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Predictive cruise control for heavy trucks based on slope information under cloud control system

Journal of Systems Engineering and Electronics 2022年第4期33卷 812-826页

作者： LI Shuyan wan keke GAO Bolin LI Rui wanG Yue LI Keqiang College of Engineering China Agricultural UniversityBeijing 100083China School of Vehicle and Mobility Tsinghua UniversityBeijing 100084China

With the advantage of fast calculation and map resources on cloud control system(CCS), cloud-based predictive cruise control(CPCC) for heavy trucks has great potential to improve energy efficiency, which is significant to achieve the goal of national carbon neutrality. However, most investigations focus on the on-board predictive cruise control(PCC) system,lack of research on CPCC architecture under CCS. Besides, the current PCC algorithms have the problems of a single control target and high computational complexity, which hinders the improvement of the control effect. In this paper, a layered architecture based on CCS is proposed to effectively address the realtime computing of CPCC system and the deployment of its algorithm on vehicle-cloud. In addition, based on the dynamic programming principle and the proposed road point segmentation method(RPSM), a PCC algorithm is designed to optimize the speed and gear of heavy trucks with slope information. Simulation results show that the CPCC system can adaptively control vehicle driving through the slope prediction, with fuel-saving rate of 6.17% in comparison with the constant cruise control. Also,compared with other similar algorithms, the PCC algorithm can make the engine operate more in the efficient zone by cooperatively optimizing the gear and speed. Moreover, the RPSM algorithm can reconfigure the road in advance, with a 91% roadpoint reduction rate, significantly reducing algorithm complexity.Therefore, this study has essential research significance for the economic driving of heavy trucks and the promotion of the CPCC system.

关键词： predictive cruise control(PCC) cloud control system(CCS) layered architecture road point segmentation method(RPSM) economic driving

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基于云端地图的智能网联商用车质量估计算法研究

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汽车工程 2024年第6期46卷 1006-1014页

作者：张傲李淑艳高博麟万科科周光曹通易中国农业大学工学院北京100083 清华大学车辆与运载学院北京100084 深圳元戎启行科技有限公司深圳518033

整车质量是车辆动力学参数中的一个关键状态量。在辅助驾驶系统中,整车质量的准确估计对规划控制算法至关重要。传统的质量估计算法在同时估计车辆质量与道路坡度时面临挑战,尤其是坡度估计的误差可能严重影响质量估计的准确性。当前,... 详细信息

整车质量是车辆动力学参数中的一个关键状态量。在辅助驾驶系统中,整车质量的准确估计对规划控制算法至关重要。传统的质量估计算法在同时估计车辆质量与道路坡度时面临挑战,尤其是坡度估计的误差可能严重影响质量估计的准确性。当前,云控平台提供了高精度的道路地图信息,为进一步优化质量估计算法提供了全新的思路。本研究基于云控平台的车云协同框架,设计了云控系统下的商用车质量估计系统架构。进而基于扩展卡尔曼滤波理论,并结合云端的道路地图信息,开发了商用车质量估计算法。通过将道路坡度视为已知参数而非变化的状态量对整车质量进行估计,并利用实车试验采集到的行驶数据进行了算法对比验证。试验结果表明,基于云端坡度信息的质量估计算法,在空载与满载工况下均能实现快速收敛,估计质量的绝对百分比误差在3%以内,相较于传统的同步估计车辆质量与道路坡度的算法,能够更快且更准确地收敛到车辆真实质量附近。

关键词：智能网联汽车云控系统质量估计扩展卡尔曼滤波

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儿科经典名方导赤散的古今文献考证

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中国实验方剂学杂志 2024年第11期30卷 218-227页

作者：梁绿圆万和伽张进彦刘珂珂曹佳蕾谭祥汉魏炳琦马丙祥贺亚静河南中医药大学郑州450046 河南梁济时中医药科技研究院郑州450000 康奈尔大学威尔医学院纽约10065 河南中医药大学第一附属医院郑州450099

导赤散是一首被历代医家传承发扬的清心利水养阴的儿科经典名方。该方最早可追溯到宋代钱乙的《小儿药证直诀》,后世发展的导赤散(汤)多根据该方进行加减。通过系统整理相关古籍及现代文献,采用文献计量学方法对导赤散的组成、炮制、制... 详细信息

