A critical evaluation of asymptotic sampling method for highly safe structures

2021 ◽  
Author(s):  
Gamze Bayrak ◽  
Erdem Acar
Keyword(s):  
Sampling Method ◽  
Critical Evaluation ◽  
Asymptotic Sampling

scholarly journals PROBABILISTIC FINITE ELEMENT STIFFNESS OF A LATERALLY LOADED MONOPILE BASED ON AN IMPROVED ASYMPTOTIC SAMPLING METHOD

2015 ◽  
Vol 21 (4) ◽  
pp. 503-513 ◽  
Author(s):  
Mohammad Javad Vahdatirad ◽  
Mehdi Bayat ◽  
Lars Vabbersgaard Andersen ◽  
Lars Bo Ibsen
Keyword(s):  
Finite Element ◽  
Probability Distribution ◽  
Sampling Method ◽  
Stochastic Approach ◽  
Undrained Shear Strength ◽  
Finite Element Scheme ◽  
Random Field Theory ◽  
Mechanical Responses ◽  
Laterally Loaded ◽  
Asymptotic Sampling

The mechanical responses of an offshore monopile foundation mounted in over-consolidated clay are calculated by employing a stochastic approach where a nonlinear p–y curve is incorporated with a finite element scheme. The random field theory is applied to represent a spatial variation for undrained shear strength of clay. Normal and Sobol sampling are employed to provide the asymptotic sampling method to generate the probability distribution of the foundation stiffnesses. Monte Carlo simulation is used as a benchmark. Asymptotic sampling accompanied with Sobol quasi random sampling demonstrates an efficient method for estimating the probability distribution of stiffnesses for the offshore monopile foundation.

Parameter Study of Asymptotic Sampling for Truss Structures Reliability

2014 ◽  
Vol 969 ◽  
pp. 288-293 ◽  
Author(s):  
Adéla Hlobilová ◽  
Matěj Lepš
Keyword(s):  
Sampling Method ◽  
Optimal Parameter ◽  
Latin Hypercube Sampling ◽  
High Sensitivity ◽  
Truss Structures ◽  
Parameter Study ◽  
Asymptotic Results ◽  
New Techniques ◽  
Simulation Techniques ◽  
Asymptotic Sampling

Sampling methods for predicting a reliability index such as Monte Carlo or Latin Hypercube Sampling are very time consuming thus advanced simulation techniques are frequently used. The asymptotic sampling is one of new techniques based on asymptotic results from reliability theory supported with a simple regression. Since the high sensitivity of the asymptotic sampling method to the control parameters has been reported, this contribution is focused on a study of the optimal parameter setting. The well-known truss structure is introduced and results with different parameter settings are presented.

Design of the mammalian respiratory system. IV. Morphometric estimation of pulmonary diffusing capacity; Critical evaluation of a new sampling method

1981 ◽  
Vol 44 (1) ◽  
pp. 39-59 ◽  
Author(s):  
Ewald R. Weibel ◽  
Peter Gehr ◽  
Luis M. Cruz-Orive ◽  
Alfred E. Müller ◽  
Deter K. Mwangi ◽  
...  
Keyword(s):  
Respiratory System ◽  
Sampling Method ◽  
Critical Evaluation ◽  
Diffusing Capacity ◽  
Pulmonary Diffusing Capacity

Electron Microscopy of Metal-Matrix Composites

1970 ◽  
Vol 28 ◽  
pp. 404-405
Author(s):  
A. Lawley ◽  
M. R. Pinnel ◽  
A. Pattnaik
Keyword(s):  
Electron Microscopy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Critical Evaluation ◽  
Elastic Behavior ◽  
Matrix Composites ◽  
Directionally Solidified ◽  
Fracture Characteristics ◽  
Broad Program

