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Pricing in combinatorial double auction-based grid allocation model

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The Journal of China Universities of Posts and Telecommunications 2009年第3期16卷 59-65页

作者： li li liu yuan-an liu Kai-ming MA Xiao-lei YANG Ming Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

This article proposes a novel grid resource allocation model, in which the users and the grid service providers participate in the combinatorial double auction for the resource allocation. To obtain the detailed resource allocation status and the price information, a novel pricing algorithm is designed for the allocation model. Simulation results demonstrate that the proposed algorithm completes the resource allocation and pricing efficiently, and exhibits incentive compatible characteristic. Moreover, users with the higher average price and providers with the lower average price get compensation during the pricing process.

关键词： grid combinatorial double auction resource allocation pricing

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碳交易政策对绿色物流效率的影响

南宁师范大学学报(自然科学版) 2025年第1期42卷 71-78页

作者：李梅刘鹂园陶徐杰雄胡建平南宁师范大学物流管理与工程学院南宁师范大学广西高校智慧物流技术重点实验室广东工贸职业技术学院工商管理学院

通过分析2010—2021年中国30个省份的平衡面板数据，采用Super-SBM模型、多期双重差分（Difference-in-Difference,DID）模型和中介效应模型，实证分析碳交易政策对绿色物流效率的影响及其作用机制：碳交易政策显著提升了省域绿色物流... 详细信息

通过分析2010—2021年中国30个省份的平衡面板数据，采用Super-SBM模型、多期双重差分（Difference-in-Difference,DID）模型和中介效应模型，实证分析碳交易政策对绿色物流效率的影响及其作用机制：碳交易政策显著提升了省域绿色物流效率，主要通过产业结构升级实现，而绿色技术创新在短期内未显现显著效果，甚至在某些情况下还产生了负面影响。异质性分析显示，该政策对东部地区和非资源型省份的促进作用更显著，对中西部及资源型省份效果较弱。继续完善碳交易市场机制、加大对绿色技术创新的支持力度和实施差异化政策，有利于提高实施碳交易政策对省域绿色物流效率的积极影响，推动区域绿色物流效率的提升。该研究为优化碳交易政策和推动绿色物流发展提供了理论支持。

关键词：碳交易政策绿色物流技术创新产业结构市场机制差异化政策

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Estimation Algorithm of Contending Stations Based on Improved DCF Model in IEEE 802.11

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The Journal of China Universities of Posts and Telecommunications 2004年第z1期11卷 44-49页

作者： HU He-fei liu yuan-an li Shu-lan School of Telecommunications Engineering Beijing University of Posts and Telecommunications Beijing 100876 P.R.China School of Telecommunications Engineering Beijing University of Posts and Telecommunications Beijing 100876 P.R.China School of Telecommunications Engineering Beijing University of Posts and Telecommunications Beijing 100876 P.R.China

The fundamental access method of IEEE 802.11 is a DCF known as carrier sense multiple access with collision avoidance (CSMA/CA) scheme with exponential back-off. RTS__threshold is used to determine whether to deploy RTS/CTS access method. This threshold should vary with the number of contending stations which contend wireless media to get better throughput. The paper proposes an algorithm which estimates the number of contending stations in BSS. The algorithm is shown to be accurate which is verified by elaborate simulations.

关键词： IEEE 802.11 wireless LAN CSMA/CA estimation algorithm model

Hydroxylation of Benzene to Phenol via Hydrogen Peroxide in Hydrophilic Triethylammonium Acetate Ionic liquid

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Chemical Research in Chinese Universities 2011年第3期27卷 503-507页

作者： HU Xiao-ke ZHU liang-fang GUO Bin liu Qiu-yuan li Gui-ying HU Chang-wei Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 P. R. China

A new Fenton-like system in a medium of hydrophilic triethylammonium type of ionic liquid（IL） was used for the hydroxylation of benzene to phenol. The triethylammonium acetate（[Et3NH][CH3COO]） IL exhibited retardation performance for the decomposition of H2O2 and protection performance for the further oxidation of phenol, thus the yield and selectivity to phenol were promoted greatly. The acidity of the system was proved to be an important factor for the selectivity to phenol. The utilization of H2O2 and the selectivity to phenol, as well as the Turnover number（TON） of the catalyst were effectively enhanced by a benzene-[Et3NH][CH3COO] bi-phase system. The catalyst with [Et3NH][CH3COO] IL was recycled with stable catalytic performance.

关键词： Hydrophilic Ionic liquid Fenton-like Hydroxylation

A Two-phase Methodology Heuristic Insertion Algorithm for TSP

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计算机科学与技术汇刊（中英文版） 2013年第4期2卷 62-68页

作者： Jianjun liu yuan li Xinrui Wang yuan Wen Tingying Zhou College of Science China University of Petroleum Beijing 102249 China

Electrochemical treatment of COD in biologically pretreated coking wastewater using Ti/RuO2-IrO2 electrodes combined with modified coke

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Journal of Coal Science & Engineering(China) 2011年第4期17卷 426-430页

作者： HE Xu-wen liu li-yuan GONG Jing-wen WANG Jian-bing QIN Qiang WANG Hao School of Chemical and Environmental Engineering China University of Mining and Technology （Beijing） Beijing 100083China

The electrochemical treatment of COD contained in biologically pretreated coking wastewater treated by a three-dimensional electrode system with modified coke as the particle electrode was investigated. And the electrochemical perromance of the coke modified with various active components was studied. The results show that the coke modified with Fe（NO3）2 has the lowest energy consumption and higher COD removal rate under the same condition, and the modified coke has better surface characteristics for the purpose of this study. In addition, the kinetic constant was also calculated. The study shows that the three-dimensional electrode system with Fe （NO3）z-modified coke can give a satisfactory solution in biologically pretreated coking wastewater.

