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Thermal Adaptive Models in Built Environment and Its Energy Implications in Eastern China

Energy Procedia 2015年 75卷 1413-1418页

作者： Liu Yang Wuxing Zheng Yan Mao Joseph C. Lam Yongchao Zhai School of Architecture Xi’an University of Architecture and Technology Xi’an 710055 China Henan Polytechnic University Jiaozuo 454000 China Building Energy Research Group Department of Civil and Architectural Engineering City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong Special Administrative Region Center for the Built Environment University of California Berkeley CA 94720 USA

Field investigations and testing on thermal comfort were conducted in Eastern China including 8 representative cities of 4 climate zones of severe cold, cold, hot summer and cold winter, hot summer and warm winter etc. Both subjective questionnaire survey in terms of thermal sensation vote (TSV) and objective on-site measurements were carried out. Clothing levels during summer and winter in 4 climate zones were obtained, and correlations between clothing insulation against operative temperature and outdoor temperature were found, different adaptive models of climate and comfort indoors were developed as well. The energy savings for cooling of indoor design temperature (with and without adaptive model) were calculated in Beijing, Shanghai and Guangzhou, and the total percentage of saving is about 5%, 6.5% and 8%, respectively.

关键词： Thermal comfort adaptive model energy implications Eastern China

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Dynamics of the Roman arches of burnum using the non-smooth contact dynamics method

Dynamics of the Roman arches of burnum using the non-smooth ...

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作者： Lancioni, G. Lenci, S. Quagliarini, E. Department of Civil and Building Engineering and Architecture Polytechnic University of Marche Ancona Italy

The LMGC90 code is a discrete element numerical code, which implements the non-smooth contact dynamics method. In this paper, it was applied to the study of the dynamics of the roman arches of Burnum, in Croatia, with two main objectives: (i) to assess the stability of the two preserved arches against seismic events, and (ii) to investigate the causes of the collapse of the major arch, originally adjacent to the two actual arches, which occurred in the seventeenth century. An earthquake and a very strong wind ("bora" wind), as hypothesized by historical sources, have been considered as the two most probable failure causes. © Civil-Comp Press, 2014.

关键词： Dynamics

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Smart management of electric vehicles charging operations: The vehicle-to-charging station assignment problem 19

Smart management of electric vehicles charging operations: T...

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19th IFAC World Congress on International Federation of Automatic Control, IFAC 2014

作者： Clemente, M. Fanti, M.P. Ukovich, W. Department of Engineering and Architecture University of Trieste Trieste34127 Italy Department of Electrical and Information Engineering Polytechnic of Bari Bari70126 Italy

ISBN: (纸本)9783902823625

The widespread diffusion of Electric Vehicles (EVs) gives a concrete answer to the growing environmental problems linked to the mobility in urban areas. This paper deals with a particular management problem related to the EVs charging operations: the integration of the EVs with the power distribution system. Possible electrical grid disruptions due to uncoordinated charging operations and the need of guaranteeing to drivers a certain level of confidence while travelling with an EV explain the efforts in the identification of a smart approach for the EVs charging management problem. In this work, a hierarchical mathematical programming approach is considered and a system made up of two interdependent optimization models is introduced in order to identify the optimum spatial and temporal scheduling of EVs charging operations in an urban area served by several charging stations. Moreover, a Mixed Integer Linear Programming (MILP) formulation for the Vehicle-to-Charging Station Assignment Problem is proposed and a preliminary example of application is presented. © IFAC.

关键词： Vehicle-to-grid

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The effects mechanism analysis of excavation on existing adjacent metro of sandy pebble in ultra-deep foundation

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Electronic Journal of Geotechnical engineering 2014年第Z7期19卷 19085-19095页

作者： Hu, Qijun Wang, Ping Long, Zhiwei Zhang, Yun Yang, Xiaoqiang School of Civil Engineering and Architecture Southwest Petroleum University China Department of Road and Bridge Engineering Gui Zhou Polytechnic College of Communications China School of Foreign Languages Southwest Petroleum University China

In order to study the effects mechanism analysis of excavation on existing adjacent metro of sandy pebble in super deep foundation, the effects of excavation on the subway was analyzed based on the special geological conditions of sandy pebble stratum. In the case of meet its own stability of the foundation pit, the subway structure will present a certain degree of rise with the excavation of foundation pit. What's more, The nearer the the foundation pit to the edge, the more evident is the phenomenon is. With the increase of underground buried depth, the vertical displacement will gradually decrease. The effect of pile diameter on adjacent subway is great, the smaller the pile diameter, the greater the vertical displacement of the subway. So does to the pile spacing effects on neighboring subway, with the increases of pile spacing, the vertical displacement of the subway becomes greater. © 2014 ejge.

