Mathematics, Statistics & Physics: المرسلات الحديثة
السجلات المعروضة 281 -- 300 من 814
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Bootstrap confidence intervals for adaptive cluster sampling design based on Horvitz-Thompson type estimators
( Kluwer Academic Publishers , 2014 , Article)Perez and Pontius (J Stat Comput Simul 76:755-764, 2006) introduced several bootstrap methods under adaptive cluster sampling using a Horvitz-Thompson type estimator. Using a simulation study, they showed that their proposed ... -
Asymptotic properties of the sample mean in adaptive stratified sequential sampling with multiple selection criteria
( Iranian Mathematical Society , 2013 , Article)We extend the method of adaptive two-stage sequen-tial sampling to include designs where there is more than one crite-ria used in deciding on the allocation of additional sampling effort. These criteria, or conditions, can ... -
Sampling of Multiple Variables Based on Partially Ordered Set Theory
( Iranian Statistical Society , 2021 , Article)We introduce a new method for ranked set sampling with multiple criteria. The method relaxes the restriction of selecting just one individual variable from each ranked set. Under the new method for ranking, units are ranked ... -
Horvitz-thompson estimator of population mean under inverse sampling designs
( Iranian Mathematical Society , 2012 , Article)Inverse sampling design is generally considered to be an appropriate technique when the population is divided into two subpopulations, one of which contains only a few units. Here, we de- rive the Horvitz-Thompson estimator ... -
An unbalanced ranked-set sampling method to get more than one sample from each set
( American Association for Public Opinion Research , 2018 , Article)In ranked-set sampling, the restriction of selecting just one individual from each set may require too many sets. We propose a new version of ranked-set sampling that relaxes this restriction. Our new design uses stratified ... -
The effect of graphene on the activation energy of grain growth for the nanocrystalline thermoelectric n‑type Bi2Te2.7Se0.3
(2022 , Article)Even though bismuth telluride is frequently produced by mechanical alloying for thermoelectric materials, no data has been published addressing the thermal behavior and activation energy of the milled n-type Bi2Te2.7Se0.3 ... -
Population immunity of natural infection, primary-series vaccination, and booster vaccination in Qatar during the COVID-19 pandemic: an observational study
( Elsevier , 2023 , Article)BackgroundWaning of natural infection protection and vaccine protection highlight the need to evaluate changes in population immunity over time. Population immunity of previous SARS-CoV-2 infection or of COVID-19 vaccination ... -
Effects of previous infection, vaccination, and hybrid immunity against symptomatic Alpha, Beta, and Delta SARS-CoV-2 infections: an observational study
( Elsevier , 2023 , Article)BackgroundProtection against SARS-CoV-2 symptomatic infection and severe COVID-19 of previous infection, mRNA two-dose vaccination, mRNA three-dose vaccination, and hybrid immunity of previous infection and vaccination ... -
Hermite-Hadamard and Fejer-type inequalities for generalized η-convex stochastic processes
( Taylor and Francis Ltd. , 2023 , Article)In this article, we introduce the concept of (Formula presented.) -convex stochastic processes on coordinates and establish Hermite-Hadamard-type inequality for these stochastic processes. Moreover, we prove new integral ... -
Some new integral inequalities for higher-order strongly exponentially convex functions
( Institute for Ionics , 2023 , Article)Integral inequalities with generalized convexity play an important role in both applied and theoretical mathematics. The theory of integral inequalities is currently one of the most rapidly developing areas of mathematics ... -
Two-factor Heston model equipped with regime-switching: American option pricing and model calibration by Levenberg-Marquardt optimization algorithm
( Elsevier B.V. , 2023 , Article)In this paper, we consider the pricing of American options under a regime-switching double Heston model, such that the interest rate and mean-reversion level parameters in both stochastic volatility models shift in various ... -
Hermite-Hadamard type integral inequalities for multidimensional general h-harmonic preinvex stochastic processes
( Taylor and Francis Ltd. , 2022 , Article)In this paper, we introduce a new concept of preinvex functions which is called general h-harmonic preinvex for real-valued stochastic processes. Further, we define the multidimensional general h-harmonic preinvex stochastic ... -
A penalty decomposition algorithm for the extended mean-variance-CVaR portfolio optimization problem
( World Scientific , 2023 , Article)In this paper, we study mean-variance-Conditional Value-At-Risk (CVaR) portfolio optimization problem with short selling, cardinality constraint and transaction costs. To tackle its mixed-integer quadratic optimization ... -
Penalty ADM Algorithm for Cardinality Constrained Mean-Absolute Deviation Portfolio Optimization
( International Academic Press , 2022 , Article)In this paper, we study the cardinality constrained mean-absolute deviation portfolio optimization problem with risk-neutral interest rate and short-selling. We enhance the model by adding extra constraints to avoid investing ... -
On strongly generalized convex stochastic processes
( Taylor and Francis Ltd. , 2022 , Article)In this paper, we introduce the notion of strongly generalized convex functions which is called as strongly η-convex stochastic processes. We prove the Hermite-Hadamard, Ostrowski type inequality, and obtain some important ... -
Large-scale global optimization based on hybrid swarm intelligence algorithm
( IOS Press , 2020 , Article)There are numerous large-scale global optimization problems encountered in real-world applications including engineering, manufacturing, economics, networking fields. Over the last two decades different varieties of swarm ... -
A weighted version of Hermite-Hadamard type inequalities for strongly GA-convex functions
( Institute of Advanced Science Extension (IASE) , 2020 , Article)In this paper, we have established new weighted Hermite-Hadamard type inequalities for strongly GA-convex functions. Those findings are obtained by using geometric symmetry of continuous positive mappings and differentiable ... -
The common solutions of the split feasibility problems and fixed point problems
( Springer International Publishing , 2015 , Article)An extraordinary split problem, which can be regarded as a superimposition of the split feasibility problem and the split fixed point problem, is considered. A superimposed algorithm is presented. The analysis technique ... -
Optimal Production Planning Strategy for Deteriorating Items in Terms of Emission Tax, Pollution, and R&D Investment
( Springer Science and Business Media B.V. , 2018 , Conference)Firms are faced with the question of what policies to implement to ensure efficient abatement behavior? In this paper, we aim to determine the optimal production rate and the optimal investment rate in pollution abatement ... -
Entropy-Like Minimization Methods Based on Modified Proximal Point Algorithm
( University of Toronto Press Inc. , 2014 , Article)In this paper we introduce an extension of the proximal point algorithm proposed by Guler for solving convex minimization problems. This extension is obtained by substituting the usual quadratic proximal term by a class ...
