yusuke1997/dblp-id-title huggingface dataset:
Point Cloud Registration Algorithm Based on Laplace Mixture Model
Computational Simulation of a Field-Induced Charged Board Event Test Bench Using Transient Analysis
Optimization Algorithm to Reduce Training Time for Deep Learning Computer Vision Algorithms Using Large Image Datasets With Tiny Objects
Research on Function Family of Large Bending Model Based on Mechanics for Cannula Flexible Needle
A Decision Support System for Urban Agriculture Using Digital Twin: A Case Study With Aquaponics
Subjective and Objective Quality Assessments of AI-Generated Images for Language E-Learning
Noise-Aware Extended U-Net With Split Encoder and Feature Refinement Module for Robust Speaker Verification in Noisy Environments
Temporal Graph Traversals Using Reinforcement Learning With Proximal Policy Optimization
Negative Group Delay Theory on Li Topology
Common-Mode Voltage Mitigation Technique in Motor Drive Applications by Applying a Sampling-Time Adaptive Multi-Carrier PWM Method
Fast-Update Iterative Learning Control for Performance Enhancement With Application to Motion Systems
An Invariant Method for Electric Vehicle Battery State-of-Charge Estimation Under Dynamic Drive Cycles
Predicting Rumor Retweeting Behavior of Social Media Users in Public Emergencies
Domain Transfer Multiple Kernel Boosting for Classification of EEG Motor Imagery Signals
Factorized 3D-CNN for Real-Time Fall Detection and Action Recognition on Embedded System
Bidirectional Mode Slicing and Re-Combining for Mode Conversion in Planar Waveguides
Adverse to Normal Image Reconstruction Using Inverse of StarGAN for Autonomous Vehicle Control
Core-View Contrastive Learning Network for Building Lightweight Cross-Domain Consultation System
Sentiment Analysis in Turkish Question Answering Systems: An Application of Human-Robot Interaction
Robust Current Control of Voice Coil Motor in Tip-Tilt Mirror Based on Disturbance Observer Framework
Feature Extraction Technique Using Weighted Histogram Analysis Method (WHAM) for Herbs Discrimination Based on Gas Chromatography Signal
A Survey on Intent-Driven Networks
AI Inspired Intelligent Resource Management in Future Wireless Network
Security Threats and Artificial Intelligence Based Countermeasures for Internet of Things Networks: A Comprehensive Survey
Service Relationship Orchestration: Lessons Learned From Running Large Scale Smart City Platforms on Kubernetes
Numerical Investigation on the Transmission Loss of Skin Panels Based on the Intelligent PSO-CGA Algorithm
A Real-Time LoRa Protocol for Industrial Monitoring and Control Systems
Interactivity Anomaly Detection in Remote Work Scenarios Using LSTM
A Method for Measuring Strawberry Leaf Area Based on Three-Dimensional Point Cloud Instance Segmentation
Optimized Scheduling of Integrated Energy Systems Considering Electric Vehicles and Carbon Emission Trading
Route Choice Considering Hybrid Regret and Utility Modeling Under Big Data Context
BioBridge: Unified Bio-Embedding With Bridging Modality in Code-Switched EMR
3D Point Cloud Classification for Autonomous Driving via Dense-Residual Fusion Network
Generating Infinitely Many Coexisting Attractors via a New 3D Cosine System and Its Application in Image Encryption
Research on Inception Module Incorporated Siamese Convolutional Neural Networks to Realize Face Recognition
Fixed-Sign Binary Neural Network: An Efficient Design of Neural Network for Internet-of-Things Devices
The Optimal Wavelet Basis Function Selection in Feature Extraction of Motor Imagery Electroencephalogram Based on Wavelet Packet Transformation
Control Scheme and Performance Analysis of Dual-Frequency Single-Phase Grid-Connected Inverter Interfaced With Weak and Distorted Grids
Non-Isolated Fourth-Order Boost DC-DC Converter for Power Management in Low Voltage Low Power DC Grids: Design and Interaction Analysis
Evaluation of Blockchain-Based Tracking and Tracing System With Uncertain Information: A Multi-Criteria Decision-Making Approach
