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Search for Exotic Higgs Boson Decays H→AA→4γ with Events Containing Two Merged Diphotons in Proton-Proton Collisions at s=13 TeV

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Physical Review Letters 2023年第10期131卷 101801-101801页

作者： A. Tumasyan W. Adam J. W. Andrejkovic T. Bergauer S. Chatterjee K. Damanakis M. Dragicevic A. Escalante Del Valle P. S. Hussain M. Jeitler N. Krammer L. Lechner D. Liko I. Mikulec P. Paulitsch F. M. Pitters J. Schieck R. Schöfbeck D. Schwarz S. Templ W. Waltenberger C.-E. Wulz M. R. Darwish T. Janssen T. Kello H. Rejeb Sfar P. Van Mechelen E. S. Bols J. D’Hondt A. De Moor M. Delcourt H. El Faham S. Lowette S. Moortgat A. Morton D. Müller A. R. Sahasransu S. Tavernier W. Van Doninck D. Vannerom B. Clerbaux G. De Lentdecker L. Favart D. Hohov J. Jaramillo K. Lee M. Mahdavikhorrami I. Makarenko A. Malara S. Paredes L. Pétré N. Postiau E. Starling L. Thomas M. Vanden Bemden C. Vander Velde P. Vanlaer D. Dobur J. Knolle L. Lambrecht G. Mestdach M. Niedziela C. Rendón C. Roskas A. Samalan K. Skovpen M. Tytgat N. Van Den Bossche B. Vermassen L. Wezenbeek A. Benecke G. Bruno F. Bury C. Caputo P. David C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre K. Mondal J. Prisciandaro A. Taliercio T. T. Tran P. Vischia S. Wertz G. A. Alves E. Coelho C. Hensel A. Moraes P. Rebello Teles W. L. Aldá Júnior M. Alves Gallo Pereira M. Barroso Ferreira Filho H. Brandao Malbouisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao V. Dos Santos Sousa S. Fonseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel F. Torres Da Silva De Araujo A. Vilela Pereira C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. Shopova G. Sultanov A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov A. Petrov E. Shumka T. Cheng T. Javaid M. Mittal L. Yuan M. Ahmad G. Bauer Z. Hu S. Lezki K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu V. Milosevic F. Monti R. Sharma J. Tao J. Thomas-Wilsker J. Wang H. Zhang J. Zhao A. Agapitos Y. An Y. Ban C. Chen A. Levin C. L Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics Univer

We present the first direct search for exotic Higgs boson decays H→AA, A→γγ in events with two photonlike objects. The hypothetical particle A is a low-mass spin-0 particle decaying promptly to a merged diphoton reconstructed as a single photonlike object. We analyze the data collected by the CMS experiment at s=13 TeV corresponding to an integrated luminosity of 136 fb−1. No excess above the estimated background is found. We set upper limits on the branching fraction B(H→AA→4γ) of (0.9–3.3)×10−3 at 95% confidence level for masses of A in the range 0.1–1.2 GeV.

关键词： Higgs bosons Hadron colliders

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Observation of τ Lepton Pair Production in Ultraperipheral Pb-Pb Collisions at sNN=5.02 TeV

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Physical Review Letters 2023年第15期131卷 151803-151803页

