نتایج جستجو برای: آلگوریتم em

تعداد نتایج: 306029  

Journal: :Global change biology 2017
Christopher W Fernandez Nhu H Nguyen Artur Stefanski Ying Han Sarah E Hobbie Rebecca A Montgomery Peter B Reich Peter G Kennedy

Rising temperatures associated with climate change have been shown to negatively affect the photosynthetic rates of boreal forest tree saplings at their southern range limits. To quantify the responses of ectomycorrhizal (EM) fungal communities associated with poorly performing hosts, we sampled the roots of Betula papyrifera and Abies balsamea saplings growing in the B4Warmed (Boreal Forest Wa...

2015
Riccardo Guidetti Luigi Bodria Rosnah Shamsudin Salihah Buang Norashikin A. Aziz

The present study was carried out to analyze the physico-chemical properties of fresh juice obtained from pomelo fruit. It is aimed to study the effects of different commercial extraction techniques on the physicochemical properties of the pomelo juice. The juices from Malaysian pomelo fruit from variety Tambun (PO52) were extracted using four different techniques; hand squeezing (EM-1), blendi...

2013
Mohd Lokman Che Jusoh Latifah Abd Manaf Puziah Abdul Latiff

This study aims to assess the effect of EM application on the composting process of rice straw with goat manure and green waste and to evaluate the quality of both compost treatments. There are two treatment piles in this study, in which one pile was applied with EM and another pile without EM. Each treatment was replicated three times with 90 days of composting duration. The parameters for the...

2015
Yuzhou Gu Fengling Chen Tao Liu Xiaojuan Lv Zhaoming Shao Hualiang Lin Chaobin Liang Weilin Zeng Jianpeng Xiao Yonghui Zhang Cunrui Huang Shannon Rutherford Wenjun Ma

Dozens of epidemic erythromelalgia (EM) outbreaks have been reported in China since the mid-twentieth century, and the most recent happened in Foshan City, Guangdong Province early 2014. This study compared the daily case counts of this recent epidemic EM outbreak from February 11 to March 3 with Baidu search data for the same period. After keyword selection, filtering and composition, the most...

2015
Suzanne Chantal van Veen Kevin van Schie Leoniek D. N. V. Wijngaards-de Meij Marianne Littel Iris M. Engelhard Marcel A. van den Hout

Eye movement desensitization and reprocessing (EMDR) is an efficacious treatment for post-traumatic stress disorder. In EMDR, patients recall a distressing memory and simultaneously make eye movements (EM). Both tasks are considered to require limited working memory (WM) resources. Because this leaves fewer resources available for memory retrieval, the memory should become less vivid and less e...

Journal: :Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 2009
Barbara J Fuhrman Ruth Pfeiffer Xia Xu Anna H Wu Larissa Korde Mitchell H Gail Larry K Keefer Timothy D Veenstra Robert N Hoover Regina G Ziegler

INTRODUCTION In Asian and Asian-American women, soy consumption is associated with reduced breast cancer risk, perhaps due to its effects on estrogen production or metabolism. In a sample of Asian-American women, we investigated the associations of usual adult soy intake with the urinary concentrations of 15 estrogens and estrogen metabolites (EM) measured using liquid chromatography-tandem mas...

Journal: :Arquivos brasileiros de cardiologia 2007
Antonio Eduardo Pesaro Elbio D'Amico Luis Fernando C Aranha

A dengue tem ampla distribuição em áreas tropicais, ocorrendo de forma endêmica e eventualmente epidêmica. É transmitida por mosquitos do gênero Aedes, principalmente Aedes aegypti, cuja distribuição e adaptação em ambientes urbanos e peridomiciliares explica a predominância da dengue em cidades. A doença ocorre com a introdução de paciente virêmico em ambiente onde há concentração suficiente d...

2003
Jun-ichi Inoue

Average case performance of the deterministic annealing EM algorithm is evaluated for Gaussian mixture estimation problem under some additive noises. The data-averaged EM update equations with respect to hyperparameters are calculated analytically in the large data limit. We find that the EM algorithm strongly depends on the initial conditions. Moreover, by using our analysis, it becomes possib...

2010
Andrew Lewandowski Chuanhai Liu Scott Vander Wiel

This EM review article focuses on parameter expansion, a simple technique introduced in the PX-EM algorithm to make EM converge faster while maintaining its simplicity and stability. The primary objective concerns the connection between parameter expansion and efficient inference. It reviews the statistical interpretation of the PX-EM algorithm, in terms of efficient inference via bias reductio...

Journal: :Methods 2016
Rebecca F Thompson Matt Walker C Alistair Siebert Stephen P Muench Neil A Ranson

Transmission electron microscopy (EM) is a versatile technique that can be used to image biological specimens ranging from intact eukaryotic cells to individual proteins >150kDa. There are several strategies for preparing samples for imaging by EM, including negative staining and cryogenic freezing. In the last few years, cryo-EM has undergone a 'resolution revolution', owing to both advances i...

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