In manufacturing systems, material transport plays a key role for production process efficiency. Because of their advantages over other material handling systems such as conveyors and robots, AGVs are widely used in flexible manufacturing systems. The scheduling of several AGVs in a non-conflicting manner is a complicated problem, especially when the AGV system is bi-directional. In fact, many ...

Automatic syntactic analysis is simplified by disengaging the grammatical rules, by means of a parsing logic, from the computer routines that apply them. A case in point is the John Cocke logic. It iterates on five simple parameters and finds all structures permitted by the grammar, thus testing the rules, which can then be changed without changing the routines. The rules themselves need not be...

Over the past three decades, China’s economy has witnessed remarkable growth, with an average annual growth rate over 9%. However, China also faces great challenges to balance this spectacular economic growth and continuously increasing energy use like many other economies in the world. With the aim of designing effective energy and environmental policies, policymakers are required to master th...

This paper proposes a fast tree join scheme to provide seamless multicast handover in the mobile networks based on the Fast Mobile IPv6 (FMIPv6). In the existing FMIPv6-based multicast handover scheme, the bi-directional tunnelling or the remote subscription is employed with the packet forwarding from the previous access router (AR) to the new AR. In general, the remote subscription approach is...

Abstract—This paper introduces a method for canceling the parasitic capacitance of integrated common mode (CM) filter by optimizing the layout of ground winding. Firstly, the CM filter with positive or negative coupling between the ground and inductor winding is researched, respectively. Then, the two coupling polarizes are combined to form the bi-directional coupling, simulation and measured r...

In this paper, we present a robust timing offset estimation method using subautocorrelation functions for uniand bi-directional chirp signals. The presented timing offset estimator is designed to be applied with a generalized chirp signal sequence, which use unior bi-directional chirp symbols. Using the conjugate property of the chirp signal, the sub-autocorrelation functions are generated to b...

Abstract. We discuss an optimal method for the computation of linear combinations of elements of Abelian groups, which uses signed digit expansions. This has applications in elliptic curve cryptography. We compute the expected number of operations asymptotically (including a periodically oscillating second order term) and prove a central limit theorem. Apart from the usual right-to-left (i.e., ...

In Model-Driven Engineering, the potential advantages of using bidirectional transformations are largely recognized. Despite its crucial function, bidirectionality has somewhat limited success also because of the ambivalence concerning non-bijectivity. In fact, in certain situations more than one admissible solution is in principle possible, despite most of the current languages generate only o...

Arc consistency plays a central role in solving Constraint Satisfaction Problems. This is the reason why many algorithms have been proposed to establish it. Recently, an algorithm called AC2001 and AC3.1 has been independently presented by their authors. This algorithm which is considered as a refinement of the basic algorithm AC3 has the advantage of being simple and competitive. However, it d...

Path planning is a fundamental aspect of mobile robots and autonomous systems. Methods path are used in robotics to create for robot or system follow from starting position goal one while avoiding obstacles satisfying any additional conditions. There many different methods plan the path, including probabilistic methods, heuristics-based approaches, optimization-based methods. In this paper, we ...