作者： A. Tumasyan W. Adam J. W. Andrejkovic T. Bergauer S. Chatterjee K. Damanakis M. Dragicevic A. Escalante Del Valle P. S. Hussain M. Jeitler N. Krammer L. Lechner D. Liko I. Mikulec P. Paulitsch F. M. Pitters J. Schieck R. Schöfbeck D. Schwarz S. Templ W. Waltenberger C.-E. Wulz M. R. Darwish T. Janssen T. Kello H. Rejeb Sfar P. Van Mechelen E. S. Bols J. D’Hondt A. De Moor M. Delcourt H. El Faham S. Lowette S. Moortgat A. Morton D. Müller A. R. Sahasransu S. Tavernier W. Van Doninck D. Vannerom B. Clerbaux G. De Lentdecker L. Favart D. Hohov J. Jaramillo K. Lee M. Mahdavikhorrami I. Makarenko A. Malara S. Paredes L. Pétré N. Postiau E. Starling L. Thomas M. Vanden Bemden C. Vander Velde P. Vanlaer D. Dobur J. Knolle L. Lambrecht G. Mestdach M. Niedziela C. Rendón C. Roskas A. Samalan K. Skovpen M. Tytgat N. Van Den Bossche B. Vermassen L. Wezenbeek A. Benecke G. Bruno F. Bury C. Caputo P. David C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre K. Mondal J. Prisciandaro A. Taliercio T. T. Tran P. Vischia S. Wertz G. A. Alves E. Coelho C. Hensel A. Moraes P. Rebello Teles W. L. Aldá Júnior M. Alves Gallo Pereira M. Barroso Ferreira Filho H. Brandao Malbouisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao V. Dos Santos Sousa S. Fonseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel F. Torres Da Silva De Araujo A. Vilela Pereira C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. Shopova G. Sultanov A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov A. Petrov E. Shumka T. Cheng T. Javaid M. Mittal L. Yuan M. Ahmad G. Bauer Z. Hu S. Lezki K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu V. Milosevic F. Monti R. Sharma J. Tao J. Thomas-Wilsker J. Wang H. Zhang J. Zhao A. Agapitos Y. An Y. Ban C. Chen A. Levin C. L Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics Universi

We present an observation of photon-photon production of τ lepton pairs in ultraperipheral lead-lead collisions. The measurement is based on a data sample with an integrated luminosity of 404 μb−1 collected by the CMS experiment at a center-of-mass energy per nucleon pair of sNN=5.02 TeV. The γγ→τ+τ− process is observed for τ+τ− events with a muon and three charged hadrons in the final state. The measured fiducial cross section is σ(γγ→τ+τ−)=4.8±0.6(stat)±0.5(syst) μb, where the second (third) term corresponds to the statistical (systematic) uncertainty in σ(γγ→τ+τ−) in agreement with leading-order QED predictions. Using σ(γγ→τ+τ−), we estimate a model-dependent value of the anomalous magnetic moment of the τ lepton of aτ=0.001−0.089+0.055.

关键词： Relativistic heavy-ion collisions Tau leptons Magnetic moment Hadron colliders

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FPGA Optimal Implementation of PRINCE against Power Analysis Attacks

FPGA Optimal Implementation of PRINCE against Power Analysis...

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ISCC 2017-the 5th International Conference on Information Science and Cloud Computing

作者： Yi Zou Lang Li College of Computer Science and Technology Hengyang Normal University Hunan Provincial Key Laboratory of Intelligent Information Processing and Application College of Computer Science and Technology Hengyang Normal University

The algorithm PRINCE proposed in ASIACRYPT 2012 is a lightweight cipher, currently suitable for the implementation on RFID Smart Card of the Io T. It's studied to achieve the optimal implementation of PRINCE encryption algorithm, and to add a fixed random mask to enhance the anti power attacking ability of PRINCE. In this paper, we constructed the same operations into a module called Prince Round, and used counter to control the Prince Round module, while the same round operation runs repeatedly. As a result, it can save registers and effectively reduce the amount of computation. Furthermore, we used a special method by adding the random mask to S-box. The experimental results show that the optimized PRINCE occupies area 9.8% fewer than original PRINCE on FPGA and the encryption with a fixed random mask can run correctly. Last but not least, our research is the first one about the implementation of PRINCE algorithm on FPGA, and can serve as a reference for further application of IOT encryption.

关键词： Matrix FPGA Optimal Implementation of PRINCE against Power Analysis Attacks

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Observation of the Rare Decay of the η Meson to Four Muons

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Physical Review Letters 2023年第9期131卷 091903-091903页

