检索结果-南通市图书馆

A Recursive Approach to Event-based Resilient Filtering for Time-varying Systems with Stochastic Uncertainties

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Recursive Approach to Event-based Resilient Filtering for ...

第30届中国控制与决策会议

作者： Chaoqing Jia jun hu Dongyan Chen Department of Mathematics Harbin University of Science and Technology School of Engineering University of South Wales

In this paper, the event-based resilient filtering problem is investigated for a class of time-varying system with stochastic uncertainties. The event-triggered scheme is adopted in order to decrease communication frequency and save network resources. The stochastic uncertainties are considered to characterize the modelling errors. The filter gain perturbation is modelled by norm-bounded uncertainties. The purpose of this paper is to propose an event-based filtering method for addressed time-varying systems such that, for both stochastic uncertainties and filter gain perturbations, an optimized upper bound of the filtering error covariance is guaranteed by means of designing the filter gain. Finally, a simulation example is provided to illustrate the effectiveness of the proposed recursive filtering scheme.

关键词： Time-varying systems event-triggered mechanism resilient filtering stochastic uncertainties

Robust Static Object Detection Using Laser Scanner in Autonomous Race Car

在线全文

cnki会议

学校读者我要写书评

暂无评论

Robust Static Object Detection Using Laser Scanner in Autono...

2018中国汽车工程学会年会

作者： PAN Bo NI jun hu Jibin Beijing Institute of Technology

In this paper,a novel robust detection with low-height objects approach using sparse lasers is *** detection method is consisting of RANSAC and cluster to process 3 D point *** RANSAC,it can abstract ground surface and remove it in different driving *** in cluster,it can divide points into different groups which represents objects based on RANSAC ***,there is an Formula Autonomous Race car designed by author to make experiment and it had took part in Formula Student China *** experiment to detect cones with race car shows detection performance comparing with different conditions and approach.

关键词： RANSAC object cluster autonomous race car robust detection

A new method of testing pile using dynamic P-S-curve made by amplitude of wave train

在线全文

cnki会议

学校读者我要写书评

暂无评论

Acta Seismologica Sinica(English Edition) 2004年第6期17卷 725-734页

作者： hu Yi-li(胡毅力) XU jun(许峻) DUAN Yong-kong(段永康) XU Zhao-yong(许昭永) YANG Run-hai(杨润海) ZHAO Jin-ming(赵晋明) Department of Geophysics Yunnan University Kunming 650091 China Kunming Nanfang Technology and Consultation Company for Rock and Soil Kunming 650091 China Kunming Nanfang Technology and Consultation Company for Rock and Soil Kunming 650091 China Institute of Disaster Prevention of Yunnan Province Kunming 650041 China Institute of Disaster Prevention of Yunnan Province Kunming 650041 China Institute of Disaster Prevention of Yunnan Province Kunming 650041 China

A new method of detecting the vertical bearing capacity for single-pile with high strain is discussed in this paper. A heavy hammer or a small type of rocket is used to strike the pile top and the detectors are used to record vibra- tion graphs. An expression of higher degree of strain (deformation force) is introduced. It is testified theoretically that the displacement, velocity and acceleration cannot be obtained by simple integral acceleration and differential velocity when long displacement and high strain exist, namely when the pile phase generates a whole slip relative to the soil body. That is to say that there are non-linear relations between them. It is educed accordingly that the force P and displacement S are calculated from the amplitude of wave train and (dynamic) P-S curve is drew so as to determine the yield points. Further, a method of determining the vertical bearing capacity for single-pile is dis- cussed. A static load test is utilized to check the result of dynamic test and determine the correlative constants of dynamic-static P(Q)-S curve.

关键词： amplitude of wave train dynamic P-S curves detecting of bearing capacity of a pile

Strong Consistency of M Estimator in Linear Model for φ-mixing Samples

在线全文

学校读者我要写书评

暂无评论

Communications in Mathematical Research 2013年第1期29卷 32-40页

作者： Wang Xue-jun hu Shu-he Ling Ji-min Wei Yun-fei Chen Zhu-qiang Wang De-hui School of Mathematical Science Anhui University

The strong consistency of M estimator of regression parameter in linear model for φ-mixing samples is discussed by using the classic Rosenthal type inequality. We get the strong consistency of M estimator under lower... 详细信息

关键词： φ-mixing sample M estimator strong consistency

Coaxial radiography guided puncture technique for percutaneous transforaminal endoscopic lumbar discectomy:A randomized control trial

