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Search Results: 1 - 10 of 23301 matches for " HE ZhenHui "
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Stochastic resonance in the growth of a tumor induced by correlated noises
Weirong Zhong,Yuanzhi Shao,Zhenhui He
Chinese Science Bulletin , 2005, DOI: 10.1007/BF03183733
Abstract: Multiplicative noise is found to divide the growth law of tumors into two parts in a logistic model, which is driven by additive and multiplicative noises simultaneously. The Fokker-Planck equation was also derived to explain the fact that the influence of the intensity of multiplicative noise on the growth of tumor cells has a stochastic resonance-like characteristic. An appropriate intensity of multiplicative noise is benefit to the growth of the tumor cells. The correlation between two sorts of noises weakens the stochastic resonance-like characteristic. Homologous noises promote the growth of the tumor cells.
Nonequilibrium dynamic transition in a kinetic Ising model driven by both deterministic modulation and correlated stochastic noises
Yuanzhi Shao,Weirong Zhong,Zhenhui He
Chinese Science Bulletin , 2005, DOI: 10.1007/BF03183630
Abstract: We report the nonequilibrium dynamical phase transition (NDPT) appearing in a kinetic Ising spin system (ISS) subject to the joint application of a deterministic external field and the stochastic mutually correlated noises simultaneously. A time-dependent Ginzburg-Landau stochastic differential equation, including an oscillating modulation and the correlated multiplicative and additive white noises, was addressed and the numerical solution to the relevant Fokker-Planck equation was presented on the basis of an average-period approach of driven field. The correlated white noises and the deterministic modulation induce a kind of dynamic symmetry-breaking order, analogous to the stochastic resonance in trend, in the kinetic ISS, and the reentrant transition has been observed between the dynamic disorder and order phases when the intensities of multiplicative and additive noises were changing. The dependencies of a dynamic order parameterQ upon the intensities of additive noiseA and multiplicative noiseM, the correlation λ between two noises, and the amplitude of applied external fieldh were investigated quantitatively and visualized vividly. Here a brief discussion is given to outline the underlying mechanism of the NDPT in a kinetic ISS driven by an external force and correlated noises.
Nonequilibrium dynamic transition in a kinetic Ising model driven by both deterministic modulation and correlated stochastic noises
Yuanzhi Shao,Weirong Zhong,Zhenhui He
Physics , 2006,
Abstract: We report the nonequilibrium dynamical phase transition (NDPT) appearing in a kinetic Ising spin system (ISS) subject to the joint application of a deterministic external field and the stochastic mutually correlated noises simultaneously. A time-dependent Ginzburg-Landau stochastic differential equation, including an oscillating modulation and the correlated multiplicative and additive white noises, was addressed and the numerical solution to the relevant Fokker-Planck equation was presented on the basis of an average-period approach of driven field. The correlated white noises and the deterministic modulation induce a kind of dynamic symmetry-breaking order, analogous to the stochastic resonance in trend, in the kinetic ISS, and the reentrant transition has been observed between the dynamic disorder and order phases when the intensities of multiplicative and additive noises were changing. The dependencies of a dynamic order parameter Q upon the intensities of additive noise A and multiplicative noise M, the correlation lmda between two noises, and the amplitude of applied external field h were investigated quantitatively and visualized vividly. A brief discussion was given to outline the underlying mechanism of the NDPT in a kinetic ISS driven by an external force and correlated noises. Keywords: Ising spin system, nonequilibrium dynamical phase transition, stochastic resonance, correlated noises, TDGL model. PACS: 75.10.Hk, 64.60.Ht, 05.10.Gg, 76.20.+q
The Development and Main Reform of Criminal Procedure Law in China  [PDF]
Wang Zhenhui
Chinese Studies (ChnStd) , 2015, DOI: 10.4236/chnstd.2015.41004
Abstract: China’s current “Criminal Procedure Law” was enacted in 1979, and the law established the basic framework of socialist criminal justice system with Chinese characteristics. The amendments in 1996 and 2012 to the “Criminal Procedure Law”, involving the basic principles, procedures, rules and many other aspects of criminal procedure, emphasized balance on punishment of crime and protection of human rights, entity justice and procedure justice. From the development and main reform of China’s Criminal Procedure Law, we can see that China’s Criminal Procedure Law effectively connected with the international justice standards gradually, promoted China’s criminal procedure legal system going to be more scientific, democratic and rational, and reflected the great progress of China’s democracy and legal system construction having been made in the field of criminal justice (Chen Guangzhong 2012; Bian Jianlin, 2012).
