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The Journal of china Universities of Posts and Telecommunications 2009年第2期16卷 58-62,79页

作者： li chun-xi chen chang-jia school of electronics and information engineering,beijing {2.otong university,beijing 100044,china [a]school of electronics and {2. engineering beijing jiaotong {2. beijing 100044 china

Conventionally, P2. video is regarded as CBR traffic. However, our measurements have shown that the rate reset cannot be neglected in a practical IPTV system because each rate reset often leads to performance degradation. Thus, addressing the problem of inferring playback rate and rate reset in a P2. video system is significant. In this article, an algorithm termed piecewise linear envelope approximation （PLEA） is proposed, in which a follow-up time is introduced to smooth rate fluctuations in a small time scale and to adapt rate jumps in a large time scale automatically. With the PLEA algorithm, discontinuity introduced by blind segmentations adopted by current methods is avoided. Furthermore, unlike existing algorithms in which both segmentation and combinations are performed in multiple runs, only a single computation path is involved in the PLEA algorithm. This makes PLEA algorithm amenable to implementation of low complexity by either software or hardware. Both theoretical analysis and experiment based on measured data show that the PLEA outperforms existing algorithms based on segmentation.

关键词： P2. video playback rate rate reset convex hull linear program

Scheduling piece requests blindly and randomly for peer-to-peer live streaming

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The Journal of china Universities of Posts and Telecommunications 2010年第2期17卷 76-84页

作者： chen Yi-shuai chen {2.-jia ZHAO Yong-xiang li chun-xi school of Electrical and information {2. Beijing Jiaotong University Beijing 100044 China

The design of piece scheduling algorithm is fundamental in mesh-based peer-to-peer （P2.） live streaming systems. This article regards the piece propagation process in P2. live streaming system as a conflict process, where peers compete to get the piece as soon as possible to meet the tight timing requirement of the live system. In this vision, the authors reduce the piece scheduling problem as a conflict resolution problem, and propose a blind random scheduling method to resolve it. The algorithm can be described as： 1） pieces are scheduled independently; 2. conflicts are resolved by the random back off algorithm. The theoretical analysis and simulation results prove that the algorithm scales well with the network size, and can obtain near-optimal in-time delivery of pieces. The algorithm is also easy to implement in the real-world system.

关键词： peer-to-peer live streaming conflict resolution exponential back off piece scheduling

Polarization-induced photocurrent switching effect in heterojunction photodiodes

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Nano Research 2023年第4期16卷 5503-5510页

作者： Dingbo chen Yu-chang chen Guang Zeng Yu-chun li xiao-xi li Dong li Chao Shen Nan Chi Boon S.Ooi David Wei Zhang Hong-liang Lu State Key Laboratory of ASIC and System Shanghai Institute of Intelligent Electronics&SystemsSchool of MicroelectronicsFudan UniversityShanghai 200433China Key Laboratory for information Science of Electromagnetic Waves Department of Communication Science and EngineeringFudan UniversityShanghai 200433China Photonics Laboratory Division of ComputerElectricaland Mathematical Sciences and EngineeringKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia

The unipolar photocurrent in conventional photodiodes(PDs)based on photovoltaic effect limits the output modes and potential versatility of these devices in *** photodiodes with photocurrent switching are emerging as a promising solution for obtaining photoelectric devices with unique and attractive functions,such as optical logic ***,we design an all-solid-state chip-scale ultraviolet(UV)PD based on a hybrid GaN heterojunction with engineered bipolar polarized electric *** introducing the polarization-induced photocurrent switching effect,the photocurrent direction can be switched in response to the wavelength of incident light at 0 V *** particular,the photocurrent direction exhibits negative when the irradiation wavelength is less than 315 nm,but positive when the wavelength is longer than 315 *** device shows a responsivity of up to−6.7 mA/W at 300 nm and 5.3 mA/W at 340 nm,*** particular,three special logic gates in response to different dual UV light inputs are demonstrated via a single bipolar PD,which may be beneficial for future multifunctional UV photonic integrated devices and systems.

