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Observation of e+e?→D+sDˉˉˉˉ(?)0K?e+e?→Ds+Dˉ(?)0K?and study of the P-wave DsDs mesons
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作者 麦迪娜 M.N.Achasov +143 位作者 S.Ahmed M.Albrecht M.Alekseev A.Amoroso 安芬芬 安琪 白羽 O.Bakina R.Baldini Ferroli 班勇 K.Begzsuren D.W.Bennett J.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi I.Boyko R.A.Briere 蔡浩 蔡啸 A.Calcaterra 曹国富 S.A.Cetin J.Chai 常劲帆 W.L.Chang G.Chelkov 陈刚 陈和生 陈江川 陈玛丽 陈申见 陈元柏 成伟帅 G.Cibinetto F.Cossio 代洪亮 代建平 A.Dbeyssi D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis F.De Mori 丁勇 董超 董静 董燎原 董明义 豆正磊 杜书先 范荆州 方建 房双世 方易 R.Farinelli L.Fava F.Feldbauer G.Felici 封常青 M.Fritsch 傅成栋 付颖 高清 高鑫磊 高原宁 高勇贵 高榛 B.Garillon I.Garzia A.Gilman K.Goetzen 龚丽 龚文煊 W.Gradl M.Greco 谷立民 顾旻皓 顾珊 顾运厅 郭爱强 郭立波 郭如盼 郭玉萍 A.Guskov Z.Haddadi 韩爽 郝喜庆 F.A.Harris 何康林 F.H.Heinsius T.Held 衡月昆 侯治龙 胡海明 胡继峰 胡涛 胡誉 黄光顺 黄金书 黄性涛 黄晓忠 黄智玲 N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad 纪全 姬清平 季晓斌 季筱璐 姜侯兵 江晓山 蒋兴雨 焦健斌 焦铮 金大鹏 金山 金毅 T.Johansson N.Kalantar-Nayestanaki 康晓珅 M.Kavatsyuk 柯百谦 I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth W.Kühn J.S.Lange P.Larin L. 《中国物理C:英文版》 SCIE CAS CSCD 2019年第3期5-16,共12页
Studies of e+e?→D+sDˉˉˉˉ(?)0K?e+e?→Ds+Dˉ(?)0K?and the PP-wave charmed-strange mesons are performed based on an e+e?e+e?collision data sample corresponding to an integrated luminosity of 567 pb?1 collected with ... Studies of e+e?→D+sDˉˉˉˉ(?)0K?e+e?→Ds+Dˉ(?)0K?and the PP-wave charmed-strange mesons are performed based on an e+e?e+e?collision data sample corresponding to an integrated luminosity of 567 pb?1 collected with the BESIII detector at s√=4.600s=4.600 GeV.The processes of e+e?→D+sDˉˉˉˉ?0K?e+e?→Ds+Dˉ?0K?and D+sDˉˉˉˉ0K?Ds+Dˉ0K?are observed for the first time and are found to be dominated by the modes D+sDs1(2536)?Ds+Ds1(2536)?and D+sD?s2(2573)?Ds+Ds2?(2573)?,respectively.The Born cross sections are measured to beσB(e+e?→D+sDˉˉˉˉ?0K?)=(10.1±2.3±0.8)σB(e+e?→Ds+Dˉ?0K?)=(10.1±2.3±0.8)pb andσB(e+e?→D+sDˉˉˉˉ0K?)=(19.4±2.3±1.6)σB(e+e?→Ds+Dˉ0K?)=(19.4±2.3±1.6)pb,and the products of Born cross section and the decay branching fraction are measured to beσB(e+e?→D+sDs1(2536)?+c.c.)?σB(e+e?→Ds+Ds1(2536)?+c.c.)?B(Ds1(2536)?→Dˉˉˉˉ?0K?)=(7.5±1.8±0.7)B(Ds1(2536)?→Dˉ?0K?)=(7.5±1.8±0.7)pb andσB(e+e?→D+sD?s2(2573)?+c.c.)?B(D?s2(2573)?→Dˉˉˉˉ0K?)=σB(e+e?→Ds+Ds2?(2573)?+c.c.)?B(Ds2?(2573)?→Dˉ0K?)=(19.7±2.9±2.0)(19.7±2.9±2.0)pb.For the Ds1(2536)?Ds1(2536)?and D?s2(2573)?Ds2?(2573)?mesons,the masses and widths are measured to be M(Ds1(2536)?)=(2537.7±0.5±3.1)MeV/c2M(Ds1(2536)?)=(2537.7±0.5±3.1)MeV/c2,Γ(Ds1(2536)?)=(1.7±1.2±0.6)Γ(Ds1(2536)?)=(1.7±1.2±0.6)MeV,and M(D?s2(2573)?)=M(Ds2?(2573)?)=(2570.7±2.0±1.7)MeV/c2,(2570.7±2.0±1.7)MeV/c2,Γ(D?s2(2573)?)=(17.2±3.6±1.1)Γ(Ds2?(2573)?)=(17.2±3.6±1.1)MeV.The spin-parity of the D?s2(2573)?Ds2?(2573)?meson is determined to be JP=2+JP=2+.In addition,the processes e+e?→D+sDˉˉˉˉ(?)0K?e+e?→Ds+Dˉ(?)0K?are searched for using the data samples taken at four(two)center-of-mass energies between 4.416(4.527)and 4.575 GeV,and upper limits at the 90%confidence level on the cross sections are determined. 展开更多
关键词 cross section P-WAVE D_s MESONS resonance parameters spin-parity BESIII
Accretion in strong field gravity with eXTP
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作者 Alessandra De Rosa Phil Uttley +99 位作者 LiJun Gou Yuan Liu Cosimo Bambi Didier Barret Tomaso Belloni Emanuele Berti Stefano Bianchi Ilaria Caiazzo Piergiorgio Casella Marco Feroci Valeria Ferrari Leonardo Gualtieri Jeremy Heyl Adam Ingram Vladimir Karas FangJun Lu Bin Luo Giorgio Matt Sara Motta Joseph Neilsen Paolo Pani Andrea Santangelo XinWen Shu JunFeng Wang Jian-Min Wang YongQuan Xue YuPeng Xu WeiMin Yuan YeFei Yuan Shuang-Nan Zhang Shu Zhang Ivan Agudo Lorenzo Amati Nils Andersson Cristina Baglio Pavel Bakala Altan Baykal Sudip Bhattacharyya Ignazio Bombaci Niccoló Bucciantini Fiamma Capitanio Riccardo Ciolfi Wei K. Cui Filippo D'Ammando Thomas Dauser Melania Del Santo Barbara De Marco Tiziana Di Salvo Chris Done Michal Dovvciak Andrew C. Fabian Maurizio Falanga Angelo Francesco Gambino Bruce Gendre Victoria Grinberg Alexander Heger Jeroen Homan Rosario Iaria JiaChen Jiang ChiChuan Jin Elmar Koerding Manu Linares Zhu Liu Thomas J. Maccarone Julien Malzac Antonios Manousakis Frédéric Marin Andrea Marinucci Missagh Mehdipour Mariano Méndez Simone Migliari Cole Miller Giovanni Miniutti Emanuele Nardini Paul T. O'Brien Julian P. Osborne Pierre Olivier Petrucci Andrea Possenti Alessandro Riggio Jerome Rodriguez Andrea Sanna LiJing Shao Malgosia Sobolewska Eva Sramkova Abigail L. Stevens Holger Stiele Giulia Stratta Zdenek Stuchlik Jiri Svoboda Fabrizio Tamburini Thomas M. Tauris Francesco Tombesi Gabriel Torok Martin Urbanec Frederic Vincent QingWen Wu Feng Yuan Jean J. M. in 't Zand Andrzej A. Zdziarski XinLin Zhou 《中国科学:物理学、力学、天文学英文版》 SCIE EI CAS CSCD 2019年第2期45-73,共29页
