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第十二届全国岩土力学数值分析与解析方法研讨会(第2号通知)
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《岩土工程学报》 EI CAS CSCD 北大核心 2016年第8期1364-1364,共1页
“第十二届全国岩土力学数值分析与解析方法研讨会”将于2016年8月12日-18日在甘肃兰州召开。本次会议主题为“一带一路战略下的岩土力学挑战与创新”。围绕一带一路战略下岩士力学面临新的机遇和挑战进行探讨,旨在推动中国岩土力学界... “第十二届全国岩土力学数值分析与解析方法研讨会”将于2016年8月12日-18日在甘肃兰州召开。本次会议主题为“一带一路战略下的岩土力学挑战与创新”。围绕一带一路战略下岩士力学面临新的机遇和挑战进行探讨,旨在推动中国岩土力学界学者学术交流和合作,共同探讨岩土力学新发展和新趋势。欢迎全国相关学科的专家、学者、科技工作者与工程技术人员踊跃注册会议、参加会议。 展开更多
关键词 岩土力学 解析方法 数值分析 工程技术人员 科技工作者 学术交流 相关学科 士力学
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康熙宫廷里的一缕机械论科学之光 在华耶稣会士介绍温度计的另一著作 被引量:5
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作者 石云里 《科学文化评论》 2013年第1期42-63,共22页
1669年,南怀仁制作了一架空气温度计进献给大清皇帝,并于1671年出版了《验气图说》一文,专门对该仪器的结构、用法和工作原理进行了简要说明。然而,在梵蒂冈教廷图书馆的入华耶稣会士档案中,却可以找到另外一部介绍温度计的手稿,题为《... 1669年,南怀仁制作了一架空气温度计进献给大清皇帝,并于1671年出版了《验气图说》一文,专门对该仪器的结构、用法和工作原理进行了简要说明。然而,在梵蒂冈教廷图书馆的入华耶稣会士档案中,却可以找到另外一部介绍温度计的手稿,题为《验气寒暑表说》。其中同时详细介绍了空气温度计和1657年之后发明的液体温度计的制作方法和工作原理,并且明确指出了空气温度计的缺陷。更重要的是,手稿中还系统引入伽利略到波义尔之间发展起来的气体静力学理论,完全是在新机械论物理学的基础上对温度计进行理论性讨论,与南怀仁借助于亚里士多德物理学,利用"自然厌恶真空"的概念来解释温度计工作原理的做法绝然不同。 展开更多
关键词 入华耶稣会温度计气体静力学热的运动论解释
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桩基码头岸坡整体稳定分析的修正 被引量:5
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作者 周锡礽 王乐芹 +1 位作者 王晖 朱福明 《岩石力学与工程学报》 EI CAS CSCD 北大核心 2005年第4期681-686,共6页
针对桩基码头的岸坡稳定问题,在考虑了桩本身的特性和桩土相互作用的条件下,提出一种修正基桩抗滑效应的桩基码头岸坡整体稳定的计算方法,同时,采用了遗传算法确定最危险滑动面及其对应的最小安全系数,由此对现有规范中的相关规定提出... 针对桩基码头的岸坡稳定问题,在考虑了桩本身的特性和桩土相互作用的条件下,提出一种修正基桩抗滑效应的桩基码头岸坡整体稳定的计算方法,同时,采用了遗传算法确定最危险滑动面及其对应的最小安全系数,由此对现有规范中的相关规定提出了修正。该方法考虑圆弧滑动面,采用简化Bishop法计算岸坡稳定的安全系数,并在其中考虑基桩的抗滑作用;采用一种基于极限分析理论的方法确定滑动面以上的土体对桩的侧推力,对不同的圆弧位置,由各基桩的埋置深度及其与岸坡具有不同的安全系数确定其所能发挥的最大抗滑力;通过相关工程算例的计算与比较,表明本方法简便、快捷,且结果良好。 展开更多
关键词 士力学 桩基码头 岸坡整体稳定 桩土相互作用 简化BISHOP法 遗传算法
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基坑开挖引起的地层位移及支撑轴力变化特征 被引量:3
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作者 周顺华 殷柏龄 佘才高 《地下空间》 CSCD 1998年第4期205-209,共5页
本文以试验和实测的基坑位移速率为出发点,建立了基坑开挖后的地层位移方程,并将诸多的施工因素简化为参数,从而获得位移时效方程及支护力(支撑轴力)的表达式。
关键词 地层位移 士力学 基坑开挖
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关于发展环境岩土工程的几个问题
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作者 张在明 《地基处理》 2001年第1期5-12,共8页
本文概要地分析了环境岩土工程作为学科分支产生和发展的依据,讨论了环境岩土工程在工作内容和方法方面的特点, 希望起到抛砖引玉的作用。
关键词 环境岩土工程 岩土工程 士力学
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第五届中日岩土工程会议通知
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《岩土工程学报》 EI CAS CSCD 北大核心 2012年第4期692-692,共1页
会议宗旨 第五届中日岩土工程研讨会将于2012年10月在拥有“天府之国”美称的旅游胜地中国成都召开。本次会议是继在北京(2003)、上海(2005)、重庆(2007)和冲绳(2010)成功召开的前四届会议之后的又一届学术研讨会。本届研讨会... 会议宗旨 第五届中日岩土工程研讨会将于2012年10月在拥有“天府之国”美称的旅游胜地中国成都召开。本次会议是继在北京(2003)、上海(2005)、重庆(2007)和冲绳(2010)成功召开的前四届会议之后的又一届学术研讨会。本届研讨会将致力于深入交流、学习中日两国在岩士力学与岩上工程领域的最新研究成果,探讨岩土力学与岩土工程的发展趋势, 展开更多
关键词 岩土工程 学术研讨会 旅游胜地 研究成果 发展趋势 岩土力学 士力学
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A review of the geomechanics aspects of a double fatality coal burst at Austar Colliery in NSW,Australia in April 2014 被引量:12
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作者 Hebblewhite Bruce Calvin Jim 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2017年第1期3-7,共5页
