نتایج جستجو برای: cloudiness

تعداد نتایج: 787  

Journal: :Polar Biology 2022

Abstract The summer climate in Maritime Antarctica is characterised by high humidity and cloudiness with slightly above zero temperatures. Under such conditions, photosynthetic activity temperature-limited plant communities are formed a few species. These conditions could prevent the operation of photoprotective xanthophyll (VAZ) cycle as low irradiance reduces excess energy temperatures limit ...

2000
Elena Savelieva Alexey Kravetski Sergey Chernov Vasiliy V. Demyanov Vadim Timonin Rafael V. Arutyunyan Leonid Aleksandrovich Bolshov Mikhail F. Kanevski

$EVWUDFW The work is devoted to an application of artificial neural network (multilayer perceptron) and conditional stochastic simulations to electricity load forecasting in Russia. One of the problems is missing data and some important weather parameters (wind, cloudiness, precipitation, historical information). This gives rise to rather large forecasting errors with complex statistical struct...

2009
Uri Simonsohn

Does current utility bias predictions of future utility for high stakes decisions? Here I provide field evidence consistent with such Projection Bias in one of life’s most thought-about decisions: college enrolment. After arguing and documenting with survey evidence that cloudiness increases the appeal of academic activities, I analyse the enrolment decisions of 1,284 prospective students who v...

Journal: :Science 2000
A P Showman T E Dowling

Large-scale nonlinear simulations of Jupiter's 5-micron hot spots produce long-lived coherent structures that cause subsidence in local regions, explaining the low cloudiness and the dryness measured by the Galileo probe inside a hot spot. Like observed hot spots, the simulated coherent structures are equatorially confined, have periodic spacing, propagate west relative to the flow, are general...

1995
Nelson Max Roger Crawfis

This paper discusses scientific visualization of scalar and vector fields, particularly relating to clouds and climate modeling. One cloud rendering method applies a 3-D texture to cloudiness contour surfaces, to simulate a view from outer space. The texture is advected by the wind flow, so that it follows the cloud motion. Another technique simulates multiple scattering of incident light from ...

2010

Extraction of lenses for cataract surgery is one of the most frequent outpatient surgical procedures; more than three million cases are performed annually in the United States. Phacoemulsification is the commonly used method for cataract extraction. Phacoemulsification systems (also known as phacoemulsifiers, cataract extraction units, or simply, phaco units) apply high-frequency oscillations t...

Journal: :Thorax 1986
H Yeo T Doyle R Saynor G H Smith

After observations of cloudiness in the perfusion circuit at open intracardiac operations, laboratory experiments showed a precipitate in a Hartmann's solution (compound sodium lactate solution, Ringer-lactate) and sodium bicarbonate based priming fluid used for cardiopulmonary bypass. The precipitate was found to consist of calcium carbonate crystals. The crystals were not dissolved by adding ...

Journal: :Real-Time Imaging 1999
Joachim Weickert

loudiness constitutes an important quality parameter of nonwoven fabrics. We show that Cit can be graded using a specific Laplacian pyramid decomposition which has to be modified at the boundaries. An algorithm is presented which calculates a quality measure as a weighted mean of the variances at all pyramid levels, where the weights are adapted to the human perception of cloudiness. The obtain...

2012
Petr DVORAK Milos MAZANEK Stanislav ZVANOVEC

Specific utilization of a microwave radiometer for online monitoring, detection and, especially, prediction of particular dynamic atmospheric phenomena such as precipitation and cloudiness is proposed in the paper. The ground-based microwave radiometer and meteorological stations were incorporated into the measurement campaign in order to observe and analyze actual brightness temperature change...

2006
Topi Mäenpää

Surface properties such as cloudiness and granularity can not be easily measured in a quantitative way. Traditional computer vision methods such as thresholding-based object feature detectors do not provide sufficiently reliable information. On the other hand, most texture analysis methods are overwhelmingly complex and slow. This paper presents a technique that uses statistical texture measure...

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