In this paper we describe the potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies related to accretion flows in the strong field gravity regime around both stellar-mass and supermassive b... In this paper we describe the potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies related to accretion flows in the strong field gravity regime around both stellar-mass and supermassive black-holes. eXTP has the unique capability of using advanced “spectral-timing-polarimetry” techniques to analyze the rapid variations with three orthogonal diagnostics of the flow and its geometry, yielding unprecedented insight into the inner accreting regions, the effects of strong field gravity on the material within them and the powerful outflows which are driven by the accretion process. 展开更多
关键词 X-RAY BLACK HOLES PHYSICS ACCRETION
Observatory science with eXTP
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作者 Jean J. M. in 't Zand Enrico Bozzo +103 位作者 JinLu Qu Xiang-Dong Li Lorenzo Amati Yang Chen Immacolata Donnarumma Victor Doroshenko Stephen A. Drake Margarita Hernanz Peter A. Jenke Thomas J. Maccarone Simin Mahmoodifar Domitilla de Martino Alessandra De Rosa Elena M. Rossi Antonia Rowlinson Gloria Sala Giulia Stratta Thomas M. Tauris Joern Wilms XueFeng Wu Ping Zhou Iván Agudo Diego Altamirano Jean-Luc Atteia Nils A. Andersson M. Cristina Baglio David R. Ballantyne Altan Baykal Ehud Behar Tomaso Belloni Sudip Bhattacharyya Stefano Bianchi Anna Bilous Pere Blay Jo ao Braga S?ren Brandt Edward F. Brown Niccolò Bucciantini Luciano Burderi Edward M. Cackett Riccardo Campana Sergio Campana Piergiorgio Casella Yuri Cavecchi Frank Chambers Liang Chen Yu-Peng Chen Jérome Chenevez Maria Chernyakova ChiChuan Jin Riccardo Ciolfi Elisa Costantini Andrew Cumming Antonino D'Aì Zi-Gao Dai Filippo D'Ammando Massimiliano De Pasquale Nathalie Degenaar Melania Del Santo Valerio D'Elia Tiziana Di Salvo Gerry Doyle Maurizio Falanga XiLong Fan Robert D. Ferdman Marco Feroci Federico Fraschetti Duncan K. Galloway Angelo F. Gambino Poshak Gandhi MingYu Ge Bruce Gendre Ramandeep Gill Diego Gotz Christian Gouiffès Paola Grandi Jonathan Granot Manuel Güdel Alexander Heger Craig O. Heinke Jeroen Homan Rosario Iaria Kazushi Iwasawa Luca Izzo Long Ji Peter G. Jonker Jordi José Jelle S. Kaastra Emrah Kalemci Oleg Kargaltsev Nobuyuki Kawai Laurens Keek Stefanie Komossa Ingo Kreykenbohm Lucien Kuiper Devaky Kunneriath Gang Li En-Wei Liang Manuel Linares Francesco Longo FangJun Lu Alexander A. Lutovinov Denys Malyshev Julien Malza 《中国科学:物理学、力学、天文学英文版》 SCIE EI CAS CSCD 2019年第2期97-138,共42页
In this White Paper we present the potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies related toObservatory Science targets. These include flaring stars, supernova remnants, accreting wh... In this White Paper we present the potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies related toObservatory Science targets. These include flaring stars, supernova remnants, accreting white dwarfs, low and high mass X-raybinaries, radio quiet and radio loud active galactic nuclei, tidal disruption events, and gamma-ray bursts. eXTP will be excellentlysuited to study one common aspect of these objects: their often transient nature. Developed by an international Consortium ledby the Institute of High Energy Physics of the Chinese Academy of Science, the eXTP mission is expected to be launched in themid 2020s. 展开更多
关键词 space research instruments nuclear ASTROPHYSICS flare stars ACCRETION and ACCRETION disks mass loss and stellar winds cataclysmic BINARIES X-RAY BINARIES supernova REMNANTS active galactic nuclei X-RAY BURSTS gamma-ray BURSTS gravitational waves
Evidence for the decays of ∧c^+→∑^+η and ∑^+η’
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作者 麦迪娜 M.N.Achasov +146 位作者 S.Ahmed M.Albrecht M.Aleksee A.Amoroso 安芬芬 安琪 白羽 O.Bakina R. Baldini Ferroli 班勇 K.Begzsuren D.W.Bennett J.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi I.Boyko R.A.Briere 蔡浩 蔡啸 O.Cakir A.Calcaterra 曹国富 S.A.Cetin J.Chai 常劲帆 W.L.Chang G.Chelkov 陈刚 陈和生 陈江川 陈玛丽 陈平亮 陈申见 陈元柏 成伟帅 G.Cibinetto F.Cossio 代洪亮 代建平 A.Dbeyssi D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis F.De Mori 丁勇 董超 董静 董燎原 董明义 豆正磊 杜书先 段鹏飞 范荆州 方建 房双世 方易 R.Farinelli L.Fava S.Fegan F.Feldbauer G.Felici 封常青 M.Fritsch 傅成栋 付颖 高清 高鑫磊 高原宁 高勇贵 高榛 B.Garillon I.Garzia A.Gilman K.Goetzen 龚丽 龚文煊 W.Gradl M.Greco 谷立民 顾旻皓 顾运厅 郭爱强 郭立波 郭如盼 郭玉萍 A.Guskov Z.Haddadi 韩爽 郝喜庆 F.A.Harris 何康林 F.H.Heinsius T.Held 衡月昆 侯治龙 胡海明 胡继峰 胡涛 胡誉 黄光顺 黄金书 黄性涛 黄晓忠 黄智玲 T.Hussain N.Hu sken W.Ikegami Andersson M.Irshad 纪全 姬清平 季晓斌 季筱璐 江晓山 蒋兴雨 焦健斌 焦铮 金大鹏 金山 金毅 T.Johansson A.Julin N.Kalantar-Nayestanaki 康晓珅 M.Kavatsyuk 柯百谦 I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kornicer M.Kuemmel M.Kuessner A.Kupsc M.Kurth W.Kuhn J.S.Lange P.Larin L.La 《中国物理C:英文版》 SCIE CAS CSCD 2019年第8期15-23,共9页
