Volume 18 (2022) Guest Editorial: Smart Environments/Editorial Multi-Connectivity in 5G and Beyond Non-Terrestrial Networks/Open Call Articles Data-aided Weight with Subcarrier Grouping for Adaptive Array Interference Suppression/Open Call Articles BW-TOPSIS: A Hybrid Method to Evaluate Software Testing Techniques/Open Call Articles Finite Radon Transform as Subcarriers Mapping Technique for OFDM System/Open Call Articles New Graphical Software Tool for Creating Cause-Effect Graph Specifications/Open Call Articles Investment of Cyclic Prefix to Reduce the Peak-to-Average Power Ratio and Recover Original Phases Blindly/Open Call Articles In Search of Micromodels: Black-box Evaluation of Spatio-temporal Models in Normal and Extreme Conditions/Open Call Articles Dynamic Trust-Based Device Legitimacy Assessment Towards Secure IoT Interactions/Open Call Articles Extending the Lifetime of Wireless Sensor Networks Based on an Improved Multi-objective Artificial Bees Colony Algorithm/Open Call Articles Design and Implementation of a Fully Flexible Cognitive Radio Modem/Open Call Articles Beam and Channel Tracking for 5G Communication Systems Using Adaptive Filtering Techniques: A Comparison Study/Open Call Articles A Miniaturized Printed Circuit CRLH Antenna-based Hilbert Metamaterial Array /Open Call Articles A New Analytical Model for SIM–OFDM Contradicts the Previously Claimed Features/Open Call Articles Multi-Criteria Service Selection Agent for Federated Cloud/Open Call Articles Calculation of Complex Power Generated by a Transmitting Thin Wire Antenna Radiating above a Lossy Half-space/Open Call Articles A Study of Vulnerability Identifiers in Code Comments: Source, Purpose, and Severity/Open Call Articles A Comparative Analysis of Agile Teamwork Quality Measurement Models/Open Call Articles Security Incident Response Automation for xPON Networks/Open Call Articles Assigning Test Priority to Modules Using Code-Content and Bug History/Open Call Articles A Blockchain Application Prototype for the Internet of Things/Open Call Articles Intelligent Pricing Model for Task Offloading in Unmanned Aerial Vehicle Mounted Mobile Edge Computing for Vehicular Network/Open Call Articles Naming the Identified Feature Implementation Blocks from Software Source Code/Open Call Articles Enforcing Full Arc Consistency in Asynchronous Forward Bounding Algorithm/Open Call Articles A Distributed Asynchronous Transmission Access Strategy for Optical Single-Hop LANs: An Analytical Performance Study/Open Call Articles New RPL Protocol for IoT Applications/Open Call Articles N-gram Based Croatian Language Network: Application in a Smart Environment/Open Call Articles Remote Pumping in Point to Multi-point Networks/Open Call Articles On the Applicability of Numerical Quadrature for Double Surface Integrals at 5G Frequencies/Open Call Articles State Transition Analysis of GSM Encryption Algorithm A5/1/Open Call Articles OFDM Channel Estimation Along with Denoising Approach under Small SNR Environment using SSA/Open Call Articles A Novel Strategy for Improving the Counter Propagation Artificial Neural Networks in Classification Tasks/Open Call Articles Identifying Causal Structures from Cyberstalking: Behaviors Severity and Association/Open Call Articles Leveraging Natural Language Processing to Analyse the Temporal Behavior of Extremists on Social Media/Special Issue on Smart Environments A Microservices Architecture based on a Deep-learning Approach for an Innovative Fruition of Art and Cultural Heritage/Special Issue on Smart Environments