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| 1 | DEGENERATE SEMI-GROUP METHODS FOR THE EXPONENTIAL STABILITY OF THE FIRST ORDER SINGULAR DISTRIBUTED PARAMETER SYSTEMS显示文摘Exponential stability of the first order singular distributed parameter systems is discussedin the light of degenerate semi-group methods,which is described by the abstract developing equationin Hilbert space.The necessary and sufficient conditions concerning the exponential stability of thefirst order singular distributed parameter systems are given. | Zhaoqiang GE Guangtian ZHU Dexing FENG | 2008 | Journal of Systems Science & Complexity2008,21,2: | 13 |
| 2 | Exact controllability for singular distributed parameter system in Hilbert space显示文摘Exact controllability of singular distributed parameter control system is discussed via functional analysis and the theory of generalized operator semi-group in Hilbert space. Necessary and sufficient conditions concerning the exact controllability are given. Relations between exact controllability and stability of singular distributed parameter system are specified. | GE ZhaoQiang ZHU GuangTian FENG DeXing | 2009 | Science in China(Series F)2009,52,11: | 9 |
| 3 | Alpha-2-macroglobulin as a radioprotective agent: a review显示文摘Radiation is an important modality in cancer treatment, and eighty percent of cancer patients need radiotherapy at some point during their clinical management. However, radiation-induced damage to normal tissues restricts the therapeutic doses of radiation that can be delivered to tumours and thereby limits the effectiveness of the treatment. The use of radioprotectors represents an obvious strategy to obtain better tumour control using a higher dose in radiotherapy. However, most of the synthetic radioprotective compounds studied have shown inadequate clinical efficacy owing to their inherent toxicity and high cost. Hence, the development of radioprotective agents with lower toxicity and an extended window of protection has attracted a great deal of attention, and the identification of alternative agents that are less toxic and highly effective is an absolute necessity. Recent studies have shown that alpha-2-macroglobulin(α2M) possesses radioprotective effects. α2M is a tetrameric, disulfide-rich plasma glycoprotein that functions as a nonselective inhibitor of different types of non-specific proteases and as a carrier of cytokines, growth factors, and hormones. α2M induces protein factors whose interplay underlies radioprotection, which supports the idea that α2M is the central effector of natural radioprotection in the rat. Pretreatment with α2M has also induced a significant reduction of irradiation-induced DNA damage and the complete restoration of liver and body weight. Mihailovi? et al. concluded that the radioprotection provided by α2M was in part mediated through cytoprotection of new blood cells produced in the bone marrow; these authors also indicated that an important aspect of the radioprotective effect of amifostine was the result of the induction of the endogenous cytoprotective capability of α2M. The radioprotective effects of α2M are possibly due to antioxidant, antifibrosis, and anti-inflammatory functions, as well as the maintenance of homeostasis, and enhancement of the DNA repair and cell recovery processes. This review is the first to summarise the observations and elucidate the possible mechanisms responsible for the beneficial effects of α2M. The lacunae in the existing knowledge and directions for future research are also addressed. | Xueying Chen Xiangbo Kong Zhaoqiang Zhang Wei Chen Jieyu Chen Huanyang Li Wanting Cao Yaping Ge Silian Fang | 2014 | Chinese Journal of Cancer Research2014,26,5: | 7 |
| 4 | Well-posed problem of nonlinear singular distributed parameter systems and nonlinear GE-semigroup显示文摘According to the well-posed problem of nonlinear singular distributed parameter systems,frst of all,the nonlinear GE-semigroup induced by a continuous(possibly nonlinear)operator is introduced in Banach space,which is a generalization of GE-semigroup(i.e.,generalized operator semigroup),and the properties of nonlinear GE-semigroup are discussed;and then the existence,uniqueness and constructive expression for the strong solution of nonlinear singular distributed parameter system are discussed by nonlinear GE-semigroup;at last,the exponential stability of nonlinear singular distributed parameter system is studied by using nonlinear GE-semigroup,functional analysis and operator theory in Banach space. | GE ZhaoQiang FENG DeXing | 2013 | Science China(Information Sciences)2013,56,12: | 3 |
| 5 | Pulse controllability of singular distributed parameter systems显示文摘Dear editor, Controllability of singular distributed parameter systems has been been attracting attention from researchers for several decades. For example,approximate controllability has been considered in[1,2]. exact controllability has been studied in [2-4]. | Zhaoqiang GE Feng LIU Dexing FENG | 2019 | Science China(Information Sciences)2019,62,4: | 2 |
| 6 | Some new criterions for stability of general non-linear ecosystems based on subpositive definite matrix显示文摘 | Liu Feng Ge Zhaoqiang | 2005 | International Journal of Intelligent Information Management Systems and Technologies2005,,1: | 1 |