We study the hadronic decays of ∧c^+ to the final states ∑^+η and ∑^+η, using an e^+e^- annihilation data sample of 567 pb^-1 taken at a center-of-mass energy of 4.6 GeV with the BESIII detector at the BEPCII col... We study the hadronic decays of ∧c^+ to the final states ∑^+η and ∑^+η, using an e^+e^- annihilation data sample of 567 pb^-1 taken at a center-of-mass energy of 4.6 GeV with the BESIII detector at the BEPCII collider. We find evidence for the decays ∧^+→∑^+η and ∑^+η' and with statistical significance of and , respectively. Normalizing to the reference decays ∧^+→∑^+π^0 and ∑^+ω, we obtain the ratios of the branching fractions B(∧C^+→∑^+η)/V(∧^→∑^+π^0)and B(∧C^+→∑^+η)/B(∧C^+→∑^+ω)to be and , respectively. The upper limits at the 90% confidence level are set to be B(∧C^→∑^+η)/V(∧^+→∑^+π^0)<0.58 and B(∧C^+→∑^+η)/B(∧C^+→∑^+ω)<1.2. Using BESIII measurements of the branching fractions of the reference decays, we determine B(∧C^+→∑^+η)=(0.41±019±0.05)%(<0.68%) and B(∧C^+→∑^+η)=(1.34+0.53+0.19)%(<1.9%). Here, the first uncertainties are statistical and the second systematic. The obtained branching fraction of ∧C^+→∑^+η is consistent with the previous measurement, and the branching fraction of ∧C^+→∑^+η is measured for the first time. 展开更多
关键词 charmed BARYON ∧c^+ DECAYS branching FRACTIONS
Aberrant Resting-State Functional Connectivity in the Default Mode Network in Pediatric Bipolar Disorder Patients with and without Psychotic Symptoms
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作者 Yuan Zhong Chun Wang +5 位作者 Weijia Gao Qian Xiao Dali Lu Qing Jiao Linyan Su Guangming Lu 《神经科学通报:英文版》 SCIE CAS CSCD 2019年第4期581-590,共10页
Mood disorders/psychosis have been associated with dysfunctions in the default mode network(DMN).However,the relative contributions of DMN regions to state and trait disturbances in pediatric bipolar disorder(PBD)rema... Mood disorders/psychosis have been associated with dysfunctions in the default mode network(DMN).However,the relative contributions of DMN regions to state and trait disturbances in pediatric bipolar disorder(PBD)remain unclear.The aim of this study was to investigate the possible mechanisms of PBD through brain imaging and explore the influence of psychotic symptoms on functional alterations in PBD patients.Twenty-nine psychotic and 26 non-psychotic PBD patients,as well as 19 age-and sex-matched healthy controls underwent a restingstate functional MRI scan and the data were analyzed by independent component analysis.The DMN component from the fMRI data was extracted for each participant.Spearman's rank correlation analysis was performed between aberrant connectivity and clinical measurements.The results demonstrated that psychotic PBD was characterized by aberrant DMN connectivity in the anterior cingulate cortex/medial prefrontal cortex,bilateral caudate nucleus,bilateral angular gyri,and left middle temporal gyrus,while non-psychotic PBD was not,suggesting further impairment with the development of psychosis.In summary,we demonstrated unique impairment in DMN functional connectivity in the psychotic PBD group.These specific neuroanatomical abnormalities may shed light on the underlying pathophysiology and presentation of PBD. 展开更多
关键词 Pediatric bipolar disorder DEFAULT mode RESTING-STATE fMRI Functional CONNECTIVITY PSYCHOTIC SYMPTOM
Aphasia rehabilitation based on mirror neuron theory:a randomized-block-design study of neuropsychology and functional magnetic resonance imaging 预览
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作者 Wen-Li Chen Qian Ye +5 位作者 Si-Cong Zhang Yang Xia Xi Yang Ti-Fei Yuan Chun-Lei Shan Jian-An Li 《中国神经再生研究:英文版》 SCIE CAS CSCD 2019年第6期1004-1012,共9页
When watching someone performs an action,mirror neurons are activated in a way that is very similar to the activation that occurs when actually performing that action.Previous single-sample case studies indicate that ... When watching someone performs an action,mirror neurons are activated in a way that is very similar to the activation that occurs when actually performing that action.Previous single-sample case studies indicate that hand-action observation training may lead to activation and remodeling of mirror neuron systems,which include important language centers,and may improve language function in aphasia patients.In this randomized-block-design experiment,we recruited 24 aphasia patients from,Zhongda Hospital,Southeast University,China.The patients were divided into three groups where they underwent hand-action observation and repetition,dynamic-object observation and repetition,or conventional speech therapy.Training took place 5 days per week,35 minutes per day,for 2 weeks.We assessed language function via picture naming tests for objects and actions and the Western Aphasia Battery.Among the participants,one patient,his wife and four healthy student volunteers underwent functional magnetic resonance imaging to analyze changes in brain activation during hand-action observation and dynamic-object observation.Results demonstrated that,compared with dynamic-object observation,hand-action observation led to greater performance with respect to the aphasia quotient and affiliated naming sub-tests and a greater Western Aphasia Battery test score.The overall effect was similar to that of conventional aphasia training,yet hand-action observation had advantages compared with conventional training in terms of vocabulary extraction and spontaneous speech.Thus,hand-action observation appears to more strongly activate the mirror neuron system compared with dynamic-object observation.The activated areas included Broca’s area,Wernicke’s area,and the supramarginal gyrus.These results suggest that hand-action observation combined with repetition might better improve language function in aphasia patients compared with dynamic-object observation combined with repetition.The therapeutic mechanism of this intervention may be associated wi 展开更多
