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Fuzzy Filter Design for Affine Systems with Sensor Faults:A Dynamic Event-Triggered Approach

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Journal of Systems Science & Complexity 2022年第5期35卷 1761-1784页

作者： CHENG Jun wu yuyan wu Zhengguang LI Kezan School of Mathematics and Statistics Center for Applied Mathematics of GuangxiGuangxi Normal Univer-sityGuilin 541006China School of Mathematics and Statistics Guangxi Normal UniversityGuilin 541006China School of Information Science and Engineering Chengdu UniversityChengdu 610106China Institute of Cyber-Systems and Control Zhejiang UniversityHangzhou 310027China School of Mathematics and Computing Science Guilin University of Electronic TechnologyGuilin 541004China

This study addresses the issue of dynamic event-triggered-based filtering for fuzzy affine *** alleviate the utilization of constraint bandwidth resources and improve the efficiency of the signals exchange,a dynamic event-triggered protocol is forwarded to regulate the trigger instants with objective system ***,the nonhomogeneous Markov process is proposed to characterize the dynamic behaviors of sensor faults,where the time-varying transition probabilities belong to a convex polytope ***,the validity and applicability of devised filter design methodology for fuzzy affine systems are displayed via two practical models.

关键词： Dynamic event-triggered protocol fuzzy affine systems nonhomogeneous Markov process sensor fault

2015/2016超强厄尔尼诺期间非线性水汽平流对中南半岛4月降水异常的影响

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高原气象 2024年第3期43卷 711-722页

作者：邬钰嫣葛非孙雪榕金正睿林芷叶成都信息工程大学大气科学学院四川成都610225

由厄尔尼诺事件引起的极端天气气候事件对社会经济与人民生命财产安全有着重要影响。2014-2016年发生的超强厄尔尼诺事件,使得全球许多地区极端天气和气候事件频发。本文关注了中南半岛区域,利用逐月海温、降水、风场、比湿等观测和再... 详细信息

由厄尔尼诺事件引起的极端天气气候事件对社会经济与人民生命财产安全有着重要影响。2014-2016年发生的超强厄尔尼诺事件,使得全球许多地区极端天气和气候事件频发。本文关注了中南半岛区域,利用逐月海温、降水、风场、比湿等观测和再分析资料,从环流和水汽输送异常的角度出发,探讨了超强厄尔尼诺事件背景下2016年4月中南半岛降水异常偏少的可能原因。结果表明,2016年4月,在发展强盛的西北太平洋异常反气旋和副热带高压的控制下,中南半岛上空出现异常下沉气流,不利于水汽辐合产生降水。进一步通过动力诊断分析发现,Nino3.4指数与赤道东印度洋和赤道西太平洋之间纬向海温梯度(zonal gradient of SST anomalies, GSSTA)的乘积能很好地指示此次超强厄尔尼诺事件,且中南半岛上空非线性水汽平流的调制作用是造成此区域4月降水异常偏少的重要原因。2015/2016厄尔尼诺事件期间,西北太平洋异常反气旋的南侧东风与GSSTA“引导”的异常西风水汽输送相互“冲突”,削弱了太平洋和孟加拉湾对中南半岛的水汽输送。中南半岛上空大部分水汽呈现出南少北多,东高西低的模态,水汽辐散,不利于降水的形成。2016年4月,在孟加拉湾异常反气旋和西北太平洋异常反气旋的共同作用下,中南半岛对流受到抑制,暖湿气流在异常南风的引导下,向华南输送。

关键词：中南半岛厄尔尼诺降水异常环流异常水汽输送

大叶梅属地衣内生真菌的多样性及抗菌活性研究

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聊城大学学报（自然科学版） 2024年第3期37卷 80-89页

