Results 11 to 20 of about 181,239 (315)
Applied General Topology, 2023 Since Hochster's work, spectral spaces have attracted increasing interest. Through this note we give a new self-contained and constructible topology-independent proof of the fact that the set of proper ideals of a ring endowed with coarse lower topology ...
Amartya Goswami
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Remote Sensing, 2023 Infrared small target detection technology is widely used in infrared search and tracking, infrared precision guidance, low and slow small aircraft detection, and other projects. Its detection ability is very important in terms of finding unknown targets
Wenjing Wang +7 more
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Remote Sensing, 2023 Accurate stratospheric temperature observations are crucial for weather forecasts and climate change studies. This paper discusses a precise measurement method for the stratospheric temperature profile using narrow bands with ultra-high spectral ...
Sufeng Wang +6 more
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An Investigation of the Fengyun-4A/B GIIRS Performance on Temperature and Humidity Retrievals
Atmosphere, 2022 The Fengyun-4A/B (FY-4A/B) geostationary satellite carries the Geostationary Interferometric Infrared Sounder (GIIRS). The instrument parameters of the GIIRS on FY-4A and FY-4B are not exactly the same, which is crucial for the atmospheric temperature ...
Sufeng Wang, Feng Lu, Yutao Feng
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The Sentinel 2 MSI Spectral Mixing Space
Remote Sensing, 2022 A composite spectral feature space is used to characterize the spectral mixing properties of Sentinel 2 Multispectral Instrument (MSI) spectra over a wide diversity of landscapes.
Christopher Small, Daniel Sousa
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An improved spectral estimation method based on color perception features of mobile phone camera
Frontiers in Neuroscience, 2022 We use the mobile phone camera as a new spectral imaging device to obtain raw responses of samples for spectral estimation and propose an improved sequential adaptive weighted spectral estimation method. First, we verify the linearity of the raw response
Duan Liu +5 more
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BoletÃn de la Sociedad Matemática Mexicana, 2018 We study some natural generalizations of the spectral spaces in the contexts of commutative rings and distributive lattices. We obtain a topological characterization for the spectra of commutative (not necessarily unitary) rings and we find spectral versions for the up-spectral and down-spectral spaces.
Lorenzo Acosta +1 more
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LRF-Net: Learning Local Reference Frames for 3D Local Shape Description and Matching
Sensors, 2020 The local reference frame (LRF) acts as a critical role in 3D local shape description and matching. However, most existing LRFs are hand-crafted and suffer from limited repeatability and robustness.
Angfan Zhu +3 more
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Topology and its Applications, 2004 A topological space \(X\) is said to be spectral if and only if it satisfies the following four conditions: (1) It is sober; (2) it is quasi-compact; (3) the quasi-compact open subsets form a basis for the topology of \(X\); (4) the family of quasi-compact open subsets of \(X\) is closed under finite intersections.
Belaid, Karim +2 more
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Joint Characterization of the Cryospheric Spectral Feature Space
Frontiers in Remote Sensing, 2022 Multispectral and hyperspectral feature spaces are useful for a variety of remote sensing applications ranging from spectral mixture modeling to discrete thematic classification.
Christopher Small, Daniel Sousa
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