritime Autonomous Surface Ships)全称为海上自主水面船舶,其作为人工智能的产物,代表着未来船舶的发展趋势,也推动MASS岸基操控人员这一新兴海事主体... 随着AI技术的发展,人工智能与传统设备的结合已深刻改变了人类的生产生活。MASS(Maritime Autonomous Surface Ships)全称为海上自主水面船舶,其作为人工智能的产物,代表着未来船舶的发展趋势,也推动MASS岸基操控人员这一新兴海事主体的产生。“自动化”并不意味着在MASS的操作过程中完全消除人员因素的干扰,在IMO所定义的MASS发展四阶段中,人在循环中的角色是不断变化的,其职能、责任、法律地位均有所不同,关于岸基操控人员法律地位的认定,具有基础性和高度优先性。L1级别MASS无需岸基操控人员;L2级别MASS岸基操控人员可视作L3级别岸基操控人员的实习或见习期;L3级别岸基操控人员可视为船长或“外部船长”;L4级别MASS系统的优先程度高于人,岸基操控人员仅具有“监督”与作出“降级”决定的职责,不排除其成为新兴海事主体的可能性。 展开更多
关键词 岸基操控人员 MAss 法律地位 船员职责 船长
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Master CAM基于SINUMERIK 802S的后置处理程序设计 被引量:1
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作者 张进春 《四川职业技术学院学报》 2005年第2期105-106,共2页
Mastercam是数控加工中用得非常多的的一种CAD/CAM软件,但该软件未提供针对SINUMERIK802S系统的后置处理程序,本文在作者多年使用SINUMERIK802S系统经验的基础上,提供一种将Mastercam提供的FANUC0-MC系统的后置处理程序修改为SINUMERIK8... Mastercam是数控加工中用得非常多的的一种CAD/CAM软件,但该软件未提供针对SINUMERIK802S系统的后置处理程序,本文在作者多年使用SINUMERIK802S系统经验的基础上,提供一种将Mastercam提供的FANUC0-MC系统的后置处理程序修改为SINUMERIK802S系统专用后置处理程序的方法,对使用其它系统的数控铣床也有一定的借鉴作用. 展开更多
关键词 CAD/CAM master CAM 数控系统 sINUMERIK 802s 后置处理程序
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Optimization Algorithm for Operation Comfortability of Master Manipulator of Minimally Invasive Surgery Robot 被引量:2
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作者 李进华 王雪生 +3 位作者 邢元 王树新 李建民 梁科 《Transactions of Tianjin University》 EI CAS 2016年第2期95-104,共10页
To evaluate the operation comfortability in the master-slave robotic minimally invasive surgery(MIS), an optimal function was built with two operation comfortability decided indices, i.e., the center distance and volu... To evaluate the operation comfortability in the master-slave robotic minimally invasive surgery(MIS), an optimal function was built with two operation comfortability decided indices, i.e., the center distance and volume contact ratio. Two verifying experiments on Phantom Desktop and Micro Hand S were conducted. Experimental results show that the operation effect at the optimal relative location is better than that at the random location, which means that the optimal function constructed in this paper is effective in optimizing the operation comfortability. 展开更多
关键词 MIs robot master manipulator operation comfortability Phantom Desktop Micro Hand s
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LG产电MASTER-K120S
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作者 张云 《中国给水排水》 CAS CSCD 北大核心 2003年第8期3-3,共1页
关键词 晶体管 继电器 master—K120s产品 程序容量 机械设备
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The DNP: Knowledge and perceptions of students in an accelerated master’s program in nursing
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作者 Young-Me Lee Karyn Holm +2 位作者 Elizabeth Florez Megan Glauser Erin Haswell 《Open Journal of Nursing》 2013年第1期138-146,共9页
While the nursing community generally agrees that the Doctorate of Nursing Practice (DNP) degree will strengthen nursing as an academic discipline, there is little known about students’ perceptions of the advanced de... While the nursing community generally agrees that the Doctorate of Nursing Practice (DNP) degree will strengthen nursing as an academic discipline, there is little known about students’ perceptions of the advanced degree. Nursing students enrolled in an accelerated master’s program in nursing (N = 45) were surveyed to assess their knowledge of the DNP degree while also identifying the perceived effect a DNP might have on their careers, on nursing as a discipline, and on public perceptions of nursing practice. In this study, 51% of participants supported the transition to the DNP as the standard degree for practice nursing while 29% were opposed. The majority of participants (71%) planned to pursue an advanced practice nursing degree/certification with 81% of this group signifying that they would do so even if a DNP is required. The majority of participants agreed that the DNP will improve public perception of advanced practice nursing, but 71% thought the title of “doctor” would confuse patients. While current nursing students are generally informed of the upcoming DNP transition, there is disagreement regarding its implications for their careers and for the extent of public understanding. 展开更多
关键词 KNOWLEDGE Perception DNP NURsING students ACCELERATED masters PROGRAM in NURsING
