摘要：
Social media data are used to enhance crisis management, as people widely adopt social media to share and acquire information to cope with uncertainties in crises. Identification and extraction of informative communications out of large volumes of data is critical for accurate situational awareness and timely response. Existing studies use conditions of geolocations, keywords, and topics separately or jointly to retrieve data that can be crisis related, but are not enough to filter subsets of data for different crisis management tasks. We propose that the crisis communication purposes of users can be detected to enhance data selection and prioritization for different crisis management tasks. A classification framework was built to identify three facets of a message: content type, audience type, and information source. The definitions of these categories are not dependent on a specific type of crises. So the classification framework can be potentially applied to different crisis scenarios. Machine learning models were created for the automatic classification of messages. Results showed the CNN-based model achieved the best accuracy (88.5%) for the classification of content type. The proposed Naive Bayes and logistic repression with predetermined features can best differentiate audience types and information source with an accuracy of 72.7% and 72.2%, respectively.
作者机构：
[Li, Qing; Sun, Jianwen] Cent China Normal Univ, Natl Engn Lab Educ Big Data, Wuhan, Peoples R China.;[Lu, Zijian; Zhou, Jianpeng; Zhang, Kai] Cent China Normal Univ, Natl Engn Res Ctr Learning, Wuhan, Peoples R China.
会议名称：
14th International Conference on Knowledge Science, Engineering, and Management (KSEM)
会议时间：
AUG 14-16, 2021
会议地点：
Tokyo, JAPAN
会议主办单位：
[Sun, Jianwen;Li, Qing] Cent China Normal Univ, Natl Engn Lab Educ Big Data, Wuhan, Peoples R China.^[Zhou, Jianpeng;Zhang, Kai;Lu, Zijian] Cent China Normal Univ, Natl Engn Res Ctr Learning, Wuhan, Peoples R China.
摘要：
Knowledge tracing predicts students' future performance based on their past performance. Most of the existing models take skills as input, which neglects question information and further limits the model performance. Inspired by item-item collaborative filtering in recommender systems, we propose a question-question Collaborative embedding method for Knowledge Tracing (CoKT) to introduce question information. To be specific, we incorporate student-question interactions and question-skill relations to capture question similarity. Based on the similarity, we further learn question embeddings, which are then integrated into a neural network to make predictions. Experiments demonstrate that CoKT significantly outperforms baselines on three benchmark datasets. Moreover, visualization illustrates that CoKT can learn interpretable question embeddings and achieve more obvious improvement on AUC when the interaction data is more sparse.
摘要：
In this paper, we propose a new model that combines reinforcement learning and adversarial training to exploit the data generated by distant supervision for named entity recognition. Our model can not only reduce the influence of noise in generated data, but also find more informative instances for training. In the pre-training stage of the model, in order to make full use of the data generated by distant supervision, we use reinforcement learning to select reliable instances to pre-train a classifier. In the training stage of the model, we introduce the adversarial training mechanism, which can not only find more reliable instances to enhance the ability of the classifier, but also use noise data to improve the ability of the model to resist noise. To evaluate the performance of the model, we conduct experiments on two public datasets, Species800 dataset in biology and EC dataset in e-commerce domain. The experimental results show that in Species800 dataset, the F1 score of our model is 1.68% higher than that of baseline, and in EC dataset, the F1 score of our model is 6.32% higher than that of baseline. Compared to the state of art models, our model can achieve comparable performance just using word2vec embedding.
作者机构：
[Chen, Meng; Xu, Jian; Wu, Chen; Ma, Jiman; Wu, Di] Cent China Normal Univ, Natl Engn Res Ctr E Learning, Wuhan, Peoples R China.;[Ma, Binbin] South Cent Univ Nationalities, Sch Management, Wuhan, Peoples R China.
会议名称：
7th International Conference of the Immersive-Learning-Research-Network (iLRN)
会议时间：
MAY 17-JUN 10, 2021
会议地点：
ELECTR NETWORK
会议主办单位：
[Wu, Chen;Chen, Meng;Wu, Di;Ma, Jiman;Xu, Jian] Cent China Normal Univ, Natl Engn Res Ctr E Learning, Wuhan, Peoples R China.^[Ma, Binbin] South Cent Univ Nationalities, Sch Management, Wuhan, Peoples R China.
