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Robust model predictive control for greenhouse temperature based on particle swarm optimization

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Information Processing in Agriculture 2018年第3期5卷 329-338页

作者： Lijun Chen Shangfeng Du yaofeng He Meihui Liang Dan Xu College of Information and Electrical Engineering China Agricultural UniversityBeijing 100083PR China

Application of model predictive control(MPC)in horticultural practice requires detailed ***,even highly sophisticated greenhouse climate models are often known to have unknown dynamics affected by bounded *** enforce robustness during the controller design stage,this paper proposes a particle swarm optimization(PSO)-based robust MPC strategy for greenhouse temperature *** strategy is based on a nonlinear physical temperature affine *** robust MPC technique requires online solution of a minimax optimal control problem,which optimizes the tradeoff between set point tracking and cost requirements *** minimax optimization problem is reformulated to a nonlinear programming problem with *** is used to solve the reformulated problem and priority ranking of constraint fitness is proposed to guarantee that the constraints are *** results of simulations performed using the proposed control system show that the controller can effectively achieve the set point in the presence of disturbances and that it offers more suitable control variables,higher control precision,and stronger robustness than the conventional MPC.

关键词： Greenhouse temperature Robust model predictive control Particle swarm optimization Affine non-linear systems

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自行加榴炮系统反应时间优化研究

火炮发射与控制学报 2024年第1期45卷 99-103页

作者：冯颖龙王振明王屹华许耀峰王晓冬西北机电工程研究所陕西咸阳712099

武器系统反应时间是反映武器装备自动化水平和火力反应能力的重要战技指标。针对某大口径自行加榴炮系统反应时间过长、作战效率较低、无法适应现代战场需求的问题,推导了操瞄解算模型,按照操瞄解算模型自动调炮,研究了操瞄调炮与弹药... 详细信息

武器系统反应时间是反映武器装备自动化水平和火力反应能力的重要战技指标。针对某大口径自行加榴炮系统反应时间过长、作战效率较低、无法适应现代战场需求的问题,推导了操瞄解算模型,按照操瞄解算模型自动调炮,研究了操瞄调炮与弹药装填机构动作的特点和时长,设计分步并行的方法,优化了调炮动作与装填动作的联动过程,并进行试验对比分析。试验结果表明,相较于传统方法,优化后的方法使得该型自行加榴炮的平均系统反应时间减少了7.02.s,系统反应速度提高了32.3%,使之可以快速、高效地完成规定的战术动作,明显提升其战场生存能力和作战效率。

关键词：自行加榴炮武器系统反应时间操瞄解算模型分步并行方法作战效率

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吉他霉素纳米凝胶制备与评价

中国畜牧兽医 2024年第4期51卷 1737-1745页

作者：马蓓王天扬丁泽董天祯刘盼张耀锋刘俊峰塔里木大学动物科学与技术学院阿拉尔843300 新疆生产建设兵团塔里木动物疫病诊断与防控工程实验室阿拉尔843300

【目的】制备一种可局部递送吉他霉素用于皮肤创口感染的纳米凝胶。【方法】以京尼平为交联剂在希夫碱作用下,通过凝胶材料之间的静电作用制备壳聚糖/明胶/聚乙烯醇纳米凝胶,并载入药物吉他霉素,对其包封率、载药量、溶胀性能、纳米粒径... 详细信息

【目的】制备一种可局部递送吉他霉素用于皮肤创口感染的纳米凝胶。【方法】以京尼平为交联剂在希夫碱作用下,通过凝胶材料之间的静电作用制备壳聚糖/明胶/聚乙烯醇纳米凝胶,并载入药物吉他霉素,对其包封率、载药量、溶胀性能、纳米粒径、Zeta电位、微观结构扫描等表征结构及生物安全性进行测试,评估纳米凝胶的体外释放效果和伤口愈合活性。【结果】本研究制备的吉他霉素纳米凝胶,在其组方为每2. mL凝胶中含吉他霉素0.2. g、壳聚糖0.4 g、明胶0.3 g、聚乙烯醇0.2.g,京尼平0.2.g,其余量为去离子水时外观性状为淡蓝色纳米凝胶,无沉淀与药物析出,溶胀度高,载药量为13.6%,包封率为83.1%;扫描电镜下可见该纳米凝胶形成孔隙致密且分布均匀的三维网状结构;平均粒径为2..56 nm,Zeta电位为16.33 mV;生物安全性良好;纳米凝胶在体外释放药物可维持48 h,明显长于吉他霉素溶液的释放时间。此外,纳米凝胶还能使小鼠伤口缩小96%,有助于伤口愈合。【结论】本研究成功制备了吉他霉素纳米凝胶,通过体内体外试验评估证明了其潜在的药物控释与促进皮肤伤口愈合的能力。

关键词：吉他霉素纳米凝胶药物控释伤口愈合

Divalent Ytterbium Iodide Supported by β-Diketiminato Based Tridentate Ligand: Synthesis, Structure and Small Molecule Activation

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Chinese Journal of Chemistry 2020年第3期38卷 247-253页

