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nonlinearity

nonlinearity的相关文献在1992年到2022年内共计92篇,主要集中在数学、无线电电子学、电信技术、肿瘤学 等领域,其中期刊论文92篇、相关期刊53种,包括中国科学、半导体学报、武汉大学学报:自然科学英文版等; nonlinearity的相关文献由247位作者贡献,包括Tariq Shah、Hafeez ur Rehman、Li Ji-xing等。

nonlinearity—发文量

期刊论文>

论文:92 占比:100.00%

总计:92篇

nonlinearity—发文趋势图

nonlinearity

-研究学者

  • Tariq Shah
  • Hafeez ur Rehman
  • Li Ji-xing
  • Mohammad Mazyad Hazzazi
  • Nizar J. Ahmad
  • Song Qian
  • Zhang Yuan-cheng
  • A. A. Al Qarni
  • A. F. G. F. Filho
  • A. G. L. S. O. Mendes
  • 期刊论文

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    • Haochen Ji; Zongyu Zuo
    • 摘要: Dear Editor,Dimensionality reduction(DR)plays a prominent role in the processing of hyperspectral imagery.Considering the high dimensionality of multiple features,this letter presents a new unsupervised DR method named multiview locally linear embedding(MLLE),which captures the local linearity and global nonlinearity of the data sufficiently.We formulate MLLE as an optimization problem,where the diversity and complementarity of multiple features is fully exploited.An effective alternating optimization scheme is derived,and a linear model based on ridge regression is extended to alleviate the high correlation among single-view features.Experimental results on the Indian Pines and Pavia University datasets demonstrate the superiority of our proposed MLLE.
    • Prof.Dr.Wei-Chiang Hong
    • 摘要: As Journal of Management Science&Engineering Research(JMSER)is oriented toward publication of high-quality research,which is focused on advancing practice through theory of operations management,thus,the JMSER aims to make a guide contribution to the management science and operation practice in today’s global institutions.Along with the development of the artificial intelligence,accurate and precise forecasting results can be achieved.As the data may be with complexity,such as seasonality,cyclicity,fluctuation,dynamic nonlinearity,and so on.
    • Liang-Jian Lyu; Qing-Zhen Wang; Ze-Peng Huang; Xing Wu
    • 摘要: The R-2R resistor ladder is one of the best topologies for implementing compact-sized digital-to-analog converter(DAC)arrays in implantable neuro-stimulators.However,it has a limited resolution and considerable inter-channel variation due to component mismatches.To avoid losing analog information,we present sub-radix-2 DAC implemented by the R-βR resistor ladder in this paper.The digital successive approximation register(DSAR)algorithm corrects the transfer function of DACs based on their actual bit weights.Furthermore,a low-cost in situ adaptive bit-weight calibration(ABC)algorithm drives the analog output error between two DACs to zero by adjusting their bit weights automatically.The simulation results show that the proposed algorithm can calibrate the non-linear transfer function of each DAC and the gain error among multiple channels in the background.
    • Qing Zhang; Jun Zhang
    • 摘要: Optical switching is a fundamental element in all-optical integrated circuits and networks with ultrahigh speed and low energy consumption compared to their electronic counterparts.Switching on/off the waveguiding with another light beam demands large optical nonlinearity to compactify device footprint and decrease energy consumption,which is difficult to achieve in photonic systems.
    • ZHANG Ao; WANG Zhihua; WU Qiong; LIU Chengrui
    • 摘要: Aiming to evaluate the reliability of phase-transition degrading systems,a generalized stochastic degradation model with phase transition is constructed,and the corresponding analytical reliability function is formulated under the concept of the first hitting time.The phase-varying stochastic property and the phase-varying nonlinearity are considered simultaneously in the proposed model.To capture the phase-varying stochastic pro-perty,a Wiener process is adopted to model the non-monotonous degradation phase,while a Gamma process is utilized to model the monotonous one.In addition,the phase-varying non-linearity is captured by different transformed time scale functions.To facilitate the practical application of the proposed model,identification of phase model type and estimation of model parameters are discussed,and the initial guesses for parameters optimization are also given.Based on the constructed model,two simulation studies are carried out to verify the analytical reliability function and analyze the influence of model misspecification.Finally,a practical case study is conducted for illustration.
    • Hafeez ur Rehman; Tariq Shah; Amer Aljaedi; Mohammad Mazyad Hazzazi; Adel RAlharbi
    • 摘要: Elliptic curve cryptography ensures more safety and reliability than other public key cryptosystems of the same key size.In recent years,the use of elliptic curves in public-key cryptography has increased due to their complexity and reliability.Different kinds of substitution boxes are proposed to address the substitution process in the cryptosystems,including dynamical,static,and elliptic curve-based methods.Conventionally,elliptic curve-based S-boxes are based on prime field GF(p)but in this manuscript;we propose a new technique of generating S-boxes based on mordell elliptic curves over the Galois field GF(2n).This technique affords a higher number of possibilities to generate S-boxes,which helps to increase the security of the cryptosystem.The robustness of the proposed S-boxes against the well-known algebraic and statistical attacks is analyzed to classify its potential to generate confusion and achieve up to the mark results compared to the various schemes.The majority logic criterion results determine that the proposed S-boxes have up to the mark cryptographic strength.
