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Impoverishment of Soil Nutrients in Gully Erosion Areas in Yuanmou Basin 被引量:10
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作者 Zhang Jian-guo, Li Hui-xia, He Xiao-rong, Sheng Xin-ju, Fan Jian-rong, Zhu BoInstitute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China 《Wuhan University Journal of Natural Sciences》 CAS 2003年第03B期1034-1040,共7页
The impoverishment of soil nutrients of nine gully head areas in Yuanmou Basin is assessed through an integrated evaluation method established on the basis of Fuzzy mathematics and multivariate mathematical theory. Re... The impoverishment of soil nutrients of nine gully head areas in Yuanmou Basin is assessed through an integrated evaluation method established on the basis of Fuzzy mathematics and multivariate mathematical theory. Results show that soil erosion of gully erosion area in Yuanmou basin has resulted in severe impoverishment of soil nutrients. All gully head areas are at high leves of impoverishment except for one at middle. By probing into and analyzing the mechanism of impoverishment of soil nutrients, we find that soil erosion has led to impoverishment of soil nutrients in a way of compacting soil, heightening position of obstacle horizon, and reducing the content of organic matter, as well as the direct loss of nutrient elements. Finally, this paper points out that soil and water conservation arming at the prevention of soil erosion is the most effective way against impoverishment of soil nutrients in Yuanmou basin. 展开更多
关键词 dry red soil soil erosion soil nutrients impoverishment integrated evaluation
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Poverty Alleviation by Helping the Disabled in Impoverished Mountainous Areas of Western China:Taking Luquan Yi and Miao Autonomous County in Yunnan Province as an Example
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作者 Kai RAO Zisheng YANG 《Asian Agricultural Research》 2019年第9期51-55,共5页
Disabled people are the poorest in the rural poor with the biggest difficulty in getting rid of poverty and the highest rate of returning to poverty.They are one of the key groups in rural poverty alleviation work.Thi... Disabled people are the poorest in the rural poor with the biggest difficulty in getting rid of poverty and the highest rate of returning to poverty.They are one of the key groups in rural poverty alleviation work.This is the key and difficult point of winning the fight against poverty.Luquan County is a national poverty-stricken county with a large number of disabled people.Since the implementation of the fight against poverty in 2016,the county has introduced a series of policies and measures to help the disabled to get rid of poverty from housing,medical care,schooling for children of the disabled and income increase,and good results have been achieved in poverty alleviation,making important contributions to the poverty alleviation of the county.Based on field research and interviews,this paper analyzes and condenses the specific practices,main results and successful experience of the poverty alleviation model in Luquan County,Yunnan Province to provide necessary reference for the targeted poverty alleviation by helping the disabled in Yunnan Province and other provinces. 展开更多
关键词 impoverished mountainous area DISABLED people Poverty alleviation Luquan YI and MIAO AUTONOMOUS COUNTY
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China's Impoverished Population Down to 30 Million
