Results 41 to 50 of about 11,536 (152)
Advances in Difference Equations, 2019 In this paper, we explore a stochastic non-autonomous one-predator–two-prey system with Beddington–DeAngelis functional response and impulsive perturbations.
Haokun Qi, Xinzhu Meng, Tao Feng
doaj +1 more source
The LIL for canonical U-statistics of order 2
, 1999 Let X,X_1,X_2,... be independent identically distributed random variables and let h(x,y)=h(y,x) be a measurable function of two variables.
Giné, Evarist +3 more
core +3 more sources
Unconditional Variance Estimation Under Complex Surveys
International Statistical Review, EarlyView.Summary The unconditional framework treats the samples and the variables of interest as random variables. This is particularly suitable with analytic inference, when modelling survey data. We show that variance estimation does not involve finite population corrections and joint‐inclusion probabilities, even with large sampling fractions and under ...
Yves G. Berger
wiley +1 more source
Properties of the Standard Deviation that are Rarely Mentioned in Classrooms
Austrian Journal of Statistics, 2016 Unlike the mean, the standard deviation ¾ is a vague concept. In this paper, several properties of ¾ are highlighted. These properties include the minimum and the maximum of ¾, its relationship to the mean absolute deviation and the range of the data ...
Mohammad Fraiwan Al-Saleh +1 more
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Some New Inequalities of Dirichlet Eigenvalues for Laplace Operator with any Order [PDF]
, 2014 In this paper, we establish several inequalities of Dirichlet eigenvalues for Laplace operator $\Delta $ with any order on \emph{n}-dimensional Euclidean space.
Huang, Na, Niu, Pengcheng
core
On the chaotic character of the stochastic heat equation, before the onset of intermitttency
, 2013 We consider a nonlinear stochastic heat equation $\partial_tu=\frac{1}{2}\partial_{xx}u+\sigma(u)\partial_{xt}W$, where $\partial_{xt}W$ denotes space-time white noise and $\sigma:\mathbf {R}\to \mathbf {R}$ is Lipschitz continuous. We establish that, at
Conus, Daniel +2 more
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A Non‐Parametric Framework for Correlation Functions on Product Metric Spaces
International Statistical Review, EarlyView.Summary We propose a non‐parametric framework for analysing data defined over products of metric spaces, a versatile class encountered in various fields. This framework accommodates non‐stationarity and seasonality and is applicable to both local and global domains, such as the Earth's surface, as well as domains evolving over linear time or time ...
Pier Giovanni Bissiri +3 more
wiley +1 more source
Mathematics, 2020 Adding a linear trend in regressions is a frequent detrending method in economic literatures. The traditional literatures pointed out that if the variable considered is a difference-stationary process, then it will artificially create pseudo-periodicity ...
Zhiming LONG, Rémy HERRERA
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The Impact of COVID–19 on EU‑China Trade Flows
Comparative Economic Research, 2022 COVID–19 is expected to have contributed towards changing the geographical structure of world trade, including trade between individual EU countries and China.
Dominika Choroś‑Mrozowska
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Sequential Outlier Detection in Nonstationary Time Series
Journal of Time Series Analysis, EarlyView.ABSTRACT A novel method for sequential outlier detection in nonstationary time series is proposed. The method tests the null hypothesis of “no outlier” at each time point, addressing the multiple testing problem by bounding the error probability of successive tests, using extreme‐value theory. The asymptotic properties of the test statistic are studied
Florian Heinrichs +2 more
wiley +1 more source