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2023年第16期11卷 3802-3812页

作者： Li-Ping Chen Bin-Song Wen Heng Xu Zheng Lu Lai-jun Yan Han Deng Hong-Bo Fu Hong-Jie Yuan Pei-Pei hu Department of Pain Management The Affiliated Hospital of Xuzhou Medical CollegeXuzhou 221000Jiangsu ProvinceChina Department of Pain Management Nantong Hospital of Traditional Chinese MedicineNantong 226000Jiangsu ProvinceChina Department of Neurosurgery Haian People's HospitalNantong 226001Jiangsu ProvinceChina

BACKGROUND The coaxial radiography-guided puncture technique(CR-PT)is a novel technique for endoscopic lumbar *** the X-ray beam and the puncturing needle are maintained in a parallel and coaxial direction,the X-ray beam can be used to guide the trajectory angle,facilitating the choice of the puncture site and providing real-time *** puncture technique offers numerous advantages over the conventional anterior-posterior and lateral radiography-guided puncture technique(AP-PT),especially in cases of herniated lumbar discs with a hypertrophied transverse process or articular process,high iliac crest,and narrowed intervertebral *** To confirm whether CR-PT is a superior approach to percutaneous transforaminal endoscopic lumbar discectomy compared to *** In this parallel,controlled,randomized clinical trial,herniated lumbar disc patients appointed to receive percutaneous endoscopic lumbar discectomy treatment were recruited from the Pain Management Department of the Affiliated Hospital of Xuzhou Medical University and Nantong Hospital of Traditional Chinese ***-five participants were enrolled and divided into either a CR-PT group or an AP-PT *** CR-PT group underwent CR-PT,and the AP-PT group underwent *** number of fluoroscopies during puncturing,puncture duration(min),surgery duration(min),VAS score during puncturing,and puncture success rate were *** Sixty-five participants were included,with 31 participants in the CR-PT group and 34 in the AP-PT *** participant in the AP-PT group dropped out due to unsuccessful *** number of fluoroscopies[median(P25,P75)]was 12(11,14)in the CR-PT group vs 16(12,23)in the AP-PT group,while the puncture duration(mean±SD)was 20.42±5.78 vs 25.06±5.46,*** VAS score was 3(2,4)in the CR-PT group vs 3(3,4)in the AP-PT *** subgroup analysis was performed,considering only the participants with L5/S1 segment herniation:9 patients un

关键词： Herniated lumbar disc Coaxial Puncture Anterior-posterior L5/S1

益气温阳活血中药联合参附注射液治疗三度房室传导阻滞合并冠状T波及肺栓塞1例

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

北京中医药 2024年第2期43卷 223-225页

作者：张笑涵崔景润张振鹏王师菡李军胡元会杜柏中国中医科学院广安门医院心血管科北京100053

肺栓塞(pulmonary embolism,PE)可导致心电图广泛前壁导联缺血性改变,合并有传导异常改变如三度房室传导阻滞(atrioventricular block,AVB)却较为少见[1]。2021年欧洲心脏学会(ESC)指南中,将“不推荐可纠正的AVB患者接受起搏治疗”列为... 详细信息

肺栓塞(pulmonary embolism,PE)可导致心电图广泛前壁导联缺血性改变,合并有传导异常改变如三度房室传导阻滞(atrioventricular block,AVB)却较为少见[1]。2021年欧洲心脏学会(ESC)指南中,将“不推荐可纠正的AVB患者接受起搏治疗”列为Ⅲ级推荐[1]。寻找PE后新发AVB病因并判定可逆性,对衡量老年患者群体起搏器植入风险与获益有重要临床意义。本例以温阳救急为要,采取中西医结合治法取得了满意疗效,报告如下。

关键词：三度房室传导阻滞肺栓塞益气温阳活血参附注射液

The shape effect of reconstituted high-density lipoprotein nanocarriers on brain delivery and Aβ clearance

在线全文

学校读者我要写书评

暂无评论

Nano Research 2018年第10期11卷 5615-5628页

作者： huahua Song Xinyi Ma Jianrong Xu Qingxiang Song Meng hu Xiao Gu Qian Zhang Lina Hou Lepei Chen Yukun huang Ping Yu Dayuan Wang Gan Jiang Meng huang jun Chen Hongzhuan Chen Xiaoling Gao Department of Pharmacology and Chemical Biology Faculty of Basic Medicine School of Medicine Shanghai.liao Tong University Shanghai 200025 China Key Laboratory of Smart Drug Delivery Ministry of Education School of Pharmacy Fudan University Lane 826 Zhangheng Road Shanghai 201203 China Department of Pharmacy Ren Ji Hospital School of Medicine Shanghai Jiao Tong University Shanghai 200127 China