Eliminating Meteorological Dependencies in Solar Power Forecasting: A Deep Learning Solution With NeuralProphet and Real-World Data
3DDGD: 3D Deepfake Generation and Detection Using 3D Face Meshes
Fair-VQA: Fairness-Aware Visual Question Answering Through Sensitive Attribute Prediction
A Comparative Analysis of Topic Reduction Techniques for BERTopic
A Load-Aware Clustering Model for Coordinated Transmission in Future Wireless Networks
Assessment and Ranking Framework for the English Skills of Pre-Service Teachers Based on Fuzzy Delphi and TOPSIS Methods
WALLACE: Weakly Supervised Learning of Deep Convolutional Neural Networks With Multiscale Evidence
Detection of Community Structures in Dynamic Social Networks Based on Message Distribution and Structural/Attribute Similarities
A Semi-Supervised Autoencoder With an Auxiliary Task (SAAT) for Power Transformer Fault Diagnosis Using Dissolved Gas Analysis
Bandwidth, Gain Improvement, and Notched-Band Frequency of SWB Wave Coplanar Vivaldi Antenna Using CSRR
Reliable Multi-Object Tracking Model Using Deep Learning and Energy Efficient Wireless Multimedia Sensor Networks
Screen Printed Flexible Water Activated Battery on Woven Cotton Textile as a Power Supply for E-Textile Applications
Device Agent Assisted Blockchain Leveraged Framework for Internet of Things
Topological Design of a Trabecular Bone Structure With Morphology and Mechanics Control for Additive Manufacturing
Through Wall Human Detection Under Small Samples Based on Deep Learning Algorithm
Moving Object Detection With Deep CNNs
Robust Internal-Loop Compensator Based Sliding Mode Control of Nonlinear Systems in the Presence of Mismatched Disturbances
H ∞ Control of the Actively Controlled Systems With Input Time Delay Based on CHsCTA Model Transformation
A Data-Driven Approach for Estimating the Effects of Station Closures in Metro Systems
Predicting Block Delays in Bitcoin Blockchain via Bayesian and Non-Bayesian Logistic Regression
An Overview on Analyses and Suppression Methods of Trapping Effects in AlGaN/GaN HEMTs
Accelerating Multilingual Cryptocurrency Forensics: An NLP-Driven Approach for Efficient Mnemonic Identification
The Effect of SOA on An Asynchronous ERP and VEP-Based BCI
Investigation of the Design Methodology for Transmission-Freeform Surface Set Mirrors Used in Solar Spectrum Simulators
Study of Wind Turbine Fault Diagnosis and Early Warning Based on SCADA Data
Machine Learning-Based L 1 Adaptive Control for a Class of Chaotic Systems
Artificial Intelligence-Based Intrusion Detection and Prevention in Edge-Assisted SDWSN With Modified Honeycomb Structure
An Enhanced Gravity Model for Determining Crucial Nodes in Social Networks Based on Degree K-Shell Eigenvector Index
Volleyball Skill Assessment Using a Single Wearable Micro Inertial Measurement Unit at Wrist
Quantitative Method for Ultrasonic Testing of Lead Seal Defects in High Voltage Cable Accessories
A Super-Learner Ensemble of Deep Networks for Vehicle-Type Classification
Integrated Morphing Strategy and Trajectory Optimization of a Morphing Waverider and Its Online Implementation Based on the Neural Network
Keyframe-Based Camera Relocalization Method Using Landmark and Keypoint Matching
Learning-Based Instantaneous Drowsiness Detection Using Wired and Wireless Electroencephalography
Double Node Upset Immune RHBD-14T SRAM Cell for Space and Satellite Applications
Analysis of Bus Trip Characteristic Analysis and Demand Forecasting Based on GA-NARX Neural Network Model
Cross-Domain Explainable Recommendation Using Graph Convolutional Networks and a Topic Model
An End-to-End Platform for Managing Third-Party Risks in Oil Pipelines
A Novel Divergence-Based Approach for Fire Ignition Point Localization Through Smoke Pattern Analysis
A Practical Structural Health Monitoring System for High-Speed Train Car-Body
Parallel Quantum Rapidly-Exploring Random Trees
Optimum Medium PRF Selection Using Reinforcement Learning
Comparison of Current Deep Convolutional Neural Networks for the Segmentation of Breast Masses in Mammograms
Emerging SMOTE and GAN Variants for Data Augmentation in Imbalance Machine Learning Tasks: A Review