关键词 nerve REGENERATION mirror NEURON hand-action observation APHASIA REHABILITATION stroke functional magnetic resonance imaging NEUROPSYCHOLOGY neural REGENERATION
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LKLR: A Local Tangent Space-Alignment Kernel Least-Squares Regression Algorithm
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作者 Chao Tan Genlin Ji 《清华大学学报自然科学版(英文版)》 EI CAS CSCD 2019年第4期389-399,共11页
In the fields of machine learning and data mining, label learning is a nascent area of research, and within this paradigm, there is much room for improving multi-label manifold learning algorithms for high-dimensional... In the fields of machine learning and data mining, label learning is a nascent area of research, and within this paradigm, there is much room for improving multi-label manifold learning algorithms for high-dimensional data. Thus far, researchers have experimented with mapping relationships from the feature space to the traditional logical label space(using neighbors in the label space, for example, to predict logical label vectors from the feature space’s manifold structure). Here we combine the feature manifold’s and label space’s local topological structures to reconstruct the label manifold. To achieve this, we use a nonlinear manifold learning algorithm to transform the local topological structure from the feature space to the label space. Our algorithm adopts a regularized leastsquares kernel method to realize the reconstruction process, employing an optimization function to find the best solution. Extensive experiments show that our algorithm significantly improves multi-label manifold learning in terms of learning accuracy and time complexity. 展开更多
关键词 MULTI-LABEL MANIFOLD learning local topological structure REGULARIZED least SQUARES KERNEL method
Combined gully profiles for expressing surface morphology and evolution of gully landforms
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作者 Jingwei LI Liyang XIONG Guo’an TANG 《地球科学前沿:英文版》 SCIE CAS CSCD 2019年第3期551-562,共12页
The expression of gully landforms can be regarded as an indicator of the evolutionary process of gullies. Most existing studies on the expression of gully landforms focus on plane characteristics. However, the vertica... The expression of gully landforms can be regarded as an indicator of the evolutionary process of gullies. Most existing studies on the expression of gully landforms focus on plane characteristics. However, the vertical characteristics of a gully should be given considerable attention because gullies have mainly eroded the surface in the vertical direction. Current studies on vertical characteristics of gullies mainly focused on a single gully or rarely a few gullies, thereby failing to express the entire gully landform in a certain area. In this study, gully profile combination (GPC) was proposed to investigate the morphology and reveal the evolution of gully landforms. It was defined as the combination of vertical projection of all gully profiles in the entire drainage basin. Then, a gully evolution index and its statistic values were used to reveal the evolution of gully landforms based on GPC. The proposed method was applied and validated in three typical loess gully landform areas (i.e., loess tableland, ridge, and hill) in the Loess Plateau of China. Results show that GPC can effectively express gully landforms. The specific geomorphological feature (monoclinic loess tableland) can also be identified using GPC. The gully evolution index results also demonstrate different magnitudes of gully evolutionary stages in a certain area, which reflect the diversity of gullies. The average and median values of the gully evolution index increase in the three typical loess gully landforms. From loess tableland, loess ridge, and loess hill, the average values are 0.653, 0.703, and 0.763, and the median values are 0.661, 0.719, and 0.783, respectively. This method is also found to be stable with gully extraction thresholds for distinguishing different loess gully land-forms. Accordingly, the evolution magnitudes of loess gully are obtained. 展开更多
关键词 GULLY profile combination GULLY EVOLUTION GULLY morphology LOESS LANDFORM
Energy Efficiency and Spectrum Efficiency in Underlay Device-to-Device Communications Enabled Cellular Networks 预览
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作者 Yan Cai Yiyang Ni +2 位作者 Jun Zhang Su Zhao Hongbo Zhu 《中国通信:英文版》 SCIE CSCD 2019年第4期16-34,共19页
