In this paper we introduce a neural network model of self-organization. This model uses a variation of Hebb rule for updating its synaptic weights, and surely converges to the equilibrium status. The key point of the convergence is the update rule that constrains the total synaptic weight and this seems to make the model stable. We investigate the role of the constraint and show that it is the ...

Abstract This paper presents a joint–coordinate adjoint method for optimal control of multi-rigid-body systems. Initially formulated as set differential-algebraic equations, the system is brought into minimal form by projecting original expressions joint’s motion and constraint force subspaces. Consequently, cumbersome partial derivatives corresponding to joint-space equations are avoided, appr...

“Heuristic synergy” refers to improvements in search performance when the decisions made by two or more heuristics are combined. This paper considers combinations based on products and quotients, and then a newer form of combination based on weighted sums of ratings from a set of base heuristics, some of which result in definite improvements in performance. Then, using recent results from an fa...

the aim of this study is to carry out an empirical study of constraint factors in recreational sporting activities. more specifically it tests the model of constraints (intra-personal, interpersonal, and structural), as proposed by crawford et al. (1991), and its relationship with actual participation levels in specific recreational sports activities in iran. although there is a growing body o...

the realization optimality theory is a recent development in the original optimality theory which is proposed to deal with morphological issues especially the inflectional ones. its main idea is to consider the morphological realization rules as ranked violable language-specific constraints that control the realization processes and provide phonological information of grammatical morphemes. thi...

Recognizing structure of human body is important for modeling human motion. Human body is usually represented as an articulate model, which consists of the rigid parts and the joint points between them. The structure of the human body is specified by the joint points. In this paper we propose a novel method for estimating the location of joint points from successive volume data. Our joint point...

Cellular networks are now rapidly evolving to the renewable heterogeneous network (HetNet) architectures, where a mixture of macro base stations (BSs) and small cell BSs coexist. Particularly, these BSs are partly-powered or self-powered by renewable energy sources (RES). In this context, joint user association and resource allocation is challenging. In addition, wireless backhaul is rapidly be...

We introduce CAT, a constraint-aware teleoperation method that can track continuously updating 6-DOF end-effector goals while avoiding environment collisions, self-collisions, and joint limits. Our method uses sequential quadratic programming to generate motion trajectories that obey kinematic constraints while attempting to reduce the distance to the goal with each step. Environment models are...