关键词： GaN heterostructure ultraviolet(UV)photodiodes bipolar photocurrent optical logic device

Incidence and prognosis of olfactory and gustatory dysfunctions related to SARS-CoV-2.Omicron strain infection in china:A national multicenter survey of 35,566 individuals

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第2期10卷 113-120页

作者： Meng-Fan liu Rui-xia Ma xian-Bao Cao Hua Zhang Shui-Hong Zhou Wei-Hong jiang Yan jiang Jing-Wu Sun Qin-Tai Yang Xue-Zhong li Ya-Nan Sun li Shi Min Wang xi-cheng Song Fu-Quan chen xiao-Shu Zhang Hong-Quan Wei Shao-Qing Yu Dong-Dong Zhu Luo Ba Zhi-Wei Cao Xu-Ping xiao xin Wei Zhi-Hong lin Feng-Hong chen chun-Guang Shan Guang-Ke Wang Jing Ye Shen-Hong Qu chang-Qing Zhao Zhen-lin Wang Hua-Bin li Feng liu xiao-Bo Cui Sheng-Nan Ye Zheng liu Yu Xu xiao Cai Wei Huang Ru-xin Zhang Yu-lin Zhao Guo-Dong Yu Guang-Gang Shi Mei-Ping Lu Yang Shen Yu-Tong Zhao jia-Hong Pei Shao-Bing xie Long-Gang Yu Ye-Hai liu Shao-Wei Gu Yu-cheng Yang Lei cheng jian-Feng liu Graduate school of beijing {2. of Chinese Medicine BeijingChina Department of Otorhinolaryngology Head and Neck Surgery China-Japan Friendship HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery The First People's Hospital of YinchuanYinchuanChina Department of Otorhinolaryngology The First People's Hospital of Yunnan ProvinceKunmingChina Department of Otorhinolaryngology The First Affiliated Hospital of Xinjiang Medical UniversityUrumqiChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Xiangya Hospital Central South UniversityChangshaChina Department of Otorhinolaryngology Head and Neck Surgery The Affiliated Hospital of Qingdao UniversityQingdaoChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of USTCHefeiChina Department of Otorhinolaryngology Head and Neck Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Qilu Hospital of Shandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery The Second Affiliated Hospital of Harbin Medical UniversityHarbinChina Department of Otolaryngology The Second Hospital of Shandong UniversityShandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery Peking University People's HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery Yantai Yuhuangding HospitalQingdao UniversityYantaiChina Department of Otorhinolaryngology Head and Neck Surgery Xijing HospitalThe Fourth Military Medical UniversityXi'anChina Gansu Provincial Center for Disease Control and Prevention LanzhouChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of China Medical UniversityShenyangChina Department of Otorhinolaryngology Head and Neck Surgery Tongji Hospit

Objective:This cross-sectional study aimed to determine the epidemiology of olfactory and gustatory dysfunctions related to COVID-19 in ***:This study was conducted by 45 tertiary Grade-A hospitals in *** and offline questionnaire data were obtained from patients infected with COVID-19 between December 2.,2.2.,and February 2.,*** collected information included basic demographics,medical history,smoking and drinking history,vaccination history,{2.es in olfactory and gustatory functions before and after infection,and other postinfection symptoms,as well as the duration and improvement status of olfactory and gustatory ***:Complete questionnaires were obtained from 35,566 *** overall incidence of olfactory and taste dysfunction was 67.75%.Being female or being a cigarette smoker increased the likelihood of developing olfactory and taste *** received four doses of the vaccine or having good oral health or being a alcohol drinker decreased the risk of such *** infection,the average olfactory and taste VAS scores were 8.41 and 8.51,respectively;after infection,they decreased to 3.69 and 4.2. and recovered to 5.83 and 6.55 by the time of the *** median duration of dysosmia and dysgeusia was 15 and 12.days,respectively,with 0.5%of patients having symptoms lasting for more than 2. *** overall self-reported improvement rate was 59.16%.Recovery was higher in males,never smokers,those who received two or three vaccine doses,and those that had never experienced dental health issues,or chronic accompanying ***:The incidence of dysosmia and dysgeusia following infection with the SARS-CoV-2.virus is high in *** and prognosis are influenced by several factors,including sex,SARS-CoV-2.vaccination,history of head-facial trauma,nasal and oral health status,smoking and drinking history,and the persistence of accompanying symptoms.

