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Research on the knee region of cosmic ray by using a novel type of electron-neutron detector array

Frontiers of physics 2024年第4期19卷 13-24页

作者： Bing-Bing Li Xin-Hua Ma Shu-Wang Cui Hao-Kun Chen Tian-Lu Chen Danzengluobu Wei Gao Hai-Bing Hu Denis Kuleshov kirill Kurinov Hu Liu Mao-Yuan Liu Ye Liu Da-Yu Peng Yao-Hui Qi Oleg Shchegolev Yuri Stenkin Li-Qiao Yin Heng-Yu Zhang Liang-Wei Zhang College of Physics Hebei Normal UniversityShijiazhuang 050024China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China TIANFU Cosmic Ray Research Center Chengdu 610000China College of Science Tibet UniversityLhasa 850000China Key Laboratory of Comic Rays Ministry of EducationTibet UniversityLhasa 850000China Institute for Nuclear Research of the Russian Academy of Sciences Moscow 117312Russia School of Physical Science and Technology Southwest Jiaotong UniversityChengdu 610031China School of Management Science and Engineering Hebei University of Economics and BusinessShijiazhuang 050061China Moscow Institute of Physics and Technology Moscow 141700Russia

By accurately measuring composition and energy spectrum of cosmic ray,the origin problem of so called“knee”region(energy>one PeV)can be ***,up to the present,the results of the spectrum in the knee region obtained by several previous experiments have shown obvious differences,so they cannot give effective evidence for judging the theoretical models on the origin of the ***,the Large High Altitude Air Shower Observatory(LHAASO)has reported several major breakthroughs and important results in astro-particle physics *** on its advantages of wide-sky survey,high altitude location and large area detector arrays,the research content of LHAASO experiment mainly includes ultra high-energy gamma-ray astronomy,measurement of cosmic ray spectra in the knee region,searching for dark matter and new phenomena of particle physics at higher *** electron and thermal neutron detector(EN-Detector)is a new scintillator detector which applies thermal neutron detection technology to measure cosmic ray extensive air shower(EAS).This technology is an extension of *** EN-Detector Array(ENDA)can highly efficiently measure thermal neutrons generated by secondary hadrons so called“skeleton”of *** this paper,we perform the optimization of ENDA configuration,and obtain expectations on the ENDA results,including thermal neutron distribution,trigger efficiency and capability of cosmic ray composition *** obtained real data results are consistent with those by the Monte Carlo simulation.

关键词： cosmic ray EAS knee region LHAASO ENDA

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Exploring van der Waals materials with high anisotropy:geometrical and optical approaches

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Light(Science & Applications) 2024年第4期13卷 645-653页

作者： Aleksandr S.Slavich Georgy A.Ermolaev Mikhail K.Tatmyshevskiy Adilet N.Toksumakov Olga G.Matveeva Dmitriy V.Grudinin kirill V.Voronin Arslan Mazitov Konstantin V.Kravtsov Alexander V.Syuy Dmitry M.Tsymbarenko Mikhail S.Mironov Sergey M.Novikov Ivan Kruglov Davit A.Ghazaryan Andrey A.Vyshnevyy Aleksey V.Arsenin Valentyn S.Volkov Kostya S.Novoselov Moscow Center for Advanced Studies Kulakova str.20Moscow 123592Russia. Emerging Technologies Research Center XPANCEOInternet CityEmmay TowerDubaiUnited Arab Emirates. Donostia International Physics Center(DIPC) Donostia/San-Sebastián 20018Spain. Institute of Materials Ecole Polytechnique Federale de Lausanne1015 LausanneSwitzerland. Department of Chemistry Lomonosov Moscow State UniversityMoscow 119991Russia. Laboratory of Advanced Functional Materials Yerevan State UniversityYerevan 0025Armenia. National Graphene Institute(NGI) University of ManchesterManchester M139PLUK. Department of Materials Science and Engineering National University of SingaporeSingapore 03-09 EASingapore. Institute for Functional Intelligent Materials National University of Singapore117544 SingaporeSingapore

