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A Discrete Artificial Bee Colony Algorithm for Stochastic Vehicle Scheduling

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Complex System Modeling and Simulation 2022年第3期2卷 238-252页

作者： Yuanyuan li Yindong Shen jingpeng li Key Laboratory of Image Processing and Intelligent Control School of Artificial Intelligence and AutomationHuazhong University of Science and TechnologyWuhan 430074China Division of Computer Science and Mathematics University of StirlingStirlingFK94LAUK

Vehicle scheduling plays a profound role in public ***,stochastic vehicle scheduling may lead to more robust *** solve the stochastic vehicle scheduling problem(SVSP),a discrete artificial bee colony algorithm(DABC)is *** to the discreteness of SVSP,in DABC,a new encoding and decoding scheme with small dimensions is designed,whilst an initialization rule and three neighborhood search schemes(i.e.,discrete scheme,heuristic scheme,and learnable scheme)are devised individually.A series of experiments demonstrate that the proposed DABC with any neighborhood search scheme is able to produce better schedules than the benchmark results and DABC with the heuristic scheme performs the best among the three proposed search schemes.

关键词： public transportation stochastic vehicle scheduling discrete artificial bee colony search scheme

Robust Electric Vehicle Routing Problem with Time Windows under Demand Uncertainty and Weight-Related Energy Consumption

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Complex System Modeling and Simulation 2022年第1期2卷 18-34页

作者： Yindong Shen Leqin Yu jingpeng li Key Laboratory of Image Processing and Intelligent Control School of Artificial Intelligence and AutomationHuazhong University of Science and TechnologyWuhan 430074China Division of Computer Science and Mathematics University of StirlingStirlingFK94LAUK

Vehicle routing problem with time windows(VRPTW)is a core combinatorial optimization problem in distribution *** electric vehicle routing problem with time windows under demand uncertainty and weight-related energy consumption is an extension of the *** some researchers have studied either the electric VRPTW with nonlinear energy consumption model or the impact of the uncertain customer demand on the conventional vehicles,the literature on the integration of uncertain demand and energy consumption of electric vehicles is still ***,practically,it is usually not feasible to ignore the uncertainty of customer demand and the weight-related energy consumption of electronic vehicles(EVs)in actual ***,we propose the robust optimization model based on a route-related uncertain set to tackle this ***,adaptive large neighbourhood search heuristic has been developed to solve the problem due to the NP-hard nature of the *** effectiveness of the method is verified by experiments,and the influence of uncertain demand and uncertain parameters on the solution is further explored.

关键词： electric vehicle routing problem time windows uncertain demand energy consumption model robust optimization adaptive large neighbourhood search

Regenerative Role of Soil Seed Banks of Different Successional Stages in A Saline-alkaline Grassland in Northeast China

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Chinese Geographical Science 2018年第4期28卷 694-706页

作者： MA Hongyuan li jingpeng YANG Fan Lü Xiaotao PAN Yuepeng liANG Zhengwei Da'an Sodic Land Experiment Station Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102China Erguna Forest-Steppe Ecotone Research Station Key Laboratory of Forest Ecology and ManagementInstitute of Applied EcologyChinese Academy of SciencesShenyang 110016China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospherie Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Soil seed banks can act as a potential seed source for natural revegetation and restoration. However, in a saline-alkaline grassland, it remains unclear how the stages of vegetation succession affect the characteristics of soil seed banks and the potential of soil seed banks of different successional stages for vegetation restoration. In this study, seasonal changes of the soil seed bank, and seed production and dispersal dynamics along degradation successional gradients were investigated in a saline-alkaline grassland in Northeast China, where the dominant grass during the 1960 s, Leymus chinensis was replaced with the secondary successional order of Puccinellia chinampoensis, Chloris virgata, and Suaeda salsa, together with bare patches. It was found that the soil seed bank composition varied according to the changing vegetation and had the highest species richness(7–16) in the climax successional stage, but had a low S?rensen similarity(0.22–0.37) with the aboveground vegetation. There was a high seed density of the soil seed bank(21 062–62 166/m2 in August and December) and also high S?rensen similarity index values(0.47–0.60) in the secondary successional stages of P. chinampoensis, C. virgata, and S. salsa. In bare patches, there were many seeds in the soil seed bank and some seedlings also appeared in the aboveground vegetation, indicating the existence of a persistent soil seed bank. Seed density and species richness differed substantially among the different successional stages, which was related to the reproductive characteristics of the standing plants in vegetation communities. Due to the lack of propagules of perennial species, especially the climax species of L. chinensis, in the soil, the successful restoration of the degraded saline-alkaline grassland was not possible. The study proved that in a degraded saline-alkaline grassland dominated by biennial or annual species, the soil seed bank was important for the revegetation of the current dominant pla

