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arXiv 2018年

作者： Abe, K. Abe, Ke. Aihara, H. Aimi, A. Akutsu, R. Andreopoulos, C. Anghel, I. Anthony, L.H.V. Antonova, M. Ashida, Y. Aushev, V. Barbi, M. Barker, G.J. Barr, G. Beltrame, P. Berardi, V. Bergevin, M. Berkman, S. Berns, L. Berry, T. Bhadra, S. Bravo-Berguño, D. Blaszczyk, F.D.M. Blondel, A. Bolognesi, S. Boyd, S.B. Bravar, A. Bronner, C. Buizza Avanzini, M. Cafagna, F.S. Cole, A. Calland, R. Cao, S. Cartwright, S.L. Catanesi, M.G. Checchia, C. Chen-Wishart, Z. Choi, J.H. Choi, K. Coleman, J. Collazuol, G. Cowan, G. Cremonesi, L. Dealtry, T. de Rosa, G. Densham, C. Dewhurst, D. Drakopoulou, E.L. Di Lodovico, F. Drapier, O. Dumarchez, J. Dunne, P. Dziewiecki, M. Emery, S. Esmaili, A. Evangelisti, A. Fernández-Martinez, E. Feusels, T. Finch, A. Fiorentini, A. Fiorillo, G. Fitton, M. Frankiewicz, K. Friend, M. Fujii, Y. Fukuda, Y. Fukuda, D. Ganezer, K. Giganti, C. Gonin, M. Grant, N. Gumplinger, P. Hadley, D.R. Hartfiel, B. Hartz, M. Hayato, Y. Hayrapetyan, K. hill, J. hirota, S. Horiuchi, S. Ichikawa, A.K. Iijima, T. Ikeda, M. Imber, J. Inoue, K. Insler, J. Intonti, R.A. Ioannisian, A. Ishida, T. Ishino, H. Ishitsuka, M. Itow, Y. Iwamoto, K. Izmaylov, A. Jamieson, B. Jang, H.I. Jang, J.S. Jeon, S.H. Jiang, M. Jonsson, P. Joo, K.K. Kaboth, A. Kachulis, C. Kajita, T. Kameda, J. Kataoka, Y. Katori, T. Kayrapetyan, K. Kearns, E. Khabibullin, M. Khotjantsev, A. Kim, J.H. Kim, J.Y. Kim, S.B. Kim, S.Y. King, S. Kishimoto, Y. Kobayashi, T. Koga, M. Konaka, A. Kormos, L.L. Koshio, Y. Korzenev, A. Kowalik, K.L. Kropp, W.R. Kudenko, Y. Kurjata, R. Kutter, T. Kuze, M. Labarga, L. Lagoda, J. Lasorak, P.J.J. Laveder, M. Lawe, M. Learned, J.G. Lim, I.T. Lindner, T. Litchfield, R.P. Longhin, A. Loverre, P. Lou, T. Ludovici, L. Ma, W. Magaletti, L. Mahn, K. Malek, M. Maret, L. Mariani, C. Martens, K. Marti, Ll. Martin, J.F. Marzec, J. Matsuno, S. Mazzucato, E. McCarthy, M. McCauley, N. McFarland, K.S. McGrew, C. Mefodiev, A. Boston University Department of Physics BostonMA United States University of British Columbia Department of Physics and Astronomy VancouverBC Canada University of California Davis Department of Physics DavisCA United States University of California Irvine Department of Physics and Astronomy IrvineCA United States California State University Department of Physics CarsonCA United States IRFU CEA Saclay Gif-sur-Yvette France Chonnam National University Department of Physics Gwangju Korea Republic of Dongshin University Department of Physics Naju Korea Republic of Ecole Polytechnique IN2P3-CNRS Laboratoire Leprince-Ringuet Palaiseau France University of Edinburgh School of Physics and Astronomy Edinburgh United Kingdom University of Geneva Section de Physique DPNC Geneva Switzerland GIST College Gwangju Institute of Science and Technology Gwangju500-712 Korea Republic of University of Hawaii Department of Physics and Astronomy HonoluluHI United States Imperial College London Department of Physics London United Kingdom INFN Sezione di Bari Universit'a e Politecnico di Bari Bari Italy INFN Sezione di Napoli Università di Napoli Dipartimento di Fisica Napoli Italy INFN Sezione di Padova Università di Padova Dipartimento di Fisica Padova Italy INFN Sezione di Roma Universita' La Sapienza Dipartimento di Fisica Roma Italy Institute for Nuclear Research of the Russian Academy of Sciences Moscow Russia Iowa State University Department of Physics and Astronomy AmesIA United States Tsukuba Ibaraki Japan Kobe University Department of Physics Kobe Japan Kyoto University Department of Physics Kyoto Japan Laboratoire de Physique Nucleaire et de Hautes Energies UPMC Universite Paris-Diderot CNRS IN2P3 Paris France Lancaster University Physics Department Lancaster United Kingdom University of Liverpool Department of Physics Liverpool United Kingdom Los Alamos National Laboratory New Mexico United States Louisiana State University D

