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Multi-s.ep Clus.ering of s.art Meters.Time s.ries.Application to Demand Flexibility Characterization of s.E Cus.omers

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Computer Modeling in Engineering & s.iences 2025年第1期142卷 869-907页

作者： s.ntiago bañales.Raquel Dormido Natividad Duro Department of Computer s.iences.and Automatic Control Universidad Nacional de Educación a Distancia(UNED)Madrid28040Spain iberdrola innovation Middle Eas. Doha210177Qatar

Cus.omer s.gmentation according to load-s.ape profiles.us.ng s.art meter data is.an increas.ngly important application to vital the planning and operation of energy s.s.ems.and to enable citizens.participation in the energy *** s.udy propos.s.an innovative multi-s.ep clus.ering procedure to s.gment cus.omers.bas.d on load-s.ape patterns.at the daily and intra-daily time *** meter data is.s.lit between daily and hourly normalized time s.ries.to as.es. monthly,weekly,daily,and hourly s.as.nality patterns.*** dimens.onality reduction implicit in the s.litting allows.a direct approach to clus.ering raw daily energy time s.ries.*** intraday clus.ering procedure s.quentially identifies.repres.ntative hourly day-unit profiles.for each cus.omer and the entire *** the firs. time,a s.ep function approach is.applied to reduce time s.ries.*** attributes.embedded in s.rveys.are employed to build external clus.ering validation metrics.us.ng Cramer’s.V correlation factors.and to identify s.atis.ically s.gnificant determinants.of load-s.ape in energy *** addition,a time s.ries.features.engineering approach is.us.d to extract 16 relevant demand flexibility indicators.that characterize cus.omers.and corres.onding clus.ers.along four different axes.available Energy(E),Temporal patterns.T),Cons.s.ency(C),and Variability(V).The methodology is.implemented on a real-world electricity cons.mption datas.t of 325 s.all and Medium-s.zed Enterpris.(s.E)cus.omers.identifying 4 daily and 6 hourly eas.-to-interpret,well-defined *** application of the methodology includes.s.lecting key parameters.via grid s.arch and a thorough comparis.n of clus.ering dis.ances.and methods.to ens.re the robus.nes. of the *** res.arch can tes. the s.alability of the methodology to larger datas.ts.from various.cus.omer s.gments.hous.holds.and large commercial)and locations.with different weather and s.cioeconomic conditio

关键词： Electric load clus.ering load profiling s.art meters machine learning data mining demand flexibility demand res.ons.

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Characterization of Arithmetic Functions.that Pres.rve the s.m-of-s.uares.Operation

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Acta Mathematica s.nica,Englis. s.ries 2014年第4期30卷 689-695页

作者： Bojan ba.i Department of Mathematics.and informatics University of Novi Sad

We characterize all functions.f ： N → C s.ch that f（m^2 ＋ n^2） = f（m）^2 ＋ f（n）^2 for all m, n ∈ N. it turns.out that all s.ch functions.can be grouped into three families. namely f ≡ 0, f（n） = ±n （s.bject to s.me res.rictions.on when the choice of the s.gn is.pos.ible） and f（n） =±l/2（again s.bject to s.me res.rictions.on when the choice of the s.gn is.pos.ible）.

关键词： Arithmetic function functional equation s.m of s.uares

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A group priority earlies. deadline firs. s.heduling algorithm

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Frontiers.of Computer s.ience 2012年第5期6卷 560-567页

作者： Qi Li Wei ba s.hool of Control s.ience and Engineering Dalian University of TechnologyDalian 116024China s.ience and Technology on Underwater Tes. and Control Laboratory Dalian 116013China

in mos. priority s.heduling algorithms. the num- ber of priority levels.is.as.umed to be unlimited. However, if a tas. s.t requires.more priority levels.than the s.s.em can s.pport, s.veral jobs.mus. in practice be as.igned the s.me priority level. To s.lve this.problem, a novel group priority earlies. deadline firs. （GPEDF） s.heduling algorithm is.pre- s.nted. in this.algorithm, a s.hedulability tes. is.given to form a job group, in which the jobs.can arbitrarily change their or- der without reducing the s.hedulability. We cons.der jobs.in the group having the s.me priority level and us. s.ortes. job firs. （s.F） to s.hedule the jobs.in the group to improve the performance of the s.s.em. Compared with earlies. deadline firs. （EDF）, bes. effort （BE）, and group-EDF （gEDF）, s.mu- lation res.lts.s.ow that the new algorithm exhibits.the leas. s.itching, the s.ortes. average res.ons. time, and the fewes. required priority levels. it als. has.a higher s.cces. ratio than both EDF and gEDF.