关键词： soil seed bank seed dispersal ecological restoration phenology succession seed rain

Microwave Drying of Scots Pine Lumber:Structure Changes,Its Effect on liquid Permeability

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Journal of Renewable Materials 2023年第1期11卷 321-331页

作者： Sheng He Weiqi Leng Yuhe Chen Hongchen li jingpeng li Zaixing Wu Zizhang Xiao China National Bamboo Research Center Key Laboratory of High Efficient Processing of Bamboo of Zhejiang ProvinceHangzhouChina Nanjing Forestry University NanjingChina Central South University of Forestry and Technology ChangshaChina

Microwave(MW)drying method was adopted to enhance the liquid permeability of Scots pine *** changes were characterized by stereoscope microscope,scanned electron microscope(SEM)and transmission electron microscope(TEM)*** parameters before and after MW treatment were detected by mercury intrusion porosimetry(MIP)method,and the effect of structure changes on liquid permeability were *** stereoscope microscope,SEM and TEM examination results showed,macro and micro checks mainly developed at intercellcular of tracheids,intercellular of ray parenchyma and tracheid,while these checks extend main along the radial-longitudinal *** border destruction,aspirated pits’orus translocation and micro-checks in tracheid cell wall were also *** test shown that pore volume and pore area increased as macro and micro checks generated to form new *** changes would increase the quantity of pores or enlarge the pore *** flow pathways increased as macro and micro checks generated,aspirated pits reopened to form new pathways;liquid flow efficiency improved as porosity,pore volume and pore diameter increased which facilitated the liquid flow.

关键词： Microwave drying structure change pore structure liquid permeability Scots pine lumber

Construction and Expression of Eukaryotic Expression Vector of Mature Polypeptide of Duck Interferon Alpha Gene

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Journal of Northeast Agricultural University(English Edition) 2006年第2期13卷 133-135页

作者： PEI Fucheng li jingpeng li Lu ZHANG Jianguang REN Guiping Harbin Pharmaceutical Group Co. Ltd. Second Chinese Medicine Factory Harbin Heilongjiang 150078 PRC Pharmaceutical College Heilongjiang University of Chinese Medicine Harbin Heilongjiang 150040 PRC College of life Science Northeast Agriculural University Harbin Heilongjiang 150030 PRC

To study biological activities of Duck Interferon Alpha （DuIFN-α） and prepare antivirus medicine, the eukaryotic expression vector of mature polypeptide of Duck Interferon Alpha （mDuIFN-α） gene was constructed and expressed in insect cell. By means of PCR technique, the mDuIFN-α gene was cloned from pMD-18-duIFN-α recombinant_ The gene was then inserted to pGEM-T vector and identified by restriction endonuclease analysis and sequencing The mDuIFN-α gene was ligated with the eukaryotic expression vector pMelBacA. then transfected into Sf9 cell line. Recombinant polypeptide was effectively expressed in insect cell and its molecular weight was 34 ku.

关键词： duck α -interferon eukaryotic expression Sf9

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中国公民社会成长中的若干问题

社会科学 2012年第1期 13-22页

作者：李景鹏北京大学政治发展与政府管理研究所

处于现代化纵深发展的中国社会,正在经历着方向相反的两种变化趋势,一种是向下的变化即社会的衰败,另一种是向上的变化即中国公民社会的发展。只有中国公民社会充分发展了,社会才能获得足以克服衰败的巨大力量。中国公民社会的产生和发... 详细信息

