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How Shale Gas will Shape China's Future? an Evaluation Based on Dynamic Energy-CGE Model

Energy Procedia 2017年 105卷 3349-3354页

作者： Shihui Zhang Can Wang Wenjia Cai State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC) and School of Environment Tsinghua University Beijing 100084 China Ministry of Education Key Laboratory for Earth System Modeling and Center for Earth System Science Room S925 Meng Minwei Science Building Tsinghua University Beijing 100084 China

The potential of shale gas development in China is huge but research that assesses the impacts of shale gas development on China's economy and carbon emissions are rare. This paper used a dynamic CGE model with energy and carbon emission modules to evaluate the impacts under different scenarios. The results implied that large scale of shale gas development will stimulate economy, when the supply of shale gas increases by 500% from 2010 to 2030, the GDP in 2030 will be 2.59% higher than BAU scenario; technology change that reduces the costs of shale gas utilization will not further stimulate economic growth on the basis of large scale exploitation, but will improve the diffusion of gas and make the energy structure cleaner therefore contribute the carbon mitigation. Hence, it is important for policy makers to take into account the varied effects of different shale gas promotion approaches.

关键词： Shale Gas low carbon development economy dynamic CGE model

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Overview of KAGRA : Data transfer and management

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Progress of Theoretical and Experimental Physics 2023年第10期2023卷

作者： Akutsu, T Ando, M Arai, K Arai, Y Araki, S Araya, A Aritomi, N Asada, H Aso, Y Bae, S Bae, Y Baiotti, L Bajpai, R Barton, M A Cannon, K Cao, Z Capocasa, E Chan, M Chen, C Chen, K Chen, Y Chiang, C-Y Chu, H Chu, Y-K Eguchi, S Enomoto, Y Flaminio, R Fujii, Y Fujikawa, Y Fukunaga, M Fukushima, M Gao, D Ge, G Ha, S Hagiwara, A Haino, S Han, W-B Hasegawa, K Hattori, K Hayakawa, H Hayama, K Himemoto, Y Hiranuma, Y Hirata, N Hirose, E Hong, Z Hsieh, B Huang, G-Z Huang, H-Y Huang, P Huang, Y-C Huang, Y Hui, D C Y Ide, S Ikenoue, B Imam, S Inayoshi, K Inoue, Y Ioka, K Ito, K Itoh, Y Izumi, K Jeon, C Jin, H-B Jung, K Jung, P Kaihotsu, K Kajita, T Kakizaki, M Kamiizumi, M Kanda, N Kang, G Kawaguchi, K Kawai, N Kawasaki, T Kim, C Kim, J Kim, J C Kim, W S Kim, Y-M Kimura, N Kita, N Kitazawa, H Kobayashi, Y Kojima, Y Kokeyama, K Komori, K Kong, A K H Kotake, K Kozakai, C Kozu, R Kumar, R Kume, J Kuo, C Kuo, H-S Kuromiya, Y Kuroyanagi, S Kusayanagi, K Kwak, K Lee, H K Lee, H W Lee, R Leonardi, M Li, K L Lin, L C-C Lin, C-Y Lin, F-K Lin, F-L Lin, H L Liu, G C Luo, L-W Majorana, E Marchio, M Michimura, Y Mio, N Miyakawa, O Miyamoto, A Miyazaki, Y Miyo, K Miyoki, S Mori, Y Morisaki, S Moriwaki, Y Nagano, K Nagano, S Nakamura, K Nakano, H Nakano, M Nakashima, R Nakayama, Y Narikawa, T Naticchioni, L Negishi, R Quynh, L Nguyen Ni, W-T Nishizawa, A Nozaki, S Obuchi, Y Ogaki, W Oh, J J Oh, K Oh, S H Ohashi, M Ohashi, T Ohishi, N Ohkawa, M Ohta, H Okutani, Y Okutomi, K Oohara, K Ooi, C Oshino, S Otabe, S Pan, K Pang, H Parisi, A Park, J Arellano, F E Peña Pinto, I Sago, N Saito, S Saito, Y Sakai, K Sakai, Y Sakuno, Y Sasaki, Y Sato, S Sato, T Sawada, T Sekiguchi, T Sekiguchi, Y Shao, L Shibagaki, S Shimizu, R Shimoda, T Shimode, K Shinkai, H Shishido, T Shoda, A Somiya, K Son, E J Sotani, H Sugimoto, R Suresh, J Suzuki, T Tagoshi, H Takahashi, H Takahashi, R Takamori, A Takano, S Takeda, H Takeda, M Tanaka, H Tanaka, K Tanaka, T Tanioka, S Martin, E N Tapia San Telada, S Tomaru, T Tomigami, Y Tomura, T Travasso, F Trozzo, L Tsang, T Ts Gravitational Wave Science Project National Astronomical Observatory of Japan (NAOJ) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Advanced Technology Center National Astronomical Observatory of Japan (NAOJ) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Department of Physics The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Research Center for the Early Universe (RESCEU) The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Institute for Cosmic Ray Research (ICRR) KAGRA Observatory The University of Tokyo 5-1-5 Kashiwa-no-Ha Kashiwa City Chiba 277-8582 Japan Accelerator Laboratory High Energy Accelerator Research Organization (KEK) 1-1 Oho Tsukuba City Ibaraki 305-0801 Japan Earthquake Research Institute The University of Tokyo 1-1-1 Yayoi Bunkyo-ku Tokyo 113-0032 Japan Department of Mathematics and Physics Hirosaki University 3 Bunkyo-cho Hirosaki City Aomori 036-8561 Japan Kamioka Branch National Astronomical Observatory of Japan (NAOJ) 238 Higashi-Mozumi Kamioka-cho Hida City Gifu 506-1205 Japan The Graduate University for Advanced Studies (SOKENDAI) 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Korea Institute of Science and Technology Information (KISTI) 245 Daehak-ro Yuseong-gu Daejeon 34141 Korea National Institute for Mathematical Sciences 70 Yuseong-daero 1689 Beon-gil Yuseong-gu Daejeon 34047 Korea International College Osaka University 1-1 Machikaneyama-cho Toyonaka City Osaka 560-0043 Japan School of High Energy Accelerator Science The Graduate University for Advanced Studies (SOKENDAI) 1-1 Oho Tsukuba City Ibaraki 305-0801 Japan Department of Astronomy Beijing Normal University No. 19 Xinjiekou Street Beijing 100875 China Department of Applied Physics Fukuoka University 8-19-1 Nanakuma Jonan Fukuoka City Fukuoka 814-0180 Japan Department of Physics Tamkang University No. 151 Yingzhuan Rd. Danshui Dist. New Taipei City 25137 Taiwan Department of Physics and Institute of Astronomy Nation

