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Analysis of Vibration Characteristics of Angular Contact Ball Bearings in Aviation Engines Under Changing Conditions
Published 2025-07-01“…This paper addresses the vibration characteristics of angular contact ball bearings in aircraft engines under variable load conditions. …”
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Multi-objective particle swarm algorithm based on angular segmentation archive and dynamic update tactics
Published 2025-08-01“…To cope with this difficulty, this paper proposes a novel multi-objective particle swarm algorithm, called ASDMOPSO, which aims to improve the optimization efficiency through the angular division of the archive and the dynamic update strategy. …”
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Sparse DOA Estimation Method Based on Riemann Averaging under Strong Intermittent Jamming
Published 2025-04-01“…Aiming to address the problem of increased radar jamming in complex electromagnetic environments and the difficulty of accurately estimating the target signal close to a strong jamming signal, this paper proposes a sparse Direction of Arrival (DOA) estimation method based on Riemann averaging under strong intermittent jamming. First, under the extended coprime array data model, the Riemann averaging is introduced to suppress the jamming signal by leveraging the property that the target signal is continuously active while the strong jamming signal is intermittently active. …”
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Potential accuracy of quasi-optimal radar meters of angular coordinates with scanning multi-channel antenna system
Published 2020-05-01“…We present the results of studying the accuracy of determining the angular coordinates of the reflected signal for typical space-energy cases. …”
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Performance of fiber-based QAM/FSO systems in turbulence with anisotropic tilt angle and random angular jitter
Published 2025-09-01“…To better align with realistic turbulence and practical application, we developed the expressions for probability density function (PDF) of fiber-coupling efficiency and BER of fiber-based quadrature amplitude modulation (QAM) FSO communication systems in the weak anisotropic non-Kolmogorov (ANK) horizontal link with anisotropic tilt angle and random angular jitter, for the first time. The results show that with the growing of anisotropic tilt angle γ, the average BER first decays and then increases, and the variation trend of BER is symmetrical about the straight-line γ = 90∘. …”
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Dual-Phase Severity Grading of Strawberry Angular Leaf Spot Based on Improved YOLOv11 and OpenCV
Published 2025-05-01“…<i>Phyllosticta fragaricola</i>-induced angular leaf spot causes substantial economic losses in global strawberry production, necessitating advanced severity assessment methods. …”
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Controlled Generation of Orbital Angular Momentum Beams With Coherent Beam Combining Digital Laser and Liquid-Crystal q-Plate
Published 2024-01-01“…We report on versatile orbital angular momentum beam generation through the association of a 61-channels coherent beam combining digital laser and a liquid-crystal q-plate. …”
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High-Power, Few-Cycle, Angular Dispersion Compensated Mid-Infrared Pulses From a Noncollinear Optical Parametric Amplifier
Published 2017-01-01“…The angular chirp compensated KTA-based scheme is scalable to higher pulse energies and average powers and has various advantages compared to periodically poled and angle-tuned LiNbO<inline-formula><tex-math notation="LaTeX">$_3$</tex-math></inline-formula> -based amplifiers, which exhibit low resistance to photorefractive damage.…”
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ASSESSMENT OF ANGULAR DEVIATIONS OF THE VERTICAL SURFACES OF TEETH STUMPS OBTAINED DURING ODONTOPREPARATION FOR FIXED ORTHOPEDIC STRUCTURES (METAL-CERAMIC AND SOLID CROWNS)
Published 2021-07-01“…Purpose of the study: to determine the angular deviations of the vertical surfaces of molars, prepared by students of the 3rd year. …”
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The Impact of the Angle-average Approximation in the Partial Frequency Redistribution Modeling of the Mg ii h–k Doublet Stokes Profiles
Published 2024-01-01“…In particular, we aim to assess how the widely used angle-average approximation affects the predicted polarization. …”
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Penerapan Metode K-Means Clustering dan Simple Moving Average untuk Memprediksi Jenis Penyakit di Provinsi Jawa Timur
Published 2024-08-01“…Tahapan penelitian meliputi studi literatur, pengembangan model clustering menggunakan K-Means dan prediksi menggunakan Simple Moving Average, pengembangan sistem menggunakan MySQL, PHP dan Angular. …”
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THE TECHNOLOGY OF WELL BORE INCLINATION CONTROL AT DIRECTIONAL DRILLING (BHA)
Published 2022-05-01Subjects: Get full text
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J-PLUS: Tomographic analysis of galaxy angular density and redshift fluctuations in Data Release 3. Constraints on photo-$z$ errors, linear bias, and peculiar velocities
Published 2025-07-01“…Angular redshift fluctuations (ARF), instead, show higher sensitivity to radial peculiar velocities and also higher sensitivity to the average uncertainty in photo-$z$s ($\sigma_{\rm Err}$), with no obvious impact from systematics. …”
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Radial and Vertical Constraints on the Icy Origin of H2CO in the HD 163296 Protoplanetary Disk
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A Multiline Analysis of the Distribution and Excitation of CS and H2CS in the HD 163296 Disk
Published 2025-01-01“…Here, we present new and archival Atacama Large Millimeter/submillimeter Array and Submillimeter Array observations of CS and H _2 CS, and their C ^34 S and H _2 C ^34 S isotopologues, at high angular resolution (≈0 $\mathop{.}\limits^{^{\prime\prime} }$ 2–0 $\mathop{.}…”
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Assessment of the Sphericity of Submicrometer Particles Using a Single-particle Polar Nephelometer at an Urban Site in Japan
Published 2020-07-01“…Thus, to examine this property and its controlling factors, this study measured the scattering angular distributions of both thermodenuded and non-thermodenuded individual particles with a diameter of 500 nm in real time using a home-made polar nephelometer in Nagoya, Japan. …”
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Neurological Evaluation of Severe Congenital Kyphosis With Compressive Myelopathy in 39 Patients With a Minimum 1‐Year Follow‐Up
Published 2025-07-01“…ABSTRACT Objective Congenital angular kyphosis with compressive myelopathy is a rare yet underreported neurologic emergency for spine surgeons. …”
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