GDRMA: Graph Neural Networks for Document Retrievals With Mean Aggregation
FPGA Hardware Implementation of Efficient Long Short-Term Memory Network Based on Construction Vector Method
An Efficient Seismic Data Acquisition Based on Compressed Sensing Architecture With Generative Adversarial Networks
PanoDetNet: Multi-Resolution Panoramic Object Detection With Adaptive Feature Attention
Active Shimmy Control Method for Driverless Electric Vehicle Considering Unknown Sensor Measurement Error via Sampled-Data Output Feedback
Active Traffic Sensor Location Problem for the Uniqueness of Path Flow Identification in Large-Scale Networks
The Study on Near-Field Scattering of a Target Under Antenna Irradiation by TDSBR Method
DESDEO: The Modular and Open Source Framework for Interactive Multiobjective Optimization
Adaptive Synchronization of Fractional-Order Nonlinearly Coupled Complex Networks With Time Delay and External Disturbances
A Radial Line Slot-Array Antenna With Low Side Lobes and a Uniform-Phase, Tapered-Amplitude Aperture Field Distribution
Making Connected Cars Untraceable via DSRC Radios
Discrete-Time Adaptive Control Design for Ionic Polymer-Metal Composite Actuators
Diagnosis and Analysis of Diabetic Retinopathy Based on Electronic Health Records
Signal Detection Scheme Based on Adaptive Ensemble Deep Learning Model
Emotion Recognition From EEG Signal Focusing on Deep Learning and Shallow Learning Techniques
A Novel MCIs Dual-Bridge for Plasma Cutting Power Supply With Arc Current Feedforward Compensated Phase-Shift Control
A New Centralized Access Control Scheme for D2D-Enabled mmWave Networks
Time-Varying DOA Tracking Algorithm Based on Generalized Labeled Multi-Bernoulli
3-D Beamforming Training Using Mutually Unbiased Bases for Cell Discovery in mm-Wave Systems
Limited Gradient Descent: Learning With Noisy Labels
Secure UAV-Aided Mobile Edge Computing for IoT: A Review
Lifelong Person Search
Multi-Objective Trade-Off Quantification Based Design Optimization for Power Electronic Systems in More-Electric-Aircrafts
Distributed Artificial Intelligence Enabled Aerial-Ground Networks: Architecture, Technologies and Challenges
Robust Passivity Control for 2-D Uncertain Markovian Jump Linear Discrete-Time Systems
Takagi-Sugeno Fuzzy Model-Based Semi-Active Control for the Seat Suspension With an Electrorheological Damper
Constrained Multiple Model Particle Filtering for Bearings-Only Maneuvering Target Tracking
Dynamic Relationship Between Tourism and Homogeneity of Tourist Destinations
Retinal Image Registration Using Partial Intensity Invariant Feature Descriptor and Redundant Keypoints Elimination Techniques
A New Multilevel Inverter Topology With Reduce Switch Count
Accurate Positioning Siamese Network for Real-Time Object Tracking
Breast Cancer Prediction Using Shapely and Game Theory in Federated Learning Environment
Incrementally Updating the Discovered High Average-Utility Patterns With the Pre-Large Concept
Research on Robust Model Predictive Control for Electro-Hydraulic Servo Active Suspension Systems
Design Optimization and Performance Analysis of High Torque Density and Efficiency Motors for eVTOL Applications
Free Space Optical Communication in Long-Reach Unidirectional Ring-Architecture Fiber Network
A New Solar Radiation Model for a Power System Reliability Study
A Novel Image Compression-Encryption Scheme Based on Chaos and Compression Sensing
Shared-Private Information Bottleneck Method for Cross-Modal Clustering
Expression of Concern: Backpropagation-Based Parameter Tuning and Granular Alignment for Multi-Target Domain Adaptation
Forward-Looking MIMO-SAR for Enhanced Radar Imaging in Autonomous Mobile Robots
AI-Driven Optimization of Low-Energy IoT Protocols for Scalable and Efficient Smart Healthcare Systems
Handwritten Pattern Recognition Using Birds-Flocking Inspired Data Augmentation Technique
Blockchain-Based Electronic Health Records Management: A Comprehensive Review and Future Research Direction
Physical Layer Security in Uplink NOMA Multi-Antenna Systems With Randomly Distributed Eavesdroppers