作者：郭堂丽武玉岩崔璨赵欣聊城大学生命科学学院山东聊城252059

运用组织分离法对采自江西井冈山及福建武夷山自然保护区的大叶梅属(Parmotrema)地衣进行内生真菌的分离、培养及纯化。利用形态学及分子生物学特征对其进行分类鉴定;用乙酸乙酯萃取菌株液体发酵物,旋蒸获得粗提物,并通过打孔法检测地... 详细信息

运用组织分离法对采自江西井冈山及福建武夷山自然保护区的大叶梅属(Parmotrema)地衣进行内生真菌的分离、培养及纯化。利用形态学及分子生物学特征对其进行分类鉴定;用乙酸乙酯萃取菌株液体发酵物,旋蒸获得粗提物,并通过打孔法检测地衣内生真菌提取物对以下菌株——变形杆菌Proteus ***110、表皮葡萄球菌Staphylococcus epidermidis TC149、大肠杆菌Escherichia coli ATCC25922、枯草芽孢杆菌Bacillus subtilis CS136和白色念珠菌Candida albicans TC152的抑菌活性。结果显示,从4种大叶梅属地衣中分离获得75株内生真菌,ITS测序确定了29个种级分类单元,隶属于2门,4纲,7目,10科,14属。其中,橘色黒孢霉Nigrosporaaurantiaca抑菌效果良好,可作为药物研发的良好生物资源,具有潜在的开发价值。

关键词：地衣内生真菌物种多样性抗菌活性大叶梅属

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池州地区冬季固态降水相态判别指标研究

气象与环境科学 2024年第2期47卷 9-15页

作者：孙卉吴语燕宣普蔡茶花王惠张明明池州市气象局安徽池州247100 青阳县气象局安徽青阳242800

采用池州站地面气象观测资料,遴选出20032019年冬半年固态降水过程。根据T-mode主成分分析(TPCA)法,将冬半年环流形势分为一槽一脊型(Ⅰ型)、纬向波动型(Ⅱ型)和两槽一脊型(Ⅲ型)。其中,Ⅰ型的占比最多(45.2%),Ⅱ型的次之(28.8%),Ⅲ型... 详细信息

采用池州站地面气象观测资料,遴选出20032019年冬半年固态降水过程。根据T-mode主成分分析(TPCA)法,将冬半年环流形势分为一槽一脊型(Ⅰ型)、纬向波动型(Ⅱ型)和两槽一脊型(Ⅲ型)。其中,Ⅰ型的占比最多(45.2%),Ⅱ型的次之(28.8%),Ⅲ型的占比最少(25.9%)。池州地区固态降水主要受中路冷空气影响。统计固态降水过程中的4种降水相态:雨、雨夹雪、雪、直接降雪,共得到降雨样本43个,雨夹雪样本54个,降雪样本39个,直接降雪样本52个,分别统计其出现时间;再根据箱线图法,使用ERA5资料中的高空各层温度、0℃高度、厚度层结,以及气象观测站的地面温度等进行分析,得出判别指标,并进行检验。结果表明:t_(1000hPa)266 m为雨;H_(700-850hPa)雨雪转换临界值为154 dagpm,153 dagpm以下为直接降雪,H_(850-1000hPa)<129 dagpm为纯雪,128 dagpm以下时为直接降雪;雨夹雪判别指标不明,其中地面气温效果相对较好。

关键词：降水相态 T-mode主成分分析判别指标箱线图厚度层结

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西安地区绿色办公建筑技术增量成本研究

绿色建筑 2024年第2期16卷 112-119页

作者：史光超刘达毕文蓓武玉艳陈艺文中联西北工程设计研究院有限公司陕西西安710000 西安建筑科技大学建筑学院陕西西安710055 长安大学建筑学院陕西西安710061

绿色建筑技术增量成本与效益之间的潜在关系是影响绿色技术在实践落实的关键性要素之一。提出“绿色建筑技术增量系数”概念,以陕西省西安市17个典型绿色办公建筑为例,通过对其技术措施增量成本与绿色建筑评价星级得分的关联分析,从增... 详细信息

