1. From the Editor-in-Chief

   • Kimon P. Valavanis

   Editorial 20 February 2009 Pages: 107 - 107

2. Dual FastSLAM: Dual Factorization of the Particle Filter Based Solution of the Simultaneous Localization and Mapping Problem

   • D. Rodriguez-Losada
   • P. San Segundo
   • L. Pedraza

   OriginalPaper 19 December 2008 Pages: 109 - 134

3. Lyapunov-Based Nonlinear Disturbance Observer for Serial n-Link Robot Manipulators

   • Amin Nikoobin
   • Reza Haghighi

   OriginalPaper 11 December 2008 Pages: 135 - 153

4. Unified Behavior Framework for Reactive Robot Control

   • Brian G. Woolley
   • Gilbert L. Peterson

   OriginalPaper 02 December 2008 Pages: 155 - 176

5. Performance Evaluation of Direct Heuristic Dynamic Programming using Control-Theoretic Measures

   • Lei Yang
   • Jennie Si
   • Armando A. Rodriguez

   OriginalPaper 15 January 2009 Pages: 177 - 201

6. Inertially Aided Visual Odometry for Miniature Air Vehicles in GPS-denied Environments

   • Bryce B. Ready
   • Clark N. Taylor

   Unmanned Systems Paper 04 December 2008 Pages: 203 - 221

7. System Identification and Discrete Nonlinear Control of Miniature Helicopters Using Backstepping

   • Ioannis A. Raptis
   • Kimon P. Valavanis
   • Wilfrido A. Moreno

   Unmanned Systems Paper 04 December 2008 Pages: 223 - 243