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Energy consumption of 270 schools in Tianjin, China

Frontiers in Energy 2015年第2期9卷 217-230页

作者： Jincheng xing Junjie CHEN Jihong ling School of Environmental Science and Engineering Tianjin UniversityTianjin 300072 China

With the rapid development of education cause, the increasing energy consumption of school buildings is gradually causing widespread concern in recent years in China. This paper presented an analysis of energy consumption of 270 schools located in the city of Tianjin, China. The analysis focused specifically on calculating the space heating energy consumption indexes and non-heating energy consumption indexes of different types of schools, aiming at providing reliable and precise data for the government to elaborate policies and measures. The space heating energy consumption of schools adopting district heating and gas boiler were 92.04 kWh/（m2. a） and 64.25 kWh/（m2. a）, respectively. Comparing to the schools without a canteen, the non-heating energy consumption index of schools with a canteen can increase by 8%-37%. Furthermore, clustering of different energy sources, the total primary energy consumption indexes were also presented. Space heating energy consumption accounted for approximately 64%-79% of the total primary energy consumption. When using time-sharing control and self- contained gas boiler instead of district heating, an amount of almost 27.8 kWh/（mZ-a） and 77.5 kWh/（m2.a） can be saved respectively. Through extensive statistical analysis of the data collected, this paper demonstrated that gross floor area, heating energy source and canteen had a close relationship with the total primary energy consumption regarding complete schools. Eventually, a linear regression equation was established to make a simple prediction about the total energy consumption of existing complete schools and to estimate the energy consumption of complete schools to be built.

关键词： schools energy consumption index primaryenergy energy saving regression analysis

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Establishment and analyses on the unified horizontal crustal velocity fields in the Chinese mainland

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Acta Seismologica Sinica(English Edition) 2001年第5期14卷 483-490页

作者： LI yan-xing First Crustal Deformation Monitoring Center China Seismological Bureau Tianjin China Shanghai Observatory Chinese Academy of Sciences Shanghai China

The related data of GPS networks in the Chinese mainland and its peripheral areas are collected from internet sites in the paper. And various data fusion methods are presented based on the collected GPS data. Thus the unified horizontal crustal velocity fields can be established in the Chinese mainland and its peripheral areas. The available data of 423 GPS sites are applied to the velocity fields and its area gets to 1.2×107 km2. By analyzing the velocity fields, the basic spatial distribution feature of the horizontal crustal motion in the Chinese mainland and its peripheral area can be obtained preliminarily. Meanwhile, the range of the velocity fields in the Chinese mainland affected by the collision force of India plate to Eurasia plate and the problem of principal direction of the force from India plate are discussed.

关键词： Feature of horizontal motion Fusion of velocity fields GPS networks

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Reinforcement Learning-Based Dynamic Order Recommendation for On-Demand Food Delivery

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Tsinghua Science and Technology 2024年第2期29卷 356-367页

作者： xing Wang ling Wang Chenxin Dong Hao Ren Ke xing Department of Automation Tsinghua UniversityBeijing 100080China School of Mechanical and Automotive Engineering Qingdao Hengxing University of Science and TechnologyQingdao 266100China Meituan Beijing 100015China

On-demand food delivery(OFD)is gaining more and more popularity in modern *** a kernel order assignment manner in OFD scenario,order recommendation directly influences the delivery efficiency of the platform and the delivery experience of *** paper addresses the dynamism of the order recommendation problem and proposes a reinforcement learning solution *** actor-critic network based on long short term memory(LSTM)unit is designed to deal with the order-grabbing conflict between different ***,three rider sequencing rules are accordingly proposed to match different time steps of the LSTM unit with different *** test the performance of the proposed method,extensive experiments are conducted based on real data from Meituan delivery *** results demonstrate that the proposed reinforcement learning based order recommendation method can significantly increase the number of grabbed orders and reduce the number of order-grabbing conflicts,resulting in better delivery efficiency and experience for the platform and riders.

关键词： on-demand food delivery order recommendation reinforcement learning actor-critic network long short term memory

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Efficiency and Mechanism of Phosphorus Removal by Coagulation of Iron-manganese Composited Oxide

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Chemical Research in Chinese Universities 2009年第2期25卷 224-227页

作者： yanG yan-ling LI xing GUO Can-xiong ZHAO Fu-wang JIA Feng Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering Beijing University of Technology Beijing 100124 P. R. China College of Science Beijing University of Chemical Technology Beijing 100020 P. R. China

