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Self-adaptive mechanism based genetic algorithms for combinatorial optimization problems

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The Journal of China Universities of Posts and Telecommunications 2019年第5期26卷 11-21页

作者： Qu Zhijian Wang Shasha Xu Hongbo Li Panjing Li Caihong School of Computer Science and Technology Shandong University of Technology

To improve the evolutionary algorithm performance,especially in convergence speed and global optimization ability,a self-adaptive mechanism is designed both for the conventional genetic algorithm(CGA)and the quantum inspired genetic algorithm(QIGA).For the self-adaptive mechanism,each individual was assigned with suitable evolutionary parameter according to its current evolutionary ***,each individual can evolve toward to the currently best ***,to reduce the running time of the proposed self-adaptive mechanism-based QIGA(SAM-QIGA),a multi-universe parallel structure was employed in the *** results show that the proposed SAM-QIGA have better performances both in convergence and global optimization ability.

关键词： combinatorial optimization self-adaptive genetic algorithm multi-universe parallel

Palmitoylation of SARS-CoV-2 S protein is essential for viral infectivity

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Signal Transduction and Targeted Therapy 2021年第7期6卷 1989-1992页

作者： Zhuanchang Wu Zhaoying Zhang Xin Wang Jing Zhang Caiyue Ren Yuming Li Lifen Gao Xiaohong Liang Peihui Wang Chunhong Ma Key Laboratory for Experimental Teratology of Ministry of Education and Dept.Immunology School of Basic Medical SciencesCheeloo Medical CollegeShandong UniversityJinanShandongChina College of Agriculture and Forestry Linyi UniversityLinyiShandongChina Advanced Medical Research Institute Shandong UniversityJinanShandongChina State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina Key Laboratory of Infection and Immunity of shandong Province Shandong UniversityJinanShandongChina Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of shandong JinanShandongChina

Dear Editor,Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is the causative agent of the unprecedented coronavirus disease 2019(COVID-19).SARS-CoV-2 entry into host cells is mediated by the viral transmemb... 详细信息

关键词： acute respiratory glycoprotein

Ab initio Molecular Dynamics Study of Adsorption of Hydroxyl Groups on Graphene Surface

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Chinese Journal of Chemical Physics 2021年第6期34卷 777-784,I0003,I0056-I0060页

作者： Hong-de Liu Nai-gui Liu Dun-you Wang Jun-feng Ren College of Physics and Electronics Shandong Normal UniversityJinan 250014China

Reduced graphene oxide is the precursor to produce graphene in a large scale;however,to date,there has been no consensus on the electronic structure of reduced graphene *** this study,we carried out an ab initio molecular dynamics simulation to investigate the adsorption process of hydroxyl groups on graphene *** the adsorption process,the OH group needs to firstly pass through a physical adsorption complex with the OH above the bridge site of two carbon atoms,next to surmount a transition state,then to be adsorbed at the atop site of a carbon *** a 5×5 graphene surface,up to 6 hydroxyl groups can be adsorbed on the graphene surface,indicating the concentration coverage of the hydroxyl groups on graphene surface is about 12%.The simulation results show that the negative adsorption energy increases linearly as the number of adsorbed hydroxyl groups increases,and the band gap also increases linearly with the number of adsorbed hydroxyl groups.

关键词： Ab initio molecular dynamics Reaction profile Transition state Adsorption energy Band gap Hydroxyl group

Water impoundment modes of flood utilization for the Songnen Plain

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Science China(Technological Sciences) 2008年第5期51卷 506-516页

作者： XU ShiGuo1 & LI WenYi1,2 1 Dalian University of Technology, Dalian 116024, China 2 Yellow River shandong Bureauy, Jinan 250011, China Dalian University of Technology Yellow River shandong Bureauy

Taking the Songnen Plain as the research region and basing on the structural division of river water resources, the impounding models of flood water utilization are proposed. Considering the water requirement, potential impoundage and the degree of risk, two modes of the flood water utilization are developed: full impounding and partial impounding. A risk assessment method is put forward according to variation of the flood storage capacity before and after impounding water. A representative hydrological year is taken as an example to analyze the application of the model at the downstream of the Nenjiang River. It is found that the model is very useful for the flood utilization and protection. For flood utilization, the spring drought can be relieved and the risk of impounding water is also acceptable. For flood protection, the river flood peak can be largely reduced and the impounding water can increase the river discharge at the low water period, at the same time the structure of river water resources can be improved as well.

关键词： river water resources flood water utilization detention basin Songnen Plain

CHARACTERISTIC FINITE DIFFERENCE ALTERNATING-DIRECTION METHOD ANDANALYSIS FOR NUMERICAL RESERVOIR SIMULATION

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Acta Mathematica Scientia 2000年第1期20卷 88-96页

作者：袁益让 Institute of Mathematics Shandong University Jinan 250100 China

Petroleum science has made remarkable progress in organic geochemistry and in the research into the theories of petroleum origin, its transport and accumulation. In estimating the oil-gas resources of a basin, the knowledge of its evolutionary history and especially the numerical computation of fluid flow and the history of its changes under heat is vital. The mathematical model call be described as a coupled system of nonlinear partial differentical equations with initial-boundary value problems. This thesis, from actual conditions such as the effect of fluid compressibility and the characteristic of large-scal science-engineering computalion. puts forward a kind of characteristic finite difference alternating-direction scheme. Optimal order estimates in L-2 norm are derived for the error in the approximate solutions.

