Journal of Robotics, Networking and Artificial Life

In a standard Evolutionary Algorithms (EAs), one uses the same rate for mutations from bit 1 to bit 0 and its reverse direction. There are many reports that the asymmetric mutation model is a very powerful strategy in EAs to obtain better solutions more efficiently. In this paper, we report stochastic...

To develop a robot that understands human feeling, we propose a method for recognizing facial expressions. A video was analyzed by thermal image processing and the feature parameter of facial expression, which was extracted in the area of the mouth and jaw by a two-dimensional discrete cosine transform....

This research has implemented a prototype of a supporting tool to generate testing communication diagram. The testing communication diagram helps a developer to understand where the software system is tested by a large quantity of test cases written in text, and it is generated by adding the information...

This paper investigates an attitude reorientation control scheme of spacecraft, considering attitude forbidden zone and external disturbances. A novel potential barrier function is proposed with an attitude constraint term and a dynamical scaling term. Here the dynamical scaling term is synthesized with...

We investigated the postural sway in response to local vibratory stimulation applied to young, middle-aged and elderly people in the standing position. For this purpose we developed a variable-frequency vibratory stimulation device and measured the postural sway using a gravicorder. As a result, when...

Error recovery in robotic tasks is explored to enable robots to be used for complicated tasks. The authors’ error recovery processes make use of the concepts of both task stratification and error classification. In this paper, the reusability of planning in error recovery is verified by using the typical...

In this study, the synchronized response in the chaotic cellular neural network for a grayscale visual stimulus was investigated in the viewpoint of neural coding. Simple gradation patterns were used as visual stimuli and the synchronized response was analyzed by the correlation of the spike firing times....

This paper presents a distributed terminal (finite-time) backstepping consensus control for multi-agent Euler-Lagrange systems. Terminal virtual error surfaces and virtual controls are proposed to guarantee the finite-time error consensus and formation convergence of a group of one-leader and multi-follower...

Currently, in the field of human-robot interaction (HRI), robots have a problem that can only interact the same at all times with humans. In this paper, therefore, we introduce the concept called a dividual and build a model of the dividual to grow through interactions with others. In addition, using...

Multiagent systems, where many agents work together to achieve their objectives, and cooperative behaviors between agents need to be realized, have been widely studied In this paper, a new reinforcement learning framework considering the concept of “Symbiosis” in order to represent complicated relationships...

Collaboration is one of the effective approaches that help us to share knowledge together and exchange ideas within team members. Sometimes, helpful new knowledge that is not held by the members emerges as a result of the collaboration. Such knowledge often contributes to get prime solutions in the collaboration...

This paper deals with the verification of a narrative discourse system. The system automatically produces a variety of discourse structures from an inputted story structure through an iterative mutual action between a narrator and narratee mechanisms. We analyze a series of generated discourse structures...

In our previously reported system, after the first music recommendation process using collaborative filtering was terminated, the second recommendation process based on the scores for impression words finds the most similar music to the successfully recommended music among music that has not yet been...

At the present time, mobile devices such as tablet-type PCs and smart phones have widely penetrated into our daily lives. Therefore, an authentication method that prevents shoulder surfing is needed. We are investigating a new user authentication method for mobile devices that uses surface electromyogram...

This paper presents a robot swarm model to enclose a target. The robots use information of the target and each of their neighbors. Every robot has its own, standard torch-like signal emitter and they can observe the sum of the intensity of their torches. In this paper, the robots identify their nearest...