yusuke1997/dblp-id-title huggingface dataset:
What are the Indonesian Concerns About the Internet of Things (IoT)? Portraying the Profile of the Prospective Market
A Novel Event-Related Potential-Based Brain-Computer Interface for Continuously Controlling Dynamic Systems
Development of a Dual-Polarized Direction-Variable Liquid-Crystal Meta-Surface Reflector for Intelligent Reflecting Surface
Cassandra: Detecting Trojaned Networks From Adversarial Perturbations
Texture-Generic Deep Shape-From-Template
Adjusting Xception Neural Network by Improved Human Evolutionary Optimizer for Fine Art Sorting
Data-Driven Estimation of Heavy-Truck Residual Value at the Buy-Back
Comparative Analysis Four Different Ways of Calculating Yield Index SSS pk Based on Information of Control Chart, and Six Sigma, to Measuring the Process Performance in Industries: Case Study in Aden's Oil Refinery, Yemen
Efficient Design of Tightly Coupled Dipole Array Using an Equivalent Circuit-Based Approach
Multiple Comparisons With the Best and Difference Test Statistic for Supplier Selection for Nonlinear Profiles
Fast Fourier Transform Networks for Object Tracking Based on Correlation Filter
Modeling and Analysis of Cooperative Packet Recovery Protocol
Microwave Breast Phantom Measurement System With Compact Side Slotted Directional Antenna
Deep Learning-Based Thermal Image Reconstruction and Object Detection
Autoregressive With Slack Time Series Model for Forecasting a Partially-Observed Dynamical Time Series
Machine Learning for Medium Access Control Protocol Recognition in Communications Networks
Enhancing Accuracy of 2D 1 H- 13 C HSQC NMR Spectra Under Low Sampling Rates via Non-Harmonic Analysis and Band Segmentation
Data Anonymization Using Pseudonym System to Preserve Data Privacy
A Survey of Performance Enhancement Techniques of Antipodal Vivaldi Antenna
Corrections to "A Method for Detecting Small Slow Targets on Sea Surface Based on FC-MCNN"
Parameter Identification for a Power Distribution Network Based on MCMC Algorithm
Finite-Time Output Robust Control for Restricted Joint Flight Emulator Robotic Arm With Adaptive Tangent Barrier Gains
Golden Jackal Optimization With Joint Opposite Selection: An Enhanced Nature-Inspired Optimization Algorithm for Solving Optimization Problems
Hybrid Method for Short-Term Time Series Forecasting Based on EEMD
Development of an Ontology for the Inclusion of App Users With Visual Impairments
A Sanitization Approach to Secure Shared Data in an IoT Environment
Impact of Displacement Defect Owing to Cosmic Rays on Three-Nanometer-Node Nanosheet FET 6T Static Random Access Memory
Integrating Deep Learning and SHAP for Breast Cancer Classification and Biomarker Discovery Using Gene Expression Data
GPU-Accelerated Multivariate Empirical Mode Decomposition for Massive Neural Data Processing
Noncontact Sleep Monitoring System Under a Mattress
An Investigation Into the Impact of Typical Defects on Transformer Oil Pressure: Unveiling the Potential for Fault Localization
Self-Repairing Hybrid Adder With Hot-Standby Topology Using Fault-Localization
Application of Uncertain Rényi Entropy as a Metric for Risk in Portfolio Optimization
Hybrid Self-Backhaul and Cache Assisted Millimeter Wave Two-Tier Heterogeneous Networks With MIMO Equipped Backhaul Access Points
Coding of Light Fields Using Disparity-Based Sparse Prediction
Reversible Data Hiding Scheme Based on Adjusting Pixel Modulation and Block-Wise Compression for Encrypted Images
Primary Side Hybrid Reconfigurable Compensation for Wireless EV Charging With Constant Current/Constant Voltage Control
A Natural Language Process-Based Framework for Automatic Association Word Extraction
A Study on Testers' Learning Curve in Crowdsourced Software Testing
A Deep Learning Based Multi-Block Hybrid Model for Bike-Sharing Supply-Demand Prediction
Bounds on Covering Radius of Some Codes Over F₂ + uF₂ + vF₂ + uvF₂
Research and Implementation of Constrained Keyframe-Based Virtual Human Video Generation
Wireless Secure Signal Transmission for Distributed Intelligent Surface-Aided Millimeter Wave Systems
