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浏览/检索结果: 共22条，第1-10条 帮助

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Robust Stability Analysis of Smith Predictor Based Interval Fractional-Order Control Systems: A Case Study in Level Control Process 期刊论文  OAI收割
IEEE/CAA Journal of Automatica Sinica, 2023, 卷号: 10, 期号: 3, 页码: 762-780
作者:  Majid Ghorbani;  Mahsan Tavakoli-Kakhki;  Aleksei Tepljakov;  Eduard Petlenkov
  |  收藏  |  浏览/下载：12/0  |  提交时间：2023/03/02
Simultaneous variable selection in regression analysis of multivariate interval-censored data 期刊论文  OAI收割
BIOMETRICS, 2021, 页码: 12
作者:  Sun, Liuquan;  Li, Shuwei;  Wang, Lianming;  Song, Xinyuan;  Sui, Xuemei
  |  收藏  |  浏览/下载：15/0  |  提交时间：2022/04/02
Simultaneous determination of nitrate, chemical oxygen demand and turbidity in water based on UV-Vis absorption spectrometry combined with interval analysis 期刊论文  OAI收割
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2021, 卷号: 244
作者:  Chen, Xiaowei;  Yin, Gaofang;  Zhao, Nanjing;  Gan, Tingting;  Yang, Ruifang
  |  收藏  |  浏览/下载：52/0  |  提交时间：2020/12/28
Detection method and evaluation of zoom CAM curve based on linear displacement 会议论文  OAI收割
Nanjing, China, 2020-10-20
作者:  Zhao, Yue;  Kang, Shifa;  Qin, Xing
  |  收藏  |  浏览/下载：9/0  |  提交时间：2021/01/20
A Laguerre spectral method for quadratic optimal control of nonlinear systems in a semi-infinite interval 期刊论文  OAI收割
AUTOMATIKA, 2020, 卷号: 61, 期号: 3, 页码: 461-474
作者:  Masoumnezhad, Mojtaba;  Saeedi, Mohammadhossein;  Yu, Haijun;  Nik, Hassan Saberi
  |  收藏  |  浏览/下载：10/0  |  提交时间：2020/11/18
An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242 期刊论文  OAI收割
Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101
作者:  HXMT
  |  收藏  |  浏览/下载：49/0  |  提交时间：2022/02/08
accretion  accretion disks  black hole physics  X-rays: binaries  time  Astrophysics - High Energy Astrophysical Phenomena  Abstract:
Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.
Methods: Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.  
Efficient strategy for reliability-based optimization design of multidisciplinary coupled system with interval parameters 期刊论文  OAI收割
APPLIED MATHEMATICAL MODELLING, 2019, 卷号: 75, 页码: 349-370
作者:  Luo Y;  Wang RX(王睿星)
  |  收藏  |  浏览/下载：53/0  |  提交时间：2019/11/25
A Novel Ratio-Based Parallel DEA Approach for Evaluating the Energy and Environmental Performance of Chinese Transportation Sectors 期刊论文  OAI收割
JOURNAL OF SYSTEMS SCIENCE AND SYSTEMS ENGINEERING, 2019, 卷号: 28, 期号: 5, 页码: 621-635
作者:  Lei, Xiyang;  Li, Lin;  Zhang, Xuefei;  Dai, Qianzhi;  Fu, Yelin
  |  收藏  |  浏览/下载：71/0  |  提交时间：2020/01/10
A robust aerodynamic optimization design for airfoil based on interval uncertainty analysis method 会议论文  OAI收割
San Francisco, CA, United states, July 28, 2019 - August 1, 2019
作者:  Song X(宋鑫);  Zheng GN(郑冠男);  Yang GW(杨国伟)
  |  收藏  |  浏览/下载：12/0  |  提交时间：2020/11/20
Determination of Vertices and Edges in a Parametric Polytope to Analyze Root Indices of Robust Control Quality 期刊论文  OAI收割
International Journal of Automation and Computing, 2019, 卷号: 16, 期号: 6, 页码: 828-837
作者:  Sergey Gayvoronskiy;  Tatiana Ezangina;  Ivan Khozhaev;  Viktor Kazmin
  |  收藏  |  浏览/下载：5/0  |  提交时间：2021/02/22