| 7 | Impulse Observability and Impulse Controllability of Regular Degenerate Evolution Systems显示文摘Impulse observability and impulse controllability of regular degenerate evolution systems are discussed by using functional analysis and operator theory in Banach space. Necessary and sufficient conditions for the impulse observability and impulse controllability of the system are obtained. This research is theoretically important for studying the design of the degenerate evolution system. | GE Zhaoqiang | 2016 | Journal of Systems Science & Complexity2016,29,4: | 1 |
| 8 | Perturbation and robust controllability of singular distributed parameter control systems in Hilbert space显示文摘Perturbation and robust controllability of the singular distributed parameter control system are discussed via functional analysis and the theory of GE-semigroup in Hilbert space.The perturbation principle of GE-semigroup and the sufficient condition concerning the robust controllability of the singular distributed parameter control system are obtained,in which the controllability for singular distributed parameter control system is not destroyed,if we perturb the equation by small bounded linear operator. | Zhaoqiang Ge | 2011 | Journal of Systems Engineering and Electronics2011,22,4: | 1 |
| 9 | An exact null controllability of stochastic singular systems显示文摘Dear editor,The stochastic singular system is also called the stochastic differential algebraic system,stochastic descriptor system,generalized stochastic system,and stochastic degenerate system(e.g.,[1–4]).This type of system is found in numerous fields of application,which include fluid dynamics,the modeling of multi-body mechanisms,finance,inputoutput economics and the problem of protein folding.The theory of stochastic singular systems,in which a special class of linear stochastic singular systems is considered,has been developed recently[1].The form of the initial function is given,so the corresponding initial value problem is uniquely solvable by applying the theory of generalized stochastic processes.Using white noise and fractional white noise. | Zhaoqiang GE Xiaochi GE | 2021 | Science China(Information Sciences)2021,64,7: | 0 |
| 10 | Exact Controllability and Exact Observability of Descriptor Infinite Dimensional Systems显示文摘Necessary and sufficient conditions for the exact controllability and exact observability of a descriptor infinite dimensional system are obtained in the sense of distributional solution.These general results are used to examine the exact controllability and exact observability of the Dzektser equation in the theory of seepage and the exact controllability of wave equation. | Zhaoqiang Ge | 2021 | IEEE/CAA Journal of Automatica Sinica2021,8,12: | 0 |
| 11 | ON STATE FEEDBACK AND POLE ASSIGNMENT OF THE SECOND ORDER COUPLED SINGULAR DISTRIBUTED PARAMETER SYSTEMS IN HILBERT SPACE显示文摘联合单个分布式的参数系统在 Hilbert 空格经由功能的分析和操作符理论被讨论的第二份订单的州的反馈和杆赋值,在哪个无限许多杆被改变。这个问题和答案的建设性的表示的答案被围住的线性操作员的概括的逆给。这研究为学习杆赋值和单个分布式的参数系统的稳定是理论上重要的。 | Zhaoqiang GE Guangtian ZHU Dexing FENG | 2011 | Journal of Systems Science & Complexity2011,24,3: | 0 |
| 12 | World-Class Dispatching Management Practices Featured by KPIs Centered Self-Adaptive Management Process显示文摘 | Zhaoqiang Ge Xiaoliang Bi Jian Zhou Zhilong Huang Yiyi Zou Zheng Xu | 2015 | Journal of Energy and Power Engineering2015,9,12: | 0 |
| 13 | Controllability and Observability of Stochastic Singular Systems in Banach Spaces显示文摘Exact(approximate)controllability and exact(approximate)observability of stochastic singular systems in Banach spaces are discussed.Firstly,the condition for the existence and uniqueness of the mild solution to stochastic singular systems is given by GE-semigroup in Banach spaces.Secondly,the necessary and sufficient conditions for the exact(approximate)controllability and exact(approximate)observability of the systems considered are derived in terms of GE-semigroup,and the dual principle is given.Thirdly,an illustrative example is given. | GE Zhaoqiang | 2022 | Journal of Systems Science & Complexity2022,35,1: | 0 |
| 14 | Impulse Controllability and Impulse Observability of Stochastic Singular Systems显示文摘This paper discusses the impulse controllability and impulse observability of stochastic singular systems.Firstly,the condition for the existence and uniqueness of the impulse solution to stochastic singular systems is given by Laplace transform.Secondly,the necessary and sufficient conditions for the impulse controllability and impulse observability of systems considered are derived in terms of matrix theory.Finally,an example is given to illustrate the effectiveness of the obtained theoretical results. | GE Zhaoqiang | 2021 | Journal of Systems Science & Complexity2021,34,3: | 0 |
| 15 | GE-semigroup method for controllability of stochastic descriptor linear systems显示文摘Dear editor,Nowadays,there are more and more researches on stochastic descriptor systems(see[1–7]).For example,Refs.[4,5]studied the exact controllability of a class of stochastic descriptor systems by a strongly continuous semigroup in Hilbert spaces.In this study,the exact controllability and approximate controllability of the following stochastic descriptor system are studied by using the GE-semigroup theory,respectively。 | Zhaoqiang GE | 2023 | Science China(Information Sciences)2023,66,3: | 0 |
| 16 | Controllability of Singular Distributed Parameter Systems in the Sense of Mild Solution显示文摘Necessary and sufficient conditions for the exact controllability and approximate controllability of a singular distributed parameter system are obtained.These general results are used to examine the exact controllability and approximate controllability of the Dzektser equation in the theory of seepage. | GE Zhaoqiang GE Xiaochi | 2020 | Journal of Systems Science & Complexity2020,33,5: | 0 |