期刊文献+
共找到2,052篇文章
< 1 2 103 >
每页显示 20 50 100
EQUATOR Network Library for health research reporting
1
《Neural Regeneration Research》 SCIE CAS CSCD 2011年第31期2460-2480,共21页
Introduction EQUATOR Network provides unique access to collated expertise and resources for good reporting of health research, The resources are aimed at researchers (authors of research articles), journal editors, ... Introduction EQUATOR Network provides unique access to collated expertise and resources for good reporting of health research, The resources are aimed at researchers (authors of research articles), journal editors, peer reviewers, and developers of reporting guidelines, 展开更多
关键词 HTTP EQUATOR network Library for health research reporting WWW
下载PDF
MobiHealthcare System: Body Sensor Network Based M-Health System for Healthcare Application 被引量:2
2
作者 Fen Miao Xiuli Miao +1 位作者 Weihua Shangguan Ye Li 《E-Health Telecommunication Systems and Networks》 2012年第1期12-18,共7页
M-health, which is known as the practice of medical and public health supported by mobile devices such as mobile phones and PDAs for delivering medical and healthcare services, is currently being heavily developed to ... M-health, which is known as the practice of medical and public health supported by mobile devices such as mobile phones and PDAs for delivering medical and healthcare services, is currently being heavily developed to keep pace with the continuously rising demand for personalized healthcare. To this end, the MobiHealthcare system, which provides a personalized healthcare based on body sensor network, is developed. The system includes various body sensors to collect physiological signals specifically for different requirements, a cell phone to facilitate the joint processing of spatially and temporally collected medical data from different parts of the body for resource optimization and systematic health monitoring, a server cluster with great data storage capacity, powerful analysis capabilities to provide data storage, data mining and visualization. Compared with existing M-Health system, the MobiHealthcare system is characteristics of low coupling and powerful parallel computing capabilities. Various healthcare applications have been implemented in the proposed system to demonstrate its effectiveness in providing a powerful platform. 展开更多
关键词 M-health BODY SENSOR network DATA Analysis
下载PDF
The Impact of Network Alienation on the Mental Health of College Students
3
作者 宋朝程 《科技视界》 2014年第5期212-212,337,共2页
The Internet has become an important channel for college students to acquire knowledge and information.However,network has a negative effect on their healthy growth.The chord-network alienation arises,which is incoord... The Internet has become an important channel for college students to acquire knowledge and information.However,network has a negative effect on their healthy growth.The chord-network alienation arises,which is incoordinated with the rapid development of computer network technology.Based on the analysis of network alienation effect on college students’mental health,this paper put forward the corresponding solution countermeasures from three aspects. 展开更多