The growth dynamics of tumor subject to both immune surveillance and external therapy intervention
YuanZhi Shao,WeiRong Zhong,FengHua Wang,ZhenHui He,ZhongJun Xia
Chinese Science Bulletin , 2007, DOI: 10.1007/s11434-007-0234-9
Abstract: Considering the growth of tumor cells modeled by an enzyme dynamic process under an immune surveillance, we studied in anti-tumor immunotherapy the single-variable growth dynamics of tumor cells subject to a multiplicative noise and an external therapy intervention simultaneously. The law of tumor growth of the above anti-tumor immunotherapy model was revealed through numerical simulations to the relevant stochastic dynamic differential equation. Two simulative parameters of therapy, i.e., therapy intensity and therapy duty-cycle, were introduced to characterize a treatment process similar to a tumor clinic therapy. There exists a critical therapy boundary which, in an exponent-decaying form, divides the parameter region of therapy into an invalid and a valid treatment zone, respectively. A greater critical therapy duty-cycle is necessary to achieve a valid treatment for a lower therapy intensity while the critical therapy intensity decreases accordingly with an enhancing immunity. A primary clinic observation of the patients with the typical non-hodgekin’s lymphoma was carried out, and there appears a basic agreement between clinic observations and dynamic simulations.
A General Algorithm for Biorthogonal Functions and Performance Analysis of Biorthogonal Scramble Modulation System  [PDF]
Yueyun Chen, Zhenhui Tan
Wireless Sensor Network (WSN) , 2010, DOI: 10.4236/wsn.2010.23026
Abstract: Applying the theorems of Mobius inverse and Dirichlet inverse, a general algorithm to obtain biorthogonal functions based on generalized Fourier series analysis is introduced. In the algorithm, the orthogonal function can be not only Fourier or Legendre series, but also can be any one of all orthogonal function systems. These kinds of biorthogonal function sets are used as scramble signals to construct biorthogonal scramble modulation (BOSM) wireless transmission systems. In a BOSM system, the transmitted signal has significant security performance. Several different BOSM and orthogonal systems are compared on aspects of BER performance and spectrum efficiency, simulation results show that the BOSM systems based on Chebyshev polynomial and Legendre polynomial are better than BOSM system based on Fourier series, also better than orthogonal MCM and OFDM systems.
Intergenerational Relations and Subjective Well-Being among Chinese Oldest-Old  [PDF]
Zhang Li, Cui Zhenhui
Chinese Studies (ChnStd) , 2016, DOI: 10.4236/chnstd.2016.52003
Abstract: This research examines how intergenerational relations impact subjective well-being among the elderly aged 85 and over in China. Through analyzing data from the 2011 wave of Chinese Longitudinal Healthy Longevity Survey (CLHLS), the results show that better intergenerational relations promote the elderly’s positive feelings and reduce their negative feelings. The findings also suggest that the influence of intergenerational relations on Chinese oldest-old’s subjective well-being varies by gender and residence. In addition, financial support from children or financial exchanges with offspring is found to decrease negative feelings of the Chinese oldest-old, but it does not improve their positive feelings. Such results emphasize that non-financial support from offspring may be more important factors than financial support in promoting the Chinese oldest-old’s subjective well-being. The research draws future research attention to exploring non-financial forms of intergenerational support to promote Chinese oldest-old’s subjective well-being.
