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2015 International Conference on Information systems: Exploring the Information Frontier, ICIS 2015

作者： Chung, Wingyan He, Saike Zeng, Daniel Institute for Simulation and Training University of Central Florida OrlandoFL United States State Key Laboratory of Management and Control for Complex Systems Chinese Academy of Sciences Beijing China Eller College of Management University of Arizona TucsonAZ United States Chinese Academy of Sciences Beijing China

ISBN: (纸本)9780996683111

Social media enable users to express their emotion promptly, helping health policy makers to gauge public sentiment of disease outbreak. In this research, we developed an approach to social-media-based public health informatics and built a proof-of-concept system named eMood that helps to collect, analyze, and visualize Ebola outbreak discussions on Twitter. Our approach uses a comprehensive lexicon to identify emotion categories and present analysis findings of users' network relationship and influence patterns. We compared two methods of identifying user influence, user centrality and emotion entrainment, by using 255,118 tweets posted by 210,900 users in January 2015. Experimental results show that both methods identified highly influential users. Regression analysis of user influence rank and emotion scores demonstrates significant relationship between user influence and each emotion category. These results should provide strong implication for understanding social actions and for collecting social intelligence for public health informatics.

关键词： Sentiment analysis

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Insurance Strategy Can Promote Cooperation in the Presence of Antisocial Punishment in Public Goods Game

Insurance Strategy Can Promote Cooperation in the Presence o...

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International Conference on Identification, Information and Knowledge in the Internet of Things (IIKI)

作者： Hong Ding Yao Zhang Haiyang Hu Lei Shu Yizhi Ren Key Laboratory of Complex Systems Modeling and Simulation Ministry of Education Hangzhou Dianzi University Hangzhou China School of Computer Science and Technology Hangzhou Dianzi University Hangzhou China Guangdong Petrochemical Equipment Fault Diagnosis Key Laboratory Guangdong University of Petrochemical Technology Maoming China

Previous researches have well demonstrated the importance of costly punishment for promoting the evolution of cooperation, while it remains unconsidered sides about the punishment. Recent evidences highlight that punishment cannot promote cooperation when punishment can be targeted at cooperators. In this paper, we study the evolutionary process of cooperation in the well-mixed population when the presence of antisocial punishment. Here cooperator can optionally adopt an insurance strategy which incurs an extra cost to resist the threat of antisocial punishment, and she will obtain compensation when being punished by antisocial punisher in the future. With this strategy, cooperators can opportunistically adjust their behavior, which makes cooperators evolve advantageously, and improve individuals' average payoff in population.

关键词： Sociology Statistics Insurance Integrated circuits Games Resists Investment

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Message from the Chairs

Proceedings - 2015 IEEE/ACM 19th International Symposium on ...

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Proceedings - 2015 IEEE/ACM 19th International Symposium on Distributed simulation and Real Time Applications, DS-RT 2015 2015年 ix-x页

作者： Turner, Stephen J. Yao, Yiping You, Guangrong Li, Bohu Cai, Wentong Nanyang Technological University Singapore National University of Defense Technology China National Key Laboratory for Complex Systems Simulation China BeiHang University China

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A Travel Time Prediction Method for Urban Road Traffic Sensors Data

A Travel Time Prediction Method for Urban Road Traffic Senso...

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International Conference on Identification, Information and Knowledge in the Internet of Things (IIKI)

作者： Guangyu Zhu Kang Song Peng Zhang Ministry of Education Key Laboratory of System Control and Information Processing Shanghai China MOE Key Laboratory for Transportation Complex Systems- Theory and Technology Beijing Jiaotong University Beijing China Beijing Municipality Key Laboratory of Urban Traffic Operation Simulation and Decision Support Beijing China

Travel time parameters obtained from road traffic sensors data play an important role in traffic management practice. In this paper, a travel time analysis and prediction model was established for urban road traffic sensors data based on the change point analysis algorithm and ARIMA model. Firstly, time series of travel time parameters were clustered by using change point mining algorithm after traffic sensors data preprocessing. Then, a travel time prediction model was established based on ARIMA model. Finally, the model was verified with high accuracy through simulation by using multiple sets of data and analysis of its practicability was done.