Controlling Random Lead Time Demand Through a Flexible Production System Under Supply Chain Management
Performance Analysis of Signature-Based Grant-Free Random Access Under Impersonation Attacks
DropStore: A Secure Backup System Using Multi-Cloud and Fog Computing
UnifiedKP: A Unified Network Knowledge Plane for Large Model-Enabled 6G Networks
Enhancing Fake Review Detection Using Linguistic Exaggeration, BERT Embeddings, and Fuzzy Logic
Deep Ensemble-Based Classifier for Transfer Learning in Rotating Machinery Fault Diagnosis
Resolution Adaptative Network for Cryptanalysis of Asymmetric Cryptosystems
Evaluating the Effectiveness of Advanced Language Models in Detecting and Mitigating Hallucinations Using Structured Question- Answering, Novel Metrics, and Post-Hoc Retrieval
Control of Ripple Eliminators to Improve the Power Quality of DC Systems and Reduce the Usage of Electrolytic Capacitors
Improving Multi-Label Emotion Classification on Imbalanced Social Media Data With BERT and Clipped Asymmetric Loss
SAR-to-Optical Image Translation Using Supervised Cycle-Consistent Adversarial Networks
Dual Hesitant Pythagorean Fuzzy Hamy Mean Operators in Multiple Attribute Decision Making
Hybrid CNN-Transformer Architecture With Xception-Based Feature Enhancement for Accurate Breast Cancer Classification
A Nonmonotonic Parameter Design Approach for Compact Capacitive Power Transfer
Generic Approach to Outsource the Decryption of Attribute-Based Encryption in Cloud Computing
Use of Carry Chain Logic and Design System Extensions to Construct Significantly Faster and Larger Single-Stage N-Sorters and N-Filters
Novel Worst-Case Surface Accuracy Evaluation Method and Its Application in Reflector Antenna Structure Design
LabelGen: An Anomaly Label Generative Framework for Enhanced Graph Anomaly Detection
Tripartite Evolution Game of Railway Safety Supervision Under the Influence of Collusion Within the Enterprise
Histological Image Segmentation and Classification Using Entropy-Based Convolutional Module
Pedestrian Trajectory Prediction and Pose Estimation Considering Behavioral Characteristic Relationships and Noise Inhibition
Older Users Acceptance of Smart Products: An Extension of the Technology Acceptance Model
IIMOF: An Iterative Framework to Settle Influence Maximization for Opinion Formation in Social Networks
Aerial Insights: Deep Learning-Based Human Action Recognition in Drone Imagery
LMGDoc: Light Multigranular GNN for Efficient Document Understanding
Entropy-Based Dynamic Heterogeneous Ant Colony Optimization
A Multiplex Network Perspective of Innovation Diffusion: An Information-Behavior Framework
Incorporating User Willingness in Contract-Based Incentive Mechanism for D2D Cooperative Data Forwarding
Metro Traffic Prediction and Service-Oriented Scheduling Optimization Under Influence of Train Arrivals
Sizing of Microgrid System Including Multi-Functional Battery Storage and Considering Uncertainties
OG-SGG: Ontology-Guided Scene Graph Generation - A Case Study in Transfer Learning for Telepresence Robotics
Design and Performance Analysis of a Single-Port Bidirectional Soft Actuator and Its Integration Into a Versatile 3-Finger Robot Gripper
Adaptive MIMO Detector Using Reduced Search Space and Its Error Rate Estimator in Ultra Dense Network
Performance Analysis of Multiple Antennas Synthetic False Target Jamming
Gaussian Mixture Model-Based Vector Approach to Real-Time Three-Dimensional Path Planning in Cluttered Environment
Modified Hegselmann-Krause Model for Enhancing Opinion Diversity in Social Networks
Modified pqsigRM: RM Code-Based Signature Scheme
Quantum-Enhanced Grid of the Future: A Primer
On the Initial Behavior Monitoring Issues in Federated Learning
Performance Improvement in DRAM Cell Using Novel Nitride/Metal Spacers Structure
Emotion Recognition in EEG Based on Multilevel Multidomain Feature Fusion
Implementation of Stir-Speed Adopted Controllers Onto a Batch Bioreactor for Improved Fermentation