关键词：
ICT evaluation process in education;real-time monitoring;3D visualization;CesiumJS
摘要：
ICT (information and communications technology) evaluation in education is a key step in measuring the development level of education informatization. At present, the statistical data of evaluation process mainly be transmitted in the form of static chart files. How to grasp the overall evaluation status of each evaluation area in real time and understand the latest progress and bottlenecks of evaluation work is an urgent problem. This work-in-progress paper proposes a real-time monitoring system for ICT evaluation process in education based on CesiumJS 3D visualization, which can provide multi-modal 3D visualization for dynamic evaluation process data and further support knowledge mining.
作者机构：
[Nonaka, Toshihiro] Cent China Normal Univ, Wuhan 430079, Peoples R China.;Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
通讯机构：
[Nonaka, Toshihiro] C;Cent China Normal Univ, Wuhan 430079, Peoples R China.
会议名称：
28th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter)
会议时间：
NOV 04-09, 2019
会议地点：
Wuhan, PEOPLES R CHINA
会议主办单位：
[Nonaka, Toshihiro] Cent China Normal Univ, Wuhan 430079, Peoples R China.^Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
摘要：
Higher-order cumulants of the net-baryon multiplicity distributions are predicted to be sensitive to the properties of the nuclear matter created in high-energy nuclear collisions. In this talk, we present the collision centrality and acceptance (rapidity and transverse momentum) dependence of the ratio of the 6th- to the 2nd-order cumulant ratio (C-6/C-2) of netproton in Au+Au collisions at root sNN = 54.4 and 200 GeV measured by the STAR detector at RHIC. The new results are compared to hadron transport model and lattice QCD calculations.
摘要：
目的：通过实验法探讨效用价值干预对不同表现期望者的情境兴趣和网络学习效果的影响，网络学习效果包括两个方面即：学习满意度(主观指标)和测试成绩(客观指标)。方法：实验采用2×2 组间设计，自变量为效用价值(干预组、控制组)、表现期望(高、低)，因变量为情境兴趣和网络学习效果，初始兴趣、笔算能力和先前的知识经验作为控制变量。实验以两位数心算方法作为学习材料，利用ASP(Active Server Page)编程工具制作网络专题学习网站。
作者机构：
[Lin, Yufu] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Lin, Yufu] C;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
会议名称：
28th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter)
会议时间：
NOV 04-09, 2019
会议地点：
Wuhan, PEOPLES R CHINA
会议主办单位：
[Lin, Yufu] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.^Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
关键词：
Heavy-ion collisions;chiral magnetic effect;signed balance function;reaction plane
摘要：
Experimental searches for Chiral Magnetic Effect (CME) in heavy-ion collisions have been going on for a decade, and so far there is no conclusive evidence for its existence. Recently, the Signed Balance Function (SBF), based on the idea of examining the momentum ordering of charged pairs along the inand out-of-plane directions, has been proposed as a probe of CME. In this approach, a pair of observables is invoked: one is r(rest), the out-of-plane to in-plane ratio of Delta B measured in pair's rest frame, where Delta B is the difference between signed balance functions; The other is a double ratio, R-B = r(rest)/r(lab), where r(lab) is a measurement similar to r(rest) but measured in the laboratory frame. These two observables give opposite responses to the CME-driven charge separation compared to the background correlations arising from resonance flow and global spin alignment. Both r(rest) and R-B being larger than unity can be regarded as a case in favor of the existence of CME. It is found experimentally that r(rest), r(lab) and R-B are larger than unity in Au+Au collisions at 200 GeV, and larger than realistic model calculations with no CME implemented. These findings are difficult to be explained by a background-only scenario.