关键词 高校 英语 学习方法 互联网
下载PDF
Estimation of Battery State of Health Using Back Propagation Neural Network 被引量:1
4
作者 CHANG Cheng LIU Zheng-yu +2 位作者 HUANG Ye-wei WEI De-qi ZHANG Li 《Computer Aided Drafting,Design and Manufacturing》 2014年第1期60-63,共4页
100 pieces of 26650-type Lithium iron phosphate(LiFePO4) batteries cycled with a fixed charge and discharge rate are tested, and the influence of the battery internal resistance and the instantaneous voltage drop at... 100 pieces of 26650-type Lithium iron phosphate(LiFePO4) batteries cycled with a fixed charge and discharge rate are tested, and the influence of the battery internal resistance and the instantaneous voltage drop at the start of discharge on the state of health(SOH) is discussed. A back propagation(BP) neural network model using additional momentum is built up to estimate the state of health of Li-ion batteries. The additional 10 pieces are used to verify the feasibility of the proposed method. The results show that the neural network prediction model have a higher accuracy and can be embedded into battery management system(BMS) to estimate SOH of LiFePO4 Li-ion batteries. 展开更多
关键词 LiFePO4 battery state of health neural network prediction model
下载PDF
基于系统动力学的图书馆网络健康信息有效传播形成机理研究 被引量:1
5
作者 陈海波 杨晓雯 陈万超 《四川图书馆学报》 2024年第1期48-54,共7页
文章依据拉斯韦尔的5W模式和马莱兹克模式,探讨图书馆网络健康信息有效传播的基本要素和过程要素,使用系统动力学构建包含动力因、环境因、需求因、任务因、资源因和媒介因的图书馆网络健康信息有效传播形成机理模型,以期为图书馆网络... 文章依据拉斯韦尔的5W模式和马莱兹克模式,探讨图书馆网络健康信息有效传播的基本要素和过程要素,使用系统动力学构建包含动力因、环境因、需求因、任务因、资源因和媒介因的图书馆网络健康信息有效传播形成机理模型,以期为图书馆网络健康信息有效传播提供参考。 展开更多
关键词 图书馆 网络健康信息 有效传播 系统动力学 形成机理
下载PDF
Network Analysis of Road Traffic Crash and Rescue Operations in Federal Capital City
6
作者 Mamman Saba Jibril David Sesugh Aule +1 位作者 Badiatu Danladi Garba Taye Oluwafemi Adewuyi 《International Journal of Geosciences》 CAS 2023年第1期36-51,共16页
Abuja is witnessing an upsurge of victims from Road Traffic Crash (RTC) which is mostly due to the attendant rapid increase in the volume of vehicles, traffic jams, bad driving, over speeding, insufficient road signs ... Abuja is witnessing an upsurge of victims from Road Traffic Crash (RTC) which is mostly due to the attendant rapid increase in the volume of vehicles, traffic jams, bad driving, over speeding, insufficient road signs and bad conditions of vehicles that ply the roads. The problem is compounded by a lack of early emergency response. Geographic Information System (GIS) based travel time model was applied in the street network analysis to identify RTC black spots that are outside the close reach of Federal Road Safety Commission (FRSC) rescue points/health facilities in Federal Capital City (FCC). Five minutes, Ten minutes and Fifteen minutes travel times were used as the impedance factor. Remote Sensing and GIS techniques were used to carry out network analysis. This was achieved by conducting the closest facility operation in the ArcGIS network analyst extension using the time of travel from each FRSC zebra point location to the RTC black spot zones/health facility. The results were presented on road