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Fixed-Time Cooperative Tracking for Delayed Disturbed Multi-Agent Systems Under Dynamic Event-Triggered Control

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IEEE/CAA Journal of Automatica Sinica 2022年第5期9卷 930-933页

作者： Jian Liu Yongbao Wu Mengwei Sun Changyin Sun School of Automation Southeast UniversityNanjing 210096 Key Laboratory of Measurement and Control of Complex System of Engineering Ministry of EducationSoutheast UniversityNanjing 210096China Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China IEEE

Dear editor,Recently,researchers have obtained many new results about the multi-agent systems(MASs)[1]-[3].In[1],the fixed-time cooperative control(FTCC)algorithm of linear MASs with matched disturbances was proposed.The nonholonomic chained-form dynamics case was considered in[2].In[3],the output tracking problem with data packet dropout was solved for high-order MASs.Moreover,delay frequently occurs because of the non-ideal data transmission[4],and the corresponding FTCC algorithm of MASs with delay was given in[5].

关键词： editor Dynamic Trigger Event

Prescribed-Time Nash Equilibrium Seeking for Pursuit-Evasion Game

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1518-1520页

作者： Lei Xue Jianfeng Ye Yongbao Wu Jian Liu D.C.wunsch Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of EducationNanjing 210096 School of Automation Southeast UniversityNanjing 210096China Department of Electrical and Computer Engineering Missouri University of Science and TechnologyRollaMO 65409 USA IEEE

Dear Editor,This letter is concerned with prescribed-time Nash equilibrium(PTNE)seeking problem in a pursuit-evasion game(PEG)involving agents with second-order dynamics.In order to achieve the prior-given and user-defined convergence time for the PEG,a PTNE seeking algorithm has been developed to facilitate collaboration among multiple pursuers for capturing the evader without the need for any global information.Then,it is theoretically proved that the prescribedtime convergence of the designed algorithm for achieving Nash equilibrium of PEG.Eventually,the effectiveness of the PTNE method was validated by numerical simulation results.A PEG consists of two groups of agents:evaders and pursuers.The pursuers aim to capture the evaders through cooperative efforts,while the evaders strive to evade capture.PEG is a classic noncooperative game.It has attracted plenty of attention due to its wide application scenarios,such as smart grids[1],formation control[2],[3],and spacecraft rendezvous[4].It is noteworthy that most previous research on seeking the Nash equilibrium of the game,where no agent has an incentive to change its actions,has focused on asymptotic and exponential convergence[5]-[7].

关键词： seeking prescribed convergence

Integrated liver proteomics and metabolomics identify metabolic pathways affected by pantothenic acid deficiency in Pekin ducks

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Animal Nutrition 2022年第4期11卷 1-14页

作者： Jing Tang Yongbao Wu Bo Zhang Suyun Liang Zhanbao Guo Jian Hu Zhengkui Zhou Ming Xie Shuisheng Hou State Key Laboratory of Animal Nutrition Key Laboratory of Animal(Poultry)Genetics Breeding and ReproductionMinistry of Agriculture and Rural AffairsInstitute of Animal SciencesChinese Academy of Agricultural Sciences100193BeijingChina

Pantothenic acid deficiency(PAD)in animals causes growth depression,fasting hypoglycemia and impaired lipid and glucose metabolism.However,a systematic multi-omics analysis of effects of PAD on hepatic function has apparently not been reported.We investigated liver proteome and metabolome changes induced by PAD to explain its effects on growth and liver metabolic disorders.Pekin ducks(1-dold,n=128)were allocated into 2 groups,with 8 replicates and 8 birds per replicate.For 16 d,all ducks had ad libitum access to either a PAD or a pantothenic acid adequate(control,CON)diet,formulated by supplementing a basal diet with 0 or 8 mg pantothenic acid/kg of diet,respectively.Liver enlargement,elevated liver glycogen concentrations and decreased liver concentrations of triglyceride and unsaturated fatty acids were present in the PAD group compared to the CON group.Based on integrated liver proteomics and metabolomics,PAD mainly affected glycogen synthesis and degradation,glycolysis and gluconeogenesis,tricarboxylic acid(TCA)cycle,peroxisome proliferator-activated receptor(PPAR)signaling pathway,fatty acid beta oxidation,and oxidative phosphorylation.Selected proteins were confirmed by Western blotting.Downregulation of proteins and metabolites involved in glycogen synthesis and degradation,glycolysis and gluconeogenesis implied that these processes were impaired in PAD ducks,which could have contributed to fasting hypoglycemia,liver glycogen storage,insufficient ATP production,and growth retardation.In contrast,PAD also upregulated proteins and metabolites involved in fatty acid beta oxidation,the TCA cycle,and oxidative phosphorylation processes in the liver;presumably compensatory responses to produce ATP.We inferred that PAD decreased liver triglyceride and unsaturated fatty acids by activating fatty acid beta oxidation and impairing unsaturated fatty acid synthesis.These findings contributed to our understanding of the mechanisms of PAD-induced changes in hepatic metabolism.