Hyper-Kamiokande is a next generation underground water Cherenkov detector, based on the highly successful Super-Kamiokande experiment. It will serve as a far detector, 295km away, of a long baseline neutrino experiment for the upgraded J-PARC beam. It will also be a detector capable of observing - far beyond the sensitivity of the Super-Kamiokande detector - proton decay, atmospheric neutrinos, and neutrinos from astronomical sources. The detector is much larger than Super-Kamiokande and presents new experimental challenges that are addressed in this report, where a full overview of the cavern and detector design R&D is given. This is also supported by a description of the upgraded beam and near detector suite. Based on the design of the experiment the expected sensitivity for both beam and atmospheric neutrinos, proton decays, solar and astrophysical neutrinos, non standard physics, etc. is shown. Copyright © 2018, The Authors. All rights reserved.

关键词： Neutrons

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Electroluminescence pulse shape and electron diffusion in liquid argon measured in a dual-phase tpc

arXiv

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arXiv 2018年

作者： Agnes, P. Albuquerque, I.F.M. Alexander, T. Alton, A.K. Asner, D.M. Ave, M.P. Back, H.O. Baldin, B. Batignani, G. Biery, K. Bocci, V. Bonfini, G. Bonivento, W. Bossa, M. Bottino, B. Budano, F. Bussino, S. Cadeddu, M. Cadoni, M. Calaprice, F. Caminata, A. Canci, N. Candela, A. Caravati, M. Cariello, M. Carlini, M. Carpinelli, M. Catalanotti, S. Cataudella, V. Cavalcante, P. Cavuoti, S. Chepurnov, A. Cicalò, C. Cocco, A.G. Covone, G. D’Angelo, D. D’Incecco, M. D’Urso, D. Davini, S. de Candia, A. de Cecco, S. de Deo, M. de Filippis, G. de Rosa, G. de Vincenzi, M. Demontis, P. Derbin, A.V. Devoto, A. Di Eusanio, F. Di Pietro, G. Dionisi, C. Edkins, E. Fan, A. Fiorillo, G. Fomenko, K. Franco, D. Gabriele, F. Gabrieli, A. Galbiati, C. Ghiano, C. Giagu, S. Giganti, C. Giovanetti, G.K. Goretti, A.M. Granato, F. Gromov, M. Guan, M. Guardincerri, Y. Gulino, M. Hackett, B.R. Herner, K. Hughes, D. Humble, P. Hungerford, E.V. Ianni, An James, I. Johnson, T.N. Keeter, K. Kendziora, C.L. Kochanek, I. Koh, G. Korablev, D. Korga, G. Kubankin, A. Kuss, M. Li, X. Lissia, M. Loer, B. Longo, G. Ma, Y. Machado, A.A. Machulin, I.N. Mandarano, A. Mari, S.M. Maricic, J. Martoff, C.J. Messina, A. Meyers, P.D. Milincic, R. Monte, A. Morrocchi, M. Mount, B.J. Muratova, V.N. Musico, P. Agasson, A. Navrer Nozdrina, A. Oleinik, A. Orsini, M. Ortica, F. Pagani, L. Pallavicini, M. Pandola, L. Pantic, E. Paoloni, E. Pazzona, F. Pelczar, K. Pelliccia, N. Pocar, A. Pordes, S. Qian, H. Razeti, M. Razeto, A. Reinhold, B. Renshaw, A.L. Rescigno, M. Riffard, Q. Romani, A. Rossi, B. Rossi, N. Sablone, D. Samoylov, O. Sands, W. Sanfilippo, S. Sant, M. Savarese, C. Schlitzer, B. Segreto, E. Semenov, D.A. Sheshukov, A. Singh, P.N. Skorokhvatov, M.D. Smirnov, O. Sotnikov, A. Stanford, C. Suffritti, G.B. Suvorov, Y. Tartaglia, R. Testera, G. Tonazzo, A. Trinchese, P. Unzhakov, E.V. Verducci, M. Vishneva, A. Vogelaar, B. Wada, M. APC Université Paris