KAGRA is a newly built gravitational wave observatory, a laser interferometer with a 3 km arm length, located in Kamioka, Gifu prefecture, Japan. In this article, we describe the KAGRA data management system, i.e., recording of data, transfer from the KAGRA experiment site to computing resources, as well as data distribution to tier sites, including international sites in Taiwan and Korea. The amount of KAGRA data exceeded 1.0 PiB and increased by about 1.5 TB per day during operation in 2020. Our system has succeeded in data management, and has achieved performance that can withstand observations after 2023, that is, a transfer rate of 20 MB s-1or more and file storage of sufficient capacity for petabyte class. We also discuss the sharing of data between the global gravitational-wave detector network with other experiments, namely LIGO and Virgo. The latency, which consists of calculation of calibrated strain data and transfer time within the global network, is very important from the view of multi-messenger astronomy using gravitational waves. Real-time calbrated data delivered from the KAGRA detector site and other detectors to our computing system arrive with about 4–15 seconds of latency. These latencies are sufficiently short compared to the time taken for gravitational wave event search computations. We also established a high-latency exchange of offline calibrated data that was aggregated with a better accuracy compared with real-time data.

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Using Sectoral Approach as Complement to the INDC Framework: An Analysis Based on the CGE Model

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Energy Procedia 2017年 105卷 3433-3439页

作者： Yaqian Mu Can Wang Wenjia Cai State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC) and School of Environment Tsinghua University Beijing 100084 China Ministry of Education Key Laboratory for Earth System Modeling and Center for Earth System Science Room S925 Meng Minwei Science Building Tsinghua University Beijing 100084 China

Although 169 Intended Nationally Determined Contributions (INDC) have been submitted up to June 2016, there is still around 1.2-1.7 Gillion tons’ CO 2 emission gap in 2030 to realize the 2 °C target. The main objectives of this paper are to analyze the significance and feasibility of conducting a sectoral approach as complement to cover the emission gap on the base of INDC framework. The scenario analysis in this paper take three key sectors, electricity, iron and steel (IST) and cement, into consideration. The results affirmed the earlier judgment that additional sectoral reduction in the electricity sector could significantly reduce global CO 2 emissions. As a result, this study suggests developing consistent sectoral targets for the electricity sector together with the pledged INDC targets. To conduct this sectoral approach, at least 4070.7 million dollars of extra expenditure are required from developed countries to cover the loss of developing countries, but the results of this investment could be as much as 154 million tons’ CO 2 reductions. This paper also concludes with suggestions such as aggressive global mitigation pledges and deeper international cooperation on sectoral technology.

关键词： INDC Energy Policy Sectoral Reduction Technological Benchmark CGE Model

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The JWST Early Release science Program for the Direct Imaging & Spectroscopy of Exoplanetary systems