network maps and bar graphs. The areas where quick response and medical facilities are insufficient were identified. It was concluded that the available health centres can sufficiently service RTC black spots in FCC, but the FRSC zebra points are insufficient which renders rescue operations inefficient and thereby exposes RTC victims to more danger. In order to ensure that there is sufficient coverage for response times, it was suggested that additional zebra points be created. 展开更多
关键词 network Analysis health Facilities Zebra Points RTC GIS FCC Remote Sensing
下载PDF
Contributions of Social Networks to Health and Care Services in Myanmar’s Older Adult Population: 2012 Myanmar Aging Study
7
作者 Paul Kowal Min Nwe Tun +1 位作者 Sai Kham Leik Ilaria Rocco 《Health》 2021年第12期1530-1545,共16页
Background: Myanmar’s National Health Plan 2017-2021 set out concrete steps to strengthen the health system on the way to achieving the goal of universal health coverage by 2030. Ensuring these steps include the 7.7 ... Background: Myanmar’s National Health Plan 2017-2021 set out concrete steps to strengthen the health system on the way to achieving the goal of universal health coverage by 2030. Ensuring these steps include the 7.7 million older adults in Myanmar’s population by 2030 will require novel strategies that improve health and reduce financial burden of health expenditures. An examination of the relationship between social networks and selected health outcomes was undertaken to determine whether these networks can safeguard older adults’ continued contributions to family, society and their own health. Methods: Secondary analysis of a nationally representative study of adults aged 60 years and older. Ordered logistic regression analyses with weighted data were used to examine the relationship between a social network variable and a number of health outcomes. Findings: Stronger social networks were associated with better health outcomes like better memory (OR 1.2), lower reported walking difficulties (OR 0.58), better self-reported health (R 1.15). People with higher social ties were also more like to receive regular assistance and provide care for other household members. Interpretation: Social networks play a role in mediating health outcomes and interactions with the health care systems. Social network interventions should be explored as part of policy mechanisms to ensure universal health coverage for older adults in Myanmar. 展开更多
关键词 Myanmar Ageing health health Policy Social networks UHC UN SDGs
下载PDF
Evaluation of the Functionality of the Networking of Sexual and Reproductive Health Rights Services in the Event of Gender-Based Violence in the Commune of Kpomasse in 2022
8
作者 Patrick Makoutode Colette Azandjeme +2 位作者 Jolinda Capo-Chichi Jacques Saizonou Ghislain Sopoh 《Open Journal of Preventive Medicine》 CAS 2022年第12期271-280,共10页