Diderot CNRS/IN2P3 CEA/Irfu Obs de Paris USPC Paris75205 France 67100 Italy Gran Sasso Science Institute L’Aquila67100 Italy Physics Department Augustana University Sioux FallsSD57197 United States Radiation Physics Laboratory Belgorod National Research University Belgorod308007 Russia School of Natural Sciences Black Hills State University Spearfish USA gINFN Cagliari Cagliari09042 Italy Physics Department Università degli Studi di Cagliari Cagliari09042 Italy Physics Institute Universidade Estadual de Campinas Campinas13083 Brazil INFN Laboratori Nazionali del Sud Catania95123 Italy Engineering and Architecture Faculty Università di Enna Kore Enna94100 Italy Fermi National Accelerator Laboratory BataviaIL60510 United States Physics Department Università degli Studi di Genova Genova16146 Italy INFN Genova Genova16146 Italy Department of Physics and Astronomy University of Hawai’i HonoluluHI96822 United States Department of Physics University of Houston qInstitute of HoustonTX77204 United States Interuniversity Consortium for Science and Technology of Materials Firenze50121 Italy Joint Institute for Nuclear Research Dubna141980 Russia M. Smoluchowski Institute of Physics Jagiellonian University Krakow30-348 Poland National Research Centre Kurchatov Institute Moscow123182 Russia LPNHE Université Pierre et Marie Curie CNRS/IN2P3 Sorbonne Universités Paris75252 France National Research Nuclear University MEPhI Moscow115409 Russia INFN Milano Milano20133 Italy Physics Department Università degli Studi di Milano Milano20133 Italy Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University Moscow119991 Russia INFN Napoli Napoli80126 Italy abPhysics Department Università degli Studi "Federico II" di Napoli Napoli80126 Italy Saint Petersburg Nuclear Physics Institute Gatchina188350 Russia Chemistry Biology and Biotechnology Department Università degli Studi di Perugia Perugi

We report the measurement of the longitudinal diffusion constant in liquid argon with the DarkSide-50 dual-phase time projection chamber. The measurement is performed at drift electric fields of 100 V/cm, 150 V/cm, and 200 V/cm using high statistics 39Ar decays from atmospheric argon. We derive an expression to describe the pulse shape of the electroluminescence signal (S2) in dual-phase TPCs. The derived S2 pulse shape is fit to events from the uppermost portion of the TPC in order to characterize the radial dependence of the signal. The results are provided as inputs to the measurement of the longitudinal diffusion constant DL, which we find to be (4.12 ± 0.09) cm2/s for a selection of 140 keV electron recoil events in 200 V/cm drift field and 2.8 kV/cm extraction field. To study the systematics of our measurement we examine datasets of varying event energy, field strength, and detector volume yielding a weighted average value for the diffusion constant of (4.09 ± 0.12) cm2/s. The measured longitudinal diffusion constant is observed to have an energy dependence, and within the studied energy range the result is systematically lower than other results in the literature. Copyright © 2018, The Authors. All rights reserved.

