Results 1 to 10 of about 225,750 (165)
High-Efficiency and Reliable Value Geometric Standard: Integrated Periodic Structure Reference Materials [PDF]
Micromachines, 2023 Integrated periodic structure reference materials are crucial for calibration in optical instruments and micro-computed tomography (micro-CT), yet they face limitations concerning a restricted measurement range, a single pattern type, and a single ...
Chenying Wang +9 more
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A periodic stage-structure model
Applied Mathematics Letters, 2003 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhengqiu Zhang
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IEEE Access, 2023 In this study, a novel antenna design is proposed for designing a frequency-reconfigurable wide-angle beam scanning antenna and applied to a squarely modulated reactance surface leaky wave antenna.
Doohyun Yang, Sangwook Nam
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Periodic and Near-Periodic Structures [PDF]
Shock and Vibration, 1995 Extensive work has been done on the vibration characteristics of perfectly periodic structures. This article reviews the different methods of analysis from several fields of study, for example solid-state physics and civil, mechanical, and aerospace engineering, used to determine the effects of disorder in one-dimensional (1-D) and 2-D periodic ...
S. S. Mester, H. Benaroya
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On Periodicity Detection and Structural Periodic Similarity [PDF]
Proceedings of the 2005 SIAM International Conference on Data Mining, 2005 This work motivates the need for more flexible structural similarity measures between time-series sequences, which are based on the extraction of important periodic features. Specifically, we present non-parametric methods for accurate periodicity detection and we introduce new periodic distance measures for time-series sequences.
Michail Vlachos +2 more
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Acta Acustica, 2022 Advanced Statistical Energy Analysis (ASEA) is used to predict vibrational response on a three-bay linear grillage of beams that supports multiple wave types when there is significant indirect coupling through tunneling mechanisms.
Wang Xing, Hopkins Carl
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An analytic solution of mathematical expectation for bogie-track interaction problems
Mechanical Engineering Journal, 2023 This paper presents a frequency-domain analytic solution of mathematical expectation for bogie-track dynamic interaction problems in which a random roughness on the railhead is considered.
Shun YOSHINO +2 more
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Periodic Auxetics: Structure and Design [PDF]
The Quarterly Journal of Mechanics and Applied Mathematics, 2017 Materials science has adopted the term of auxetic behavior for structural deformations where stretching in some direction entails lateral widening, rather than lateral shrinking. Most studies, in the last three decades, have explored repetitive or cellular structures and used the notion of negative Poisson's ratio as the hallmark of auxetic behavior ...
Borcea, Ciprian S., Streinu, Ileana
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Modelling of a Polarization Insensitive UWB FSS with Band Stop Response [PDF]
Radioengineering, 2021 This paper presents a compact ultra-wideband frequency selective surface (FSS) with band stop response. The proposed single layer FSS is printed on FR-4 substrate with a unit cell periodicity of 0.138λ_0 × 0.138λ_0, corresponding to its lowest operating ...
S. Bijimanzil Abdulkareem +1 more
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DOUBLY PERIODIC TEXTILE STRUCTURES [PDF]
Journal of Knot Theory and Its Ramifications, 2009 Knitted and woven textile structures are examples of doubly periodic structures in a thickened plane made out of intertwining strands of yarn. Factoring out the group of translation symmetries of such a structure gives rise to a link diagram in a thickened torus, as in [2]. Such a diagram on a standard torus in S3 is converted into a classical link by
Morton, H. R., Grishanov, S. A.
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