Introduction: In developing countries, gender-based violence (GBV) is a real public health problem. In Benin, GBV affects the majority of women and girls (69%). Benin has implemented strategies and set up integrated c... Introduction: In developing countries, gender-based violence (GBV) is a real public health problem. In Benin, GBV affects the majority of women and girls (69%). Benin has implemented strategies and set up integrated centers for the management of violence in order to reduce cases of violence and ensure the holistic management of victims. The objective of our study was to assess the functionality of the network of sexual and reproductive health rights (SRHR) in case of GBV in the commune of Kpomasse in 2022. Method: This descriptive and evaluative study was conducted from March 21 to April 11, 2022. The sampling method used was non-probabilistic. Reasoned choice and convenience were the techniques used for the different targets of the study. The functionality of the SRHR service network was assessed first by calculating scores at the structure, process and outcome levels, and then by analysis using the human rights-based approach. Results: Out of the 34 GBV victims identified, only one had received a full response and 54% of the victims had no knowledge of SRHR. The lack of knowledge about health care facilities was 41% for victims and 80% for non-victims in the community who participated in the study. In the case of gender-based violence, the community preferred to settle out of court rather than report it. The functionality of the networking of sexual and reproductive health rights services in the event of the occurrence of gender-based violence in the commune of Kpomassè is insufficient. Lack of knowledge of the roles of rights holders (DD) and duty bearers (DO) explains the insufficient functionality of networking. Conclusion: Training of SRHR service agents and community sensitization are essential to improve the functionality of SRHR service networking in the commune of Kpomasse. 展开更多
关键词 EVALUATION Functionality Gender-Based Violence networkING SERVICES Sexual and Reproductive health Rights BENIN
下载PDF
基于BP神经网络的高桩码头基桩损伤识别研究 被引量:1
9
作者 郑永来 肖飞 +1 位作者 潘坦博 韩雨莘 《建筑技术》 2024年第3期371-376,共6页
针对高桩码头基桩的损伤识别问题,基于BP神经网络开展了损伤定位研究。传统损伤定位方法在识别过程中受到人为主观因素的干扰,且对于只有一阶模态数据的情况定位效果有限。为克服这些问题,构建了不受人为因素影响的损伤定位神经网络,以... 针对高桩码头基桩的损伤识别问题,基于BP神经网络开展了损伤定位研究。传统损伤定位方法在识别过程中受到人为主观因素的干扰,且对于只有一阶模态数据的情况定位效果有限。为克服这些问题,构建了不受人为因素影响的损伤定位神经网络,以第三类损伤指标ULSC和δFC作为训练样本,实现了对基桩局部损伤的准确定位。在建立合理的高桩码头有限元模型的基础上,构建了基于BP神经网络的损伤定位模型,并使用ABAQUS模拟数据和实测振动信号数据进行训练和测试。实验结果表明,该神经网络模型具有较高的定位准确性和鲁棒性,在不同损伤工况和10%噪声水平下仍表现优异。 展开更多
关键词 BP神经网络 损伤识别 基桩损伤 健康监测
下载PDF
基于并行图卷积网络的无砟轨道监测测点异常识别
10
作者 孙立 郏凯亮 +2 位作者 林超 黄永 李惠 《铁道学报》 EI CAS CSCD 北大核心 2024年第3期78-86,共9页
针对在服役过程中高速铁路无砟轨道结构健康监测可能出现由结构局部损伤或者传感器故障导致的测点异常问题,建立一种并行图卷积神经网络模型,来识别高速铁路无砟轨道监测测点的异常。采用结构早期初始状态的监测数据训练并行图卷积神经... 针对在服役过程中高速铁路无砟轨道结构健康监测可能出现由结构局部损伤或者传感器故障导致的测点异常问题,建立一种并行图卷积神经网络模型,来识别高速铁路无砟轨道监测测点的异常。采用结构早期初始状态的监测数据训练并行图卷积神经网络,获得结构初始状态下的测点数据之间的空间关联性;利用并行图卷积神经网络预测服役状态无砟轨道测点监测数据,实现轨道监测测点异常的识别;此外,对明显漂移的数据可基于有向图分析修正预测结果。将该方法应用于某高速铁路无砟轨道结构长期监测数据并识别了异常测点。 展开更多
关键词 图卷积神经网络 无砟轨道 结构健康监测 异常识别 状态评估
下载PDF
基于患者社会网络的健康教育对社区老年慢性病患者自我管理能力的影响研究
11
作者 刘宇 赵芳 +6 位作者 王丽 李彩宏 林可可 白小燕 吴诗诗 张瑞婷 王静 《中国全科医学》 CAS 北大核心 2024年第34期4295-4301,共7页
