Results 111 to 120 of about 67,239 (298)

Dez Basin Flood Frequency Analysis [PDF]

open access: yesمهندسی منابع آب, 2009
In this research, from data of 26 hydrometric station records and l-moment approach, regional and stational flood frequency of Dez basin was analyzed. For identifying homogeneous regions, Ward hierarchical cluster method was used.
R R, H S, A M
doaj  

Multi-Quantile Estimators for the Parameters of Generalized Extreme Value Distribution

open access: yes
Abstract We introduce and study Multi-Quantile estimators for the parameters $\xi, \sigma, \mu$ of Generalized Extreme Value (GEV) distributions to provide a robust approach to extreme value modeling. Unlike classical estimators, such as the Maximum Likelihood Estimation (MLE) estimator and the Probability Weighted Moments (PWM ...
Lin, Sen, Kong, Ao, Azencott, Robert
openaire   +2 more sources

A note on empirical sample distribution of journal impact factors in major discipline groups [PDF]

open access: yes
What type of statistical distribution do the Journal Impact Factors follow? In the past, researchers have hypothesized various types of statistical distributions underlying the generation mechanism of journal impact factors. These are: lognormal, normal,
Mishra, SK
core   +1 more source

Order-statistics-based inferences for censored lifetime data and financial risk analysis [PDF]

open access: yes, 2013
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis focuses on applying order-statistics-based inferences on lifetime analysis and financial risk measurement.
Sheng, Zhuo
core  

AI–Guided 4D Printing of Carnivorous Plants–Inspired Microneedles for Accelerated Wound Healing

open access: yesAdvanced Materials, EarlyView.
This work presents an artificial intelligence (AI)‐guided 4D‐printed microneedle platform inspired by carnivorous plants for wound healing. A thermo‐responsive shape memory polymer enables body temperature–triggered self‐coiling for autonomous wound closure.
Hyun Lee   +21 more
wiley   +1 more source

Disturbing Extremal Behavior of Spot Rate Dynamics [PDF]

open access: yes
This paper presents a study of extreme interest rate movements in the U.S. Federal Funds market over almost a half century of daily observations from the mid 1950s through the end of 2000. We analyze the fluctuations of the maximal and minimal changes in
Turan G. Bali, Salih N. Neftci
core  

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

open access: yesAdvanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena   +3 more
wiley   +1 more source

Modelling Extreme Rainfall using Extended Generalized Extreme Value Distribution

open access: yesInternational Journal of Analysis and Applications
This study assesses the performance of extended generalized extreme value (GEV) distribution based on Kumaraswamy generalized extreme value (KumGEV) distribution using the maximum likelihood estimates on extreme rainfall data obtained from a weather station in Phitsanulok province, a total of 408 months during January 1987 to December 2021.
N. Deetae, P. Khamrot, K. Jampachaisri
openaire   +1 more source

Income distribution and inequality measurement: The problem of extreme values [PDF]

open access: yes
We examine the statistical performance of inequality indices in the presence of extreme values in the data and show that these indices are very sensitive to the properties of the income distribution. Estimation and inference can be dramatically affected,
Frank A. Cowell, Emmanuel Flachaire
core  

Improving Modeling of Extreme Events using Generalized Extreme Value Distribution or Generalized Pareto Distribution with Mixing Unconditional Disturbances [PDF]

open access: yes, 2009
In this paper an alternative non-parametric historical simulation approach, the Mixing Unconditional Disturbances model with constant volatility, where price paths are generated by reshuffling disturbances for S&P 500 Index returns over the period 1950 -
Suarez, Ronny
core  

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