This paper describes a novel idea of path planning for multiple UAVs (Unmanned Aerial Vehicles). The path planning ensures safe and simultaneous arrival of the UAVs to the target while meeting curvature and safety constraints. Pythagorean Hodograph (PH) curve is used for path planning. The PH curve provides continuous curvature of the paths. The offset curves of the PH paths define safety margi...

The use of primary eeects in planning is an eeective approach to reducing search. The underlying idea of this approach is to select certain \important" eeects among the eeects of each operator and to use an operator only for achieving its important eeects. In the past, there has been little analysis of planning with primary eeects and few experimental results. We provide empirical and analytica...

In this paper we present a framework called PPSB for combining reinforcement learning and planning to solve sequential decision problems. Our aim is to show that reinforcement learning and planning complement each other well, in that each can take advantage of the strengths of the other. PPSB uses partial action specifications to decompose sequential decision problems into tasks that serve as a...

The co-operation among a set of robots is for the purpose of achieving a common goal. The intent of cooperation and objective of effective co-operation would set up a functional relationship among the co-operative robots. This paper presents a new trajectory planning scheme based on inter-relationship that has to exist in achieving a goal in cooperation. Apart from conceptualization of the sche...

Traditional AI planning systems have focussed on batch planning, where an entire plan for achieving a goal is generated. An alternative approach is to select only the next action, a technique that has been used in situated planners, and, more recently, has been eeectively applied to traditional AI planning domains. In this paper, we present an action selection framework sensitive to resource li...

Since the 1980s, administrative reform in a number of developing countries has been directed at achieving decentralisation of planning through the use of information systems. These experiments have not led to any significant improvement in planning and monitoring of development programmes. In this paper, we argue that a closer look at different approaches to decentralisation is useful in order ...

Comprehensive transportation network layout planning should pay more attention to the coordination and connection of various means of transport. In the course of layout planning, it is very necessary to consider all the views of experts from different domains. Based on analyzing the procedure and the characteristics of the comprehensive transportation network layout planning, this paper firstly...

Various aspects of trial design and planning for clinical testing of antiemetic therapies administered to cancer patients are considered. It is generally felt that a randomized double-blind parallel-arm design is the best. Ways of achieving adequate power of such studies are discussed briefly, as is the need for previous identification of primary and secondary end-points. Finally, summary recom...

Based on triangular meshes, an accurate path planning algorithm with the commonly used four laying angles in the robotic fibre placement (RFP) is proposed. The initial paths with different laying angles are firstly produced. Along certain directions, the offset curves are then obtained by a method of variable offset distances which are affected by the placement error and the number of fibre tow...