Results 131 to 140 of about 5,687 (280)

Estimation of the autocorrelation coefficients in a stationary lognormal process

Journal of the Japan Statistical Society, Japanese Issue, 1987
The sequence of positive random variables \(\{Y_ t\}\) is called a stationary lognormal process with parameters \(\mu\), \(\sigma^ 2\) and \(\rho_ h\), \(h=0,\pm 1,\pm 2,...\), if the sequence of logarithmic variables \(\{\) ln \(Y_ t\}\) is stationary and Gaussian with mean \(\mu\), variance \(\sigma^ 2\) and autocorrelation coefficients \(\rho_ h ...
openaire   +2 more sources

On exact D-optimal designs with 2 two-level factors and n autocorrelated observations

D-optimal design, AR(1) process, Markov process, autocorrelated observations, two-level factor,
Mong-Na Lo Huang, Hong-Gwa Yeh
core   +1 more source

The effect of Phase I sample size on the run length performance of control charts for autocorrelated data

, 2008
Traditional control charts assume independence of observations obtained from the monitored process. However, if the observations are autocorrelated, these charts often do not perform as intended by the design requirements.
Ula, Taylan Ali, Gulser Koksal, Taylan Ali Ula, Murat Caner Testik, Burcu Kantar, Kantar, Burcu, Testik, Murat Caner, Köksal, Gülser   +7 more
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The Industrial Organization of Regulatory Capture

Social Science Quarterly, Volume 107, Issue 4, July 2026.
ABSTRACT Objective This study evaluates the role that the economic organization of an industry plays in its ability to successfully pressure government regulators for laxer enforcement Methods The effect of the industrial organization of the coal mining industry on environmental regulation is assessed using pooled cross‐sectional time‐series analyses ...
Neal D. Woods, Kenneth Aba, Spencer Baily   +2 more
wiley   +1 more source

Identifying Energy Balance Drivers of Greenland Ice Sheet Surface Melt Using Causal Discovery

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Greenland Ice Sheet (GrIS) mass loss has accelerated in recent decades, primarily due to enhanced surface melt. Identifying the causal dependencies of surface melt remains challenging with conventional correlations. Using the PCMCI+ ${\text{PCMCI}}^{+}$ causal discovery algorithm applied to CESM2 large‐ensemble simulations and evaluated ...
Ziqi Yin, Aneesh C. Subramanian, Rajashree Datta, Adam R. Herrington, Danni Du, Sahara Ali, Omar Faruque, Jianwu Wang   +7 more
wiley   +1 more source

The spread of non‐native species

Biological Reviews, Volume 101, Issue 3, Page 1197-1234, June 2026.
ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock, Ali Serhan Tarkan, Irene Martín‐Forés, Stelios Katsanevakis, Ronaldo Sousa, Ismael Soto, Andy J. Green, Antonín Kouba, Teun Everts, Victoria Dominguez Almela, Nadège Belouard, Cang Hui, Jamie Bojko, Victor Deklerck, Margaux Boeraeve, Franz Essl, J. Robert Britton   +16 more
wiley   +1 more source

Measuring the Impact of the Substitution of Innovator Biologics With Biosimilars on Uptake and Costs Among Ontario Public Drug Benefit Recipients

Clinical Pharmacology &Therapeutics, Volume 119, Issue 6, Page 1476-1484, June 2026.
In Ontario, biologics have historically represented a small proportion of public drug claims but a large proportion of spending. Biosimilars, lower cost alternatives to biologics, offer a potential solution to the rising spending on biologics. From March 2023 to January 2024, the Ontario Ministry of Health required public drug program beneficiaries on ...
Anita Iacono, Martin K. H. Ho, Joanna Yang, Tonya Campbell, William Wynne, Dana Shearer, Lene Andersen, Eric Majer, Shaleesa Ledlie, Mina Tadrous, Tara Gomes   +10 more
wiley   +1 more source

Deriving peri-urban settlement typologies from Landsat time series analysis: the case study of Mankweng and environs (South Africa)

Big Earth Data
Sustainable development is a challenge for highly dynamic peri-urban areas like Mankweng and surroundings, located in a former homeland in South Africa. The analysis adopted a two-step approach to test a key assumption.
Felipe Vásquez Tavera, Deepthi Patric, Gertrud Schaab   +2 more
doaj   +1 more source

Autocorrelation Functions for Point‐Process Time Series

Journal of Time Series Analysis
ABSTRACTThis article introduces autocorrelograms for time series of point processes. Such time series usually arise when a longer temporal or spatio‐temporal point process is sliced into smaller time units; for example, when an annual process is sliced into 365 daily replications.
openaire   +2 more sources

The Performance of Multivariate Quality-Control Charts for Autocorrelated Bivariate Data [PDF]

, 2006
To monitor the mass production process, several quality control charts are constructed. Two of the most recognized schemes are the multivariate exponentially weighted moving average (MEWMA) and multivariate cumulative sum (MCUSUM) schemes. Originally, we
Wu, Chen-Hsiang
core