背景老年慢性病患者记忆力与生活自理能力逐渐下降,仅依靠其个人力量进行疾病的自我管理难以达到良好效果,需要更多来自他人的帮助。在对老年慢性病患者进行健康教育时不能仅单独面向老年人,更需要充分利用患者的社会网络,让其社会网络... 背景老年慢性病患者记忆力与生活自理能力逐渐下降,仅依靠其个人力量进行疾病的自我管理难以达到良好效果,需要更多来自他人的帮助。在对老年慢性病患者进行健康教育时不能仅单独面向老年人,更需要充分利用患者的社会网络,让其社会网络成员参与到老年患者的疾病管理中,以更有效地提高患者的自我管理能力。目的探讨基于患者社会网络的健康教育对社区老年慢性病患者自我管理能力的影响。方法招募2021年3月—2022年6月在北京方庄社区卫生服务中心、清华长庚医院门诊、北京医院内分泌门诊就诊及红联村社区的老年慢性病患者,采用电脑生成的随机数字表,将患者按照招募入组的顺序各自进行编号,奇数为干预组,偶数为对照组,按照1∶1随机分为干预组和对照组,干预组给予老年患者+其社会网络成员健康教育,对照组给予患者健康教育,干预周期12个月;在干预前、干预第6个月、干预第12个月应用慢性病自我管理研究测量表(CDSMS)评估慢性病自我管理的效果,使用Lubben社会网络量表简表(LSNS-6)测评患者社会网络水平。结果80例患者入组,其中1例患者(对照组)因研究期间两次住院退出研究,最终79列患者完成研究:干预组患者40例+其社会网络成员40例,对照组39例。CDSMS自我管理行为分量表的运动锻炼维度、认知性症状管理维度及自我效能分量表的时间与分组存在交互作用(F交互分别为7.174、8.488、9.939,P<0.05);时间在CDSMS两个分量表上主效应显著(F时间分别是13.527、12.188、7.576、5.058,P<0.05);分组在CDSMS自我管理行为分量表的三个维度上主效应显著(F分组分别是12.324、7.383、5.927,P<0.05)。干预第6个月,干预组CDSMS运动锻炼维度得分高于对照组(t=2.852,P=0.006);干预第12个月,干预组CDSMS运动锻炼维度得分高于对照组(t=4.473,P<0.05)、认知性症状管理维度得分高于对照组(t=-2.780,P=0.005)、自我效能分量表得分高于对照组(t=2.993,P=0.004)。结论为期12个月的基于患者社会网络的健康教育,可改善老年慢性病患者的部分自我管理行为,提高自我效能水平。 展开更多
关键词 慢性病 老年人 健康教育 社会网络 自我管理
下载PDF
基于迁移学习与GRU神经网络结合的锂电池SOH估计
12
作者 莫易敏 余自豪 +2 位作者 叶鹏 范文健 林阳 《太阳能学报》 EI CAS CSCD 北大核心 2024年第3期233-239,共7页
为解决退役电池梯次利用过程中单体剩余使用寿命估计困难、测试流程复杂与能耗高等问题,提出迁移学习与GRU网络结合的锂离子电池健康状态估计方法;设计的基础模型结构为输入层+GRU层+全连接层+输出层;根据健康因子的得分,选择训练基础... 为解决退役电池梯次利用过程中单体剩余使用寿命估计困难、测试流程复杂与能耗高等问题,提出迁移学习与GRU网络结合的锂离子电池健康状态估计方法;设计的基础模型结构为输入层+GRU层+全连接层+输出层;根据健康因子的得分,选择训练基础模型的数据集、划分电池相似度等级并制定对应的迁移学习策略。实验结果表明:与其他模型相比,分别使用数据集的前40%与前25%训练得到的基础模型与迁移学习模型,两者的精度分别最大提高42.48%与95.28%,而预测稳定性分别最大提高55.38%与93.55%。 展开更多
关键词 机器学习 迁移学习 锂电池 门控循环单元神经网络 健康状态估计
下载PDF
On the Impact of Manufacturing Uncertainty in Structural Health Monitoring of Composite Structures: A Signal to Noise Weighted Neural Network Process
13
作者 Hessamodin Teimouri Abbas S. Milani +1 位作者 Rudolf Seethaler Amir Heidarzadeh 《Open Journal of Composite Materials》 2016年第1期28-39,共12页
This article investigates the potential impact of manufacturing uncertainty in composite structures here in the form of thickness variation in laminate plies, on the robustness of commonly used Artificial Neural Netwo... This article investigates the potential impact of manufacturing uncertainty in composite structures here in the form of thickness variation in laminate plies, on the robustness of commonly used Artificial Neural Networks (ANN) in Structural Health Monitoring (SHM). Namely, the robustness of an ANN SHM system is assessed through an airfoil case study based on the sensitivity of delamination location and size predictions, when the ANN is imposed to noisy input. In light of the observed poor performance of the original network, even when its architecture was carefully optimized, it had been proposed to weigh the input layer of the ANN by a set of signal-to-noise (SN) ratios and then trained the network. Both damage location and size predictions of the latter SHM approach were increased to above 90%. Practical aspects of the proposed robust SN-ANN SHM have also been discussed. 展开更多
关键词 Composite Structures Manufacturing Uncertainties Structural health Monitoring Artificial Neural networks Signal-to-Noise Weighting
下载PDF
Stand-Alone Patient Reception and Referral System with Health Data Management
14