关键词： Subways

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Evaluation on Retrofit of One Existing Residential Building in North China: Energy Saving, Environmental and Economic Benefits

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Procedia engineering 2015年 121卷 3-10页

作者： Shuqin Chen Jun Guan Mark D. Levine Li Haiying P. Yowargana College of Civil Engineering and Architecture Zhejiang University Hangzhou China Norwegian University of Science and Technology Department of Energy and Process Engineering Trondheim Norway Lawrence Berkeley National Lab Berkeley California USA College of Metallurgy and Energy Hebei Polytechnic University Tangshan China Azure international Technology & Development (Beijing) Limited. Beijing 100027 China

Energy efficiency retrofit of residential buildings, widely carried out in north China, has been aroused a great concern during recent years. In this case, one typical residential building with energy efficiency retrofit was selected in Tangshan as a case study. Indoor thermal environment and space heating use of the building were measured before and after the retrofit. A methodology is developed to evaluate the energy-saving, environmental and economic benefits for the retrofit. Results show the full-scale retrofit in this building can meet the 50% energy saving target set by the government. Indoor thermal environment achieved a good improvement after the full-scale retrofit as well. The results could be a reference of evaluation and optimization of energy efficiency retrofit schemes of residential buildings in north China.

关键词： Benefit evaluation Energy efficiency Retrofit Residential building North China

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Search for Physics beyond the Standard Model in Events with Overlapping Photons and Jets

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Physical Review Letters 2019年第24期123卷 241801-241801页

作者： A. M. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. Bergauer J. Brandstetter M. Dragicevic J. Erö A. Escalante Del Valle M. Flechl R. Frühwirth M. Jeitler N. Krammer I. Krätschmer D. Liko T. Madlener I. Mikulec N. Rad J. Schieck R. Schöfbeck M. Spanring D. Spitzbart W. Waltenberger C.-E. Wulz M. Zarucki V. Drugakov V. Mossolov J. Suarez Gonzalez M. R. Darwish E. A. De Wolf D. Di Croce X. Janssen J. Lauwers A. Lelek M. Pieters H. Rejeb Sfar H. Van Haevermaet P. Van Mechelen S. Van Putte N. Van Remortel F. Blekman E. S. Bols S. S. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi S. Lowette I. Marchesini S. Moortgat L. Moreels Q. Python K. Skovpen S. Tavernier W. Van Doninck P. Van Mulders I. Van Parijs D. Beghin B. Bilin H. Brun B. Clerbaux G. De Lentdecker H. Delannoy B. Dorney L. Favart A. Grebenyuk A. K. Kalsi J. Luetic A. Popov N. Postiau E. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom Q. Wang T. Cornelis D. Dobur I. Khvastunov C. Roskas D. Trocino M. Tytgat W. Verbeke B. Vermassen M. Vit N. Zaganidis O. Bondu G. Bruno C. Caputo P. David C. Delaere M. Delcourt A. Giammanco V. Lemaitre A. Magitteri J. Prisciandaro A. Saggio M. Vidal Marono P. Vischia J. Zobec F. L. Alves G. A. Alves G. Correia Silva C. Hensel A. Moraes P. Rebello Teles E. Belchior Batista Das Chagas W. Carvalho J. Chinellato E. Coelho E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao C. De Oliveira Martins S. Fonseca De Souza L. M. Huertas Guativa H. Malbouisson J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima W. L. Prado Da Silva L. J. Sanchez Rosas A. Santoro A. Sznajder M. Thiel E. J. Tonelli Manganote F. Torres Da Silva De Araujo A. Vilela Pereira S. Ahuja C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. M. Gregores D. S. Lemos P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev A. Marinov M. Misheva M. Rodozov M. Shopova G. Sultanov M. Bonchev A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov W. Fang X. Gao L. Yuan M. Ah Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium The University of Kansas Lawrence Kansas USA 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 São Paulo Brazil 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 National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA 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 National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Université Paris-Saclay Gif-sur-Yvette France Laboratoire Le

Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with hadrons. The analyzed proton-proton collision data were collected by the CMS experiment at the LHC, in 2016 at s=13 TeV, and correspond to an integrated luminosity of 35.9 fb−1. The spectra of total transverse hadronic energy of candidate events are examined for deviations from the standard model predictions. No statistically significant excess is observed over the expected background. The first cross section limits on new physics processes resulting in such events are set. The results are interpreted as upper limits on the rate of gluino pair production, utilizing a simplified stealth supersymmetry model. The excluded gluino masses extend up to 1.7 TeV, for a neutralino mass of 200 GeV and exceed previous mass constraints set by analyses targeting events with isolated photons.

