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Two kinds of optimal controls for probabilistic mix-valued logical dynamic networks

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Science China(Information Sciences) 2014年第5期57卷 218-227页

作者： liU ZhenBin WANG YuZhen li haitao School of Control Science and Engineering Shandong University Science and Information College Qingdao Agricultural University

This paper addresses two kinds of optimal control problems of probabilistic mix-valued logical control networks by using the semi-tensor product of matrices,and presents a number of new results on the optimal finite-horizon control and the first-passage model based control problems,***,the probabilistic mix-valued logical control network is expressed in an algebraic form by the semi-tensor product method,based on which the optimal finite-horizon control problem is studied and a new algorithm for choosing a sequence of control actions is established to minimize a given cost functional over finite ***,the first-passage model of probabilistic mix-valued logical networks is given and a new algorithm for designing the optimal control scheme is proposed to maximize the corresponding probability ***,an illustrative example is studied to support our new results/algorithms.

关键词： probabilistic mix-valued logical network optimal control first-passage model Markov chain semi-tensor product dynamic programming

Emergency Plan for Water Supply in Consecutive Droughts and Sustainable Water Resources Management in Beijing

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Acta Geologica Sinica(English Edition) 2018年第3期92卷 1231-1244页

作者： li Wenpeng ZHENG Yuejun YE Chao li haitao China Institute for Geo-Environmental Monitoring Beijing lO0081 China Beijing Geo-Environment Monitoring Station Beijing 100037 China

Beijing, the capital city of China, has suffered from acute water shortage, with only 300 m3/a of water resources available per capita. In addition, Beijing has experienced a prolonged period of consecutive droughts from 1999 to 2010. Water crisis has constrained the socio-economic development of Beijing. Meanwhile, the national "South-to-North Water Transfer"（STNWT） project, which is expected to provide some relief to the water crisis in Beijing, is still under development. In order to ensure the security of water supply in Beijing before the completion of the STNWT project, several measures have been implemented to cope with droughts, including pumping groundwater from emergency well fields,water saving, recycling of water, rain and flood water harvesting, and the diversion of water from neighboring rivers and groundwater basins. Groundwater from four emergency well fields contributes the most to the public and domestic water supplies in Beijing, supplying a total volume of 1.8×10;m;.The water crisis is supposed to be mitigated by the completion of the STNWT project. After the completion of this project, more sustainable management of water resources will be implemented,including the use of aquifers as groundwater reservoirs and conjunctive use of surface water and groundwater resources.

关键词： Emergency water supply groundwater resources natural disasters groundwater reservoir sustainable water resources management Beijing

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A survey on applications of semi-tensor product method in engineering

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Science China(Information Sciences) 2018年第1期61卷 28-44页

作者： haitao li Guodong ZHAO Min MENG June FENG School of Mathematics and Statistics Shandong Normal University School of Electrical and Electronic Engineering Nanyang Technological University School of Mathematics Shandong University

Semi-tensor product(STP) of matrices has attracted more and more attention from both control theory and engineering in the last two decades. This paper presents a comprehensive survey on the applications of STP method in engineering. Firstly, some preliminary results on STP method are ***, some applications of STP method in engineering, including gene regulation, power system, wireless communication, smart grid, information security, combustion engine and vehicle control, are ***, some potential applications of STP method are predicted.

关键词： semi-tensor product of matrices gene regulation power system smart grid information security vehicle control

Two new species of the genus Nassarius(Gastropoda:Nassariidae) from the South China Sea

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Acta Oceanologica Sinica 2021年第9期40卷 90-93页

作者： Suping Zhang Shuqian Zhang haitao li Laboratory of Marine Organism Taxonomy and Phylogeny Institute of OceanologyChinese Academy of SciencesQingdao 266071China South China Sea Environmental Monitoring Center Ministry of Natural ResourcesGuangzhou 510300China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Two species of Nassarius Duméril, 1805 from the South China Sea are described and illustrated. The specimens are in the Nassariidae collection of the Marine Biological Museum of Chinese Academy of Sciences, *** concavus sp. nov., from the sandy bottom at a depth of 180 m, resembles Nassarius glabrus Zhang and Zhang, 2014 in general shell morphology, but differs from the latter in having a smaller, more slender adult shell without axial ribs on the upper teleoconch whorls. Nassarius nanshaensis sp. nov., from the Nansha Islands at a depth of 56–147 m, is similar to Nassarius maxiutongi Zhang, Zhang and li, 2019 in the shell sculpture, but differs in having a more slender shell with a higher spire, and fewer cusps on the rachidian tooth(9–11 vs. 13–17).