处于现代化纵深发展的中国社会,正在经历着方向相反的两种变化趋势,一种是向下的变化即社会的衰败,另一种是向上的变化即中国公民社会的发展。只有中国公民社会充分发展了,社会才能获得足以克服衰败的巨大力量。中国公民社会的产生和发展是在市场经济基础上社会发展的必然趋势;人文主义的启蒙和人性的解放是公民社会生长的精神支柱;志愿者行动对公民社会具有重要意义;公益慈善是公民社会人际关系的基本纽带。中国公民社会的建设在现有的政治体制下,还要走很长的路,还会遇到许多困难和曲折,需要我们坚持不懈地共同努力,才能把它不断推向前进。

关键词：社会衰败社会新生公民社会志愿者人文主义公益慈善

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政治文化历史变迁析论

天津社会科学 2006年第5期 47-52页

作者：李景鹏北京大学政治发展与政府管理研究所

政治文化作为社会上层建筑的重要组成部分,对经济基础有着根本性的依赖。但是其并不简单地随着经济基础的变迁而变迁,其中需要一些必要的中介因素。政治文化的变迁可分为向上的变迁和向下的变迁两种类型。中国近代政治文化的变迁,对于... 详细信息

政治文化作为社会上层建筑的重要组成部分,对经济基础有着根本性的依赖。但是其并不简单地随着经济基础的变迁而变迁,其中需要一些必要的中介因素。政治文化的变迁可分为向上的变迁和向下的变迁两种类型。中国近代政治文化的变迁,对于当代的政治文化状况有着重要的影响。当代中国的社会主义文化正在面临着自我更新的艰巨而复杂的任务。

关键词：政治文化向上变迁与向下变迁社会主义文化自我更新

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科学决策的关键——通过不可行性论证的考验

国家行政学院学报 2011年第2期 17-20,41页

作者：李景鹏北京大学北京100871

由于实际情况的复杂性,科学决策面临着巨大的挑战。然而目前的可行性报告又往往流于形式,因此提出通过不可行性报告的考验对于科学决策的重要性。论文分析了传统的可行性报告的缺陷,论证了不可行性报告的优越性以及如何通过不可行性报... 详细信息

由于实际情况的复杂性,科学决策面临着巨大的挑战。然而目前的可行性报告又往往流于形式,因此提出通过不可行性报告的考验对于科学决策的重要性。论文分析了传统的可行性报告的缺陷,论证了不可行性报告的优越性以及如何通过不可行性报告的考验使决策更加科学化的途径。论文还分析了能否接受不可行性报告与决策者的素质和思想方法的关系。最后论文指出,提倡不可行性报告的重要性并不等于完全否定可行性报告,如果两者能够进行相互否定性的论证,对科学决策来说是更为理想的。

关键词：决策可行性不可行性

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中国社会利益结构变迁的特点

北京行政学院学报 2006年第1期 1-4页

作者：李景鹏北京大学政治发展与政府管理研究所北京100871

构建社会主义和谐社会,是新一届中央领导集体从新世纪新阶段现实出发,提出的重要治国目标、治国方略和治国机制。这一重大现实命题的提出,使中国特色社会主义事业的总体布局由经济建设、政治建设、文化建设“三位一体”优化和提升为包... 详细信息

构建社会主义和谐社会,是新一届中央领导集体从新世纪新阶段现实出发,提出的重要治国目标、治国方略和治国机制。这一重大现实命题的提出,使中国特色社会主义事业的总体布局由经济建设、政治建设、文化建设“三位一体”优化和提升为包含社会建设在内的“四位一体”。面对这样一个重大的现实问题,社会科学工作者需要从不同的学科视界进行深入和系统的研究。在马克思主义的政治学看来,我们所生活和所建设的社会无疑是由众多社会成员个体、组织、团体、群体、阶层、阶级等单元或要素组合而成的复杂系统或有机体,这其中利益博弈是各类要素或单元之间的基本作用机制,利益关系是其基础性的关系,利益结构是社会系统和政治系统的深层结构,构成社会和政治运行的内在动力。本专栏的五位作者从政治学角度对社会利益关系与和谐社会建设之间深层次的关联进行学术层面的探讨,得出了比较新鲜和富有启发性的结论。

关键词：中国特色社会主义事业社会利益关系社会建设结构变迁和谐社会科学工作者笔谈中央领导集体治国方略 “四位一体”