关键词： Diffusion

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Dielectric response and pyroelectric properties of lead-free ferroelectric Ba_(3)(VO_(4))_(2)

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Journal of Advanced Dielectrics 2015年第1期5卷 43-49页

作者： Biswajit Pati R.N.P.Choudhary Piyush R.Das B.C.Sutar Department of Physics J.K.B.K.Government CollegeCuttack 753004India Department of Physics Institute of Technical Education and Research Siksha O Anusandhan UniversityBhubaneswar 751030India Department of Physics Veer Surendra Sai University of Technology BurlaSambalpur 768018India Department of Physics Hi-Tech College Engineering Bhubaneswar 751025India

The current paper presents results of dielectric response,pyroelectric behavior and conductivity study of lead-free ferroelectric barium orthovanadate(Ba_(3)(VO_(4))_(2)or Ba_(3)V_(2)O_(8))ceramic,for a wide range of temperature and *** X-ray diffraction study suggests the formation of a single-phase compound in trigonal crystal *** SEM micrograph of gold-coated pellet sample shows well-defined and homogeneous *** studies of dielectric parameters(ε_(r)and tanδ)of the compound as a function of temperature and frequency reveal their independence over a wide range of temperature and *** nature of Polarization versus electric field(P-E)hysteresis loop of Ba_(3)V_(2)O_(8)at room temperature suggests its ferroelectric *** temperature dependence of pyroelectric coefficient and figure of merits of the sample support its dielectric *** nature of variation of dc conductivity with temperature confirms the Arrhenius and negative temperature coefficient of resistance(NTCR)behavior of the material.

关键词： X-ray diffraction Palmierite structure dielectric properties pyroelectric properties

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GPS mictro strip rectangular Patch antenna at 2.45 GHz mounted over angular towers

GPS mictro strip rectangular Patch antenna at 2.45 GHz mount...

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International Conference on Microwave, Optical and Communication engineering (ICMOCE)

作者： Geetanjali Raj Kanupriya Attrey Mayank Mrinal ECE Dept. ABES Engineering College Gzb ECE Dept. Hi-Tech Institute of Ebgineering & Technology Gzb ASET Amity University Noida

ISBN: (纸本)9781467369824

Antennas are mounted over Telecommunication Towers where Signaling is done at the cell site. Thus designing of such an antenna used in telecom unit is of great interest. A GPS Receiver Micro-Strip Patch antenna over CST Microwave Studio is designed. All GPS receivers use an antenna to receive these signals. The signals from the GPS satellites also operate in the C band the antenna must have a clear view of the sky and thus be mounted on a roof, or in some cases in a window. The antennas are relatively small, and are connected to the GPS receiver typically via coaxial cable.

关键词： Patch antennas Antenna radiation patterns Global Positioning System Substrates Microwave antennas Receivers

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A new equation of state for 1, 1, 1, 3, 3-pentafluoropropane (R-245fa) 24

A new equation of state for 1, 1, 1, 3, 3-pentafluoropropane...

引用

24th IIR International Congress of Refrigeration, ICR 2015

作者： Akasaka, Ryo Zhou, Yong Lemmon, Eric W. Faculty of Engineering Department of Mechanical Engineering Kyushu Sangyo University 2-3-1 Matsukadai Higashi-ku Fukuoka8138503 Japan Co. Ltd. Zhangjiang Hi-Tech Park 430 Li Bing Road Shanghai201203 China Applied Chemicals and Materials Division National Institute of Standards and Technology 325 Broadway BoulderCO80305 United States

ISBN: (纸本)9782362150128

A new fundamental equation of state explicit in the Helmholtz energy is presented for 1, 1, 1, 3, 3-pentafluoropropane (R-245fa). The functional form uses Gaussian bell-shaped terms, according to recent trends in the development of accurate equations of state. The equation is valid for temperatures between the triple point (170.0 K) and 440 K, and for pressures up to 200 MPa. Estimated uncertainties in this range are 0.1 % for vapor pressures, 0.1 % for saturated liquid densities, 0.1 % for liquid densities below 70 MPa, 0.2 % for densities at higher pressures, 0.3 % for vapor densities, 0.3 % for liquid sound speeds, and 0.1 % for vapor sound speeds. The uncertainties in the critical region are higher for all properties except vapor pressures. The equation shows reasonable extrapolation behavior at extremely low and high temperatures, and at high pressures.

