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Electron and positron spectra in three-dimensional spatial-dependent propagation model

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Chinese Physics C 2020年第8期44卷 193-206页

作者： Zhen Tian Wei Liu Bo Yang Xue-Dong Fu Hai-Bo Xu yu-hua yao Yi-Qing Guo Institute of Applied Physics and Computational Mathematics Chinese Academy of EngineeringBeijing 100094China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China College of Physics Sichuan UniversityChengdu 610065China

The spatial-dependent propagation(SDP)model has been demonstrated to account for the spectral hardening of both primary and secondary Cosmic Rays(CRs)nuclei above about 200 *** this work,we further apply this model to the latest AMS-02 observations of electrons and *** investigate the effect of different propagation models,both homogeneous diffusion and SDP are *** contrast to the homogeneous diffusion,SDP brings about harder spectra of background CRs and thus enhances background electron and positron fluxes above tens of ***,the SDP model could better reproduce both electron and positron energy spectra when introducing a local *** influence of the background source distribution is also investigated,where both axisymmetric and spiral distributions are *** find that considering the spiral distribution leads to a larger contribution of positrons for energies above multi-GeV than the axisymmetric *** the SDP model,when including a spiral distribution of sources,the all-electron spectrum above TeV energies is thus naturally *** the meantime,the estimated anisotropies in the all-electrons spectrum show that in contrary to the homogeneous diffusion model,the anisotropy under SDP is well below the observational limits set by the Fermi-LAT experiment,even when considering a local source.

关键词： cosmic rays ISM:supernova remnants spiral arms and galactic disk

EFFECT OF Y2O3 ON THE PROPERTY OF NiO/Al2O3 CATALYST FOR PARTIAL OXIDATION OF METHANE

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Journal of Energy Chemistry 1994年第4期 453-458页

作者： GAO Xiang CHENG Ji-yuan FU Xi-yu WANG hua-Ming yao Ruo-BingChengdu Institute of Organic Chemistry, Academia Sinica Chengdu, Sichuan 610015

The effects of YOon the property of NiO/AlOcatalyst forcatalytic partial oxidation of methane were investigated in a continuous flowfixed bed reactor（20 mm i.d.,860 mm long）.The catalysts werecharacterized by XRD and pore *** comparison,similar studieswere carried out for the catalysts loaded with Zr or W *** results showthat different additives and impregnating methods could greatly affect thedispersion of component *** catalytic activity,the selectivity to CO andthe stability are improved because of the less facile interation between thesupport and nickel oxide,greater surface area and better dispersion of metalNi for NiO/AlOcatalyst modified by YO.

关键词： NiO EFFECT OF Y2O3 ON THE PROPERTY OF NiO/Al2O3 CATALYST FOR PARTIAL OXIDATION OF METHANE COI XRD Al

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企业会计信息化发展策略研究

商业时代 2011年第14期 87-88页

作者：于耀华洛阳理工学院会计学系河南洛阳471003

会计工作与信息化建设密切联系,会计信息化是如今信息社会的产物,是未来会计的发展方向所在。通过全面推进会计信息化的建设工作,能够更进一步提升我国企业会计工作水平,促进经济健康快速地发展。文章归纳总结了我国企业会计信息化的现... 详细信息

会计工作与信息化建设密切联系,会计信息化是如今信息社会的产物,是未来会计的发展方向所在。通过全面推进会计信息化的建设工作,能够更进一步提升我国企业会计工作水平,促进经济健康快速地发展。文章归纳总结了我国企业会计信息化的现状、水平和存在的问题,并初步提出了我国企业会计信息化发展的方向和策略。

关键词：会计信息化会计电算化信息技术

Nanostructured ZnO/BiVO_(4)I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 488-497页

作者： Yiling Li Xiaoyao yu Yingjie Zhou yao Lin Ying Wu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China

BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step *** resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure *** 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and *** enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole ***,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active ***,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.

