Results 41 to 50 of about 205,970 (321)

Rainfall statistics, stationarity, and climate change

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2018
Significance Precipitation shows large year-to-year variations, and there is interest in whether there have been long-lasting changes. We use a global land-based database (1940–2009) of annual precipitation and find evidence for changes at around 14% of ...
F. Sun, M. Roderick, G. Farquhar
semanticscholar   +1 more source

The Computational Complexity of Estimating Convergence Time [PDF]

open access: yes, 2010
An important problem in the implementation of Markov Chain Monte Carlo algorithms is to determine the convergence time, or the number of iterations before the chain is close to stationarity. For many Markov chains used in practice this time is not known.
Bhatnagar, Nayantara   +2 more
core  

Extreme 1-day rainfall distributions: Analysing change in the Western Cape

open access: yesSouth African Journal of Science, 2017
Severe floods in the Western Cape Province of South Africa have caused significant damage to property and infrastructure over the past decade (2003–2014).
Jan H. de Waal   +2 more
doaj   +1 more source

On a Class of Time Series Model with Double Lindley Distribution as Marginals

open access: yesStatistica, 2022
An autoregressive process of order one with double Lindley distribution as marginal is introduced. A mixture distribution is obtained for the innovation process. Analytical properties of the process are discussed.
Kunnathully Unnikrishnan Nitha   +1 more
doaj   +1 more source

Product differentiation in the fruit industry: Lessons from trademarked apples

open access: yesAgribusiness, EarlyView.
Abstract We derive price premiums for patented or trademarked apple varieties, also known as “club apples,” compared to open‐variety apples. We use an expansive retail scanner dataset, along with unique data on apple taste characteristics, to estimate monthly club apple premiums for 2008–2018.
Modhurima Dey Amin   +3 more
wiley   +1 more source

Increased Quasi Stationarity and Persistence of Winter Ural Blocking and Eurasian Extreme Cold Events in Response to Arctic Warming. Part I: Insights from Observational Analyses

open access: yes, 2017
Part I of this study examines the relationship among winter cold anomalies over Eurasia, Ural blocking (UB), and the background conditions associated with Arctic warming over the Barents and Kara Seas (BKS) using reanalysis data.
Yao Yao, D. Luo, A. Dai, I. Simmonds
semanticscholar   +1 more source

“On a skinny horse in bad weather…”: the problem of availability of land medical care in Russia at the turn of the 19th and 20th centuries (according to the data of the Tula province)

open access: yesStudia Humanitatis, 2022
The article discusses the evolution of “accessibility” concept in zemstvo medicine at the turn of the 19th and 20th centuries. The main theoretical approaches to the definition of this concept at different stages of the development of medical thought are
Lyubushkin Alexander Dmitrievich
doaj  

Water rights, river compacts, and legal-policy stationarity in the American West

open access: yesEnvironmental Research Letters, 2020
This article examines static-data assumptions trapped in water rights and, separately, in larger interstate river compacts in the American West. These reflect assumptions of scalar stationarity embedded in water codes in western states.
Eric P Perramond
doaj   +1 more source

An investigation of the price discovery role of futures markets: A dynamic time warping analysis of the United States corn markets

open access: yesAgribusiness, EarlyView.
Abstract Futures markets are critical to price discovery and often dominate spot markets. We analyze the linkages between daily corn futures and spot prices in the United States using dynamic time warping. This nonparametric pattern recognition technique has several advantages over traditional time series methods.
Dragan Miljkovic   +2 more
wiley   +1 more source

Detecting long-range dependence in non-stationary time series

open access: yes, 2016
An important problem in time series analysis is the discrimination between non-stationarity and longrange dependence. Most of the literature considers the problem of testing specific parametric hypotheses of non-stationarity (such as a change in the mean)
Dette, Holger   +2 more
core   +1 more source

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