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New Particle Swarm Optimisation Algorithm with Hénon Chaotic Map Structure

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Chinese Journal of Electronics 2017年第4期26卷 747-753页

作者： yan tao LIU Fengxian CHEN Bin Chengdu Institute of Computer Applications Chinese Academy of Sciences University of Chinese Academy of Sciences Guangzhou Institute of Geochemistry Chinese Academy of Sciencess Guangzhou Institute of Electronic Technology Chinese Academy of Sciences

A new Particle swarm optimisation(PSO)algorithm based on the H′enon chaotic map(hereafter HCPSO algorithm) is presented in this paper to deal with the premature convergence problem of the traditional PSO algorithm. The HCPSO algorithm changes the structure of the traditional PSO algorithm and deviates from the structures of conventional hybrid algorithms that merely introduce chaotic searching into PSO. Based on the convergence condition of PSO, the HCPSO algorithm can improve solution precision and increase the convergence rate by combing using the targeting technique of chaotic mapping. For validation, fourteen benchmark functions were used to compare the proposed algorithm with six other hybrid PSO algorithms. The experimental results indicated that the HCPSO algorithm is superior to the other algorithms in terms of convergence speed and solution accuracy.

关键词： Particle swarm optimization Chaotic op timization H′enon map Targeting of chaos

Quantum key distribution using four-level particles

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Chinese Science Bulletin 2011年第1期56卷 24-28页

作者： yan tao yan FengLi College of Physics Science and Information Engineering Hebei Normal UniversityShijiazhuang 050016China Hebei Advanced Thin Films Laboratory Shijiazhuang 050016China

We present a quantum key distribution protocol based on four-level particle ***,a controlled quantum key distribution protocol is proposed using three four-level *** show that the two protocols are secure.

关键词： quantum key distribution four-level particles entanglement

Experimental Study on Cooling Down Process of a Nitrogen-Charged Cryogenic Loop Heat Pipe

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Journal of Thermal Science 2023年第1期32卷 153-165页

作者： ZHAO Ya'nan yan tao LIANG Jingtao Key Laboratory of Space Energy Conversion Technology Technical Institute of Physics and ChemistryChinese Academyof SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China

Cryogenic loop heat pipes are highly efficient heat transfer devices at cryogenic temperature range,which have promising application prospects in satellites,spacecrafts,electronics,and so *** down process is a most critical process for a CLHP before *** present,secondary loop is a major way for a CLHP to fulfil cooling down and most studies are concentrated on heat transfer characteristics during normal ***,few investigations have been carried out on the cooling down *** this paper,the cooling down process of a nitrogen-charged CLHP assisted with a secondary loop was experimentally investigated.A simple qualitative approach to estimate the cooling down time was proposed according to the law of conservation of *** two flow paths of the working fluid in the CLHP during the cooling down process were *** studies on the cooling down process with various secondary heat loads and working fluid inventory were presented in *** the increase of secondary heat load,the elapsed time of Stage III decreased significantly due to the larger mass flow rate in Path *** addition,the effect of the working fluid inventory on the cooling down time was generally small in the range from 2.99 MPa to 3.80 ***,with 2.80 MPa working fluid inventory,it required much longer cooling down time,which was because of the lack of liquid in the CLHP with low working fluid ***,the influence of gravity on the temperature variation of the components during the experiments was *** work is beneficial for better understanding of the cooling down process and optimizing of CLHPs.

关键词： cryogenic loop heat pipe secondary loop cooling down heat transfer

Experimental Investigation on Thermal Characteristics of Long Distance Loop Heat Pipes

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Journal of Thermal Science 2022年第3期31卷 741-750页

作者： ZHAO Ya’nan yan tao LIANG Jingtao Key Laboratory of Space Energy Conversion Technology Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100190China

Loop heat pipes(LHPs)are attractive two-phase thermal control devices for satellites,electronics and many other *** are capable of transporting heat efficiently for long distances up to several meters at any *** paper investigated the heat transfer characteristics of loop heat pipes with long distances and small diameter transport *** stainless steel tubes of 2 mm and 3 mm in inner diameters were chosen as liquid lines and vapor lines of the *** local thermal resistances in the evaporator of the 6 m-LHP were researched and analyzed,which indicated that the thermal resistance between the aluminum block and the vapor in the vapor channel accounted for a major proportion of the total thermal *** effect of heat sink temperatures on the performance of the 6 m-LHP were compared with 10°C,15°C,20°C and 25°C cooling water ***,the thermal characteristics of LHPs with transport distances of 2 m and 16 m were also experimentally *** 16 m-LHP could achieve a heat transfer capacity of 100 W and the 2 m-LHP could reach more than 339 W,on the premise of the evaporator temperature below 100°*** thermal resistance of the 2 m-LHP could achieve 0.125°C/W.

关键词： loop heat pipe thermal management heat transport long distance thermal resistance

The Same Distribution of Limit Cycles in a Hamiltonian System with Nine Seven-order Perturbed Terms

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Acta Mathematicae Applicatae Sinica 2008年第1期24卷 167-176页

作者： tao Jiang Zhi-yan yang School of Information Beijing Wuzi University Beijing 101149 China

Using qualitative analysis and numerical simulation, we investigate the number and distribution of limit cycles for a cubic Hamiltonian system with nine different seven-order perturbed terms. It is showed that these perturbed systems have the same distribution of limit cycles. Furthermore, these systems have 13, 11 and 9 limit cycles for some parameters, respectively. The accurate positions of the 13, 11 and 9 limit cycles are obtained by numerical exploration, respectively. Our results imply that these perturbed systems are equivalent in the sense of distribution of limit cycles. This is useful for studying limit cycles of perturbed systems.