arXiv

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arXiv 2022年

作者： Hinkley, Sasha Carter, Aarynn L. Ray, Shrishmoy Skemer, Andrew Biller, Beth Choquet, Elodie Millar-Blanchaer, Maxwell A. Sallum, Stephanie Miles, Brittany Whiteford, Niall Patapis, Polychronis Perrin, Marshall Pueyo, Laurent Schneider, Glenn Stapelfeldt, Karl Wang, Jason Ward-Duong, Kimberly Bowler, Brendan P. Boccaletti, Anthony Girard, Julien H. Hines, Dean Kalas, Paul Kammerer, Jens Kervella, Pierre Leisenring, Jarron Pantin, Eric Zhou, Yifan Meyer, Michael Liu, Michael C. Bonnefoy, Mickael Currie, Thayne McElwain, Michael Metchev, Stanimir Wyatt, Mark Absil, Olivier Adams, Jea Barman, Travis Baraffe, Isabelle Bonavita, Mariangela Booth, Mark Bryan, Marta Chauvin, Gael Chen, Christine Danielski, Camilla De Furio, Matthew Factor, Samuel M. Fitzgerald, Michael P. Fortney, Jonathan J. Grady, Carol Greenbaum, Alexandra Henning, Thomas Hoch, Kielan K.W. Janson, Markus Kennedy, Grant Kenworthy, Matthew Kraus, Adam Kuzuhara, Masayuki Lagage, Pierre-Olivier Lagrange, Anne-Marie Launhardt, Ralf Lazzoni, Cecilia Lloyd, James Marino, Sebastian Marley, Mark Martinez, Raquel Marois, Christian Matthews, Brenda Matthews, Elisabeth C. Mawet, Dimitri Mazoyer, Johan Phillips, Mark Petrus, Simon Quanz, Sascha P. Quirrenbach, Andreas Rameau, Julien Rebollido, Isabel Rickman, Emily Samland, Matthias Sargent, B. Schlieder, Joshua E. Sivaramakrishnan, Anand Stone, Jordan M. Tamura, Motohide Tremblin, Pascal Uyama, Taichi Vasist, Malavika Vigan, Arthur Wagner, Kevin Ygouf, Marie University of Exeter Astrophysics Group Physics Building Stocker Road ExeterEX4 4QL United Kingdom Department of Astronomy & Astrophysics University of California Santa CruzCA95064 United States SUPA Institute for Astronomy The University of Edinburgh Royal Observatory Blackford Hill EdinburghEH9 3HJ United Kingdom Aix Marseille Univ. CNRS CNES LAM Marseille France Department of Physics University of California Santa Barbara Santa BarbaraCA United States Department of Physics and Astronomy University of California Irvine IrvineCA United States Department of Astrophysics American Museum of Natural History Central Park West at 79th Street NY10024 United States Institute for Particle Physics & Astrophysics ETH Zurich Zurich8092 Switzerland Space Telescope Science Institute 3700 San Martin Drive BaltimoreMD21218 United States Steward Observatory University of Arizona 933 N. Cherry Ave TucsonAZ85721-0065 United States Jet Propulsion Laboratory California Institute of Technology M/S 321-100 4800 Oak Grove Drive PasadenaCA91109 United States Department of Astronomy California Institute of Technology PasadenaCA91125 United States Department of Physics and Astronomy Northwestern University EvanstonIL60208 United States Department of Astronomy Smith College NorthamptonMA01063 United States Department of Astronomy The University of Texas at Austin 2515 Speedway Boulevard Stop C1400 AustinTX78712 United States LESIA Observatoire de Paris Université PSL CNRS Sorbonne Université Université Paris Cité 5 place Jules Janssen Meudon92195 France Department of Astronomy University of California BerkeleyCA94720 United States IRFU/DAp Département D’Astrophysique CE Saclay Gif-sur-Yvette France Department of Astronomy University of Michigan Ann ArborMI48109 United States Institute of Astronomy University of Hawaii 2860 Woodlawn Drive HonoluluHI96822 United States Université Grenoble Alpes CNRS Institut de Planétologie et d’As