Evaluation on Radar Reflectivity-Rainfall Rate (Z-R) Relationships for Guyana  [PDF]
Komalchand Dhiram, Zhenhui Wang
Atmospheric and Climate Sciences (ACS) , 2016, DOI: 10.4236/acs.2016.64039
Abstract: The constant development of science and technology in weather radar results in high-resolution spatial and temporal rainfall estimates and improved early warnings of meteorological phenomena such as flood [1]. Weather radars do not measure the rainfall amount directly, so a relationship between the reflectivity (Z) and rainfall rate (R), called the Z-R relationship (Z = aRb), where a and b are empirical constants, can be used to estimate the rainfall amount. In this research, mathematical techniques were used to find the best climatological Z-R relationships for the Low Coastal Plain of Guyana. The reflectivity data from the S-Band Doppler Weather Radar for February 17 and 21, 2011 and May 8, 2012 together with the daily rainfall depths at 29 rainfall stations located within a 150 km radius were investigated. A climatological Z-R relationship type Z = 200R1.6 (Marshall-Palmer) configured by default into the radar system was used to investigate the correlation between the radar reflectivity and the rainfall by gauges. The same data sets were used with two distinct experimental Z-R relationships, Z = 300R1.4 (WSR-88D Convective) and Z = 250R1.2 (Rosenfeld Tropical) to determine if any could be applicable for area of study. By comprehensive regression analysis, New Z-R and R-Z relationships for each of the three events aforementioned were developed. In addition, a combination of all the samples for all three events were used to produce another relationship called “All in One”. Statistical measures were then applied to detect BIAS and Error STD in order to produce more evidence-based results. It is proven that different Z-R relationships could be calibrated into the radar system to provide more accurate rainfall estimation.
Cross-kink multi-soliton solutions for the (3+1)-D Jimbo-Miwa equation  [PDF]
Zhenhui Xu, Hanlin Chen
Open Journal of Applied Sciences (OJAppS) , 2012, DOI: 10.4236/ojapps.2012.24B049
Abstract: In this paper, by using bilinear form and extended three-wave type of ans¨atz approach, we obtain new cross-kink multi-soliton solutions of the (3+1)-dimensional Jimbo-Miwa equation, including the periodic breather-type of kink three-soliton solutions, the cross-kink four-soliton solutions, the doubly periodic breathertype of soliton solutions and the doubly periodic breather-type of cross-kink two-soliton solutions. It is shown that the generalized three-wave method, with the help of symbolic computation, provides an effective and powerful mathematical tool for solving high dimensional nonlinear evolution equations in mathematical physics.
The growth dynamics of tumor subject to both immune surveillance and external therapy intervention
SHAO YuanZhi,ZHONG WeiRong,WANG FengHua,HE ZhenHui,XIA ZhongJun,
SHAO
,YuanZhi,ZHONG,WeiRong,WANG,FengHua,HE,ZhenHui,XIA,ZhongJun

科学通报(英文版) , 2007,
Abstract: Considering the growth of tumor cells modeled by an enzyme dynamic process under an immune surveillance, we studied in anti-tumor immunotherapy the single-variable growth dynamics of tumor cells subject to a multiplicative noise and an external therapy intervention simultaneously. The law of tumor growth of the above anti-tumor immunotherapy model was revealed through numerical simulations to the relevant stochastic dynamic differential equation. Two simulative parameters of therapy, i.e., therapy intensity and therapy duty-cycle, were introduced to characterize a treatment process similar to a tumor clinic therapy. There exists a critical therapy boundary which, in an exponent-decaying form, divides the parameter region of therapy into an invalid and a valid treatment zone, respectively. A greater critical therapy duty-cycle is necessary to achieve a valid treatment for a lower therapy intensity while the critical therapy intensity decreases accordingly with an enhancing immunity. A primary clinic observation of the patients with the typical non-hodgekin’s lymphoma was carried out, and there appears a basic agreement between clinic observations and dynamic simulations. Supported by the National Natural Science Foundation of China (Grant No. 60471023)
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