导赤散是一首被历代医家传承发扬的清心利水养阴的儿科经典名方。该方最早可追溯到宋代钱乙的《小儿药证直诀》,后世发展的导赤散(汤)多根据该方进行加减。通过系统整理相关古籍及现代文献,采用文献计量学方法对导赤散的组成、炮制、制法与应用进行考证分析。该研究共纳入相关有效古籍文献127条,涉及中医古籍86部。经考证,古籍中该方的药物基原基本清晰,地黄为玄参科植物地黄Rehmannia glutinosa的块根,木通为木通科植物木通Akebia quinata的干燥藤茎,甘草为豆科植物甘草Glycyrrhiza uralensis的干燥根和根茎,竹叶为禾本科植物淡竹Phyllostachys nigra var.henonis的干燥叶,建议4味药均用生品。药物剂量与煎服方法的关键信息为“生地黄、生甘草、木通各4.13 g,加水300 mL,后加竹叶4.13 g同煎至150 mL,食后温服”。导赤散具有清心养阴、利水通淋的功效,可用于治疗心胸烦热、口渴面赤、口舌生疮、小便赤涩刺痛等心经热盛症状。现代研究表明,导赤散常用于治疗口腔溃疡、疱疹性口腔炎、尿路感染、带状疱疹等疾病,上述研究结果为导赤散后期开发研究提供了参考依据。

关键词：导赤散源流方义功效临床应用儿科经典名方文献考证

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A Review and Outlook on Predictive Cruise Control of Vehicles and Typical Applications Under Cloud Control System

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Machine Intelligence Research 2023年第5期20卷 614-639页

作者： Bolin Gao keke wan Qien Chen Zhou wang Rui Li Yu Jiang Run Mei Yinghui Luo Keqiang Li School of Vehicle and Mobility Tsinghua UniversityBeijing 100084China College of Engineering China Agricultural UniversityBeijing 100083China School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006China School of Mechanical and Electrical Engineering Wuhan University of TechnologyWuhan 430070China

With the application of mobile communication technology in the automotive industry,intelligent connected vehicles equipped with communication and sensing devices have been rapidly promoted.The road and traffic information perceived by intelligent vehicles has important potential application value,especially for improving the energy-saving and safe-driving of vehicles as well as the efficient operation of traffic.Therefore,a type of vehicle control technology called predictive cruise control(PCC)has become a hot research topic.It fully taps the perceived or predicted environmental information to carry out predictive cruise control of vehicles and improves the comprehensive performance of the vehicle-road system.Most existing reviews focus on the economical driving of vehicles,but few scholars have conducted a comprehensive survey of PCC from theory to the status quo.In this paper,the methods and advances of PCC technologies are reviewed comprehensively by investigating the global literature,and typical applications under a cloud control system(CCS)are proposed.Firstly,the methodology of PCC is generally introduced.Then according to typical scenarios,the PCC-related research is deeply surveyed,including freeway and urban traffic scenarios involving traditional vehicles,new energy vehicles,intelligent vehicles,and multi-vehicle platoons.Finally,the general architecture and three typical applications of the cloud control system(CCS)on PCC are briefly introduced,and the prospect and future trends of PCC are proposed.

关键词： Predictive cruise control(PCC) cloud control system(CCS) cooperative control efficient operation intelligent connected vehicle.

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An improved yeast two-hybrid approach for detection of interacting proteins

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Frontiers in Biology 2006年第2期1卷 120-126页

作者： wan Bingbing Shi Yan Huo keke State Key Laboratory of Genetic Engineering Institute of GeneticsSchool of Life SciencesFudan UniversityShanghai 200433China

Yeast two-hybrid approach is popularly used nowadays as an important technical method in the field of studying protein-protein interactions.Although yeast two-hybrid system is obviously advantageous in searching interacting proteins and setting up the network of proteins interaction,not all of proteins can use routine yeast two-hybrid method to search interacting proteins.Many important proteins,such as some nucleoprotein transcriptional factor,carry out the regular method and construct the bait-BD vector to screen the library containing AD vector.However,it usually results in failures because it contains the activate domain and can self-activate the reporter gene.In this study,we changed the research strategy,fused the bait gene(FOXA3)with the AD vector to screen the library containing BD vector,so that we constructed a two-hybrid library containing BD vector and can bypass the interference of self-activation.And we used this two-hybrid library to screen FOXA3,a hepatocyte nuclear factor,and found out an interacting protein:complement component C3.