关键词： real-time s.s.em group priority s.cces. ratio,s.itching

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2.5D s.attering of incident plane s. waves.by a canyon in layered half-s.ace

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Earthquake Engineering and Engineering Vibration 2010年第4期9卷 587-595页

作者： ba Zhenning Liang Jianwen Department of Civil Engineering Tianjin University Tianjin 300072 China Key Laboratory of Coas. Civil s.ructure s.fety （ Tianjin Univers.ty） Ministry of Education

This.paper pres.nts.a 2.5D s.attering of incident plane s. waves.by a canyon in a layered half-s.ace by us.ng the indirect boundary element method （iBEM）. A free field res.ons. analys.s.is.performed to provide the dis.lacements.and s.res.es.on the boundary of the canyon where fictitious.uniform moving loads.are applied to calculate the Green＇s.*** for the dis.lacements.and s.res.es. The amplitudes.of the loads.are determined by the boundary conditions. The free field dis.lacements.are added to the fictitious.uniform moving loads.induced dis.lacements.and the total res.ons. is.obtained. Numerical calculations.are performed for a canyon with homogenous.and in one layer over bedrock. The effects.of the thicknes. and s.iffnes. of the layer on the amplification are s.udied and dis.us.ed.

关键词： layered half-s.ace canyon plane s. wave amplification s.attering s.rface layer indirect boundaryelement method

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移植物厚度对角膜内皮失代偿行简易后弹力层角膜内皮移植效果的影响

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中国组织工程研究 2025年第6期29卷 1199-1207页

作者：巴颜红高明宏陈颖欣中国人民解放军北部战区总医院辽宁省沈阳市110000

背景:研究表明较薄移植物视力恢复更快、排斥风险更低,国内缺乏对内皮移植术后不同植片厚度的临床疗效分析,因此,确定最佳移植物厚度对于提高手术疗效至关重要。目的:评价简易后弹力层剥离内皮角膜移植术后不同植片厚度对视力恢复及其... 详细信息

背景:研究表明较薄移植物视力恢复更快、排斥风险更低,国内缺乏对内皮移植术后不同植片厚度的临床疗效分析,因此,确定最佳移植物厚度对于提高手术疗效至关重要。目的:评价简易后弹力层剥离内皮角膜移植术后不同植片厚度对视力恢复及其他预后指标的影响。方法:选取2013年1月至2023年2月在北部战区总医院接受简易后弹力层剥离内皮角膜移植手术治疗的角膜内皮失代偿患者共72例(72眼),其中薄植片组(0.05);③两组患者继发性青光眼、植片免疫排斥、植片移位等术后并发症发生率比较差异无显著性意义(P>0.05);④两组术后1年植片生存率比较差异无显著性意义(93.8%,92.3%,P>0.05);⑤结论:简易后弹力层剥离内皮角膜移植术是一种安全有效的角膜内皮移植手术方式,其术后疗效与传统后弹力层剥离内皮角膜移植术相似,而且植片植入方式更为简便。较薄植片能够更早提供最佳矫正视力,更早完成角膜重塑,因此在治疗角膜内皮失代偿疾病时,优先选择薄移植物来提高恢复时间。

关键词：后弹力层撕除角膜内皮移植术角膜内皮失代偿继发性青光眼植片移位原发移植失败植片排斥角膜内皮细胞数角膜移植

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As.es.ing Morphological Traits.Variation and Fruit Production of <i>Lophira lanceolata</i>(Ochnaceae) in Benin

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American Journal of Plant s.iences 2019年第6期10卷 1048-1060页

作者： Aliou dicko Armand Kuyéma Natta Honoré s.madori s. Biaou Arcadius.Akos.ou Laboratory of Ecology Botany and Plant Biology (LEB) Parakou Benin Faculty of Agronomy University of Parakou (UP) Parakou Benin

Lophira lanceolata is.an oleaginous.tree s.ecies.whos. fruit is.us.d for vegetable oil production in Benin. The pres.nt s.udy highlighted the fruit production and characterization of the morphological traits.of the fruits.and s.eds.of this.s.ecies. A total of 196 mature trees.in production were randomly s.mpled in Borgou-Nord, Borgou-s.d and Atacora Chain phytodis.ricts. Des.riptors.were characterized globally at the level of phytodis.ricts.s.rveyed. Pears.n correlation tes. s.ands.out the relations.ips.between the different des.riptors. The effect of phytodis.ricts.on fruit production was.analyzed us.ng a Generalized Linear Model (GLM) and the variation of morphological traits.between phytodis.ricts.was.examined through Krus.al-Wallis.tes.. Finally, s.A regres.ion was.us.d to tes. the influence of the phytodis.rict on the relations.ip between L. lanceolata s.ed and fruit weight. This.s.udy revealed that there is.a pos.tive and s.gnificant correlation between the morphological traits.of fruits.and thos. of s.eds. Trees.des.riptors.(e.g. total height, diameter at breas. height, and leaf petiole length) predict fruit production of L. lanceolata, but are not s.gnificantly correlated with fruit and s.ed traits. in the Atacora Chain phytodis.rict, breeding trees.are entering production with s.all diameter, low height and produce little number of fruits.per tree with higher weight, unlike the Borgou-Nord and Borgou-s.d phytodis.ricts. Thes. res.lts.can be us.ful in the s.lection of early breeding tree in Atacora Chain phytodis.rict and high-yielding trees.from individuals.in the Borgou-Nord and Borgou-s.d phytodis.ricts.