The emergence of van der Waals(vdW)materials resulted in the discovery of their high optical,mechanical,and electronic anisotropic properties,immediately enabling countless novel phenomena and *** success inspired an intensive search for the highest possible anisotropic properties among vdW ***,the identification of the most promising among the huge family of vdW materials is a challenging quest requiring innovative ***,we suggest an easy-to-use method for such a survey based on the crystallographic geometrical perspective of vdW materials followed by their optical *** our approach,we found As2S3 as a highly anisotropic vdW *** demonstrates high in-plane optical anisotropy that is~20%larger than for rutile and over two times as large as calcite,high refractive index,and transparency in the visible range,overcoming the century-long record set by *** these benefits,As2S3 opens a pathway towards nextgeneration nanophotonics as demonstrated by an ultrathin true zero-order quarter-wave plate that combines classical and the Fabry–Pérot optical phase ***,our approach provides an effective and easy-to-use method to find vdW materials with the utmost anisotropic properties.

关键词： anisotropy anisotropic high

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Architecture of the Graphics System for Embedded Real-Time Operating Systems

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Tsinghua Science and Technology 2023年第3期28卷 541-551页

作者： Alexander Giatsintov kirill Mamrosenko Pavel Bazhenov Center of Visualization and Sattelite Information Technologies SRISA RASMoscow 117218Russia

This paper presents a new architecture of a graphics system for microkernel operating systems,including real-time operating *** following major parts of the architecture are presented:a user-level subsystem responsible for interaction with user applications;a bottom-level subsystem providing the functionality for graphics drivers,such as managing graphics output,video memory management,etc.;a kernel-level subsystem providing interaction with the kernel,and performing low-level operations,such as working with physical memory,processes,*** mechanisms of interaction of user applications with the user level of the graphics system,as well as interaction of the different levels of the graphics subsystem are *** paper pays much attention to various approaches to testing:the use of unit testing,testing using hardware and software *** important characteristic of a graphics system is its performance,in particular the performance of low-level operations such as memory allocation:the developed architecture suggests using a separate memory allocator which is faster than standard memory allocation *** of the performances of graphics system implementation for microkernel real-time operating system and graphics server Xorg is presented,showing significant superiority of the proposed architecture in a number of work scenarios.

关键词： operating system graphics system visualization system programming real-time operating system(RTOS) real-time

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Improving on Linear Scan Register Allocation

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International Journal of Automation and computing 2018年第2期15卷 228-238页

作者： Shahrzad Kananizadeh kirill Kononenko Department of Computer Science Saarland University Saarbrticken Germany Ecole Normale Superieure/French Institute for Research in Computer Science and Automation (INRIA) Paris France

Register allocation is a major step for all compilers. Various register allocation algorithms have been developed over the dec- ades. This work describes a new class of rapid register allocation algorithms and presents experimental data on their behavior. Our re- search encourages the avoidance of graphing and graph-coloring based on the fact that precise graph-coloring is nondeterministic poly- nomial time-complete （NP-complete）, which is not suitable for real-time tasks. In addition, practical graph-coloring algorithms tend to use polynomial-time heuristics. In dynamic compilation environments, their super linear complexity makes them unsuitable for register allocation and code generation. Existing tools for code generation and register allocation do not completely fulfill the requirements of fast compilation. Existing approaches either do not allow for the optimization of register allocation to be achieved comprehensively with a sufficient degree of performance or they require an unjustifiable amount of time and/or resources. Therefore, we propose a new class of register allocation and code generation algorithms that can be performed in linear time. These algorithms are based on the mathematic- al foundations of abstract interpretation and the computation of the level of abstraction. They have been implemented in a specialized library for just-in-time compilation. The specialization of this library involves the execution of common intermediate language （CIL） and low level virtual machine （LLVM） with a focus on embedded systems.

关键词： Register allocation just-in-time compilation code generation static analysis dynamic analysis.