作者 Ababacar Sadikh Faye Ousmane Sow +3 位作者 Mame Andallah Diop Jupiter Ndiaye Youssou Traore Oumar Diallo 《Engineering(科研)》 2023年第10期596-611,共16页
The COVID-19 pandemic has exposed vulnerabilities within our healthcare structures. Healthcare facilities are often faced with staff shortages and work overloads, which can have an impact on the collection of health d... The COVID-19 pandemic has exposed vulnerabilities within our healthcare structures. Healthcare facilities are often faced with staff shortages and work overloads, which can have an impact on the collection of health data and constants essential for early diagnosis. In order to minimize the risk of error and optimize data collection, we have developed a robot incorporating artificial intelligence. This robot has been designed to automate and collect health data and constants in a contactless way, while at the same time verifying the conditions for correct measurements, such as the absence of hats and shoes. Furthermore, this health information needs to be transmitted to services for processing. Thus, this article addresses the aspect of reception and collection of health data and constants through various modules: for taking height, temperature and weight, as well as the module for entering patient identification data. The article also deals with orientation, presenting a module for selecting the patient’s destination department. This data is then routed via a wireless network and an application integrated into the doctors’ tablets. This application will enable efficient queue management by classifying patients according to their order of arrival. The system’s infrastructure is easily deployable, taking advantage of the healthcare facility’s local wireless network, and includes encryption mechanisms to reinforce the security of data circulating over the network. In short, this innovative system will offer an autonomous, contactless method for collecting vital constants such as size, mass, and temperature. What’s more, it will facilitate the flow of data, including identification information, across a network, simplifying the implementation of this solution within healthcare facilities. 展开更多
关键词 Public health health Data Wireless network SECURITY Artificial Intelligence INSTRUMENTATION MECHATRONICS
下载PDF
从自然疗愈到社会修复——公共健康视角下社区花园的疗愈价值探索
15
作者 刘悦来 周安锌 《风景园林》 北大核心 2024年第5期103-115,共13页
【目的】以公共健康为视角深入探索社区花园的自然疗愈力量和社会修复过程。【方法】梳理社区花园及公共健康的研究进展,在社区花园促进自然疗愈理论与实践的研究基础上,以枢纽型社区花园、街道共同体实验、市域社区花园更新和全国范围... 【目的】以公共健康为视角深入探索社区花园的自然疗愈力量和社会修复过程。【方法】梳理社区花园及公共健康的研究进展,在社区花园促进自然疗愈理论与实践的研究基础上,以枢纽型社区花园、街道共同体实验、市域社区花园更新和全国范围的社区花园实践行动的4个项目为研究对象,探讨不同类型的社区花园从促进自然疗愈到推动社会修复这一过程的行动方式和作用机制,并以问卷调查的方法进行社区花园疗愈价值评估。【结果】表明社区花园对于个人治愈、群体疗愈、社会关系修复与重塑均有一定的促进作用,进而总结出实现社区花园疗愈价值的3层作用机制,即自然产出服务与物理空间营造、个体生理与心理疗愈价值实现、以社群网络搭建促进社会关系修复。【结论】社区花园可通过提供自然产出服务、促进参与者身心疗愈以及扩大化的社群网络带来的社会关系修复效益,为社区长期发展和可持续建设提供有效助力与支持。 展开更多
关键词 风景园林 社区花园 自然疗愈 公共健康 社群网络 社会修复
下载PDF
基于知识图谱多集池化的健康状态智能评估方法
16
作者 张元鸣 肖士易 +2 位作者 徐雪松 程振波 肖刚 《计算机集成制造系统》 EI CSCD 北大核心 2024年第3期893-905,共13页