Practical Production Scheduling for Hot Metal Pretreatment-Steelmaking-Continuous Casting Process Involving Preventive Maintenance Consideration
The Connectivity Evaluation Among Wells in Reservoir Utilizing Machine Learning Methods
Visual Hull Tree: A New Progressive Method to Represent Voxel Data
High-Throughput, Sorted QR Accelerator for Non-Linear Processing in Open-RAN Systems
A Review on Human-Centered IoT-Connected Smart Labels for the Industry 4.0
Some Integral Inequalities for Log-h-Convex Interval-Valued Functions
A Robust Audio Fingerprinting Using a New Hashing Method
Enhancing Credit Risk Decision-Making in Supply Chain Finance With Interpretable Machine Learning Model
Modeling and Analysis of Aeroelasticity and Sloshing for Liquid Rocket
Multivariable Coordinated Control Strategy for Efficiency Optimization Without Real-Time Wireless Feedback Communication in Wireless Power Transfer
FraudX SimS: A Synthetic Dataset for Anomaly Detection in Payment-Card Transactions
Flexible Positioning of Source-Detector Arrays in 3D Visualization Platform for Monte Carlo Simulation of Light Propagation
Trusted Opportunistic Routing Based on Node Trust Model
Improved Current Decoupling Method for Robustness Improvement of LCL-type STATCOM Based on Active Disturbance Rejection Control
Characterization and Model Parameters of Large Commercial Supercapacitor Cells
iVAE-GAN: Identifiable VAE-GAN Models for Latent Representation Learning
Audio Watermarking for Security and Non-Security Applications
A Fast Lightweight Spatiotemporal Activity Prediction Method
Research on Data Routing Strategy of Deduplication in Cloud Environment
ChatTf: A Knowledge Graph-Enhanced Intelligent Q&A System for Mitigating Factuality Hallucinations in Traditional Folklore
Solving Nonlinear Multi-Order Fractional Differential Equations Using Bernstein Polynomials
7 T Niobium-Titanium-Based Persistent-Mode Superconducting Magnet for an Electron Beam Ion Source
Gaze Exploration Index (GE i)-Explainable Detection Model for Glaucoma
An Efficient Deadlock Recovery Policy for Flexible Manufacturing Systems Modeled With Petri Nets
Efficient Algorithm for Multi-Bit Montgomery Inverse Using Refined Multiplicative Inverse Modular 2 K
Linear Active Disturbance Rejection Control for DC Side Voltage of Single-Phase Active Power Filters
Refined Analytical EM Model of IC-Internal Shielding for Hardware-Security and Intra-Device Simulative Framework
Dynamic Slingshot Operation for Low-Operation- Voltage Nanoelectromechanical (NEM) Memory Switches
Dynamic Chameleon Authentication Tree for Verifiable Data Streaming in 5G Networks
Multi-Branch Deep Fusion Network-Based Automatic Detection of Weld Defects Using Non-Destructive Ultrasonic Test
Optimal Control of Probabilistic Boolean Networks: An Information-Theoretic Approach
Federated Learning With Dual-End Gradient Correction and Proxy-Free Self-Distillation
Reducing Signal Overload by Disconnection Tolerant Voice Service in Heterogeneous Networks
Safe Deep Reinforcement Learning-Based Real-Time Multi-Energy Management in Combined Heat and Power Microgrids
Improving Sepsis Prediction Performance Using Conditional Recurrent Adversarial Networks
Multi-State Merkle Patricia Trie (MSMPT): High-Performance Data Structures for Multi-Query Processing Based on Lightweight Blockchain
A New Multi-Link Time-Reversal Prefilter Design for Indoor Wireless Communications
Systematic Review of Brain-Computer Interface-Based User Authentication System: Trends, Challenges, and Directions
A 21-Gb/s Dual-Channel Voltage-Mode Transmitter With Stacked NRZ and PAM4 Drivers
Linked Open Data in Location-Based Recommendation System on Tourism Domain: A Survey
Filling the Gaps in Atrous Convolution: Semantic Segmentation With a Better Context
Probability-Based Energy Reinforced Management of Electric Vehicle Aggregation in the Electrical Grid Frequency Regulation
Load-Aware Energy Efficient Adaptive Large Scale Antenna System
On Adopting Software Analytics for Managerial Decision-Making: A Practitioner's Perspective
