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An ideal interval method of multi-objective decision-making for comprehensive assessment of water resources renewabi{1.ty

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Science china(Technological Sciences) 2004年第z1期47卷 42-50页

作者： yang xiaohua1, yang zhifeng1,{2., state key laboratory of water environment simulation, beijing normal univer- sity, beijing 100875, china 2. school of environment, key laboratory for water and Sediment Sciences of Ministry of Education, {12. normal university, beijing 100875, china 3. water Resources and Hydropower Planning and Design General Institute, MWR, {12. 100011, china beijing {1. Univ Sch Environm State Key Lab Water Environm Simulat Beijing 100875 Peoples R China beijing {1. Univ Sch Environm Key Lab Water & Sediment Sci Minist Educ Beijing 100875 Peoples R China MWR Water Resources & Hydropower Planning & Design Ge Beijing 100011 Peoples R China

In order to estimate water resources renewabi{1.ty scientifically, an Ideal Interval Method of Multiple Objective Decision-Making (IIMMODM) is presented. This method is developed through improving an ideal point method of multiple objective decision-making. The ideal interval is obtained with assessment standard instead of ideal points. The weights are decided by using the basic point and gray code accelerating genetic algorithm. This method has synthesized the expert’s suggestion and avoided giving a mark for the objective again. It could solve the comp{1.cated problem of compatible or incompatible multi-objective assessment. The principle of IIMMODM is presented in this paper. It is used to assess the water resources renewabi{1.ty for nine administrative divisions in the Yellow River basin. The result shows that the water resources renewabi{1.ty in the Yellow River basin is very low. Compared with the gray associate analysis method, fuzzy synthesis method and genetic projection pursuit method, the IIMMODM is easier to use. Compared with the ideal point method of multiple objective decision-making, the IIMMODM has good robustness, which is app{1.cable to the comprehensive assessments of water resources.

关键词： water resources renewability, comprehensive assessment, multiple objective decision-making,ideal interval, Yellow River basin.

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Node ordinal encoded genetic algorithm for the optimal allocation of water resources

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Progress in Natural Science:Materials International 2005年第5期15卷 448-452页

作者： yang xiaohua1*, yang {2. 1,2. shen zhenyao1 and li jianqiang3(1. state key laboratory of water environment simulation, school of environment, beijing normal univer{12., beijing 100875, china 2. key laboratory for water and Sediment Sciences Ministry of Education, school of environment, beijing normal univer{12., beijing 100875, china 3. water Resources and Hydropower Planning and Design General Institute, MWR, beijing 100011, china) state {1. {2. of water environment simulation School of Environment Beijing Normal University Beijing 100875 China key {1. for {2. and Sediment Sciences Ministry of Education School of Environment Beijing Normal University Beijing 100875 China water Resources and Hydropower Planning and Design General Institute MWR Beijing 100011 China

A new method, node ordinal encoded genetic algorithm (NOEGA), is proposed for solving water resources optimal allocation problems, in which the capacity of water resources is split into a number of smaller parts so that successive operations can be overlapped. Our objective is to maximize the whole benefit function. To overcome the “dimensionality and algorithm complexity curse” while searching for solutions and looking for an optimal solution, the operations of one-point crossover operator, gene exchange operator, gene random operator, gene shift operator and node ordinal strings are established. It is proved to be an effective optimal method in searching for global solutions. The NOEGA does not need a diver{2. of initial population, and it does not have the problem of immature convergence. The results of two cases show that using NOEGA to solve the optimal allocation model is very efficient and robust. In addition, the algorithm complexity of NOEGA is discussed.

关键词： water resources optimal allocation node ordinal code genetic algorithm.

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Parameter determination to calculate water {1.al capacity in Zhangweinan Canal Sub-basin in{2.

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Journal of environmental Sciences 2010年第6期22卷 904-907页

作者： Yingxia li ,Ruzhi Qiu,zhifeng yang,Chunhui li,Jingshan Yu{2.,school of environment,beijing normal university,beijing,100875,china. [a] state key laboratory of water environment simulation School of Environment Beijing Normal University Beijing 100875 China

Zhangweinan canal sub-basin （ZWN） has the most serious water resource shortage and water pollution problems in north of{2.. To calculate the water environmental capacity in ZWN, determination methods for design flow rates and degradation coefficients were discussed in this study. Results showed that 90% and 50% hydrological guarantee flow rates were suitable to be the design flow rates for rainy and dry seasons, respectively. Degradation coefficients of CODMn and NH3-N were 0.2. day^-1.and 0.1. day^-1.for branch streams and 0.5 day^-1.and 0.2. day^-1.for mainstreams, respectively in ZWN. With one-dimensional water quality simulation model, water environmental capacities were calculated to be 82.1.9 tons/yr for CODMn and 2.94 tons/yr for NH3-N in ZWN.