作者： A. Hayrapetyan A. Tumasyan W. Adam J. W. Andrejkovic T. Bergauer S. Chatterjee K. Damanakis M. Dragicevic A. Escalante Del Valle P. S. Hussain M. Jeitler N. Krammer D. Liko I. Mikulec J. Schieck R. Schöfbeck D. Schwarz M. Sonawane S. Templ W. Waltenberger C.-E. Wulz M. R. Darwish T. Janssen P. Van Mechelen E. S. Bols J. D’Hondt S. Dansana A. De Moor M. Delcourt H. El Faham S. Lowette I. Makarenko A. Morton D. Müller A. R. Sahasransu S. Tavernier M. Tytgat S. Van Putte D. Vannerom B. Clerbaux G. De Lentdecker L. Favart D. Hohov J. Jaramillo A. Khalilzadeh K. Lee M. Mahdavikhorrami A. Malara S. Paredes L. Pétré N. Postiau L. Thomas M. Vanden Bemden C. Vander Velde P. Vanlaer M. De Coen D. Dobur J. Knolle L. Lambrecht G. Mestdach C. Rendón A. Samalan K. Skovpen N. Van Den Bossche L. Wezenbeek A. Benecke G. Bruno C. Caputo C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre J. Lidrych P. Mastrapasqua K. Mondal T. T. Tran S. Wertz G. A. Alves E. Coelho C. Hensel T. Menezes De Oliveira A. Moraes P. Rebello Teles M. Soeiro W. L. Aldá Júnior M. Alves Gallo Pereira M. Barroso Ferreira Filho H. Brandao Malbouisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel A. Vilela Pereira C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes B. Orzari Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Shopova G. Sultanov A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov A. Petrov E. Shumka S. Keshri S. Thakur T. Cheng Q. Guo T. Javaid M. Mittal L. Yuan G. Bauer Z. Hu K. Yi G. M. Chen H. S. Chen M. Chen F. Iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu F. Monti R. Sharma J. N. Song J. Tao J. Wang H. Zhang A. Agapitos Y. Ban A. Levin C. Li Q. Li X. Lyu Y. Mao S. J. Qian X. Sun D. Wang H. Yang C. Zhou Z. You N. Lu D. Leggat H. Okawa Y. Zhang Z. Lin C. Lu M. Xiao C. Avila D. A Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussels Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University Shanghai China Rice University Houston Texas USA Zhejiang University Hangzhou Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Phy

A search for the rare η→μ+μ−μ+μ− double-Dalitz decay is performed using a sample of proton-proton collisions, collected by the CMS experiment at the CERN LHC with high-rate muon triggers during 2017 and 2018 and corresponding to an integrated luminosity of 101 fb−1. A signal having a statistical significance well in excess of 5 standard deviations is observed. Using the η→μ+μ− decay as normalization, the branching fraction B(η→μ+μ−μ+μ−)=[5.0±0.8(stat)±0.7(syst)±0.7(B2μ)]×10−9 is measured, where the last term is the uncertainty in the normalization channel branching fraction. This work achieves an improved precision of over 5 orders of magnitude compared to previous results, leading to the first measurement of this branching fraction, which is found to agree with theoretical predictions.

关键词： Mesons Hadron colliders Particle decays

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Design and Implementation of Hardware-Based Low Latency TCP Offload Engine for 10 Gbps Ethernet 13

Design and Implementation of Hardware-Based Low Latency TCP ...

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2016 13th IEEE International Conference on Solid-State and Integrated Circuit technology (ICSICT)

作者： Li Ding Ping Kang Wenbo Yin Zhi-Hua Feng State Key Laboratory of ASIC & System Fudan University Beijing Institute of Computer Technology and Application

ISBN: (纸本)9781467397209

With the data growth related to the increase of devices with network access, the high speed Ethernet is widely used in various fields from big data center to high frequency transaction(HFT). However, the conventional software-based protocol stack consumes large amount of CPU time at full transmission rate, and leads to low performance such as high latency and low throughput. This paper presents a hardware based TCP offload engine(TOE) operating at full 10 Gbps throughput full-duplex with the low latency. Features supporting high speed network such as congestion avoidance and timestamp are implemented. The proposed TOE is verified by interacting with the software protocol stack. The performance measurement shows our TOE can provide transmission rate up to 10 Gbps as both transmitter and receiver. The input-to-output latency for 100 bytes payload and 64 bytes header with timestamp is about 90 nanoseconds compared with the 140 nanoseconds implemented by Dini Group.