关键词： Gastropoda Nassarius new species South China Sea Nansha Islands

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Epigenetic modifiers: catalytic or noncatalytic, that is the question

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Frontiers of Medicine 2024年第5期18卷 941-943页

作者： Yimin liu haitao li State Key Laboratory of Molecular Oncology Beijing Frontier Research Center for Biological StructureSchool of Basic Medical SciencesTsinghua UniversityBeijing 100084China SXMU-Tsinghua Collaborative Innovation Center for Frontier Medicine Shanxi Medical UniversityTaiyuan 030001China Tsinghua-Peking Center for life Sciences Beijing 100084China

Epigenetic modifiers are enzymes that catalyze covalent chemical modifications on chromatin and thus play important roles in setting relatively stable states for gene expression and cell *** has been widely observed that mutations in epigenetic modifiers cause various types of human diseases,such as developmental defects and ***,deciphering how the mutations affect functions of the epigenetic modifiers in developmental and pathological conditions is crucial for understanding the underlying mechanisms and for identifying potential therapeutic targets.

关键词： identity. modifiers catalytic

Adaptive control method for nonlinear time-delay processes

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Journal of Systems Engineering and Electronics 2007年第3期18卷 566-576页

作者： Chen Zonghai Zhang haitao li Ming Xiang Wei Dept of Automation Univ of Science and Technology of China Hefei 230027 P R China

Two complex properties, varying time-delay and block-oriented nonlinearity, are very common in chemical engineering processes and not easy to be controlled by routine control methods. Aimed at these two complex properties, a novel adaptive control algorithm the basis of nonlinear OFS （orthonormal functional series） model is proposed. First, the hybrid model which combines OFS and Volterra series is introduced. Then, a stable state feedback strategy is used to construct a nonlinear adaptive control algorithm that can guarantee the closed-loop stability and can track the set point curve without steady-state errors. Finally, control simulations and experiments on a nonlinear process with varying time-delay are presented. A number of experimental results validate the efficiency and superiority of this algorithm.

关键词： adaptive control block-oriented nonlinearity varying time-delay OFS Volterra Series,

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Initial result of the Chinese Deep Space Stations' coordinates from Chinese domestic VLBI experiments

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Science China(Information Sciences) 2017年第1期60卷 170-176页

作者： Guangliang DONG Dezhen XU haitao li Huan ZHOU Beijing Institute of Tracking and Telecommunications Technology

China's Lunar Exploration Program(CLEP) prompted the design and construction of the globally distributed Chinese Deep Space Network(CDSN). This network consists of Jiamusi and Kashi stations in China, and Zapala station in Argentina. However, the positions of Jiamusi and Kashi are not accurate enough for future Chinese deep space missions, and geodetic Very Long Baseline Interferometry(VLBI) is the most effective way to determine their positions. Since the CDSN stations are equipped with narrow-band receivers,they cannot participate in current international VLBI sessions in which wide-band frequencies are utilized. Thus a cooperative geodetic program of the CDSN and Chinese VLBI Network(CVN, the VLBI tracking subsystem of the CLEP) was initiated to determine their positions, in which specially designed frequencies can be utilized,and some CVN stations can act as position reference stations owing to their precise positions from long-term international VLBI observations. Primary results have been obtained from the CDSN–CVN combined domestic VLBI experiments from September 28, 2014, through December 10, 2015. The positions of Jiamusi and Kashi are determined to be better than 10-mm precision in the X, Y, and Z directions, which are improved by a factor of approximately 20 over their a priori values.

关键词： VLBI Chinese Deep Space Network Chinese VLBI Network station position determination terrestrial reference frame

Oxidative Dehydrogenative [3+3] Annulation of Benzylhydrazines with Aziridines Leading to Tetrahydrotriazines

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Chinese Journal of Chemistry 2019年第9期37卷 878-882页

作者： haitao li Jia liang Congde Huo Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of EducationCollege of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhouGansu 730070China

Oxidative dehydrogenative [3+3] annulation of benzylhydrazines with N-sulfonylaziridines is described.A series of complex tetrahydro-1,2,4-triazines were produced under mild reaction conditions.

关键词： Benzylhydrazines Aziridines Leading Tetrahydrotriazines

State-feedback set stabilization of logical control networks with state-dependent delay

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Science China(Information Sciences) 2021年第6期64卷 233-235页

作者： Yating ZHENG haitao li Jun-E FENG School of Mathematics Shandong University School of Mathematics and Statistics Shandong Normal University

Dear editor,As an important mathematical model for the elucidation,analysis, and control of gene regulatory networks(GRNs),logical networks have attracted considerable attention from scientists in numerous fields of study. From a mathematical point of view, a logical network is parameter-free; thus, it can be utilized to reconstruct relatively large-scale *** studying logical networks, stabilization is highly critical as it has been widely used in maintaining human health and treating diseases [1, 2].

关键词： State-feedback set stabilization of logical control networks with state-dependent delay