Environmental Adaptive Privacy Preserving Contact Tracing System: A Construction From Public Key Rerandomizable BLS Signatures
Capturing Layout Dependent Effects in MOSFET Circuit Sizing Using Precomputed Lookup Tables
Resource Optimization for Cognitive Radio Based Device to Device Communication Under an Energy Harvesting Scenario
A Low Power Cryptography Solution Based on Chaos Theory in Wireless Sensor Nodes
Audio-Visual Multimedia Quality Assessment: A Comprehensive Survey
Review and Analysis of Patients' Body Language From an Artificial Intelligence Perspective
Various Aging Processes in a Paper-Natural Ester Insulation System in the Presence of Copper and Moisture
A Thermal and Vibrational Feedback Glove Based on the Tactile Characteristics of Human Hand Skin
Single Morphing Attack Detection Using Feature Selection and Visualization Based on Mutual Information
An Effective Burst Access Scheme for Lossless Frame Buffer Compression on a Video Decoder
Detecting Domain Names Generated by DGAs With Low False Positives in Chinese Domain Names
Real-Time Sensing and On-Site Spotting Scheme of Multi-Type WLAN Spycams
A Moving Target Tracking Framework Based on a Set and Its Topological Space
Accurate DOA Estimation With Adjacent Angle Power Difference for Indoor Localization
Novel Droop Control of Battery Energy Storage Systems Based on Battery Degradation Cost in Islanded DC Microgrids
A Comprehensive Review of Solutions and Strategies for Cold Start of Automotive Proton Exchange Membrane Fuel Cells
Real-Time Multi-Vehicle Scheduling in Tasks With Dependency Relationships Using Multi-Agent Reinforcement Learning
A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System With Reduced Switch Count
Design and Optimization of Physical Education Assessment Index System Based on Big Data Analysis
Artificial Intelligence Security Threat, Crime, and Forensics: Taxonomy and Open Issues
A Novel Analytical Approach Using Rough Set and Genetic Algorithm of a Stable Sensorless Induction Motor Drives in the Regenerating Mode
Novel Method for Comprehensive Corrosion Evaluation of Grounding Device
Deep Learning-Driven Labor Education and Skill Assessment: A Big Data Approach for Optimizing Workforce Development and Industrial Relations
Systematic Review on AI-Blockchain Based E-Healthcare Records Management Systems
Multi-Images Encryption Scheme Based on 3D Chaotic Map and Substitution Box
Experimental Investigation of the Effect of Conductor Temperature on Corona Performance in Overhead Transmission Lines
Zonal Thermal Room Original Model With Kron's Method
Embracing the Smart-Home Revolution in Asia by the Elderly: An End-User Negative Perception Modeling
Integrating Topic-Aware Heterogeneous Graph Neural Network With Transformer Model for Medical Scientific Document Abstractive Summarization
Ball Motion Control in the Table Tennis Robot System Using Time-Series Deep Reinforcement Learning
Enhancing the Accuracies of Age Estimation With Heterogeneous Databases Using Modified CycleGAN
Secure Captchas via Object Segment Collages
A Non-Markovian Birth-Death Process Approach for Dynamic Multi-Echelon Inventory Optimization of Repairable Spares Under Uncertain Demand
Model Order Reduction Based on Approximate Cross Gramian and Laguerre Series for Linear Input-Output Systems
An Ensemble Learning Approach for Enhanced Classification of Patients With Hepatitis and Cirrhosis
Bi-Level Multi-Objective Planning Model of Solar PV-Battery Storage-Based DERs in Smart Grid Distribution System
Active Thermoelectric Cooling Solutions for Airspace Applications: the THERMICOOL Project
BCGeo: Blockchain-Assisted Geospatial Web Service for Smart Healthcare System
A Model to Enable the Reuse of Metadata-Based Frameworks in Adaptive Object Model Architectures
FlumeRide: Interactive Space Where Artists and Fans Meet-and-Greet Using Video Calls
State of Charge Estimation of Lithium-Ion Battery for Underwater Vehicles Using MM-UKF Under Hierarchical Temperature Compensation
A Novel Algorithm for Initial Cluster Center Selection
Photocurrents Recovery in GaN UV Sensors Using Microheaters at Low Temperatures