The direct characterization of exoplanetary systems with high contrast imaging is among the highest priorities for the broader exoplanet community. As large space missions will be necessary for detecting and characterizing exo-Earth twins, developing the techniques and technology for direct imaging of exoplanets is a driving focus for the community. For the first time, JWST will directly observe extrasolar planets at mid-infrared wavelengths beyond 5 µm, deliver detailed spectroscopy revealing much more precise chemical abundances and atmospheric conditions, and provide sensitivity to analogs of our solar system ice-giant planets at wide orbital separations, an entirely new class of exoplanet. However, in order to maximise the scientific output over the lifetime of the mission, an exquisite understanding of the instrumental performance of JWST is needed as early in the mission as possible. In this paper, we describe our 55-hour Early Release science Program that will utilize all four JWST instruments to extend the characterisation of planetary mass companions to ∼15 µm as well as image a circumstellar disk in the mid-infrared with unprecedented sensitivity. Our program will also assess the performance of the observatory in the key modes expected to be commonly used for exoplanet direct imaging and spectroscopy, optimize data calibration and processing, and generate representative datasets that will enable a broad user base to effectively plan for general observing programs in future cycles. © 2022, CC BY.

关键词： Extrasolar planets

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A decoupling two-grid method for the time-dependent poisson-nernst-planck equations

arXiv

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arXiv 2018年

作者： Shen, Ruigang Shu, Shi Yang, Ying Lu, Benzhuo School of Mathematics and Computational Science Xiangtan University Xiangtan Hunan411105 China Hunan Key Laboratory for Computation and Simulation in Science and Engineering Xiangtan University Xiangtan Hunan411105 China School of Mathematics and Computational Science Guangxi Colleges Universities Key Laboratory of Data Analysis and Computation Guangxi Key Laboratory of Cryptography and information Security Guilin University of Electronic Technology Guilin Guangxi541004 China Institute of Computational Mathematics and Scientific/Engineering Computing National Center for Mathematics and Interdisciplinary Sciences Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing100190 China

We study a two-grid strategy for decoupling the time-dependent Poisson-Nernst-Planck equations describing the mass concentration of ions and the electrostatic potential. The computational system is decoupled to smaller systems by using coarse space solutions at each time level, which can speed up the solution process compared with the finite element method combined with the Gummel iteration. We derive the optimal error estimates in L2 norm for both semi- and fully discrete finite element approximations. Based on the a priori error estimates, the error estimates in H1 norm are presented for the two-grid algorithm. The theoretical results indicate this decoupling method can retain the same accuracy as the finite element method. Numerical experiments including the Poisson-Nernst-Planck equations for an ion channel show the efficiency and effectiveness of the decoupling two-grid method. Copyright © 2018, The Authors. All rights reserved.

