mobile robot navigation is one of the basic problems in robotics. in this paper, a new approachis proposed for autonomous mobile robot navigation in an unknown environment. the proposedapproach is based on learning virtual parallel paths that propel the mobile robot toward the trackusing a multi-layer, feed-forward neural network. for training, a human operator navigates themobile robot in some...

designing the self-balancing two-wheeled mobile robots and reducing undesired vibrations are of great importance. for this purpose, the majority of researches are focused on application of relatively complex control approaches without improving the robot structure. therefore, in this paper we introduce a new two-wheeled mobile robot which, despite its relative simple structure, fulfills the req...

In this paper, we propose a new approach to model irreversibility in robotic drive chains. Actually, some types of gears such as worm gears have an efficiency which varies according to the power flow direction. The irreversibility appears when the efficiency tends to zero in one direction only, usually, from the load to the motor. The proposed methodology consists of using a state machine to de...

Thefield of robotics is in rapid development. A s robots become cheaper to build. new applications involving many robot systems can be envisioned One reason for using many robots is to achieve robustness. Having mony robots, however, does not ensure robustness. A control stratea and robot behaviors must be engineered to incorporate robustness into the system. Swam intelligence based approaches ...

introduction ophthalmomyiasis is a rare disorder that is caused by invasion of dipterous larvae to necrotic tissues. case presentation an 80-year-old woman with invasive basal cell carcinoma (bcc) presented anabnormal growth of worm in her eye. she had ophthalmomyiasis caused by lucilia sericata larva in here nucleated eye. l. sericata is common all over the temperate and tropical regions, main...

Acknowledgements I wish to express my most sincere gratitude to my supervisor Prof. Luc Vandendorpe for granting me the opportunity of carrying out this study. I thank him for his professionalism, encouragement and experienced guidance. My deepest thanks to Prof. Josef Kittler from the Centre for Vision, Speech and Signal Processing at the University of Surrey (UK), for his valuable advice and ...

A 69 year old female presented in 2005, with painful swelling and discharging sinus of right ankle of 1 week duration. She was under treatment for bone marrow confirmed myelodysplastic syndrome. On examination she had pallor, swelling of the right ankle and a discharging sinus on the lateral aspect with a thick-thread like structure coming out of it. The thick-thread like structure was initiall...