Iron-manganese composited oxide（FeMnO） was prepared with potassium permanganate and ferrous salt. Interface performance, charge property and structure topography of the FeMnO were investigated. Coagulation efficiency and pollution removal mechanism of the FeMnO were approached. Results show that the main compositions of the FeMnO are δ-manganese dioxide and ferric hydroxide. The specific surface area is about 146.22 m^2/g. The FeMnO contains rich hydroxyl with extremely strong adsorption action and chemical adsorption activity. The zero charge point of the oxide in pure water is about 8.0 of pH value. Under neutral pH value conditions, the FeMnO particle surface carried positive charges. The FeMnO particles are quasi-spherical micro-particles with irregular sizes adjoined each other to form net construction. Phosphorus removal efficiency of the FeMnO is remarkable, the total dissoluble phosphorus of settled water can be reduced below detecting level（0.3 μtg/L） at a FeMnO dosage of 6 mg/L, and total phosphorus below detecting level at a FeMnO dosage of 10 mg/L, for water samples containing total phos- phorus of 1281.70 μg/L and total dissoluble phosphorus of 1187.91 μtg/L. The mechanism of effective coagulation for phosphorus removal is combined results of multiple actions of adsorption, charge neutralization, adsorption/bridging and so on.

关键词： Iron-manganese composited oxide Phosphorus removal Coagulation Mechanism Drinking water treatment

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In(OTf)_3 catalyzed allylation reaction of imines with tetraallyltin

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Chinese Chemical Letters 2009年第1期20卷 40-43页

作者： Xiao Ning Wei ling yan Liu Bing Wang Wei xing Chang Jing Li The State Key Laboratory Elemento-Organic Chemistry Institute of Elemento-Organic Chemistry Nankai University Tanjin 300071 China

In the presence of catalytic amount of In（OTf）3 （10 mol%）, a series of aldimines reacted with tetraallyltin in a 2：1 molar ratio to afford the corresponding homoallylic amines in good yields. The good atom efficiency was achieved under mild reaction conditions and a new protocol （allyl）4Sn/In（OTf）3 for simple imines was developed.

关键词： Catalytic allylation Aldimine Tetraallyltin In(OTf)3

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健全全面从严治党体系:基本概念、内在要素与实践路径

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学习论坛 2025年第1期 25-32页

作者：罗星中国纪检监察学院党建教研部北京100877

全面从严治党体系是一个由诸多要素按照一定结构形成的复杂整体,是管党治党各领域各方面相互贯通、有机结合形成的体系。全面从严治党体系生成于中国共产党管党治党的具体实践中,具有理论基础深厚性、参与主体多元性、任务布局全面性、... 详细信息

全面从严治党体系是一个由诸多要素按照一定结构形成的复杂整体,是管党治党各领域各方面相互贯通、有机结合形成的体系。全面从严治党体系生成于中国共产党管党治党的具体实践中,具有理论基础深厚性、参与主体多元性、任务布局全面性、治理过程常态性、方法路径多样性的特点。新时代全面从严治党体系包含了组织体系、教育体系、监管体系、制度体系、责任体系五大部分。“五大体系”相互联系、有机贯通,明确了全面从严治党的基本内容、重点领域与内在逻辑。健全全面从严治党体系,要坚持和加强党的全面领导,持续深化党的建设制度改革,在铲除腐败滋生土壤和条件上下更大功夫,丰富全面从严治党体系的理念方法和工作机制,加强对全面从严治党体系的学理阐释。

关键词：全面从严治党体系监督责任党的领导

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Extraction and isolation of the salidroside-type metabolite from zinc(Zn) and cadmium(Cd) hyperaccumulator Sedum alfredii Hance

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第10期13卷 839-845页

作者： yan xing Hong-yun PENG Xia LI Meng-xi ZHANG ling-ling GAO Xiao-e yanG Ministry of Education Key Laboratory of Environmental Remedia-tion and Ecological Health College of Environmental and ResourceSciencesZhejiang UniversityHangzhou 310058China State Key Laboratory of Hydrology-Water Resources and HydraulicEngineering Hohai UniversityNanjing 210098China

The active metabolite in the post-harvested biomass of zinc(Zn) and cadmium(Cd) hyperaccumulator Sedum alfredii Hance from phytoextraction is of great interest in *** current study demonstrates that a salidroside-type metabolite can be yielded from the Zn/Cd hyperaccumulator *** biomass by means of sonication/ethanol extraction and macroporous resin column(AB-8 type) *** concentrations of Zn and Cd in the salidroside-type metabolite were below the limitation of the national standards.