作者机构：
[Gyulassy, M.; Jacobs, P. M.; Wang, X. N.; Yuan, F.] Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA.;[Gyulassy, M.; Wang, X. N.] Cent China Normal Univ, Inst Particle Phys, Wuhan, Peoples R China.;[Liao, J.] Indiana Univ, Phys Dept, 2401 N Milo B Sampson Lane, Bloomington, IN 47408 USA.;[Liao, J.] Indiana Univ, Ctr Explorat Energy & Matter, 2401 N Milo B Sampson Lane, Bloomington, IN 47408 USA.;[Shi, S.] McGill Univ, Dept Phys, 3600 Rue Univ, Montreal, PQ H3A 2T8, Canada.
通讯机构：
[Gyulassy, M.] L;[Gyulassy, M.] C;Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA.;Cent China Normal Univ, Inst Particle Phys, Wuhan, Peoples R China.
会议名称：
28th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter)
会议时间：
NOV 04-09, 2019
会议地点：
Wuhan, PEOPLES R CHINA
会议主办单位：
[Gyulassy, M.;Jacobs, P. M.;Wang, X. N.;Yuan, F.] Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA.^[Gyulassy, M.;Wang, X. N.] Cent China Normal Univ, Inst Particle Phys, Wuhan, Peoples R China.^[Liao, J.] Indiana Univ, Phys Dept, 2401 N Milo B Sampson Lane, Bloomington, IN 47408 USA.^[Liao, J.] Indiana Univ, Ctr Explorat Energy & Matter, 2401 N Milo B Sampson Lane, Bloomington, IN 47408 USA.^[Shi, S.] McGill Univ, Dept Phys, 3600 Rue Univ, Montreal, PQ H3A 2T8, Canada.
关键词：
Quark Gluon Plasmas;Heavy Ion Collision;Jet Quenching;Dijet Acoplanarity
摘要：
Using the CUJET3=DGLV+VISHNU jet-medium interaction framework, we show that dijet azimuthal acoplanarity in high energy A + A collisions is sensitive to possible non-perturbative enhancement of the jet transport coefficient, (q) over cap (T, E), in the QCD crossover temperature T similar to 150 - 300 MeV range. With jet-medium couplings constrained by global RHIC& LHC chi(2) fits to nuclear modification data on R-AA(p(T) > 20) GeV, we compare predictions of the medium induced dijet transverse momentum squared, Q(s)(2) similar to ((q) over capL) similar to Delta phi E-2(2), in two models of the temperature, T, and jet energy E dependence of the jet medium transport coefficient, (q) over cap (T, E). In one model, wQGP, the chromo degrees of freedom (dof) are approximated by a perturbative dielectric gas of quark and gluons dof. In the second model, sQGMP, we consider a nonperturbative partially confined semi-Quark-Gluon-Monopole-Plasma with emergent color magnetic dof constrained by lattice QCD data. Unlike the slow variation of the scaled jet transport coefficient, (q) over cap (wQGP)/T-3, the sQGMP model (q) over cap (sQGMP)/T-3 features a sharp maximum in the QCD confinement crossover T range. We show that the dijet path averaged medium induced azimuthal acoplanarity, Delta phi(2), in sQGMP is robustly similar to 2 times larger than in perturbative wQGP. even though the radiative energy loss in both models is very similar as needed to fit the same R-AA data. Future A+A dijet acoplanarity measurements constrained together with single jet R-AA and v(n) measurements therefore appears to be a promising strategy to search for possible signatures of critical opalescence like phenomena in the QCD confinement temperature range.
作者机构：
[Wang, Qun; Wu, Hong-Zhong] Univ Sci & Technol China, Dept Modern Phys, Hefei, Peoples R China.;[Pang, Long-Gang] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China.;[Pang, Long-Gang] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.;[Huang, Xu-Guang] Fudan Univ, Phys Dept, Shanghai 200433, Peoples R China.;[Huang, Xu-Guang] Fudan Univ, Ctr Particle Phys & Field Theory, Shanghai 200433, Peoples R China.
通讯机构：
[Wu, Hong-Zhong] U;Univ Sci & Technol China, Dept Modern Phys, Hefei, Peoples R China.