为了从装备传感器监测数据和其他关联数据中提取更全面的时间域和空间域特征信息,提出一种基于知识图谱多集池化的健康状态评估方法。构建了带时间标签的健康知识图谱,以建模装备一段时间内监测数据、部件组成数据和先验知识间的时空依... 为了从装备传感器监测数据和其他关联数据中提取更全面的时间域和空间域特征信息,提出一种基于知识图谱多集池化的健康状态评估方法。构建了带时间标签的健康知识图谱,以建模装备一段时间内监测数据、部件组成数据和先验知识间的时空依赖关系。在此基础上,设计了图多集池化网络模型,该模型通过节点特征学习、第一级图池化、自注意力特征学习和第二级图池化能够生成图谱的整体向量表示,将健康状态评估转换为基于表示学习的图谱分类任务。在公开的发动机数据集上对所提方法进行了实验评价,结果表明,该方法能够获得较高的评估准确度,在小样本情况下也表现出良好的优势。 展开更多
关键词 健康状态评估 图神经网络 知识图谱 时空特征 图池化
下载PDF
微博甲流话题下公民健康信息行为主题及特征研究
17
作者 黄丽霞 康与豪 《情报探索》 2024年第9期1-10,共10页
[目的/意义]探究在突发公共卫生事件下公民健康信息行为的舆情周期主题演化历程及公民健康信息行为特征,并为相关情况的网络舆情提供有效合理的管控意见和决策支持。[方法/过程]依据生命周期理论并结合百度指数和微博话题的时序分布来... [目的/意义]探究在突发公共卫生事件下公民健康信息行为的舆情周期主题演化历程及公民健康信息行为特征,并为相关情况的网络舆情提供有效合理的管控意见和决策支持。[方法/过程]依据生命周期理论并结合百度指数和微博话题的时序分布来进行周期划分,通过LDA主题模型构建研究框架,探究不同阶段公民健康信息行为的舆情主题差异,阐述在甲流感染中公民的健康信息行为特征。[结果/结论]在甲流感染的不同阶段,公民在微博平台讨论的侧重点有所不同,通过分析得出在甲流感染中公民的健康信息行为具有时序性、易引导性、重实用性、分化性等特征。所构建的全过程分析框架为相关管理部门或机构提供了引导网络舆情的思路和建议。 展开更多
关键词 健康信息行为 LDA 主题演化 网络舆情 甲流 突发公共卫生事件
下载PDF
基于BP神经网络和遗传算法的设备故障诊断与健康管理模型研究
18
作者 和征 张同静 杨小红 《制造技术与机床》 北大核心 2024年第11期9-15,共7页
针对目前设备管理存在的故障处理周期长、维护保养任务重、维修成本高的现状,构建了设备故障诊断与健康管理架构,包括设备层、感知层、数据处理及存储层、数据分析层和应用层。其中,在数据分析层,综合采用BP神经网络和遗传算法,建立了... 针对目前设备管理存在的故障处理周期长、维护保养任务重、维修成本高的现状,构建了设备故障诊断与健康管理架构,包括设备层、感知层、数据处理及存储层、数据分析层和应用层。其中,在数据分析层,综合采用BP神经网络和遗传算法,建立了设备故障诊断与健康管理模型。最后,以机电设备振动数据为例,进行设备故障诊断模型的预测结果分析,验证了该模型的可行性。研究结果表明,该模型能提高设备故障诊断正确率,具有较好的故障诊断效果;设备预测健康状态与实际健康状态的变化趋势基本保持一致,重合率大于90%。该成果可为制造企业的设备故障诊断与健康管理提供相关策略,有效排除故障问题,降低管理成本。 展开更多
关键词 设备故障诊断 设备健康管理 BP神经网络 遗传算法
下载PDF
互联网医院平台对结核病患者就诊体验的影响因素分析 被引量:1
19
作者 周爽 宗迪 +1 位作者 李士雪 杜建 《中国防痨杂志》 CAS CSCD 北大核心 2024年第4期424-432,共9页
目的:调查在互联网医院平台就诊的结核病患者的就诊体验并分析其影响因素,为改善结核病患者对“互联网+”医疗服务的就诊体验、提升互联网医院平台的服务质量提供参考。方法:以随机数字表法抽取2022年1—5月在首都医科大学附属北京胸科... 目的:调查在互联网医院平台就诊的结核病患者的就诊体验并分析其影响因素,为改善结核病患者对“互联网+”医疗服务的就诊体验、提升互联网医院平台的服务质量提供参考。方法:以随机数字表法抽取2022年1—5月在首都医科大学附属北京胸科医院互联网医院平台线上就诊并且符合纳入标准的175例结核病患者进行电话调查,自主设计问卷完成患者基本情况、就诊情况、满意度等方面的数据收集,并采用“互联网+”患者就诊体验量表对患者体验进行评价,收回有效问卷150份,有效率为85.7%(150/175),分别采用t检验、方差分析和多元线性回归分析对患者就诊体验进行单因素和多因素分析。结果:患者就诊体验总体得分为(59.44±7.06)分,其中安全性维度得分最高[(4.41±0.62)分],获得性维度得分最低[(3.97±0.66)分]。单因素分析结果显示,患者的年龄(F=8.477,P<0.01)、居住地(F=3.285,P<0.05)、职业(F=3.158,P<0.01)对患者体验的差异具有统计学意义;就诊等待时间(t=-3.099,P<0.01)、问题咨询时间(t=3.725,P<0.01)、医生的专业度(F=4.887,P<0.01)对患者体验的差异具有统计学意义;患者对整体就诊(F=16.134,P<0.01)、就诊流程(F=21.862,P<0.01)、就医资源获取(F=24.165,P<0.01)、就诊医生(F=20.458,P<0.01)及医院整体(F=17.176,P<0.01)的满意度对患者体验的差异均具有统计学意义。在多元线性回归分析中,相较于北京郊区,天津或河北等环京地区患者的就诊体验更好(t=2.386,P<0.05);相较于离退休人员,政府事业单位、公司职员、个体经营者、无业人员的就诊体验更好(t=2.585,P<0.05;t=2.626,P<0.05;t=2.839,P<0.01;t=2.424,P<0.05);就诊等待时间≥30 min、有足够的问题咨询时间、对就医资源获取便捷性和对就诊医生的满意度高的患者就诊体验更好(t=3.402,P<0.01;t=-2.775,P<0.01;t=2.329,P<0.05;t=2.064,P<0.05)。结论:结核病患者在互联网医院平台就诊的总体体验较好,影响患者就诊体验的主要因素有年龄、居住地、职业、就诊等待时间、问题咨询时间,以及对资源获取和看诊医生的满意度,对以上问题进行改善并加强对重点人群的关注,有助于提升互联网医院平台的就医体验和服务质量。 展开更多
关键词 结核 问卷调查 卫生服务 因素分析 统计学 计算机通信网络 病人满意度
下载PDF
高校大学生心理健康评价指标体系与仿真技术研究——基于神经网络优化算法
20
作者 戴钰 《科教文汇》 2024年第18期173-179,共7页
本文以促进大学生心理良性发展为导向,以大学生心理健康问题的诱因为切入点,确定大学生心理健康评价指标体系。从分类问题和回归问题角度出发,在分类问题中使用有监督分类学习器对大学生心理健康评价体系进行建模,在回归问题中使用神经... 本文以促进大学生心理良性发展为导向,以大学生心理健康问题的诱因为切入点,确定大学生心理健康评价指标体系。从分类问题和回归问题角度出发,在分类问题中使用有监督分类学习器对大学生心理健康评价体系进行建模,在回归问题中使用神经网络类学习器进行分析。使用SOM聚类算法验证大学生心理健康评价指标体系的稳健性,并基于神经网络学习器进行模型训练,针对最优权重以及阈值的选择问题使用遗传算法进行优化。 展开更多
关键词 大学生心理健康 神经网络优化算法 仿真模拟
下载PDF
上一页 1 2 103 下一页 到第
使用帮助 返回顶部