نتایج جستجو برای: 0228geographical change ofwork placehoursfixed coefficient

تعداد نتایج: 750250  

ژورنال: علوم آب و خاک 2009

Monitoring Land Use and Land Cover Changes have a significant role in environmental programming and management. Satellite data is an essential tool for detecting and analyzing environmental changes. Many change detection techniques have been developed which have advantages or disadvantages. Change Vector Analysis (CVA) technique is one such a method. This method is based on radiometric changes ...

2004
C S Haworth P L Selby A K Webb L Martin J S Elborn L D Sharples J E Adams

Background: Proinflammatory cytokines stimulate osteoclast activity and this could lead to increased bone resorption in patients with cystic fibrosis. The aim of this study was to determine whether markers of systemic inflammation are related to changes in bone mineral content (BMC) in adults with cystic fibrosis. Methods: Total body BMC was assessed by dual energy x ray absorptiometry in 100 p...

Journal: :Physiotherapy Canada. Physiotherapie Canada 2012
Martin D Chisholm Trevor B Birmingham Janet Brown Joy Macdermid Bert M Chesworth

PURPOSE To examine reliability and validity of the Lunge Test (LT) of dorsiflexion range of motion and determine the impact of different approaches to obtain a score on these parameters. METHODS Fifty-three patients with ankle injury/dysfunction provided initial assessment data for cross-sectional convergent and known-groups validity analysis with the Pearson coefficient (r) and paired t-test...

Journal: :Applied optics 2010
Nico Lastzka Jessica Steinlechner Sebastian Steinlechner Roman Schnabel

We present a method for the measurement of small optical absorption coefficients. The method exploits the deformation of cavity Airy peaks that occur if the cavity contains an absorbing material with a nonzero thermorefractive coefficient dn/dT or a nonzero expansion coefficient α(th). Light absorption leads to a local temperature change and to an intensity-dependent phase shift, i.e., to a pho...

2013
Y asuro Ikuma Srinivasan Anandan Koichi Niwa

The results of x-ray diffraction, the size of lattice parameter, and the values of oxygen diffusion coefficient in YOu-Ce02 , Gd0u-Ce02 , and Nd01.5-Ce02 systems were reviewed. In YOu-Ce02 system, the lattice parameter decreases as the concentration of YOu increases. In Gd0u-Ce02 system, the lattice parameter does not change very much. And in Nd0u-Ce02 system, it increases as the concentration ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2008
Patrick Oswald Alain Dequidt

We show that the continuous cholesteric fingers, which form in homeotropic samples at the unwinding temperature of the cholesteric phase, drift and spiral when they are subjected to a temperature gradient. This phenomenon is attributed to the appearance of a Lehmann thermomechanical torque. Measurements of the finger drift velocity on both sides of the compensation temperature of a cholesteric ...

2002
Yan Zhang Gehang Zeng Rajeev Singh James Christofferson Edward Croke John E. Bowers Ali Shakouri

Seebeck coefficient is one of the key parameters to evaluate the performance of thermoelectric coolers. However, it is very difficult to directly measure Seebeck coefficient perpendicular to thin film devices because of the difficulty of creating a temperature gradient and measuring localized temperature and voltage change simultaneously. In this paper, a novel method is described and it is use...

2004

Kendall Rank Correlation Let (X1, Y1), · · · , (Xn, Yn) be a bivariate random sample of size n. The Pearson correlation coefficient provides an optimal measure of the degree of association between the X’s and the Y ’s when the sample is drawn from a bivariate normal distribution. The Pearson correlation coefficient is reasonably robust for many other distributions as well. The Kendall correlati...

2008
Xingye Zhu Shouqi Yuan Hong Li Junping Liu

The Complete fluidic sprinkler was originally created by China. Irrigation uniformity in no-wind conditions was studied in this paper. Radial water distribution for complete fluidic sprinkler type 10 was got by experiment. MATLAB was used to establish computation program to change the radial data into net data. Three-dimensional water distribution figures for single sprinkler and combined sprin...

Journal: :Huan jing ke xue= Huanjing kexue 2009
Hui Liu Tao Huang Chi Zhang

Refuse degradation and landfill leachate treatment are the main research directions of landfill technology at present, but permeability characteristics of landfill body are paid little attention on. According to this actuality, the study selected four kinds of landfill's bodies under different pressures as study objects and tested the permeability characteristics in the stage of main compressio...

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