نتایج جستجو برای: آلگوریتم em

تعداد نتایج: 306029  

2012
H. E. Wilhelm

By means of the generalized Galilei covariant EM field equations, the EM potentials and EM fields of a charged particle moving with an arbitrary nonuniform velocity v(t) in an inertial frame with substratum flow w are calculated. It is shown that the dynamic EM fields are excitations of the EM ether caused by the motion v(t) — w of the charge relative to the wave carrier with velocity w. Qualit...

2014
Andréa Januario da Silva Luiz Antônio Tavares Neves Jaqueline da Silva Frônio Luiz Cláudio Ribeiro

1 Programa de Pós-Graduação em Saúde Coletiva, Faculdade de Medicina, Universidade Federal de Juiz de Fora, UFJF; Núcleo Interdisciplinar de Estudos do Desenvolvimento Infantil NIEDI, Faculdade de Fisioterapia, UFJF; 3Núcleo de Assessoria, Treinamento e Estudos em Saúde NATES, UFJF, Juiz de Fora, MG, Brasil. 2 Mestre em Saúde Coletiva (UFJF), Departamento de. Saúde Coletiva Faculdade de Medicin...

2007
Mingfeng Wang Masahiro Kuroda Michio Sakakihara Zhi Geng

The Expectation-Maximization (EM) algorithm is a very general and popular iterative computational algorithm to find maximum likelihood estimates from incomplete data and broadly used to statistical analysis with missing data, because of its stability, flexibility and simplicity. However, it is often criticized that the convergence of the EM algorithm is slow. The various algorithms to accelerat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده ریاضی 1393

یکی از روش های برآورد پارامترها بعد از مشاهده، روش ماکسیمم درستنمایی است. اگر بردار مشاهدات غیرکامل باشد. یعنی، برخی از داده ها به دلیل سانسور شدن یا مقاذیر گمشده در دسترس نباشند، می توان از روش های تکرارشونده همچون روش نیوتن-رافسون و الگوریتم امید ریاضی بیشینه سازی یا به اختصار الگوریتم em برای برآورد پارامترها استفاده کرد.

Journal: :Pain physician 2015
Xiao-Hui Zhao Ya-Qun Zhao Chao Zhu Lei Chen Wei Hu Ting Zhang Yu-Lin Dong Sheng-Xi Wu Alan David Kaye Wen Wang Yun-Qing Li

Hormone replacement remains one of the common therapies for menopause-related pain but is associated with risk of orofacial or back pain. Spinal endomorphin-2 (EM-2) is involved in varied pain and its release is steroid-dependent, but whether increasing spinal EM-2 can inhibit thermal hyperalgesia and inflammatory pain in ovariectomized (OVX) female rats, an animal model mimicking menopause, is...

2015
Tao Liu Yonghui Zhang Hualiang Lin Xiaojuan Lv Jianpeng Xiao Weilin Zeng Yuzhou Gu Shannon Rutherford Shilu Tong Wenjun Ma

Although erythromelalgia (EM) has been documented in the literature for almost 150 years, it is still poorly understood. To overcome this limitation, we examined the spatial distribution of epidemic EM, and explored the association between temperature fluctuation and epidemic EM outbreaks in China. We searched all peer-reviewed literature on primary epidemic EM outbreaks in China. A two-stage m...

2013
Carol L Hodgson Sue Berney Megan Harrold Manoj Saxena Rinaldo Bellomo

Early mobilization (EM) of ICU patients is a physiologically logical intervention to attenuate critical illness-associated muscle weakness. However, its long-term value remains controversial. We performed a detailed analytical review of the literature using multiple relevant key terms in order to provide a comprehensive assessment of current knowledge on EM in critically ill patients. We found ...

Journal: :The Journal of pharmacology and experimental therapeutics 2005
Maia Terashvili Hsiang-En Wu Randy J Leitermann Han-Sen Sun Andrew D Clithero Leon F Tseng

The effects of pretreatment with endomorphin-1 (EM-1) and endomorphin-2 (EM-2) given into the ventral periaqueductal gray (vPAG) to induce antianalgesia against the tail-flick (TF) inhibition produced by morphine given into the vPAG were studied in rats. Pretreatment with EM-1 (3.5-28 nmol) given into vPAG for 45 min dose-dependently attenuated the TF inhibition produced by morphine (9 nmol) gi...

Journal: :CJEM 2011
Morgan Hillier Shelley McLeod Danny Mendelsohn Bradley Moffat Audra Smallfield Akram Arab Ashley Brown Robert Sedran

OBJECTIVES The objective of this study was to assess medical students' knowledge of and attitudes toward the two Canadian emergency medicine (EM) residency programs (Fellow of the Royal College of Physicians of Canada [FRCPC] and Certificant of the College of Family Physicians-Emergency Medicine [CCFP-EM]). Additionally, medical students interested in EM were asked to select factors affecting t...

2010
André C. Hora Clodoveu A. Davis Mirella M. Moro

Resumo. Dados representados em documentos GML são utilizados em diversas aplicações GIS e na Web visando principalmente o armazenamento, a manipulação e a troca de informações geográficas. Entretanto, uma grande parte das informações geográficas estão armazenadas em bancos de dados espaciais. Este trabalho apresenta uma metodologia para mapear dados geográficos, estruturados usando relacionamen...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید