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Assessing Beijing's PM2:5 Pollution: Severity, Weather Impact, APEC and Winter Heating
Air Quality Meteorological Condition Observational Study Quasi-Experiment
2016/1/26
By learning the PM 2.5 readings and meteorological records in 2010-2015, the severity of PM 2.5 pollution in Beijing is quantified with a set of statistical measures. As PM 2.5 concentration is highly...
Matter-wave solitons in the presence of collisional inhomogeneities: Perturbation theory and the impact of derivative terms
Dynamic soliton atomic scattering length nonlinear dynamic
2014/12/24
We investigate the dynamics of matter-wave solitons in the presence of a spatially varying atomic scattering length and nonlinearity. The dynamics of bright and dark solitary waves is studied using th...
The Impact of Levene's Test of Equality of Variances on Statistical Theory and Practice
ANOVA equality of variances Levene’s test trend tests effect of dependence applied statistics
2010/10/14
In many applications, the underlying scientific question concerns whether the variances of $k$ samples are equal. There are a substantial number of tests for this problem. Many of them rely on the as...
Inference in incidence, infection, and impact: Co-infection of multiple hosts by multiple pathogens
DNA sequencedata forest dynamics Janzen Connell hypothesis species diversity variable selection
2009/9/24
A large literature concerns the epidemiology of single pathogens on single hosts. Yet in some environmental applications, such as fungal pathogens of forest tree seedlings, the “one host-one...