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Effect of Network Size on Collective Motion of Mean Field for a Globally Coupled Map with Disorder

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Chinese Physics Letters 2016年第12期33卷 14-17页

作者：李静辉 Faculty of Science Ningbo University

We investigate the effect of the network size （or the elements number） on the collective motion of the mean field for a globally coupled map with disorder. It is shown that, with the increasing network size, the collective motion of the mean field of the globally coupled map can be shrunk periodically. In the absence of disorder of in the presence of disorder while without the coupling, this phenomenon is absent. Our result means that disorder can make the globally coupled map tame itself for certain numbers of network size. In addition, we discuss the possible application of our result to the network for action potential wave block at-a-distance in the heart.

关键词： of is for in with maps on

Enhancement of Resonant Activation by Constant Bias Current for Superconducting Junction

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Chinese Physics Letters 2016年第11期33卷 112-115页

作者：李静辉 Faculty of Science Ningbo University

We consider a superconducting （Josephson） junction driven by the thermal noise with an ac drive current and a dc constant bias current in the overdamped case and in the underdamped case, respectively, and investigate the effect of the constant bias current on the evolution of the net voltage versus the driving frequency. It is shown that, with some suitably selected values of the system＇s parameters, suitably increasing the absolute value of the constant bias current can lead to the enhancement of resonant activation of the net voltage versus the driving frequency. This result can benefit the investigation for the Josephson junction subjected to the constant bias current （or voltage）.

关键词： of in net as is for by

算法推荐意识形态属性的生成逻辑、风险及治理

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理论导刊 2022年第2期 70-76页

作者：李静辉甘肃开放大学马克思主义学院兰州730030

算法推荐正在超越人工智能的技术范式,成为社会资源配置的新兴权力,这一权力形态在资本逻辑加持下,已经开始扮演起意识形态的角色。算法推荐的意识形态属性不断僭越主流意识形态的共识生成、认同建构、价值凝聚和议题设置,以致造成主流... 详细信息

算法推荐正在超越人工智能的技术范式,成为社会资源配置的新兴权力,这一权力形态在资本逻辑加持下,已经开始扮演起意识形态的角色。算法推荐的意识形态属性不断僭越主流意识形态的共识生成、认同建构、价值凝聚和议题设置,以致造成主流意识形态价值功能或被遮蔽的风险。规避算法推荐的意识形态风险,需要推动政府、平台、算法、公众、媒体等多元治理主体在社会主体层面、算法技术层面、意识形态层面的共管共治,形成协同治理的局面。

关键词：算法推荐意识形态风险表征协同治理

Dilemma Produced by Infinity of a Random Walk

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Chinese Physics Letters 2015年第5期32卷 23-26页

作者：李静辉 Faculty of Science Ningbo University

We report a dilemma produced by the infinity of a random walk moving along a two-dimensional space sidestep. For this random walk, our investigation shows that using a different model can lead to a different diffusion coefficient of the random walk, which is produced by the infinity of the random walk. The result obtained by us in the present work can serve as a warning to us when we build the models to investigate the corresponding scientific problems.

关键词： In Dilemma Produced by Infinity of a Random Walk

Drift coefficients of motor proteins moving along sidesteps

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Chinese Physics B 2014年第10期23卷 75-79页

作者：李静辉 Faculty of Science Ningbo University

In the paper, we investigate two motor proteins moving along the sidesteps： a motor protein moving along a two- dimensional sidestep and another protein moving along a three-dimensional sidestep. The drift coefficients （or stationary average velocities） of these two motor proteins are calculated. We believe that our investigation of the motor proteins moving along the sidesteps in the present paper can benefit the investigation of the transport of the motor proteins to some extent.

关键词： motor protein drift master equation stationary average velocity

Flux of a Ratchet Model and Applications to Processive Motor Proteins

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Communications in Theoretical Physics 2015年第10期64卷 415-419页

作者：李静辉 Faculty of Science Ningbo University

In this paper, we investigate the stationary probability current(or flux) of a Brownian ratchet model as a function of the flipping rate of the fluctuating potential barrier. It is shown that, with suitably selecting the parameters' values of the ratchet system, we can get the negative resonant activation, the positive resonant activation,the double resonant activation, and the current reversal, for the stationary probability current versus the flipping rate.The appearance of these phenomena is the result of the cooperative effects of the potential's dichotomous fluctuations and the internal thermal fluctuations on the evolution of the flux versus the flipping rate of the fluctuating potential barrier. In addition, some applications of our results to the motor proteins are discussed.

关键词： ratchet fluctuating potential resonant activation

Frequency(Stochastic) Resonance and Stochastic Resonance for a Superconducting Junctions' Device

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Communications in Theoretical Physics 2014年第6期61卷 710-714页

作者：李静辉 Faculty of Science Ningbo University

In this paper, we investigate a Josephson-junction device with dichotomous resistance or a special SQUID(superconducting quantum interference device). It is shown that frequency(stochastic) resonance and stochastic resonance can appear for some suitably selected parameters' values of the device respectively. Our results can provide some insights for the investigation of the SQUID response to the signal(including the input alternating current, the added alternating voltage, the vertically added alternating magnetic field, and the detected(electric-magnetic) temporal-periodic signal).

关键词：随机共振设备频率超导结超导量子干涉器件 SQUID 约瑟夫森结交流电流

Multi-Resonant-Activation for a System Only Driven by Multi-State Noise

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Communications in Theoretical Physics 2010年第3期53卷 517-524页

作者：李静辉 Faculty of Science Ningbo University

我们为多状态噪音仅仅驾驶的一个系统在波动的潜在的障碍上考虑粒子的逃跑。它被看那，噪音能让粒子在波动的潜力上逃跑在一些情形的障碍；但是在另外的情形，它不能。如果噪音能让粒子在波动的潜在的障碍上逃跑，平均数第一经过时间(MF... 详细信息

我们为多状态噪音仅仅驾驶的一个系统在波动的潜在的障碍上考虑粒子的逃跑。它被看那，噪音能让粒子在波动的潜力上逃跑在一些情形的障碍；但是在另外的情形，它不能。如果噪音能让粒子在波动的潜在的障碍上逃跑，平均数第一经过时间(MFPT ) 能显示 multi-resonant-activation 的现象。为这现象，有二种反响的激活出现。一个人作为波动的潜在的障碍的扭动的率的功能是为 MFPT 的反响的激活；其它作为多状态噪音的转变率的功能为 MFPT 是那。

关键词：噪声驱动多态共振系统激活波动率 MFPT 通过时间

Noise composed of multiplication of two dichotomous noises

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Chinese Physics B 2008年第6期17卷 1990-1997页

作者：李静辉 Faculty of Science Ningbo University

In this paper, we introduce a noise which is composed of multiplication of two dichotomous noises, and derive the probability density and the statistical properties of this noise. The obtained results can help study the resonant activation phenomenon, the phenomenon of stochastic resonance, the transport of particles, and the nonequilibrium （phase） transition for the systems driven by this noise.

关键词： Dichotomous noise probability density statistical properties