关键词： Finite element method

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Radiative Cooling of the Thermally Isolated system in KAGRA Gravitational Wave Telescope

Radiative Cooling of the Thermally Isolated System in KAGRA ...

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10th Asian Conference on Applied Superconductivity and Cryogenics, ACASC 2020, 2nd International Cryogenic Materials Conference in Asia, Asian-ICMC 2020 and CSSJ Joint Conference

作者： Akutsu, T. Ando, M. Arai, K. Arai, Y. Araki, S. Araya, A. Aritomi, N. Aso, Y. Bae, S.-W. Bae, Y.-B. Baiotti, L. Bajpai, R. Barton, M.A. Cannon, K. Capocasa, E. Chan, M.-L. Chen, C.-S. Chen, K.-H. Chen, Y.-R. Chu, H.-Y. Chu, Y.-K. Eguchi, S. Enomoto, Y. Flaminio, R. Fujii, Y. Fukunaga, M. Fukushima, M. Ge, G.-G. Hagiwara, A. Haino, S. Hasegawa, K. Hayakawa, H. Hayama, K. Himemoto, Y. Hiranuma, Y. Hirata, N. Hirose, E. Hong, Z. Hsieh, B.-H. Huang, G.-Z. Huang, P.-W. Huang, Y.-J. Ikenoue, B. Imam, S. Inayoshi, K. Inoue, Y. Ioka, K. Itoh, Y. Izumi, K. Jung, K. Jung, P. Kajita, T. Kamiizumi, M. Kanda, N. Kang, G.-W. Kawaguchi, K. Kawai, N. Kawasaki, T. Kim, C. Kim, J. Kim, W. Kim, Y.-M. Kimura, N. Kita, N. Kitazawa, H. Kojima, Y. Kokeyama, K. Komori, K. Kong, A.K.H. Kotake, K. Kozakai, C. Kozu, R. Kumar, R. Kume, J. Kuo, C.-M. Kuo, H.-S. Kuroyanagi, S. Kusayanagi, K. Kwak, K. Lee, H.-K. Lee, H.-W. Lee, R.-K. Leonardi, M. Lin, C.-Y. Lin, F.-L. Lin, L.C.-C. Liu, G.-C. Luo, L.-W. Marchio, M. Michimura, Y. Mio, N. Miyakawa, O. Miyamoto, A. Miyazaki, Y. Miyo, K. Miyoki, S. Morisaki, S. Moriwaki, Y. Nagano, K. Nagano, S. Nakamura, K. Nakano, H. Nakano, M. Nakashima, R. Narikawa, T. Negishi, R. Ni, W.-T. Nishizawa, A. Obuchi, Y. Ogaki, W. Oh, J.J. Oh, S.-H. Ohashi, M. Ohishi, N. Ohkawa, M. Okutomi, K. Oohara, K. Ooi, C.-P. Oshino, S. Pan, K.-C. Pang, H.-F. Park, J. Peiia Arellano, F.E. Pinto, I. Sago, N. Saito, S. Saito, Y. Sakai, K. Sakai, Y. Sakuno, Y. Sato, S. Sato, T. Sawada, T. Sekiguchi, T. Sekiguchi, Y. Shibagaki, S. Shimizu, R. Shimoda, T. Shimode, K. Shinkai, H. Shishido, T. Shoda, A. Somiya, K. Son, E.J. Sotani, H. Sugimoto, R. Suzuki, T. Suzuki, T. Tagoshi, H. Takahashi, H. Takahashi, R. Takamori, A. Takano, S. Takeda, H. Takeda, M. Tanaka, H. Tanaka, K. Tanaka, K. Tanaka, T. Tanaka, T. Tanioka, S. Tapia San Martin, E.N. Telada, S. Tomaru, T. Tomigami, Y. 2-21-1 Osawa Mitaka-City Tokyo181-8588 Japan University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan Department of Physics University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan University of Tokyo 5-1-5 Kashiwa-no-Ha Kashiwa-City Chiba277-8582 Japan 1-1 Oho Tsukuba-City Ibaraki305-0801 Japan Earthquake Research Institute University of Tokyo 1-1-1 Yayoi Bunkyo-ku Tokyo113-0032 Japan 238 Higashi-Mozumi Kamioka-cho Hida-City Gifu Pref. Japan 2-21-1 Osawa Mitaka-City Tokyo181-8588 Japan 245 Daehak-ro Yuseong-gu Daejeon34141 Korea Republic of National Institute for Mathematical Sciences Yuseong-daero 1689 beon-gil 70 Daejeon Yuseong-gu34047 Korea Republic of Graduate School of Science Osaka University 1-1 Machikaneyama-cho Toyonaka-City Osaka560-0043 Japan 1-1 Oho Tsukuba-City Ibaraki305-0801 Japan Institute for Gravitational Research University of Glasgow Kelvin BuildingG12 8QQ United Kingdom Department of Applied Physics Fukuoka University Jonan Nanakuma Fukuoka814-0180 Japan Department of Physics Tamkang University No.151 Yingzhuan Rd. Danshui Dist. New Taipei-City25137 Taiwan Department of Physics Center for High Energy and High Field Physics National Central University No. 300 Zhongda Road Zhongyi District Taiyuan-City320 Taiwan Institute of Astronomy National Tsing Hua University No. 101 Kuang-Fu Road Section 2 Hsinchu30013 Taiwan Department of Physics National Tsing Hua University No. 101 Kuang-Fu Road Section 2 Hsinchu30013 Taiwan Department of Physics National Taiwan Normal University Sceince Campus National Taiwan Normal University Taipei116 Taiwan Univ. Grenoble Alpes Universite Savoie Mont Blanc CNRS IN2P3 AnnecyF-74941 France Department of Astronomy University of Tokyo 2-21-1 Osawa Mitaka-City Tokyo181-8588 Japan 2-21-1 Osawa Mitaka-City Tokyo181-8588 Japan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of