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《China Population Today》 2001年第6期15-16,共2页
关键词 THAN China’s impoverished Population Down to 30 Million DOWN
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The Content and Approaches of Human Resource Development in Impoverished Rural Regions in the Context of Targeted Poverty Alleviation
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作者 Chen Boyong Tang Zhibin Guo Li 《Contemporary Social Sciences》 2018年第2期69-78,共10页
Poverty alleviation requires knowledge support. Targeted poverty alleviation, aiming to tackle rural poverty, needs to be supported by corresponding rural human resource development. Currently, China's human resou... Poverty alleviation requires knowledge support. Targeted poverty alleviation, aiming to tackle rural poverty, needs to be supported by corresponding rural human resource development. Currently, China's human resource development in impoverished rural regions is faced with some major problems; a huge population distributed over a vast area, a lack of technological and cultural attainment, obsolete concepts, obsolete technical resources, and a significant gap between rural and urban education attainment. Rural human resource development, which is geared to targeted poverty alleviation, includes a variety of impoverished rural population-oriented trainings, such as intelligence development, skills training, modern professionalism &work attitude cultivation, physical & mental health education, as well as modern lifestyle & civilized manners guidance. Targeted poverty alleviation should be equipped with mechanisms of comprehensive layout & planning, coordinated advancement of development content and implementation, and a mechanism of organization & input. The approaches to the advancement of rural human resource development are enhancing basic education, building a system of vocational education and training, raising the social security level and improving the supporting mechanisms. 展开更多
关键词 targeted poverty alleviation impoverished rural regions human resource development
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Non-formal Education Bails Out Impoverished Ethnic Youth
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作者 ZUO YUANFENG 《The Journal of Human Rights》 2008年第4期34-36,共3页
On a hot summer day in August 2006, Lamao Cering crouched in a windy field in west China's Qinghai Province murmuring to herself. "I want to go to school," she chanted quietly over and over in an almost mantra-like... On a hot summer day in August 2006, Lamao Cering crouched in a windy field in west China's Qinghai Province murmuring to herself. "I want to go to school," she chanted quietly over and over in an almost mantra-like trance, oblivious to her father's call to come back and tend the sheep. 展开更多
关键词 UNICEF Non-formal Education Bails Out impoverished Ethnic Youth
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Village Inspiration A CPPCC National Committee member turns the fortunes of an impoverished village around with determination and innovation
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作者 Li Xiaoyu 《ChinAfrica》 2018年第4期25-25,共1页
On entering the mountainous vii lage of Yanbo in southwest China's Guizhou Province. the first thing noticeable is the flat roads and rows of new houses with cars parked in front of them. Against the hillside behind ... On entering the mountainous vii lage of Yanbo in southwest China's Guizhou Province. the first thing noticeable is the flat roads and rows of new houses with cars parked in front of them. Against the hillside behind ihe houses are several bustling village run enterprises, including a distillery and poultry farms. 展开更多
