Introduction on Wireless Sensor Networks Issues and Challenges in Current Era.- Intelligent applications of WSN in the world: A Technological and Literary Background.- Medium Access Control Protocols For Wireless Sensor Networks.- Performance of Distance and Energy based modified threshold LEACH.- Medium Access Control Protocols for Mission Critical Wireless Sensor Networks.- QoS Routing for Data Gathering with RPL in WSNs.- An Effective Analysis and Performance Investigation of Energy Heterogeneity in Wireless Sensor Networks.- A Firefly Optimization for Maximizing the connectivity in Wireless Sensor Network.- Resource Security Monitoring System in Wireless Industrial Internet of Things.- Syloc: Hybrid Key Generation In Sensor Network.- Diffie-Hellman Algorithm Pedestal to Authenticate Nodes in Wireless Sensor Network.- Privacy Aware prevention of Sybil Attack in Vehicular Ad Hoc Networks.- Key Management Schemes in Internet of Things: A Matrix Approach.- Black Hole Attack and Its Security Measure in Wireless Sensors Networks.- Detection and Tracking of Mobile Intruder in Harsh Geographical Terrains using Surveillance Wireless Sensor Networks.- Opportunities and Challenges with WSN's in Smart Technologies: A smart Agriculture Perspective.- Application of Supervised Learning Approach for Target Localization in Wireless Sensor Network.- A Review on Hybrid WSN-NGPON2 Network for Smart World.- Internet of Things in Forensics Investigation in Comparison to Digital Forensics.- A Review on The Artificial Intelligence Algorithms for The Recognition of Activities of Daily Living Using Sensors in Mobile Devices.