نتایج جستجو برای: thermal moment

تعداد نتایج: 276522  

Journal: :desert 0
a.r. keshtkar assistant professor, international desert research center (idrc), university of tehran, tehran, iran a. salajegheh associate professor, faculty of natural resources, university of tehran, karaj, iran m. najafi hajivar msc. graduate, natural resources and watershed management office, koohrang, iran

statistical frequency analysis is the most common procedure for the analysis of flood data at a gauged location thatin first step it is needed to select a model to represent the population. among them, the central moment has been themost common and widely used, and with the using of computers, the application of the maximum likelihood hasincreased. this research was carried out in order to reco...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2011
Yeong-Ah Soh Ravi K Kummamuru

Magnetic domains and the walls between are the subject of great interest because of the role they play in determining the electrical properties of ferromagnetic materials and as a means of manipulating electron spin in spintronic devices. However, much less attention has been paid to these effects in antiferromagnets, primarily because there is less awareness of their existence in antiferromagn...

2016
Fuminao Kishimoto Masayuki Matsuhisa Shinichiro Kawamura Satoshi Fujii Shuntaro Tsubaki Masato M. Maitani Eiichi Suzuki Yuji Wada

Various microwave effects on chemical reactions have been observed, reported and compared to those carried out under conventional heating. These effects are classified into thermal effects, which arise from the temperature rise caused by microwaves, and non-thermal effects, which are attributed to interactions between substances and the oscillating electromagnetic fields of microwaves. However,...

2016
Patrick T. McCarthy Ernesto E. Marinero Timothy S. Fisher

We report the thermal behavior of gadolinium foils to be used in magneto thermoelectric generator cells. Magneto thermoelectric generator cell technology exploits the ferromagnetic phase transition of gadolinium to drive the movement of a diaphragm ‘shuttle’ whose mechanical energy is converted to electrical form and which enhances heat transfer through both conduction and convection. Efficient...

Journal: :Physical chemistry chemical physics : PCCP 2014
Christopher D Daub Per-Olof Åstrand Fernando Bresme

We use molecular dynamics simulations in applied thermal gradients to study thermomolecular orientation (TMO) of size-asymmetric dipolar dumbbells with different molecular dipole moments. We find that the direction of the TMO is the same as in apolar dumbbells of the same size, i.e. the smaller atom in the dumbbell tends to orient towards the colder temperature. The ratio of the electrical pola...

2014
Diana Bílková

Application of the method of moments for the parametric distribution is common in the construction of a suitable parametric distribution. However, moment method of parameter estimation does not produce good results. An alternative approach when constructing an appropriate parametric distribution for the considered data file is to use the so-called order statistics. This paper deals with the use...

2015
David Sternberg Todd F. Sheerin Gabriel Urbain

Most inspection and maintenance operations at the International Space Station (ISS) rely on astronaut extravehicular activities (EVAs). Autonomous or radio-controlled spacecraft that work in conjunction with astronauts could improve diagnostic and imaging capability during EVA missions. The Integrated Navigation Sensor Platform for EVA Control and Testing (INSPECT) system is a proposed testbed ...

Journal: :The British journal of radiology 1998
T W Redpath

in RF receiving coil design. However, modern is proportional to 0 , so that their population imaging techniques often demand very high speed difference is larger at high values of 0 . Since the and spatial resolution, so that the highest possible ratio of the energy difference to thermal energy is SNR is still required to avoid poor image quality. very small, the population difference increases...

2009
Michael Schlemmer Ingrid Hotz Bernd Hamann Hans Hagen

The analysis of time-dependent data is often guided by the question of how dominant structures develop over time. It is important to understand how patterns or structures identified for one time step evolve over time, by changing or moving in the domain. To gain insight into such evolving structural change it is crucial to effectively compare different time steps. This paper proposes a comparis...

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