关键词 In Village Inspiration A CPPCC National Committee member turns the fortunes of an impoverished village around with determination and innovation CPC
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How to improve the COVID-19 health education strategy in impoverished regions:a pilot study 被引量:3
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作者 Huimin Wang Rujun Liao +4 位作者 Xin Chen Jie Yu Tianyu Zhu Qiang Liao Tao Zhang 《Infectious Diseases of Poverty》 SCIE 2022年第2期90-91,共2页
Background:It is of great challenge to raise the public coronavirus disease 2019(COVID-19)related health literacy(CRHL)in impoverished regions due to the limits of poor infrastructure,large proportion of vulnerable gr... Background:It is of great challenge to raise the public coronavirus disease 2019(COVID-19)related health literacy(CRHL)in impoverished regions due to the limits of poor infrastructure,large proportion of vulnerable groups,etc.However,those limits cannot be solved in the short term.Therefore,this study chose Liangshan Yi Autonomous Prefecture,one of the poorest areas in China,as a pilot,to reveal the quantitative relationships among diferent dimensions under the COVID-19 health education framework,clarify the key points for health promotion,and provide specifc suggestions for COVID-19 health education strategy in impoverished regions.Methods:A cross-sectional questionnaire survey was conducted in fve regions of Liangshan Yi Autonomous Prefecture in 2020.There were 2,100 individuals sampled by multi-stage method.This survey mainly measured the four dimensions:CRHL,COVID-19 related tense psychological reactions(CRTPR),COVID-19 related information report acquisition(CRIRA),and general health literacy(GHL).The multivariate logistic regression was used to explore the infuence of demographic characteristics on each dimension.Furthermore,to quantify the relationships among different dimensions,this study employed the structural equation model(SEM),and analyzed the mediating efects of CRHL and CRIRA as well as the moderating efects of regional characteristic variables.Results:The CRHL played an important role in promoting COVID-19 health education,reaching 52.5%in Liangshan Yi Autonomous Prefecture.The GHL(β=0.336)and age(β=0.136)had statistically positive impacts on CRHL.The CRHL afected CRTPR negatively(β=−0.198)and CRIRA positively(β=0.052).The CRHL played signifcant mediating roles among the four dimensions(P<0.05).Efectiveness of government prevention and control as well as the ethnicity moderated not only the relationships between CRHL and other dimensions,but also the mediating efect of CRHL(P<0.05).People with lower income and education levels had lower GHL(β=0.286,1.292).The youth were more likely to show CRTPR(β=−0.080).Conclusions:By proposing and verifying the theoretical framework,this study put forward specifc suggestions on how to improve COVID-19 health education strategies in impoverished regions via implementation methods,key groups and efect evaluation,which also provided references about future public health emergencies for other impoverished regions of the world. 展开更多
关键词 COVID-19 Health education strategy impoverished region Health literacy Structural equation model Mediating efect Moderating efect
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领悟社会支持对贫困大学生主观幸福感的影响:自尊与心理韧性的链式中介作用
