Results 1 to 10 of about 4,316,417 (322)
Atomic Ground-State Energies [PDF]
Canadian Journal of Physics, 1980 It is demonstrated that atomic Hartree–Fock binding energies may be reproduced with great accuracy (within about four parts in a thousand) by a scaled model system in which the electrons are noninteracting, and are bound in a bare Coulomb potential.
Bhaduri, R. K., Brack, Matthias
core +3 more sources
Stochastic Mechanism of Shock Disturbances of Rocket Sleigh Supports during High-Speed Track Testing of Aviation Equipment [PDF]
E3S Web of Conferences, 2023 Tests of ballistic aircraft on rail tracks in conditions close to real ones are an economically viable alternative to flight tests. Rocket rail tracks exist in the USA, Canada, France, China and a number of other countries.
Astakhov Sergei, Biryukov Vasily
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Applied Sciences, 2022 In order to reduce the complexity of the receiving system for wideband signals, a novel space-borne high-resolution synthetic aperture radar (SAR) system with the non-uniform hybrid sampling technology is proposed in this paper.
Zhenghuan Xia +11 more
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Remote Sensing, 2022 Non-imaging radar can achieve the detection and localization of moving targets, but it faces difficulties in the classification of targets. Aiming for the application of moving target classification by low/medium resolution non-imaging radar, this paper ...
Chuang Zhang +13 more
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Existence and Asymptotic of Solutions for a $p$-Laplace Schrödinger Equation with Critical Frequency [PDF]
Sahand Communications in Mathematical Analysis, 2023 We study the Schr\"odinger equation $\left(\mathrm{Q}_{\varepsilon}\right)$: $- \varepsilon^{2(p-1)} \Delta_p v + V(x)\, |v|^{p-2} v - |v|^{q-1}v = 0$, $x \in \mathbb{R}^N$, with $v(x) \rightarrow 0$ as $|x| \rightarrow+\infty$, for the infinite case ...
Juan Mayorga-Zambrano +3 more
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AN ADAPTIVE SHIP DETECTION ALGORITHM FOR HRWS SAR IMAGES UNDER COMPLEX BACKGROUND: APPLICATION TO SENTINEL1A DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 Real-time ship detection using synthetic aperture radar (SAR) plays a vital role in disaster emergency and marine security. Especially the high resolution and wide swath (HRWS) SAR images, provides the advantages of high resolution and wide swath ...
G. He +6 more
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A Design Approach of Optical Phased Array with Low Side Lobe Level and Wide Angle Steering Range
Photonics, 2021 In this paper, a new design approach of optical phased array (OPA) with low side lobe level (SLL) and wide angle steering range is proposed. This approach consists of two steps.
Xinyu He, Tao Dong, Jingwen He, Yue Xu
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Analysis of the state of mechanized sowing of rice in seedlings [PDF]
BIO Web of ConferencesThis article presents a brief analysis of the state of rice cultivation, the main advantages and disadvantages of seedling rice planting, analyzes the prospects for rice cultivation and mechanization of this process in Uzbekistan.
Alimova Feruza +3 more
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Through-Floor Vital Sign Searching for Trapped Person Using Wireless-Netted UWB Radars
Applied Sciences, 2021 In personnel rescue applications, considerable attention has been paid to the positioning method of living persons. Especially, the effective vital sign searching is urgently required.
Zhenghuan Xia +5 more
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Optimization of the parameters of the pneumatic feed mechanism for precise clustered sowing [PDF]
BIO Web of ConferencesThe article is devoted to the description of one of the ways to improve the mechanization of sowing, namely, precise sowing in a clustered way. It is analyzed that precise sowing provides a given placement of plants over the area and makes it possible ...
Alimova Feruza +3 more
doaj +1 more source