关键词： yeast two-hybrid system protein-protein interaction human liver cDNA library FOXA3

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High level of extra-pair paternity in the socially monogamous Marsh Tits(Poecile palustris)

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Avian Research 2021年第4期12卷 722-726页

作者： Juan wang Yanhui Wei Lei Zhang Yiting Jiang keke Li Dongmei wan Laboratory of Animal Resource and Epidemic Disease Prevention Department of Life SciencesLiaoning UniversityShenyang 110036China

Background:Extra-pair copulation behavior has been widely studied among socially monogamous birds.Many species revealed high rates of extra-pair paternity.But few of the studies have been carried out in the Asian population.Methods:From 2012 to 2019,we explored the extra-pair paternity of Marsh Tits(Poecile palustris)in Xianrendong National Nature Reserve,Liaoning Province,China.During the study,adult Marsh Tits were captured with mist nets and parental birds,with nest-box traps.Blood samples were taken from the brachial vein.Parentage analyses were carried out using nine highly variable microsatellite loci through Cervus 3.0 software and maximum likelihood approach.Results:Forty-nine offspring(15.08%)from 20 nests(45.45%)were the results of extra-pair fertilization out of a total of 325 offspring in 44 nests.The average extra-pair offspring ratio was 33.54%,with a set varying from 11.11 to 71.43%.Nine extra-pair fathers had been successfully identified,four of whom were the close neighbors of the focus nest while the nests of the remaining five were relatively far.No significant difference was found in the genetic similarity between the social and extra-pair mates of the female,nor in the heterozygosis among the maternal half-siblings.Conclusions:In general,our study proved that the extra-pair paternity in Marsh Tits and its extra-pair mating is independent of the genetic compatibility hypothesis.This complements the understudied bird's extra-pair paternity in Asian area and contributes to the comprehensive insight of birds'extra-pair paternity behaviors.

关键词： Extra-pair paternity Genetic compatibility hypothesis Marsh Tits Microsatellite

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Dietary supplementation with Clostridium butyricum improves growth performance of broilers by regulating intestinal microbiota and mucosal epithelial cells

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Animal Nutrition 2021年第4期7卷 1105-1114页

作者： Laipeng Xu Xiangli Sun Xianhua wan keke Li Fuchun Jian Wenting Li Ruirui Jiang Ruili Han Hong Li Xiangtao Kang Yanbin wang College of Veterinary Medicine Henan Agricultural UniversityZhengzhou450046China College of Animal Science and Technology Henan Agricultural UniversityZhengzhou450046China Henan Jinbaihe Biotechnology Co. LtdAnyang455000China Henan Research Center of Germplasm Resources for Poultry Zhengzhou450046China

Clostridium butyricum has been widely considered an antibiotic substitute in recent years.It can promote growth performance,improve the immune response and enhance the intestinal barrier function of the host.In the present study,1-d-old Arbor Acres(AA)broilers were fed C.butyricum(1×109 cfu/kg)for 28 d.The transcriptomic characteristics of epithelial cells of the cecal mucosa were determined by RNA-sequence,and the cecal microbiota composition was explored by 16 S ribosomal RNA gene sequencing.The changes in the intestinal mucosa of broilers were then analyzed by tissue staining.Gene Ontology(GO)annotations identified substance transport and processes and pathways that might participate in intestinal development and cell viability.Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis revealed that the differentially expressed genes are involved in numerous pathways related to amino acid and vitamin metabolism and antioxidant and defensive functions,among others.The relative expression of some genes associated with intestinal barrier function(claudins 2,15,19,and 23,tight junction proteins 1,2,and 3 and mucin 1)was significantly increased in the treatment group(P<0.05 or P<0.01).Moreover,the proportion of Firmicutes was higher in the C.butyricum-treated group,whereas the proportion of Proteobacteria was higher in the control group.At the genus level,the relative abundances of Butyricicoccus and Lactobacillus,among other bacteria,were increased after C.butyricum supplementation.The tissue staining analysis showed that the cecal mucosa of broilers was significantly ameliorated after the addition of C.butyricum(P<0.05 or P<0.01).These results showed that dietary supplementation with C.butyricum can enhance the antioxidant capacity,mucosal barrier function,and stabilize the cecal microbiota,resulting in improving the growth performance.

关键词： Clostridium butyricum RNA-sequence 16S ribosomal RNA Intestinal barrier Broiler

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发展型人力资源管理实践感知对员工即兴行为的影响

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中国人力资源开发 2022年第4期39卷 83-95页

作者：朱平利万可可湖北工业大学经济与管理学院武汉430068

基于资源保存理论,探讨发展型人力资源管理实践感知对员工即兴行为的影响,分析员工工作获得感的中介作用与差错管理氛围感知的调节作用。本研究对265名企业员工的调查数据进行实证分析,研究结果表明:发展型人力资源管理实践感知对员工... 详细信息