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作者 程子良 廖传景 +2 位作者 胡嘉欢 徐敏 翁添富 《黑龙江科学》 2026年第1期63-67,共5页
为探究领悟社会支持对贫困大学生主观幸福感的内在作用机制,采用问卷调研法对1589名贫困大学生进行调查。结果显示,贫困大学生领悟社会支持、自尊、心理韧性和主观幸福感两两之间呈显著正相关关系,领悟社会支持、自尊和心理韧性是影响... 为探究领悟社会支持对贫困大学生主观幸福感的内在作用机制,采用问卷调研法对1589名贫困大学生进行调查。结果显示,贫困大学生领悟社会支持、自尊、心理韧性和主观幸福感两两之间呈显著正相关关系,领悟社会支持、自尊和心理韧性是影响贫困大学生主观幸福感的重要因素。贫困大学生的自尊与心理韧性在领悟社会支持和主观幸福感之间起链式中介作用。 展开更多
关键词 领悟社会支持 主观幸福感 自尊 心理韧性 贫困大学生
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寒门何以出贵子:工农子女精英大学入学机会的历史考察
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作者 柳青 董美英 《黑龙江高教研究》 北大核心 2026年第4期30-37,共8页
近年来,工农子女尤其农民子女进入精英大学的机会呈下降趋势,“寒门难出贵子”已成为重要的学术议题。基于对1952—2002年北京大学与苏州大学学籍卡历史数据的再分析发现:新中国成立后较长时期内工农子女在精英大学中占比显著(总体四成... 近年来,工农子女尤其农民子女进入精英大学的机会呈下降趋势,“寒门难出贵子”已成为重要的学术议题。基于对1952—2002年北京大学与苏州大学学籍卡历史数据的再分析发现:新中国成立后较长时期内工农子女在精英大学中占比显著(总体四成以上),呈现出大规模“寒门出贵子”的历史现象。引入布罗代尔“长时段”理论框架,超越既有研究停留于政策事件的解释层次,从深层结构出发,提出工农子女精英大学入学机会增加的三重历史机制,即国家建构与社会平等的同构、全民教育推动的工农文化资本跨代重建、以可见可比的分数为核心的高考程序正义。面向当前的市场经济社会,进一步提出强化向工农子女倾斜的保障性机制、推进城乡教育一体化发展、高考选拔过程的透明治理等实践路径,增加工农子女精英大学入学机会。 展开更多
关键词 寒门贵子 精英大学 工农子女 入学机会均等 长时段
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相对贫困地区的生成逻辑、治理难点与共富策略
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作者 高强 张海为 曾恒源 《新疆师范大学学报(哲学社会科学版)》 北大核心 2026年第1期52-61,共10页
加快相对贫困地区发展是推进乡村全面振兴的内在要求,也是实现农村农民共同富裕的必然路径。文本遵循“生成逻辑—治理难点—应对策略”的逻辑主线,对相对贫困的形成机制、现实挑战和实现共同富裕的策略进行探究。研究表明:相对贫困的... 加快相对贫困地区发展是推进乡村全面振兴的内在要求,也是实现农村农民共同富裕的必然路径。文本遵循“生成逻辑—治理难点—应对策略”的逻辑主线,对相对贫困的形成机制、现实挑战和实现共同富裕的策略进行探究。研究表明:相对贫困的形成不仅与制度设计和政策安排紧密相关,而且与地理区位及资源禀赋密切相连,并在多维因素共同作用下形成低水平均衡的路径依赖。从实践层面看,开展相对贫困治理面临帮扶对象识别监测之难、长效治理路径转型之困以及内生发展动力激发之阻三大挑战。文本认为,在全面推进乡村振兴背景下,相对贫困地区与欠发达地区具有较高的重合度,因此,相对贫困地区治理与欠发达地区常态化帮扶具有同等的社会价值和政策取向。新时代新征程,要聚焦共同富裕目标,加快健全相对贫困治理体系,通过理念重构、机制优化、路径创新和制度变革,系统破解发展瓶颈、补齐发展短板,使相对贫困地区跟上国家现代化步伐。 展开更多
关键词 相对贫困地区 相对贫困人口 共同富裕 乡村振兴
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清醒的“上头”:青年刷微短剧的行为动因及其情感结构
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作者 王志豪 冷小雨 《中国青年研究》 北大核心 2026年第2期93-101,M0005,共10页
微短剧作为短视频与网络爽文相结合的新兴媒介形态,已成为当代青年普遍流行的日常娱乐方式。本文以情感结构理论为分析视角,通过深度访谈方法,剖析青年刷微短剧的内在动因及其复杂的情感结构。研究认为,微短剧精准迎合了青年“即时满足... 微短剧作为短视频与网络爽文相结合的新兴媒介形态,已成为当代青年普遍流行的日常娱乐方式。本文以情感结构理论为分析视角,通过深度访谈方法,剖析青年刷微短剧的内在动因及其复杂的情感结构。研究认为,微短剧精准迎合了青年“即时满足”的情感需求,成为他们高耗能生活中的情绪缓冲带,并在叙事逻辑与视觉体验两个层面满足了年轻人的审美期待。在这一过程中,一种由回避、掌控、依附与虚度四种类型交织而成的当代青年情感结构得以显现。微短剧的热潮既为青年提供了情绪慰藉,也在消费主义与资本逻辑的裹挟下,进一步加剧了他们的意义困境。 展开更多
关键词 情感结构 微短剧 青年意义贫困 休闲
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Coronavirus disease 2019 epidemic in impoverished area: Liangshan Yi autonomous prefecture as an example
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作者 Ru-Jun Liao Chun-Nong Ji-Ke +4 位作者 Tao Zhang Qiang Liao Ling Li Tian-Yu Zhu Shao-Yong Bian 《Infectious Diseases of Poverty》 SCIE 2020年第4期168-168,共1页
Background The outbreak of coronavirus disease 2019(COVID-19)had spread worldwide.Although the world has intensively focused on the epidemic center during this period of time,it is imperative to emphasize that more at... Background The outbreak of coronavirus disease 2019(COVID-19)had spread worldwide.Although the world has intensively focused on the epidemic center during this period of time,it is imperative to emphasize that more attention should also be paid to some impoverished areas in China since they are more vulnerable to disease outbreak due to their weak health service capacities.Therefore,this study took Liangshan Yi Autonomous Prefecture as an example to analyze the COVID-19 epidemic in the impoverished area,evaluate the control effect and explore future control strategies.Methods In this study,we