关键词： epidemiologic studies incidence olfactory disorders prognosis SARS-CoV-2 taste disorders

Evidence for particle acceleration approaching PeV energies in the W51 complex

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Science Bulletin 2024年第18期69卷 2833-2841页

作者： LHAASO Collaboration Zhen Cao F.Aharonian Axikegu Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi W.Bian A.V.Bukevich Q.Cao W.Y.Cao Zhe Cao J.chang J.F.chang A.M.chen E.S.chen H.X.chen liang chen lin chen Long chen M.J.chen M.L.chen Q.H.chen S.chen S.H.chen S.Z.chen T.L.chen Y.chen N.cheng Y.D.cheng M.Y.Cui S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu X.Q.Dong K.K.Duan J.H.Fan Y.Z.Fan J.Fang J.H.Fang K.Fang C.F.Feng H.Feng L.Feng S.H.Feng X.T.Feng Y.Feng Y.L.Feng S.Gabici B.Gao C.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge L.S.Geng G.Giacinti G.H.Gong Q.B.Gou M.H.Gu F.L.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han M.Hasan H.H.He H.N.He J.Y.He Y.He Y.K.Hor B.W.Hou C.Hou X.Hou H.B.Hu Q.Hu S.C.Hu D.H.Huang T.Q.Huang W.J.Huang X.T.Huang X.Y.Huang Y.Huang X.L.Ji H.Y.jia K.jia K.jiang X.W.jiang Z.J.jiang M.Jin M.M.Kang I.Karpikov D.Kuleshov K.Kurinov B.B.li C.M.li cheng li Cong li D.li F.li H.B.li H.C.li jian li Jie li K.li S.D.li W.L.li W.L.li X.R.li xin li Y.Z.li Zhe li Zhuo li E.W.liang Y.F.liang S.J.lin B.liu C.liu D.liu D.B.liu H.liu H.D.liu J.liu J.L.liu M.Y.liu R.Y.liu S.M.liu W.liu Y.liu Y.N.liu Q.Luo Y.Luo H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao Z.Min W.Mitthumsiri H.J.Mu Y.C.Nan A.Neronov L.J.Ou P.Pattarakijwanich Z.Y.Pei J.C.Qi M.Y.Qi B.Q.Qiao J.J.Qin A.Raza D.Ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shchegolev X.D.Sheng F.W.Shu H.C.Song Yu.V.Stenkin V.Stepanov Y.Su D.X.Sun Q.N.Sun X.N.Sun Z.B.Sun J.Takata P.H.T.Tam Q.W.Tang R.Tang Z.B.Tang W.W.Tian C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang J.C.Wang Kai Wang Kai Wang L.P.Wang L.Y.Wang P.H.Wang R.Wang W.Wang X.G.Wang X.Y.Wang Y.Wang Y.D.Wang Y.J.Wang Z.H.Wang Z.X.Wang Zhen Wang Zheng Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu Q.W.Wu S.Wu X.F.Wu Y.S.Wu S.Q.xi J.xia G.M.xiang D.X.xiao G.xiao Y.L.xin Y.xing D.R.xiong Z.xiong D.L.Xu R.F.Xu R.X.Xu W.L.Xu L.Xue D.H.Yan J.Z.Yan T.Yan C.W.Yang C.Y.Yang F.Yang F.F.Yang L.L.Yang M.J.Yang R.Z.Yang W.X.Yang Y.H.Yao Z.G.Yao L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.Yue H.D.Zeng T.X.Zeng W.Zeng M.Zha B.B.Zhang F.Zhang H.Zhang 不详 Key Laboratory of Particle Astrophysics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduChina Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear Physics P.O.Box 103980Heidelberg 69029Germany school of Physical Science and Technology&school of {2. Science and Technology Southwest Jiaotong UniversityChengdu 610031China school of Astronomy and Space Science Nanjing UniversityNanjing 210023China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Tsung-Dao Lee Institute&school of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute for Nuclear Research of Russian Academy of Sciences Moscow 117312Russia Hebei Normal university Shijiazhuang 050024China university of Science and Technology of china Hefei 230026China State Key Laboratory of Particle Detection and electronics China Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China school of Physics and Astronomy Yunnan UniversityKunming 650091China Key Laboratory of Cosmic Rays(Tibet university) Ministry of EducationLhasa 850000China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China school of Physics and Astronomy(Zhuhai)&school of Physics(Guangzhou)&Sino-French Institute of Nuclear {2. and Technology(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray emission from the W51 complex is widely acknowledged to be attributed to the interaction between the cosmic rays(CRs)accelerated by the shock of supernova remnant(SNR)W51C and the dense molecular clouds in the adjacent star-forming region,***,the maximum acceleration capability of W51C for CRs remains *** on observations conducted with the Large High Altitude Air Shower Observatory(LHAASO),we report a significant detection ofγrays emanating from the W51 complex,with energies from 2.to 2.0 *** LHAASO measurements,for the first time,extend theγ-ray emission from the W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of *** combining the"π^(0)-decay bump"featured data from Fermi-LAT,the broadbandγ-ray spectrum of the W51 region can be well-characterized by a simple pp-collision *** observed spectral bending feature suggests an exponential cutoff at~400 TeV or a power-law break at~2.0 TeV in the CR proton spectrum,most likely providing the first evidence of SNRs serving as CR accelerators approaching the PeV ***,two young star clusters within W51B could also be theoretically viable to produce the most energeticγrays observed by *** findings strongly support the presence of extreme CR accelerators within the W51 complex and provide new insights into the origin of Galactic CRs.

