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Research on the Winter Study Movement in Shanxi Anti-Japanese Base Area from the Perspective of Mass
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作者 XIN Meng 《Journal of Literature and Art Studies》 2021年第1期43-52,共10页
Playing a major role on social education in Shanxi anti-Japanese base area,the winter study movement is a popular education movement implemented by the Communist Party of China,which takes into consideration the base ... Playing a major role on social education in Shanxi anti-Japanese base area,the winter study movement is a popular education movement implemented by the Communist Party of China,which takes into consideration the base area’s reality and makes full use of the leisure time in winter of rural area.With a wide coverage of education in culture,politics,daily life,anti-Japanese war as well as other aspects.The winter study movement provides efficient education to rural peasants,achieving great effects on mobilization on the masses of the people.This paper focuses on the original archives of the grassroots,conveying comprehensive analysis on the institutional arrangement,organizational mechanism and specific implementation of the winter study movement,thus to provide an overall understanding of the winter study movement in Shanxi anti-Japanese base area from the perspective of mass mobilization. 展开更多
关键词 mass mobilization Shanxi Anti-Japanese base area winter study movement
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Construction of Industrialization Development Model for"1+4+X"Community-Based Elderly Care in Gannan Old Revolutionary Base Area in the Context of Population Aging
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作者 Chenxin YANG Jun XIAO +2 位作者 Liyuan WANG Jiaxin LIU Yangkai LU 《Asian Agricultural Research》 2023年第5期8-10,16,共4页
In the context of controlling population development in a planned way,China entered an aging society in the early 21 st century.In this context,how to meet the needs of the elderly care and form an effective elderly c... In the context of controlling population development in a planned way,China entered an aging society in the early 21 st century.In this context,how to meet the needs of the elderly care and form an effective elderly care model has become a key problem to be solved urgently by local government departments.With the continuous advancement of the elderly care policy,the community-based elderly care has gradually become the mainstream and is in the stage of vigorous promotion.Taking the Gannan old revolutionary base area in Jiangxi Province as an example,this study puts forward"1+4+X"community-based elderly care model based on the policy system of community-based elderly care,the physical and mental health of the elderly,the material space and the construction of evaluation system,and explores how to promote the application of this community model efficiently in the form of industrialization,so as to drive the economic growth of the Gannan old revolutionary base area,promote the employment development and improve the community-based elderly care service. 展开更多
关键词 Community-based elderly care New elderly care model Gannan old revolutionary base area
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Effects of Health Education with Problem-Based Learning Approaches on the Knowledge, Attitude, Practice and Coping Skills of Women with High-Risk Pregnancies in Plateau Areas
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作者 Ying Wu Suolang Sezhen +5 位作者 Renqing Yuzhen Hong Wei Zhijuan Zhan Baima Hongying Yuhong Zhang Lihong Liu 《Open Journal of Nursing》 2024年第5期192-199,共8页
Objective: Given the unique cultural background, way of life, and physical environment of the Tibetan Plateau, this study aims to investigate the effects of health education using problem-based learning (PBL) approach... Objective: Given the unique cultural background, way of life, and physical environment of the Tibetan Plateau, this study aims to investigate the effects of health education using problem-based learning (PBL) approaches on the knowledge, attitude, practice, and coping skills of women with high-risk pregnancies in this region. Methods: 76 high-risk pregnancy cases were enrolled at Tibet’s Linzhi People’s Hospital between September 2023 and April 2024. 30 patients admitted between September 2023 and December 2023 were selected as the control group and were performed with regular patient education. 46 patients admitted between January 2024 and April 2024 were selected as the observation group and were performed regular patient education with problem-based learning approaches. Two groups’ performance on their health knowledge, attitude, practice and coping skills before and after interventions were evaluated, and patient satisfaction were measured at the end of the study. Results: There was no statistical significance (P P P Conclusions: Health education with problem-based learning approaches is worth promoting as it can help high-risk pregnant women in plateau areas develop better health knowledge, attitude and practice and healthier coping skills. Also, it can improve patient sanctification. 展开更多