Radiative cooling of the thermally isolated system is investigated in KAGRA gravitational wave telescope. KAGRA is a laser interferometer-based detector and main mirrors constituting optical cavities are cool down to 20K to reduce noises caused by the thermal fluctuation. The mirror is suspended with the multi-stage pendulum to isolate any vibration. Therefore, this mirror suspension system has few heat links to reduce vibration injection. Thus, this system is mainly cooled down with thermal radiation. In order to understand the process of radiative cooling of the mirror, we analyzed cooling curve based on mass and specific heat. As a result, it was newly found that a cryogenic part called "cryogenic duct-shield"seems to have large contribution in the beginning of the mirror cooling. This finding will help to design new cooling system for the next generation cryogenic gravitational wave detector. © Published under licence by IOP Publishing Ltd.

关键词： Gravity waves

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Research on starlight hardware-in-the-loop simulator

Research on starlight hardware-in-the-loop simulator

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International Symposium on Optoelectronic technology and Application 2016(OTA 2016)——Conf.5 Optical Measurement technology and Instrument

作者： ZHANG Ying GAO Yang LIU Dongfang DU Huijie LEI Jie Science and Technology on Special System Simulation Laboratory Beijing Simulation Center

The starlight navigation is considered one of the most essential methods for spacecraft *** simulation system is a high-precision system with large fields of view and is designed to t

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First study of the two-body scattering involving charm hadrons

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Physical Review D 2022年第5期106卷 052010-052010页