会议名称：
28th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter)
会议时间：
NOV 04-09, 2019
会议地点：
Wuhan, PEOPLES R CHINA
会议主办单位：
[Wu, Hong-Zhong;Wang, Qun] Univ Sci & Technol China, Dept Modern Phys, Hefei, Peoples R China.^[Pang, Long-Gang] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China.^[Pang, Long-Gang] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.^[Huang, Xu-Guang] Fudan Univ, Phys Dept, Shanghai 200433, Peoples R China.^[Huang, Xu-Guang] Fudan Univ, Ctr Particle Phys & Field Theory, Shanghai 200433, Peoples R China.
关键词：
Heavy-ion collision;Local spin polarization;Spin chemical potential;Temperature vorticity
摘要：
We calculated the azimuthal angle dependence of the local spin polarization of hyperons in 200 GeV Au+Au and 2.76 TeV Pb+Pb collisions in the framework of the (3+1)D viscous hydrodynamic model CLVisc with AMPT initial conditions encoding initial orbital angular momenta. We find that the azimuthal angle dependence of the hyperon polarization strongly depends on the choice of the spin chemical potential Omega(mu nu). With Omega(mu nu) chosen to be proportional to the temperature vorticity, our simulation shows coincidental results with the recent measurements at RHIC.
摘要：
Anisotropic flow fluctuations can be used to constrain the initial conditions and probe the properties and evolution of the system created in heavy-ion collisions. In this proceeding, the P-T-differential flow coefficient v(n) with 2-, 4-, 6- and 8-particle cumulants for charged hadrons are investigated, which allows to study the higher order moments, including skewness and kurtosis, of v(2) probability density function (p.d.f.). In addition, the v2 fluctuations of pi(+/-), K-+/-, p + (p) over bar, phi, K-s(0), A + (A) over bar and Xi(-) + Xi(=) are also measured at mid rapidity in Pb-Pb collisions at root S-NN = 5.02 TeV using multi-particle cumulants. The implications of the results for understanding the properties of the medium are discussed.
作者：
Marzuki, Sharifah Zannierah Syed*;Osman, Che Asniza;Buyong, Siti Zahrah;Zreik, Mohamad
作者机构：
[Buyong, Siti Zahrah; Osman, Che Asniza; Marzuki, Sharifah Zannierah Syed] Univ Teknol MARA, Fac Business & Management, Puncak Alam Campus, Puncak Alam, Malaysia.;Cent China Normal Univ, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
会议名称：
9th Asian Conference on Environment-Behaviour Studies
会议时间：
JUL 28-29, 2021
会议地点：
Kelantan, MALAYSIA
会议主办单位：
[Marzuki, Sharifah Zannierah Syed;Osman, Che Asniza;Buyong, Siti Zahrah] Univ Teknol MARA, Fac Business & Management, Puncak Alam Campus, Puncak Alam, Malaysia.^Cent China Normal Univ, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
摘要：
This study used factor analysis to investigate relationships between educator to student interactions, the relationship between students, skills to critical thinking, and motivation. Factor analysis showed that there are three factors; passion, assistance, and guidance. Meanwhile, the adequacy is 0.945 surpassing the recommended value of 0.50 using Kaiser Meyer Olkin. The statistical significance of Bartlett's Test of Sphericity test indicated that 0.00 and chi 2 = 3552.973. Adequacy measurement of Anti-Image Correlation Matrix ranges from 0.49 to 0.69. It is significantly important that educators guide the students in becoming more creative and innovative by using and applying DTMP during the learning process.
摘要：
Heavy quarks are unique probes to investigate the properties of the Quark-Gluon Plasma (QGP) formed in ultra-relativistic heavy-ion collisions. The ALICE Collaboration measured the D-meson elliptic flow, v(2), in Pb-Pb collisions at root s(NN) = 5.02 TeV to study the participation of the low and intermediate transverse momentum (p(T)) charm quarks in the collective expansion of the system. The charm-quark dynamic in the QGP is further investigated through the Event Shape Engineering (ESE) technique. Furthermore, the effect of unprecedented strong magnetic field produced in heavy-ion collisions is studied by measuring the charged-dependent directed flow (v(1)) of D-0 mesons for the first time at the LHC. Recent results of azimuthal anisotropy of open heavy-flavour decay electrons and muons in p-Pb collisions at root s(NN) = 5.02 TeV and root s(NN) = 8.16 TeV, respectively, are also shown.
