This two-volume set of LNICST 414 and 415 constitutes the refereed post-conference proceedings of the 2nd International Conference on IoT and Big Data Technologies for Health Care, IoTCARE 2021, which took place in October 2021.

Research on the universal access security authentication technology of multi-source heterogeneous terminal communication module.- Research on Intelligent Operation and Maintenance Technology of Pumped Storage Power Plant Based on 5G.- Smart Grid Service Transmission Accuracy Optimization Technology Based on 5G Technology.- Research on Hybrid Communication Networking Protocol Optimization Technology of Ubiquitous Electric Internet of Things.- Forecasting method of monthly clearing price under the background of continuous adjustment of power market supply and demand.- Automatic response method of grid demand under the background of new energy consumption.- Effect evaluation of College English blended teaching based on factor analysis and association rules.- Design of golfer’s heart rate data transmission system based on machine learning .- Design of healthcare data analysis system based on operational research and differential evolution algorithm.- Research on reliability evaluation of intelligent energy integrated service platform based on hierarchical linear model.- Design of clinical medical data monitoring system based on artificial intelligence and big data.- Construction of pediatric medication data security cloud storage model based on Internet of things technology.- Mathematical model of data partition storage in Network Center Based on blockchain.- Enterprise Cluster Intelligent Manufacturing Information Management System Based On Wireless Communication Technology.- 3D-HEVC deep video information hiding and secure transmission method.- Research on difference elimination method between small sample databases based on feature extraction.- Research on Homomorphic Retrieval Method of Private Database Secrets in Multi-server Environmen.- Low-frequency noise characteristic extraction method of electronic components based on data mining.- X-band radar detection target tracking method based on Internet of things sensing technology.- Research on hybrid encryption of cross border e-commerce transaction information based on B+ search tree algorithm.- Research on fuzzy retrieval method of blockchain information based on B+tree index structure.- Reliability analysis method of multi area fault diagnosis and location in power grid with missing information.- Reliability analysis of real time operation state of power system based on K-nearest neighbor.- Low resolution license plate recognition based on intelligent data processing and prediction algorithm.- Design and application of security monitoring system for perception terminal of power Internet of things.- Reliability evaluation model of online teaching quality based on big data technology.- Reliability detection method of online education resource sharing based on blockchain.- Research on inventory control method of cold chain logistics enterprises under the background of new energy consumption.- Fault detection method of electronic circuit converter based on dynamic sequence response.- Reliability analysis of power side information acquisition model based on wireless sensor.- Research on Obstacle Avoidance Tracking Planning of Hyper-redundant Manipulator Based on VR Technology.- High voltage cable shield voltage monitoring method considering coil flu.- construction cost over budget control system based on BIM Technology.- Cluster evaluation method of building decoration cost rationality based on BIM model.- Power frequency control method of electrical equipment under Internet of things technology.- PID based automotive electronically controlled power steering system in the Internet of things environment.- Research on Debounce Method of Electronic Imaging Equipment Based on Feature Point Matching.-  An incomplete license plate image intelligent recognition system based on the generated counter network.- Data transmission reliability detection of hybrid information system based on smart contract.- Research on Network Security Authentication Method Based on Data Mining Technology.- High reliability design of student status information acquisition system in ideological and political classroom under multi-target tracking.- Weak vibration signal extraction method of mechatronics equipment based on stochastic resonance.- Fast integration system of English online learning resources based on multi sensor network.- Quality evaluation of human resource management information system based on intelligent optimization algorithm.- Human resource social insurance data dynamic update system based on wireless communication.- Design of wireless audio real time transmission model based on body area network technology.- Time-frequency analysis of vibration signal distribution of rotating machinery based on machine learning and EMD decomposition.- Synchronous monitoring method of multi-manipulator trajectory signals based on machine learning.- Big data stepwise regression correction method for forearm wrong posture in track and field.- Intelligent Sharing Technology of MobileMedical Dynamic Data Based on Internet of Things.- Multi channel data encryption transmission algorithm of medical Internet of things based on improved mqtt protocol.- Design of Innovation and Entrepreneurship Effect Evaluation System for College Students Based on MOA Model.- Design of human resource distance education system based on Internet of things technology.- Intelligent Encrypted Storage Method for Medical Health Database Based on Internet of Things Qing-bang.- Design of Single Camera 3D Laser Scanning System Based on Artificial Intelligence.- Design of enterprise intelligent decision support system based on Data Mining.- Recommendation method of nursing teaching resources in geriatric internal medicine based on Internet of things technology.- Recognition of human abnormal behavior in static image of intelligent monitoring system based on neural network algorithm.- Fall behavior recognition algorithm in video surveillance based on feature and deep learning.- Pneumonia detectionalgorithm based on improved YOLOv3.- Breast Ultrasound Images Clustering Analysis Using Deep Clustering Method.- Information Fusion for The Devices of Internet of Things.- Comparing Methods of Imputation for Time Series Missing Values.- Clustering-XGB Based Dynamic Time Series Prediction.- Time Series Data Imputation Using ExpectationMaximization with Principal Component Analysis.- Time Series Prediction with Preprocessing and Clustering.- Using an Ensembled Boosted Model for IoT Time Series Regression.- Dynamic Time Warping based Clustering for Time Series Analysis.- Voltage estimation of PH meter calibrator using integration of Kalman/FIR and R-T-S smoothing method.- Human tracking using distributed Dual-EKF filter.- Evaluation and Analysis of Basic-Level Aircraft Maintenance and Support Capabilities.- Robust Unscented Kalman Filter for Target Tracking Based on Mahalanobis Distance.- Analysis of Chaotic Behavior in Single Mode NH3 Mo-lecular Laser-.- Collaborative Path OptimizationMethod for Flood Control Material Storage.- Detection of rail bottom damage defects based on Recurrent Neural Network.- Short term load forecasting method based on full convolution deep learning.- AI-Based Internet of Medical Things 76 Covid-19 detection by Wavelet Entropy and Cat Swarm Optimization.- A Short Survey on Deep Learning Models for Covid-19 Detection based on Chest CT and X-ray Images.- IoT and AI Technology Used for COVID-19 Pandemic Control.- Review of Covid-19 Diagnosis Techniques Combined with Machine Learning and AI Analysis.