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تعداد نتایج: 7111095 فیلتر نتایج به سال:
We set out to determine the ratio, qIR, of rest-frame 8–1000-μm flux, S IR, to monochromatic radio flux, S 1.4 GHz, for galaxies selected at far-infrared (IR) and radio wavelengths, to search for signs that the ratio evolves with redshift, luminosity or dust temperature, Td, and to identify any farIR-bright outliers – useful laboratories for exploring why the far-IR/radio correlation (FIRRC) is...
S U M M A R Y Since the end of the 1970s, teleseismic waves are used routinely to infer the first-order characteristics of the event (location, depth, duration, focal mechanism), but finding the second-order kinematic parameters (spatial distribution of slip, rupture velocity and more basically the discrimination between the fault plane and the other nodal plane) of distant events remains a dif...
AbstructA few thousands of far ultraviolet images of the ionosphere were obtained since December 1986 by the Atmospheric/Ionospheric Remote Sensor (AIRS) aboard the Polar BEAR satellite. Fast algorithms for applying automated satelliteattitude, geometric, and photometric corrections to these images were developed, and the first results are discussed. A software package that is based on these al...
Bone material is composed of an organic matrix of collagen fibers and apatite nanoparticles. Previously, vibrational spectroscopy techniques such as infrared (IR) and Raman spectroscopy have proved to be particularly useful for characterizing the two constituent organic and inorganic phases of bone. In this work, we tested the potential use of high intensity synchrotron-based far-IR radiation (...
In this paper we investigate if simple change detection algorithms can be combined and used to create a more robust change detection algorithm by leveraging their individual peculiarities. We use Genetic Programming to combine the outputs (i.e. binary masks) of the detection algorithms with unary, binary and n-ary functions performing both masks’ combination and post-processing. Genetic Program...
In this paper, we deal with the acoustic inverse scattering problem for reconstructing complex cracks from the far field map. The scattering problem models the diffraction of waves by thin two-sided cylindrical screens. A complex crack is characterized by its shape, the type of boundary conditions and the boundary coefficients (surface impedance). We give explicit formulas which can be used to ...
Automated percutaneous diskectomy has certain advantages over other surgical approaches to the treatment of far-lateral disk herniation; primarily, the procedure can be performed under local anesthesia without soft-tissue disruption. We describe four patients with far-lateral herniations who were successfully treated with the procedure.
The search for faster ways to get fractal pictures onto the computer screen leads to new problems on Latin squares.
This article presents a stereo system for the detection of pedestrians using far-infrared cameras. Since pedestrian detection in far-infrared images can be difficult in some environmental conditions, the system exploits three different detection approaches: warm area detection, edge-based detection, and disparity computation. A final validation process is performed using head morphological and ...
A new derivation is given of an equation, relating the capture width of a wave power converter to the polar diagram of the waves generated by the device. The pattern of waves in the lee of the device is calculated in detail.
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