A5100373670- Data-Driven Disease Surveillance
- Human Mobility and Location-Based Analysis
- COVID-19 epidemiological studies
- Algebraic structures and combinatorial models
- Land Use and Ecosystem Services
- Advanced Operator Algebra Research
- Topological Materials and Phenomena
- Spatial and Panel Data Analysis
- COVID-19 Pandemic Impacts
- Advanced Topics in Algebra
- Quantum many-body systems
- Forensic and Genetic Research
- Takotsubo Cardiomyopathy and Associated Phenomena
- Stochastic processes and statistical mechanics
- Urban Transport and Accessibility
- Computational Fluid Dynamics and Aerodynamics
- Gas Dynamics and Kinetic Theory
- Electromagnetic Simulation and Numerical Methods
- Digital Media Forensic Detection
- Regional Economics and Spatial Analysis
- Advanced Banach Space Theory
- Health disparities and outcomes
- Geometric Analysis and Curvature Flows
- Advanced Mathematical Physics Problems
- Misinformation and Its Impacts
Institute of Geographic Sciences and Natural Resources Research
2020-2024
University of Chinese Academy of Sciences
2020-2024
Chinese Academy of Sciences
2020-2024
Film Independent
2020
Medical University of Vienna
2020
University of Illinois Urbana-Champaign
2016-2017
Nankai University
2015
Pennsylvania State University
2010
In response to the COVID-19 pandemic, governments have implemented a wide range of non-pharmaceutical interventions (NPIs). Monitoring and documenting government strategies during crisis is crucial understand progression epidemic. Following content analysis strategy existing public information sources, we developed specific hierarchical coding scheme for NPIs. We generated comprehensive structured dataset their respective timelines implementation. To improve transparency motivate...
We discuss (2+1)-dimensional gapless surface theories of bulk (3+1)-dimensional topological phases, such as the BF theory at level $\mathrm{K}$, and its generalization. In particular, we put these on a flat (2+1) dimensional torus $T^3$ parameterized by modular parameters, compute partition functions obeying various twisted boundary conditions. show are transformed into each other under $SL(3,\mathbb{Z})$ transformations, furthermore establish bulk-boundary correspondence in (3+1) dimensions...
We construct classical self-similar solutions to the interaction of two arbitrary planar rarefaction waves for Euler equations in space dimensions via characteristics analysis without hodograph transformations. succeed case that (half) angle is between π/6 and π/2 gas constant gamma one two.
Geographical flow (hereafter flow) can be modeled as an orderly connected point pair composed of origin (O) and a destination (D). Aggregation is the most common form spatial heterogeneity flows, which we define their deviation from complete randomness (CSR), aggregation scale important indicator for its perception. Nevertheless, quantifying flows still unsolved problem. In this paper, propose L-function solution, derive theoretical null models K-function in space. We conduct simulation...
The centrality of a place reflects its relative importance in serving other places, and quantifying is prerequisite for assessing the urban spatial structure facilitates policy-making sustainable development. Two important aspects are amount service it provides to places diversity serves. For example, central city attracts not only many people but also from various cities. However, few existing measures can address two simultaneously. In this study, following idea scholar's H-index, we...
Abstract In response to the COVID-19 pandemic, governments have implemented a wide range of nonpharmaceutical interventions (NPIs). Monitoring and documenting government strategies during crisis is crucial understand progression epidemic. Following content analysis strategy existing public information sources, we developed specific hierarchical coding scheme for NPIs. We generated comprehensive structured dataset their respective timelines implementation. To improve transparency motivate...
The first wave of the 2019 novel coronavirus (COVID-19) epidemic in China showed there was a lag between reduction human mobility and decline COVID-19 transmission this different cities. A prolonged would cause public panic reflect inefficiency control measures. This study aims to quantify time-lag effect reveal its influencing socio-demographic environmental factors, which is helpful policymaking controlling other potential infectious diseases future. We combined city-level index new case...
The multiflavor $\mathit{BF}$ theories in (3+1) dimensions with cubic or quartic coupling are the simplest topological quantum field that can describe fractional braiding statistics between looplike excitations (three-loop four-loop statistics). In this paper, by canonically quantizing these theories, we study algebra of Wilson loop and surface operators, multiplets ground states on three-torus. particular, coupled three-torus, explicitly calculate $\mathcal{S}$ $\mathcal{T}$ matrices, which...
