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Machine learning and neural network supported state of health simulation and forecasting model for lithium-ion

《能源前沿(英文)》 doi: 10.1007/s11708-023-0891-7

摘要: As the intersection of disciplines deepens, the field of battery modeling is increasingly employing various artificial intelligence (AI) approaches to improve the efficiency of battery management and enhance the stability and reliability of battery operation. This paper reviews the value of AI methods in lithium-ion battery health management and in particular analyses the application of machine learning (ML), one of the many branches of AI, to lithium-ion battery state of health (SOH), focusing on the advantages and strengths of neural network (NN) methods in ML for lithium-ion battery SOH simulation and prediction. NN is one of the important branches of ML, in which the application of NNs such as backpropagation NN, convolutional NN, and long short-term memory NN in SOH estimation of lithium-ion batteries has received wide attention. Reports so far have shown that the utilization of NN to model the SOH of lithium-ion batteries has the advantages of high efficiency, low energy consumption, high robustness, and scalable models. In the future, NN can make a greater contribution to lithium-ion battery management by, first, utilizing more field data to play a more practical role in health feature screening and model building, and second, by enhancing the intelligent screening and combination of battery parameters to characterize the actual lithium-ion battery SOH to a greater extent. The in-depth application of NN in lithium-ion battery SOH will certainly further enhance the science, reliability, stability, and robustness of lithium-ion battery management.

关键词: machine learning     lithium-ion battery     state of health     neural network     artificial intelligence    

结构健康监测数据科学与工程研究进展 Article

鲍跃全, 陈智成, 魏世银, 徐阳, 唐志一, 李惠

《工程(英文)》 2019年 第5卷 第2期   页码 234-242 doi: 10.1016/j.eng.2018.11.027

摘要:

结构健康监测(SHM)是一个多学科交叉领域,涉及利用大量传感器和仪器对结构荷载和响应进行自动感知,然后根据收集到的数据对结构进行健康诊断。由于安装在结构上的 SHM 系统能自动实时地感知、评估和预警结构状态,所以海量数据是 SHM 的一个显著特征。与海量数据处理与分析相关的方法与技术被称为数据科学与工程,其包括数据采集、数据转换、数据管理以及数据处理与挖掘算法。本文旨在简要回顾笔者在 SHM 数据科学与工程方面开展的最新研究,具体涵盖基于压缩采样的数据采集算法、基于深度学习算法的异常数据诊断方法、基于计算机视觉技术的桥梁裂纹识别方法,以及基于机器学习算法的桥梁结构状态评估方法。最后,本文在结语部分对该领域的未来发展趋势进行了展望。

关键词: 结构健康监测     监测数据     压缩采样     机器学习     深度学习    

An adaptive data-driven method for accurate prediction of remaining useful life of rolling bearings

Yanfeng PENG, Junsheng CHENG, Yanfei LIU, Xuejun LI, Zhihua PENG

《机械工程前沿(英文)》 2018年 第13卷 第2期   页码 301-310 doi: 10.1007/s11465-017-0449-7

摘要:

A novel data-driven method based on Gaussian mixture model (GMM) and distance evaluation technique (DET) is proposed to predict the remaining useful life (RUL) of rolling bearings. The data sets are clustered by GMM to divide all data sets into several health states adaptively and reasonably. The number of clusters is determined by the minimum description length principle. Thus, either the health state of the data sets or the number of the states is obtained automatically. Meanwhile, the abnormal data sets can be recognized during the clustering process and removed from the training data sets. After obtaining the health states, appropriate features are selected by DET for increasing the classification and prediction accuracy. In the prediction process, each vibration signal is decomposed into several components by empirical mode decomposition. Some common statistical parameters of the components are calculated first and then the features are clustered using GMM to divide the data sets into several health states and remove the abnormal data sets. Thereafter, appropriate statistical parameters of the generated components are selected using DET. Finally, least squares support vector machine is utilized to predict the RUL of rolling bearings. Experimental results indicate that the proposed method reliably predicts the RUL of rolling bearings.

关键词: Gaussian mixture model     distance evaluation technique     health state     remaining useful life     rolling bearing    

Primary health care for all by 2020: The systematic reform of the medical and health system in China

《医学前沿(英文)》 2010年 第4卷 第1期   页码 3-7 doi: 10.1007/s11684-010-0024-7

The next step of community health construction: Training general practitioners and implementing health

Kan ZHANG MM, Wei DONG MM, Ying-Yao CHEN MD,

《医学前沿(英文)》 2010年 第4卷 第2期   页码 134-138 doi: 10.1007/s11684-010-0041-6

摘要: This article discusses the concept of health management and stresses that community health management should be the starting point of community health service, necessitating a paradigm shift from observing the treatment-oriented medical model to observing the prevention-and-health management-based medical model. Community health construction has entered a new phase, one which highlights the need to train general practitioners in practice-based life cycle health management. In addition, general practitioners should assume the mission of implementing community health management.