作者： Xiaojuan Liu Li Xiang Chen Wang Bingwu Wang Xuebing Leng yaofeng Chen State Key Laboratory of Organometllic Chemistry Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences345 Lingling RoadShanghai 200032China Beiing National laboratory of Molecular Science State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Moleculor EngineeringPeking UniversityBeijing 100871Chino

Divalent ytterbium lodide[LYb(μ-I)(THF)]2.1;L=[MeC(NDIPP)CHC(Me)NCH2.H2.Me2.^-,DIPP=2.6-(iPr)2.6H3)was synthesized and its reactivity was *** 1 was synthesized by salt metathesis of Ybl2.THF)2.with the potassium salt of ligand(KL)in high *** the reactions with trimethylsil azide,azobenzene,sulfur and diphenyl disufide,complex 1 acts as a 2. *** the reaction with CO2.the central carbon atom ofβ-diketiminato backbone in 1 nuclephilcally attacks the CO2.molecule to give a divalent ytterbium carboxylate.

关键词： backbone potassium azide

When nanocarbon science meets with molecular machine:A new type of mechanically interlocked molecules(MIMs)

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Chinese Journal of Structural Chemistry 2023年第4期42卷 4-6页

作者： Bin Lan Ruiying Zhang Jianfeng Yan yaofeng Yuan Yuanming Li Key Laboratory of Molecule Synthesis and Function Discovery(Fujian Province University) College of ChemistryFuzhou UniversityFuzhou350108China

The discovery of new carbon nanomaterials such as fullerenes,carbon nanotubes,graphene,and graphyne has always driven the development of various fields of science[1].The arrangement of carbon atoms largely influences their *** the past decade,the atomic-precision synthesis and study of molecular nanocarbons,which is the sub-structures of larger carbon nanostructures,have attracted huge attention[2..Among them,the synthesis of cycloparaphenylene(CPP)(the substructure of carbon nanotubes)has been developed considerably since 2.08[3].Recently,topologically complex nanocarbon[4]starting from CPP or oligoparaphenylene-derived carbon nanohoop has been explored as a new type of MIM,which undoubtedly revolutionizes a wide range of sciences,especially in the field of molecular machine(Fig.1)[5].

关键词： properties. carbon synthesis

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冀东中部稀有金属花岗伟晶岩的发现及意义

矿产勘查 2024年第4期15卷 540-549页

作者：李鹏冯钊孙耀锋张璞唐宗源河北省煤田地质局环境地质调查院河北石家庄050085 河北地质大学资源与环境工程研究所河北石家庄050031 河北地质大学地质调查研究院河北石家庄050031

冀东地区位于华北克拉通北缘东段马兰峪复式背斜,是中国北方重要的内生金属成矿区。最近,在冀东中部新发现了一系列LCT型和NYF型稀有金属花岗伟晶岩,同空间伴生绢英岩化蚀变岩和稀有金属石英脉,成矿元素包括Ag、Au、Rb、Li、Nb、Zr、HRE... 详细信息

冀东地区位于华北克拉通北缘东段马兰峪复式背斜,是中国北方重要的内生金属成矿区。最近,在冀东中部新发现了一系列LCT型和NYF型稀有金属花岗伟晶岩,同空间伴生绢英岩化蚀变岩和稀有金属石英脉,成矿元素包括Ag、Au、Rb、Li、Nb、Zr、HREE、Th等。LCT型花岗伟晶岩包括锂云母/白云母花岗伟晶岩和天河石花岗伟晶岩,Rb_(2.O含量最高可达0.43%,最低为0.06%;Li_(2.O分布不均,仅在锂云母花岗伟晶岩中富集,最高可达0.33%。NYF型电气石花岗伟晶岩主要富集Nb,局部富集电气石,Nb含量为0.05%~0.06%,Ta含量很低,ThO_(2.含量为0.02.~0.05%。同空间的绢英岩化蚀变岩Rb_(2.O含量为0.06%~0.15%,Li_(2.O含量为0.07%~0.2.%,局部含金,最高品位可达1.57×10^(-6);稀有金属石英脉,Nb_(2.O_(5)含量为0.06%~0.50%,富集Zr、重稀土、Th、U、Ag,其中Ag品位为18.2.10^(-6)~160.0×10^(-6)。初步地球化学分析认为,岩浆的成分变化以及岩浆-流体作用可能是研究区稀有金属花岗伟晶岩成矿的关键。

关键词：稀有金属花岗伟晶岩蚀变岩石英脉冀东中部

Comparative study of estimation methods for genomic breeding values

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Science Bulletin 2016年第5期61卷 353-356页

作者： Chonglong Wang Qin Zhang Li Jiang Rong Qian Xiangdong Ding yaofeng Zhao Institute of Animal Husbandry and Veterinary Medicine AnhuiAcademy of Agricultural Sciences Key Laboratory of Animal Genetics Breeding and Reproduction Ministry of Agriculture of China College of Animal Science and Technology China Agricultural University College of Biological Sciences China Agricultural University