关键词： Salidroside-type metabolite Isolation Hyperaccumulator Sedum alfredii Hance

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Robust Beamforming for Secured Wireless Power Transfer in MIMO Magnetic Resonant Coupling System:A Probabilistic Approach

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China Communications 2019年第1期16卷 97-107页

作者： ling xing Kaikai Deng Feifei Gao School of Information Engineering Henan University of Science and Technology Institute for Artificial Intelligence Tsinghua University(THUAI) State Key Lab of Intelligent Technologies and Systems Tsinghua University Beijing National Research Center for Information Science and Technology(BNRist) Department of Automation Tsinghua University

Wireless power transfer(WPT) to support mobile and portable devices is an emerging wireless *** all kinds of approaches,magnetic resonance coupling(MRC) is an excellent one for mid-range WPT,which provides better mobility,flexibility,and convenience due to its simplicity in hardware implementation and longer transmission *** this paper,we consider an MRCWPT system with multiple power transmitters,one intended power receiver and multiple unintended power *** investigate the probabilistic robust beamforming designs and provide efficient algorithms to achieve the local optimums under two different criteria,i.e.,total source power minimization problem and min-max unintended receiving power restriction *** the problems are quite typical in robust design situations,our proposed robust beamformers can be conveniently applied to other probabilistic robust design problems,thus reduce the complexity as well as improve the beamforming *** results demonstrate that the proposed algorithms can significantly improve the performance as well as the robustness of the WPT system.

关键词： magnetic resonance coupling wireless power transfer beamforming probabilistic robustness power security

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Low temperature synthesis of high-entropy(Y_(0.2)Yb_(0.2)Sm_(0.2)Eu_(0.2)Er_(0.2))_(2)O_(3)nanofibers by a novel electrospinning method

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Journal of Materials Science & Technology 2022年第8期103卷 215-220页

作者： yan xing Wenqing Dan Yicun Fan xing’ao Li New Energy Technology Engineering Lab of Jiangsu Province School of ScienceNanjing University of Posts&Telecommunications(NUPT)Nanjing 210023China

High-entropy ceramics(HECs)show outstanding properties such as amorphous-like thermal conductivities,colossal dielectric constant,superionic conductivity,enhanced electromagnetic wave absorption ability,super hardness and strength,which are promising for structural and functional ***,the high synthesis temperature has become the bottleneck that hinders the scale-up production and practical applications of *** is thus appealing to develop a novel low-temperature process for the synthesis of *** demonstrate the feasibility of low-temperature synthesis,herein,an electrospinning method has been utilized,for the first time,for the synthesis of high-entropy(Y_(0.2)Yb_(0.2)Sm_(0.2)Eu_(0.2)Er_(0.2))_(2)O_(3)*** has been found that after electrospinning from liquid precursors single phase(Y_(0.2)Yb_(0.2)Sm_(0.2)Eu_(0.2)Er_(0.2))_(2)O_(3) solid solution with bixbyite structure can be formed by calcining at a temperature as low as 500℃,which is at least about 1000℃ lower than that used in the solid-state synthesis *** as-prepared(Y_(0.2)Yb_(0.2)Sm_(0.2)Eu_(0.2)Er_(0.2))_(2)O_(3) nanofibers are continuous and uniform with a smooth surface and a small diameter of 150 *** is also intriguing that the average grain size of(Y_(0.2)Yb_(0.2)Sm_(0.2)Eu_(0.2)Er_(0.2))_(2)O_(3) is only about 10 nm,which is much smaller than that in the solid-state synthesized *** addition,all the elements are homogeneously distributed along the *** work demonstrates that high-entropy ceramic nanofibers can be synthesized from liquid precursors at low temperatures through a simple,efficient,and low-cost electrospinning method,which opens up a new avenue for the low-temperature synthesis of HECs.

关键词： High-entropy ceramics Nanofibers Electrospinning Rare earth metal oxides Synthesis

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Synthesis of Co-Ni oxide microflowers as a superior anode for hybrid supercapacitors with ultralong cycle life

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Chinese Chemical Letters 2017年第2期28卷 206-212页

作者： ling-yang Liu Xu Zhang Hong-Xia Li Bao Liu Jun-Wei Lang ling-Bin Kong xing-Bin yan State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China Laboratory of Clean Energy Chemistry and Materials State Key Laboratory of Solid LubricationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

Li-ion hybrid capacitors（LIHCs）,composing of a lithium-ion battery（LIB） type anode and a supercapacitor（SC） type cathode,gained worldwide popularity due to harmonious integrating the virtues of high energy density of LIBs with high power density of ***,nanoflakes composed microflower-like Co-Ni oxide（CoNiO） was successfully synthesized by a simple co-precipitation *** atomic ratio of as-synthesized CoNiO is determined to be 1：3 through XRD and XPS analytical *** a typical battery-type material,CoNiO and capacitor-type activated polyanilinederived carbon（APDC） were used to assemble LIHCs as the anode and cathode materials,*** a result,when an optimized mass ratio of CoNiO and APDC was 1：2,CoNiO//APDC LIHC could deliver a maximum energy density of 143 Wh kg^-1 at a working voltage of 1-4 *** is worth mentioning that the LIHC also exhibits excellent cycle stability with the capacitance retention of -78.2%after 15,000 cycles at a current density of 0.5 A g^-1.

关键词： Li-ion hybrid capacitor Energy storage device Co-precipitation method Cobalt nickel oxide APDC Long cycle life

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