搜索结果: 46-60 共查到“知识库 理学 accuracy”相关记录90条 . 查询时间(0.297 秒)
On the Accuracy of the Wyner Model in Cellular Networks
Accuracy Wyner Model Cellular Networks
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2010/12/14
The Wyner model has been widely used to model and analyze cellular networks due to its simplicity and analytical tractability. Its key aspects include fixed user locations and the deterministic and ho...
Energy-preserving numerical schemes of high accuracy for one-dimensional Hamiltonian systems
geometric numerical integration long time numerical evolution
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2010/12/15
We present a class of non-standard numerical schemes which are modifications of the discrete gradient method. They preserve the energy integral exactly (up to the round-off error). The considered clas...
Status and accuracy of the Monte Carlo generators for luminosity measurements
Luminosity QED Bhabha scattering radiative corrections Monte Carlo NNLO calculations
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2010/5/7
The status and accuracy of the precision Monte Carlo generators used for luminosity measurements
at avour factories is reviewed. It is shown that, thanks to a considerable, long-term e ort in tuned c...
What can we learn from European continuous atmospheric CO2 measurements to quantify regional fluxes – Part 2: Sensitivity of flux accuracy to inverse setup
European continuous atmospheric CO2 measurements regional fluxes flux accuracy
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2010/8/12
An inverse model using atmospheric CO2 observations from a European network of stations to reconstruct daily CO2 fluxes and their uncertainties over Europe at 50 km resolution has been developed withi...
High-accuracy measurements of snow Bidirectional Reflectance Distribution Function at visible and NIR wavelengths——comparison with modelling results
High-accuracy measurements snow Bidirectional Reflectance Distribution Function NIR wavelengths
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2010/3/16
High-accuracy measurements of snow Bidirectional Reflectance Distribution Function (BRDF) were performed for four natural snow samples with a spectrogonio-radiometer in the 500–2600 nm wavelength rang...
A new diagnostic for the relative accuracy of Euler codes
Euler codes incompressible Euler equations
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2010/4/2
A procedure is suggested for testing the resolution and comparing the relative accuracy of numerical schemes for integration of the incompressible Euler equations.
Numerical versus analytical accuracy of the formulas for light propagation
Numerical versus analytical light propagation
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2010/3/19
Numerical integration of the differential equations of light propagation in the Schwarzschild metric shows that in some situations relevant for practical observations the well-known post-Newtonian sol...
Spatial Pattern of Uncertainties: An Accuracy Assessment of the TIGER Files
GIS Spatial data quality Inaccuracy TIGER files
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2009/12/3
This study discusses the ways how the positional accuracy of the TIGER files can be measured and spatially reported.Many people and companies use the address range of the TIGER files with the geocodin...
A Stochastic Iterative Amplitude Adjusted Fourier Transform algorithm with improved accuracy
AStochastic Iterative Amplitude Fourier Transform algorithm improved accuracy
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2009/11/9
A stochastic version of the Iterative Amplitude Adjusted Fourier Transform (IAAFT) algorithm is presented. This algorithm is able to generate so-called surrogate time series, which have the amplitude ...
Accuracy of Point Precipitation Measurements
Accuracy Point Precipitation Measurements
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2009/10/28
The normal-exposed Hellmann raingauge only catches about 85% of the true
precipitation on yearly basis. This is mainly due to aerodynamic effects. A
statistical model analysing the ratio of the dail...
Accuracy of Snowmelt Runoff Simulation
Accuracy Snowmelt Runoff Simulation
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2009/10/28
Results of runoff simulations from various basins using a snowmelt runoff
model were analyzed in order to predict the accuracy of simulations in future
applications of the model. It was found that t...
Technical Note: An assessment of the accuracy of the RTTOV fast radiative transfer model using IASI data
accuracy RTTOV fast radiative transfer model IASI data
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2009/9/23
IASI measurements of spectral radiances made between the 1st April 2008 and the 15th April 2008 are compared with simulations performed using the RTTOV fast radiative transfer model utilizing regressi...
On the Accuracy of Wind Observations made on Board Finnish Light-Ships
Accuracy Wind Observations Board Finnish Light-Ships
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2009/6/22
On the Accuracy of Wind Observations made on Board Finnish Light-Ships.
On the Accuracy of the Finnish Radiosonde
Accuracy Finnish Radiosonde
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2009/6/22
On the Accuracy of the Finnish Radiosonde.
On the Accuracy of Wind Measurements Made with the Radiotheodolite Used during the Swedish-Finnish-Swiss IGY Expedition to Spitzbergen
Accuracy Wind Measurements Radiotheodolite Used Swedish-Finnish-Swiss IGY Expedition Spitzbergen
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2009/6/19
On the Accuracy of Wind Measurements Made with the Radiotheodolite Used during the Swedish-Finnish-Swiss IGY Expedition to Spitzbergen.