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Fault Diagnosis of Satellite Power System Using Variable Precision Fuzzy Neighborhood Rough Set

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Fault Diagnosis of Satellite Power System Using Variable Pre...

On hydraulic falls of single-layer flow

第36届中国控制会议

作者： Mingliang Suo Monan Zhang Ding Zhou Baolong Zhu shunli Li Harbin Institute of Technology

ISBN: (纸本)9781538629185

Data-driven fault diagnosis,known to be simple and convenient,is more suitable for diagnosing the complicated systems of ***,there are two main bottlenecks of data-driven fault diagnosis methods:rule acquisition and decision *** the rough set theory can solve above issues well,the obtained rules seem to be more crisp and the diagnosis decisions are not enough ***,we propose a diagnosis approach based on variable precision fuzzy neighborhood rough set（VPFNRS） model,which could extract fuzzy rules from hybrid data with noises and make fuzzy diagnosis results based on the extracted fuzzy rule model and the weights of condition ***,we present a VPFNRS model based on neighborhood rough set,and then the theories of fuzzy rule acquisition and decision making are ***,the successful applications in satellite power system verify the feasibility and correctness of the proposed approach.

关键词： Fault Diagnosis Neighborhood Rough Set Fuzzy Theory Rule Acquisition Data-driven Satellite

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Acta Oceanologica Sinica 1996年第1期15卷 19-30页

作者： Xu Zhaoting Tian Jiwei Lou shunli andSamuel Shan pn Shen Institute of Physical Oceanography Physical Oceanography Laboratory Ocean University of Qingdao Qingdao 266003 China Department of Mathematics Institute of Applied Mathematics University of Alberta Edmonton Alta. T6G 2G1 Canada

Hydraulic falls of single-layer now are determined theoretically in terms of a time-dependent averaged fKdV equation(AfKdV equation)in phase coordinate. From the theory of the present paper it was known that difference of the asymptotic mean levels upstream and downsream at the subcritical cutoff points is just equal to a subcritical value of the AfKdV equation An experiment is carried out to examine the theoretical results. From comparison between theoreticaland experimental results, it was shown that they are in good *** the same time, it should be pointed out that the theory of the present paper is agreement with the experimental and numerical results of Forbes and can be employed to find the generating properties of the precursor solitons at near-resonance.

关键词： Hydraulic fall fKdV equation subcritical cutoff point single-layer flow

A monolithic K-band phase-locked loop for microwave radar application

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Journal of Semiconductors 2017年第2期38卷 80-88页

作者： Guangyao Zhou shunli Ma Ning Li Fan Ye Junyan Ren State Key Laboratory of ASIC and System Fudan University Shanghai 201203 China

A monolithic K-band phase-locked loop（PLL） for microwave radar application is proposed and implemented in this paper. By eliminating the tail transistor and using optimized high-Q LC-tank, the proposed voltage-controlled oscillator（VCO） achieves a tuning range of 18.4 to 23.3 GHz and reduced phase noise. Two cascaded current-mode logic（CML） divide-by-two frequency prescalers are implemented to bridge the frequency gap, in which inductor peaking technique is used in the first stage to further boost allowable input ***-stage TSPC divider chain is used to provide programmable division ratio from 64 to 127, and a second-order passive loop filter with 825 kHz bandwidth is also integrated on-chip to minimize required external *** proposed PLL needs only approximately 18.2 μs settling time, and achieves a wide tuning range from 18.4 to 23.3 GHz, with a typical output power of –0.84 dBm and phase noise of 91：92 d Bc/Hz @ 1 MHz. The chip is implemented in TSMC 65 nm CMOS process, and occupies an area of 0.56 mm^2 without pads under a 1.2 V single voltage supply.