In this paper,we investigate the energy efficiency and spectrum efficiency,including one-hop device-to-device(D2D)communications mode and two-way amplify-and-forward(AF)relaying D2D communications mode in underlay D2D... In this paper,we investigate the energy efficiency and spectrum efficiency,including one-hop device-to-device(D2D)communications mode and two-way amplify-and-forward(AF)relaying D2D communications mode in underlay D2D communications enabled cellular networks.An analysis of average energy efficiency and spectrum efficiency are developed and closed-form expressions are obtained for two types of D2D communications modes under the effect of Rayleigh fading channel,path loss,and co-channel interference.Analytical results are validated through numerical simulations.Based on the simulation,the effects of the interference,the distance between D2D pair and the position of relay node on the energy efficiency and spectrum efficiency of D2D communications are investigated.The optimal D2D transmission powers of these two modes to maximize the energy efficiency are also investigated. 展开更多
关键词 D2D COMMUNICATIONS energyefficiency SPECTRUM efficiency two-way AMPLIFY-AND-FORWARD RELAYING PROTOCOL
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Internal incentives and operations strategies for the watersaving supply chain with cap-and-trade regulation
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作者 Zhisong CHEN Li FANG Huimin WANG 《工程管理前沿:英文版》 2019年第1期87-101,共15页
Faced with the rapid development of modem industries of agriculture, manufacturing, and services, water resources are becoming increasingly scarce. Industries with high water consumption are generally regulated by the... Faced with the rapid development of modem industries of agriculture, manufacturing, and services, water resources are becoming increasingly scarce. Industries with high water consumption are generally regulated by the government's water cap-and-trade (CAT) regulation to solve the contradiction between the limited water supply and the rapid growing water demand. Supply chain equilibrium and coordination models under the benchmark scenario without water saving and CAT regulation, watersaving supply chain equilibrium and coordination models under the scenario without/with CAT regulation are developed, analyzed and compared. The corresponding numerical and sensitivity analyses for all models are conducted and compared, and the managerial insights and policy recommendations are summarized in this article. The results indicate that (1) Conducting water saving could improve effectively the operational performance of the water-saving supply chain under the scenario without/with CAT regulation.(2) The coordination strategy based on the revenue sharing contract could efficiently coordinate the water-saving supply chain, enhance water consumption reduction rate, and improve the operational performance of the water-saving supply chain.(3) The implementation of CAT regulation enhances effectively water-consumptio reduction in the water-saving supply chain and improves the operational performance of water-saving supply chain.(4) Simultaneous implementation of CAT regulation by the government and adopting coordination strategy by the water-saving supply chain would be superior to any other scenarios/strategies.(5) A suitable water cap based on the industrial average water consumption and historical water consumption data are beneficial for constructing reasonable and effective incentive mechanism.(6) A higher marginal trade price could induce more reduction in water consumption and create better operational performance for the manufacturer and water-saving supply chain, both under the equilibrium and coordination strategies. 展开更多
关键词 WATER-SAVING supply chain equilibrium coordination INTERNAL INCENTIVE cap and trade REGULATION
A Note on Strong Edge Coloring of Sparse Graphs
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作者 Wei DONG Rui LI Bao Gang XU 《数学学报:英文版》 SCIE CSCD 2019年第4期577-582,共6页
A strong edge coloring of a graph is a proper edge coloring where the edges at distance at most 2 receive distinct colors. The strong chromatic index χs^′(G) of a graph G is the minimum number of colors used in a st... A strong edge coloring of a graph is a proper edge coloring where the edges at distance at most 2 receive distinct colors. The strong chromatic index χs^′(G) of a graph G is the minimum number of colors used in a strong edge coloring of G. In an ordering Q of the vertices of G, the back degree of a vertex x of G in Q is the number of vertices adjacent to x, each of which has smaller index than x in Q. Let G be a graph of maximum degree Δ and maximum average degree at most 2 k. Yang and Zhu [J. Graph Theory, 83, 334–339(2016)] presented an algorithm that produces an ordering of the edges of G in which each edge has back degree at most 4 kΔ-2 k in the square of the line graph of G, implying that χs^′(G)≤ 4 kΔ-2 k + 1. In this note, we improve the algorithm of Yang and Zhu by introducing a new procedure dealing with local structures. Our algorithm generates an ordering of the edges of G in which each edge has back degree at most(4 k-1)Δ-2 k in the square of the line graph of G, implying that χs^′(G)≤(4 k-1)Δ-2 k + 1. 展开更多
关键词 STRONG edge COLORING maximum AVERAGE degree SPARSE GRAPH
Hypocrellin A-based photodynamic action induces apoptosis in A549 cells through ROS-mediated mitochondrial signaling pathway