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Analysis of the necessity of implementing the “dual specialty” training model from the perspective of nursing master students
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作者 Miao‑Qing ZHUANG Hong‑Fang CHEN Huan‑Ze LI 《Journal of Integrative Nursing》 2021年第1期30-35,共6页
Objective:The objective is to understand the current situation of clinical practice training for nursing master’s degree postgraduates,and discuss the necessity of implementing the“dual specialty”training mode for ... Objective:The objective is to understand the current situation of clinical practice training for nursing master’s degree postgraduates,and discuss the necessity of implementing the“dual specialty”training mode for nursing master’s degree postgraduates in China.Methods:Phenomenological research method was used to conduct semi‑structured in‑depth interviews with 10 nursing master’s degree graduates,and the data were analyzed by Colaizzi 7‑step analysis method.Results:Four topics were extracted:The objective of clinical practice training for nursing master degree postgraduates was not specific;the cultivation direction is not refined;the ability of clinical practice is weak;the research direction is not consistent with the required position.Conclusion:Implementing special double training mode can solve nursing professional master degree postgraduate education lacking the ability to service the needs of society,graduate students and the existing problems of specialist nurse training and the cultivation of“heavy science,light clinical practice”status quo and the effective way of guiding graduate students career planning,so the implementation of special“double”training mode is necessary. 展开更多
关键词 Dual specialty graduate student masters degree nurse specialist nursing education nursing talents
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基于主S-N曲线的装载机工作装置疲劳寿命评估
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作者 杨思源 宋绪丁 万一品 《机械设计》 CSCD 北大核心 2023年第12期15-22,共8页
针对装载机在使用过程中焊接结构的疲劳开裂问题,文中在其设计阶段进行了疲劳寿命评估。首先,建立了工作装置中连杆网格尺寸为10,5,2.5 mm的有限元模型,对其进行静力学求解并提取其焊趾节点的结构应力,结果表明,在这3种网格尺寸下结构... 针对装载机在使用过程中焊接结构的疲劳开裂问题,文中在其设计阶段进行了疲劳寿命评估。首先,建立了工作装置中连杆网格尺寸为10,5,2.5 mm的有限元模型,对其进行静力学求解并提取其焊趾节点的结构应力,结果表明,在这3种网格尺寸下结构应力大小的相对误差不超过1%,验证了主S-N曲线法对网格尺寸不敏感的特性。此外,建立额定载质量9 t的装载机工作装置在台架试验姿态下含有焊缝细节特征的三维有限元模型,采用实测得到的疲劳试验加速加载谱进行加载计算,获得焊线L1~L8的结构应力,根据各焊线所受的载荷模式及所处位置的板厚等参数计算得到了工作装置焊线L1~L8的疲劳寿命,并与采用FE-SAFE软件计算得到的8条焊线疲劳寿命进行对比,二者分析结果均在焊线L2(动臂板与动臂油缸连接处焊缝)处首先发生疲劳破坏,疲劳寿命分别为12376.3和9597.6 h;通过与采用IIW和BS 7608标准计算的寿命进行对比,分析了结果差异的原因,评估结果对改进装载机工作装置结构与焊缝优化提供了依据。 展开更多
关键词 装载机 工作装置 疲劳寿命 s-N曲线 FE-sAFE
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基于产教融合的全日制教育硕士“U-G-S”育人体系改革与探索——以学科教学(物理)专业为例 被引量:3
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作者 魏明 陈德良 +2 位作者 杨敏 杨正伦 骆远征 《贵州师范学院学报》 2023年第6期34-40,共7页
首先分析了现行全日制学科教学(物理)教育硕士育人体系存在的共性突出问题,再根据研究高校、政府、产业三者合作与利益关系的三重螺旋理论,建构了以人才培养质量为主线,对接物理基础教育行业需求,强化专业实践能力培养,突出高校、政府... 首先分析了现行全日制学科教学(物理)教育硕士育人体系存在的共性突出问题,再根据研究高校、政府、产业三者合作与利益关系的三重螺旋理论,建构了以人才培养质量为主线,对接物理基础教育行业需求,强化专业实践能力培养,突出高校、政府、中小学育人主体地位的“U-G-S”产教融合育人体系,并提出了“U-G-S”育人的实施路径:政府应转变角色定位,制定政策机制,推动各方主体主动参与,落实育人主体责任,发挥育人协调作用;高校应改革育人体系,完善育人机制,践行育人主体担当,发挥育人主导作用;中小学应认同育人价值,树立育人主体地位,履行育人主体职责,发挥育人深度参与作用。 展开更多
关键词 全日制教育硕士 学科教学(物理) 产教融合 “U-G-s”育人体系
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Master Artist Zhang Ding——The Pinnacle in the Ilistory of Modern China's Art
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《China & The World Cultural Exchange》 2002年第4期20-22,共3页
He designed the national emblem of thePeople’s depublic of China, was a primary painterof the mural in the Beijing Capital Airport, ananimator of "Ne Zha Makes Havoc of the Sea", arenowned cartoonist, one o... He designed the national emblem of thePeople’s depublic of China, was a primary painterof the mural in the Beijing Capital Airport, ananimator of "Ne Zha Makes Havoc of the Sea", arenowned cartoonist, one of the founders of 展开更多
关键词 ZHANG The Pinnacle in the Ilistory of Modern China’s Art master Artist Zhang Ding
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Ding Cong's Life in Black and White── A Great Master of Cartoon Art
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《China & The World Cultural Exchange》 2001年第1期20-22,共3页
关键词 A Great master of Cartoon Art Ding Cong’s Life in Black and White
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