关键词： Pantothenic acid Hepatic metabolism Proteomics Metabolomics Hypoglycemia

Dietary methionine deficiency stunts growth and increases fat deposition via suppression of fatty acids transportation and hepatic catabolism in Pekin ducks

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Journal of Animal Science and Biotechnology 2022年第6期13卷 1871-1886页

作者： Yongbao Wu Jing Tang Zhiguo Wen Bo Zhang Junting Cao Lulu Zhao Zhanbao Guo Ming Xie Zhengkui Zhou Shuisheng Hou State Key Laboratory of Animal Nutrition Key Laboratory of Animal(Poultry)Genetics Breeding and ReproductionMinistry of Agriculture and Rural AffairsInstitute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs Institute of Feed ResearchChinese Academy of Agricultural SciencesBeijing 100081China

Background:Although methionine(Met),the first-limiting dietary amino acid,has crucial roles in growth and regulation of lipid metabolism in ducks,mechanisms underlying are not well understood.Therefore,the objective was to use dietary Met deficiency to investigate the involvement of Met in lipid metabolism and fat accumulation of Pekin ducks.Methods:A total of 150 male Pekin ducks(15-d-old,558.5±4.4 g)were allocated into 5 groups(6 replicates with 5 birds each)and fed corn and soybean meal-based diets containing 0.28%,0.35%,0.43%,0.50%,and 0.58%Met,respectively,for 4 weeks.Met-deficient(Met-D,0.28%Met)and Met-adequate(Met-A,0.43%Met)groups were selected for subsequent molecular studies.Serum,liver,and abdominal fat samples were collected to assess the genes and proteins involved in lipid metabolism of Pekin ducks and hepatocytes were cultured in vivo for verification.Results:Dietary Met deficiency caused growth depression and excess fat deposition that were ameliorated by feeding diets with adequate Met.Serum triglyceride and non-esterified fatty acid concentrations increased(P<0.05),whereas serum concentrations of total cholesterol,low density lipoprotein cholesterol,total protein,and albumin decreased(P<0.05)in Met-D ducks compared to those in Met-A ducks.Based on hepatic proteomics analyses,dietary Met deficiency suppressed expression of key proteins related to fatty acid transport,fatty acid oxidation,tricarboxylic acid cycle,glycolysis/gluconeogenesis,ketogenesis,and electron transport chain;selected key proteins had similar expression patterns verified by qRT-PCR and Western blotting,which indicated these processes were likely impaired.In vitro verification with hepatocyte models confirmed albumin expression was diminished by Met deficiency.Additionally,in abdominal fat,dietary Met deficiency increased adipocyte diameter and area(P<0.05),and down-regulated(P<0.05)of lipolytic genes and proteins,suggesting Met deficiency may suppress lipolysis in adipocyte.Conclusion:Taken together,these data demonstrated th

关键词： Fat deposition Hepatic catabolism Methionine deficiency Pekin duck Proteomics

Effect of riboflavin deficiency on intestinal morphology,jejunum mucosa proteomics,and cecal microbiota of Pekin ducks

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Animal Nutrition 2023年第1期12卷 215-226页

作者： Yaxi Xu Bo Zhang Rui Zhao Kexin Gao Suyun Liang Yongbao Wu Yongsheng Hao Dapeng Liu Zhanbao Guo Jian Hu Zhengkui Zhou Ming Xie Jing Tang State Key Laboratory of Animal Nutrition Key Laboratory of Animal(Poultry)Genetics Breeding and ReproductionMinistry of Agriculture and Rural AffairsInstitute of Animal ScienceChinese Academy of Agricultural SciencesBeijing100193China