collected information including age,gender,nationality,occupation,and address of all COVID-19 cases reported from 25 January 2020 to 23 April 2020 in Liangshan Prefecture from the Nationwide Notifiable Infectious Diseases Reporting Information System(NIDRIS),which were used under license and not publicly available.Additionally,we retrieved other information of cases through epidemiological investigation reports reviewing.Data were analyzed using the software Excel 2010 and SPSS 17.0.The geographic distribution of cases was mapped using ArcGIS10.2.Results By 23 April 2020,a total of 13 COVID-19 cases and two asymptomatic SARS-CoV-2 carriers were reported in Liangshan,in three family clusters.Among the cases,eight cases had a history of sojourning in Hubei Province(61.54%),of which six were related to Wuhan.Cases aged under 44 years accounted for 61.54%,with no child case.The delay of patients’hospital visiting,and the low degree of cooperation in epidemiological investigation are problems.Conclusions During the study period,Liangshan was well under control.This was mainly contributed to strict preventive strategies aimed at local culture,inter-sectoral coordination and highly degree of public cooperation.Besides,some possible environmentally and culturally preventive factors(e.g.,rapid air flow and family concept)would affect disease prevention and control.In the next step,the health education about COVID-19 should be strengthened and carried out according to the special culture of ethnic minorities to enhance public awareness of timely medical treatment. 展开更多
关键词 SARS-CoV-2 Coronavirus disease 2019 impoverished area EPIDEMIOLOGY
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Problems and thoughts on the present system of assisting impoverished students in Chinese higher education institutes
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作者 LIANG Jinxia XU Lili 《Frontiers of Education in China》 2007年第4期620-633,共14页
By sending out questionnaires to 106 counselors of 98 colleges and universities,panel discussion and interviewing,the authors implement a fairly comprehensive survey on the development of the financial aid system of a... By sending out questionnaires to 106 counselors of 98 colleges and universities,panel discussion and interviewing,the authors implement a fairly comprehensive survey on the development of the financial aid system of assisting impoverished students in higher education institutes(HEIs)in China,including national student loans,award fund supported by government,on campus workstudy and subsidy,etc.This paper aims at probing into some major problems that exist in this system and offer some suggestions and countermeasures on how to improve and develop the system. 展开更多
关键词 national student loans financial aid system impoverished students
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“人工智能+”背景下的贫困生精准识别工作探究
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作者 刘杰琛 《信息与电脑》 2026年第3期5-7,共3页
在高校家庭经济困难学生资助工作中,传统识别方法存在信息不对称、主观判断偏差和动态监测不足等问题,在一定程度上影响了资助的效果和公平性。文章深入探讨人工智能技术在贫困生精准识别中的应用,并采用构建大数据平台、运用机器学习... 在高校家庭经济困难学生资助工作中,传统识别方法存在信息不对称、主观判断偏差和动态监测不足等问题,在一定程度上影响了资助的效果和公平性。文章深入探讨人工智能技术在贫困生精准识别中的应用,并采用构建大数据平台、运用机器学习算法、引入自然语言处理技术、建立动态监测系统和搭建智能服务平台等策略,旨在提高贫困生识别准确性和效率,优化资助资源配置,为有效实现教育公平提供技术支撑。 展开更多
关键词 人工智能 贫困生识别 精准资助 机器学习
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大关县贫困村搬迁后闲置建筑空间再利用研究
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作者 王宥迪 《建筑与文化》 2026年第1期197-199,共3页