绿色建筑技术增量成本与效益之间的潜在关系是影响绿色技术在实践落实的关键性要素之一。提出“绿色建筑技术增量系数”概念,以陕西省西安市17个典型绿色办公建筑为例,通过对其技术措施增量成本与绿色建筑评价星级得分的关联分析,从增量效益角度开展星级办公建筑的增量成本效益分析研究,提出适合办公建筑推广的绿色建筑技术措施,为西安地区绿色建筑技术推广提供量化数据支撑,促进办公建筑绿色低碳转型及高质量发展。

关键词：西安地区办公建筑绿色建筑技术增量成本效益分析

Effect of wuda granule on gastrointestinal function recovery after laparoscopic intestinal resection:a randomized–controlled trial

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Gastroenterology Report 2022年第1期10卷 257-264页

作者： Haiping Zeng Wei Wang Lixing Cao yuyan wu Wenwei Ouyang Dechang Diao Jin Wan Qicheng Chen Zhiqiang Chen The Second School of Clinical Medicine Guangzhou University of Chinese MedicineGuangzhouGuangdongP.R.China Center of TCM applications Perioperative Guangdong Provincial Hospital of Chinese MedicineGuangzhouGuangdongP.R.China Department of Gastrointestinal Surgery Guangdong Provincial Hospital of Chinese MedicineGuangzhouGuangdongP.R.China Key Unit of Methodology in Clinical Research The Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouGuangdongP.R.China Department of Global Public Health Karolinska InstituteStockholmSweden Department of Colorectal Surgery Guangdong Provincial Hospital of Chinese MedicineGuangzhouGuangdongP.R.China

Background Previous studies have suggested that the wuda granule(WDG)could promote the recovery of gastrointestinal(GI)function after gynecologic abdominal *** trial aimed to investigate the efficacy and safety of WDG in the rapid recovery of GI function in patients after laparoscopic intestinal resection in the setting of enhanced recovery after surgery(ERAS)-based perioperative *** We performed a randomized,double-blind,placebo-controlled pilot *** patients who met the inclusion criteria were randomly assigned to either the WDG group or the placebo group in a 1:1 *** patients received WDG or placebo twice a day in addition to ERAS-based perioperative care,starting on post-operative Day 1 until Day *** primary outcomes were time to first bowel movement and time to first tolerance of solid *** secondary outcomes were time to first flatus,length of hospital stay(LOS),and post-operative ileus-related *** events were also *** There were no statistically significant differences in baseline characteristics between the two *** median time to first bowel movement was significantly decreased in the WDG group compared with the control group(27.6 vs 50.1 h;P0.05)and LOS(5.0 vs 5.0 days;P>0.05)were not statistically *** occurrence rates of post-operative nausea,vomiting,abdominal distension,and abdominal pain were similar in the two *** adverse events occurred in any *** The addition of WDG to ERAS post-operative care after laparoscopic intestinal resection can safely promote the rapid recovery of GI function.

关键词： wuda granule laparoscopic intestinal resection post-operative gastrointestinal function ERAS

Photocatalytic oxidation of methane to methanol over zinc titanate supported silver catalysts

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Journal of Rare Earths 2024年第5期42卷 899-906,I0004页

作者： yuyan Gan Jinbi Huang Qian Lv Yanru Li Lizhi wu YU Tang Yuanxing Fang Pengfei Zhu Li Tan Institute of Molecule Catalysis and In-Situ/Operando Studies State Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou350108China School of Environmental Science and Engineering Shaanxi University of Science and TechnologyXi'an 70021China

The direct activation of methane under mild condition to achieve highly selective of oxygenates is a challenging *** this study,a well dispersed silver supported ZnTiO_(3) catalyst was prepared to achieve selective preparation of methanol from methane and water under mild condition.X-ray diffraction,transmission electron microscopy and X-ray photoelectron spectroscopy characterizations demonstrate that silver species are uniformly dispersed on ZnTiO_(3) surface in the form of metallic silver *** photoelectric characterizations reveal that the addition of silver species enhances light absorption and promotes charge separation of the *** the reaction conditions of 50℃and 3 MPa,the methanol is obtained as the only liquid product over the designed Ag/ZnTiO_(3) catalyst under light *** this photocatalytic process,the holes generated by ZnTiO_(3) activate water to produce intermediate·OH,which further reacts with methane to synthesize *** silver species as co-catalysts extend the light absorption range of ZnTiO_(3) as well as promote charge separation.