This study was to determine the effects of riboflavin deficiency(RD)on intestinal development,jejunum mucosa proteome,cecal short-chain fatty acids(SCFA)profiling,and cecal microbial diversity and community of starter Pekin ducks.Male white Pekin ducks(1 d old,n=240)were allocated into 2 groups,with 12 replicates and 10 birds per replicate in each group.For 21 d,all ducks had ad libitum access to either an RD or a riboflavin adequate(control,CON)diet,formulated by supplementing a basal diet with 0 or 10 mg riboflavin per kg of diet,respectively.Compared to the CON group,growth retardation,high mortality,and poor riboflavin status were observed in the RD group.Furthermore,RD reduced the villus height and the ratio of villus height to crypt depth of jejunum and ileum(P<0.05),indicating morphological alterations of the small intestine.In addition,dietary RD enhanced relative cecum weight and decreased cecal SCFA concentrations(P<0.05),including propionate,isobutyrate,butyrate,and isovalerate.The jejunum mucosa proteomics showed that 208 proteins were upregulated and 229 proteins were downregulated in the RD group compared to those in the CON group.Among these,RD mainly suppressed intestinal absorption and energy generation processes such as glycolysis and gluconeogenesis,fatty acid beta oxidation,tricarboxylic acid cycle,and oxidative phosphorylation,leading to impaired ATP generation.In addition,RD decreased the community richness and diversity of the bacterial community in the cecum of ducks.Specifically,RD reduced the abundance of butyrate-producing bacteria in the cecum(P<0.05),such as Eubacterium coprostanoligenes,Prevotella and Faecalibacterium.Dietary RD resulted in growth depression and intestinal hypofunction of Pekin ducks,which could be associated with impaired intestinal absorption and energy generation processes in intestinal mucosa,as well as gut microbiota dysbiosis.These findings contribute to our understanding of the mechanisms of intestinal hypofunction due to RD.

关键词： Riboflavin Deficiency Intestinal morphology Proteomics Cecal microbiota Short-chain fatty acids

Multi-objective evolutionary optimization and thermodynamics performance assessment of a novel time-dependent solar Li-Br absorption refrigeration cycle

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Science China(Technological Sciences) 2022年第11期65卷 2703-2722页

作者： MOHTARAM Soheil wu WeiDong ARYANFAR Yashar ABRISHAMI Arya OMIDI Mohammad YANG QiGuo GARCIA ALCARAZ Jorge Luis CHEN yongbao School of Energy and Power Engineering University of Shanghai for Science and Technology Shanghai 20093China Department of Electric Engineering and Computation Autonomous University of Ciudad JudrezJuarezChihuahuaMexico School of Aerospace Engineering Tsinghua University Bejing 100084China School of Energy and Power Engineering Dalian University of TechnologyDalian116024China Depariment of Industrial Engineering and Manufacturing Autonomous University of Ciudad JudrezJudrezChihuahuaMexico

This research paper aims to perform dynamics analysis,3E assessment including energy,exergy,exergoeconomic,and the multiobjective evolutionary optimization on a novel solar Li-Br absorption refrigeration cycle.The research is time-dependent,owing to solar radiation variability during different timelines.Theoretically,all the necessary thermodynamic,energy,and exergy equations are applied initially.This is followed by the thermoeconomic analysis,which takes place after defining the designing variables during the thermoeconomic optimization process and is presented together with the economic relations of the system and its thermoeconomic characteristics.Furthermore,the sensitivity analysis is undertaken,the source of system inefficiency is determined,the multi-objective evolutionary optimization of the whole system is carried out,and the optimal values are compared with the primary stage.Engineering Equation Solver(EES)software has been used to accomplish comprehensive analyses.As part of the validation process,the results of the research are compared with those published previously and are found to be relatively consistent.

