Results 191 to 200 of about 2,508,958 (213)

Simultaneous Quantification of Two Neonicotinoids Using QuEChERS–LC–MS/MS in Moroccan Spearmint (Mentha Spicata.L): Qualimetry of the Method by Uncertainty Estimation Using Generalized Pivotal Quantities Approach and Monte Carlo Simulation

Journal of AOAC International, 2023
Abstract Background Neonicotinoids (NEOs) are used for the phytosanitary treatment of Mentha Spicata.L crops, and this practice requires precise control of these harmful substances at very low concentrations.
Hicham Aaziz, Taoufiq Saffaj, Yassine Hameda Benchekroun, Bouchaib Ihssane   +3 more
openaire   +2 more sources

Interval Estimates for Probabilities of Non-Perforation Derived From a Generalized Pivotal Quantity

2005
Abstract : A generalized pivotal quantity is developed that yields exact confidence intervals for the cumulative distribution function (CDF) at a specific value when the underlying distribution is assumed to be normal. This problem is similar to the development of a tolerance interval and unsurprisingly, its solution involves the non-central "t ...
openaire   +1 more source

Estimating sediment entrainment thresholds in gravel-bed rivers with the force balance model: Developing location-general relations for predicting grain pivoting angle, projection and exposure

2020
Conditions for bedload movement are most often described in terms of dimensionless critical shear stress (τc∗), however a key difficulty is accurately estimating τc∗, leading to significant uncertainties with entrainment threshold predictions. One approach to predicting τc∗ is with a force balance which considers the relative magnitude of the forces ...
openaire   +1 more source

Flood frequency analysis: confidence interval estimations with generalized extreme value distributions using special pivotal quantities

Stochastic Environmental Research and Risk Assessment
Weiqiang Zheng, Shuguang Liu, Zhengzheng Zhou, Yiping Guo   +3 more
openaire   +1 more source

Frequency Analysis in Flood Management: Confidence Interval Estimations Based on Pivotal Quantities in Generalized Extreme Value Distribution

41st IAHR World Congress
Weiqiang Zheng, Shuguang Liu, Zhengzheng Zhou, Guihui Zhong   +3 more
openaire   +1 more source

Quantile estimation in frequency analysis of hydrologic variables for the generalized Pareto distribution: An approach based on specially formulated pivotal quantities

Water Resources Management
Weiqiang Zheng, Shuguang Liu, Zhengzheng Zhou   +2 more
openaire   +1 more source

Estimation of Matusita measure between generalized inverted exponential distributions under progressive first-failure censored data

Journal of Computational and Applied Mathematics, 2023
Sanku Dey, Yuhlong Lio, Huizhong Lin
exaly  

Generalized confidence interval estimation for the mean of delta-lognormal distribution: an application to New Zealand trawl survey data

Journal of Applied Statistics, 2014
Wei-Hwa Wu, Hsin-Neng Hsieh
exaly  

A generalized pivotal quantity approach to portfolio selection

Journal of Applied Statistics, 2017
Plh Yu
exaly  

Point and Interval Estimation for a Generalized Logistic Distribution Under Progressive Type II Censoring

Communications in Statistics - Theory and Methods, 2006
Akbar Asgharzadeh
exaly