关键词 Plateau areas Patients with High-Risk Pregnancies Problem-based Learning Health Education Health Knowledge Attitude and Practice Coping Skills
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Discussion on Theme-based Design of Road Landscape in Scenic Area——A Case Study of Five Dragon Temple Cultural Park in Yingcheng City
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作者 李忠博 李江风 《Journal of Landscape Research》 2011年第2期22-24,共3页
The combination of ornamental function and recreational function should be taken into account in road landscape design of scenic area.The theme characteristic should be highlighted by designing techniques.Roads in sce... The combination of ornamental function and recreational function should be taken into account in road landscape design of scenic area.The theme characteristic should be highlighted by designing techniques.Roads in scenic area should be used to lead tourists' behavior according to people's behavioral psychology.With Five Dragon Temple Cultural Park as case study,starting from its geographic location and establishment concept,the paper had extracted design theme of Five Dragon Temple Cultural Park.Profound religious cultural connotation had been given to the cultural park with Chinese traditional religion and "Five Elements" theory as the inspiration.It designed five main roads with different colors which represented five elements covering "gold,wood,water,fire and earth".Different scenic areas had been linked together by five man roads,forming a road landscape pattern of "meeting of five dragons".Then,flowering plants had been collocated along the five roads which were Vatica astrotricha,Punica granatum,Prunus serrulata,Morus alba and Osmanthus fragrans,creating theme-based road landscape not only representing religious significance but also corresponding with "Five Elements" theory. 展开更多
关键词 Landscape based on THEME Road in SCENIC area Integration of ORNAMENTAL and RECREATIONAL function Tour route
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An Experimental Study of Network-based Language Learning in Less-developed Areas
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作者 王正华 《海外英语》 2012年第12X期7-9,共3页
The advent of the Age of Information brings about bright prospects to Network-based Language Learning(NBLL).The thesis adopts the Engagement Theory as guided principles.The purpose is to use the novel NBLL model effec... The advent of the Age of Information brings about bright prospects to Network-based Language Learning(NBLL).The thesis adopts the Engagement Theory as guided principles.The purpose is to use the novel NBLL model effectively with the help of modern technology especially in less-developed areas.This thesis focuses on network-based experimental study.The research shows that the students under NBLL environment have cultivated the capabilities in information collection,computer operation,and information evaluation,as well as the abilities in problem solving,reasoning with criticism,and cooperating with others. 展开更多
关键词 the ENGAGEMENT theory NETWORK-baseD LANGUAGE LEARN
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New Insights into the Depositional Environments of Ordovician Carbonate Formations in the Yubei Area of Tarim Basin Based on Standard Microfacies Types 被引量:5
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作者 HUANG Chenjun LIU Geyun +3 位作者 MA Yongsheng LIU Bo LIU Hongguang SHI Kaibo 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2017年第2期755-756,共2页
Objective The Yubei area is located in the mid-east Maigaiti slope of southwestern Tarim Basin, China, with an exploration history of several years. Recent exploration has preliminarily indicated that the Ordovician ... Objective The Yubei area is located in the mid-east Maigaiti slope of southwestern Tarim Basin, China, with an exploration history of several years. Recent exploration has preliminarily indicated that the Ordovician carbonate formations in this area have some oil and gas potential. Carbonate microfacies provides material basis for reservoir development, seal formation and hydrocarbon generation. Therefore, this work utilized the standard microfacies (SMF) types to study the microfacies of the Ordovician formations in the Yubei area in order to provide theoretical basis for the next exploration. 展开更多