关键词： Quark & gluon jets Hypothetical particles Photons Superpartners Hadron colliders

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Observation of Two Excited Bc+ States and Measurement of the Bc+(2S) Mass in pp Collisions at s=13 TeV

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Physical Review Letters 2019年第13期122卷 132001-132001页

作者： A. M. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. Bergauer J. Brandstetter M. Dragicevic J. Erö A. Escalante Del Valle M. Flechl R. Frühwirth M. Jeitler N. Krammer I. Krätschmer D. Liko T. Madlener I. Mikulec N. Rad J. Schieck R. Schöfbeck M. Spanring D. Spitzbart W. Waltenberger J. Wittmann C.-E. Wulz M. Zarucki V. Drugakov V. Mossolov J. Suarez Gonzalez M. R. Darwish E. A. De Wolf D. Di Croce X. Janssen J. Lauwers A. Lelek M. Pieters H. Van Haevermaet P. Van Mechelen N. Van Remortel F. Blekman E. S. Bols S. S. Chhibra J. D’Hondt J. De Clercq G. Flouris D. Lontkovskyi S. Lowette I. Marchesini S. Moortgat L. Moreels Q. Python K. Skovpen S. Tavernier W. Van Doninck P. Van Mulders I. Van Parijs D. Beghin B. Bilin H. Brun B. Clerbaux G. De Lentdecker H. Delannoy B. Dorney L. Favart A. Grebenyuk A. K. Kalsi J. Luetic A. Popov N. Postiau E. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom Q. Wang T. Cornelis D. Dobur A. Fagot M. Gul I. Khvastunov C. Roskas D. Trocino M. Tytgat W. Verbeke B. Vermassen M. Vit N. Zaganidis O. Bondu G. Bruno C. Caputo P. David C. Delaere M. Delcourt A. Giammanco G. Krintiras V. Lemaitre A. Magitteri K. Piotrzkowski J. Prisciandaro A. Saggio M. Vidal Marono P. Vischia J. Zobec F. L. Alves G. A. Alves G. Correia Silva C. Hensel A. Moraes P. Rebello Teles E. Belchior Batista Das Chagas W. Carvalho J. Chinellato E. Coelho E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza L. M. Huertas Guativa H. Malbouisson D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima L. J. Sanchez Rosas A. Santoro A. Sznajder M. Thiel E. J. Tonelli Manganote F. Torres Da Silva De Araujo A. Vilela Pereira S. Ahuja C. A. Bernardes L. Calligaris D. De Souza Lemos T. R. Fernandez Perez Tomei E. M. Gregores P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov R. Hadjiiska P. Iaydjiev A. Marinov M. Misheva M. Rodozov M. Shopova G. Sultanov A. Dimitrov L. Litov B. Pavlov P. Petkov W. Fang X. Gao L. Yuan M. Ahmad G. M. Chen H. S. Chen M. Chen C. H. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium The University of Kansas Lawrence Kansas USA 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 São Paulo Brazil 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 National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China University of Virginia Charlottesville Virginia USA 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 National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Université Paris-Saclay Gif-sur-Yvette France Laboratoire Leprince-Ringuet Ecole polytechnique

Signals consistent with the Bc+(2S) and Bc*+(2S) states are observed in proton-proton collisions at s=13 TeV, in an event sample corresponding to an integrated luminosity of 143 fb−1, collected by the CMS experiment during the 2015–2018 LHC running periods. These excited b¯c states are observed in the Bc+π+π− invariant mass spectrum, with the ground state Bc+ reconstructed through its decay to J/ψπ+. The two states are reconstructed as two well-resolved peaks, separated in mass by 29.1±1.5(stat)±0.7(syst) MeV. The observation of two peaks, rather than one, is established with a significance exceeding five standard deviations. The mass of the Bc+(2S) meson is measured to be 6871.0±1.2(stat)±0.8(syst)±0.8(Bc+) MeV, where the last term corresponds to the uncertainty in the world-average Bc+ mass.