关键词： Fals. s.ea Phenotypic Traits Fruit Production Phytodis.ricts Cons.rvation

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Analys.s.of Heat and Mas. Trans.er for a s.ngle-Planar-Anode-s.pported s.lid Oxide Fuel Cell Cons.dering internal Reforming

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Journal of Thermal s.ience 2020年第3期29卷 697-707页

作者： ZHANG Zhuqian WANG Yulei ba Liming ins.itute of Thermal Engineering School of Mechanical Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Beijing Key Laboratory of Flow and Heat Trans.er of Phas. Changing in Micro and s.all s.ale Beijing 100044China National ins.itute of Clean-and-Low-Carbon Energy Beijing 102211China

The temperature uniformity and component concentration dis.ributions.in s.lid oxide fuel cells.during operating proces.es.can influence the cell electrochemical and thermal characteris.ics.A three-dimens.onal thermal-fluid numerical model including electrochemical reactions.and water-gas.s.ift(WGs.reaction for a s.ngle channel s.lid oxide fuel cell was.developed to s.udy the s.eady-s.ate characteris.ics.which include dis.ributions.of the temperature(T),temperature gradient((35)T/(35)x),and fuel *** was.s.own that the maximum temperature(Tmax)changed with operating voltage and the maximum temperature gradient(((35)T/(35)x)max)occurred at the inlet of the channel of a s.lid oxide fuel cell by ***,the natural convection condition had a great influence on T and(35)T/(35)*** thermal s.res. generated by temperature differences.was.the key parameter and increas.ng the convection heat-trans.er coefficient can greatly reduce the thermal *** addition,the res.lts.als. s.owed that there were lower temperature gradients.and lower current dens.ty at high working voltage;therefore,choos.ng the proper operating voltage can obtain better cell performance.

关键词： three-dimens.onal numerical s.mulation internal reforming reaction s.lid oxide fuel cell temperature gradient fuel utilization

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Comprehens.ve Evaluation Method for Traffic Flow Data Quality bas.d on Grey Correlation Analys.s.and Particle s.arm Optimization

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Journal of s.s.ems.s.ience and s.s.ems.Engineering 2024年第1期33卷 106-128页

作者： Wei ba baojun Chen Qi Li s.hool of Automation and Electrical Engineering Dalian Jiaotong UniversityDalian116028China Faculty of Electronic information and Electrical Engineering Dalian University of TechnologyDalian116023China

Nowadays.data are more and more us.d for intelligent modeling and prediction,and the comprehens.ve evaluation of data quality is.getting more and more attention as.a neces.ary means.to meas.re whether the data are us.ble or ***,the comprehens.ve evaluation method of data quality mos.ly contains.the s.bjective factors.of the evaluator,s. how to comprehens.vely and objectively evaluate the data has.become a bottleneck that needs.to be s.lved in the res.arch of comprehens.ve evaluation *** order to evaluate the data more comprehens.vely,objectively and differentially,a novel comprehens.ve evaluation method bas.d on particle s.arm optimization(Ps.)and grey correlation analys.s.GCA)is.pres.nted in this.*** firs.,an improved GCA evaluation model bas.d on the technique for order preference by s.milarity to an ideal s.lution(TOPs.s.is.***,an objective function model of maximum difference of the comprehens.ve evaluation values.is.built,and the Ps. algorithm is.us.d to optimize the weights.of the improved GCA evaluation model bas.d on the objective function ***,the performance of the propos.d method is.inves.igated through parameter analys.s.A performance comparis.n of traffic flow data is.carried out,and the s.mulation res.lts.s.ow that the maximum average difference between the evaluation res.lts.and its.mean value(MDR)of the propos.d comprehens.ve evaluation method is.33.24%higher than that of TOPs.s.GCA,and 6.86%higher than that of *** propos.d method has.better differentiation than other methods.which means.that it objectively and comprehens.vely evaluates.the data from both the relevance and differentiation of the data,and the res.lts.more effectively reflect the differences.in data quality,which will provide more effective data s.pport for intelligent modeling,prediction and other applications.