针对易地扶贫搬迁致使大关县高寒山地村落建筑出现闲置的问题,本研究通过开展建筑测绘工作并与村民进行深入访谈,提出了“红绿融合”的再生策略,创新性地融入“旅居型乡村”理念,构建了“民宿集群+文化展演+生态研学”的三体联动模式,... 针对易地扶贫搬迁致使大关县高寒山地村落建筑出现闲置的问题,本研究通过开展建筑测绘工作并与村民进行深入访谈,提出了“红绿融合”的再生策略,创新性地融入“旅居型乡村”理念,构建了“民宿集群+文化展演+生态研学”的三体联动模式,并依托玉碗村旧民居改造对该模式在经济增收与文化存续方面的协同效益进行了验证。研究成果为西南山地乡村达成“空间—产业—文化”协同振兴提供了范式参考。 展开更多
关键词 大关县 贫困村搬迁 闲置建筑 空间再利用
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连续充填分段空场采矿方法在滩涧山金矿的应用
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作者 张俊锋 《世界有色金属》 2026年第3期121-123,共3页
针对滩涧山金矿开采过程中面临的采空区两帮易片帮、遥控出矿效率偏低(平均台班效率仅为470吨)等技术难题,本文创新性地提出连续充填分段空场采矿法。该方法以全工序机械化作业为基础,结合“超前充填+胶皮物理隔离”联合控制体系,有效... 针对滩涧山金矿开采过程中面临的采空区两帮易片帮、遥控出矿效率偏低(平均台班效率仅为470吨)等技术难题,本文创新性地提出连续充填分段空场采矿法。该方法以全工序机械化作业为基础,结合“超前充填+胶皮物理隔离”联合控制体系,有效缩短采空区暴露时间、减小暴露面积,并通过设置的矿石与充填废石隔离装置,将矿石贫化率从12.5%显著降低至7.8%。工业试验结果表明:相较于传统嗣后充填采矿法,该方法使台班出矿效率由470吨/台班提高至550吨/台班,提升幅度达17.0%;同时,出矿成本由15.28元/吨下降至13.0元/吨,降幅为14.9%。该采矿方法为后退式落矿,理论上,若矿体在走向上连续,采场没有长度限制,将大大减少切割天井数量,缩短循环时间,该技术将充填工序有机融入采矿循环,构建了“采矿-充填-隔离”一体化的动态平衡系统,具有机械化水平高、安全性能好、生产效率突出等优势,为类似地质条件下矿山实现安全、高效开采提供了理论支撑与实践参考。 展开更多
关键词 连续充填 全工序机械化 贫化控制 物理隔离 出矿效率 采矿循环 经济效益
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高校家庭经济困难学生资助获得感现实困境与提升路径研究 被引量:1
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作者 吴素红 陈庆宾 《湖北开放职业学院学报》 2025年第1期52-54,共3页
高校家庭经济困难学生是高校资助育人工作对象,其获得感水平是高校资助育人实效的直接体现。调查发现,当前高校家庭经济困难生资助获得感还存在物质获得与精神获得不平衡、能力获得与发展获得不全面、安全获得与认同获得不完善、主体获... 高校家庭经济困难学生是高校资助育人工作对象,其获得感水平是高校资助育人实效的直接体现。调查发现,当前高校家庭经济困难生资助获得感还存在物质获得与精神获得不平衡、能力获得与发展获得不全面、安全获得与认同获得不完善、主体获得与价值获得不充分等问题,影响获得感水平和育人实效。为落实立德树人根本任务,提升家庭经济困难学生资助获得感,应从四个方面着手:完善体系,推动资助全面性;把握需求,提升资助精准性;多方联动,强化资助实践性;聚焦提升,创新资助发展性。 展开更多
关键词 家庭经济困难学生 获得感 现实困境 提升路径
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基于LSTM神经网络的高校精准资助模型研究 被引量:3
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作者 柯琳 周俊 夏斌 《佳木斯大学学报(自然科学版)》 2025年第3期148-150,180,共4页
高校学生资助体系是国家教育扶贫的重要组成部分,现阶段对高校贫困生资助过程中存在人为因素干扰、缺少量化手段等问题,影响了教育资助的公平和效益。在对教育精准资助研究现状详细分析基础上,指出人工智能在解决教育资助问题上的新路... 高校学生资助体系是国家教育扶贫的重要组成部分,现阶段对高校贫困生资助过程中存在人为因素干扰、缺少量化手段等问题,影响了教育资助的公平和效益。在对教育精准资助研究现状详细分析基础上,指出人工智能在解决教育资助问题上的新路径。结合LSTM神经网络模型在处理和预测时序数据中的优势,设计和开发了基于LSTM的高校贫困生精准资助模型,研究模型隐层单元数与贫困生资助等级识别率之间的关系以优化模型。实验结果表明当隐层神经元数为120时,对受国家助学金资助的贫困大学生分类识别率最高且达到98.11%。该模型的建立为高校大学生助学资助工作提供了智能量化手段,对于教育扶贫公平和提高贫困大学生资助效益具有重要意义。 展开更多
关键词 高校贫困生 精准资助 长短时记忆神经网络 人工智能
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中国连片开发扶贫政策效果评估与前景展望 被引量:1
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作者 卢盛峰 杨光照 《财经理论研究》 2025年第1期12-37,共26页
通过构建包括2000-2020年村/社区面板、企业面板和县级面板在内的丰富数据集,使用断点回归设计系统评估了中国连片开发扶贫政策的经济效果。研究结果表明:中国连片特困地区扶贫开发短期内大幅度提升了农村可支配收入,同时对异质性企业... 通过构建包括2000-2020年村/社区面板、企业面板和县级面板在内的丰富数据集,使用断点回归设计系统评估了中国连片开发扶贫政策的经济效果。研究结果表明:中国连片特困地区扶贫开发短期内大幅度提升了农村可支配收入,同时对异质性企业产生了复杂影响,尤其提高了劳动密集型产业的全要素生产率和产出;促进了中长期经济增长,具体表现为提高了宏观工业产出、实现了区域内部门间劳动力转移、总体上提高了资本存量和生产率,同时重塑了基础设施和公共服务布局;在后续一系列稳健性检验中,上述结论依然显著成立。在此基础上,提出了巩固拓展脱贫攻坚成果、引导土地经营权有序流转、优化农村公共服务空间布局和推动乡村产业发展等建议,并对未来中国巩固拓展脱贫攻坚成果的政策制定进行了前景展望。 展开更多
关键词 连片特困地区 扶贫开发 工业化 全要素生产率
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PKE-PF及其在滚动轴承故障预测中的应用
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作者 沈建 陈小忠 +1 位作者 徐波 罗鹏 《机械设计与制造》 北大核心 2025年第12期41-46,共6页
针对数据不完备情形下轴承故障预测中常见的粒子枯竭问题,提出了一种先验知识强化粒子滤波(Priori Knowledge Enhanced Particle Filter,简称PKE-PF)方法。基于已有轴承全寿命退化数据以及迁移学习理论中的参数迁移方法,开展粒子滤波(Pa... 针对数据不完备情形下轴承故障预测中常见的粒子枯竭问题,提出了一种先验知识强化粒子滤波(Priori Knowledge Enhanced Particle Filter,简称PKE-PF)方法。基于已有轴承全寿命退化数据以及迁移学习理论中的参数迁移方法,开展粒子滤波(Particle Filter,简称PF)方法中极为重要的粒子初始化优化工作,提升粒子有效性,避免粒子过早枯竭问题。基于滚动轴承全寿命退化实验开展方法验证,验证结果表明,相较于传统的PF方法及其改进方法,PKE-PF方法能够有效避免粒子过早枯竭,获得了更为理想的故障预测结果,为工程实际提供了一种有益的故障预测参考方法。 展开更多
关键词 故障预测 粒子滤波 粒子枯竭 迁移学习 先验知识强化 轴承
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