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Stability of operation versus temperature of a three-phase clock-driven chaotic circuit
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作者 周继超 Hyunsik Son +1 位作者 Namtae Kim Han Jung Song 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第12期152-159,共8页
We evaluate the influence of temperature on the behavior of a three-phase clock-driven metal–oxide–semiconductor (MOS) chaotic circuit. The chaotic circuit consists of two nonlinear functions, a level shifter, and... We evaluate the influence of temperature on the behavior of a three-phase clock-driven metal–oxide–semiconductor (MOS) chaotic circuit. The chaotic circuit consists of two nonlinear functions, a level shifter, and three sample and hold blocks. It is necessary to analyze a CMOS-based chaotic circuit with respect to variation in temperature for stability because the circuit is sensitive to the behavior of the circuit design parameters. The temperature dependence of the proposed chaotic circuit is investigated via the simulation program with integrated circuit emphasis (SPICE) using 0.6-μm CMOS process technology with a 5-V power supply and a 20-kHz clock frequency. The simulation results demonstrate the effects of temperature on the chaotic dynamics of the proposed chaotic circuit. The time series, frequency spectra, bifurcation phenomena, and Lyapunov exponent results are provided. 展开更多
关键词 chaotic circuit nonlinear functions temperature effect bifurcation Lyapunov exponent
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Functional cancer-cell-nociceptive neuronal circuits drive gastric tumor progression
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作者 Peng Gao Jie Zhang Yicheng Chen 《Science China(Life Sciences)》 2025年第9期2825-2826,共2页
Many cancers can exploit nearby neurons to promote their growth, but in extracranial tumors, these interactions are generally attributed to the secretion of growth factors or indirect effects(Padmanaban et al., 2024;R... Many cancers can exploit nearby neurons to promote their growth, but in extracranial tumors, these interactions are generally attributed to the secretion of growth factors or indirect effects(Padmanaban et al., 2024;Renz et al., 2018). Recently, in a study published in Nature, Wang's group(Zhi et al., 2025) discovered that gastric cancer(GC) can form neural circuits with adjacent nociceptive sensory nerves and utilize these malignant circuits to promote cancer growth and metastasis. 展开更多
关键词 exploit nearby neurons malignant circuits form neural circuits secretion growth factors gastric tumor progression functional cancer cell nociceptive neuronal circuits growth factors nociceptive sensory nerves
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An improved single-π equivalent circuit model for on-chip inductors in GaAs process 被引量:1
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作者 Hansheng Wang Weiliang He +1 位作者 Minghui Zhang Lu Tang 《Journal of Semiconductors》 EI CAS CSCD 2017年第11期91-96,共6页
An improved single-π equivalent circuit model for on-chip inductors in the GaAs process is presented in this paper. Considering high order parasites, the model is established by comprising an improved skin effect bra... An improved single-π equivalent circuit model for on-chip inductors in the GaAs process is presented in this paper. Considering high order parasites, the model is established by comprising an improved skin effect branch and a substrate lateral coupling branch. The parameter extraction is based on an improved characteristic function approach and vector fitting method. The model has better simulation than the previous work over the measured data of 2.5r and 4.5r on-chip inductors in the GaAs process. 展开更多
关键词 on-chip inductors GaAs process equivalent circuit model substrate lateral coupling branch improved characteristic function approach vector fitting
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