نتایج جستجو برای: multi stage sampling

تعداد نتایج: 992420  

Journal: :Transactions of the Society of Instrument and Control Engineers 1993

2017
Yuguang Liu Martin D. Levine

Large-scale variations still pose a challenge in unconstrained face detection. To the best of our knowledge, no current face detection algorithm can detect a face as large as 800 × 800 pixels while simultaneously detecting another one as small as 8 × 8 pixels within a single image with equally high accuracy. We propose a two-stage cascaded face detection framework, Multi-Path Region-based Convo...

Fatemeh Talebzadeh Maryam Abrahimian Mohammad Talebzadeh,

Objective: The present study aimed to compare mental health of female athlete and non-athlete students in the city of Indica. The research methodology was a descriptive survey, which initially described the mental health and then compared it among the students. Methods: The statistical population of the study included all high school girls in the academic year of 2012-2013 in the city of Indica...

پایان نامه :دانشگاه آزاد اسلامی واحد علوم پزشکی تهران - دانشکده پزشکی 1390

هدف: در این مطالعه به بررسی ارتباط ki-67 با stage سرطان سینه در بیمارستان بوعلی طی سالهای 90-1389 پرداختیم. روش مطالعه: در این مطالعه توصیفی – تحلیلی مقطعی، 144 نفر از مراجعین به بیمارستان بوعلی از سال 89 تا 90 مورد بررسی قرار گرفتند که به صورت در دسترس انتخاب و وارد مطالعه شدند. یافته ها: ki-67 در 9/81 درصد از بیماران مثبت بود. stageتومور در 4/26 درصد یک، در 2/47 درصد دو و در 4/26 درصد سه بو...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده فنی و مهندسی 1387

abstract biometric access control is an automatic system that intelligently provides the access of special actions to predefined individuals. it may use one or more unique features of humans, like fingerprint, iris, gesture, 2d and 3d face images. 2d face image is one of the important features with useful and reliable information for recognition of individuals and systems based on this ...

A new Multi-Stage Fuzzy (MSF) controller based on Multi-objective Harmony Search Algorithm (MOHSA) is proposed in this paper to solve the Load Frequency Control (LFC) problem of power systems in deregulated environment. LFC problem are caused by load perturbations, which continuously disturb the normal operation of power system. The objectives of LFC are to mini small size the transient deviati...

Journal: :Proceedings of the AAAI Conference on Artificial Intelligence 2020

2010
Tsung-Hau Jen Hak-Ping Tam Margaret Wu

The precision of parameters estimation are determined by the sample size and the sampling design used in a study. Due to such practical constraints as the budget and manpower, most large-scale educational studies would not adopt the simple random sampling design. TIMSS 2007 used a two-stage stratified cluster sampling design. In the first stage, about 150 schools were selected according to some...

Journal: :Advances in neural information processing systems 2012
Pinghua Gong Jieping Ye Changshui Zhang

Multi-task sparse feature learning aims to improve the generalization performance by exploiting the shared features among tasks. It has been successfully applied to many applications including computer vision and biomedical informatics. Most of the existing multi-task sparse feature learning algorithms are formulated as a convex sparse regularization problem, which is usually suboptimal, due to...

Journal: :international journal of advanced design and manufacturing technology 0
sadegh rahmati ali khani

in this paper, multi-stage optimum design of composite pressure vessels is presented. the design variables for composite vessels include the head shape, the winding angle, the layer thickness, the number of layers, and the stacking sequence. a parameter called modified shape factor is introduced as an objective function. this parameter takes into account the effects of the internal pressure and...

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