Natural 3D images can be generated by displaying high-density directional images. In order to display real 3D scenes, a 3D camera technique which generates high-density directional images of real 3D scenes is required. The most promising method is to generate them by using an interpolation algorithm from multiple images captured by horizontally aligned multiple cameras. In this study we examine...

The migration of individual Ga atoms on the technologically important GaAs~001!-(234) reconstructed surface has been studied as a function of substrate temperature and As4 pressure using a combined molecular beam epitaxy and scanning tunneling microscope ultrahigh vacuum multichamber facility. We have deposited 10% of a plane of Ga onto a GaAs~001! surface with a low defect density (,1% ! and w...

due to their advantages, omni-directional mobile robots have found many applications especially in robotic soccer competitions. however, omni directional navigation system, omni-vision system and kicking mechanism in such mobile robots have not ever been combined. this situation brings the idea of a robot with no head direction into existence, a comprehensive omni directional mobile robot. such...

Many ad hoc networks including military networks have a wide range of deployment densities Further they exhibit mobility patterns that induce continual and rapid density changes for instance due to the con uence and dispersion of troops Most ex isting ad hoc networking protocols tacitly or explicitly ignore density variations In this paper we discuss the performance degradation caused by densit...

Biometrics is used for authentication purpose. Among the various types of biometrics, fingerprint is the most widely accepted biometrics. Biometric systems have several advantages when compared to classical methods such as passwords. Biometric system is vulnerable to various types of attacks. This paper proposes a method to avoid the sensor level attack. This method uses limited ring wedge spec...

The propagation of arbitrary amplitude dust ion acoustic waves (DIAWs) in a magnetized collisional dusty plasma including hot electrons, with kappa velocity distribution for electrons, warm ions and dust particles has been studied. In the presence of immobile massive dust particulates, DIAWs have been investigated through the Sagdeev pseudo-potential method. It is demonstrated that the amplitud...

In a system of noisy self-propelled particles with interactions that favor directional alignment, collective motion will appear if the density of particles is beyond a critical density. Starting with a reduced model for collective motion, we determine how the critical density depends on the form of the initial perturbation. Specifically, we employ a renormalization-group improved perturbative m...