作者： S. Acharya D. Adamová A. Adler J. Adolfsson G. Aglieri Rinella M. Agnello N. Agrawal Z. Ahammed S. Ahmad S. U. Ahn I. Ahuja Z. Akbar A. Akindinov M. Al-Turany S. N. Alam D. Aleksandrov B. Alessandro H. M. Alfanda R. Alfaro Molina B. Ali Y. Ali A. Alici N. Alizadehvandchali A. Alkin J. Alme G. Alocco T. Alt I. Altsybeev M. N. Anaam C. Andrei D. Andreou A. Andronic V. Anguelov F. Antinori P. Antonioli C. Anuj N. Apadula L. Aphecetche H. Appelshäuser S. Arcelli R. Arnaldi I. C. Arsene M. Arslandok A. Augustinus R. Averbeck S. Aziz M. D. Azmi A. Badalà Y. W. Baek X. Bai R. Bailhache Y. Bailung R. Bala A. Balbino A. Baldisseri B. Balis D. Banerjee Z. Banoo R. Barbera L. Barioglio M. Barlou G. G. Barnaföldi L. S. Barnby V. Barret C. Bartels K. Barth E. Bartsch F. Baruffaldi N. Bastid S. Basu G. Batigne D. Battistini B. Batyunya D. Bauri J. L. Bazo Alba I. G. Bearden C. Beattie P. Becht I. Belikov A. D. C. Bell Hechavarria F. Bellini R. Bellwied S. Belokurova V. Belyaev G. Bencedi S. Beole A. Bercuci Y. Berdnikov A. Berdnikova L. Bergmann M. G. Besoiu L. Betev P. P. Bhaduri A. Bhasin I. R. Bhat M. A. Bhat B. Bhattacharjee P. Bhattacharya L. Bianchi N. Bianchi J. Bielčík J. Bielčíková J. Biernat A. Bilandzic G. Biro S. Biswas J. T. Blair D. Blau M. B. Blidaru C. Blume G. Boca F. Bock A. Bogdanov S. Boi J. Bok L. Boldizsár A. Bolozdynya M. Bombara P. M. Bond G. Bonomi H. Borel A. Borissov H. Bossi E. Botta L. Bratrud P. Braun-Munzinger M. Bregant M. Broz G. E. Bruno M. D. Buckland D. Budnikov H. Buesching S. Bufalino O. Bugnon P. Buhler Z. Buthelezi J. B. Butt A. Bylinkin S. A. Bysiak M. Cai H. Caines A. Caliva E. Calvo Villar J. M. M. Camacho R. S. Camacho P. Camerini F. D. M. Canedo M. Carabas F. Carnesecchi R. Caron J. Castillo Castellanos E. A. R. Casula F. Catalano C. Ceballos Sanchez I. Chakaberia P. Chakraborty S. Chandra S. Chapeland M. Chartier S. Chattopadhyay T. G. Chavez T. Cheng C. Cheshkov B. Cheynis V. Chibante Barroso D. D. Chinellato S. Cho P. Chochula P. Christakoglou C. H. Christensen P. Christiansen T. Università degli Studi di Foggia Foggia Italy Nuclear Physics Group STFC Daresbury Laboratory Daresbury United Kingdom Jeonbuk National University Jeonju Republic of Korea Lawrence Berkeley National Laboratory Berkeley California USA European Organization for Nuclear Research (CERN) Geneva Switzerland Dipartimento DISAT del Politecnico and Sezione INFN Turin Italy INFN Sezione di Bologna Bologna Italy Department of Physics Aligarh Muslim University Aligarh India Joint Institute for Nuclear Research (JINR) Dubna Russia Faculty of Science P.J. Šafárik University Košice Slovakia Indonesian Institute of Sciences Jakarta Indonesia NRC Kurchatov Institute IHEP Protvino Russia Politecnico di Bari and Sezione INFN Bari Italy National Nuclear Research Center Baku Azerbaijan INFN Sezione di Torino Turin Italy Central China Normal University Wuhan China Instituto de Física Universidade Federal do Rio Grande do Sul (UFRGS) Porto Alegre Brazil COMSATS University Islamabad Islamabad Pakistan Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Bologna Italy Universidade Federal do ABC Santo Andre Brazil Department of Physics and Technology University of Bergen Bergen Norway INFN Sezione di Cagliari Cagliari Italy Institute of Space Science (ISS) Bucharest Romania School of Physics and Astronomy University of Birmingham Birmingham United Kingdom Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest Romania Niels Bohr Institute University of Copenhagen Copenhagen Denmark Warsaw University of Technology Warsaw Poland Physikalisches Institut Eberhard-Karls-Universität Tübingen Tübingen Germany INFN Sezione di Padova Padova Italy Laboratoire de Physique Subatomique et de Cosmologie Université Grenoble-Alpes CNRS-IN2P3 Grenoble France St. Petersburg State University St. Petersburg Russia Department of Physics University of Oslo Oslo Norway Westfälische Wilhelms-Universität Münster Institut für Kernphysik Münster