关键词: community health     general practitioners     health management    

基于RTK GPS系统的结构安全监测系统研究

王人鹏,姚连璧,孟晓林

《中国工程科学》 2011年 第13卷 第3期   页码 63-70

摘要:

利用GPS系统在线监测获取的大量结构响应数据,完成了大量数据处理工作,得到了结构响应的时间序列。在此基础上,完成了结构响应的谱分析,初步建立了结构响应的状态空间模型及ARMA(autoregressive moving average method)模型。计算分析结果与大桥通车试验的实测结果及有限元模型预测结果相当吻合。研究表明,基于结构响应的状态空间模型及ARMA模型是评估结构动力性能的有力工具,同时进一步验证了通过RTK GPS系统建立结构安全监测系统的可能性。

关键词: RTK GPS系统     时间序列     状态空间模型     ARMA模型     有限元模型    

Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

《环境科学与工程前沿(英文)》 2022年 第16卷 第4期 doi: 10.1007/s11783-021-1475-6

摘要:

• The concentrations of 13 heavy metals in Taihu Lake were analyzed.

关键词: Heavy metals     Human health ambient water quality criteria     Taihu Lake     Health risk assessment     Contribution rate    

Percolation-based health management of complex traffic systems

《工程管理前沿(英文)》 2021年 第8卷 第4期   页码 557-571 doi: 10.1007/s42524-021-0174-0

摘要: System health management, which aims to ensure the safe and efficient operation of systems by reducing uncertain risks and cascading failures during their lifetime, is proposed for complex transportation systems and other critical infrastructures, especially under the background of the New Infrastructure Projects launched in China. Previous studies proposed numerous approaches to evaluate or improve traffic reliability or efficiency. Nevertheless, most existing studies neglected the core failure mechanism (i.e., spatio–temporal propagation of traffic congestion). In this article, we review existing studies on traffic reliability management and propose a health management framework covering the entire traffic congestion lifetime, from emergence, evolution to dissipation, based on the study of core failure modes with percolation theory. Aiming to be “reliable, invulnerable, resilient, potential, and active”, our proposed traffic health management framework includes modeling, evaluation, diagnosis, and improvement. Our proposed framework may shed light on traffic management for megacities and urban agglomerations around the world. This new approach may offer innovative insights for systems science and engineering in future intelligent infrastructure management.

关键词: traffic health     health management     critical infrastructure     systems science and engineering    

Structural health monitoring with fiber optic sensors

F. ANSARI

《机械工程前沿(英文)》 2009年 第4卷 第2期   页码 103-110 doi: 10.1007/s11465-009-0032-y

摘要: Optical fiber sensors have been successfully implemented in aeronautics, mechanical systems, and medical applications. Civil structures pose further challenges in monitoring mainly due to their large dimensions, diversity and heterogeneity of materials involved, and hostile construction environment. This article provides a summary of basic principles pertaining to practical health monitoring of civil engineering structures with optical fiber sensors. The issues discussed include basic sensor principles, strain transfer mechanism, sensor packaging, sensor placement in construction environment, and reliability and survivability of the sensors.

关键词: Bridges     structural health monitoring     smart skins     cracks     strains     displacements     fiber optic sensors     FBG     structures    

Temporal variation of PM-associated health effects in Shijiazhuang, Hebei

《环境科学与工程前沿(英文)》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1376-0

摘要:

•Annual mean PM2.5 in Shijiazhuang were 87, 95, and 82 µg/m3 in 2015–2017.

关键词: PM2.5     Health effects     Integrated exposure-response model     Shijiazhuang    

Multimedia distribution and health risk assessment of typical organic pollutants in a retired industrial

《环境科学与工程前沿(英文)》 2023年 第17卷 第11期 doi: 10.1007/s11783-023-1742-9

摘要:

● A fine portrayal of organic pollutants in a retired industrial park is provided.

关键词: Organic pollutants     Retired industrial park     Spatial correlation     Health risk assessment    

Individualized medicine, health medicine, and constitutional theory in Chinese medicine

null

《医学前沿(英文)》 2012年 第6卷 第1期   页码 1-7 doi: 10.1007/s11684-012-0173-y

摘要:

The patterns of modern science and changes in the medical model can result in the transformation of the current state of individualized and health medicines into being the primary trend in medical development. Chinese and Western medical systems are dissimilar in terms of value orientations, thinking style, and research directions because of their different historical and cultural backgrounds. Individualized treatment in modern medicine is mainly established based on individual genome information and the differences in mononucleotide polymorphi-sms. However, such treatment method is expensive, creates an uncertain genetic marker, and leads to different result interpretations, among other problems. The Chinese constitutional theory developed in the 1970s expresses the principle behind Chinese health medicine and individual treatment and provides the corresponding methods. The Chinese constitutional theory divides the constitution of the Chinese population into nine categories based on established classification criteria. It promotes the study of the relationship of each constitution to diseases and Chinese medicine preparation toward adjusting the constitution and preventing diseases. The theory also provides methods and tools for individualized treatment. Constitution identification shows the direction and provides the core technology for the evaluation of the health status. By combining the developments in modern biotechnology, new diagnostic techniques and treatment models of constitution-differentiation, disease-differentiation, and syndrome-differentiation can be established for the development of individualized Chinese medicine treatment and health medicine for the international medical community.