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Meta-optics and bound states in the continuum

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Science Bulletin 2019年第12期64卷 836-842页

作者： kirill Koshelev Andrey Bogdanov Yuri Kivshar Nonlinear Physics Centre Australian National UniversityCanberra ACT 2601Australia ITMO University St. Petersburg 197101Russia

We discuss the recent advances in meta-optics and nanophotonics associated with the physics of bound states in the continuum(BICs). Such resonant states appear due to a strong coupling between leaky modes in optical guiding structures being supported by subwavelength high-index dielectric Mieresonant nanoantennas or all-dielectric metasurfaces. First, we review briefly very recent developments in the BIC physics in application to isolated subwavelength particles. We pay a special attention to novel opportunities for nonlinear nanophotonics due to the large field enhancement inside the particle volume creating the resonant states with high-quality(high-Q) factors, the so-called quasi-BIC, that can be supported by the subwavelength particles. Second, we discuss novel applications of the BIC physics to alldielectric optical metasurfaces with broken-symmetry meta-atoms when tuning to the BIC conditions allows to enhance substantially the Q factor of the flat-optics dielectric structures. We also present the original results on nonlinear high-Q metasurfaces and predict that the frequency conversion efficiency can be boosted dramatically by smart engineering of the asymmetry parameter of dielectric metasurfaces in the vicinity of the quasi-BIC regime.

关键词： Bound states in the continuum Meta-optics Second-harmonic generation Nanoresonator Metasurfaces

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理解中国:作为研究方法的西夏学——索罗宁教授访谈录

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国际汉学 2024年第5期 141-150页

作者：汪静茹 [俄]索罗宁住房和城乡建设部信息中心中国人民大学国学院

索罗宁教授是中国人民大学国学院有口皆碑的好老师,为人幽默风趣,为学一腔赤诚,为师循循善诱。多年来他一直致力西夏学研究,在整理并分析西夏汉传和藏传、汉藏圆融佛教文献方面耗费了大量心血,为西夏译本和辽金元时期的汉藏传佛教史研... 详细信息

索罗宁教授是中国人民大学国学院有口皆碑的好老师,为人幽默风趣,为学一腔赤诚,为师循循善诱。多年来他一直致力西夏学研究,在整理并分析西夏汉传和藏传、汉藏圆融佛教文献方面耗费了大量心血,为西夏译本和辽金元时期的汉藏传佛教史研究提供了翔实的文献资料。他从“汉藏圆融”的传播路径中获得中西圆融的启示,为推动西夏学乃至中国国学不断走向更加科学、更加前沿的阵地作出了较大的贡献。

关键词：西夏学辽金元时期中国人民大学幽默风趣文献资料佛教文献传播路径中国国学

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爱神的诞生！被神话选中的海滨小城

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环球人文地理 2024年第15期 144-152页

作者：刘梦缘 kirill_makarov Serg Zastavkin Denis Gladkiy DedMityay dudlajzov Alexanderkonsta Anatoliy Sadovskiy Lisichkin Grispb Lukas 摄图网

走进帕福斯，仿佛穿越时光隧道，来到古希腊与罗马帝国的辉煌时代，听见爱神阿芙洛狄忒的低语。在塞浦路斯西南部，距离利马索尔港口约50公里处，隐藏着一座古老的海滨小城——帕福斯（Paphos）。希腊神话中，塞浦路斯国王皮格马利翁不...

走进帕福斯，仿佛穿越时光隧道，来到古希腊与罗马帝国的辉煌时代，听见爱神阿芙洛狄忒的低语。在塞浦路斯西南部，距离利马索尔港口约50公里处，隐藏着一座古老的海滨小城——帕福斯（Paphos）。希腊神话中，塞浦路斯国王皮格马利翁不爱凡间女子，独爱由自己雕刻的象牙少女像，并如同对待真人那样，每日为象牙少女沐浴更衣。爱神阿芙洛狄忒（维纳斯）被国王的真情打动，赋予了雕像生命，让他们结为夫妻。国王和象牙少女生下的孩子叫做帕福斯，而专门供奉爱神阿芙洛狄忒的城市，也命名为帕福斯。