关键词 In New Insights into the Depositional Environments of Ordovician Carbonate Formations in the Yubei area of Tarim Basin based on Standard Microfacies Types
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The Source of Groundwater Recharge Based on Entropy Theory in the Arid Areas of North China 被引量:1
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作者 CHEN Jiansheng XU Yi 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第1期390-391,共2页
Objective Any natural system is constantly exchanging material, energy and information with the environment, and all tkese processes follow the basic law of thermodynamics, with no exception of groundwater recharge a... Objective Any natural system is constantly exchanging material, energy and information with the environment, and all tkese processes follow the basic law of thermodynamics, with no exception of groundwater recharge and discharge process. On the basis of the principle of the first law of thermodynamics, the reverse geochemical simulation method is widely used in the study of groundwater recharge, runoff and drainage process. However, some studies only consider the material conservation in theprocess, but ignore the probability of the transformation. 展开更多
关键词 The Source of Groundwater Recharge based on Entropy Theory in the Arid areas of North China
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Reliability Analysis of Controller Area Network Based Systems—A Review 被引量:2
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作者 Gerardine Immaculate Mary Zachariah C. Alex Lawrence Jenkins 《International Journal of Communications, Network and System Sciences》 2013年第4期155-166,共12页
This paper reviews the research work done on the Reliability Analysis of Controller Area Network (CAN) based systems. During the last couple of decades, real-time researchers have extended schedulability analysis to a... This paper reviews the research work done on the Reliability Analysis of Controller Area Network (CAN) based systems. During the last couple of decades, real-time researchers have extended schedulability analysis to a mature technique which for nontrivial systems can be used to determine whether a set of tasks executing on a single CPU or in a distributed system will meet their deadlines or not [1-3]. The main focus of the real-time research community is on hard real-time systems, and the essence of analyzing such systems is to investigate if deadlines are met in a worst case scenario. Whether this worst case actually will occur during execution, or if it is likely to occur, is not normally considered. Reliability modeling, on the other hand, involves study of fault models, characterization of distribution functions of faults and development of methods and tools for composing these distributions and models in estimating an overall reliability figure for the system [4]. This paper presents the research work done on reliability analysis developed with a focus on Controller-Area-Network-based automotive systems. 展开更多
关键词 Reliability Analysis of CONTROLLER area Network baseD SYSTEMS FAULT-TOLERANT CAN baseD SYSTEMS
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Solving Multi-Area Environmental/Economic Dispatch by Pareto-Based Chemical-Reaction Optimization Algorithm 被引量:6
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作者 Junqing Li Quanke Pan +2 位作者 Peiyong Duan Hongyan Sang Kaizhou Gao 《IEEE/CAA Journal of Automatica Sinica》 EI CSCD 2019年第5期1240-1250,共11页
In this study, we present a Pareto-based chemicalreaction optimization(PCRO) algorithm for solving the multiarea environmental/economic dispatch optimization problems.Two objectives are minimized simultaneously, i.e.,... In this study, we present a Pareto-based chemicalreaction optimization(PCRO) algorithm for solving the multiarea environmental/economic dispatch optimization problems.Two objectives are minimized simultaneously, i.e., total fuel cost and emission. In the proposed algorithm, each solution is represented by a chemical molecule. A novel encoding mechanism for solving the multi-area environmental/economic dispatch optimization problems is designed to dynamically enhance the performance of the proposed algorithm. Then, an ensemble of effective neighborhood approaches is developed, and a selfadaptive neighborhood structure selection mechanism is also embedded in PCRO to increase the search ability while maintaining population diversity. In addition, a grid-based crowding distance strategy is introduced, which can obviously enable the algorithm to easily converge near the Pareto front. Furthermore,a kinetic-energy-based search procedure is developed to enhance the global search ability. Finally, the proposed algorithm is tested on sets of the instances that are generated based on realistic production. Through the analysis of experimental results, the highly effective performance of the proposed PCRO algorithm is favorably compared with several algorithms, with regards to both solution quality and diversity. 展开更多