关键词: individualized medicine     health medicine     constitutional theory in Chinese medicine    

Effective interventions on health effects of Chinese rural elderly under heat exposure

《环境科学与工程前沿(英文)》 2022年 第16卷 第5期 doi: 10.1007/s11783-022-1545-4

摘要:

● Education and subsidy were effective interventions during short-term heat exposure.

关键词: High temperature     Health effect     Comprehensive evaluation     Intervention     Rural elderly    

E-waste environmental contamination and harm to public health in China

null

《医学前沿(英文)》 2015年 第9卷 第2期   页码 220-228 doi: 10.1007/s11684-015-0391-1

摘要:

The adverse effects of electronic waste (e-waste) on the human body have stirred up concern in recent years. China is one of the countries that confront serious pollution and human exposure of e-waste, and the majority of the population is exposed to potentially hazardous substances that are derived from informal e-waste recycling processes. This study reviews recent reports on human exposure to e-waste in China, with particular focus on exposure routes (e.g., inhalation and ingestion) and several toxicities of human (e.g., endocrine system, respiratory system, reproductive system, developmental toxicity, neurotoxicity, and genetic toxicity). Pieces of evidence that associate e-waste exposure with human health effects in China are assessed. The role of toxic heavy metals (e.g., lead, cadmium, chromium, mercury, and nickel) and organic pollutants (e.g., polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyl (PCBs), polycyclic aromatic hydrocarbons (PAHs), polybrominated biphenyls (PBBs), polyhalogenated aromatic hydrocarbons (PHAHs), bisphenol A (BPA)) on human health is also briefly discussed.

关键词: e-waste     heavy metal     organic pollutant     hazardous     toxicity     human health     China    

Integration of current identity-based district-varied health insurance schemes in China: implications

null

《医学前沿(英文)》 2012年 第6卷 第1期   页码 79-84 doi: 10.1007/s11684-012-0179-5

摘要:

With China’s great efforts to improve public health insurance, clear progress has been achieved toward the ambitious full health insurance coverage strategy for all. The current health insurance schemes in China fall into three categories: urban employee basic health insurance scheme, urban resident scheme, and new rural cooperative medical system. Despite their phasic success, these substantially identity-based, district-varied health insurance schemes have separate operation mechanisms, various administrative institutions, and consequently poor connections. On the other hand, the establishment and implementation of various health insurance schemes provide the preconditioning of more sophisticated social health insurance schemes, the increase in the income of urban and rural people, and the great importance attached by the government. Moreover, the reform of the “Hukou” (household register) system provides economical, official, and institutional bases. Therefore, the establishment of an urban-rural integrated, citizen-based, and nationwide-universal health insurance scheme by the government is critically important to attain equality and national connection. Accordingly, the differences between urban and rural areas should be minimized. In addition, the current schemes, administrative institutions, and networks should be integrated and interconnected. Moreover, more expenditure on health insurance might be essential for the integration despite the settings of global financial crisis. Regardless of the possible challenges in implementation, the proposed new scheme is promising and may be applied in the near future for the benefit of the Chinese people and global health.

关键词: health insurance     urban employee basic health insurance scheme     urban-resident scheme     new rural cooperative medical system    

标题 作者 时间 类型 操作

Machine learning and neural network supported state of health simulation and forecasting model for lithium-ion

期刊论文

结构健康监测数据科学与工程研究进展

鲍跃全, 陈智成, 魏世银, 徐阳, 唐志一, 李惠

期刊论文

An adaptive data-driven method for accurate prediction of remaining useful life of rolling bearings

Yanfeng PENG, Junsheng CHENG, Yanfei LIU, Xuejun LI, Zhihua PENG

期刊论文

Primary health care for all by 2020: The systematic reform of the medical and health system in China

期刊论文

The next step of community health construction: Training general practitioners and implementing health

Kan ZHANG MM, Wei DONG MM, Ying-Yao CHEN MD,

期刊论文

基于RTK GPS系统的结构安全监测系统研究

王人鹏,姚连璧,孟晓林

期刊论文

Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

期刊论文

Percolation-based health management of complex traffic systems

期刊论文

Structural health monitoring with fiber optic sensors

F. ANSARI

期刊论文

Temporal variation of PM-associated health effects in Shijiazhuang, Hebei

期刊论文

Multimedia distribution and health risk assessment of typical organic pollutants in a retired industrial

期刊论文

Individualized medicine, health medicine, and constitutional theory in Chinese medicine

null

期刊论文

Effective interventions on health effects of Chinese rural elderly under heat exposure

期刊论文

E-waste environmental contamination and harm to public health in China

null

期刊论文

Integration of current identity-based district-varied health insurance schemes in China: implications

null

期刊论文