关键词： reservoir simulation compressibility alternating-direction characteristic finite difference optimal order estimates in L-2

Theoretical and Experimental Investigation of Fiber Bragg Gratings With Different Lengths for Ultrasonic Detection

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Photonic Sensors 2016年第2期6卷 187-192页

作者： Zhouzhou YU Qi JIANG Hao ZHANG Junjie WANG School of Control Science and Engineering Shandong University Jinan 250061 China State Key Lab of Microbial Technology School of Life Science Shandong University Jinan 250100 China

In this paper, the response of fiber Bragg gratings （FBGs） subjected to the ultrasonic wave has been theoretically and experimentally investigated. Although FBG sensors have been widely used in the ultrasonic detection for practical structural health monitoring, the relationship between the grating length and ultrasonic frequency is not yet to be obtained. To address this problem, an ultrasound detection system based on FBGs is designed and the response sensitivity of different lengths gratings are detected. Experimental results indicate that the grating with 3 mm length has a higher sensitivity when detecting high frequency ultrasonic wave, and the amplitude can be up to 0.6 mV. The 10 mm length grating has better detection sensitivity for low frequency ultrasonic wave and the amplitude is 0.8 mV. The results of this analysis provide useful tools for high sensitivity ultrasound detection in damage detection systems.

关键词： FBG nondestructive testing ultrasonic detection

Low Velocity Impact Localization System Using FBG Array and MVDR Beamforming Algorithm

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Photonic Sensors 2015年第4期5卷 357-364页

作者： Yaozhang SAI Mingshun JIANG Qingmei SUI Lei JIA Shizeng LU School of Control Science and Engineering Shandong University Jinan 250100 China

This paper proposes an impact localization system based on the fiber Bragg grating （FBG） array and minimum variance distortionless response （MVDR） beamforming algorithm. The linear FBG array, which contains seven FBG sensors, is used for detecting impact signals. Morlet wavelet transform is applied for extracting narrow-band signals of impact signals. According to the MVDR beamforming algorithm, the system realizes single-impact and multi-impact localizations. The localization system is verified on a 500mm×500mm×2mm carbon fiber reinforced polymer （CFRP） plate for single-impact and multi-impact localizations. The average locating error and the maximum locating error are 6.8mm and ***, respectively.

关键词： Fiber Bragg grating minimum variance distortionless response Morlet wavelet transform multi-impact localization

Coordination of e-commerce supply chain when e-commerce platform providing sales service and extended warranty service

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Journal of Control and Decision 2020年第3期7卷 241-261页

作者： Yuyan Wang Zhaoqing Yu Xiaohuan Ji School of Management Science and Engineering Shandong University of Finance and EconomicsJinanShandong 250014People’s Republic of China

With the rapid development of cybereconomy and the enhancement of sales service,many e-commerce platforms provide extended warranty service to alleviate consumers from worries about product quality when consumers purchasing products *** study examines the decisions and coordination of the e-commerce supply chain where the e-commerce platform dominates and provides sales service and extended warranty *** findings show that the centralised decision-making model is an ideal model because of the low sales price,high service level and high extended warranty *** the increase of the consumers’sensitivity coefficient to the extended warranty service price,sales price increases but extended warranty service price and service level decrease,the retailer’s profit and the platform’s profit *** proposed contract of‘revenue sharing joint commission’can realise the coordination of ecommerce supply chain.

关键词： E-commerce supply chain extended warranty service sales service coordination mechanism

Autocorrelation Function of Hydrogen Atoms in Magnetic Fields

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Chinese Physics Letters 2006年第11期23卷 2948-2951页

作者：于永丽赵霞李洪云郭文豪林圣路 College of Physics and Electronics Shandong Normal University Jinan 250014

The autocorrelation function is an important quantity that can reflect the dynamical properties of the Rydberg wave packet and can be measured in experiments. Applying time-dependent perturbation theory and rotating wave approximation, we derive the autocorrelation function of the double-pulse laser describing the evolution of a Rydberg wave packet of hydrogen atoms in magnetic fields. The resulting expression is written as a sum of the modified Caussian terms. Each Caussian term comes from a parent semiclassical closed orbit. It provides a direct explanation and experimentally controllable measurement scheme, which allows us therefore to recognize the closed orbit and to determine its returning time in high precision.

关键词： CLOSED CLASSICAL ORBITS RYDBERG WAVE-PACKETS QUANTUM SPECTRA IONIZATION PHOTODETACHMENT