A coal burst occurred on 15 April, 2014 at the Austar Coal Mine, located west of Newcastle, NSW,Australia. The burst resulted in fatal injuries to two men working as part of the mining crew at the development face. At... A coal burst occurred on 15 April, 2014 at the Austar Coal Mine, located west of Newcastle, NSW,Australia. The burst resulted in fatal injuries to two men working as part of the mining crew at the development face. At the time, a continuous miner was being used to mine a longwall development gate road through heavily structured coal, at a depth of approximately 550 m. A number of pre-cursor bumps had occurred on previous shifts, emanating from the coal ribs of the roadway, in proximity to the coal face.This paper reviews the geological, geotechnical and mining conditions and circumstances leading up to the coal burst event; and presents and discusses the available evidence and possible interpretations relating to the geomechanical behaviour mechanisms that may have been critical factors in this incident. The paper also discusses some key technical and operational considerations of ground support systems and mining practices and strategies needed for operating in such conditions in the future. 展开更多
关键词 Underground coal mining Roadway development Strata controlCoal burst Coal geology Mine safety
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齿轮耦合的转子-轴承系统非线性动力特性的研究 被引量:31
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作者 张锁怀 李忆平 丘大谋 《机械工程学报》 EI CAS CSCD 北大核心 2001年第9期53-57,61,共6页
在考虑齿轮时变啮合刚度、齿侧间隙、脱齿、挤齿及齿背接触 等因素的情况下,建立了齿轮耦合的转子—滑动轴承系统的多自由度动力学模型。用数值方 法研究了该系统的质量不平衡响应,结果发现,由于齿轮时变啮合刚度的影响,随着转速的... 在考虑齿轮时变啮合刚度、齿侧间隙、脱齿、挤齿及齿背接触 等因素的情况下,建立了齿轮耦合的转子—滑动轴承系统的多自由度动力学模型。用数值方 法研究了该系统的质量不平衡响应,结果发现,由于齿轮时变啮合刚度的影响,随着转速的 增加,系统动力学响应首先由周期运动向准周期运动变化,当转速超过某一值时,系统的响应将由准周期运动发展为混沌运动;由于混沌运动,转子将沿齿轮中心线方向产生很大的变 形,脱齿、齿背接触及挤齿现象也将发生,可能导致系统产生破坏。 展开更多
关键词 齿侧间隙 时变啮合刚度 分岔 混沌 非线性动力学 齿轮耦合 转子-轴承系统
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Preliminary Experiences in Pheromone Trap Monitoring of Zeuzera pyrina (L.) in Syrian Apple Orchards
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作者 Adel Almanoufi Kamil Chanan +3 位作者 Majd Jamal Enrico De Lillo Eustachio Tarasco Anna Maria D'Onghia 《Journal of Agricultural Science and Technology(A)》 2012年第5期610-618,共9页
The leopard moth (Zeuzera pyrina L), is a cossid whose larvae bore into twigs, branches and trunks of various woody species, weakening and killing trees or shrubs. Recently it caused serious losses of apple trees in... The leopard moth (Zeuzera pyrina L), is a cossid whose larvae bore into twigs, branches and trunks of various woody species, weakening and killing trees or shrubs. Recently it caused serious losses of apple trees in Syria. The flight dynamics of Z. pyrina was monitored by pheromone traps (first time in Syria) compared to light trap device. This study was carried out in Damascus countryside, Qunaytirah and Sweida provinces during 2007-2008. Results indicated that the flight of moths during 2007 started in early June in Damascus countryside and Sweida provinces. The highest number of caught adults (the highest peak) was concentrated in mid July in Sweida province, whereas in Damascus countryside province there were a high peak in mid June and a small peak in early