关键词： Predictive models Data models Roads Time series analysis Detectors Analytical models

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Reputation-Based Conditional Investment Enhances the Evolution of Cooperation in Spatial Public Goods Game

Reputation-Based Conditional Investment Enhances the Evoluti...

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International Conference on Identification, Information and Knowledge in the Internet of Things (IIKI)

作者： Hong Ding Lin Cao Hongjun Qiu Zhangbing Zhou Lei Shu Yizhi Ren Key Laboratory of Complex Systems Modeling and Simulation Ministry of Education China Hangzhou Dianzi University Hangzhou China School of Computer Science and Technologv Hangzhou Dianzi University Hangzhou China School of Information Engineering China University of Geosciences Beijing China Guangdong Petrochemical Equipment Fault Diagnosis Key Laboratory Guangdong University of Petrochemical Technology Maoming China

Most previous studies involving public goods games are investigated under a simplifying assumption that participators are compulsive in collective interactions and contribute unconditionally to the public pool. Nevertheless, how the conditional investment mechanism based on individual's reputation affects the evolution of cooperation in structured populations is still unclear. Here we introduce a reputation-based conditional investment rule for constituting participant groups into spatial threshold public goods game, where the public goods game can be conducted only if the participant number is not less than the threshold parameter. Interestingly, we find that large threshold parameter results in the optimal environment for cooperators' viability.

关键词： Games Investment Sociology Statistics Lattices Evolution (biology) Fault diagnosis

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Further study of the NΩ dibaryon within constituent quark models

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Physical Review C 2015年第6期92卷 065202-065202页

作者： Hongxia Huang Jialun Ping Fan Wang Department of Physics and Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems Nanjing Normal University Nanjing 210023 People's Republic of China Department of Physics Nanjing University Nanjing 210093 People's Republic of China

Inspired by the discovery of the dibaryon d* and the experimental search of NΩ dibaryon with the STAR data, we study the strange dibaryon NΩ further in the framework of the quark delocalization color screening model and the chiral quark model. We have shown NΩ is a narrow resonance in ΛΞ D-wave scattering before. However, the Λ−Ξ scattering data analysis is quite complicated. Here we calculate the low-energy NΩ scattering phase shifts, scattering length, effective range, and binding energy to provide another approach of STAR data analysis. Our results show there exists an NΩ “bound” state, which can be observed by the N−Ω correlation analysis with RHIC and LHC data, or by the new developed automatic scanning system at J-PARC. In addition, we also find that the hidden-color channel coupling is important for the NΩ system to develop intermediate-range attraction.

关键词： DIBARYON QUARK models PHASE shift (Nuclear physics) QUANTUM chromodynamics QUARK-gluon plasma

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Effect of angular momentum conservation on hydrodynamic simulations of colloids

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Physical Review E 2015年第1期92卷 013301-013301页

作者： Mingcheng Yang Mario Theers Jinglei Hu Gerhard Gompper Roland G. Winkler Marisol Ripoll Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China Theoretical Soft-Matter and Biophysics Institute of Complex Systems Forschungszentrum Jülich 52425 Jülich Germany Theoretical Soft-Matter and Biophysics Institute for Advanced Simulation Forschungszentrum Jülich 52425 Jülich Germany

In contrast to most real fluids, angular momentum is not a locally conserved quantity in some mesoscopic simulation methods. Here we quantify the importance of this conservation in the flow fields associated with different colloidal systems. The flow field is analytically calculated with and without angular momentum conservation for the multiparticle collision dynamics (MPC) method, and simulations are performed to verify the predictions. The flow field generated around a colloidal particle moving under an external force with slip boundary conditions depends on the conservation of angular momentum, and the amplitude of the friction force is substantially affected. Interestingly, no dependence on the angular momentum conservation is found for the flow fields generated around colloids under the influence of phoretic forces. Moreover, circular Couette flow between a no-slip and a slip cylinder is investigated, which allows us to validate one of the two existing expressions for the MPC stress tensor.

