Results 91 to 100 of about 29,659 (207)

Impact of granulation effects on the use of Balmer lines as temperature indicators

open access: yes, 2009
Balmer lines serve as important indicators of stellar effective temperatures in late-type stellar spectra. One of their modelling uncertainties is the influence of convective flows on their shape. We aim to characterize the influence of convection on the
Asplund   +20 more
core   +2 more sources

Sequential Design for Computer Experiments with a Flexible Bayesian Additive Model [PDF]

open access: yes, 2012
In computer experiments, a mathematical model implemented on a computer is used to represent complex physical phenomena. These models, known as computer simulators, enable experimental study of a virtual representation of the complex phenomena ...
Chipman, Hugh   +2 more
core  

LHD Thomson Scattering Diagnostics

open access: yesJournal of Fusion Energy
Abstract Thomson scattering diagnostic systems are widely used to measure the local electron temperature and density of plasmas, which are one of the most important plasma parameters. The Large Helical Device (LHD) Thomson scattering system was designed and developed from 1991 to 1998, and has been in operation without any major ...
Ichihiro Yamada   +6 more
openaire   +1 more source

Electron Density Profile Measurements on LHD

open access: yesIEEE Transactions on Plasma Science, 2003
Several kinds of density diagnostics have been developed and routinely operated to provide density profile information on the Large Helical Device. A 13-channel far-infrared laser interferometer and a two-color millimeter-wave interferometer are used for monitoring the density profile.
K. Kawahata   +8 more
openaire   +1 more source

Microwave Doppler reflectometer system in LHD

open access: yesReview of Scientific Instruments, 2012
In order to measure the poloidal rotation velocity, a Doppler reflectometer has been developed in Large Helical Device (LHD). A remotely controlled antenna tilting system has been installed in an LHD vacuum vessel. A synthesizer is used as the source, and the operation microwave frequency ranges are ka-band and V-band. In LHD last experimental campaign
T, Tokuzawa   +7 more
openaire   +2 more sources

低血红蛋白密度对铁缺乏状态的临床应用评价

open access: yesZhongguo shiyan zhenduanxue, 2017
目的探讨低血红蛋白密度(low hemoglobin density,LHD)对铁缺乏不同阶段的评价,明确LHD在不同病因贫血鉴别诊断的临床应用价值。方法回顾性分析2016年5月-2016年7月吉林大学第一医院就诊的铁缺乏、肾性贫血、肿瘤性贫血的低血红蛋白密度及铁代谢等检验结果,以同期我院健康体检者为对照组。比较实验组内(铁缺乏组、肾性贫血组、肿瘤性贫血组)及实验组间(健康体检组)LHD和铁代谢参数,比较LHD在不同阶段铁缺乏状态的水平,绘制各参数对铁缺乏评估的ROC曲线,分析LHD与铁代谢指标的相关性。
师传帅, 续薇
doaj  

Supplement to "What Model for Entry in First-Price Auctions? A Nonparametric Approach" [PDF]

open access: yes
The paper contains supplemental material for Marmer, Shneyerov, and Xu (2010) "What Model for Entry in First-Price Auctions? A Nonparametric Approach."
Marmer, Vadim, Shneyerov, Art, Xu, Pai
core  

Optimizing LHD utilization

open access: yes, 2011
The purpose of the project was to optimize load haul dump (LHD) machinery use as they were spending too much time doing what they should not be doing. During the investigation, the author found that the machine's actual availability was 86% and the utilization ranged between 30% and 42%.This shows that the availability of the machine has met its target.
openaire   +1 more source

Jump jets for the ADF? [PDF]

open access: yes
This report argues that the costs of Australia acquiring F-35B Joint Strike Fighter short take-off, vertical landing aircraft outweigh the potential benefits.
Benjamin Schreer, Richard Brabin-Smith
core  

What Model for Entry in First-Price Auctions? A Nonparametric Approach [PDF]

open access: yes
We develop a nonparametric approach that allows for discrimination among alternative models of entry in first-price auctions. Three models of entry are considered: those of Levin and Smith (1994), Samuelson (1985), and a new model in which the ...
Marmer, Vadim   +2 more
core  

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