关键词： Design and Implementation of Hardware-Based Low Latency TCP Offload Engine for 10 Gbps Ethernet TOE Engine

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Fast FPGA Compilation Based on Relocatable P&R Constraints 13

Fast FPGA Compilation Based on Relocatable P&R Constraints

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2016 13th IEEE International Conference on Solid-State and Integrated Circuit technology (ICSICT)

作者： Chong Wang Xue-Gong Zhou Ling-Li Wang Zhi-Hua Feng State Key Laboratory of ASIC & System Fudan University Beijing Institute of Computer Technology and Application

ISBN: (纸本)9781467397209

In modern commercial FPGA EDA tools, modular design is very common to reduce the development time. This paper introduces a new method of modular design and module connection based on relocatable P&R constraints, where users can build their own module library and invoke these modules easily. A routed file from the module library can be directly used as a module which can be placed in the user-specified position in a design without recompiling the module. Hence it can save considerable compilation time and ensure the timing performance of the module. Additionally, compared with previous approach based on partial bitstreams[1], no extra logic resource is needed to make the interface connections.

关键词： Fast FPGA Compilation Based on Relocatable P&R Constraints

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Corrigendum to “Terrestrial and groundwater storage characteristics and their quantification in the Chitral (Pakistan) and Kabul (Afghanistan) river basins using GRACE/GRACE-FO satellite data”

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Groundwater for Sustainable Development 2023年 23卷

作者： Aqil Tariq Shoaib Ali Iqra Basit Ahsan Jamil Nizom Farmonov Behnam Khorrami Muhammad Mohsin Khan Samira Sadri Muhammad Yousuf Jat Baloch Fakhrul Islam Muhammad Bilawal Junaid Wesam Atef Hatamleh Ubaid-ur-Rehman Janjua Department of Wildlife Fisheries and Aquaculture College of Forest Resources Mississippi State University 775 Stone Boulevard 39762-9690 MS USA State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University Wuhan 430079 China School of Water Conservancy & Civil Engineering Northeast Agricultural University Harbin Heilongjiang 150030 China Department of Irrigation and Drainage Faculty of Agricultural Engineering and Technology University of Agriculture Faisalabad Faisalabad 38000 Pakistan Remote Sensing GIS and Climate Research Lab (National Center of GIS and Space Application) Centre for Remote Sensing University of the Punjab Lahore 54590 Pakistan Department of Plant and Environmental Sciences New Mexico State University 3170S Espina Street Las Cruces NM 88003 USA Department of Geoinformatics Physical and Environmental Geography University of Szeged Egyetem utca 2 Szeged 6722 Hungary Department of GIS The Graduate School of Applied and Natural Sciences Dokuz Eylul University 35220 Izmir Turkey Department of Agricultural Engineering Muhammad Nawaz Shareef University of Agriculture Multan Multan Pakistan Department of Water Resources Engineering Shahid Chamran University of Ahvaz Ahvaz *** Iran College of New Energy and Environment Jilin University Changchun 130021 China Department of Geology Khushal Khan Khattak University Karak Pakistan Department of Plant Production College of Food and Agriculture King Saud University Riyadh Saudi Arabia Department of Computer Science College of Computer and Information Sciences King Saud University P.O. Box 51178 Riyadh 11543 Saudi Arabia Department of Geography and Geospatial Sciences Geospatial Sciences Center of Excellence South Dakota State University Brookings South Dakota USA

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Passenger Flow Analysis of Direct Metro Lines

Passenger Flow Analysis of Direct Metro Lines

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2017 2nd International Conference on Computational Modeling, Simulation and Applied Mathematics（CMSAM 2017)

作者： Xue-wen TAN Fan YANG Xiao-zhou CHEN School of Mathematics and Computer science Yunnan Minzu University Key Laboratory of IOT Application Technology of Universities in Yunnan Province Yunnan Minzu University

The metro or subway has become a preferred plan for going out, hence the pressure of urban traffic has been put on metro or subway. Based on the original metro network, we designed some through train to optimize the operation efficiency of the whole metro network and the social benefits brought by it. Meanwhile we shorten the travel time of long-distance passengers;on the other hand, we decrease the intermediate site traffic pressure. We separately pick up the possible metro line of the whole metro network as analysis object, through choosing a fixed range at the two ends of the line as the data object model analysis. Using Poisson distribution and multiple linear regression analysis to calculate the direct passenger flow rate between the two stations, then we get the direct passenger flow rate in the selected range of traffic between two stations, and select the two stations that has the maximum of those rate as the result of terminals. Considering the passengers' waking-time, waiting-time and journey time, we can get the passengers' travel time by algorithm analysis. And using the passengers' travel time as test model reference quantity of model test, and reducing the travel time can directly improve the social benefit and economic benefit.