关键词： UHE c-ray Cosmic rays SNR W51C Star clusters

Prospective study of light dark matter search with a newly proposed DarkSHINE experiment

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Science china(Physics,Mechanics & Astronomy) 2023年第1期66卷 124-138页

作者： Jing chen Ji-Yuan chen Jun-Feng chen xiang chen chang-Bo Fu Jun Guo Le He Zheng-Ting He Kim Siang Khaw jia-lin li liang li Shu li Meng Lv Dan-Ning liu Han-Qing liu Kun liu Qi-Bin liu Yang liu Ze-jia Lu Cen Mo Si-Yuan Song xiao-Long Wang Yu-Feng Wang Zhen Wang Zi-Rui Wang Wei-Hao Wu Dao xiang Hai-Jun Yang Jun-Hua Zhang Yu-Lei Zhang Zhi-Yu Zhao Xu-liang Zhu chun-xiang Zhu Yi-Fan Zhu Tsung-DaoLee Institute Shanghai Jiao Tong UniversityShanghai 201210China Institute of Nuclear and Particle Physics School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Particle Astrophysics and Cosmology(MOE) Shanghai Key Laboratory for Particle Physics and Cosmology(SKLPPC)Shanghai 200240China Center for High Energy Physics Peking UniversityBeijing 10087lChina school of Mechanical and Electronic engineering Suzhou UniversitySuzhou 234000China school of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China school of electronics Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China R&D Center Shanghai Instituteof CeramicsChinese Academyof SciencesShanghai 20189China Key Laboratory of Nuclear Physics and lon-beam Application(MOE) Fudan UniversityShanghai 200443China Institute of Modern Physics Fudan UniversityShanghai 200443China IKey Laboratory for Laser Plasmas(MOE) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Zhangjiang Institute for Advanced Study Shanghai JiaoTong UniversityShanghai 200240.China College of literature Scienceand the ArtsUniversity of MichiganAnn Arbor MI 48109-1040USA Deparment of Physics Swiss Federal Institnute of Technology ZurichZurich 8093Swizerland

Dark photons have been well motivated as strong candidates for dark force carriers and light dark matter in the sub-GeV mass *** with collider experiments,fixed-target experiments provide a complementary approach to searching for dark photons,particularly in the lower mass *** have studied the physics potential of the electron-on-target experiment based on the Shanghai SHINE facility,which provides 10 MHz single electron beam at 8 GeV *** analysis focuses on dark photons being produced via electron and nucleon interaction and then decays to dark matter candidates,which escape detection as missing momentum in the *** experiment takes advantage of using missing momentum to enhance signal versus background separation *** this study,signal samples as a function of dark photon mass and an inclusive background sample with 2.5 billion events are simulated with *** better background estimates,major rare background processes have also been *** paper presents the experiment and detector design,signal and background simulations,analysis strategy,and the prospective study of the experiment *** 9×10^(14) electron-on-target events(about three years running),this experiment is expected to rule out most of the sensitive regions predicted by popular dark photon models.