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作者 Shanshan Qi Lingyuan Guo +3 位作者 Shuzhen Yan Robert J.Lee Shuqin Yu Shuanglin Chen 《药学学报:英文版》 CSCD 2019年第2期279-293,共15页
Over recent decades, many studies have reported that hypocrellin A(HA) can eliminate cancer cells with proper irradiation in several cancer cell lines. However, the precise molecular mechanism underlying its anticance... Over recent decades, many studies have reported that hypocrellin A(HA) can eliminate cancer cells with proper irradiation in several cancer cell lines. However, the precise molecular mechanism underlying its anticancer effect has not been fully defined. HA-mediated cytotoxicity and apoptosis in human lung adenocarcinoma A549 cells were evaluated after photodynamic therapy(PDT). A temporal quantitative proteomics approach by isobaric tag for relative and absolute quantitation(iTRAQ) 2 D liquid chromatography with tandem mass spectrometric(LC–MS/MS) was introduced to help clarify molecular cytotoxic mechanisms and identify candidate targets of HA-induced apoptotic cell death. Specific caspaseinhibitors were used to further elucidate the molecular pathway underlying apoptosis in PDT-treated A549 cells. Finally, down-stream apoptosis-related protein was evaluated. Apoptosis induced by HA was associated with cell shrinkage, externalization of cell membrane phosphatidylserine, DNA fragmentation,and mitochondrial disruption, which were preceded by increased intracellular reactive oxygen species(ROS) generations. Further studies showed that PDT treatment with 0.08 mmol/L HA resulted in mitochondrial disruption, pronounced release of cytochrome c, and activation of caspase-3,-9, and-7.Together, HA may be a possible therapeutic agent directed toward mitochondria and a promising photodynamic anticancer candidate for further evaluation. 展开更多
关键词 HYPOCRELLIN A Photodynamic therapy REACTIVE oxygen species PROTEOMIC LC–MS/MS ITRAQ
Quantum electrodynamics experiments with colliding petawatt laser pulses
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作者 I.C.E.Turcu B.Shen +8 位作者 D.Neely G.Sarri K.A.Tanaka P.McKenna S.P.D.Mangles T.-P.Yu W.Luo X.-L.Zhu Y.Yin 《高功率激光科学与工程:英文版》 CAS CSCD 2019年第1期74-81,共8页
A new generation of high power laser facilities will provide laser pulses with extremely high powers of 10 petawatt(PW)and even 100 PW,capable of reaching intensities of 10^23 W/cm^2 in the laser focus.These ultra-hig... A new generation of high power laser facilities will provide laser pulses with extremely high powers of 10 petawatt(PW)and even 100 PW,capable of reaching intensities of 10^23 W/cm^2 in the laser focus.These ultra-high intensities are nevertheless lower than the Schwinger intensity Is=2.3×10^29 W/cm^2 at which the theory of quantum electrodynamics(QED)predicts that a large part of the energy of the laser photons will be transformed to hard Gamma-ray photons and even to matter,via electron-positron pair production.To enable the investigation of this physics at the intensities achievable with the next generation of high power laser facilities,an approach involving the interaction of two colliding PW laser pulses is being adopted.Theoretical simulations predict strong QED effects with colliding laser pulses of≥10 PW focused to intensities≥10^22 W/cm^2. 展开更多
关键词 colliding PETAWATT LASER pulses electron-positron pairs creation nonlinear Breit-Wheeler process PETAWATT LASER facilities quantum ELECTRODYNAMICS
Predictability of Ensemble Forecasting Estimated Using the Kullback–Leibler Divergence in the Lorenz Model 预览
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作者 Ruiqiang DING Baojia LIU +2 位作者 Bin GU Jianping LI Xuan LI 《大气科学进展:英文版》 SCIE CAS CSCD 2019年第8期837-846,共10页
A new method to quantify the predictability limit of ensemble forecasting is presented using the Kullback–Leibler(KL)divergence(also called the relative entropy), which provides a measure of the difference between th... A new method to quantify the predictability limit of ensemble forecasting is presented using the Kullback–Leibler(KL)divergence(also called the relative entropy), which provides a measure of the difference between the probability distributions of ensemble forecasts and local reference(true) states. The KL divergence is applicable to a non-normal distribution of ensemble forecasts, which is a substantial improvement over the previous method using the ensemble spread. An example from the three-variable Lorenz model illustrates the effectiveness of the KL divergence, which can effectively quantify the predictability limit of ensemble forecasting. On this basis, the KL divergence is used to investigate the dependence of the predictability limit of ensemble forecasting on the initial states and the magnitude of initial errors. The local predictability limit of ensemble forecasting varies considerably with the initial states, as well as with the magnitude of initial errors. Further research is needed to examine the real-world applications of the KL divergence in measuring the predictability of ensemble weather forecasts. 展开更多
关键词 PREDICTABILITY ENSEMBLE forecasting Kullback–Leibler DIVERGENCE