关键词： Particle production Bottom quark Mesons Hadron colliders

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Search for a Light Charged Higgs Boson Decaying to a W Boson and a CP-Odd Higgs Boson in Final States with eμμ or μμμ in Proton-Proton Collisions at s=13 TeV

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Physical Review Letters 2019年第13期123卷 131802-131802页

作者： A. M. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. Bergauer J. Brandstetter M. Dragicevic J. Erö A. Escalante Del Valle M. Flechl R. Frühwirth M. Jeitler N. Krammer I. Krätschmer D. Liko T. Madlener I. Mikulec N. Rad J. Schieck R. Schöfbeck M. Spanring D. Spitzbart W. Waltenberger J. Wittmann C.-E. Wulz M. Zarucki V. Drugakov V. Mossolov J. Suarez Gonzalez M. R. Darwish E. A. De Wolf D. Di Croce X. Janssen J. Lauwers A. Lelek M. Pieters H. Van Haevermaet P. Van Mechelen S. Van Putte N. Van Remortel F. Blekman E. S. Bols S. S. Chhibra J. D’Hondt J. De Clercq G. Flouris D. Lontkovskyi S. Lowette I. Marchesini S. Moortgat L. Moreels Q. Python K. Skovpen S. Tavernier W. Van Doninck P. Van Mulders I. Van Parijs D. Beghin B. Bilin H. Brun B. Clerbaux G. De Lentdecker H. Delannoy B. Dorney L. Favart A. Grebenyuk A. K. Kalsi J. Luetic A. Popov N. Postiau E. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom Q. Wang T. Cornelis D. Dobur I. Khvastunov C. Roskas D. Trocino M. Tytgat W. Verbeke B. Vermassen M. Vit N. Zaganidis O. Bondu G. Bruno C. Caputo P. David C. Delaere M. Delcourt A. Giammanco G. Krintiras V. Lemaitre A. Magitteri K. Piotrzkowski J. Prisciandaro A. Saggio M. Vidal Marono P. Vischia J. Zobec F. L. Alves G. A. Alves G. Correia Silva C. Hensel A. Moraes P. Rebello Teles E. Belchior Batista Das Chagas W. Carvalho J. Chinellato E. Coelho E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao C. De Oliveira Martins S. Fonseca De Souza L. M. Huertas Guativa H. Malbouisson J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima W. L. Prado Da Silva L. J. Sanchez Rosas A. Santoro A. Sznajder M. Thiel E. J. Tonelli Manganote F. Torres Da Silva De Araujo A. Vilela Pereira S. Ahuja C. A. Bernardes L. Calligaris D. De Souza Lemos 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 A. Marinov M. Misheva M. Rodozov M. Shopova G. Sultanov A. Dimitrov L. Litov B. Pavlov P. Petkov W. Fa Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium The University of Kansas Lawrence Kansas USA 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 São Paulo Brazil 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 National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China University of Virginia Charlottesville Virginia USA 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 National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Université Paris-Saclay Gif-sur-Yvette France Laboratoire Leprince-Ringuet Ecole polytechnique

A search for a light charged Higgs boson (H+) decaying to a W boson and a CP-odd Higgs boson (A) in final states with eμμ or μμμ is performed using data from pp collisions at s=13 TeV, recorded by the CMS detector at the LHC and corresponding to an integrated luminosity of 35.9 fb−1. In this search, it is assumed that the H+ boson is produced in decays of top quarks, and the A boson decays to two oppositely charged muons. The presence of signals for H+ boson masses between 100 and 160 GeV and A boson masses between 15 and 75 GeV is investigated. No evidence for the production of the H+ boson is found. Upper limits at 95% confidence level are obtained on the combined branching fraction for the decay chain, t→bH+→bW+A→bW+μ+μ−, of 1.9×10−6 to 8.6×10−6, depending on the masses of the H+ and A bosons. These are the first limits for these decay modes of the H+ and A bosons.

关键词： Higgs bosons Hypothetical gauge bosons Top quark Hadron colliders

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Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at s=13 TeV

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Physical Review Letters 2019年第23期123卷 231803-231803页