关键词 Chemical-reaction OPTIMIZATION algorithm gridbased CROWDING distance multi-area environmental/economic DISPATCH (MAEED) problem multi-objective OPTIMIZATION
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Effects of Specific Surface Area and Impurities of Reactive Alumina on Properties of Corundum Based Castables 被引量:1
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作者 ZHANG Ju ZHOU Yunpeng +5 位作者 LONG Bin ZHANG Lanyin LIU Jinxue Andreas BUHR JIA Quanli YE Guotian 《China's Refractories》 CAS 2017年第4期37-43,共7页
Effects of specific surface area and tiny amount of impurities of reactive alumina on the workability, sinte- ring and high temperature mechanical strength of corun- dum based castables were investigated. The results ... Effects of specific surface area and tiny amount of impurities of reactive alumina on the workability, sinte- ring and high temperature mechanical strength of corun- dum based castables were investigated. The results show that the presence of reactive alumina with high specific surface area leads to accelerating of the hydration of calcium aluminate cement, thus shortening the working time and setting time of the castables, which can be as- cribed that the critical energy barrier for stable nuclei of hydration products of cement can be reduced by the high specific surface area of reactive alumina. The sintering of the corundum based castables can be accelerated by the reactive alumina with high specific surface area and high amount of impurities, however, the reactive alumina with too high specific surface area and impurities can al- so lead to noticeable shrinkage of castables. In addition, high temperature mechanical strength of corundum based castables can be decreased by the higher amount of trace impurities of reactive alumina due to formation of low- melting phase at high temperatures. 展开更多
关键词 reactive alumina specific surface area impurity corundum based eastables WORKABILITY sintering
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Simulation of Old Urban Residential Area Evolution Based on Complex Adaptive System
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作者 杨帆 王晓鸣 华虹 《Journal of Southwest Jiaotong University(English Edition)》 2009年第1期27-35,共9页
On the basis of complex adaptive system theory, this paper proposed an agent-based model of old urban residential area, in which, residents and providers are the two adaptive agents. The behaviors of residents and pro... On the basis of complex adaptive system theory, this paper proposed an agent-based model of old urban residential area, in which, residents and providers are the two adaptive agents. The behaviors of residents and providers in this model are trained with back propagation and simulated with Swarm software based on environment-rules-agents interaction. This model simulates the evolution of old urban residential area and analyzes the relations between the evolution and urban management with the background of Chaozhou city. As a result, the following are obtained : ( 1 ) Simulation without government intervention indicates the trend of housing ageing, environmental deterioration, economic depression, and social filtering-down in old urban residential area. If the development of old urban residential area is under control of developers in market, whose desire is profit maximization, and factors such as social justice, historic and culture value will be ignored. (2) If the government carries out some policies and measures which will perfectly serve their original aims, simulation reveals that old urban residential area could be adapted to environment and keep sustainable development. This conclusion emphasizes that government must act as initiator and program maker for guiding residents and other providers directly in the development of old urban residential area. 展开更多
关键词 Old urban residential area (OURA) EVOLUTION Agent-based model SIMULATION SWARM
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Ecosystem-Based and Community-Based Model Integration to Designate Coral Reef No-Take Marine Protected Areas: A Case Study from Puerto Rico
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作者 Edwin A. Hernández-Delgado Manoj Shivlani Alberto M. Sabat 《Natural Resources》 2014年第10期538-560,共23页