关键词： piezoelectric catalytic heterojunction dye degradation ultrasonic vibration

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移动终端声音增强菜单交互研究

计算机应用研究 2011年第10期28卷 3742-3745页

作者：喻耀华刘正捷宁波工程学院理学院浙江宁波315211 大连海事大学信息科学技术学院中国欧盟可用性研究中心辽宁大连116026

为了提高移动交互的可用性,进行了用非语音声音来增强移动终端菜单交互的研究,首先设计了一个移动终端的声音增强菜单,然后通过与相应的视觉菜单的对比实验来研究其是否能提高可用性。结果显示,声音增强移动菜单具有更好的可用性,声音... 详细信息

为了提高移动交互的可用性,进行了用非语音声音来增强移动终端菜单交互的研究,首先设计了一个移动终端的声音增强菜单,然后通过与相应的视觉菜单的对比实验来研究其是否能提高可用性。结果显示,声音增强移动菜单具有更好的可用性,声音增强移动菜单可以显著减少任务完成时间、降低工作负荷和脑力负荷。这说明有效利用声音增强移动菜单交互技术可以提高移动终端菜单交互的可用性。

关键词：移动交互菜单交互声音增强菜单非语音声音

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听觉显示研究与应用

计算机科学 2008年第6期35卷 272-275页

作者：喻耀华刘正捷大连海事大学计算机学院中国欧盟可用性研究中心大连116026

听觉显示是应用声音表示信息,通过听觉来显示和传递信息。本文首先介绍了听觉显示的研究背景,回顾了听觉显示的研究历史和国内外的研究现状,指出了听觉显示方面主要的研究领域;其次通过对听觉显示用户界面研究及可听化研究的分析,对当... 详细信息

听觉显示是应用声音表示信息,通过听觉来显示和传递信息。本文首先介绍了听觉显示的研究背景,回顾了听觉显示的研究历史和国内外的研究现状,指出了听觉显示方面主要的研究领域;其次通过对听觉显示用户界面研究及可听化研究的分析,对当前听觉显示研究的发展进行了总结;最后对听觉显示及其应用研究前景提出了一些展望,旨在为今后的研究和应用提供一点思路。

关键词：听觉显示听觉界面可听化耳标听标非语音声音

On the normalization for the leading eigenvalues of the L/L matrix

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On the normalization for the leading eigenvalues of the L/L ...

Application of deep learning methods combined with physical background in wide field of view imaging atmospheric Cherenkov telescopes

华东六省一市生物化学与分子生物学学会2006年学术交流会

作者： yu-hua yao, Xu-ying Nan, Ping-an He yao-zhou Zhang (College of Life Sciences, Zhejiang Sci-Tec University, Hangzhou 310018,China)

We addressed the problem on the normalization of leading eigenvalue of the L/L matrix and state that the normalized leading eigenvalue of L/L matrix depends somewhat on N (the length of the sequence) - hence when one compares L/L matrices of different N this has to be taken into account. We claim that the method based on Euclidean distance of vectors characterizing DNA sequences is "less than perfect" if compared with the method using the correlation angle between vectors characterizing DNA sequences. In addition, the normalization of the leading eigenvalues of the L/L matrix depends on the used graphical system or model, in particular it depends on the distribution and character of li, j, the elements of the L/L matrix. The leading eigenvalue of a matrix is an important matrix invariant , the leading eigenvalue of the L/L matrix has been interpreted as an index of folding of a structure, and it is the descriptor used widely in the similarity analysis of the DNA (RNA or protein) sequences, an relatively in-depth study for it is necessary and significative.

关键词： Similarity analysis Normalization Leading eigenvalues L/L matrix

来源： cnki会议评论

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Nuclear Science and Techniques 2024年第4期35卷 208-220页

