Results 11 to 20 of about 2,123,374 (298)

The method for determination of parameters of the phenomenological continual model of soil organic matter transformation [PDF]

open access: yesСибирский лесной журнал, 2015
A possible method for experimental determination of parameters of the previously proposed continual mathematical model of soil organic matter transformation is theoretically considered in this paper. The previously proposed by the authors continual model
S. I. Bartsev, A. A. Pochekutov
doaj   +1 more source

Design Method for Electromagnetic Cloak with Arbitrary Shapes Based on Laplace's Equation [PDF]

open access: yes, 2008
In transformation optics, the space transformation is viewed as the deformation of a material. The permittivity and permeability tensors in the transformed space are found to correlate with the deformation field of the material.
Hu, Gengkai, Hu, Jin, Zhou, Xiaoming
core   +1 more source

Analysis of Scaling Parameters of the Batch Unscented Transformation for Precision Orbit Determination using Satellite Laser Ranging Data [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2011
The current study analyzes the effects of the scaling parameters of the batch unscented transformation on precision satellite orbit determination. Satellite laser ranging (SLR) data are used in the orbit determination algorithm, which consists of ...
Jae-Hyuk Kim   +7 more
doaj   +1 more source

Occurrence and transformation of veterinary pharmaceuticals and biocides in manure: a literature review [PDF]

open access: yes, 2016
The spread of veterinary medicinal products (VMPs) and biocides via manure onto agriculturally used areas represents a very important emission into the environment for these product groups.
Berkner, Silvia   +5 more
core   +1 more source

Accuracy of geodetic coordinates using Helmert transformation algorithm

open access: yesGeodesy and Cartography, 2012
Accuracy of geodetic coordinates transformed from one coordinate system to another is analysed in the publication. Values for transformation parameters are computed using the least-squares method.
Jonas Skeivalas
doaj   +1 more source

WTLS iterative algorithm of 3D similarity coordinate transformation based on Gibbs vectors

open access: yesEarth, Planets and Space, 2020
The 3D similarity coordinate transformation is fundamental and frequently encountered in many areas of work such as geodesy, engineering surveying, LIDAR, terrestrial laser scanning, photogrammetry, machine vision, etc.
Huaien Zeng   +3 more
doaj   +1 more source

Transformation between polar and rectangular coordinates of stiffness and dampness parameters in hydrodynamic journal bearings

open access: yesFriction, 2020
The stiffness and dampness parameters of journal bearings are required in rectangular coordinates for analyzing the stability boundary and threshold speed of oil film bearings.
Zhuxin Tian, Yu Huang
doaj   +1 more source

Study on systematic errors of BDS-3 broadcast ephemeris and their effects with Helmert transformation

open access: yesSatellite Navigation, 2023
Previous studies have not evaluated the systematic errors implied in the third generation of BeiDou-3 Navigation Satellite System (BDS-3) broadcast ephemeris.
Min Li   +4 more
doaj   +1 more source

Accuracy of 3D geodetic coordinates transformation algorithms

open access: yesGeodesy and Cartography, 2012
Accuracy of 3D geodetic coordinates transformed from one coordinate system to another is analysed. Values of transformation parameters are computed by least-squares adjustment method.
Jonas Skeivalas
doaj   +1 more source

Determination of the relationship between Vietnam national coordinate reference system (VN-2000) and ITRS, WGS84 and PZ-90 [PDF]

open access: yesE3S Web of Conferences, 2019
In July 2000, Hanoi-72 reference system was replaced by the Vietnam reference system, namely as VN-2000 as an official geodetic background system in Vietnam.
Pham Thi Hoa   +4 more
doaj   +1 more source

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