Artificial Life and Robotics

The new influenza A virus H1N1-pdm is spreading all over the world, including Japan. Since most people are not immunized against this new influenza virus, it is spreading very quickly. Currently, we have two options for the prevention of this disease, ...

We present path-planning techniques for a multiple mobile robot system. The mobile robot has the shape of a cylinder, and its diameter, height, and weight are 8 cm, 15 cm, and 1.5 kg, respectively. The controller of the mobile robot is an MCS-51 chip, ...

This article describes a multilevel multisensor-based security system that has multiple interfaces to be applied in an intelligent home. The security system contains four levels. There is a passive detection level, an active detection level, a system ...

This article develops a gas detection module for the intelligent home. The module uses eight gas sensors to detect the environment of the home and building. The gas sensors of the module have an NH₃ sensor, an air pollution sensor, an alcohol sensor, an ...

Facial expression recognition has recently become an important research area, and many efforts have been made in facial feature extraction and its classification to improve face recognition systems. Most researchers adopt a posed facial expression ...

Space weather can be predicted using data from satellites. For example, the condition of high-energy electrons at geostationary orbit is vital in providing warnings for spacecraft operations. We investigate an adaptive predictor based on intelligent ...

An adaptive sensor network for home intrusion detection is proposed. The sensor network combines profile-based anomaly detection and adaptive information processing based on hidden Markov models (HMM) that allow the system to train and tune the profiles ...

The stable marriage problem (SMP) seeks matchings between n women and n men which would result in stability, and not lead to divorce or extramarital affairs. We have introduced a network consisting of nodes which represent matchings, and links between ...

We propose an artificial intelligence membrane to detect network intrusion, which is analogous to a biological membrane that prevents viruses from entering cells. This artificial membrane is designed to monitor incoming packets and to prevent a ...

Reinforcement learning (RL) attracts much attention as a technique for realizing computational intelligence such as adaptive and autonomous decentralized systems. In general, however, it is not easy to put RL to practical use. The difficulty includes ...

For centuries, the study of prime numbers has been regarded as a subject of pure mathematics in number theory. Recently, this vision has changed and the importance of prime numbers has increased rapidly, especially in information technology, e.g., ...

We propose an analog-digital circuit for detecting the movement of an object. The proposed unit circuit is a simple structure since the digital part of the circuit is constructed with only one NOT circuit and one NOR circuit. The measured results on a ...

We have proposed an analog motion detection circuit based on a biological vision system. A charge coupled device (CCD) camera was used as the input in order to obtain an input image. By using the CCD camera, it is possible to detect the movement of an ...

A plus and minus switching power supply is needed for many applications, for example an audio power supply. Since the changes in the output voltage of such loaded power amplifiers are large, the voltage of the power supply is also subject to large ...

Nonlinear polynomial NARX (nonlinear autoregressive with exogenous inputs) model identification often faces the problem of the huge size of the candidate pool, which makes the "wrapper" structure selection algorithm worked at low efficiency. In this ...

This article describes a vision-based auto-recharging system that guides a mobile robot moving toward a docking station. The system contains a docking station and a mobile robot. The docking station contains a docking structure, a control device, a ...

This article considers what kind of partial agency can be implemented for objects to bring about better agencies for interacting with humans. We humans have the ability to inform our fellows about our intentions, internal states, and requirements ...

We have developed a rehabilitation support system that assists exercise training in order to reduce the physical load of therapists. Here, we propose a muscle fatigue evaluation method to decide the appropriate momentum for each patient. Many studies on ...

This article presents the development of a timberjack-like pruning robot. The climbing principal is an imitation of the climbing approach of timberjacks in Japan. The robot's main features include having its center of mass outside the tree, and an ...

This article presents the control method for a 5-fingered artificial hand using electromyography (EMG) signals. Our targeted artificial hand is driven by pneumatic actuators to reduce its weight, and we use ON/OFF solenoid valves instead of electro ...

In this article, we consider the swing-up and linear quadratic regulator (LQR) stabilization of a rotary inverted pendulum. A DC motor rotates a rigid arm. At the end of the rigid arm is a joint with a pendulum suspended from it. Two encoders check the ...

With the rapid development of the economy, environmental pollution has become one of the major problems in coastal areas and in cities along rivers. Real-time observations of the water quality along rivers have been considered to be an efficient way to ...

Recently, many studies on assist robots have been conducted in which the development of a unique system is required to support elderly people, physically handicapped people, and/or care givers. One typical system is called the assist suit, which has ...

The quantum adiabatic algorithm is a method of solving computational problems by evolving the ground state with a slowly varying Hamiltonian to reach the required output state. This article proposes a new variation on the method for the phase functions ...

Since the control methods of a transport system between processing machines are specialized for each layout of the system, it is difficult to design prompt schedules and control logic for new complicated systems, especially in cases of machine faults or ...

Recently, many studies on swarm robotics have been conducted in which the aim seems to be the realization of an ability to perform complex tasks by cooperating with each other. Future progress and concrete applications are expected. The objective of ...

In genetic algorithms (GAs), is it better to use binary encoding schemes or floating point encoding schemes? In this article, we try to tackle this controversial question by proposing a novel algorithm that divides the computational power between two ...