A Deep Learning-Based Brain Age Prediction Model for Preterm Infants via Neonatal MRI
Reliability and Modal Analysis of Key Meta-Action Unit for CNC Machine Tool
Perceptual Tone Mapping Model for High Dynamic Range Imaging
Theseus Data Synthesis Approach: A Privacy-Preserving Online Data Sharing Service
Emotion Recognition Related to Stock Trading Using Machine Learning Algorithms With Feature Selection
PD-Like H ∞ Control for Large-Scale Stochastic Nonlinear Systems Under Denial-of-Service Attacks
Maximum Likelihood Estimation of Stochastic Fractional Singular Models
Monocular 3D Object Detection From Comprehensive Feature Distillation Pseudo-LiDAR
Volume Data Denoising via Extended Weighted Least Squares
Thermally Switchable Auxetic Cell Structures for Adaptive Morphing Surfaces: Design, Simulation, and Demonstrator Validation
Microgrid Energy Management With Asynchronous Decentralized Particle Swarm Optimization
Stock Price Prediction Based on Morphological Similarity Clustering and Hierarchical Temporal Memory
SatDetX-YOLO: A More Accurate Method for Vehicle Target Detection in Satellite Remote Sensing Imagery
A Dual-Polarized Magneto-Electric Dipole Antenna for Application to N77/N78 Band
Heuristic Search Inspired Beam Selection Algorithms for mmWave MU-MIMO System With Discrete Lens Array
A Novel CNN-Based Framework for Detection and Classification of Power Quality Disturbances: Exploring Multi-Class Versus Multi-Label Classification
ML-Augmented Optimization of LoRa Antennas for Drone Telemetry
Reverse-Order Multi-Objective Evolution Algorithm for Multi-Objective Observer-Based Fault-Tolerant Control of T-S Fuzzy Systems
Droop Controlled Microgrid With DSTATCOM for Reactive Power Compensation and Power Quality Improvement
A Gray Image Encryption Technique Using the Concept of Water Waves, Chaos and Hash Function
IEEE Access Special Section Editorial: Data-Driven Monitoring, Fault Diagnosis and Control of Cyber-Physical Systems
Licensed Countrywide Full-Spectrum Allocation: A New Paradigm for Millimeter-Wave Mobile Systems in 5G/6G Era
Safe Adaptive Deep Reinforcement Learning for Autonomous Driving in Urban Environments. Additional Filter? How and Where?
"I Think i Discovered a Military Base in the Middle of the Ocean" - Null Island, the Most Real of Fictional Places
Ambient Air Monitoring System With Adaptive Performance Stability
Modern Reflectarray Antennas: A Review of the Design, State-of-the-Art, and Research Challenges
Research on Temperature Characteristics of Pulse Laser Fuze Drive Circuit
Fighter Equipment Contribution Evaluation Based on Maneuver Decision
Design and Test of 500-kV Lightning Protection Insulator
SafeCity: Toward Safe and Secured Data Management Design for IoT-Enabled Smart City Planning
A World-Self Model Towards Understanding Intelligence
A Phase Congruency and Local Laplacian Energy Based Multi-Modality Medical Image Fusion Method in NSCT Domain
Study on Improving Detection Performance of Wildfire and Non-Fire Events Early Using Swin Transformer
Non-Contact Articulated Robot-Integrated Gap and Flushness Measurement System for Automobile Assembly
Parameter Estimation of Convolutional and Helical Interleavers in a Noisy Environment
A Robust Guiding Torque Control Method for Automatic Steering Using LMI Algorithm
Short-Term Electricity Load Forecasting Based on Temporal Fusion Transformer Model
Design of Diode On-/Off-Frequency-Reconfigurable Wearable Antenna for Sub-6 GHz, Millimeter-Wave, and Sub-Terahertz Application
A Safe, Open Source, 4G Connected Self-Flying Plane With 1 Hour Flight Time and All Up Weight (AUW) <300 g: Towards a New Class of Internet Enabled UAVs
Multilingual Source Code Analysis: A Systematic Literature Review
Transient Modeling and Analysis of VSC Based DC Microgrid During Short Circuit Fault
EMO-TS: An Enhanced Multi-Objective Optimization Algorithm for Energy-Efficient Task Scheduling in Cloud Data Centers
User-Centric Cloud RAN: An Analytical Framework for Optimizing Area Spectral and Energy Efficiency