基于资源保存理论,探讨发展型人力资源管理实践感知对员工即兴行为的影响,分析员工工作获得感的中介作用与差错管理氛围感知的调节作用。本研究对265名企业员工的调查数据进行实证分析,研究结果表明:发展型人力资源管理实践感知对员工即兴行为有着显著的正向影响;员工工作获得感在发展型人力资源管理实践感知和员工即兴行为之间起部分中介作用;差错管理氛围感知正向调节了员工工作获得感与员工即兴行为之间的关系,即差错管理氛围感知水平越高,工作获得感与即兴行为的正向相关关系越强。此外,本研究进一步揭示了被调节的中介效应,即差错管理氛围感知正向调节工作获得感在发展型人力资源管理实践感知与员工即兴行为之间的中介作用。本研究丰富了发展型人力资源管理实践与员工即兴行为的研究,为企业如何通过人力资源管理实践激发员工即兴行为提供一定的参考。

关键词：发展型人力资源管理实践感知工作获得感差错管理氛围感知即兴行为

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热解还原法制备镀镍ZrO_(2)增强低银SnAgCu系复合钎料及其钎焊

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稀有金属材料与工程 2023年第8期52卷 2876-2884页

作者：吴咏锦张柯柯吴婉王冰莹高一杰刘鹏河南科技大学材料科学与工程学院河南洛阳471023 有色金属新材料与先进加工技术省部共建协同创新中心河南洛阳471023

采用热分解-还原法制备镀镍ZrO_(2)增强相,粉末冶金法制备镀镍ZrO_(2)增强Sn1.0Ag0.5Cu复合钎料,研究了ZrO_(2)纳米颗粒表面金属化以及其对Sn1.0Ag0.5Cu复合钎料的微观结构、材料性能及钎焊接头的影响。结果表明:经机械预处理的ZrO_(2)... 详细信息

采用热分解-还原法制备镀镍ZrO_(2)增强相,粉末冶金法制备镀镍ZrO_(2)增强Sn1.0Ag0.5Cu复合钎料,研究了ZrO_(2)纳米颗粒表面金属化以及其对Sn1.0Ag0.5Cu复合钎料的微观结构、材料性能及钎焊接头的影响。结果表明:经机械预处理的ZrO_(2)粒径减小、团聚降低;采用热分解-还原法成功地制备出了镀镍ZrO_(2)增强相,Ni粒子以8~11 nm间距均匀附着于ZrO_(2)表面,ZrO_(2)(102)和Ni(101)界面呈半共格关系;添加适量镀镍ZrO_(2)对Ni/ZrO_(2)-Sn1.0Ag0.5Cu复合材料的电阻率影响不大,提高了润湿性和抗拉强度,在镀镍ZrO_(2)增强相添加质量分数为0.7%时Ni/ZrO_(2)-Sn1.0Ag0.5Cu复合钎料抗拉强度、钎焊接头抗剪切强度均达峰值,较基体材料提高了43.3%、45%。随着Ni-ZrO_(2)增强相的添加,复合钎料钎焊接头的断裂位置由界面IMC层向过渡区的近钎缝侧移动,断裂机制由韧-脆混合断裂逐渐转为韧窝为主的韧性断裂。

关键词：镀镍ZrO_(2) Sn1.0Ag0.5Cu 复合钎料力学性能钎焊接头

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鄂尔多斯盆地X区铝土岩储层分析

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西安石油大学学报（自然科学版） 2022年第2期37卷 25-31页

作者：刘可可付鑫荣伟万吉庆蔺佳蒋云鹏中国石油集团测井有限公司辽河分公司辽宁盘锦124010

为了明确鄂尔多斯盆地X区本溪组的铝土岩是储层还是盖层,以测井、录井、X衍射资料为基础,对铝土岩的成因、岩性、沉积环境、测井响应、储层物性及含气性进行表征。结果表明,铝土岩储层的硬水铝石矿物质量分数在80%以上,发育在封闭的滨... 详细信息

为了明确鄂尔多斯盆地X区本溪组的铝土岩是储层还是盖层,以测井、录井、X衍射资料为基础,对铝土岩的成因、岩性、沉积环境、测井响应、储层物性及含气性进行表征。结果表明,铝土岩储层的硬水铝石矿物质量分数在80%以上,发育在封闭的滨浅海环境,可分为过渡期、静水期、强动荡期和弱动荡期4种不同的水动力环境,在强动荡期和弱动荡期下发育的铝土岩具备成为储层的条件。铝土岩储层呈现高伽马、高密度、高中子、低电阻和低声波时差的三高两低特征;发育良好的原生粒间孔隙网络,次生孔隙不发育,平均有效孔隙度0.17,渗透率在100×10^(-3)μm^(2)左右。试气结果表明,铝土岩具有良好的含气性,可作为特殊储层,具备工业开采价值。

关键词：铝土岩硬水铝石储层评价测井特征特殊储层鄂尔多斯盆地

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