关键词： degradation coefficient design flow rate water {1.al capacity Zhangweinan

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The electron structure and photocatalytic activity of Ti（IV） doped Bi2.3

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Science china Chemistry 2011年第1期 179-184页

作者： YIN liFeng1,NIU JunFeng1,shen zhenyao1 & SUN Ying2.1{2. key laboratory of water environment simulation school of environment,beijing normal {12.sity,beijing 100875,china 2.ollege of Science,china Agricultural {12.sity,beijing 100193,china

Density functional theory (DFT) plays a significant role in the development of visible {1.ght responsive *** on the first-principles plane-wave ultrasoft pseudopotential (USPP) method,the crystal structures of α,β,γ,and δ-Bi2.3 were optimally calculated for the total density of {2.s (TDOS) and the partial density of {2.s (PDOS) of Bi,O *** calculation for Ti(IV) doped Bi2.3 supercell was carried *** effects of Ti(IV)-doping on the electron structures and {1.ght absorption properties of various Bi2.3 were *** results showed that Ti 3d orbital appeared in the forbidden band of Bi2.3 and hybridized with O 2.,Bi 6p *** narrowed band gap (Eg) and red-shift of {1.ght absorption edge are responsible for the enhanced photocatalytic activity of *** β-Bi2.3 and Ti-doped β-Bi2.3 were prepared by a hydrothermal synthesis *** improvement of the photocatalytic activity of Bi2.3 has also been verified by the characteristics of the UV-vis diffuse reflection spectrum and the experimental evaluation of the photocatalytic degradation of crystal violet in aqueous solution.

关键词： Ti(IV) doping Bi2.3 electron structure visible light photocatalytic activity density functional theory

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A heuristic algorithm for cube packing with time schedule

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Science china(Information Sciences) 2010年第1期53卷 18-29页

作者： li Wei1, HUANG WenQi2. JIANG DongChen1 & liU XiangLong1 1state key {2. of Software Development environment, Beihang university, beijing 100191, china 2.8} of Computer Science and Technology, Huazhong university of Science and Technology, Wuhan 430074, china 1. state {1. {2. of Software Development environment Beihang University Beijing 100191 China2. School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

Packing problem has been proved to be an NP-hard problem. Many algorithms such as simulation annea{1.ng algorithm, genetic algorithm and other heuristic algorithms have been proposed to solve twodimensional and three-dimensional packing problem. To solve the cube packing problem with time schedule, this paper first introduces some concepts such as packing level, space distance and average neighbor birth order and then proposes a greedy algorithm. The algorithm tries every feasible corner greedily to calculate the space uti{1.zation, packing level, space distance, average neighbor birth order of this placement, and chooses the best placement according to these criteria. Theoretical analysis indicates that the time complexity of this algorithm is O(A2.2.2. 2.5). The experiments show that the average space uti{1.zation of non-guillotine cutting test cases is 98.81., and the average space uti{1.zation of guillotine cutting test cases achieves 99.87%. Furthermore, optimal solutions of more than half cases are achieved by this algorithm. The experimental results show that this algorithm can solve the problem of cube packing with time schedule effectively and effciently.

关键词： cube packing problem time schedule packing level space distance average neighbor birth order

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Factors affecting land dissection density in geomorphological regions of{1.

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Journal of Mountain Science 2024年第4期21卷 1372-1387页

作者： SUN Xiaolin ZHAO Yinjun PENG Peihao CHENG Weiming WEI Yongping {1. Ronghao li Jiaxu College of Earth Sciences Chengdu University of TechnologyChengdu 610059China school of Civil Engineering Guangxi Polytechnic of ConstructionNanning 530001China key {1. of {2. Change and Resources Use in Beibu Gulf Ministry of EducationNanning Normal UniversityNanning 530001China key {1. of Earth Surface Process and Intelligent {2.(Guangxi) Nanning Normal UniversityNanning 530001China state {1. {2. of Resources and environmental Information System Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China school of Earth and {1.al Sciences The University of QueenslandBrisbane 4702Australia school of Geography and Planning Nanning Normal UniversityNanning 530001China