July. On the other hand, flight of moths during 2008 started in mid-May in Damascus countryside province while in Qunaytirah province started in early June. The highest number of caught adults (the highest peak) was concentrated in late July in Damascus countryside, whereas in Qunaytirah province there were small peaks in mid June and mid July. Experiments conducted to evaluate capturing efficiency of different types of traps (pheromone traps and light trap) demonstrated that there was significantly high difference within the trap devices, wherein Capta trap got the best results and caught more males than the others. 展开更多
关键词 SYRIA apple orchard leopard moth borer Zeuzera pyrina L. flight dynamics pheromone traps.
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Research of Carrying out Combat Teaching in NCO Academy
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作者 Zhongmin Liu ZelongZhou ShanchaoTu ZhuoYang 《International Journal of Technology Management》 2015年第7期101-102,共2页
Practical teaching is an important way to improve the capability of NCO students, trader the environment of combating, in order to improve the combat effectiveness of close to the war as the fundamental task of the te... Practical teaching is an important way to improve the capability of NCO students, trader the environment of combating, in order to improve the combat effectiveness of close to the war as the fundamental task of the teaching activities. Carry out the practical teaching is the objective requirement of cultivating high quality personnel, scientific and promote practical teaching is the embodiment of practicing the goal of a strong army NCO academies. In the face of the new situation and mission, how to carry out combat Sergeant college teaching, enhance the practical teaching level, training with the ability to win the qualified personnel in the future battlefield, becomes suspends in front of us to explore and solve the problem. 展开更多
关键词 TRAINING Actual Combat NCO
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Facing pressure: How should medical students or future doctors do?
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作者 HAO Lu ZHU Deyuan +1 位作者 ZHU Weiye ZHANG Yan 《Journal of Medical Colleges of PLA(China)》 CAS 2013年第4期252-256,共5页
On April 1st 2013, HUNG Yang, a medical master student in Fudan University, was poisoned by his roommate, LIN Senhao Unfortunately, HUANG died 15 days later. It's quite a shock to the whole society. We have to recons... On April 1st 2013, HUNG Yang, a medical master student in Fudan University, was poisoned by his roommate, LIN Senhao Unfortunately, HUANG died 15 days later. It's quite a shock to the whole society. We have to reconsider our education, and our expectancy to doctors. We have to ask ourselves "How to become a qualified doctor?"Leam to release the pressure from studies and lives; learn to defend ourselves from danger. Is it enough? No~ Whatever happened, never do harm to others. Medical humanity is the most important thing we should always remember 展开更多
关键词 Do no harm PRESSURE SELF-DEFENSE Medical humanity
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Does Aristotelian Magnanimity Exclude Women?