关键词： Limit cycles bifurcation

Metabolic profiling of endogenous bile acids:a novel method to assess hepatoprotective effect of Tanreqing capsule on carbon-tetrachloride-induced liver injury in rats

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Chinese Journal of Natural Medicines 2018年第4期16卷 271-283页

作者： XU Ying ZHONG Ping-Ping tao yan-yan Shanghai Kaibao Pharmaceutical Co. Ltd.Shanghai 201401China School of Pharmacy Shanghai University of Traditional Chinese MedicineShanghai 201203China Institute of Liver Diseases Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai201203China Shanghai Clinical Key Laboratory of Traditional Chinese Medicine Shanghai 201203China

Tanreqing(TRQ), a traditional Chinese medicine(TCM) formula, can alleviate liver injury and improve liver function. Its pharmacological mechanisms of actions are still unclear due to its complex components and multi-target natures. Metabolomic study is an effective approach to investigating drug pharmacological actions, new diagnostic markers, and potential mechanisms of actions. In the present study, a new strategy was used to evaluate the protective effect of TRQ capsule against carbon tetrachloride(CCl_4)-induced hepatotoxicity in rats, by analyzing metabolic profiling of endogenous bile acids(BAs) along with biochemical and histological analyses. BAs concentrations were determined by ultra-performance liquid chromatography coupled with quadrupole mass spectrometry(UPLC-MS). Principal component analysis and partial least squares discriminant analysis were then employed to analyze the UPLC-MS results and compare the hepatoprotective effect of TRQ capsule in different groups at the doses of 0.36, 1.44, and 2.88 g·kg^(-1) body weight, respectively. Moreover, our results suggested that taurocholic acid(TCA) and taurohyodesoxycholic acid(THDCA) were the most important biochemical markers, which were indicative of CCl_4-induced acute hepatic damage and hepatoprotective effect of TRQ capsule. Therefore, this new strategy would be an excellent alternative method for evaluating hepatoprotective effect and proposing potential mechanisms of action for other drugs as well.

关键词： Metabolic profiling Bile acids Hepatoprotective effect Tanreqing capsule UPLC-MS

Determination of Cationic Surfactant by Laser Thermal Lens Spectrometry

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Chinese Chemical Letters 2002年第11期13卷 1107-1110页

作者： Hong tao yan Ying ZHANG yang yan Department of Chemistry Northwest UniversityXian 710069

A novel method for the determination of cationic surfactant by laser thermal lens spectrometry was developed. It was based on the reaction between 1-hydroxy-2-(5-nitro-2-Pyri- dylazo)-8-aminonaphthalene-3,6-disulfonic acid (5-NO2-PAH) and cationic surfactant to form 1:2 ionic association complex in a weakly basic medium (pH 9.44). The determination conditions and the mechanism were discussed. The method has been applied to the analysis of wastewater and moat water samples.

关键词： Determination of cationic surfactant cetylpyridinium bromide (CPB) cetyltri- methyl-ammonium bromide (CTMAB) 1-hydroxy-2-(5-nitro-2-pyridylazo)-8-aminonaphthalene- 3,6-disulfonic acid (5-NO2-PAHA) laser thermal lens spectrometry.

A New Flatness Pattern Recognition Model Based on Cerebellar Model Articulation Controllers Network

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Journal of Iron and Steel Research International 2008年第5期15卷 32-36页

作者： HE Hai-tao LI yan College of Information Science and Engineering Yanshan University Qinhuangdao 066004 Hebei China

In the traditional flatness pattern recognition neural network, the topologic configurations need to be rebuilt with a changing width of cold strip. Furthermore, the large learning assignment, slow convergence, and local minimum in the network are observed. Moreover, going by the structure of the traditional neural network, according to experience, the model is time-consuming and complex. Thus, a new approach of flatness pattern recognition is proposed based on the CMAC （cerebellar model articulation controllers） neural network. The difference in fuzzy distances between samples and the basic patterns is introduced as the input of the CMAC network. Simultaneously, the adequate learning rate is improved in the error correction algorithm of this neural network. The new approach with advantages, such as high learning speed, good generalization, and easy implementation, is efficient and intelligent. The simulation results show that the speed and accuracy of the flatness pattern recognition model are obviously im proved.

关键词： flatness pattern recognition CMAC neural network fuzzy distance

Super Cyclically Edge-connected Vertex-transitive Graphs of Girth at Least 5

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Acta Mathematica Sinica,English Series 2013年第8期29卷 1569-1580页

作者： Jin Xin ZHOU yan tao LI Department of Mathematics Beijing Jiaotong University Department of Basic Teaching Beijing Union University

A cyclic edge-cut of a graph G is an edge set, the removal of which separates two cycles. If G has a cyclic edge-cut, then it is called cyclically separable. We call a cyclically separable graph super cyclically edge-connected, in short, super-λc, if the removal of any minimum cyclic edge-cut results in a component which is a shortest cycle. In [Zhang, Z., Wang, B.： Super cyclically edge-connected transitive graphs. J. Combin. Optim., 22, 549–562 （2011）], it is proved that a connected vertex-transitive graph is super-λc if G has minimum degree at least 4 and girth at least 6, and the authors also presented a class of nonsuper-λc graphs which have degree 4 and girth 5. In this paper, a characterization of k （k≥4）-regular vertex-transitive nonsuper-λc graphs of girth 5 is given. Using this, we classify all k （k≥4）-regular nonsuper-λc Cayley graphs of girth 5, and construct the first infinite family of nonsuper-λc vertex-transitive non-Cayley graphs.

关键词： Cyclic edge-cut cyclic edge-connectivity super cyclically edge-connected vertex-transit-ive graphs