关键词： Uncertainty analysis

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Polymorphism-Dependent and Switchable Emission of Butterfly-Like Bis(diarylmethylene)dihydroanthracenes

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Chemistry of Materials 2015年第19期27卷 6601-6607页

作者： He, Zikai Zhang, Liuqing Mei, Ju Zhang, Tian Lam, Jacky W. Y. Shuai, Zhigang Dong, Yong Qiang Tang, Ben Zhong Beijing Key Laboratory of Energy Conversion and Storage Materials Department of Chemistry Beijing Normal University No. 19 XinJieKouWai Street Beijing100875 China HKUST-Shenzhen Research Institute No. 9 Yuexing First RD South Area Hi-tech Park Nanshan Shenzhen518057 China Key Laboratory of Organic OptoElectronics and Molecular Engineering Department of Chemistry Tsinghua University Beijing100084 China Department of Chemistry Division of Life Science State Key Laboratory of Molecular Neuroscience Institute for Advanced Study Institute of Molecular Functional Materials Division of Biomedical Engineering Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong

Organic fluorophores with reversible emission switching behavior are promising materials for applications in sensors, optical recording, security inks, and optoelectronics. A variety of aggregation-induced emission (AIE) luminogens with mechanochromic luminescence has been prepared, and the transformation of efficient bluer-emitting crystals to amorphous powders with redder and weaker emission is proposed to be the cause for such behavior. However, detailed mechanistic understanding from experimental to theoretical is lacking. In this work, we present the design and synthesis of a group of bis(diarylmethylene)dihydroanthracenes with butterfly-like shapes. These molecules exhibit aggregation-induced emission characteristics due to the restriction of intramolecular motion in the aggregated state. They show mechanochromism, because of the transformation between crystal and amorphous states with different colors and efficiencies aided by grinding/heating or solvent fuming processes. By investigation of their single-crystal structures and theoretical calculations, the loose molecular packing with noncovalent intermolecular interactions, the extent of conformational twisting, and the packing density of the luminogens, as well as freedom of intermolecular motion in the excited state, are stemmed for their reversible polymorphism-dependent emission behaviors. © 2015 American Chemical Society.

关键词： Excited states

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Mechanochromic Luminescence of Aggregation-Induced Emission Luminogens

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Journal of Physical Chemistry Letters 2015年第17期6卷 3429-3436页

作者： Dong, Yong Qiang Lam, Jacky W. Y. Tang, Ben Zhong Beijing Key Laboratory of Energy Conversion and Storage Materials Department of Chemistry Beijing Normal University Beijing100875 China Department of Chemistry Division of Life Science State Key Laboratory of Molecular Neuroscience Institute for Advanced Study Institute of Molecular Functional Materials Division of Biomedical Engineering Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong HKUST-Shenzhen Research Institute No. 9 Yuexing first RD South Area Hi-tech Park Nanshan Shenzhen518057 China Guangdong Innovative Research Team SCUT-HKUST Joint Research Laboratory State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou510640 China

Mechanochromic (MC) luminogens have found promising applications in mechanosensors, security papers, and optical storage for their change in emission behaviors in response to mechanical stimuli. Examples on MC luminescent materials are rare before the discovery of MC luminescence in aggregation-induced emission (AIE) luminogens. The twisted conformations of AIE luminogens (AIEgens) with appropriate crystallization capability afford loosely packing patterns, which facilitates their phase transformation in the solid state. The amorphous films of AIEgens exhibit enhanced emission intensity upon pressurization due to the increased molecular interactions, whereas crystals of AIEgens exhibit MC luminescence due to their amorphization by mechanical stimuli. AIEgens enrich the type of MC luminogens but those showing high emission contrast and multicolor emission switching and those working in a turn-on emission mode are seldom reported. Disclosure of the design strategy of high performance MC luminogens and exploration of their high-tech applications may be the future research directions for MC luminogens. (Figure Presented). © 2015 American Chemical Society.