Estimation of genomic breeding values is important in genomic selection. Bayesian and BLUP methods are the main techniques employed. In this study,we conducted a comparative study of Bayes A, Bayes B,Bayes Cp and GBLUP methods in simulated data and real data of Chinese Holstein cattle. Results showed that, in simulated data, the accuracies of all methods were all similarly elevated with the increase of reference population size, but they made different responses to the changes of marker number or QTL number. In real data of Chinese Holstein cattle, Bayes A generated the highest accuracy almost for all six traits, and GBLUP performed as well as Bayes A for the traits of milk yield, fat yield and protein yield, while for the trait of fat percentage, protein percentage and somatic cell score, three Bayesian methods showed superior to GBLUP. Comprehensively analyzing above results, it can be speculated that accuracies of the three Bayesian methods are not only influenced by the absolute value of QTL number or marker number, but may also be influenced by the ratio of QTL number to marker number. And there is at least one kind of Bayesian methods performing better than GBLUP, when the ratio of QTL number versus marker number is very small or involving large-effect QTL.

关键词： Genomic selection Estimation of genomic breeding values Bayesian methods BLUP methods

Are Sc-C and Sc-P Bonds Reactive in Scandium Phosphinoalkylidene Complex？ Insights on a Versatile Reactivity

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Chinese Journal of Chemistry 2018年第10期36卷 904-908页

作者： Weiqing Mao Li Xiang Carlos Alvarez Lamsfus Laurent Maron Xuebing Leng yaofeng Chen State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Univer- sity of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China LPCNO CNRS & INSA Universite Paul Sabatier 135 Avenue de Rangueil 31077 Toulouse France

The peculiar electronic structure of scandium phosphinoalkylidene complex [LSc{C（SiMe3）PPh2.THF] （L=[MeC（NDIPP）CHC（NDIPP）Me]-）, DIPP= 2.6-（Pr）2.6H3） leads to an interesting versatile reactivity, which is demonstrated both experimentally and computationally. The complex undergoes [2.2. cycloaddition reactions with alkynes, and easily activates various X-O bonds such as C-O of propylene oxide, N-O of 3,5-dimethylisoxazole, B-O of pinacolborane and Si-O of triethoxysilane. These reactions occur on the Sc-C bond of the phosphinoalkylidene complex. Interestingly, the Sc-P bond can also be activated as the presence of a Sc-C-P three center π interaction in the complex allows performing C-F activation of 2.6-difluoro- pyridine and 1,2.addition with imine or ketone. The complex also reacts with metal complexes, [（COD）RhCl]2.and （Ph3P）AuCl, to form structural intriguing heterobimetallic complexes.

关键词： alkylidene density functional calculations multiple bonds phosphorus scandium

影响成人语后聋人工耳蜗植入者音乐相关生活质量的因素探究

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中华耳鼻咽喉头颈外科杂志 2024年第1期59卷 27-33页

作者：杨烨钱晓云耿立国姜耀锋高珺岩黄鹂黎奥赵宁徐玉芹朱光洁高下南京大学医学院附属鼓楼医院耳鼻咽喉头颈外科、南京鼓楼医院耳鼻咽喉研究所南京210008 南京大学医学院附属鼓楼医院医疗病案中心南京210008 江苏省儿童康复研究中心技术指导部南京210008 南京大学医学院附属鼓楼医院图书情报中心南京210008

目的:观察成人语后聋人工耳蜗植入者日常生活中聆听音乐的感受以及音乐对其生活的重要性,探寻相关影响因素。方法:该研究为横断面调查研究。2.2.年1—8月使用《音乐相关生活质量量表》评估63例成人语后聋人工耳蜗植入者的音乐体验以及需... 详细信息

目的:观察成人语后聋人工耳蜗植入者日常生活中聆听音乐的感受以及音乐对其生活的重要性,探寻相关影响因素。方法:该研究为横断面调查研究。2.2.年1—8月使用《音乐相关生活质量量表》评估63例成人语后聋人工耳蜗植入者的音乐体验以及需求,其中男性2.例,女性36例,年龄(40.7±12.3)岁(均数±标准差,下同),手术时年龄(36.8±13.1)岁,术前助听器无效时间(3.9±5.8)年。分析指标包括年龄、术前佩戴助听器无效的时间、术前对音乐喜好程度、术后人工耳蜗使用时间、目前助听方式和听觉康复效果,采用SPSS 2..0统计软件分析上述6种因素是否对受试者聆听音乐构成影响。结果:量表中的各维度均只与单一因素相关,其中音乐体验部分的两个亚维度均与听觉康复效果相关;而重要性部分中,听觉康复效果是“参与重要性”维度的影响因素,术前对音乐的喜好程度则是“感知重要性”维度的影响因素。以上述因素分组比较后组间差异有统计学意义( P值均0.05)。结论:成人语后聋患者在植入人工耳蜗后有继续聆听音乐的需求和尝试,听觉康复效果和术前对音乐的喜好程度是影响植入者聆听音乐的两个重要因素。当听觉交流水平得到一定程度恢复后,需要及时关注植入者在音乐方面的聆听需求和训练,尤其对于术前喜好音乐者。

关键词：耳蜗植入术问卷调查音乐成人语后聋