Low-Order Space Harmonic Modeling of Asymmetrical Six-Phase Induction Machines
ARDÁN: Automated Reference-Free Defocus Characterization for Automotive Near-Field Cameras
μ-Based Theory in Compliant Force Control for Space Docking
SpiderTrap - An Innovative Approach to Analyze Activity of Internet Bots on a Website
Exact Equality of the MSEs for Two Types of Nonlinear Adaptive Systems: Saturation and Dead-Zone Types
A Parallel-Computing Algorithm for High-Energy Physics Particle Tracking and Decoding Using GPU Architectures
Adaptive Learning Knowledge Networks for Few-Shot Learning
A Single-Phase Single-Source 7-Level Inverter With Triple Voltage Boosting Gain
Cooperative Neuro-Adaptive Fault-Tolerant Tracking Control for a Train Platoon Under Actuator Saturation
A4FL: Federated Adversarial Defense via Adversarial Training and Pruning Against Backdoor Attack
Deterministic System Analysis to Guarantee Worst Case Performance for Optimal ESS and PV Sizing
Ciphertext-Policy Attribute-Based Signcryption With Verifiable Outsourced Designcryption for Sharing Personal Health Records
ProChain: Provenance-Aware Traceability Framework for IoT-Based Supply Chain Systems
Towards a Secure Mobile Edge Computing Framework for Hajj
Gaussian Residual Bidding Based Coalition for Two-Settlement Renewable Energy Market
Multi-Model and Multi-Expert Correlation Filter for High-Speed Tracking
Medical Image Recognition Using a Novel Neural Network Construction Controlled by a Kernel Method Encoder
Research on Multiple-Instance Learning for Tongue Coating Classification
Cucumber Fruits Detection in Greenhouses Based on Instance Segmentation
An Efficient Lattice-Based Verifiable Public-Key Authenticated Encryption With Keyword Search Scheme
Practical DU-CU Placement in an Enhanced Mobile BroadBand Request During 5G Traffic
Air Quality Measurement Based on Double-Channel Convolutional Neural Network Ensemble Learning
A Deep Convolutional Neural Network for Classification of Aedes Albopictus Mosquitoes
Measurement Interface Stiffness of Bonded Structures Using Air-Coupled Ultrasonic Transmission Technology
Automatic Modulation Recognition for Radar Signals via Multi-Branch ACSE Networks
A Deep Learning-Based Benchmarking Framework for Lane Segmentation in the Complex and Dynamic Road Scenes
Design of Graphene-Based Dual-Polarized Switchable Rasorber/Absorber at Terahertz
Evaluating User Interactions in Wearable Extended Reality: Modeling, Online Remote Survey, and In-Lab Experimental Methods
Feedback Quantizer Improved With Simplified Discrete Space Vector Modulation for Power Converters
A Review of Artificial Neural Networks Applications in Maritime Industry
Robot Simulation on Agri-Field Point Cloud With Centimeter Resolution
Comparative Analysis of 3D Shank Kinematics During Walking: Stroke Patients Versus Healthy Individuals
Optimal Multi-Base-Station Selection for Belt-Area Wireless Sensor Networks
Optimized Ensemble Deep Learning for Real-Time Intrusion Detection on Resource-Constrained Raspberry Pi Devices
Transmission Congestion Management Using Generator Sensitivity Factors for Active and Reactive Power Rescheduling Using Particle Swarm Optimization Algorithm
Automatic Detection of Wireless Transmissions
Deep Representation Learning: Fundamentals, Technologies, Applications, and Open Challenges
Optimization of LLC Resonant Converter With Two Degrees of Freedom Based on Operation Stage Trajectory Analysis
An Enhanced Algorithm for Conventional Protection Devices of Transmission Lines With DTLR
Unraveling the Dynamic Characteristics of Inertia Fluctuations in Modern Power Systems
Scalable 5G NR Rate-Matcher and Rate-Dematcher for Efficient Use in FPGA Accelerators
ECG, Respiration, fNIRS, and Eye Tracking for Stress and Mental Workload Monitoring in Human-Machine Interaction
Design and Analysis of Interdigital Electrode Parallel Layout of Multilayer SAW Devices
HIBS-KSharing: Hierarchical Identity-Based Signature Key Sharing for Automotive
Tailings Pond Risk Prediction Using Long Short-Term Memory Networks
