Results 11 to 20 of about 22,422,719 (302)

Improved hydrogeophysical characterization using joint inversion of cross-hole electrical resistance and ground-penetrating radar traveltime data. [PDF]

open access: yes, 2006
Appropriate regularizations of geophysical inverse problems and joint inversion of different data types improve geophysical models and increase their usefulness in hydrogeological studies.
Revil, Andre   +7 more
core   +5 more sources

The accurate numerical inversion of laplace transforms [PDF]

open access: yes, 1976
Inversion of almost arbitrary Laplace transforms is effected by trapezoidal integration along a special contour. The number n of points to be used is one of several parameters, in most cases yielding absolute errors of order 10-7 for n = 10, 10-11 for n
Tablot, A
core   +6 more sources

Data-driven acoustic impedance inversion with reweighted L1 norm sparsity constraint

open access: yesFrontiers in Earth Science, 2023
Acoustic impedance (AI) inversion is widely used in geophysics and reservoir prediction. But the traditional impedance inversion method cannot fully exploit the sparse characteristics of geological attributes. There are problems with multiplicity and low
Lian Zhao   +7 more
doaj   +1 more source

Analysis of Electron Mobility in Inversion-Mode Al2O3/InxGa1-xAs MOSFETs [PDF]

open access: yes, 2011
The electron mobility in Al2O3/InxGa1-xAs (x = 0.53, 0.65, or 0.75) metal-oxide-semiconductor field-effect transistors was analyzed for scattering by oxide charge, as well as interface charge and roughness, and compared with measured transfer ...
Xuan, Yi   +7 more
core   +1 more source

Statistical analysis of temperature inversion and its types in Birjand city using by inversion intensity index [PDF]

open access: yesکاوش‌های جغرافیایی مناطق بیابانی, 2023
Statistical analysis of temperature inversion and its types in Birjand city using by inversion intensity indexIntroductionThe ambient air temperature in the troposphere usually decreases with increased altitude (per 1000 meters increases the height of 5 ...
Zeynab Dolatshahi   +3 more
doaj   +1 more source

Back analysis of dynamic parameters of high earth-rock dam materials under weak earthquakes

open access: yesYantu gongcheng xuebao, 2020
In the case of weak earthquakes, a back analysis model considering interaction and radiation damping effects is proposed for dynamic parameters of earth-rock dams.
WANG Mao-hua 1, 2, CHI Shi-chun 1, 2, XIANG Biao 3, ZHOU Xiong-xiong 1, 2
doaj   +1 more source

ANALYSIS OF AN INVERSE PROBLEM ARISING IN PHOTOLITHOGRAPHY [PDF]

open access: yesMathematical Models and Methods in Applied Sciences, 2012
We consider the inverse problem of determining an optical mask that produces a desired circuit pattern in photolithography. We set the problem as a shape design problem in which the unknown is a two-dimensional domain. The relationship between the target shape and the unknown is modeled through diffractive optics.
RONDI, LUCA, Santosa F.
openaire   +6 more sources

The benefits of investing into improved carbon flux monitoring

open access: yesCogent Economics & Finance, 2016
Operationalizing a Global Carbon Observing and Analysis System (www.geocarbon.net) would provide a sound basis for monitoring actual carbon fluxes and thus getting quantities right when pricing carbon – be it in a cap-and-trade scheme or under a tax ...
J. Szolgayová   +6 more
doaj   +1 more source

ANALISIS KANDUNGAN GULA REDUKSI PADA GULA SEMUT DARI NIRA AREN YANG DIPENGARUHI pH DAN KADAR AIR

open access: yesBioedukasi: Jurnal Pendidikan Biologi FKIP UM Metro, 2021
This research was conducted at the UPT Health Laboratory of East Nusa Tenggara Province, Kelapa Lima District, Kupang City from August to September.
Naja wilberta   +2 more
doaj   +1 more source

Lossy transmission line response via numerical Laplace transform inversion [PDF]

open access: yes, 1994
An efficient transient analysis of lossy lines with nonlinear loads requires the ability to compute and represent a suitable set of line impulse responses.
F.G. Canavero   +3 more
core   +1 more source

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