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Female answer specificity to male drumming calls in three closely related species of the stonefly genus Zwicknia (Plecoptera: Capniidae)

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Insect Science 2021年第1期28卷 215-223页

作者： kirill Mark Orci David Muranyi MTA-ELTE-MTM Ecology Research Group Hungarian Academy of SciencesEotvos Lorand University and the Hungarian Natural History MuseumBudapestHungary Department of Zoology Eszterhazy Karoly UniversityEgerHungary Department of Zoology Hungarian Natural History MuseumBudapestHungary

This study examines the rate of female answers to conspecific versus heterospecific male vibratory calls in three,closely related stonefly species:Zwicknia bifrons,***,and *** a previous study those three species were recognized on the basis of their distinct male drumming calls along with differences in genital morphology and genetic *** this study no-choice playback experiments using original male call samples from each species were performed,and the answer rate of females to con・specific and heterospecific signal variants was *** effect logistic regression models were used to test if male call species identity had a statistically significant effect on female answer *** answered conspecific male calls with significantly higher probability than heterospecific calls in all the three examined species,suggesting that the divergence of vibrational communication can be an important component of the prezygotic isolation between ***,but well detectable responsiveness to heterospecific calls was observable between *** and ***,the two species closest to each other regarding mitochondrial genetic divergence and male call pattern ***,our results are most congruent with a tight,gradual coevolution of male calls and female preferences.

关键词： biotremology drumming call Plecoptera reproductive isolation species recognition vibrational communication

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中俄关系的五大成就和五项前景

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俄罗斯研究 2024年第2期 3-18页

作者：基里尔·巴巴耶夫封帅(翻译) 俄罗斯科学院中国与当代亚洲研究所上海国际问题研究院国际战略与安全研究所

在过去的20多年时间里,在伙伴关系的新框架内,中俄关系得到了快速发展,已经成为当代世界新型双边合作关系的最佳范例之一。中俄战略协作伙伴关系建立在五大支柱之上:两国领导人紧密的个人联系,中俄两国对于人类未来享有共同愿景,通过彻... 详细信息

在过去的20多年时间里,在伙伴关系的新框架内,中俄关系得到了快速发展,已经成为当代世界新型双边合作关系的最佳范例之一。中俄战略协作伙伴关系建立在五大支柱之上:两国领导人紧密的个人联系,中俄两国对于人类未来享有共同愿景,通过彻底解决边界问题建立完美邻国关系,持续提升的双边经济合作,以及文化亲近性和历史记忆。为了进一步推动中俄关系的发展,中俄两国政府和社会各界仍需继续努力,争取实现五项任务。这五项前瞻性任务包括推动“一带一路”倡议与欧亚经济联盟的对接,在亚欧之间创建全方位的物流和交通运输路线,推动金融基础设施的建设,推动上海合作组织和金砖国家机制的扩大,以及加强人文交流来更好地了解彼此。

关键词：中俄关系中俄战略协作 “一带一路”倡议新型国际关系

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Pressure Boundary Conditions for Blood Flows

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Chinese Annals of Mathematics,Series B 2015年第5期36卷 829-842页

作者： kirill P.GOSTAF Olivier PIRONNEAU Department of Mathematics Simon Fraser University Laboratoire Jacques-Louis Lions Université Pierre et Marie Curie

Simulations of blood flows in arteries require numerical solutions of fluidstructure interactions involving Navier-Stokes equations coupled with large displacement visco-elasticity for the *** the various simplifications which have been proposed, the surface pressure model leads to a hierarchy of simpler models including one that involves only the pressure. The model exhibits fundamental frequencies which can be computed and compared with the pulse. Yet unconditionally stable time discretizations can be constructed by combining implicit time schemes with Galerkin-characteristic discretization of the convection terms in the Navier-Stokes equations. Such problems with prescribed pressure on the walls will be shown to be efficient and accurate as an approximation of the full fluid structure interaction problem.

关键词： Fluid-structure interaction Compliant walls Finite element method Navier-Stokes equations Blood flow

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