关键词： CMOS technology integrated circuits phase-locked loop microwave

Spatial distribution pattern of Picea schrenkiana population in the Middle Tianshan Mountains and the relationship with topographic attributes

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Journal of Arid Land 2012年第4期4卷 457-468页

作者： YuTao ZHANG JiMei LI shunli CHANG Xiang LI JianJiang LU Institute of Forest Ecology Xinjiang Academy of Forestry Urumqi 830000 China Key Laboratory of Oasis Ecology of Ministry of Education Xinjiang University Urumqi 830046 China

The spatial distribution of plant populations is an important feature of population structure and it de- termines the population＇s ecological preferences, biological characteristics and relationships with environmental factors. The point pattern analysis method was adopted to study the distribution pattern of Picea schrenkiana indi- viduals of different size classes and the correlations between two size classes as well as the impact of topog- raphical attributes on the population distribution. With increasing diameter at breast height, the plant density of the P. schrenkiana population showed a declining trend. Old trees showed a random distribution at a small spatial scale （0-12 m）, whereas saplings, small trees and big trees all had an aggregated distribution at all scales. With the increase of tree age, the scales at which maximal aggregation occurred gradually increased and the aggregation strength decreased. At a small scale （0-16 m）, all size classes showed a negative correlation and the larger the difference between tree size, the more significant the negative correlation. The number of medium, big and old trees had a significantly positive correlation with elevations, whereas the number of saplings and small trees was not significantly correlated with elevations. The numbers of saplings, small and medium trees showed a significant positive correlation with slope gradient, whereas the number of big trees was not significantly correlated, and the number of old trees was negatively correlated with gradient. With the exception of old trees, saplings, small, me- dium and big trees showed negative correlations with convexity index. The study provides a theoretical basis for the conservation, rehabilitation and sustainable management of forest ecosystems in the Tianshan Mountains.

关键词： Picea schrenkiana coniferous forest population structure spatial correlation age class topographic attribute

内皮脂肪酶和脂蛋白酶在冠状动脉粥样硬化发生及发展中的作用研究进展

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陕西医学杂志 2024年第6期53卷 862-864页

作者：陈静王晓玲安康阮顺莉马瑶四川大学华西医院老年医学中心/干部医疗科四川成都610041

冠心病是主要由冠状动脉粥样硬化导致的心肌缺血性病变。动脉壁僵硬、脂质代谢异常导致动脉内膜脂质类物质聚集、纤维组织增生和钙质沉积,斑块形成,从而影响血液运输。内皮脂肪酶(EL)是一种磷脂酶,可水解血浆高密度脂蛋白胆固醇,具有促... 详细信息

冠心病是主要由冠状动脉粥样硬化导致的心肌缺血性病变。动脉壁僵硬、脂质代谢异常导致动脉内膜脂质类物质聚集、纤维组织增生和钙质沉积,斑块形成,从而影响血液运输。内皮脂肪酶(EL)是一种磷脂酶,可水解血浆高密度脂蛋白胆固醇,具有促进脂肪分解代谢的作用。脂蛋白酶(LPL)是溶解脂蛋白的关键酶,其特定的酶分子结构可水解甘油三酯,参与人体内脂蛋白代谢。因此,了解EL、LPL在冠状动脉粥样硬化发生及发展中的作用对早期防治冠心病至关重要。现对EL和LPL的结构、生物学特点以及在冠状动脉粥样硬化形成中的作用进行综述。

关键词：冠心病动脉粥样硬化内皮脂肪酶脂蛋白酶脂代谢生物学特点

临床药师开展居家药学服务对提高老年慢病患者合理用药的效果研究

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首都食品与医药 2024年第18期31卷 70-73页

作者：周虹谢飞徐建华徐月华吉顺莉江苏省海安市人民医院江苏南通226600 南通大学附属医院江苏南通226001

目的探索临床药师在社区开展居家药学服务对提高老年慢病患者合理用药水平的影响.方法选取2023年1-6月的社区老年慢病患者,随机分为对照组和实验组,通过设计问卷调查分析老年慢病患者不合理用药的可能原因,临床药师结合互联网药学服务,... 详细信息

目的探索临床药师在社区开展居家药学服务对提高老年慢病患者合理用药水平的影响.方法选取2023年1-6月的社区老年慢病患者,随机分为对照组和实验组,通过设计问卷调查分析老年慢病患者不合理用药的可能原因,临床药师结合互联网药学服务,针对性地给予实验组线上线下相结合的居家药学服务,对照组给予常规社区随访管理,比较干预前后患者用药依从性、临床指标控制情况、ADR发生率.结果临床药师给予居家药学服务干预后,实验组患者用药依从性、临床指标控制均高于对照组,ADR的发生率实验组低于对照组.结论临床药师开展居家药学服务可以明显提高老年慢病患者合理用药水平.