Geographical flows reflect the movements, spatial interactions or connections among locations and are generally abstracted as origin-destination (OD) flows. In this context, clustering is a pattern describing group of with adjacent O D points. For data composed two types (bivariate-flow data), bivariate-flow cluster comprising flows, at least one which exhibits pattern. cluster, varying flow density combinations imply different meanings. instance, high-density travel on both weekdays (type...
新型冠状病毒肺炎(COVID-19)在城市内部的病例时空聚集性特征及影响因素对于疫情防控具有重要参考价值。论文以重庆市为例,收集2020年1月21日—2月24日的458例COVID-19确诊病例数据,结合手机信令数据与空间环境数据,采用空间聚集性分析、因子分析与回归分析等方法,探究重庆市新冠疫情在街道尺度上的时空聚集性特征,并分析其影响因素。结果表明:① 时间上,确诊病例前期增长较快,以外地输入为主,后期逐渐趋缓,以本地传播(包括街道间传播、街道内传播、家庭内传播)为主,其中家庭内传播占比最大(23%);② 空间上,病例呈现显著的聚集特征,且聚集性逐渐增强,热点街道分布于重庆市西部、东北部;分类型来看,本地病例热点街道集中于人口密度较大、经济发展更好的西北部、西南部,外地输入病例热点街道集中于地理邻近湖北省的中部、东北部;③...
The multipeg Towers of Hanoi problem consists k pegs mounted on a board together with n disks different sizes. Initially these are placed one peg in the order their size, largest at bottom. rules allow to be moved time from another as long disk is never top smaller disk. goal transfer all minimum number moves, denoted by H(n,k). An easy recursive argument shows that H(n,3)= 2n -1. However, computing exact value H(n,k) for $k \ge 4$ has been open since 1939, and particular, special case...
In this short paper, we obtained some equivalent formulations of property T for a general locally compact quantum group 𝔾, in terms the full C*-algebras [Formula: see text] and *-representation associated with trivial unitary corepresentation (that generalize corresponding results groups). Moreover, if 𝔾 is Kac type, show that has only every finite-dimensional irreducible an isolated point spectrum (this also generalizes result). addition, give way to construct discrete groups using...
Abstract Network‐constrained points are constrained by and distributed on road networks, for example, taxi pick‐up drop‐off locations. The aggregation pattern (clustering) of network‐constrained (significantly denser than randomly distributed) along roads may indicate spatial anomalies. For detecting quantifying the with highest intensity (i.e., number per network length) can reveal high demand. K‐function its derivative (incremental K‐function) have been utilized to identify point...
For a locally convex $^*$-algebra $A$ equipped with fixed continuous $^*$-character $\varepsilon$ (which is roughly speaking generalized $F^*$-algebra), we define cohomological property, called property $(FH)$, which similar to character amenabil
Abstract Understanding individual's socioeconomic status (SES) can provide supporting information for designing political and economic policies. Acquiring large‐scale survey data is time‐consuming laborious. The widespread mobile phone data, which reflect human mobility social network characteristics, has become a low‐cost source researchers to infer SES. However, previous studies often oversimplify features extracted from into general statistical features, resulting in discounting some...
A real-time MRI technique is developed using deep-learning reconstruction. Its feasibility evaluated in both healthy subjects and patients with gastroesophageal reflux diseases.
In this short article, we obtained some equivalent formulations of property $T$ for a general locally compact quantum group $\mathbb{G}$, in terms the full $C^*$-algebras $C_0^\mathrm{u}(\widehat{\mathbb{G}})$ and $*$-representation associated with trivial unitary corepresentation (that generalize corresponding results groups). Moreover, if $\mathbb{G}$ is Kac type, show that has only every finite dimensional irreducible an isolated point spectrum (this also generalizes result). addition,...
In this note we research the Abelian Higgs model subject to Born-Infeld theory of electrodynamics for which BPS equations can be reduced into a quasi-linear differential equation. We show that equation exists unique solution under two interesting boundary conditions realize corresponding phase transition. construct through dynamical shooting method correct slope is unique. also obtain sharp asymptotic estimate at infinity.
The Fisher-Kolmogorov-Petrovsky-Piskunov (FKPP) equation provides a mean-field theory of out-of-time-ordered commutators in locally interacting quantum chaotic systems at high energy density; the with power-law interactions, corresponding fractional-derivative FKPP an analogous theory. However, fractional description is potentially subject to strong fluctuation effects, so it not clear priori if suitable effective for generic interactions. Here we study this problem using model coupled dots...