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Synchronization in Oscillator Networks with Nonlinear Coupling

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Communications in Theoretical Physics 2008年第10期50卷 925-930页

作者： ZHANG Jian-Bao liu zeng-rong LI Ying School of Sciences Hangzhou Dianzi University Hangzhou 310018 China Institute of Systems Biology Shanghai University Shanghai 200444 China College of Sciences Shanghai University Shanghai 200444 China

Synchronization in coupled oscillator networks has attracted much attention from many fields of science and engineering. In this paper, it is firstly proved that the oscifiator network with nonlinear coupling is also eventually dissipative under the hypothesis of eventual dissipation of the uncoupled oscillators. And the dynamics of the network is analyzed in its absorbing domain by combining two methods developed recently. Suufficient conditions for synchronization in the oscillator networks with nonlinear coupling are obtained. The two methods are combined effectively and the results embody the respective merits of the two methods. Numerical simulations confirm the validity of the results.

关键词： complete synchronization nonlinear coupling Lyapunov function approach

A Method to Generate New Exact Solutions from a Known Stationary Solution

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Chinese Physics Letters 1999年第5期16卷 313-315页

作者： liu zeng-rong HUANG De-bin Departement of Mathmatics Shanghai UniversityShanghai 201800 also LNM Institute of MechanicsChinese Academy of SciencesBeijing 100080

By combining the Backlund transformations and the AKNS system[Study in ***.53(1974)249.]which is a linear eigenvalue problem of the corresponding evolution equation,a method to find new exact solutions from known stationary solutions for nonlinear integrable equations is *** an example,Korteweg de Vries(KdV)equation is used to illustrate this method,and a class of new exact solutions of KdV equation is obtained.

关键词： equation exact integrable

A Family of Interesting Exact Solutions of the Sine-Gordon Equation

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Chinese Physics Letters 2000年第1期17卷 1-3页

作者： HUANG De-Bin liu zeng-rong WANG Li-Lian LNM Institute of MechanicsChinese Academy of SciencesBeijing 100080 Mathematical Department Shanghai UniversityShanghai 201800

By using AKNS[***.31(1973)125]system and introducing the wave function,a family of interesting exact solutions of the sine-Gordon equation are *** solutions seem to be some soliton,kink,***-kink ones respectively for the different choice of the spectrum,whereas due to the interaction between two traveling-waves they have some properties different from usual soliton,kink,and anti-kink solutions.

关键词： soliton traveling exact

The Dynamical Mechanisms of the Cell Cycle Size Checkpoint

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Chinese Physics Letters 2012年第10期29卷 253-256页

作者： FENG Shi-Fu YAN Jie liu zeng-rong YANG Ling School of Mathematical Sciences Soochow UniversitySuzhou 215006 Center for Systems Biology Soochow UniversitySuzhou 215006 Institute of Systems Biology Shanghai University99 Shangda RoadShanghai 200444

Cell division must be tightly coupled to cell growth in order to maintain cell size,whereas the mechanisms of how initialization of mitosis is regulated by cell size remain to be *** develop a mathematical model of the cell cycle,which incorporates cell growth to investigate the dynamical properties of the size checkpoint in embryos of Xenopus *** show that the size checkpoint is naturally raised from a saddle-node bifurcation,and in a mutant case,the cell loses its size control ability due to the loss of this saddle-node point.

关键词： point saddle bifurcation

Synchronization of Coupled Nonidentical Dynamical Systems

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Chinese Physics Letters 2010年第3期27卷 56-59页

作者：张刚张伟刘曾荣 College of Mechanical Engineering Beijing University of Technology Beijing 100124 Department of Mathematics Shijiazhuang College Shijiazhuang 050035 Institute of System Biology Shanghai University Shanghai 200444

Synchronization behavior of coupled dynamical systems is discussed. An equivalence relation is found between the diffeomorphic generalized synchronization and the complete synchronization of coupled nonidentical systems. Employing the method of the complete synchronization, the problem of the generalized synchronization can be unraveled. By constructing an appropriate coupling term, a sufficient condition is obtained for determining the complete synchronization of coupled nonidentical systems. Numerical simulations are also given to show the effectiveness of the proposed schemes.