作者： Ao-Yan Cheng Hao Cai Shi Chen Tian-Lu Chen Xiang Dong You-Liang Feng Qi Gao Quan-Bu Gou Yi-Qing Guo Hong-Bo Hu Ming-Ming Kang Hai-Jin Li Chen Liu Mao-yuan Liu Wei Liu Fang-Sheng Min Chu-Cheng Pan Bing-Qiang Qiao Xiang-Li Qian Hui-Ying Sun yu-Chang Sun Ao-Bo Wang Xu Wang Zhen Wang Guang-Guang Xin yu-hua yao Qiang yuan Yi Zhang School of Physics and Technology Wuhan UniversityWuhan 430072China School of Physics and Astronomy Yunnan UniversityKunming 650091China Ministry of Education The Key Laboratory of Cosmic Rays(Tibet University)Lhasa 850000China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences 19 A Yuquan RoadShijingshan DistrictBeijing 100049China College of Physics Sichuan UniversityChengdu 610064China School of Intelligent Engineering Shandong Management UniversityJinan 250357China Tsung‑Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China Suzhou Aerospace Information Research Institute Suzhou 215123China College of Physics Chongqing UniversityNo.55 Daxuecheng South RoadHigh‑tech DistrictChongqing 401331China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210008China

The High Altitude Detection of Astronomical Radiation(HADAR)experiment,which was constructed in Tibet,China,combines the wide-angle advantages of traditional EAS array detectors with the high-sensitivity advantages of focused Cherenkov *** objective is to observe transient sources such as gamma-ray bursts and the counterparts of gravitational *** study aims to utilize the latest AI technology to enhance the sensitivity of HADAR *** datasets and models with distinctive creativity were constructed by incorporating the relevant physical theories for various *** models can determine the type,energy,and direction of the incident particles after careful *** obtained a background identification accuracy of 98.6%,a relative energy reconstruction error of 10.0%,and an angular resolution of 0.22°in a test dataset at 10 *** findings demonstrate the significant potential for enhancing the precision and dependability of detector data analysis in astrophysical *** using deep learning techniques,the HADAR experiment’s observational sensitivity to the Crab Nebula has surpassed that of MAGIC and *** energies below 0.5 TeV and remains competitive with conventional narrow-field Cherenkov telescopes at higher *** addition,our experiment offers a new approach for dealing with strongly connected,scattered data.

关键词： VHE gamma-ray astronomy HADAR Deep learning Convolutional neural networks

100 TeV diffuse γ-rays observation by YangBaJing Hybrid Array

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Radiation Detection Technology and Methods 2020年第3期4卷 392-398页

作者： Jian-Cheng He yu-hua yao Zhen Wang Tian-Lu Chen Dan-Zeng-Luo-Bu Cun-Feng Feng Youliang Feng Qi Gao Yi-Qin Guo Ying-Ying Guo Hong-Bo Hu Xing-Tao huang Cheng Liu Mao-yuan Liu Yi-Bin Pan Bing-Qiang Qiao Guang-Guang Xin Xue-yao Zhang Yi Zhang Shi-Ping Zhao Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Beijing 100049China University of Chinese Academy of Sciences(UCAS) Beijing 100049China College of Physics Sichuan UniversityChengdu 610064China Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China Physics Department of Science School Tibet UniversityLhasa 850000China Institute of Frontier and Interdisciplinary Science Shandong UniversityJinan 250100China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of Sciences(CAS)Nanjing 210008China Department of Physics University of Wisconsin-Madison1150 University ave MadisonMadisonWI 53706USA School of Physics and Technology Wuhan UniversityWuhan 430072China

Purpose Cosmic rays up to PeV energy are believed to be generated in our galaxy.γ-rays at 100TeV energies are important probe to identify ***,γ-rays contain additional information on the propagation of the galactic cosmic *** Diffuseγ-rays originating from the Galactic plane from 20 to 200 TeV region are studied with early 160-day data collected by YangBaJing Hybrid Array(YBJ-HA),which is a hybrid array and consists of scintillation detectors and underground muon ***-distance equi-zenith angle and time-swapping methods are used to analyze the number ofγ-rays *** and conclusion Because of no significant observation onγ-ray emission,Helene's method is adopted to derive the 90%confidence level upper limits on the flux of diffuse galacticγ-*** the limit to the ratio of the flux ofγ-rays to CRs is obtained at the order of 10^(-4),which is the current best result at these energies.

关键词： Cosmic rays Diffuse y-rays YBJ-HA EAS