Ecosystem-based management and community-based participation in governance of Marine Protected Areas (MPAs) have been identified as key elements to improve management success, local stakeholder support, and compliance... Ecosystem-based management and community-based participation in governance of Marine Protected Areas (MPAs) have been identified as key elements to improve management success, local stakeholder support, and compliance with regulations. However, both are often rarely achieved, resulting in poor MPA governance, support and success. A quantitative assessment of the spatio- temporal change (1997-2012) of coral reef fish communities within Arrecifes La Cordillera Natural Reserve in northeastern Puerto Rico was carried out. We also identified community expectations of and support for the designation of a network of small no-take MPAs within the reserve’s boundaries. A holistic approach employing biophysical and socioeconomic methods was used as part of a participatory model to identify priorities for the designation of candidate no-take MPAs. Populations of the most important fishery-targeted species showed a significant temporal decline, particularly in areas subjected to intense recreational activities and spearfishing. Most groupers (Serranidae), snappers (Lutjanidae), barracudas (Sphyraenidae), and some parrotfishes (Scaridae) were nearly absent at most sites. Most individuals belonged to smaller size categories. Herbivores represented the majority of the total fish biomass, suggesting strong fishing impacts on apex predators. Fish declines also occurred after two massive coral bleaching events in 1998 and 2005 that were followed by mass coral mortalities, suggesting combined negative impacts of fishing and climate change. A no-take MPA designation was supported by 80% of the artisanal fishermen, 73% of the concessionaires (i.e., SCUBA diving, charter boats), and 52% of registered vessel operators. Stakeholders agreed that coral reef conditions in the reserve had declined over time, as well as water quality which affected reef health and fisheries. Stakeholders did not recognize climate change and sea surface warming as threats to coral reefs and fisheries. Nonetheless, stakeholder perceptions of candidate no-take MPA sites remarkably matched those identified through fish counts. This study also highlighted the pervasive views held by many stake-holders concerning MPA management and enforcement, and recommended that any no-take MPA designation process considers improving stakeholder participation, understanding of management objectives, actions, and accomplishments, and building stakeholders trust. The integration of ecosystem-based and community-based participatory models may be critical to foster improved support of no-take MPAs and foster a long-term community-based integration to develop and implement mitigation strategies for climate change impacts in novel future scenarios. 展开更多
关键词 CLIMATE Change COMMUNITY-baseD Management FISH COMMUNITIES Marine Protected areas
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我国基层医生社区康复服务能力现状与对策研究
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作者 练璐 王敌 +1 位作者 陈家应 刘武 《中国全科医学》 CAS 北大核心 2025年第4期450-456,共7页
背景“康复回社区”是形成合理就医格局的重点要求,也是实现人人享有康复服务的重要策略,但目前我国基层医生的社区康复服务能力与居民日益增长的康复需求仍有差距。目的了解我国基层医生社区康复服务能力的现状、特点与不足,为制定能... 背景“康复回社区”是形成合理就医格局的重点要求,也是实现人人享有康复服务的重要策略,但目前我国基层医生的社区康复服务能力与居民日益增长的康复需求仍有差距。目的了解我国基层医生社区康复服务能力的现状、特点与不足,为制定能力提升对策提供科学依据。方法2020年8月采用多阶段分层抽样与典型抽样相结合的方法对中国江苏省、安徽省、河南省、重庆市、甘肃省五地基层医疗卫生机构的医生开展问卷调查,从康复功能评定、康复医疗服务、中医药保健指导、中医理疗四个方面调查基层医生社区康复服务能力现状。结果共回收8374份问卷,接受调查的基层医生中,分别有4697名(56.1%)、6396名(76.4%)、5833名(69.7%)、4834名(57.7%)具备康复功能评定、康复医疗服务、中医药保健指导、中医理疗能力,且农村地区基层医生各项社区康复能力及综合能力具备率均高于城市地区(P<0.05)。不同年龄、学历、执业资格、岗位基层医生的康复医疗服务指导、中医药保健指导、中医理疗能力具备率比较,差异有统计学意义(P<0.05);组内两两比较结果显示,在年龄方面,30岁以下及60岁以上基层医生康复功能评定能力的具备率高于30~<45岁、45~<60岁(P<0.016),45~<60岁医生具备率高于30~<45岁(P<0.016),45岁以下的康复医疗服务指导能力具备率低于45岁以上的基层医生(P<0.016);30岁以下基层医生中医药保健指导、中医理疗能力具备率低于30~<45岁、45~<60岁和60岁以上(P<0.016),30~<45岁医生能力具备率低于45~<60岁和60岁以上(P<0.016),45~<60岁医生具备率低于60岁以上(P<0.016)。在学历方面,高中/中专及以下学历基层医生能力具备率高于大专学历和本科学历(P<0.016),大专学历医生能力具备率高于本科学历(P<0.016)。在执业资格方面,全科医师具备率高于乡村医师和执业(助理)医师(P<0.016),乡村医师具备率高于执业(助理)医师(P<0.016)。在工作岗位方面,中医岗位基层医生中医药保健指导、中医理疗能力具备率高于临床岗位和其他岗位(P<0.016),临床岗位具备率高于其他岗位(P<0.016)。基层医生康复医疗综合能力具备率高于中医康复综合能力(P<0.05)。结论基层医生社区康复服务能力总体不足,中医康复能力较为薄弱。应完善分级康复服务体系建设,促进基层医生康复经验的积累和能力的提升,加强基层医生中医康复与西医现代康复技术联合培养,完善基层康复人才队伍建设,使其能承担起社区康复的责任。 展开更多
关键词 初级卫生保健 基层医生 社区康复 分层分析 城乡地区
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Study on Planning and Design Mode of Eco-agricultural Demonstration Base in Poyang Lake Eco-economic Zone 被引量:2
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作者 魏朝俊 徐芳 《Journal of Landscape Research》 2012年第6期24-26,共3页