关键词： Luminescence

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Multi-class image classification based on fast stochastic gradient boosting

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Informatica (Slovenia) 2014年第2期38卷 145-153页

作者： Li, Lin Wu, Yue Ye, Mao School. of Computer Science and Engineering University of Electronic Science and Technology of China No.2006 Xiyuan Ave West Hi-Tech Zone Chengdu China Sichuan TOP IT Vocational Institute No.2000 Xixin Ave West Hi-Tech Zone Chengdu China

Nowadays, image classification is one of the hottest and most difficult research domains. It involves two aspects of problem. One is image feature representation and coding, the other is the usage of classifier. For better accuracy and running efficiency of high dimension characteristics circumstance in image classification, this paper proposes a novel framework for multi-class image classification based on fast stochastic gradient boosting. We produce the image feature representation by extracting PHOW descriptor of image, then map the descriptor though additive kernels, finally classify image though fast stochastic gradient boosting. In order to further boost the running efficiency, We propose method of local parallelism and an error control mechanism for simplifying the iterating process. Experiments are tested on two data sets: Optdigits, 15-Scenes. The experiments compare decision tree, random forest, extremely random trees, stochastic gradient boosting and its fast versions. The experiment justifies that (1) stochastic gradient boosting and its extensions are apparent superior to other algorithms on overall accuracy;(2) our fast stochastic gradient boosting algorithm greatly saves time while keeping high overall accuracy.

关键词： Image classification

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Remote image fusion based on PCA and dual tree compactly supported shearlet transform

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Journal of Information hiding and Multimedia Signal Processing 2014年第3期5卷 485-496页

作者： Duan, Chang Huang, Qi Hong Gangwang, Xue Wang, Shuai School of Electronic Engineering Research Institute of Electronic Science and Technology University of Electronic Science and Technology Qingshuihe Campus:No.2006 Xiyuan Ave West Hi-Tech Zone Chengdu Sichuan China Electronic Engineering College Chengdu University of Information Technology 24 Xuefu Road Southwest Airport Economic Development Zone Chengdu Sichuan China School of Electronic Engineering University of Electronic Science and Technology Qingshuihe Campus:No.2006 Xiyuan Ave West Hi-Tech Zone Chengdu Sichuan China

This paper presents a novel remote sensing image fusion algorithm, which implements panchromatic sharpening of multispectral data through application of the principal component analysis (PCA) transform and the dual-tree compactly supported shearlet transform (DT CSST). Shearlet transforms provide near optimal representation of the anisotropic features of an image. The compactly supported shearlet transform (CSST) as the spatial domain implementation of discrete shearlet transform may represent the directions by the way of dilation operations directly in spatial domain. Since most of the prominent features of images, such as edges and regions, have finite regions in spatial domain, CSST is very suitable for image fusion. However, the conventional CSST, which is shift-variant, causes distortions in fused images. With the embedded structure of dual-tree (DT) in the CSST, the shift-variant properties can be effectively reduced. The evaluation results of experiments indicated that the proposed method is superior to other PCA and multi-scale transform based methods such as curvelet, band limited shearlet transform (BLST), which is an invariant shearlet transform,à trous wavelet transform, the dual-tree complex wave transform (DTCWT), and the discrete wavelet transform (DWT).

关键词： Principal component analysis

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Proposed and method presentation of bridge model updating

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Key engineering Materials 2014年 619卷 11-17页

作者： Wang, Dejun Feng, Demin Jin, Bao School of Transportation Science and Engineering Harbin Institute of Technology Harbin 150090 China JiNan Hi-tech Holding Group Shandong 250000 China JiNan Urban Construction Group Shandong 250000 China

ISBN: (纸本)9783038351719

This article briefly reviews the two methods of finite element model (FEM) updating, such as direct matrix methods and the sensitivity-based model updating methods. In addition, the problem in bridge structure model updating often needs to solve large-scale ill-posed linear systems. Therefore, two regularization methods of Tikhonov and TSVD were introduced. Meanwhile, for these systems, it is proposed that the application of the two kinds of regularization method to solve the problem which the test data contaminated by noise may rarely lead to a physically meaningful updated model. © (2014) Trans tech Publications, Switzerland.

关键词： Finite element method

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