This article presents the first measurement of the interaction between charm hadrons and nucleons. The two-particle momentum correlations of pD− and p¯D+ pairs are measured by the ALICE Collaboration in high-multiplicity pp collisions at s=13 TeV. The data are compatible with the Coulomb-only interaction hypothesis within (1.1–1.5)σ. The level of agreement slightly improves if an attractive nucleon (N)D¯ strong interaction is considered, in contrast to most model predictions which suggest an overall repulsive interaction. This measurement allows for the first time an estimation of the 68% confidence level interval for the isospin I=0 inverse scattering length of the ND¯ state f0,I=0−1∈[−0.4,0.9] fm−1, assuming negligible interaction for the isospin I=1 channel.

关键词： Hadron colliders

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A rear-end collision risk assessment model based on drivers’ collision avoidance process under influences of cell phone use and gender—A driving simulator based study

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Accident Analysis and Prevention 2016年 97卷 1-18页

作者： Li, Xiaomeng Yan, Xuedong Wu, Jiawei Radwan, Essam Zhang, Yuting MOE Key Laboratory for Urban Transportation Complex System Theory and Technology School of Traffic and Transportation Beijing Jiaotong University Beijing100044 China Center for Advanced Transportation System Simulation Department of Civil Environment Construction Engineering University of Central Florida OrlandoFL United States

Driver's collision avoidance performance has a direct link to the collision risk and crash severity. Previous studies demonstrated that the distracted driving, such as using a cell phone while driving, disrupted the driver's performance on road. This study aimed to investigate the manner and extent to which cell phone use and driver's gender affected driving performance and collision risk in a rear-end collision avoidance process. Forty-two licensed drivers completed the driving simulation experiment in three phone use conditions: no phone use, hands-free, and hand-held, in which the drivers drove in a car-following situation with potential rear-end collision risks caused by the leading vehicle's sudden deceleration. Based on the experiment data, a rear-end collision risk assessment model was developed to assess the influence of cell phone use and driver's gender. The cell phone use and driver's gender were found to be significant factors that affected the braking performances in the rear-end collision avoidance process, including the brake reaction time, the deceleration adjusting time and the maximum deceleration rate. The minimum headway distance between the leading vehicle and the simulator during the rear-end collision avoidance process was the final output variable, which could be used to measure the rear-end collision risk and judge whether a collision occurred. The results showed that although cell phone use drivers took some compensatory behaviors in the collision avoidance process to reduce the mental workload, the collision risk in cell phone use conditions was still higher than that without the phone use. More importantly, the results proved that the hands-free condition did not eliminate the safety problem associated with distracted driving because it impaired the driving performance in the same way as much as the use of hand-held phones. In addition, the gender effect indicated that although female drivers had longer reaction time than male drivers in

关键词： Collision avoidance

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Profiling and analysis of object lazy allocation in Java programs

Profiling and analysis of object lazy allocation in Java pro...

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ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing (SNPD)

作者： Jianjun Shi Weixing Ji Lulu Zhang Yujin Gao Han Zhang Duzheng Qing School of Computer Science Beijing Institute of Technology Beijing China Science and Technology on Special System Simulation Laboratory Beijing Simulation Center Beijing China

Lazy allocation strategy allows the memory management system to defer the space allocation action of objects until they are being accessed. This paper investigates the potential benefits of a lazy allocator for Java applications. A heap tracing tool is implemented by instrumenting an existing Java virtual machine HotSpot, which records useful object manipulating events at runtime. By profiling and analyzing a large number of benchmarks, we show the potential dynamic memory management optimization opportunity in Java programs. We also designed a simulation system to demonstrate the actual effects of a lazy allocator.

关键词： Resource management Java Benchmark testing Memory management Virtual machining Color Runtime

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