Guided by the Planning of Poyang Lake Eco-economic Zone, traffic and geographic conditions of the Eco-agricultural Demonstration Base in the study area were analyzed, and design principles proposed as "adaptation... Guided by the Planning of Poyang Lake Eco-economic Zone, traffic and geographic conditions of the Eco-agricultural Demonstration Base in the study area were analyzed, and design principles proposed as "adaptation to local conditions, scientific planning, benign circulation and sustainable development". Detailed planning and design was interpreted from the perspectives of infrastructure planning and functional area planning. Specifically, infrastructure construction should focus on traffic design, water, power and gas supply design, and also architectural design; while functional areas should be gradually developed from south section to central and then north section. It was to establish a design and planning mode that can be widely applied. 展开更多
关键词 PLANNING of Poyang Lake Eco-economic Zone PLANNING and design of eco-agricultural base PLANNING of functional area Widely-applicable MODE
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The Rural Information-based Construction under the Perspective of Expanding Agricultural Industrial Chain 被引量:3
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作者 ZHU Li1, ZHU Jing2 1.Guiyang Municipal Party School of Communist Party of China, Guiyang 550004, China 2.Department of Information Management and Information System, College of Business, Hubei University, Wuhan 430062, China 《Asian Agricultural Research》 2012年第1期49-53,57,共6页
On the basis of expounding connotation and significance of expansion of agricultural industrial chain, coupled with the connotation of rural informatization connotation, this article analyses the role of rural informa... On the basis of expounding connotation and significance of expansion of agricultural industrial chain, coupled with the connotation of rural informatization connotation, this article analyses the role of rural informatization in expanding agricultural industrial chain: it can enhance market competitiveness of industry chain, improve the operational efficiency of industry chain, and promote the income and quality of farmers in industry chain. Under the perspective of expanding agricultural industrial chain, this article puts forwards thinking about the construction of rural informatization as follows: first, give full play to the leading role of the government; second, strengthen the construction of information-based network facility; third, integrate information resources in rural areas, and improve the quality of information; fourth, build comprehensive information service platform in rural areas; fifth, improve organizational level of production and management of individual farmers; sixth, strengthen the construction of information-based personnel in rural areas; seventh, strengthen publicity and training, promote overall cultural quality and information awareness of farmers. 展开更多
关键词 EXPANSION of AGRICULTURAL INDUSTRIAL CHAIN RURAL a
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Perspectives on protected area and wildfire management in the Black Sea region 被引量:1
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作者 George N.Zaimes Petros A.Tsioras +5 位作者 Chrysovalantis Kiosses Mustafa Tufekcioglu Sergiy Zibtsev Ilya Trombitsky Razvan Uratu Luiza Gevorgyan 《Journal of Forestry Research》 SCIE CAS CSCD 2020年第1期257-268,共12页
Protected areas are necessary for the conservation and enhancement of biodiversity.Wildfires are major threats to forests and other natural areas,because they may cause irreversible damages.The aim of this study was t... Protected areas are necessary for the conservation and enhancement of biodiversity.Wildfires are major threats to forests and other natural areas,because they may cause irreversible damages.The aim of this study was to analyze the perspective of experts(N=284),from six countries of the Black Sea,on the current status and problems of protected areas and wildfires.Understanding their points of view could enhance future management on these issues in the region.Data collection was carried out for 9 months,using a web-based questionnaire.Wildfires were perceived as a serious problem in Turkey,Armenia and Greece but as a substantially less serious problem in Romania,Ukraine and Moldova.In Greece,Armenia,and especially Ukraine,the current designated protected areas are considered sufficient to maintain biodiversity,while in Romania,Turkey,and especially Moldova,more areas should be designated as protected.A major need in all countries(except for Turkey)is the increased use of information and communication technologies for both wildfire suppression and protected area management.Experts were divided on whether wildfire suppression and management of protected areas are interconnected.However,there is growing awareness of the adverse impacts of climate change in protected areas and the frequency of wildfires in the future.The most frequently suggested measures to alleviate these impacts were:changes in forest management and increasing public awareness for wildfire suppression,along with changes in forest management and increased staff training to enhance protected area conservation. 展开更多