A Fast Method to Measure the Volume of a Large Cavity
F-2D-QPCA: A Quaternion Principal Component Analysis Method for Color Face Recognition
IMed-CNN: Ensemble Learning Approach With Systematic Model Dropout for Enhanced Medical Image Classification Using Image Channels and Pixel Intervals
Hy-SAIL: Hyper-Scalability, Availability and Integrity Layer for Cloud Storage Systems
System Assessment of WUSN Using NB-IoT UAV-Aided Networks in Potato Crops
A New Three-Term Hestenes-Stiefel Type Method for Nonlinear Monotone Operator Equations and Image Restoration
System Development of Calibration-Free 20.7-Bit Chipless RFID Without Iterative Optimization of Tag Configurations
Order-Hiding Range Query Over Encrypted Cloud Data
Cooperative Radio Resource Management in Heterogeneous Cloud Radio Access Networks
Improving the Accuracy of Indoor Object Localization in the Internet of Things Using Recurrent Neural Networks (LSTM) in Challenging Environments
Managing Maintenance Backlogs: An Integrated Multi-Criteria Decision-Making and Optimization Approach
Adaptive Backstepping Control for a Class of Non-Triangular Structure Nonlinear Systems
Cascaded Regional Spatio-Temporal Feature-Routing Networks for Video Object Detection
Motion Estimation From Surface Electromyogram Using Adaboost Regression and Average Feature Values
An Integrated Approach for Criteria Evaluation and Software Maintenance Process Management: Insights From Global Software Development Perspective
Common Thorax Diseases Recognition Using Zero-Shot Learning With Ontology in the Multi-Labeled ChestX-ray14 Data Set
Plant Leaf Identification Using Feature Fusion of Wavelet Scattering Network and CNN With PCA Classifier
Reliability Analysis of EEG Microstate Features in Patients With Major Depressive Disorder at Different Electrode Configurations
Study of the Complex Permittivity of a Polyurethane Matrix Modified by Nanoparticles
Optimizing HVAC Energy Usage in Industrial Processes by Scheduling Based on Weather Data
A Low Voltage Single Phase Online Uninterruptible Power Supply System Based on APFC and Fuzzy PID Algorithm
Advanced Integration-Inspired Process-in-Memory: A Comprehensive Review of Design, Challenges, and Future Prospects
A Multiple-Voting-Based Decoding Algorithm for Nonbinary LDPC-Coded Modulation Systems
A Multiplicative Noises and Additive Correlated Noises Cubature Kalman Filter and Its Application in Quadruped Robot
Fog-Driven Context-Aware Architecture for Node Discovery and Energy Saving Strategy for Internet of Things Environments
Analysis of 5G Base Station RF EMF Exposure Evaluation Methods in Scattering Environments
Identifying and Understanding Student Dropouts Using Metaheuristic Optimized Classifiers and Explainable Artificial Intelligence Techniques
Common-Mode Voltage Mitigation of Dual Three-Phase Voltage Source Inverters in a Motor Drive Application
Thickness and Refractive Index Measurement System for Multilayered Samples
An Ameliorated Multiattack Network Anomaly Detection in Distributed Big Data System-Based Enhanced Stacking Multiple Binary Classifiers
Capacitive Modeling of Cylindrical Surrounding Double-Gate MOSFETs for Hybrid RF Applications
Leveraging ISMOTE-KPCA-STACKING Algorithm for Enhanced Vascular Vertigo/Dizziness Diagnosis and Clinical Decision Support
A Fully Static True-Single-Phase-Clocked Dual-Edge-Triggered Flip-Flop for Near-Threshold Voltage Operation in IoT Applications
A Systematic Review of Compressive Sensing: Concepts, Implementations and Applications
An Energy Model-Based Controller for a Three-Phase Grid-Tied Modular Multilevel Converter
Modeling the Delivery of Coded Packets in D2D Mobile Caching Networks
Spectrum Efficient Joint Frequency Offset and Channel Estimation for Time-Asynchronous Amplify-and Forward Two-Way Relay Networks
Auto-Tuning Controller Using MLPSO With K-Means Clustering and Adaptive Learning Strategy for PMSM Drives
A Particle Swarm Optimized Learning Model of Fault Classification in Web-Apps
Neural Network-Based Video Compression Artifact Reduction Using Temporal Correlation and Sparsity Prior Predictions