关键词： solar absorption refrigeration water-lithium bromide thermodynamics performance exergy analysis multi-objective optimization

Regeneration and anti-migration of sand waves associated with sand mining in the Taiwan Shoal

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Acta Oceanologica Sinica 2023年第9期42卷 71-78页

作者： Jingjing Bao Feng Cai Chengqiang wu Huiquan Lu Yongling Zheng Yufeng Li Li Sun Chungeng Liu yongbao Li Laboratory of Ocean and Coast Geology Third Institute of OceanographyMinistry of Natural ResourcesXiamen 361005China Fujian Provincial Key Laboratory of Marine Physical and Geological Processes Xiamen 361005China Fujian Provincial Key Laboratory of Marine Ecological Protection and Restoration Xiamen 361005China Xiamen Ocean Engineering Exploration and Design Institute Co.Ltd. Xiamen 361005China School of Environment and Resource Southwest University of Science and TechnologyMianyang 621010China

Sand waves in the Taiwan Shoal are characterized by two distinct spatial scales. Giant sand waves have a length of2 kilometers with height between 5 m and 25 m, whilst small sand waves is less than 100-m long with height less than 5 m between giant sand wave peaks(crests). A series of five high-resolution multi-beam echo-sounding surveys between 2012 and 2020 in the middle of Taiwan Shoal indicated that artificial dredging on the giant sand waves had caused sand wave reform and evolution. Overall, the removal of giant sand waves significantly affected the migration of small sand waves adjacent to the dredging site, with the latter on both sides of the former appear to migrate towards the dredging pit. Moreover, in the dredging area, new sand waves emerged with wavelength much smaller than the original giant sand waves, while the convergent pattern of the small sand waves tends to store and form the giant sand waves, which might spread far beyond the survey period.

关键词： small sand wave giant sand wave anti-migration regrowing sand mining Taiwan Shoal

“十四五”时期武汉市产业发展思路与政策建议

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决策与信息 2020年第9期 17-19页

作者：吴永保武汉市社会主义学院中国城市经济学会

一、充分凸显产业政策的功能性作用功能性产业政策要促进资本、土地与人才等要素升级,培育发展数据、知识产权、品牌等新生产要素,促进资源要素自由流动、优化配置,防止垄断、鼓励公平竞争。产业规划是产业政策的重要实施手段,要“无中... 详细信息

一、充分凸显产业政策的功能性作用功能性产业政策要促进资本、土地与人才等要素升级,培育发展数据、知识产权、品牌等新生产要素,促进资源要素自由流动、优化配置,防止垄断、鼓励公平竞争。产业规划是产业政策的重要实施手段,要“无中生有”,跳出现有产业基础及门类,超前布局前瞻性、前沿性的技术与行业领域,强化产业发展的战略导向和目标引导。聚焦产业基础高级化和产业链现代化,集中政策、资源建设武汉“国之重器”重镇。重点实施普惠性减税和消费引导等政策,以及负面清单制、公平竞争审查制等,为新业态、新领域、新模式生长发育留足空间。

关键词：产业规划高级化目标引导战略导向知识产权产业政策新业态消费引导

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浅析淮安市创意休闲观光农林业发展模式

农学学报 2020年第4期10卷 93-100页

作者：吴玉沈永宝南京林业大学林学院南京210037 南方现代林业协同创新中心/国家林业局南方林木种子检验中心南京210037

创意休闲观光农林业对解决三农问题意义重大。文章分析了淮安市创意休闲观光农林业发展中存在的资金渠道单一、功能拓展不足、产业发展规划缺乏、配套设施粗放、品牌影响力不够、农民主人翁意识不强、产业链不长等问题。从农林业与旅游... 详细信息

创意休闲观光农林业对解决三农问题意义重大。文章分析了淮安市创意休闲观光农林业发展中存在的资金渠道单一、功能拓展不足、产业发展规划缺乏、配套设施粗放、品牌影响力不够、农民主人翁意识不强、产业链不长等问题。从农林业与旅游产业结合的创意模式角度出发,提出了淮安市创意休闲观光农林业6种创意模式途径,分别是"七彩花卉+婚庆产业=浪漫家园"模式、"多样苗木+休闲娱乐=创意绿化情景样板间"模式、"生态林业+运动养生=丛林运动养生园"模式、"瓜果业+童心体验=童话瓜果王国"模式"、水产业+渔乐体验=百渔乐园"模式"、传统工艺+民俗情景体验=古景再现乐园"模式。得出了创意休闲观光农林业要通过合理制定建设发展规划、全面提升农民的主人翁意识、多方拓宽资金渠道和鼓励多种经营、打造特色品牌效应、加强品牌营销、延长产业链、健全完善配套和服务体系建设、大量构建人才支撑体系、提升从业人员素养等措施才能实现纵深、可持续发展。

关键词：创意休闲观光农林业发展模式综合研究