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多资源公平调度器在Hadoop中的实现

集成技术 2012年第3期1卷 66-71页

作者：马肖燕洪爵中国科学院深圳先进技术研究院深圳518055

目前Hadoop的作业调度算法都是将系统中的多类资源抽象成单一资源,分配给作业的资源均是节点资源中固定大小的一部分,称为插槽。这类基于插槽的算法没有考虑到系统多资源的差异性,忽略了不同类型作业对资源的不同需求,因此导致系统在吞... 详细信息

目前Hadoop的作业调度算法都是将系统中的多类资源抽象成单一资源,分配给作业的资源均是节点资源中固定大小的一部分,称为插槽。这类基于插槽的算法没有考虑到系统多资源的差异性,忽略了不同类型作业对资源的不同需求,因此导致系统在吞吐量和平均作业完成时间上性能低下。本文研究了多资源环境下公平调度算法在Hadoop中的实现,设计了一种多资源公平调度器MFS(Multi-resource Fair Scheduler)。MFS采用了DRF(Dominant Resource Fairness)调度思想,使用需求向量来描述作业对各类资源的需求,并按照需求向量中各资源的大小给作业分配资源。MFS能更加充分有效地使用系统的各类资源,并能满足不同类型作业对资源的不同需求。实验表明相比于基于插槽的Fair Scheduler与Capacity Scheduler,MFS提高了系统的吞吐量,降低了平均作业完成时间。

关键词： Hadoop 作业调度算法插槽多资源公平

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《四库全书》拒收《聊斋志异》原因探析

三峡大学学报（人文社会科学版） 2011年第1期33卷 34-37页

作者：韩田鹿马肖燕河北大学文学院河北保定071002

清代乾隆皇帝亲自主持编纂的《四库全书》卷帙浩繁,是中国历史上规模最大的一部丛书,收录了从先秦到乾隆前期的许多重要古籍,几乎涵盖了中国所有的学术领域,但是却对当时已风行百年的《聊斋志异》"黜而不载",究其原因,有人从政治思想角... 详细信息

清代乾隆皇帝亲自主持编纂的《四库全书》卷帙浩繁,是中国历史上规模最大的一部丛书,收录了从先秦到乾隆前期的许多重要古籍,几乎涵盖了中国所有的学术领域,但是却对当时已风行百年的《聊斋志异》"黜而不载",究其原因,有人从政治思想角度来分析,有人从文学角度来分析,但都不为全面。本文试图从清代的文化政策、纪昀的个人原因以及编纂《四库全书》目的和采书标准三个方面来全面分析一下《四库全书》不收《聊斋志异》的原因。

关键词：《四库全书》《聊斋志异》文化政策纪昀圣谕

Focused-ion-beam assisted technique for achieving high pressure by uniaxial-pressure devices

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Chinese Physics B 2023年第4期32卷 622-626页

作者：刘迪王兴玉李泽众马肖燕李世亮 Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

Uniaxial pressure or strain can introduce a symmetry-breaking distortion on the lattice and may alter the ground states of a material. Compared to hydrostatic pressure, a unique feature of the uniaxial-pressure measurements is that a tensile force can be applied and thus a “negative” pressure can be achieved. In doing so, both ends of the sample are usually glued on the frame of the uniaxial-pressure device. The maximum force that can be applied onto the sample is sometimes limited by the shear strength of the glue, the quality of the interface between the sample and the glue, etc. Here we use focused ion beam to reduce the width of the middle part of the sample, which can significantly increase the effective pressure applied on the sample. By applying this technique to a home-made piezobender-based uniaxial-pressure device, we can easily increase the effective pressure by one or two orders of magnitude as shown by the change of the superconducting transition temperature of an iron-based superconductor. Our method thus provides a possible way to increase the upper limit of the pressure for the uniaxial-pressure devices.

关键词： uniaxial pressure iron-based superconductors focused-ion-beam

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小学数学教学设计的有效性分析

新教育时代电子杂志（学生版） 2018年第12期 165-165页

作者：马肖燕运城市盐湖区东郭中心校山西运城 044000

教学设计是开展实际教学活动的前提,教师在开展教学活动之前一定要对教学内容和形式进行合理设计,以保证教学活动能有效开展.本文以小学数学教学设计为主要分析内容,分别从重视学生的主体地位、结合课本内容、引入探究活动和合理选择教... 详细信息

教学设计是开展实际教学活动的前提,教师在开展教学活动之前一定要对教学内容和形式进行合理设计,以保证教学活动能有效开展.本文以小学数学教学设计为主要分析内容,分别从重视学生的主体地位、结合课本内容、引入探究活动和合理选择教学方法四个方面对小学数学教学设计的有效性进行分析.

关键词：小学数学教学设计有效性分析

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浅论“易安体”中的女性情怀

安徽文学(下半月) 2009年第8期 63-63页

作者：马肖燕贾雪彦河北大学研究生学院

李清照是我国宋代著名女词人,她的词从女性视角出发抒发了真实的女性情怀。她以女性独特的审美视角来观照外部世界和生命价值,把女性深切的内在生命体验化入词中,营造了一个温馨而丰厚的诗性天地。

关键词：易安体女性视角诗性天地

Anisotropic s-Wave Gap in the Vicinity of a Quantum Critical Point in Superconducting BaFe_(2)(As_(1-x)P_(x))_(2) Single Crystals:A Study of Point-Contact Spectroscopy

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Chinese Physics Letters 2024年第4期41卷 118-123页