关键词：居家药学老年慢病临床药师合理用药

Crustal Uplift in the Longmen Shan Mountains Revealed by Isostatic Gravity Anomalies along the Eastern Margin of the Tibetan Plateau

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Acta Geologica Sinica(English Edition) 2018年第1期92卷 56-73页

作者： LI Yong YAN Zhaokun ZHOU Rongjun YAN Liang DONG shunli SHAO Chongjian Svirchev LAURENCE State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology Chengdu 610059 Sichuan China Institute of Earthquake Engineering Seismological Bureau of Sichuan Province 610041 Sichuan China

This study examines the relationship between high positive isostatic gravity anomalies （IGA）, steep topography and lower crustal extrusion at the eastern margin of the Tibetan Plateau. IGA data has revealed uplift and extrusion of lower crustal flow in the Longmen Shan Mountains （the LMS）. Firstly, The high positive IGA zone corresponds to the LMS orogenic belt. It is shown that abrupt changes in IGA correspond to zones of abrupt change of topography, crustal thickness and rock density along the LMS. Secondly, on the basis of the Airy isostasy theory, simulations and inversions of the positive IGA were conducted using three-dimensional bodies. The results indicated that the LMS lacks a mountain root, and that the top surface of the lower crust has been elevated by 11 km, leading to positive IGA, tectonic load and density load. Thirdly, according to Watts＇s flexural isostasy model, elastic deflection occurs, suggesting that the limited （i.e. narrow） tectonic and density load driven by lower crustal flow in the LMS have led to asymmetric flexural subsidence in the foreland basin and lifting of the forebulge. Finally, based on the correspondence between zones of extremely high positive IGA and the presence of the Precambrian Pengguan-Baoxing complexes in the LMS, the first appearance of erosion gravels from the complexes in the Dayi Conglomerate layer of the Chengdu Basin suggest that positive IGA and lower crustal flow in the LMS took place at 3.6 Ma or slightly earlier.

关键词： isostatic gravity anomalies crustal uplift Longmen Shan Mountains lower crustal flow,foreland basin the eastern margin of the Tibetan Plateau

基于多传感器的电力大件设备位移实时自动化监控系统

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自动化与仪表 2024年第10期39卷 105-107,112页

作者：李愿明唐新民封顺利吴伟智广东电网能源发展有限公司广州510160

为提高电力大件设备位移监测效果,开展基于多传感器的电力大件设备位移实时自动化监控系统设计研究。首先通过拉线传感器使用三球交会定位原理对位移数据进行采集;然后利用放大电路对其进行处理,通过A/D模块进行转换,获得数字信号传输... 详细信息

为提高电力大件设备位移监测效果,开展基于多传感器的电力大件设备位移实时自动化监控系统设计研究。首先通过拉线传感器使用三球交会定位原理对位移数据进行采集;然后利用放大电路对其进行处理,通过A/D模块进行转换,获得数字信号传输至单片机;最后通过单片机模块将输入的数字信号进行处理和控制,实现电力大件设备位移实时自动化监控。实验结果表明,该系统可完成电力大件设备位移实时自动化监控,且位移测量误差不超过0.3 mm,满足发电厂对于设备位移实时自动化监控的需求。

关键词：多传感器电力设备位移自动化监控实时自动化监控拉线传感器 FPGA

Detrital Zircon U-Pb Geochronology of the Triassic Sandstones from the Yanyuan Basin of Southwestern Sichuan, China

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Acta Geologica Sinica(English Edition) 2019年第6期93卷 1974-1975页

作者： YAN Zhaokun DONG shunli LI Yong CHEN Aiqing SHAO Chongjian ZHAO Shaoze State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013JiangxiChina State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu 610059SichuanChina

Objective The Yanyuan and Sichuan Basins,located at the southwestern margin of the Yangtze Block,are separated by the Kangdian *** provenance of the Upper Triassic sediments deposited in the Sichuan Basin has been ext... 详细信息

关键词： Triassic Basin zircon