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Application of a 3D-printed “fistula stent” in plugging enteroatmospheric fistula with open abdomen: A case report 预览
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作者 Zi-Yan Xu Hua-Jian Ren +2 位作者 Jin-Jian Huang Zong-An Li Jian-An Ren 《世界胃肠病学杂志:英文版》 SCIE CAS 2019年第14期1775-1782,共8页
BACKGROUND Open abdomen (OA) has been generally accepted for its magnificent superiority and effectiveness in patients with severe trauma, severe intra-abdominal infection, and abdominal compartment syndrome. In the m... BACKGROUND Open abdomen (OA) has been generally accepted for its magnificent superiority and effectiveness in patients with severe trauma, severe intra-abdominal infection, and abdominal compartment syndrome. In the meantime, OA calls for a mass of nursing and the subsequent enteroatomospheric fistula (EAF), which is one of the most common complications of OA therapy, remains a thorny challenge. CASE SUMMARY Our team applied thermoplastic polyurethane as a befitting material for producing a 3D-printed “fistula stent” in the management of an EAF patient, who was initially admitted to local hospital because of abdominal pain and distension and diagnosed with bowel obstruction. After a series of operations and OA therapy, the patient developed an EAF. CONCLUSION Application of this novel “fistula stent” resulted in a drastic reduction in the amount of lost enteric effluent and greatly accelerated rehabilitation processes. 展开更多
关键词 3D PRINTING Enteroatmospheric FISTULA Open ABDOMEN ISOLATION technique Case report
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Probing the QCD phase structure with higher order baryon numbersusceptibilities within the NJL model
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作者 范文凯 罗晓峰 宗红石 《中国物理C:英文版》 SCIE CAS CSCD 2019年第3期37-42,共6页
Conserved charge fluctuations can be used to probe the phase structure of strongly interacting nuclear matter in relativistic heavy-ion collisions. To obtain the characteristic signatures of the conserved charge fluct... Conserved charge fluctuations can be used to probe the phase structure of strongly interacting nuclear matter in relativistic heavy-ion collisions. To obtain the characteristic signatures of the conserved charge fluctuations for the quantum chromodynamics(QCD) phase transition, we study the susceptibilities of dense quark matter up to eighth order in detail, using an effective QCD-based model. We studied two cases, one with the QCD critical end point(CEP) and one without owing to an additional vector interaction term. The higher order susceptibilities display rich structures near the CEP and show sign changes as well as large fluctuations. These can provide us information about the presence and location of the CEP. Furthermore, we find that the case without the CEP also shows a similar sign change pattern, but with a relatively smaller magnitude compared with the case with the CEP. Finally, we conclude that higher order susceptibilities of conserved charge can be used to probe the QCD phase structures in heavyion collisions. 展开更多
关键词 QCD critical point NJL model HEAVY-ION collisions BARYON number FLUCTUATIONS
Second to tenth order susceptibilities of conserved charges within a modified Nambu-Jona-Lasinio model
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作者 范文凯 罗晓峰 宗红石 《中国物理C:英文版》 SCIE CAS CSCD 2019年第5期99-106,共8页
We discuss the sign and energy dependence of second to tenth order susceptibilities of the baryon number,charge number, and strangeness for the analysis of critical conditions in heavy ion collisions in the LHC and RH... We discuss the sign and energy dependence of second to tenth order susceptibilities of the baryon number,charge number, and strangeness for the analysis of critical conditions in heavy ion collisions in the LHC and RHIC by applying a modified Nambu-Jona-Lasinio model. This model is fitted to the quark condensate of the lattice QCD result at finite temperature and zero baryon chemical potential. The presence of a critical point made these susceptibilities deviate considerably from a Hadron-Resonance-Gas model that shows no criticality. The sign, magnitude, and energy dependence of these higher order fluctuations hint towards the existence and location of a critical point that could be discovered in future heavy ion collision experiments. 展开更多
关键词 QCD CRITICAL point NJL model HEAVY-ION COLLISIONS QCD phase DIAGRAM
Aggregation-amplified circularly polarized luminescence from axial chiral boron difluoride complexes
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作者 Zhiyong Jiang Xiaoqing Wang +1 位作者 Jianping Ma Zhipeng Liu 《中国科学:化学英文版》 SCIE EI CAS CSCD 2019年第3期355-362,共8页
The development of small organic molecules with intense and switchable circularly polarized luminescence(CPL) is currently attracting great interest due to their promising applications in chiroptical devices and senso... The development of small organic molecules with intense and switchable circularly polarized luminescence(CPL) is currently attracting great interest due to their promising applications in chiroptical devices and sensors. In this paper, CPL-active BF2-bridged azaanthracene dimers(BA1 and BA2) were facilely synthesized by incorporating boron difluoride unit to the binaphthalene. BA1 and BA2 show moderate CPL in diluted solutions, however, BA2 exhibited aggregation-amplified red CPL with large dissymmetry factor up to 1.6×10^-2. Moreover, acid-/base-triggered CPL switch off/on were also realized via disaggregation/aggregation of BA2 in tetrahydrofuran(THF)/water binary solvents. 展开更多
