Results 61 to 70 of about 1,686,769 (280)

Extension of Kirchhoff method under stationary phase approximation to determination of polarimetric thermal emission from the sea [PDF]

, 1998
Wind direction over the sea can be determined from radiometric measurements of the third Stokes parameter (TU). The Kirchhoff method is extended under the stationary phase approximation to compute the dependence of TU on frequency, wind speed and ...
Rius Casals, Juan Manuel, Camps Carmona, Adriano José, Corbella Sanahuja, Ignasi   +2 more
core   +2 more sources

Kirchhoff, A[dolf] an Herman Grimm (1 Brief)

, 1884
KIRCHHOFF, A[DOLF] AN HERMAN GRIMM (1 BRIEF) Kirchhoff, A[dolf] an Herman Grimm (1 Brief) (Br3485) Brief 3485 ...
Kirchhoff, Adolf, Grimm, Herman
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Kirchhoff-type problems with the non-local fractional d ( z , . ) $\mathrm{d}(\mathrm{z},.)$ -Laplacian operator

Journal of Inequalities and Applications
In this work, we examine whether nonnegative solutions exist for a Kirchhoff-type issue that is driven by a fractional d ( z , . ) − $\mathrm{d}\left (\mathrm{z},.\right )-$ Laplacian operator, where d is a continuous positive function.
Ahlem Yahiaoui, Med-Salem Rezaoui, Omar Djidel, Rafik Guefaifia, Salah Boulaaras   +4 more
doaj   +1 more source

Model‐Based Time‐Modulated Write Algorithm for 1R Analog Memristive Crossbar Arrays

Advanced Electronic Materials, EarlyView.
A novel model‐based time‐modulated write algorithm efficiently programs analog 1R memristive crossbar arrays by varying pulse duration at a fixed voltage. By leveraging a physics‐based compact model and a dynamic gain mechanism, this approach overcomes device nonlinearities and parasitic effects.
Richard Schroedter, Ahmet Samil Demirkol, Ioannis Messaris, Christian Bruchatz, Eter Mgeladze, Stefan Slesazeck, Thomas Mikolajick, Ronald Tetzlaff   +7 more
wiley   +1 more source

A High Order Theory for Linear Thermoelastic Shells: Comparison with Classical Theories

Journal of Engineering, 2013
A high order theory for linear thermoelasticity and heat conductivity of shells has been developed. The proposed theory is based on expansion of the 3-D equations of theory of thermoelasticity and heat conductivity into Fourier series in terms of ...
V. V. Zozulya
doaj   +1 more source

The Kirchhoff-Helmholtz integral for anisotropic elastic media

, 2015
The Kirchhoff-Helmholtz integral is a powerful tool to model the scattered wavefield from a smooth inter-face in acoustic or isotropic elastic media due to a given incident wavefield and observation points sufficiently far away from the interface.
Ursin, B, Tygel, M, Schleicher, J, Bleistein, N   +3 more
core   +1 more source

A Unifying Approach to Self‐Organizing Systems Interacting via Conservation Laws

Advanced Intelligent Discovery, EarlyView.
The article develops a unified way to model and analyze self‐organizing systems whose interactions are constrained by conservation laws. It represents physical/biological/engineered networks as graphs and builds projection operators (from incidence/cycle structure) that enforce those constraints and decompose network variables into constrained versus ...
F. Barrows, G. Zhang, S. Anand, Z. Chen, J. Lin, A. Desai, S. Martiniani, F. Caravelli   +7 more
wiley   +1 more source

A fractal model for the sea state bias in radar altimetry [PDF]

Nonlinear Processes in Geophysics, 1997
The Kirchhoff approximation is used to determine the sea state bias in radar altimetry. A weakly nonlinear model of the sea waves is used to derive the joint moments of two different points separated by a distance R; the bias moment is formulated, and ...
D. E. Bar, D. E. Bar, Y. Agnon, Y. Agnon
doaj  

Faust und Mephistopheles am Hochgericht vorbeireitend / J. Kirchhoff. Eduard Kretzschmar sc. [PDF]

, 1880
FAUST UND MEPHISTOPHELES AM HOCHGERICHT VORBEIREITEND / J. KIRCHHOFF. EDUARD KRETZSCHMAR SC. Faust und Mephistopheles am Hochgericht vorbeireitend / J. Kirchhoff. Eduard Kretzschmar sc.
Kirchhoff, Johann Jakob, Kretzschmar, Eduard   +1 more
core