关键词： dark matter dark photon electron-on-target experiment

Optimization of performance of the KM2. full array using the Crab Nebula

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Chinese Physics C 2024年第6期48卷 169-178页

作者：曹臻 F.Aharonian 安琪阿西克古白云翔包逸炜 D.Bastieri 毕效军毕玉江蔡金庭曹晴曹文羽曹喆常进常劲帆陈尚明陈恩生陈亮陈林陈龙陈明君陈玛丽陈起辉陈素弘陈天禄陈阳程宁程耀东崔明阳崔树旺崔晓红崔昱东戴本忠代洪亮戴子高单增罗布 D.della Volpe 董绪强段凯凯樊军辉范一中方军方堃冯存峰封莉冯少辉丰晓婷冯有亮 S.Gabici 高博高川东高林青高启高卫高伟康葛茂茂耿利斯 G.Giacinti 龚光华苟全补顾旻皓郭福来郭晓磊郭义庆郭莹莹韩毅昂何会海贺昊宁何佳银何新波何钰 M.Heller 贺远强侯博文侯超侯贤胡红波胡铨胡世聪黄代绘黄天奇黄文俊黄性涛黄晓渊黄勇黄志成季筱璐贾焕玉贾康江琨姜晓巍姜泽军金敏康明铭柯通 D.Kuleshov.K.Kurinov 李兵兵李澄李骢李丹李飞李海波李会财李华阳李军李剑李捷李凯李文龙李文莲李秀荣李昕李一卓李哲黎卓梁恩维梁云峰林苏杰刘冰刘成刘栋刘虎刘海东刘佳刘江来刘金艳刘茂元柳若愚刘四明刘伟刘怡刘以农鲁睿罗晴吕洪魁马伯强马玲玲马欣华毛基荣闵振 W.Mitthumsiri 穆慧君南云程 A.Neronov 区子维庞彬宇 P.Pattarakijwanich 裴致远齐孟尧祁业情乔冰强秦家军 D.Ruffolo A.Sáiz D.Semikoz 邵澄宇邵琅 O.Shchegolev 盛祥东舒富文宋慧超 Yu.V.Stenkin V.Stepanov 苏扬孙秦宁孙晓娜孙志斌谭柏轩唐庆文唐泽波田文武王超王昌贝王广威王洪光王惠惠王建成汪凯王利苹王玲玉王培汉王冉王为王祥高王祥玉王阳王玉东王岩谨王忠海王仲翔王振王铮韦大明魏俊杰魏永健文韬吴超勇吴含荣武莎吴雪峰吴雨生席邵强夏捷夏君集项光漫肖迪泫肖刚辛广广辛玉良邢祎熊峥徐东莲徐仁峰徐仁新徐伟立薛良闫大海颜景志颜田杨朝文杨帆杨冯帆杨何文杨佳盈杨莉莉杨明洁杨睿智杨深邦姚玉华姚志国叶一锰尹丽巧尹娜游晓浩游智勇于艳红袁强岳华曾厚敦曾婷轩曾玮查敏张彬彬张丰张海明张恒英张建立张丽霞张力张鹏飞张佩佩张瑞张少博张少如张寿山张潇张笑鹏张云峰张毅张勇赵兵赵静赵雷赵立志赵世平郑福周斌周浩周佳能周猛周平周荣周勋秀祝成光祝凤荣朱辉朱科军左雄 LHAASO Collaboration Key Laboratory of Particle Astrophyics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of Chinese Academy of Sciences Beijing 100049China Tianfu Cosmic Ray Research Center Chengdu 610000China Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear Physics P.O.Box 10398069029 HeidelbergGermany State Key Laboratory of Particle Detection and electronics China university of Science and Technology of china Hefei 230026China school of Physical Science and Technology&school of {2. Science and Technology Southwest Jiaotong UniversityChengdu 610031China school of Astronomy and Space Science Nanjing UniversityNanjing 210023China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Hebei Normal university Shijiazhuang 050024China Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Tsung-Dao Lee Institute&school of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Key Laboratory of Cosmic Rays(Tibet university) Ministry of EducationLhasa 850000TibetChina National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China school of Physics and Astronomy(Zhuhai)&school of Physics(Guangzhou)&Sino-French Institute of Nuclear {2. and Technology(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275China school of Physics and Astronomy Yunnan UniversityKunming 650091China Département de Physique Nucléaire et Corpusculaire Facultéde SciencesUniversitéde Genève24 Quai Ernest Ansermet1211 GenevaSwitzerland Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China APC Universit'e Paris Cit'eCNRS/IN2P3CEA/IRFUObservat