关键词： Photocatalytic Methane oxidation Zinc titanate Silver Methanol

Reconstructing cell lineage trees with genomic barcoding:approaches and applications

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Journal of Genetics and Genomics 2024年第1期51卷 35-47页

作者： Zizhang Li Wenjing Yang Peng wu yuyan Shan Xiaoyu Zhang Feng Chen Junnan Yang Jian-Rong Yang Advanced Medical Technology Center The First Affiliated HospitalZhongshan School of MedicineSun Yat-sen UniversityGuangzhouGuangdong 510080China Department of Genetics and Biomedical Informatics Zhongshan School of MedicineSun Yat-sen UniversityGuangzhouGuangdong 510080China Key Laboratory of Tropical Disease Control Ministry of EducationSun Yat-sen UniversityGuangzhouGuangdong 510080China

In multicellular organisms,developmental history of cell divisions and functional annotation of terminal cells can be organized into a cell lineage tree(CLT).The reconstruction of the CLT has long been a major goal in developmental biology and other related *** technological advancements,especially those in editable genomic barcodes and single-cell high-throughput sequencing,have sparked a new wave of experimental methods for reconstructing *** we review the existing experimental approaches to the reconstruction of CLT,which are broadly categorized as either image-based or DNA barcode-based *** addition,we present a summary of the related literature based on the biological insight pro-vided by the obtained ***,we discuss the challenges that will arise as more and better CLT data become available in the near *** barcoding-based CLT reconstructions and analyses,due to their wide applicability and high scalability,offer the potential for novel biological discoveries,especially those related to general and systemic properties of the developmental process.

关键词： Cell lineage tree Developmental regulation Biotechnology Computational biology

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输电线路覆冰脱落动力效应试验研究

土木工程学报 2019年第5期52卷 35-46,100页

作者：李宏男吴育炎大连理工大学海岸与近海工程国家重点实验室辽宁大连116024 沈阳建筑大学辽宁沈阳110168

输电线路的覆冰脱落容易引发导线间的碰撞闪络、线夹和连接金具的损坏,严重危害电力系统的安全运行。研究覆冰导线脱冰后的动力响应特征,可以为防止电网冰灾的设计提供有效依据。该文在实验室设计并进行50m孤立档导线的脱冰跳跃试验,通... 详细信息

输电线路的覆冰脱落容易引发导线间的碰撞闪络、线夹和连接金具的损坏,严重危害电力系统的安全运行。研究覆冰导线脱冰后的动力响应特征,可以为防止电网冰灾的设计提供有效依据。该文在实验室设计并进行50m孤立档导线的脱冰跳跃试验,通过在导线上悬挂电磁铁吸附的铁块来模拟覆冰质量,利用断电延时时间继电器控制电磁铁的通断电时间来控制覆冰脱落顺序与速度,测量覆冰导线在不同的覆冰厚度、脱冰率、脱冰位置、脱冰顺序及速度的工况下,导线端部张力和导线跨中跳跃高度,并利用有限元软件ANSYS进行了验证。试验结果表明,覆冰脱落后导线端部的最大动张力与脱冰前的最大静张力相差不大;导线覆冰从中间往两边脱落引起的跨中导线跳跃高度最大;当覆冰从导线两边往中间高速脱落时,跨中导线的跳跃高度最小。

关键词：输电线路覆冰脱落脱冰率脱冰顺序张力跳跃高度