    • Hafeez ur Rehman; Tariq Shah; Mohammad Mazyad Hazzazi; Ali Alshehri; Bassfar Zaid
    • 摘要: Elliptic curves(ECs)are deemed one of the most solid structures against modern computational attacks because of their small key size and high security.In many well-known cryptosystems,the substitution box(Sbox)is used as the only nonlinear portion of a security system.Recently,it has been shown that using dynamic S-boxes rather than static S-boxes increases the security of a cryptosystem.The conferred study also extends the practical application of ECs in designing the nonlinear components of block ciphers in symmetric key cryptography.In this study,instead of the Mordell elliptic curve(MEC)over the prime field,the Galois field has been engaged in constructing the S-boxes,the main nonlinear component of the block ciphers.Also,the proposed scheme uses the coordinates of MEC and the operation of the Galois field to generate a higher number of S-boxes with optimal nonlinearity,which increases the security of cryptosystems.The proposed S-boxes resilience against prominent algebraic and statistical attacks is evaluated to determine its potential to induce confusion and produce acceptable results compared to other schemes.Also,the majority logic criteria(MLC)are used to assess the new S-boxes usage in the image encryption application,and the outcomes indicate that they have significant cryptographic strength.
    • YE Xuefeng; TANG Lizhen; WANG Yang; JIN Xiangliang; PENG Yan; LUO Jun
    • 摘要: A two-step high-precision Time-to-Digital Converter(TDC),integrated with a Single-Photon Avalanche Diode(SPAD),used for Time-Of-Flight(TOF)application,has been developed and tested.Time interval measurement is performed by the coarse counter and fine interpolator,which are utilized to measure the total periods and the residue time of the reference clock,respectively.Following a detail analysis of time precision and clock jitter in the two-step structure,the prototype TDC fabricated in GSMC 1P6M 0.18μm CMOS Image Sensor(CIS)technology exhibits a Single-Shot Precision(SSP)of 11.415 ps and a dynamic range of 216.7 ns.In addition,a pixel of the chip occupies 100μm×100μm,and the measured Integral Nonlinearity(INL)and Differential Nonlinearity(DNL)are better than±0.88 LSB and±0.67 LSB,respectively.Meanwhile,the overall power consumption of the chip is 35 mW at 1.8 V power supply.Combined with these characteristics,the designed chip is suitable for TOF-based ranging applications.
    • Nikolay Karabutov
    • 摘要: Considering the structural analysis problem of systems properties with Bouc-Wen hysteresis (BWH), various approaches are proposed for the identification of BWH parameters. The applied methods and algorithms are based on the design of parametric models and consider a priori information and the results of data analysis. Structural changes in the BWH form a priori. Methods for the Bouc-Wen model (BWM) identification and its structure estimation are not considered under uncertainty. The study’s purpose is the analysis the structural problems of the Bouc-Wen hysteresis identification. The analysis base is the application of geometric frameworks (GF) under uncertainty. Methods for adaptive estimation parameters and structural of BWM were proposed. The adaptive system stability is proved based on vector Lyapunov functions. An approach is proposed to estimate the identifiability and structure of the system with BWH. The method for estimating the identifiability degree based on the analysis of GF is considered. BWM modifications are proposed to guarantee the system’s stability and simplify its description.
    • Zhiqiang Ma; Zhong Wu; Yue Xu
    • 摘要: A compact pixel for single-photon detection in the analog domain is presented. The pixel integrates a single-photon avalanche diode(SPAD), a passive quenching & active recharging circuit(PQARC), and an analog counter for fast and accurate sensing and counting of photons. Fabricated in a standard 0.18 μm CMOS technology, the simulated and experimental results reveal that the dead time of the PQARC is about 8 ns and the maximum photon-counting rate can reach 125 Mcps(counting per second). The analog counter can achieve an 8-bit counting range with a voltage step of 6.9 mV. The differential nonlinearity(DNL) and integral nonlinearity(INL) of the analog counter are within the ± 0.6 and ± 1.2 LSB, respectively, indicating high linearity of photon counting. Due to its simple circuit structure and compact layout configuration, the total area occupation of the presented pixel is about 1500 μm^(2), leading to a high fill factor of 9.2%. The presented in-pixel front-end circuit is very suitable for the high-density array integration of SPAD sensors.
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