关键词 Climate change Experts Forested areas Web-based questionnaires
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An Intelligent Early Warning Method of Press-Assembly Quality Based on Outlier Data Detection and Linear Regression
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作者 XUE Shanliang LI Chen 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2020年第4期597-606,共10页
Focusing on controlling the press-assembly quality of high-precision servo mechanism,an intelligent early warning method based on outlier data detection and linear regression is proposed.Linear regression is used to d... Focusing on controlling the press-assembly quality of high-precision servo mechanism,an intelligent early warning method based on outlier data detection and linear regression is proposed.Linear regression is used to deal with the relationship between assembly quality and press-assembly process,then the mathematical model of displacement-force in press-assembly process is established and a qualified press-assembly force range is defined for assembly quality control.To preprocess the raw dataset of displacement-force in the press-assembly process,an improved local outlier factor based on area density and P weight(LAOPW)is designed to eliminate the outliers which will result in inaccuracy of the mathematical model.A weighted distance based on information entropy is used to measure distance,and the reachable distance is replaced with P weight.Experiments show that the detection efficiency of the algorithm is improved by 5.6 ms compared with the traditional local outlier factor(LOF)algorithm,and the detection accuracy is improved by about 2%compared with the local outlier factor based on area density(LAOF)algorithm.The application of LAOPW algorithm and the linear regression model shows that it can effectively carry out intelligent early warning of press-assembly quality of high precision servo mechanism. 展开更多
关键词 quality early warning outlier data detection linear regression local outlier factor based on area density and P weight(LAOPW) information entropy P weight
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Volume, Side-Area, and Force Direction of Berkovich and Cubecorner Indenters, Novel Important Insights 被引量:1
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作者 Gerd Kaupp 《Advances in Materials Physics and Chemistry》 2021年第11期212-241,共30页
The iteration-free physical description of pyramidal indentations with closed mathematical equations is comprehensively described and extended for creating new insights in this important field of research and app... The iteration-free physical description of pyramidal indentations with closed mathematical equations is comprehensively described and extended for creating new insights in this important field of research and applications. All calculations are easily repeatable and should be programmed by instrument builders for even easier general use. Formulas for the volumes and side-areas of Berkovich and cubecorner as a function of depth are deduced and provided, as are the resulting forces and force directions. All of these allow for the detailed comparison of the different indenters on the mathematical reality. The pyramidal values differ remarkably from the ones of so-called “equivalent cones”. The worldwide use of such pseudo-cones is in severe error. The earlier claimed and used 3 times higher displaced volume with cube corner than with Berkovich is disproved. Both displace the same amount at the same applied force. The unprecedented mathematical results are experimentally confirmed for the physical indentation hardness and for the sharp-onset phase-transi</span></span><span style="white-space:normal;"><span style="font-family:"">- </span></span><span style="white-space:normal;"><span style="font-family:"">tions with calculated transition energy. The comparison of both indenters pro</span></span><span style="white-space:normal;"><span style="font-family:"">vides novel basic insights. Isotropic materials exhibit the same phase transition onset force, but the transition energy is larger with the cube corner, due to higher force and flatter force direction. This qualifies the cube</span></span><span style="white-space:normal;"><span style="font-family:""> </span></span><span style="white-space:normal;"><span style="font-family:"">corner for fracture toughness studies. Pile-up is not from the claimed “friction with the indenter”. Anisotropic materials with cleavage planes and channels undergo sliding along these</span></span><span