The full array of the Large High Altitude Air Shower Observatory(LHAASO)has been in operation since July *** its kilometer-square array(KM2.),we optimized the selection criteria for very high and ultrahigh energyγ-rays using data collected from August 2.2. to August 2.2.,resulting in an improvement in significance of the detection in the Crab Nebula of approximately 15%,compared with that of previous *** the implementation of these new selection criteria,the angular resolution was also significantly improved by approximately 10%at tens of *** aspects of the full KM2. array performance,such as the pointing error,were also ca{2.brated using the Crab *** resulting energy spectrum of the Crab Nebula in the energy range of 10-1000 TeV are well fitted by a log-parabola model,which is consistent with the previous results from LHAASO and other experiments.

关键词： γ-ray Crab Nebula significance

Chemical vapor deposition synthesis of V-doped MoS_(2.

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Rare Metals 2023年第12期42卷 3985-3992页

作者： Yang Yang Qing-Rong liang chun-li Zhu Guo-Zhong Zheng jian Zhang Shou-Jun Zheng Yung-chang lin De-Zhi Zheng jia-Dong Zhou school of Physics Beijing Institute of TechnologyBeijing 100081China school of information and {2. and Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China school of Physics Shaanxi Normal UniversityXi'an 710119 China The Institute of Scientific and Industrial Research Osaka UniversityOsaka 567-0047Japan Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China

Van der Waals coupling with different stacking configurations can significantly affect the optical and electronic properties of ultrathin two-dimensional(2.)materials,which is an effective way to tune device ***,we report a salt-assisted chemical vapor deposition method for the synthesis of bilayer V-doped MoS_(2. with 2. and 3R phases,which are demonstrated by the second harmonic generation and scanning transmission electron ***,the mobility of the 3R phase V-doped MoS_(2. is 6.2.higher than that of the 2. *** first-principles calculations,we further reveal that this particular behavior is attributed to the stronger interlayer coupling of 3R compared to the 2. stacking *** research can be further generalized to other transition metal chalcogenides and will contribute to the development of electronic devices based on 2. materials in the future.

关键词： Chemical vapor deposition Synthesis Firstprinciples calculations 2. 3R

Extension Protocol for the Investigation on Nutrition Status and Clinical Outcome of Patients with Common Cancers in china(INSCOC)Study:2.2. update

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Journal of Nutritional Oncology 2022年第2期7卷 64-74页

作者： Hong xia Xu chun Hua Song {2.ang Yu Yin chang Wang Zhen Ming Fu Zeng Qing Guo Yuan {2.n Ying Ying Shi Wen Hu Yi Ba Su Yi {2. Zeng Ning {2. Kun Hua Wang Jing Wu Ying He jia Jun Yang Cong Hua xie Fu xiang Zhou xin xia Song Gong Yan {12. Wen Jun Ma Su xia Luo Zi Hua {12. Zhi Kang {12. Ming Hua Cong Hu Ma chun {2.ng Zhou Wei Wang Qi Luo Yong Mei Shi Yu Mei Qi Hai Ping jiang Wen xian Guan Jun Qiang {12. xiang Hua Wu jia xin {12. Yu Fang Lan Zhou Yong Dong Feng Rong Shao Tan Tao {2. Jun Wen Ou Qing Chuan Zhao jian xiong Wu Min Weng Qing Hua Yao Ya Yin Yu Quan Jun Lyu Hong Qiu Ming {2.u Wei {2. Han Ping Shi The Investigation on Nutrition Status and C{2.nical Outcome of Common Cancers(INSCOC)Group Department of Nutrition Daping HospitalArmy Medical University(Third Military Medical University)Chongqing 400042China Department of Epidemiology College of Public HealthZhengzhou UniversityZhengzhou 450001HenanChina Cancer Center of the First Hospital of Jilin university Changchun 130021Jilin China Cancer Center Renmin Hospital of Wuhan UniversityWuhan 430060HubeiChina Department of Medical Oncology Fujian Cancer HospitalFujian Medical University Cancer HospitalFuzhou 350014FujianChina Department of Gastrointestinal Surgery Affiliated Tumor Hospital of Guangxi Medical UniversityNanning 530021GuangxiChina Department of Surgery The First Affiliated Hospital of SunYat-Sen UniversityGuangzhou 510080GuangdongChina Department of Clinical Nutrition West China Hospital of Sichuan UniversityChengdu 610041SichuanChina Department of Gastrointestinal Oncology Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjin Key Laboratory of Cancer Prevention and TherapyTianjin 300060China Department of Nutrition and Metabolism of Oncology The First Affiliated Hospital of University of Science and Technology of ChinaAnhui Provincial Cancer HospitalHefei 230031AnhuiChina Department of Clinical Nutrition The First Hospital of Hebei Medical UniversityShijiazhuang 050031HebeiChina Department of Gastrointestinal Surgery Institute of GastroenterologyThe First Affiliated Hospital of Kunming Medical UniversityKunming 650032YunnanChina Department of Clinical Nutrition The First Affiliated Hospital of Zhejiang Chinese Medical UniversityZhejiang Provincial Hospital of Traditional Chinese MedicineHangzhou 310006ZhejiangChina Department of Clinical Nutrition Chongqing General HospitalChongqing 400014China Department of Colorectal and Anal Surgery Huizhou Municipal Central HospitalHuizhou 516001GuangdongChina Department of Radiation and Medical Oncology Zhongnan Hospital of Wuhan UniversityWuhan 430071HubeiChina Department of Oncology Xingtai Peo

