3,610 research outputs found
Epidemic spreading induced by diversity of agents' mobility
In this paper, we study into the impact of the preference of an individual
for public transport on the spread of infectious disease, through a quantity
known as the public mobility. Our theoretical and numerical results based on a
constructed model reveal that if the average public mobility of the agents is
fixed, an increase in the diversity of the agents' public mobility reduces the
epidemic threshold, beyond which an enhancement in the rate of infection is
observed. Our findings provide an approach to improve the resistance of a
society against infectious disease, while preserving the utilization rate of
the public transportation system.Comment: 8 pages, 5 figure
Multiple Change-point Detection: a Selective Overview
Very long and noisy sequence data arise from biological sciences to social
science including high throughput data in genomics and stock prices in
econometrics. Often such data are collected in order to identify and understand
shifts in trend, e.g., from a bull market to a bear market in finance or from a
normal number of chromosome copies to an excessive number of chromosome copies
in genetics. Thus, identifying multiple change points in a long, possibly very
long, sequence is an important problem. In this article, we review both
classical and new multiple change-point detection strategies. Considering the
long history and the extensive literature on the change-point detection, we
provide an in-depth discussion on a normal mean change-point model from aspects
of regression analysis, hypothesis testing, consistency and inference. In
particular, we present a strategy to gather and aggregate local information for
change-point detection that has become the cornerstone of several emerging
methods because of its attractiveness in both computational and theoretical
properties.Comment: 26 pages, 2 figure
IR-improved Soft-wall AdS/QCD Model for Baryons
We construct an infrared-improved soft-wall AdS/QCD model for baryons by
considering the infrared-modified 5D conformal mass and Yukawa coupling of the
bulk baryon field. The model is also built by taking into account the
parity-doublet pattern for the excited baryons. When taking the bulk vacuum
structure of the meson field to be the one obtained consistently in the
infrared-improved soft-wall AdS/QCD model for mesons, we arrive at a consistent
prediction for the baryon mass spectrum in even and odd parity. The prediction
shows a remarkable agreement with the experimental data. We also perform a
calculation for the meson-nucleon coupling constant and obtain a
consistent result in comparison with the experimental data and many other
models.Comment: 12 pages, 4 tables, 1 figure, to be published in PL
The Cultivation of Critical Thinking Skills in Intercultural Communication Course
The cultivation of critical thinking skills and intercultural communication competence have been put on list of top priorities in the current English teaching and education reform. The 2000 version of Higher Education Teaching Syllabus for English Majors stresses the importance of cultivating independent thinking and innovative skills, and also emphasizes the significance of incorporating students’ cultural sensitivity, flexibility to meet the demands of increasingly widespread international communication. Moreover, fostering intercultural communication competence is an important part of developing critical thinking skills, and these two are correlated in the process of language teaching. This paper explores how to integrate the cultivation of critical thinking skills and intercultural communication competence in intercultural communication course by proposing two pedagogical approaches to teaching culture: critical pedagogy and comparison pedagogy.
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