1. From the Editor-in-Chief

   • Kimon P. Valavanis

   Editorial 07 September 2019 Pages: 449 - 449

2. Evaluation of the Disturbance Rejection Performance of an Aerial Manipulator

   • Mete Aydemir
   • Kutluk Bilge Arıkan

   OriginalPaper 13 April 2019 Pages: 451 - 469

3. Drone Delivery Scheduling Optimization Considering Payload-induced Battery Consumption Rates

   • Maryam Torabbeigi
   • Gino J. Lim
   • Seon Jin Kim

   OriginalPaper 10 May 2019 Pages: 471 - 487

4. Ground Risk Map for Unmanned Aircraft in Urban Environments

   • Stefano Primatesta
   • Alessandro Rizzo
   • Anders la Cour-Harbo

   OriginalPaper 09 May 2019 Pages: 489 - 509

5. Risk Areas Determination for Autonomous- and Semi-autonomous Aerial Systems Considering Run-Time Technical Reliability Assessment

   • Georg Hägele
   • Dirk Söffker

   OriginalPaper 11 July 2019 Pages: 511 - 529

6. Monocular Trail Detection and Tracking Aided by Visual SLAM for Small Unmanned Aerial Vehicles

   • André Silva
   • Ricardo Mendonça
   • Pedro Santana

   OriginalPaper 16 May 2019 Pages: 531 - 551

7. An Efficient Approach for Graph-Based Fault Diagnosis in UAVs

   • Georgios Zogopoulos-Papaliakos
   • Kostas J. Kyriakopoulos

   OriginalPaper 19 July 2019 Pages: 553 - 576

8. Fast 3D Collision Avoidance Algorithm for Fixed Wing UAS

   • Zijie Lin
   • Lina Castano
   • Huan Xu

   OriginalPaper 29 June 2019 Pages: 577 - 604

9. A UAV Guidance System Using Crop Row Detection and Line Follower Algorithms

   • Maik Basso
   • Edison Pignaton de Freitas

   OriginalPaper 09 March 2019 Pages: 605 - 621

10. Search and Localization of a Weak Source with a Multi-robot Formation

    • Alessandro Renzaglia
    • Lara Briñón-Arranz

    OriginalPaper 03 April 2019 Pages: 623 - 634

11. Model Predictive Fault Tolerant Control for Omni-directional Mobile Robots

    • George C. Karras
    • George K. Fourlas

    OriginalPaper 27 May 2019 Pages: 635 - 655

12. Adaptive Neural Network Control of Underwater Robotic Manipulators Tuned by a Genetic Algorithm

    • Tony Salloom
    • Xinbo Yu
    • Okyay Kaynak

    OriginalPaper 20 March 2019 Pages: 657 - 672

13. Research on Synergy Pursuit Strategy of Multiple Underwater Robots

    • Qingyong Jia
    • Hongli Xu
    • Xisheng Feng

    OriginalPaper 24 April 2019 Pages: 673 - 694

14. New Adaptive Segmented Wheel for Locomotion Improvement of Field Robots on Soft Terrain

    • Arman Mardani
    • Saeed Ebrahimi
    • Khalil Alipour

    OriginalPaper 18 July 2019 Pages: 695 - 717

15. Zoning a Service Area of Unmanned Aerial Vehicles for Package Delivery Services

    • Inkyung Sung
    • Peter Nielsen

    OriginalPaper 10 June 2019 Pages: 719 - 731

16. Head-synced Drone Control for Reducing Virtual Reality Sickness

    • Kandai Watanabe
    • Masaki Takahashi

    OriginalPaper 05 July 2019 Pages: 733 - 744