style="white-space:normal;"><span style="font-family:""> under pressure</span></span><span style="white-space:normal;"><span style="font-family:"">, both to the surface and internally. Their volumes add to the depression volume. These volumes are essential for the exemplified pile-up management. Phase-transitions produce polymorph interfaces that are nucleation sites for cracks. Technical materials must be developed with onset forces higher than the highest thinkable stresses (at airliners, bridges</span></span><span style="white-space:normal;"><span style="font-family:"">,</span></span><span style="white-space:normal;"><span style="font-family:""> etc</span></span><span style="white-space:normal;"><span style="font-family:"">.</span></span><span style="white-space:normal;"><span style="font-family:"">). This requires urgent revision of ISO 14577-ASTM stan</span></span><span style="white-space:normal;"><span style="font-family:"">dards. 展开更多
关键词 Closed Mathematical Formulas Force Direction Indenter Volumes and Side-areas Iteration-less Calculations Equal base-area Cones PILE-UP Phase-Transition-Onset and -Energy
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On the potential to predetermine dominant tree species based on sparse-density airborne laser scanning data for improving subsequent predictions of species-specific timber volumes 被引量:1
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作者 Janne Raty Jari Vauhkonen +1 位作者 Matti Maltamo Timo Tokola 《Forest Ecosystems》 SCIE CSCD 2016年第2期95-111,共17页
Background: Tree species recognition is the main bottleneck in remote sensing based inventories aiming to produce an input for species-specific growth and yield models. We hypothesized that a stratification of the ta... Background: Tree species recognition is the main bottleneck in remote sensing based inventories aiming to produce an input for species-specific growth and yield models. We hypothesized that a stratification of the target data according to the dominant species could improve the subsequent predictions of species-specific attributes in particular in study areas strongly dominated by certain species. Methods: We tested this hypothesis and an operational potential to improve the predictions of timber volumes, stratified to Scots pine, Norway spruce and deciduous trees, in a conifer forest dominated by the pine species. We derived predictor features from airborne laser scanning (ALS) data and used Most Similar Neighbor (MSN) and Seemingly Unrelated Regression (SUR) as examples of non-parametric and parametric prediction methods, respectively Results: The relationships between the ALS features and the volumes of the aforementioned species were considerably different depending on the dominant species. Incorporating the observed dominant species inthe predictions improved the root mean squared errors by 13.3-16.4 % and 12.6-28.9 % based on MSN and SUR, respectively, depending on the species. Predicting the dominant species based on a linear discriminant analysis had an overall accuracy of only 76 % at best, which degraded the accuracies of the predicted volumes. Consequently, the predictions that did not consider the dominant species were more accurate than those refined with the predicted species. The MSN method gave slightly better results than models fitted with SUR. Conclusions: According to our results, incorporating information on the dominant species has a clear potential to improve the subsequent predictions of species-specific forest attributes. Determining the dominant species based solely on ALS data is deemed challenging, but important in particular in areas where the species composition is otherwise seemingly homogeneous except being dominated by certain species. 展开更多
关键词 Forest inventory Light Detection and Ranging (LiDAR) area-based approach Nearest neighbor estimation Crown base height Intensity Volume model
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历史逻辑与时代视野:中国共产党人精神谱系中的具体精神论析——以老区精神为例 被引量:4
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作者 王炳林 张帆 《西南大学学报(社会科学版)》 CSSCI 北大核心 2024年第2期35-46,共12页
中国共产党人精神谱系研究中存在着整体精神研究与具体精神研究之间不够圆融的问题,立足于宏大叙事层面,选择节点性精神进行系统化研究,有助于打通具体精神同精神谱系整体研究之间的区隔。老区精神是中央宣传部公布的第一批伟大精神之一... 中国共产党人精神谱系研究中存在着整体精神研究与具体精神研究之间不够圆融的问题,立足于宏大叙事层面,选择节点性精神进行系统化研究,有助于打通具体精神同精神谱系整体研究之间的区隔。老区精神是中央宣传部公布的第一批伟大精神之一,其形成所属的空间范围广、时间跨度长,与中国革命道路的探索并行不悖,具有节点性精神的意义和价值。作为老区精神的生发地,革命老区具体指涉的是土地革命战争时期和抗日战争时期中国共产党领导创建的革命根据地以及解放战争时期的东北解放区。老区精神作为一种独立的伟大精神被列入中国共产党人精神谱系,旨在涵盖尚未凝练出革命精神的革命老区。老区精神区别于新民主主义革命时期革命老区具体革命精神,它们不是简单的整体与部分之间的关系,而是共性与个性的关系。老区精神的主要内容包括坚定信念跟党走、无私奉献顾大局、团结一心渡难关、艰苦奋斗换新天四个方面,它是新时代党的政治建设的生动教材、培育时代新人的红色资源,也是革命老区乡村振兴的内生动力。老区精神的研究启示我们立足大历史观审视历史个案,并以小见大,构建中国共产党人精神谱系研究的整体图景。 展开更多
关键词 中国共产党人精神谱系 具体精神 老区精神 革命老区 革命根据地
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