Short-Term Hydrological Drought Forecasting Based on Different Nature-Inspired Optimization Algorithms Hybridized With Artificial Neural Networks
Spatial Correlation of Electricity Consumption in China Based on Social Network Approach
Application of Multi-Objective Control in Power and Load Optimization of Wind Turbines
Challenges and Opportunities of Text-Based Emotion Detection: A Survey
Understanding How AI Chatbots Influence EFL Learners' Oral English Learning Motivation and Outcomes: Evidence From Chinese Learners
Efficient Edge AI for Next Generation Smart Mirror Applications
Recurrent Event Networks Based on Subgraph and Attention Enhancement
A Transformer-Less Voltage Equalizer for Energy Storage Cells Based on Double-Tiered Multi-Stacked Converters
Impact of ECG Dataset Diversity on Generalization of CNN Model for Detecting QRS Complex
Which Targets to Protect in Critical Infrastructures - A Game-Theoretic Solution From a Network Science Perspective
A Decision Tree Based Road Recognition Approach Using Roadside Fixed 3D LiDAR Sensors
A Study on the Design of Error-Based Adaptive Robust RBF Neural Network Back-Stepping Controller for 2-DOF Snake Robot's Head
A Bandwidth-Efficient Emulator of Biologically-Relevant Spiking Neural Networks on FPGA
Adaptive Fuzzy Tuning of Smart Transformer for Microgrid-Utility Power Interactions
Adaptive Fuzzy Finite-Time Command Filtered Impedance Control for Robotic Manipulators
Electrical Balance of Plant Approach for Offshore Wind Power Plants: A Brazilian Case Study
The World's First Real-Time Testbed for Massive MIMO: Design, Implementation, and Validation
Comparing Cross-Subject Performance on Human Activities Recognition Using Learning Models
Generation of Background Model Image Using Foreground Model
E-Government Insights to Smart Cities Research: European Union (EU) Study and the Role of Regulations
ScrapNet: An Efficient Approach to Trash Classification
Optimal Coil Design and irDA-Based Communication Method for Auto-Guided Vehicles With Thermally Stable and High-Efficiency Operation
Design and Analysis of a Novel Mechanic- Electronic-Hydraulic Powertrain System for Agriculture Tractors
Optimal PI λ D μ Controller Design for Two Wheeled Inverted Pendulum
Connected and Autonomous Vehicle Cohort Speed Control Optimization via Neuroevolution
Learned Lossless Image Compression With Combined Channel-Conditioning Models and Autoregressive Modules
A Motion for No Motion: The Redundancy of Motion Feedback in Low-Velocity Remote Driving of a Real Vehicle
2019 Novel Coronavirus-Infected Pneumonia on CT: A Feasibility Study of Few-Shot Learning for Computerized Diagnosis of Emergency Diseases
Enhanced Word-Unit Broad Learning System With Sememes
Advanced Statistical and Meta-Heuristic Based Optimization Fault Diagnosis Techniques in Complex Industrial Processes: A Comparative Analysis
Quantifying Perception of Security Through Social Media and Its Relationship With Crime
Measurement and Simulation-Based Exposure Assessment at a Far-Field for a Multitechnology Cellular Site up to 5G NR
LRM: A Location Recombination Mechanism for Achieving Trajectory k-Anonymity Privacy Protection
Energy Management for Distribution Networks Through Capacity Constrained State Optimization
Tempus: Probabilistic Network Latency Verification
n-Intuitionistic Polygonal Fuzzy Aggregation Operators and Their Application to Multi-Attribute Decision Making
Reliability Assessment of Optical Physical Unclonable Functions Based on the Spatial Distribution of Catastrophic Failure Sites in MIM Structures
Memory Leak Detection in IoT Program Based on an Abstract Memory Model SeqMM
Object-First Incremental Algorithms for Updating Approximations in Multi-Granulation Fuzzy Probabilistic Rough Sets Over Two Universes
Assessing Vircators' Reliability Through Uncertainty and Sensitivity Analyses Using a Surrogate Model
Robust and Low-Overhead Hybrid Beamforming Design With Imperfect Phase Shifters in Multi-User Millimeter Wave Systems
Soft Barometric Tactile Sensor Utilizing Iterative Pressure Reconstruction