关键词： COLLOIDS HYDRODYNAMICS -- Mathematical models CONSERVATION of angular momentum BOUNDARY value problems COUETTE flow MOLECULAR collisions

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Spontaneous PT-symmetry breaking in non-Hermitian Kitaev and extended Kitaev models

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Physical Review A 2015年第1期92卷 012116-012116页

作者： Xiaohui Wang Tingting Liu Ye Xiong Peiqing Tong Department of Physics and Institute of Theoretical Physics Nanjing Normal University Nanjing 210023 People's Republic of China Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems Nanjing Normal University Nanjing 210023 People's Republic of China and Kavli Institute for Theoretical Physics China CAS Beijing 100190 People's Republic of China

The spontaneous parity-time (PT) symmetry breaking is discussed in non-Hermitian PT-symmetric Kitaev and extended Kitaev models whose Hermiticity is broken by the presence of two conjugated imaginary potentials ±iγ at two end sites. In the case of the non-Hermitian Kitaev model, a spontaneous PT-symmetry breaking transition (SPTBT) occurs at a certain γc in the topologically trivial phase (TTP) region, similar to that of the Su-Schrieffer-Heeger (SSH) model. However, unlike the SSH model, the system also undergoes such a transition in the topologically nontrivial phase (TNP) region. We study an extended Kitaev model by combining the superconducting pairing in the Kitaev model and the staggered hopping in the SSH model. This model contains three different topological phases: the TTP, the Kitaev-like TNP, and the SSH-like TNP. For the non-Hermitian extended Kitaev model, a SPTBT occurs in the Kitaev-like TNP region, as well as in part of the TTP and SSH-like TNP regions, whereas the PT symmetry is broken for an arbitrary nonzero γ in the rest of the TTP and SSH-like TNP regions. Therefore, we can conclude that there is no universal correlation between topological properties and the SPTBT.

关键词： TANTALUM compounds QUADRUPOLE moments ELECTRON-nucleus scattering HYPERFINE structure QUANTUM chromodynamics

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Work done and irreversible entropy production in a suddenly quenched quantum spin chain with asymmetrical excitation spectra

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Physical Review E 2015年第3期91卷 032137-032137页

作者： Ming Zhong Peiqing Tong Department of Physics and Institute of Theoretical Physics Nanjing Normal University Nanjing 210023 People's Republic of China Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems Nanjing Normal University Nanjing 210023 People's Republic of China and Kavli Institute for Theoretical Physics China CAS Beijing 100190 People's Republic of China

In this paper, we extend the studies on the emergent thermodynamics in a quenched quantum Ising chain (QIC) [R. Dorner, J. Goold, C. Cormick, M. Paternostro, and V. Vedral, Phys. Rev. Lett. 109, 160601 (2012)] to a more general quantum spin chain with asymmetrical excitation spectra. We verify that the Jarzynski and Tasaki-Crooks relations are still tenable in this system. As an example, we discuss the behaviors of the work done and irreversible entropy production induced by a sudden quenching in the anisotropic XY chain in a transverse field with the XZY-YZX type of three-site interactions. Different from the QIC, this system has the phase transitions not only between two gapped phases, but also between gapped (or gapless) and gapless phases at zero temperature. We discuss the effects of quantum phase transitions on the work done and irreversible entropy production at low temperature.

关键词： ISING model THERMODYNAMICS QUANTUM systems QUANTUM phase transitions LOW temperature physics

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The two-body hadronic decays of B_c meson in the perturbative QCD approach:a short review

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Chinese Science Bulletin 2014年第29期59卷 3748-3759页

作者： Zhen-Jun Xiao Xin Liu Department of Physics and Institute of Theoretical Physics Nanjing Normal University Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems Nanjing Normal University School of Physics and Electronic Engineering Jiangsu Normal University

Along with the running of Large Hadron Collider(LHC)located at CERN in November 2009,a large number of data samples of Bc meson have been collected and some hadronic Bc decay modes have been measured by the LHC *** view of the special and important roles of Bc meson decays playing in the heavy flavor sector,we here give a short review on the status of two body hadronic decays Bc!M1M2at both experimental and theoretical *** the theoretical progresses,specifically,we will show lots of theoretical studies on two body hadronic Bcdecays involving pseudoscalar,vector,scalar,axial-vector,even tensor meson(s)in the final states by employing the perturbative QCD(pQCD)factorization *** will present a general analysis about the twobody hadronic decays of the heavy Bc meson and also provide some expectations for the future developments.

关键词：微扰QCD 强子衰变介子评论欧洲核子研究中心大型强子对撞机实验测量衰减模式

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