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作者 Mischa Beckett 《Journal of Philosophy Study》 2012年第7期463-474,共12页
This article studies whether Aristotle's understanding of magnanimity excludes women. I examine Aristotle's concept of the biological, moral, and intellectual capacities of women in theory and practice. Although Ari... This article studies whether Aristotle's understanding of magnanimity excludes women. I examine Aristotle's concept of the biological, moral, and intellectual capacities of women in theory and practice. Although Aristotle's biology describes key differences between the sexes, it does not exclude women from magnanimity. While the ethical and political writings also note key differences between men and women, they leave the theoretical possibility of attaining magnanimity open. Practically, the lack of leadership opportunities available to actual women may hinder the development of prudence, leading to an inability to achieve complete virtue and hence magnanimity. Thus, if women are unable to be magnanimous, this is due to practical political and familial arrangements, not to innate feminine defects. This finding provides a unique argument for feminine leadership and political participation. Truly exceptional women may need to actively seek out leadership opportunities and political involvement in order to complete their virtue 展开更多
关键词 ARISTOTLE Nicomachean Ethics POLITICS WOMEN VIRTUE MAGNANIMITY
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Abbe Guinot: Teaching Logic during the 18th Century to Increase Scientific Abilities
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作者 Olivier Perru 《Journal of Philosophy Study》 2015年第6期297-301,共5页
In 1778, Abbe Guinot, a priest native of Lorraine and professor in the seminary of Toul, published in Nancy the two volumes of his philosophical lectures, whose subtitle is "On Logic." This concerns a general philos... In 1778, Abbe Guinot, a priest native of Lorraine and professor in the seminary of Toul, published in Nancy the two volumes of his philosophical lectures, whose subtitle is "On Logic." This concerns a general philosophy of knowledge and a critic of philosophical systems. Guinot is interested in science and natural discoveries. He describes the organization of institutional science and appreciates the progress of sciences but he makes a distinction between scientific progress and philosophers' sophisms that he criticizes. In order to favor science and avoid philosophical errors, logic is essential in students' training. According to Guinot, logic allows us to extend our intellectual abilities, upliR our ideas, help our thought processes, and mature our reflection. However, this logic refers to the great book of nature written in mathematical language. Guinot thinks that scientific experiment is of the highest importance for accuracy of mind. This logic lecture is inspired by Aristotle but above all by Port-Royal Logic. It gives a place to Locke empiricism and it favors development of sciences. Abbe Guinot was a chaplain in the cathedral of Nancy; he emigrated in 1791. He came back in France during the Consulate and he died a few time later. 展开更多
关键词 LOGIC 18th century education Port-Royal Logic
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海洋工程中的力学问题
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作者 林同骥 浦群 《中国科学基金》 CSCD 1993年第2期92-98,共7页
本文概述“七五”国家自然科学基金重大项目“海洋工程中的力学问题”的社会、工程背景和学科特点,并扼要介绍13个子课题的主要研究成果。
关键词 海洋工程 力学问题 海洋环境 波浪载荷 粘性载荷 风载 结构动力分析 固定式平台 海洋士力学
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How Do Physicists Create Time?
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作者 Fernanda Samaniego 《Journal of Philosophy Study》 2017年第2期93-99,共7页
In the first part of this paper, different perspectives of time proposed in Aristotle's philosophy of nature, classic mechanics, thermodynamics, and the theory of relativity, will be presented. Later on, we explore t... In the first part of this paper, different perspectives of time proposed in Aristotle's philosophy of nature, classic mechanics, thermodynamics, and the theory of relativity, will be presented. Later on, we explore the phenomenological approach of duration by Henri Bergson and Mauro Dorato's naturalistic proposal, which defines the "present" moment based on neuroscientific experiments. In the second part of the paper, the topic of scientific creativity is introduced, paying particular attention to David Bohm's ideas. Finally, the previously analysed perspectives are used to answer the following question: How do physicists create time? 展开更多
关键词 naturalized time CREATIVITY Bohrn Dorato
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