Results 51 to 60 of about 166,859,727 (259)

Analysis of network behavior characteristic and influence factor based on the peak traffic

open access: yesTongxin xuebao, 2012
Based on the burstiness of network traffic,the peak traffic metric was introduced,and the method which was used to evaluate network operation and plan capacity was proposed.The network intrinsic features and the peak traffic for the 21 CERNET campus ...
Ai-ping ZHOU, Guang CHENG
doaj  

Attitude control precision analysis for hypersonic vehicles based on covariance analysis describing equation technique

open access: yesAdvances in Mechanical Engineering, 2018
This article investigates a control precision analysis based on covariance analysis describing equation technique for the generic hypersonic vehicle attitude tracking system. For a nominal generic hypersonic vehicle attitude system, a global sliding mode
Jianguo Guo, Xinming Wang, Jun Zhou
doaj   +1 more source

Fatigue Reliability Analysis of Wind Turbine Cast Components

open access: yesEnergies, 2017
The fatigue life of wind turbine cast components, such as the main shaft in a drivetrain, is generally determined by defects from the casting process.
Hesam Mirzaei Rafsanjani   +3 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

Statistical Procedures Used in Pretest-Posttest Control Group Design: A Review of Papers in Five Iranian Journals

open access: yesActa Medica Iranica
The pretest-posttest control group design is one of the most widely used quantitative experimental design models for evaluating the efficacy of programs, treatments, and interventions.
Nahid Dehghan Nayeri   +5 more
doaj   +1 more source

The hippocampal network model: A transdiagnostic metaconnectomic approach

open access: yesNeuroImage: Clinical, 2018
Purpose: The hippocampus plays a central role in cognitive and affective processes and is commonly implicated in neurodegenerative diseases. Our study aimed to identify and describe a hippocampal network model (HNM) using trans-diagnostic MRI data from ...
Eithan Kotkowski   +4 more
doaj   +1 more source

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

open access: yesAdvanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang   +2 more
wiley   +1 more source

A new class of nonseparable space-time covariance models [PDF]

open access: yes, 2008
The aim of this work is to construct nonseparable, stationary covariance functions for processes that vary continuously in space and time. Stochastic modeling of phenomena over space and time is important in many areas of applications such as ...
Fonseca, Thaís C. O., Steel, Mark F. J.
core  

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

open access: yesAdvanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz   +4 more
wiley   +1 more source

Canonical correlation analysis based on robust covariance matrix by using deterministic of minimum covariance determinant

open access: yesPartial Differential Equations in Applied Mathematics
Canonical correlation analysis (CCA) study the linear combinations between a two multivariate set of variable that have the maximum association among these two sets of variables. The main computation of the CCA is depend on the sample mean and covariance
Mufda Jameel Alrawashdeh   +3 more
doaj   +1 more source

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