Channel assignment mechanisms in dynamic spectrum access (DSA) networks are often designed without accounting for adjacent-channel interference (ACI) between different secondary users (SUs). To prevent such interference, guard-bands are needed between channels that are assigned to different SUs. However, introducing guard-bands restricts the spectrum efficiency. In this paper, we consider the p...

In this article, we discuss deterministic annealing and chaotic annealing, when doubly constrained network (DCN) is applied to quadratic assignment problem. The two algorithms are compared in several aspects; they are bifurcation structures, obtained solutions, and parameter determination.

In this paper, to cope with the stochastic dynamic (or multi-period) problem, two new quadratic assignment-based mathematical models corresponding to the dynamic and static approaches are developed. The product demands are presumed to be dependent uncertain variables with normal distribution having known expectation, variance, and covariance that change from one period to the next one, randomly...

In this paper we present a dynamic assignment language which extends the dynamic predicate logic of Groenendijk & Stokhof [1991: 39{100] with assignment and with generalized quanti ers. The use of this dynamic assignment language for natural language analysis, along the lines of o.c. and [Barwise, 1987: 1{29], is demonstrated by examples. We show that our representation language permits us to t...

This paper deals with the problem of channel assignment in mobile communication systems. In particular, we propose an alternative approach to solving the dynamic channel assignment (DCA) problem through a form of real-time reinforcement learning known as Q-learning. Instead of relying on a known teacher, the system is designed to learn an optimal assignment policy by directly interacting with t...

A number of emerging dynamic traffic analysis applications, such as regional or statewide traffic assignment, require a theoretically rigorous and computationally efficient model to describe the propagation and dissipation of system congestion with bottleneck capacity constraints. An open-source light-weight dynamic traffic assignment (DTA) package, namely DTALite, has been developed to allow a...

Forum discussions have been utilised widely as a means of facilitating learning interaction and social-knowledge construction in online learning. Much research has conducted on the instructional interventions that benefit asynchronous discussions. Role-playing, or assigning roles to discussants, proven effective promoting interactivity knowledge context both face-to-face However, rotating thous...

This paper addresses a theoretical issue related to combined dynamic traffic assignment and signal control under conditions of congestion through a brief review of previous research and the discussion on interaction between dynamic traffic assignment and signal control. The dynamic characteristics of the interaction are approached using a differential game modeling approach here to formulate th...

In this paper, a zero-pole assignment approach is proposed for disturbance attenuation in dynamic fault detection observer design. The properties of dynamic observers are analysed and it is shown that the poles of a dynamic observer can be shifted and the additional zeros can be assigned arbitrarily. Then, a novel pole-zero assignment approach is proposed and its application to a continuous sys...