作者：詹红星林玉尺赵宇清左海艳王兴玉马肖燕李春红罗会仟陈根富李世亮任聪 School of Physics and Astronomy Yunnan UniversityKunming 650500China Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Yunnan Key Laboratory for Electromagnetic Materials and Devices Yunnan UniversityKunming 650500China

We report on soft c-axis point-contact Andreev reflection(PCAR)spectroscopy combining with resistivity measurements on BaFe_(2)(As_(0.7)P_(0.3))_(2),to elucidate the superconducting gap structure in the vicinity of the quantum critical point.A double peak at the gap edge plus a dip feature at zero-bias has been observed on the PCAR spectra,indicative of the presence of a nodeless gap in BaFe_(2)(As_(0.7)P_(0.3))_(2).Detailed analysis within a sophisticated theoretical model reveals an anisotropic gap with deep gap *** PCARs also feature additional structures related to the electron-bosonic coupling *** the extracted superconducting energy gap value,a characteristic bosonic energy Ω_(b) and its temperature dependence are obtained,comparable with the spin-resonance energy observed in neutron scattering *** results indicate a magnetism-driven quantum critical point in the BaFe_(2)(As_(1-x)P_(x))_(2) system.

关键词： quantum critical resistivity

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展现视角与空间叙事的大禹文化符号研究

文史杂志 2025年第1期235卷 69-74页

作者：肖燕罗颖西南民族大学图书馆西南民族大学图书馆古籍部

在中华民族的历史上,因成功治水并创建中国历史上第一个奴隶制王朝的大禹,几千年来始终为华夏儿女所敬仰和崇拜,在中华传统文化中具有持续的影响力与生命力。大禹的伟业除有大量古今文本记述以外,还有画像、雕像、禹迹、禹庙等视角与空... 详细信息

在中华民族的历史上,因成功治水并创建中国历史上第一个奴隶制王朝的大禹,几千年来始终为华夏儿女所敬仰和崇拜,在中华传统文化中具有持续的影响力与生命力。大禹的伟业除有大量古今文本记述以外,还有画像、雕像、禹迹、禹庙等视角与空间的叙事,与前者共同构成关于大禹的民族集体记忆的一部分,成为中华民族民族精神气质的一部分。在华夏文明的进步与发展中,大禹叙事符号亦在不断地传承与创新,大禹形象的审美价值与精神价值在多方面得到进一步的体现。对展现视角与空间叙事的大禹文化符号进行整理研究,无疑具有重要的历史和现实意义。

关键词：艺术画像视角空间叙事大禹文化

Nonlinear uniaxial pressure dependence of the resistivity in Sr_(1-x)Ba_xFe_(1.97)Ni_(0.03)As_2

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Chinese Physics B 2018年第8期27卷 511-516页

作者： Hui-Can Mao Dong-Liang Gong Xiao-Yan Ma Hui-Qian Luo Yi-Feng Yang Lei Shan and Shi-Liang Li Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Collaborative Innovation Center of Quantum Matter Beijing 100190China

Nematic order and its fluctuations have been widely found in iron-based superconductors. Above the nematic order transition temperature, the resistivity shows a linear relationship with the uniaxial pressure or strain along the nematic direction and the normalized slope is thought to be associated with nematic susceptibility. Here we systematically studied the uniaxial pressure dependence of the resistivity in Sr1 _xBaxFel.97Nio.03As2, where nonlinear behaviors are observed near the nematic transition temperature. We show that it can be well explained by the Landau theory for the second-order phase transitions considering that the external field is not zero. The effect of the coupling between the isotropic and nematic channels is shown to be negligible. Moreover, our results suggest that the nature of the magnetic and nematic transitions in Srl xBaxFe2As2 is determined by the strength of the magnetic-elastic coupling.

关键词： iron-based superconductors nematic order uniaxial pressure resistivity

Nonlocal Effects of Low-Energy Excitations in Quantum-Spin-Liquid Candidate Cu_(3)Zn(OH)_(6)FBr

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Chinese Physics Letters 2021年第9期38卷 96-100页

作者： Yuan Wei Xiaoyan Ma Zili Feng Yongchao Zhang Lu Zhang Huaixin Yang Yang Qi Zi Yang Meng Yan-Cheng Wang Youguo Shi Shiliang Li Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Institute for Solid State Physics University of TokyoKashiwa 277-8581Japan Yangtze River Delta Physics Research Center Co. Ltd.Liyang 213300China State Key Laboratory of Surface Physics Department of PhysicsFudan UniversityShanghai 200433China Department of Physics and HKU-UCAS Joint Institute of Theoretical and Computational Physics The University of Hong KongPokfulam RoadHong KongChina School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China Songshan Lake Materials Laboratory Dongguan 523808China

We systematically study the low-temperature specific heats for the two-dimensional kagome antiferromagnet,Cu_(3)Zn(OH)_(6)*** specific heat exhibits a T1.7 dependence at low temperatures and a shoulder-like feature above *** construct a microscopic lattice model of Z_(2) quantum spin liquid and perform large-scale quantum Monte Carlo simulations to show that the above behaviors come from the contributions from gapped anyons and magnetic ***,we find the entropy associated with the shoulder decreases quickly with grain size d,although the system is paramagnetic to the lowest *** this can be simply explained by a core-shell picture in that the contribution from the interior state disappears near the surface,the 5.9-nm shell width precludes any trivial *** a large length scale signifies the coherence length of the nonlocality of the quantum entangled excitations in quantum spin liquid candidate,similar to Pippard’s coherence length in *** approach therefore offers a new experimental probe of the intangible quantum state of matter with topological order.

关键词： temperature quantum trivial