نتایج جستجو برای: quantitative analysis methods

تعداد نتایج: 4265292  

2003
Tomasz A. Kowalewski T. A. Kowalewski

Properly designed validation experiments are necessary to establish a satisfactory level of confidence in simulation algorithms. In this review recent achievements in the measurement techniques used for monitoring macroscopic flow field features are presented. In particular, optical and electro-optical methods, for example thermography, tomography or particle image velocimetry, are reviewed and...

2009
Scott Martens

The first task of statistical computational linguistics, or any other type of datadriven processing of language, is the extraction of counts and distributions of phenomena. This is much more difficult for the type of complex structured data found in treebanks and in corpora with sophisticated annotation than for tokenized texts. Recent developments in data mining, particularly in the extraction...

2003
Michael G. Madden Alan G. Ryder

The automated identification and quantification of illicit materials using Raman spectroscopy is of significant importance for law enforcement agencies. This paper explores the use of Machine Learning (ML) methods in comparison with standard statistical regression techniques for developing automated identification methods. In this work, the ML task is broken into two sub-tasks, data reduction a...

Journal: :The Journal of pediatrics 2005
Bonny L Specker Eckhard Schoenau

O ver the past decade there have been an increasing number of published manuscripts dealing with pediatric bone mineral density (BMD). The reason for this interest is 2-fold. First, there is a belief that bone gained early in life is an important factor in determining the risk of osteoporosis later in life. Second, there is a desire to identify children who may benefit from drugs that are becom...

Journal: :American journal of nuclear medicine and molecular imaging 2017
Christopher Breault Jonathan Piper Abhinay D Joshi Sara D Pirozzi Aaron S Nelson Ming Lu Michael J Pontecorvo Mark A Mintun Michael D Devous

This study evaluated performance of a commercially available standardized software program for calculation of florbetapir PET standard uptake value ratios (SUVr) in comparison with an established research method. Florbetapir PET images for 183 subjects clinically diagnosed as cognitively normal (CN), mild cognitive impairment (MCI) or probable Alzheimer's disease (AD) (45 AD, 60 MCI, and 78 CN)...

2017
Yuxin He Jin Qin Jian Hong

An effective evaluation of transportation network efficiency could offer guidance for the optimal control of urban traffic. Based on the introduction and related mathematical analysis of three quantitative evaluation methods for transportation network efficiency, this paper compares the information measured by them, including network structure, traffic demand, travel choice behavior and other f...

Journal: :Remote Sensing 2016
Qinghua Xie J. David Ballester-Berman Juan M. Lopez-Sanchez Jianjun Zhu Changcheng Wang

In this paper, we analyze the robustness of the parameter inversion provided by general polarimetric model-based decomposition methods from the perspective of a quantitative application. The general model and algorithm we have studied is the method proposed recently by Chen et al., which makes use of the complete polarimetric information and outperforms traditional decomposition methods in term...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1387

چکیده: بررسی ادبیات مربوطه در کشور در زمینه یادگیری زبان انگلیسی نشان می‎دهد که علی‎رغم اهمیت املا در فرآیند یادگیری به طور عام و یادگیری زبان انگلیسی به طور خاص، این مولفه از جایگاهی متناسب با اهمیت آن برخوردار نیست و عمدتاً نادیده گرفته شده است. تحقیقات گسترده‎ای در خارج از کشور در مورد ماهیت این مولفه صورت گرفته است، در حالی که به جرأت می‎توان گفت در داخل کشور گامی در مورد درک ماهیت آن و فرآی...

Journal: :International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering 2014

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