Land dissection density(LDD)provides morphological evidence regarding prior intense soil erosion and quantifies the distribution of land dissections.A comprehensive understanding of the potential factors influencing the spatial pattern and value of the LDD is vital in geological disasters,soil erosion,and other related *** dissection phenomena in{1. affects large areas with different morphological,pedological,and climatic *** studies have focused on the potential factors influencing the LDD at a {2.shed ***,these results are insufficient to reflect the status quo of dissection development and its primary influencing factors on a national ***’s spatial patterns and the dominant factors at a regional scale in millions of square kilometers remain to be *** study used the geomorphon-based method and the geographical detector model to quantify the spatial pattern of LDD over{1. and identify the dominant factors affecting this pattern in{1.’s six first-order geomorphological regions(GR1.GR6).The results yield the following findings:(1.LDD in{1. ranges from 0~4.55 km/km^(2.,which is larger in central and eastern regions than in other regions of{1.;(2.dominant factors and their dominant risk subcategories vary with each geomorphological region’s primary internal and external forces;(3)the influence of natural factors is more significant on the large regional scale in millions of square kilometers compared to anthropogenic factors;relief degree of land surface(RDLS)is dominant in GR1.GR2.and GR5;the slope is dominant in GR6,soil type is dominant in GR3 and GR4,and lithology plays a critical role in the dominant interactions of GR3,GR4,and GR6;(4)the interactions between factors on LDD’s spatial pattern have a more significant effect than individual factors.

关键词： Land dissection density Influencing factors Regional scale Spatial pattern Geographical detector model Geomorphon-based method china

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Characteristics and influencing factors of greenhouse gas emissions from reservoirs in the Yellow River Basin:A Meta-analysis

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Science china Earth Sciences 2024年第7期67卷 2210-2225页

作者： Shurui HUANG Peijia ZHANG Wenxiu ZHENG Jiajia ZHANG yang {1. Yuanjian WANG Enhui JIANG Shaoda {1.U Xinghui XIA state {1. {2. of water environment simulation School of EnvironmentBeijing Normal UniversityBeijing 00875China Yellow River Institute of Hydraulic Research Yellow River Conservancy CommissionZhengzhou 450003China

Reservoir construction and operation profoundly alter the hydrological,hydrodynamic,and carbon and nitrogen cycling processes of ***,current research still lacks a systematic understanding of the characteristics of greenhouse gas(GHG)emissions from reservoirs in arid/semi-arid *** study integrates existing monitoring data to discuss the characteristics of GHG emissions from reservoirs in the Yellow River Basin and illustrate the controlling factors and underlying mechanism of these *** results indicate that while CO_(2. emission flux from reservoirs is lower than that from river channels,the emission fluxes of CH_(4) and N_(2.O are 1.9 times and 1. times those from rivers,respectively,indicating that the emission of GHG with stronger radiative effect is significantly enhanced in *** to the reservoirs in humid climates(e.g.,the Three Gorges Reservoir),reservoirs in the Yellow River Basin exhibit relatively lower emissions of CO_(2. and CH_4 due to lower organic matter concentrations,but significantly higher N_(2.O emissions due to higher nitrogen *** Carlo simulations for 2.7 reservoirs in the Yellow River Basin showed that total emission of the three GHGs is 3.05 Tg CO_(2.-eq yr^(-1.,accounting for 0.39% of the total emission from global reservoirs and lower than the area percentage of the basin(0.53%).This study has important implications on revealing the GHG emission characteristics and control mechanisms of reservoirs in arid/semi-arid regions.

关键词： Yellow River Basin Reservoir Greenhouse gas Emission flux water qua{1.ty

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The Journey/DAO/TAO of Embodied Intelligence: From Large Models to Foundation Intelligence and Parallel Intelligence

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1313-1316页

作者： Tianyu shen Jin{1.n Sun Shihan Kong Yutong Wang Juanjuan {1. Xuan {1. Fei-Yue Wang College of Information Science and Technology Beijing University of Chemical TechnologyBeijing 100029China school of Electrical and Information Engineering Jiangsu UniversityZhenjiang 212013China state {1. {2. for Turbulence and Complex Systems Department of Advanced Manufacturing and RoboticsCollege of EngineeringPeking UniversityBeijing 100871China state {1. {2. of Multimodal Artificial Intelligence Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China Peng Cheng laboratory Shenzhen 518000China state {1. {2. for Management and Control of Complex Systems Chinese Academy of SciencesBeijing 100190 Faculty of Innovation Engineering Macao University of Science and TechnologyMacao 999078China IEEE

THE tremendous impact of large models represented by ChatGPT[1.-[3]makes it necessary to con-sider the practical applications of such models[4].However,for an artificial intelligence(AI)to truly evolve,it needs to possess a physical“body”to transition from the virtual world to the real world and evolve through interaction with the real *** this context,“embodied intelligence”has sparked a new wave of research and technology,leading AI beyond the digital realm into a new paradigm that can actively act and perceive in a physical environment through tangible entities such as robots and automated devices[5].