关键词： Statistical physics and nonlinear systems

Deep Broad Learning for Emotion Classification in Textual Conversations

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Tsinghua Science and Technology 2024年第2期29卷 481-491页

作者： Sancheng Peng rong zeng Hongzhan liu Lihong Cao Guojun Wang Jianguo Xie Center for Linguistics and Applied Linguistics and Laboratory of Language Engineering and ComputingGuangdong University of Foreign StudiesGuangzhou 510006China Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices South China Normal UniversityGuangzhou 510006China School of Computer Science and Cyber Engineering Guangzhou UniversityGuangzhou 510006China Modern Education Technology Center Guangdong University of Foreign StudiesGuangzhou 510006China

Emotion classification in textual conversations focuses on classifying the emotion of each utterance from textual *** is becoming one of the most important tasks for natural language processing in recent ***,it is a challenging task for machines to conduct emotion classification in textual conversations because emotions rely heavily on textual *** address the challenge,we propose a method to classify emotion in textual conversations,by integrating the advantages of deep learning and broad learning,namely *** aims to provide a more effective solution to capture local contextual information(i.e.,utterance-level)in an utterance,as well as global contextual information(i.e.,speaker-level)in a conversation,based on Convolutional Neural Network(CNN),Bidirectional Long Short-Term Memory(Bi-LSTM),and broad *** experiments have been conducted on three public textual conversation datasets,which show that the context in both utterance-level and speaker-level is consistently beneficial to the performance of emotion *** addition,the results show that our proposed method outperforms the baseline methods on most of the testing datasets in weighted-average F1.

关键词： emotion classification textual conversation Convolutional Neural Network(CNN) Bidirectional Long Short-Term Memory(Bi-LSTM) broad learning

A Family of Exact Solutions for the Nonlinear Schrodinger Equation

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Journal of Shanghai University(English Edition) 2001年第4期5卷 273-275页

作者： HUANG De bin, liu zeng rong Department of Mathematics, College of Sciences, Shanghai University, Shanghai 200436, China Department of Mathematics College of Sciences Shanghai University Shanghai China

In this paper, the nonlinear Schrodinger (NLS) equation was analytically solved. Firstly, the stationary solutions of NLS equation were explicitly given by the elliptic functions. Then a family of exact solutions of NLS equation were obtained from these stationary solutions by a method for finding new exact solutions from the stationary solutions of integrable evolution equations.

关键词： nonlinear Schrodinger equation stationary solutions exact solutions

Upper semi-continuity of attractors for multivalued semi-flow under random perturbation

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Journal of Shanghai University(English Edition) 2006年第4期10卷 288-292页

作者：李挺刘曾荣 Department of Mathematics Suzhou University Suzhou 215006 P.R. China Department of Mathematics College of Sciences Shanghai University Shanghai 200444 P.R. China

In this paper the upper semi-continuity of global attractors for multivalued semi-flows under random perturbation was studied. First, the existence of random attractors for multivalued random semi-flows was considered, then it was proved that the global attractors for multivalue semi-flows are the upper semi-continuity under random perturbation. This result can be used in the numerical approximation of multivalued semi-flows and non-autonomous perturbation of multivalued semi-flows.

关键词： random attractor upper semi-continuity absorbing set.

Robotic versus laparoscopic surgery for sporadic benign insulinoma:Short-and long-term outcomes

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Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 399-405页

作者： Zhu-zeng Yin Yuan-Xing Gao Zhi-Ming Zhao Ming-Gen Hu Wen-Bo Tang rong liu Faculty of Hepato-Pancreato-Biliary Surgery The First Medical CenterChinese PLA General HospitalBeijing 100853China Institute of Hepatobiliary Surgery of Chinese PLA Beijing 100853China Key Laboratory of Digital Hepatobiliary Surgery of Chinese PLA Beijing 100853China

Background:Minimally invasive surgery is the optimal treatment for *** present study aimed to compare short-and long-term outcomes of laparoscopic and robotic surgery for sporadic benign ***:A retrospective analysis of patients who underwent laparoscopic or robotic surgery for insulinoma at our center between September 2007 and December 2019 was *** demographic,perioperative and postoperative follow-up results were compared between the laparoscopic and robotic ***:A total of 85 patients were enrolled,including 36 with laparoscopic approach and 49 with robotic *** was the preferred surgical ***-nine patients(69.4%)underwent enucleation;among them,26 and 33 patients underwent laparoscopic and robotic surgery,*** enucleation had a lower conversion rate to laparotomy(0 vs.19.2%,P=0.013),shorter operative time(102.0 vs.145.5 min,P=0.008)and shorter postoperative hospital stay(6.0 vs.8.5 d,P=0.002)than laparoscopic *** were no differences between the groups in terms of intraoperative blood loss,the rates of postoperative pancreatic fistula and *** a median follow-up of 65 months,two patients in the laparoscopic group developed a functional recurrence and none of the patients in the robotic group had a ***:Robotic enucleation can reduce the conversion rate to laparotomy and shorten operative time,which might lead to a reduction in postoperative hospital stay.

关键词： Robotic surgical procedures Laparoscopy Insulinoma Enucleation Pancreatectomy