Accumulation of extracellular β-amyloid （Aβ） is crucial for the pathogenesis of Alzheimer＇s disease （AD）, and the development of novel therapeutic agents that can both accelerate Aβ clearance and inhibit the subsequent pathological cascades is regarded as a promising strategy for AD management. In our previous study, we have constructed discoidal apolipoprotein E3-reconstituted high-density lipoprotein （ApoE3-rHDL） as an efficient nanoplatform that can penetrate the blood-brain barrier and accelerate Aβ clearance for a combination treatment of AD. To further improve its drug loading capacity, we hypothesized that spherical rHDL might serve as a more powerful nanocarrier if it has the same brain delivery and Aβ clearance abilities as the discoidal rHDL does. To evaluate the potential of spherical rHDL as a promising alternative for the combination therapy for AD, here, we investigated the effect of the shape of rHDL on its brain delivery, Aβ clearance, and anti-AD efficacy. We found that spherical rHDL had stronger Aβ-binding affinity than discoidal rHDL did, more effectively facilitated microglial uptake and degradation of Aβ-42, achieved better brain distribution after intravenous administration, and more powerfully reduced Aβ deposition, decreased microglia activation, attenuated neurological damage, and rescued memory deficits in a mouse model of AD. Among the rHDLs evaluated, monosialotetrahexosyl ganglioside-incorporated spherical rHDL exerted the best effect. The findings of this study for the first time show a shape effect of an rHDL nanocarrier on its biological functions and suggest that a spherical lipoprotein-mimic nanocarrier may serve as a more efficient multifunctional nanoplatforrn for AD therapy.

关键词： reconstituted high density lipoprotein β-amyloid apolipoprotein E spherical discoidal Alzheimer's disease

CONTROLLED ULTRASONIC CONCENTRATION OF NANO PARTICLES ON A NONVIBRATING SUBSTRATE

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CONTROLLED ULTRASONIC CONCENTRATION OF NANO PARTICLES ON A N...

2015全国压电和声波理论及器件技术研讨会

作者： Xiao-fei WANG jun-hui hu State Key Lab of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics

We show a method of concentrating nanoscale samples in a film of aqueous suspension on a stationary substrate(not in vibration),which employs the acoustic streaming generated by an ultrasonically vibrating needle parallel to and above the stationary *** acoustic streaming eddy on the substrate surface brings nano particles(NPs)to the center of the *** SiO nano particles with a diameter of 250 nm may form one circular spot on the stationary substrate,with a diameter up to 400 *** principles of the above phenomena are analyzed and verified by the finite element method.

关键词： Nanoparticle Concentration Acoustic streaming Nonvibrating Substrate

New antibacterial depsidones from an ant-derived fungus Spiromastix ***-1

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chinese Journal of Natural Medicines 2022年第8期20卷 627-632页

作者： GUO Zhi-Kai hu Wen-Yong ZHAO Li-Xing CHEN Yan-Chi LI Sui-jun CHENG Ping GE hui-Ming TAN Ren-Xiang JIAO Rui-hua State Key Laboratory of Pharmaceutical Biotechnology Institute of Functional BiomoleculesSchool of Life SciencesNanjing UniversityNanjing 210093China Hainan Key Laboratory of Tropical Microbe Resources Institute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikou 571101China Yunnan Key Laboratory of Vaccine Research&Development on Severe Infectious Diseases Institute of Medical BiologyChinese Academy of Medical SciencesKunming 650118China Yunnan Institute of Microbiology Yunnan UniversityKunming 650091China

Six new(1–6)and seven known depsidones(7–13)were isolated from the culture of an ant(Monomorium chinensis)-derived fungus Spiromastix *** structures were elucidated by extensive spectroscopic analysis including high resolution MS,1D and 2D NMR *** new bromide depsidones were obtained through supplementing potassium bromide in the fermentation medium of Spiromastix *** isolated compounds showed various bioactivities against the tested phytopathogenic ***,new bromide compound 4,named spiromastixone S,exhibited the strongest activity against Xanthomonas oryzae *** with a MIC value of 5.2μmol·^L(−1).

关键词： Fungus Spiromastix sp Depsidones Phytopathogenic bacteria Antibacterial