نتایج جستجو برای: stratified random sampling method was used

تعداد نتایج: 5979659  

Journal: :Distributed and Parallel Databases 2020

2013
Li Qiuying Luo Lei

Software reliability testing provided the necessary guarantee for improving software reliability level and estimation. The traditional method for generating software reliability test cases could be seen as a simple random sampling, which was randomly choosen according to the operational profile defined by Musa. The stratified sampling was well known as a complex but more accurate sampling appro...

2007
Zdeněk P. Bažant Sze-Dai Pang Miroslav Vořechovský Drahomı́r Novák

The paper presents a model that extends the stochastic finite element method to the modelling of transitional energetic–statistical size effect in unnotched quasibrittle structures of positive geometry (i.e. failing at the start of macro-crack growth), and to the low probability tail of structural strength distribution, important for safe design. For small structures, the model captures the ene...

2009
Iain A Macdonald

Sensitivity analysis is a key part of a comprehensive energy simulation study. Monte-Carlo techniques have been successfully applied to many simulation tools. Several sampling techniques have been proposed in the literature; however to date there has been no comparison of their performance for typical building simulation applications. This paper examines the performance of simple random, strati...

Journal: :زن در فرهنگ و هنر 0
داریوش رضاپور مربی، عضو هیئت علمی گروه علوم اجتماعی دانشگاه پیام نور، تهران، ایران حسن چنانی نسب دانشجوی دکتری جامعه شناسی دانشگاه مازندران رحمان باقری مربی، عضو هیئت علمی گروه علوم اجتماعی دانشگاه پیام نور، تهران، ایران

abstract: the purpose of this study is to investigate the relationship between socialization and gender identity between female students from the university of dezful payme noor. the methodology of this study was survey and used a questionnaire. population of this study was all female students at dezful payme noor university and 384 persons determined as the sample size with using lin table. th...

2006
Kuo Zhao Liang Hu Guannan Gong Meng Zhang Kexin Yang

Data collection mechanism is a crucial factor for the performance of intrusion detection system (IDS). Simple random sampling and Stratified random sampling techniques of statistics are introduced to the procedure of data collection for IDS, and formulas used to calculate the sample size of packets based on these sampling techniques are presented. The implementation of packets sampling is provi...

Journal: :Philosophy of Science 2022

Abstract Simple random-sampling resolutions of the raven paradox relevantly diverge from scientific practice. We develop a stratified model, yielding better fit and apparently rehabilitating simple random sampling as legitimate idealization. However, neither accommodates second concern, objection potential bias. third model that crucially invokes causal considerations, novel resolution handles ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم انسانی 1388

abstract the aim of this study was threefold: (1) to investigate the relationship between knowledge of semantic prosody and efl learners general language proficiency; (2) to examine the relationship between qualitative as well as quantitative knowledge of words, and (3) to compare the performance of efl learner on receptive and productive measures of semantic prosody. the study is based on a...

Journal: :مجله مطالعات جامعه شناختی جوانان 0
dariush rezapour tehran eshagh arjmand siahpoush andimeshk bahareh arjmand siahpoush dezful

aggression is universal behavior that can be seen in all cultures and the most common behavioral problems in adolescence and young adulthood which can cause discomfort and distress of adolescents and young people and those around them. this research aim to survey of some social and individual factors influencing the tendency to aggression among youth in deylam city. the methodology of this stud...

2012

In the United States, low marriage rates and high divorce rates among the poor have led policymakers to target this group for skillsand values-based interventions. The current research evaluated the assumptions underlying these interventions; specifically, the authors examined whether low-income respondents held less traditional values toward marriage, had unrealistic standards for marriage, an...

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