Challenges persist in nonholonomic robot navigation for dynamic environments. This paper presents a framework for nonholonomic robot navigation in dynamic environment based on the model of Generalized Velocity Obstacles (GVO). The idea of velocity obstacles has been well studied and developed for obstacle avoidance since proposed in 1998. Though proved to be successful, most studies assume equa...

BACKGROUND Although anti-neutrophil cytoplasmic antibodies [ANCA] are frequently found in patients diagnosed with idiopathic pulmonary fibrosis [IPF], current guidance does not recommend serologic testing for vasculitis. CASE PRESENTATION A 71-year old Caucasian male, diagnosed with IPF three years earlier, presented with rapidly progressive glomerulonephritis. ANCA were found both in current...

The clinical report of a 31-year-old man who developed acute renal failure due to idiopathic rapidly progressive glomerulonephritis is presented. Intravenous pulse methylprednisolone therapy in combination with cyclophosphamide resulted in marked improvement in renal function. The literature dealing with pulse therapy is reviewed.

For an environment to be well suited for wheelchair use not only should it be sufficiently clear of obstacles so that the wheelchair can navigate it, it should also be properly designed so that critical devices such as light switches can be reached by the hand of the wheelchair user. Given a goal location, explicitly calculating a path of the wheelchair and the person sitting in it so that they...

This paper presents several modifications to the basic rapidly-exploring random tree (RRT) search algorithm. The fundamental idea is to utilize a heuristic quality function to guide the search. Results from a relevant simulation experiment illustrate the benefit and drawbacks of the developed algorithms. The paper concludes with several promising directions for future research.