Background Malnutrition is common in patients with cancer,and this adversely affects the survival and quality of life of *** Society for Nutritional Oncology issued a multi-center,large-scale,long-term follow-up prospective study,the Investigation on Nutrition Status and Clinical Outcome of Patients with Common Cancers in china(INSCOC study)since *** is an extension to the previous 2.13-2.2. study *** study still sought to:①address the prognostic impact of nutritional factors and quality of life on cancer patient survival;②describe the overall and cancer-specific incidence and/or distribution of malnutrition and different measurements of patient quality of *** and study design This is an observational,multi-centered,hospital-based prospective cohort *** collection will be performed at baseline(within 48 hours after patient admission),during the hospital stay and 30 days after hospital ***-up will be conducted for 1-2. years after *** primary outcome will be the all-cause mortality/overall survival,and secondary outcomes will be the length of hospital stay and costs of *** factors will include demographic characteristics,tumor characteristics,information about chronic diseases,hematological measurements(e.g.,red blood cell count,total lymphocyte counts,hemoglobin,albumin,prealbumin,creatinine,C-reactive protein,IL-6),anthropometric measurements(e.g.,height,weight,arm circumference,arm muscle circumference,triceps skinfold thickness,and waist circumference),body composition parameters,PG-SGA scores,quality of life(as indicated by the QLQ-C30 questionnaire),muscle mass(as indicated by the calf circumference),muscle strength(as indicated by the handgrip strength),muscle function(as indicated by the six-meter walking speed test)and physical status assessments(as indicated by the Karnofsky Performance Status scores).This clinical study protocol was approved by local Ethics Committees of

关键词： Cancer Malnutrition Nutritional status Nutritional assessment Survival Patient-Generated Subjective Global Assessment

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基于小波分析的除尘机清灰系统故障检测方法

太原科技大学学报 2023年第5期44卷 440-446页

作者：李嘉敏董增寿常春波高文华陈炜太原科技大学电子与信息学院太原030024 山西中谷科技股份有限公司太原030000

脉冲清灰装置是袋式除尘器的重要组成部分,如果脉冲清灰装置存在故障,将严重影响除尘器的除尘效率,进而影响工业生产。为了保障除尘器的除尘效率,通过对脉冲清灰装置进行系统的研究,详细的介绍了一种基于小波分析提取除尘机清灰系统故... 详细信息

脉冲清灰装置是袋式除尘器的重要组成部分,如果脉冲清灰装置存在故障,将严重影响除尘器的除尘效率,进而影响工业生产。为了保障除尘器的除尘效率,通过对脉冲清灰装置进行系统的研究,详细的介绍了一种基于小波分析提取除尘机清灰系统故障特征的方法,该方法将采集的气包压力信号进行小波变换,并提取得到清灰系统不同故障的相关特征量,通过与无故障的特征量进行对比,可实现对脉冲清灰系统中脉冲电磁阀不喷吹故障和漏气故障的精确诊断和定位。

关键词：故障诊断模极大值法小波分析奇异点检测