作者： A. M. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. Bergauer J. Brandstetter M. Dragicevic J. Erö A. Escalante Del Valle M. Flechl R. Frühwirth M. Jeitler N. Krammer I. Krätschmer D. Liko T. Madlener I. Mikulec N. Rad J. Schieck R. Schöfbeck M. Spanring D. Spitzbart W. Waltenberger J. Wittmann C.-E. Wulz M. Zarucki V. Drugakov V. Mossolov J. Suarez Gonzalez M. R. Darwish E. A. De Wolf D. Di Croce X. Janssen J. Lauwers A. Lelek M. Pieters H. Van Haevermaet P. Van Mechelen S. Van Putte N. Van Remortel F. Blekman E. S. Bols S. S. Chhibra J. D’Hondt J. De Clercq G. Flouris D. Lontkovskyi S. Lowette I. Marchesini S. Moortgat L. Moreels Q. Python K. Skovpen S. Tavernier W. Van Doninck P. Van Mulders I. Van Parijs D. Beghin B. Bilin H. Brun B. Clerbaux G. De Lentdecker H. Delannoy B. Dorney L. Favart A. Grebenyuk A. K. Kalsi J. Luetic A. Popov N. Postiau E. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom Q. Wang T. Cornelis D. Dobur I. Khvastunov C. Roskas D. Trocino M. Tytgat W. Verbeke B. Vermassen M. Vit N. Zaganidis O. Bondu G. Bruno C. Caputo P. David C. Delaere M. Delcourt A. Giammanco G. Krintiras V. Lemaitre A. Magitteri K. Piotrzkowski J. Prisciandaro A. Saggio M. Vidal Marono P. Vischia J. Zobec F. L. Alves G. A. Alves G. Correia Silva C. Hensel A. Moraes P. Rebello Teles E. Belchior Batista Das Chagas W. Carvalho J. Chinellato E. Coelho E. M. Da Costa G. G. Da Silveira D. De Jesus Damiao C. De Oliveira Martins S. Fonseca De Souza L. M. Huertas Guativa H. Malbouisson J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima W. L. Prado Da Silva L. J. Sanchez Rosas A. Santoro A. Sznajder M. Thiel E. J. Tonelli Manganote F. Torres Da Silva De Araujo A. Vilela Pereira S. Ahuja C. A. Bernardes L. Calligaris D. De Souza Lemos 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 A. Marinov M. Misheva M. Rodozov M. Shopova G. Sultanov A. Dimitrov L. Litov B. Pavlov P. Petkov W. Fa Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium The University of Kansas Lawrence Kansas USA 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 São Paulo Brazil 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 National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China University of Virginia Charlottesville Virginia USA 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 National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Université Paris-Saclay Gif-sur-Yvette France Laboratoire Leprince-Ringuet Ecole polytechnique

A search for narrow low-mass resonances decaying to quark-antiquark pairs is presented. The search is based on proton-proton collision events collected at 13 TeV by the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 35.9 fb−1, recorded in 2016. The search considers the case where the resonance has high transverse momentum due to initial-state radiation of a hard photon. To study this process, the decay products of the resonance are reconstructed as a single large-radius jet with two-pronged substructure. The signal would be identified as a localized excess in the jet invariant mass spectrum. No evidence for such a resonance is observed in the mass range 10 to 125 GeV. Upper limits at the 95% confidence level are set on the coupling strength of resonances decaying to quark pairs. The results obtained with this photon trigger strategy provide the first direct constraints on quark-antiquark resonance masses below 50 GeV obtained at a hadron collider.

关键词： Quark & gluon jets Hypothetical gauge bosons Photons Hadron colliders

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Comparative experimental evaluation of dust sensors for environmental monitoring on construction sites 31

Comparative experimental evaluation of dust sensors for envi...

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31st International Symposium on Automation and Robotics in Construction and Mining, ISARC 2014

作者： Carbonari, A. Fava, G. Naticchia, B. Department of Civil Building Engineering and Architecture Polytechnic University of Marche Ancona Italy Department of Materials Environmental Sciences and Urban Planning Polytechnic University of Marche Ancona Italy

ISBN: (纸本)9780646597119

Fine particle emissions (PM10) from demolition and construction activities are now recognized as significant causes of pollution. So they can cause health hazards both to workers and to people living and working outside the site's boundary in the local neighbourhood. Although admissible concentration values are defined by national legislation and regulations worldwide, there is no permanent monitoring system in place, yet. Hence, in this paper one step pertaining to the development of a wireless pervasive and real-time monitoring system of dust concentration will be presented. In particular, it will focus on the types of sensors, integrated in the communication network, which can be used to the purpose. In particular, we will compare the performances of two different dust sensors. On principle, they are all suitable for wireless monitoring, but not all the sensors have the same sensitivity to changeable particles diameter sizes and types of dust. So a dedicated laboratory campaign was carried out, in order to compare their performances with the ones of a reference instrument (used as a benchmark). The comparisons show that there is a good agreement between the plots of the wireless real-time tracking system and the benchmark. However, the reliability of the sensors to detect events (e.g. sudden dust concentration variation) and particles with non-uniform particle distribution is different according to the kind of dust sensor which is integrated in the wireless system.

关键词： Dust

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