关键词： three-dimensional electrode Ti/RuO2-IrO2 anode Fe (NO3)2-modified coke coking wastewater

Multilayer Low Pass Filter Using LTCC Technology

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Journal of Electronic Science and Technology of China 2007年第4期5卷 374-377页

作者： Xi-Dan Chen Ying-li liu yuan-Xun li School of Microelectronics and Solid-State Electronics University of Electronic Science and Technology of China （UESTC） Chcngdu 610054 China

The implementation and characteristics of a compact lumped-element three-order low pass filter are presented in this paper. The filter with 120 MHz cut off frequency, as well as more than 20 dB of the attenuation above 360 MHz frequency band is successfully manufactured in an LTCC substrate with 40 pm layer thickness. The overall size of the filter is 2.0 mm×1.2 mm×0.9 mm. A good coincidence between the measured results and the full-wave electromagnetic designed responses is observed.

关键词： low pass filter low temperature co-fired ceramic (LTCC) lumped-element filter multilayer RF circuits.

Early positive fluid balance is associated with higher mortality in neonates following cardiac surgery

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South China Journal of Cardiology 2020年第1期21卷 23-29页

作者： ZHANG Chong-jian li Xiao-feng li liu-yuan LUO Dan-dong Department of Cardiovascular Surgery Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510180GuangdongChina

Background Early adequate fluid infusion could prevent organ hypoperfusion after surgery. However,excessive fluid expansion after pediatric cardiac surgery adversely influences multiple organ systems. This retrospective,observational study aimedto determine the relationship between the first 24 hours postoperative positive fluid balance and mortality and morbidity in neonates undergoing cardiac surgery. Methods In total,256 neonates who had undergone cardiovascular surgery were enrolled. The baseline characteristics,fluid input,output,and clinical outcomes were obtained. Fluid balance was calculated as(total fluid in total fluid out). Cox proportionalhazards regressions were used to analyze the relationship between early positive fluid balance and postoperative mortality. Results No difference was observed between the positive fluid balance group and negative fluid balance group in terms of age,weight,height,RACHS-1 score,cardiopulmonary bypass time,and aortic crossclamp time. Positive fluid balance group patients were more likely to have a higher rate of male(P=0.01),more peritoneal drainage after surgery(P=0.015),higher maximum vasoactive-inotropicscore(Plity from multivariate analyses were cardiopulmonary bypass time(HR 1.01,95%CI 1.002-1.021,P=0.013),chest drainage(HR 1.01,95%CI 1.000-1.011,P=0.045),and positive fluid balance(HR 7.85,95%CI 1.395-44.159,P=0.019). Conclusions Early postoperative positive fluid balance is associated with higher mortality in neonates following cardiopulmonary bypass cardiac surgery. However,postoperative positive fluid balance is not associated with increased duration of mechanical ventilation and hospital length of stay.

关键词： fluid balance cardiac surgery neonate cardiopulmonary bypass

基于65 nm标准CMOS工艺的3.0 THz探测器

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红外与毫米波学报 2020年第1期39卷 56-64页

作者：方桐刘力源刘朝阳冯鹏李媛媛刘俊岐刘剑吴南健中国科学院半导体研究所半导体超晶格国家重点实验室北京100083 中国科学院半导体研究所半导体材料科学重点实验室北京100083 中国科学院大学材料与光电研究中心北京100049

基于Dyakonov和Shur等离子体波振荡原理设计并流片制备了一种采用65 nm标准CMOS工艺的3.0THz探测器,探测器包括贴片天线、NMOS场效应晶体管、匹配网络及陷波滤波器。探测器在室温条件下可达到526 V/W的响应率(Rv)和73 pW/Hz1/2的噪声等... 详细信息

基于Dyakonov和Shur等离子体波振荡原理设计并流片制备了一种采用65 nm标准CMOS工艺的3.0THz探测器,探测器包括贴片天线、NMOS场效应晶体管、匹配网络及陷波滤波器。探测器在室温条件下可达到526 V/W的响应率(Rv)和73 pW/Hz1/2的噪声等效功率(NEP)。采用该探测器和步进电机搭建了太赫兹扫描成像系统,获得了太赫兹源出射光斑的远场形状,光斑的半高宽(FWHM)为240μm;并对聚甲醛牙签和树叶进行了扫描成像实验,结果表明CMOS太赫兹探测器在成像领域有潜在的应用前景。

关键词： CMOS 太赫兹太赫兹成像太赫兹探测器