Results 11 to 20 of about 2,463,068 (192)

A new approach to analysis of accumulation and enrichment of heavy metals in Danube River sediment along the Iron Gate reservoir in Serbia [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
Concentrations of heavy metals (Cu, Zn, Pb, Cd) and long-lived radionuclides (U, Th, Cs) along the Iron Gate reservoir of the River Danube in Serbia were determined. In years 2005-2009, water and sediments were sampled at six sites along 200 km of the
Vuković Živorad   +3 more
doaj   +1 more source

Probability Characteristics, Area Reduction, and Wind Directionality Effects of Extreme Pressure Coefficients of High-Rise Buildings

open access: yesApplied Sciences, 2021
Wind tunnel tests are carried out for the Commonwealth Advisory Aeronautical Research Council (CAARC) high-rise building with a scale of 1:400 in exposure categories D.
Shouke Li   +6 more
doaj   +1 more source

Spatial distribution of coefficients for determination of global radiation in Serbia [PDF]

open access: yesNuclear Technology and Radiation Protection, 2012
The aim of this paper is a creation of the spatial distribution of the corresponding coefficients for the indirect determination of global radiation using all direct measurements data of this shortwave radiation balance component in Serbia in the ...
Nikolić Jugoslav L.   +1 more
doaj   +1 more source

Angular distribution and rotations of frame in vector meson decays into lepton pairs [PDF]

open access: yes, 2010
We discuss how the angular distribution of lepton pairs from decays of vector mesons depends on the choice of reference frame, and provide a geometrical description of the transformations of the coefficients of the angular distribution.
Palestini, Sandro
core   +1 more source

Development of effective algorithms for calculating current distribution coefficients of an electric power system [PDF]

open access: yesE3S Web of Conferences
Calculations of steady-state modes of a complex electric power system are significantly simplified if we use the coefficients of distribution of the setting currents.
Akhmetbaev Dauren   +3 more
doaj   +1 more source

Modification of Roughness Coefficients of Water Distribution Network Using Optimization Method [PDF]

open access: yesرویکردهای نوین در مهندسی عمران, 2018
Due to the breadth and complexity of water distribution networks, modeling of these networks is essential for proper utilization and proper network management. Determination of network coefficients is the more importance in network modeling.
Hamid Azarvash, Mehdi Dini
doaj   +1 more source

Distribution dependent SDEs with singular coefficients [PDF]

open access: yesStochastic Processes and their Applications, 2019
Under integrability conditions on distribution dependent coefficients, existence and uniqueness are proved for McKean-Vlasov type SDEs with non-degenerate noise. When the coefficients are Dini continuous in the space variable, gradient estimates and Harnack type inequalities are derived.
Huang, Xing, Wang, Feng-Yu
openaire   +4 more sources

Distribution of the second virial coefficients of globular proteins [PDF]

open access: yes, 2002
George and Wilson [Acta. Cryst. D 50, 361 (1994)] looked at the distribution of values of the second virial coefficient of globular proteins, under the conditions at which they crystallise. They found the values to lie within a fairly narrow range.
  +6 more
core   +1 more source

Estimating Coefficient Distributions in Random Coefficient Regressions

open access: yesThe Annals of Statistics, 1992
The model is \(Y_ j=a+(b+j)x_ j+e_ j\), \(j=1,2,\dots\) where \(E(b_ j)=E(e_ j)=0\), the \(b_ 1,e_ 1,b_ 2,e_ 2,\dots\) are independent and \(\{b_ 1,b_ 2,\dots\}\) as well as \(\{e_ 1,e_ 2,\dots\}\) are i.i.d. The authors study the estimation of the distribution of \(b_ j\) and \(e_ j\), respectively, for resampling purposes.
Beran, Rudolf, Hall, Peter
openaire   +2 more sources

THE ALGORITHM FOR CORRECTING A MODE OF THE POWER SUPPLY SYSTEM THAT TAKES THE TRANSFORMATIONS AND HETEROGENEITY OF THE NETWORK INTO ACCOUNT

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2017
The problem of expeditious correction has great practical value for operation of the power supply system and is one of the most important and complex challenges of an automated control system of an electrical power system.
O. I. Alexandrov
doaj   +1 more source

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