Results 11 to 20 of about 1,918 (217)
SCT2G: Model for Fast Satellite Activity Recognition in SDA
IEEE Access, 2022 With the rapid development of space technology, the space domain environment has become increasingly complex and variable, which has created more challenges for space domain awareness. By classifying the problems faced by SDA, the overall idea of solving
Yining Song, Zhi Li, Zhanyue Zhang
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SDebrisNet: A Spatial–Temporal Saliency Network for Space Debris Detection
Applied Sciences, 2023 The rapidly growing number of space activities is generating numerous space debris, which greatly threatens the safety of space operations. Therefore, space-based space debris surveillance is crucial for the early avoidance of spacecraft emergencies ...
Jiang Tao, Yunfeng Cao, Meng Ding
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On countable choice and sequential spaces [PDF]
Mathematical Logic Quarterly, 2008 AbstractUnder the axiom of choice, every first countable space is a Fréchet‐Urysohn space. Although, in its absence even ℝ may fail to be a sequential space.Our goal in this paper is to discuss under which set‐theoretic conditions some topological classes, such as the first countable spaces, the metric spaces, or the subspaces of ℝ, are classes of ...
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Sequential Modeling in Vector Space. [PDF]
, 2021 In Information Retrieval and Natural Language Processing, representation of discrete objects, e.g., words, usually relies on embedding in vector space; this representation typically ignores sequential information. One instance of such sequential information is temporal evolution.
Wang B., Di Buccio E., Melucci M.
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Sequential coreflections of stratifiable spaces [PDF]
Proceedings of the American Mathematical Society, 1984 We prove that the sequential coreflection of a stratifiable space which is the union of countably many closed k k -spaces ...
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International Journal of Mathematics and Mathematical Sciences, 1999 First, we introduce sequential convergence structures and characterize Fréchet spaces and continuous functions in Fréchet spaces using these structures.
Woo Chorl Hong
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Journal of Pure & Applied Sciences, 2022 Sequence converges is an important research object in topology and analysis, since it is closely related to continuity, compactness and other related properties. In this article, we use the notion of regularly convergence, which is a generalization of the convergence notion, to define the regularly sequentially closed sets and the operator of regularly
Aml Kornas, Khadiga Arwini
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Nontrivial isometries on sp(α)
International Journal of Mathematics and Mathematical Sciences, 1982 sp(α) is a Banach space of sequences x with ‖x‖=(∑i=0∞|xi|p+α∑i=0∞|xi+1−xi|p)1/p.
Stephen L. Campbell
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I: Fréchet-Urysohn spaces [PDF]
Mathematica Moravica, 2016 In this paper, we introduce the concept ss-sequentially quotient mapping. Using this concept, we characterize s-Fréchet-Urysohn spaces and s-sequential spaces.
Renukadevi V., Prakash B.
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A Sequential Decision Algorithm of Reinforcement Learning for Composite Action Space
IEEE Access, 2023 It is the key research object of electronic warfare to use UAV (Unmanned Aerial Vehicle) clusters to carry out electronic countermeasure tasks. The UAV carries loads such as reconnaissance and interference at the same time, which makes it necessary to ...
Yuan Gao +5 more
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