Improving Cell Nuclei Segmentation in Pathological Tissues Using Self-Supervised Regression Method
Hardware Implementation for Haze Removal With Adaptive Filtering
An Overview on Electrodynamic Bearings
Comparison of Two Design Methods of EMI Filter for High Voltage Power Supply in DC-DC Converter of Electric Vehicle
HunEmBERT: A Fine-Tuned BERT-Model for Classifying Sentiment and Emotion in Political Communication
Pareto Optimal Allocation of Flexible Fault Current Limiter Based on Multi-Objective Improved Bat Algorithm
A Study of Reduced Torque Compensation Method Under Temperature Variation Based on Single Torque-Current Lookup Table
NE-nu-SVC: A New Nested Ensemble Clinical Decision Support System for Effective Diagnosis of Coronary Artery Disease
A Permissioned Blockchain-Based Identity Management and User Authentication Scheme for E-Health Systems
Discriminative Regression With Latent Label Learning for Image Classification
Joint Beamforming, Scheduling, Trajectory, and Transmit Power Optimization in UAV-Assisted ISAC Systems for Information Freshness
A Flexible Miniaturized Wideband Branch-Line Coupler Using Shunt Open-Stubs and Meandering Technique
ECG-Based Biometrics Using a Deep Network Based on Independent Component Analysis
Chest X-Ray Outlier Detection Model Using Dimension Reduction and Edge Detection
A Task-Resource Mapping Algorithm for Large-Scale Batch-Mode Computational Marine Hydrodynamics Codes on Containerized Private Cloud
Multi-Objective Optimization Technique Based on QUBO and an Ising Machine
Trace Ratio Criterion Based Large Margin Subspace Learning for Feature Selection
A Survey of Electrical Fire Causes Assessment Technology
Malicious UAV Detection Over Rician Fading Channel: Performance Analysis
Profit Maximization in Mobile Crowdsourcing: A Competitive Analysis
Model Predictive Virtual-Flux Control of Three-Phase Vienna Rectifier Without Voltage Sensors
Spatial Separation of Closely-Located Users in Measured Massive MIMO Channels
GAN-Based Data Augmentation for Fault Diagnosis and Prognosis of Rolling Bearings: A Literature Review
Position, Navigation, and Timing (PNT) Through Low Earth Orbit (LEO) Satellites: A Survey on Current Status, Challenges, and Opportunities
A New RIS Architecture With a Single Power Amplifier: Energy Efficiency and Error Performance Analysis
Feasibility Study of Using the Housing Cases of Implantable Devices as Antennas
Neurotechnology in Gaming: A Systematic Review of Visual Evoked Potential-Based Brain-Computer Interfaces
Depth-L Nyquist (M) Filters and Biorthogonal Partners
A New Single Point Preview-Based Human-Like Driver Model on Urban Curved Roads
RoBERTa-GCN: A Novel Approach for Combating Fake News in Bangla Using Advanced Language Processing and Graph Convolutional Networks
A Comprehensive Non-Ideal Steady-State Analysis of a Threefold Operation Mode Interleaved-Based DC-DC Converter
12-Port 5G Massive MIMO Antenna Array in Sub-6GHz Mobile Handset for LTE Bands 42/43/46 Applications
Supercapacitors: Electrical Characteristics, Modeling, Applications, and Future Trends
Fault-Tolerant Performance of a Three-Phase Dual Armature-Winding Doubly Salient Brushless DC Generator
A Review of Passenger Digital Information Privacy Concerns in Smart Airports
Utilization-Oriented Spectrum Allocation in an Underlay Cognitive Radio Network
Affine Projection Algorithm Based on Least Mean Fourth Algorithm for System Identification
Workload Orchestration in Multi-Access Edge Computing Using Belief Rule-Based Approach
Fast Counterfeit RFID Tags Detection With Slot Constraints
Resource-Efficient Path-Following Control for a Self-Driving Car in a Networked Control System
Improved Resource Allocation Model for Reducing Interference Among Secondary Users in TV White Space for Broadband Services
On the Performance of PDMA With Decode-and-Forward Relaying in Downlink Network
Transformer Based Memory Network for Sentiment Analysis of Web Comments
Measurement-Based Characterization and Modeling for Low-Altitude UAV Air-to-Air Channels