As part of a broad program on composite materials, the role of the interface on the micromechanics of deformation of metal-matrix composites is being studied. The approach is to correlate elastic behavior, micro and macroyielding, flow, and fracture behavior with associated structural detail (dislocation substructure, fracture characteristics) and stress-state. This provides an understanding of the mode of deformation from an atomistic viewpoint; a critical evaluation can then be made of existing models of composite behavior based on continuum mechanics. This paper covers the electron microscopy (transmission, fractography, scanning microscopy) of two distinct forms of composite material: conventional fiber-reinforced (aluminum-stainless steel) and directionally solidified eutectic alloys (aluminum-copper). In the former, the interface is in the form of a compound and/or solid solution whereas in directionally solidified alloys, the interface consists of a precise crystallographic boundary between the two constituents of the eutectic.

Critical evaluation of permeation enhancers for oral mucosal drug delivery

2009 ◽  
Vol 00 (00) ◽  
pp. 090810030148087-29
Author(s):  
Harmik Sohi ◽  
Alka Ahuja ◽  
Farhan Jalees Ahmad ◽  
Roop Krishen Khar
Keyword(s):  
Drug Delivery ◽  
Critical Evaluation ◽  
Permeation Enhancers ◽  
Mucosal Drug Delivery

An Empirical Analysis of the Obtrusiveness of and Participants' Compliance with the Electronically Activated Recorder (EAR)

2007 ◽  
Vol 23 (4) ◽  
pp. 248-257 ◽  
Author(s):  
Matthias R. Mehl ◽  
Shannon E. Holleran
Keyword(s):  
Empirical Analysis ◽  
Sampling Method ◽  
Daily Life ◽  
Assessment Method ◽  
Data Confidentiality ◽  
Short Term ◽  
Naturally Occurring ◽  
Two Samples ◽  
Audio Recorder ◽  
Term Monitoring

Abstract. In this article, the authors provide an empirical analysis of the obtrusiveness of and participants' compliance with a relatively new psychological ambulatory assessment method, called the electronically activated recorder or EAR. The EAR is a modified portable audio-recorder that periodically records snippets of ambient sounds from participants' daily environments. In tracking moment-to-moment ambient sounds, the EAR yields an acoustic log of a person's day as it unfolds. As a naturalistic observation sampling method, it provides an observer's account of daily life and is optimized for the assessment of audible aspects of participants' naturally-occurring social behaviors and interactions. Measures of self-reported and behaviorally-assessed EAR obtrusiveness and compliance were analyzed in two samples. After an initial 2-h period of relative obtrusiveness, participants habituated to wearing the EAR and perceived it as fairly unobtrusive both in a short-term (2 days, N = 96) and a longer-term (10-11 days, N = 11) monitoring. Compliance with the method was high both during the short-term and longer-term monitoring. Somewhat reduced compliance was identified over the weekend; this effect appears to be specific to student populations. Important privacy and data confidentiality considerations around the EAR method are discussed.

Emotional Variability Predicts Tiredness in Daily Life

2016 ◽  
Vol 37 (3) ◽  
pp. 181-193 ◽  
Author(s):  
Aire Mill ◽  
Anu Realo ◽  
Jüri Allik
Keyword(s):  
Sampling Method ◽  
Daily Life ◽  
Emotional Experience ◽  
Experience Sampling ◽  
Experience Sampling Method ◽  
Building Blocks ◽  
Intraindividual Variability ◽  
Unique Role ◽  
Over Time

Abstract. Intraindividual variability, along with the more frequently studied between-person variability, has been argued to be one of the basic building blocks of emotional experience. The aim of the current study is to examine whether intraindividual variability in affect predicts tiredness in daily life. Intraindividual variability in affect was studied with the experience sampling method in a group of 110 participants (aged between 19 and 84 years) during 14 consecutive days on seven randomly determined occasions per day. The results suggest that affect variability is a stable construct over time and situations. Our findings also demonstrate that intraindividual variability in affect has a unique role in predicting increased levels of tiredness at the momentary level as well at the level of individuals.

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