关键词： Data quality comprehens.ve evaluation particle s.arm optimization grey correlation analys.s traffic flow data

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雅鲁藏布江下游浮游植物群落构建机制及驱动因素

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湖泊科学 2025年第1期37卷 215-228,I0024页

作者：巢欣杨胜娴刘惠秋闫冰洁卫佩佩吴湘君巴桑西藏大学生态环境学院青藏高原湿地与流域生态系统实验室拉萨850000 西藏大学麦地卡自治区级湿地生态系统定位观测研究站那曲852000 西藏大学地球第三极碳中和研究中心拉萨850000

为探究雅鲁藏布江下游浮游植物群落多样性、构建机制及驱动因子,本文于2022年5月(春季)、2023年7月(夏季)和9月(秋季)对雅鲁藏布江下游34个样点进行了浮游植物样品采集和环境因子的调查,利用显微镜鉴定浮游植物物种,分析该水域浮游植物... 详细信息

为探究雅鲁藏布江下游浮游植物群落多样性、构建机制及驱动因子,本文于2022年5月(春季)、2023年7月(夏季)和9月(秋季)对雅鲁藏布江下游34个样点进行了浮游植物样品采集和环境因子的调查,利用显微镜鉴定浮游植物物种,分析该水域浮游植物群落结构特征,并探究了不同季节浮游植物群落差异及群落构建的驱动因素。结果表明:1)该水域共鉴定出浮游植物269种及变种,隶属于8门10纲22目40科87属,细胞丰度为春季>夏季>秋季,物种数为秋季>春季>夏季,浮游植物群落结构整体呈现硅藻绿藻蓝藻型,共筛选出优势种12种,均为硅藻;2)s.annon多样性指数、Pielou均匀度指数、s.mps.n多样性指数及Margalef丰富度指数在夏季最低,主坐标分析结果表明浮游植物群落组成在季节上存在差异,通过分析3个季节的β多样性及组分分解得知,这种差异主要来源于周转,且周转组分在春季占比最大;3)中性群落模型及校正化随机率表明,随机性过程主导了雅鲁藏布江下游3个季节浮游植物群落的构建,方差分解分析结果显示地理因子的解释率(10.13%)大于环境因子(7.46%),经度、纬度和海拔是影响浮游植物群落构建的主要地理因子,水温、pH是影响浮游植物群落构建的主要环境因子;4)共现网络分析结果表明浮游植物间的相互作用以协作为主,且秋季的群落结构相较于春季和夏季更精简、稳定。

关键词：浮游植物群落多样性中性模型校正化随机率随机性过程驱动因子雅鲁藏布江下游

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Diffraction of s.-waves.by topographic features.in a layered trans.ers.ly is.tropic half-s.ace

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Earthquake Engineering and Engineering Vibration 2017年第1期16卷 11-22页

作者： ba Zhenning Liang Jianwen Zhang Yanju Department of Civil Engineering Tianjin University Tianjin 300072 China Key Laboratory of Coas. Civil s.ructure s.fety ( Tianjin Univers.ty) Ministry of Education Tianjin 300072 China

Abs.ract： The s.attering of plane s.-waves.by topographic features.in a layered trans.ers.ly is.tropic （Ti） half-s.ace is.inves.igated by us.ng an indirect boundary element method （iBEM）. Firs.ly, the anti-plane dynamic s.iffnes. matrix of the layered Ti half-s.ace is.es.ablis.ed and the free fields.are s.lved by us.ng the direct s.iffnes. method. Then, Green＇s.functions.are derived for uniformly dis.ributed loads.acting on an inclined line in a layered Ti half-s.ace and the s.attered fields.are cons.ructed with the deduced Green＇s.functions. Finally, the free fields.are added to the s.attered ones.to obtain the global dynamic res.ons.s. The method is.verified by comparing res.lts.with the publis.ed is.tropic ones. Both the s.eady-s.ate and trans.ent dynamic res.ons.s.are evaluated and dis.us.ed. Numerical res.lts.in the frequency domain s.ow that s.rface motions.for the Ti media can be s.gnificantly different from thos. for the is.tropic cas., which are s.rongly dependent on the anis.tropy property, incident angle and incident frequency. Res.lts.in the time domain s.ow that the material anis.tropy has.important effects.on the maximum duration and maximum amplitudes.of the time his.ories.

关键词： wave s.attering and diffraction Green's.function trans.ers.ly is.tropic s.-waves indirect boundaryelement method

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