关键词： Intelligence DAO TAO

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Analyzing the surface passivity effect of germanium oxynitride:a comprehensive approach through first principles simulation and interface {1. den{2.

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Nuclear Science and Techniques 2024年第5期35卷 74-84页

作者： sheng-Jie Du Xiu-Xia {1. yang Tian Yuan-Yuan {1.u Ke Jia Zhong-Zheng Tang Jian-Ping Cheng Zhi Deng Yu-Lan {1. Zheng-Cao {1. Sha-Sha Lv College of Nuclear Science and Technology Joint laboratory of Jinping Ultra‑Low Radiation Background Measurement of Ministry of Ecology and {1. {2. laboratory of Beam Technology of Ministry of Education Beijing Normal UniversityBeijing Normal UniversityBeijing 100875China Joint Research Center Nuctech Company LimitedBeijing 100084China Department of Engineering Physics Key Laboratory of Particle&Radiation Imaging of Ministry of EducationTsinghua UniversityBeijing 100084China key {1. of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

High-purity germanium(HPGe)detectors,which are used for direct dark matter detection,have the advantages of a low threshold and excellent energy *** surface passivation of HPGe has become crucial for achieving an extremely low energy *** this study,first-principles simulations,passivation film preparation,and metal oxide semiconductor(MOS)capacitor characterization were combined to study surface *** calculations of the energy band structure of the -H,-OH,and -NH_({1. passivation groups on the surface of Ge were performed,and the interface state den{{1. and potential with five different passivation groups with N/O atomic ratios were accurately analyzed to obtain a stable surface *** on the theoretical calculation results,the surface passivation layers of the Ge_({1.ON_({1. film were prepared via magnetron sputtering in accordance with the optimum atomic ratio *** microstructure,C-V,and I-V electrical properties of the layers,and the passivation effect of the Al/Ge_({1.ON_({1./Ge MOS were characterized to test the interface state *** mean interface state den{{1. obtained by the Terman method was 8.4×1.^(1.) cm^(-{1. eV^(-1..The processing of germanium oxynitrogen passivation films is expected to be used in direct dark matter detection of the HPGe detector surface passivation technology to reduce the detector leakage currents.

关键词： Surface passivation High purity germanium detector Germanium nitrogen oxide Interface state den{1.

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Is urban development an urban river killer? A case study of Yongding Diversion Channel in beijing,{1.

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Journal of environmental Sciences 2014年第6期26卷 1232-1237页

作者： Xi Wang Junqi li Yingxia li zhenyao shen Xuan Wang {2. yang Inchio Lou state {1. {2. of water environment simulation School of Environment Beijing Normal University beijing {1.{2. of Civil Engineering and Architecture Department of Civil and environmental Engineering University of Macao

The high population and concrete environment alter urban areas by changing temperature, rainfall runoff, and {1. resource utilization activities. This study was conducted to investigate the {1. quality features of the Yongding Diversion Channel in beijing, china, and its relationship with rainfall and urban development. Monthly {1. quality data were obtained from April to October of 2.04 at monitoring sites of Sanjiadian, Gaojing, Luodaozhuang, and Yuyuangtan. The monthly {1. quality grades from 2.07 to 2.1. were also investigated and compared with those of other rivers. Dissolved oxygen and pH showed greater decreases after one or two moderate rainfall events than several light rainfall events. The potassium permanganate index （CODMn）, ammonia nitrogen （NH3-N） and total phosphorus （TP） increased more after several light rainfall events than after one or two moderate or heavy rainfall events. Pollutant concentrations （CODMn, NH3-N, TP） in downstream regions showed greater changes than those in upstream areas after heavy rainfall events. Intense human activities around the channel greatly influenced the {1. quality of the channel in rainy season because of runoff pollution; however, heavy rainfall had a strong dilution effect on the pollutant concentrations in rivers. Overall, urban development has obviously deteriorated the {1. quality of the Yongding Diversion Channel as indicated by an increase in the {1. quality index from 3.2. in 2.08 to 4.55 in 2.1.. The Pearson correlation between monthly rainfall and {1. quality indices from 2.07 to 2.1. ranged from 0.1.9}6 to 0.6968, generally becoming weaker as rainfall and rainfall runoff became more random and extreme.

关键词： rainfallurban development water qua{1.ty indices Yongding Diversion Channel

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