关键词 aggregation-induced emission BODIPY circularly polarized luminescence DYES and PIGMENTS switch
Sedimentary Evolution and Transgressions of the Western Subei Basin in Eastern China since the Late Pliocene 预览
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作者 CHENG Yu LI Xiangqian +6 位作者 SHU Junwu BAI Shibiao ZHAO Zengyu ZHANG Xiangyun GUO Gang ZHANG Ping LIN Jingxing 《地质学报:英文版》 SCIE CAS CSCD 2019年第1期155-166,共12页
Sedimentary sequences in the Subei Basin are complex and have been affected by interactions between the ocean and rivers since the Late Pliocene,including the Yellow River,Huaihe River,and the Yangtze River.This sedim... Sedimentary sequences in the Subei Basin are complex and have been affected by interactions between the ocean and rivers since the Late Pliocene,including the Yellow River,Huaihe River,and the Yangtze River.This sedimentary evolution,in particular the timing of Pleistocene transgressions,has long been a matter of controversy owing to the lack of precise chronological evidence.The aim of this study is to explore the evolution of the sedimentary environment throughout the past 3.00?Ma in this region on the basis of a comprehensive analysis of particle size and foraminifera and ostracods collected in the TZK9 core from the Subei Basin combined with geochronological studies of magnetostratigraphy,AMS14C and optically stimulated luminescence(OSL).The results show that fluvial facies in the sedimentary environment from 3.00 to 1.01?Ma.There were fluvial facies and reflects six sea-level high stands from 1.01 to 0.25?Ma.The study area was affected by four large-scale transgressions since 0.25?Ma.The four marine sedimentary layers known as DU7(buried at 48–52?m),DU5(buried at 35–41?m),DU3(buried at 16–23?m),and DU1(buried at 2–4?m)are recorded in the MIS7(210–250?ka),MIS5,MIS3,and Holocene,respectively.The magnitude of the DU5 transgression was identical to that of the DU3 transgression,both were larger than the DU7 transgression,and the DU1 transgression was the weakest.The variation of transgression strength reflects the influence of global changes in sea level,tectonic subsidence,shell ridges,and sand dams.In the TZK9 core,we found evidence of seven sea-level high stands from the Early–Middle Pleistocene,and the first one caused by regional rapid subsidence and could be traced back to 0.83-0.84 Ma.The sea-level high stands and the age of the first one recorded above was different from other cores in eastern China,this was caused by the lack of absolute age control and the differences in paleotopography during this period.This study reconstructs sedimentary evolution,determines the transgression and its age 展开更多
关键词 FORAMINIFERA and OSTRACODS SEA-LEVEL change TRANSGRESSION Subei Basin
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土地利用视角下的城市空间多维扩展研究——以南京市为例(英文)
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作者 QIAO Weifeng GAO Junbo +3 位作者 GUO Yuanzhi JI Qingqing WU Ju CAO Min 《地理学报:英文版》 SCIE CSCD 2019年第5期749-761,共13页
The study of multi-dimensional expansion of urban space(MEUS) addresses the laws of urban spatial expansion from all directions and angles. Using Nanjing as an example,this paper constructs multi-temporal, urban three... The study of multi-dimensional expansion of urban space(MEUS) addresses the laws of urban spatial expansion from all directions and angles. Using Nanjing as an example,this paper constructs multi-temporal, urban three-dimensional models based on RS and GIS technology and then conducts qualitative and quantitative analysis of MEUS using plot ratio change maps and MEUS quantitative index for built-up areas. Based especially on the concept of volume growth contribution rate, this paper analyzes the characteristics of MEUS in different stages. The results show that in 2000–2004, planar expansion played the main role,the internal potential development(IPD) intensity of the urban built-up areas was relatively large, and the volume growth contribution rate was low;in 2004–2008, planar expansion accelerated, and IPD slowed down;in 2008–2012, planar expansion slowed while IPD intensity increased;the contribution rates of volume growth of urban IPD for the three periods were 22.21%, 24.51% and 73.38%, respectively. This study expands the research perspective of urban spatial expansion, and the adopted methods are instructive and meaningful for MEUS research. In addition, the results of this study will deepen the understanding of MEUS laws and help improve scientific decision-making for urban planning and urban land use management. 展开更多
关键词 urban land use PLOT RATIO change map MULTI-DIMENSIONAL EXPANSION volume growth CONTRIBUTION rate NANJING
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