关键词： Travel time distribution Multiple linear regression Passengers flow

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Investigation of intergranular bright points from the New Vacuum Solar Telescope

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Research in Astronomy and Astrophysics 2016年第5期16卷 69-80页

作者： Kai-Fan Ji Jian-Ping Xiong Yong-Yuan Xiang Song Feng Hui Deng Feng Wang Yun-Fei Yang Faculty of Information Engineering and Automation/Yunnan Key Laboratory of Computer Technology Application Kunming University of Science and Technology Key Laboratory of Solar Activity National Astronomical Observatories Chinese Academy of Sciences Key Laboratory of Modern Astronomy and Astrophysics Nanjing University Ministry of Education Yunnan Observatories Chinese Academy of Sciences

Six high-resolution TiO-band image sequences from the New Vacuum Solar Telescope （NVST） are used to investigate the properties of intergranular bright points （igBPs）. We detect the igBPs using a Laplacian and morphological dilation algorithm （LMD） and automatically track them using a three- dimensional segmentation algorithm, and then investigate the morphologic, photometric and dynamic prop- erties of igBPs in terms of equivalent diameter, intensity contrast, lifetime, horizontal velocity, diffusion index, motion range and motion type. The statistical results confirm previous studies based on G-band or TiO-band igBPs from other telescopes. These results illustrate that TiO data from the NVST are stable and reliable, and are suitable for studying igBPs. In addition, our method is feasible for detecting and track- ing igBPs with TiO data from the NVST. With the aid of vector magnetograms obtained from the Solar Dynamics Observatory/Helioseismic and Magnetic Imager, the properties of igBPs are found to be strongly influenced by their embedded magnetic environments. The areal coverage, size and intensity contrast values of igBPs are generally larger in regions with higher magnetic flux. However, the dynamics of igBPs, includ- ing the horizontal velocity, diffusion index, ratio of motion range and index of motion type are generally larger in the regions with lower magnetic flux. This suggests that the absence of strong magnetic fields in the medium makes it possible for the igBPs to look smaller and weaker, diffuse faster, and move faster and further along a straighter path.

关键词： techniques： image processing -- Sun： photosphere -- methods： data analysis -- methods：statistical

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Research on Power Attack Comprehensive Experiment Platform Based on SAKURA-G Hardware Circuit

Research on Power Attack Comprehensive Experiment Platform B...

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CENet 2017-the 7th International Conference on computer Engineering and Networks

作者： Ge Jiao Lang Li Yi Zou College of Computer Science and Technology Hengyang Normal UniversityHunan Provincial Engineering Laboratory for Technology of Traditional Settlements DigitalizationHunan Provincial Key Laboratory of Intelligent Information Processing and Application College of Computer Science and Technology Hengyang Normal University

The power attack of the hardware circuit is going through the steps of algorithm writen in FPGA,power consumption,data processing and *** order to solve the problem of the existing power attack experimental platform because the processing steps are too scattered,feature complex operations and other issues,we've thus developed a higher degree of integration of the experimental *** advanced encryption standard(AES) algorithm is taken as an example to illustrate the whole process of implementing the correlation power analysis(CPA)attack on the experimental *** AES algorithm will be downloaded to the SAKURA-G experiment board,acquire the algorithm runtime power leakage,carry out the energy analysis because related attacks on information may leak location,and restore the AES first round of the first byte of the *** results show that the comprehensive experimental platform will integrate these steps into a platform,simplify the operation process,ensure the accuracy of power acquisition,realize the parallel data processing and improve the accuracy and efficiency of power attack.

关键词： CPA AES Research on Power Attack Comprehensive Experiment Platform Based on SAKURA-G Hardware Circuit

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