The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this work, we discuss the retrieval of information about the vertical structure of the ionospheric phase by means of Multi-Squint Interferometry (MSInSAR). A model of the MS phase is proposed that accounts for multiple ionospheric layers and residual topographical terms. This model is then generalized to the case of a continuous distribution, which can be retrieved from the MS phase via a 2D Fourier...
This paper provides an overview of GSL (Grasp Synthesis Library) simulator. GSL is open source library for grasp synthesis and robot simulation. The library contain the functions for: virtual robot system, grasp synthesis, 3D drawing. It was developed by the standard library and grammar in C++. In this paper, we discuss characteristics of GSL, and a brief overview of a robot simulation using GSL.
State-of-the-art process technology offers ultra-low power devices operating at ultra-low voltages. However, they show a considerable level of non-linear characteristics. Hence, the accuracy of cell delay and variation modeling for logic cells is expected to be very low with a linear interpolation. In this paper, we propose a compressive sensing based high non-linear cell delay and variation modeling...
The recent image/video coding standards adopt a full quad-tree structured block partitioning with a number of different transform sizes. However, the statistical behavior of the transformed coefficients becomes more difficult to estimate than the previous standards while the single pdf might be enough for modeling the distribution in the previous standards. In this paper, we propose a novel probability...
High speed thin film transistors (TFTs) are in great need for next-generation TVs which will employ ultra high definition resolution (3840×2160) panels and possibly include multi-view autostereoscopic 3D technology which will negate the use of glasses for 3D viewing mode. In order to achieve high mobility devices, various types of metal oxide semiconductors have been extensively studied, including...
In this study, we propose the use of the bubble cloud ellipsoid volume as the quantitative evaluation parameter to monitor the ultrasonic cavitation yield. The bubble cloud ellipsoid volume was calculated by using the bubble cloud image and attenuation characteristics in bubble cloud. The usefulness of this parameter was verified by observing the change in the bubble cloud under various conditions...
Previous key management methods are not adequate for secure data communication through cluster-based routing. Because the cluster head is changed at each round in cluster-based routing, it has to take the step of authentication or shared key setting with each member node. In addition, because most of previous key management mechanisms do not assign mobility to all nodes in the sensor network, there...
This paper presents a novel PID gain scheduling method using root mean square (RMS) for precise positioning stage in lithography process. Low perturbation in regulating control mode is a very important issue and it largely affects the quality of lithography process. Perturbation during regulation control also called as stage hunting, and usually there is a tendency of decrease, if the control bandwidth...
This paper is concerned with validating a mathematical model of regulation in the tryptophan operon using global optimization. Although a number of models for this biochemical network are proposed, in many cases only qualitative agreement between the model output and experimental data was demonstrated, since very little information is currently available to guide the selection of parameter values...
Due to the increased random variations in nanometer silicon process technology as well as voltage and temperature variations, it is very hard to guarantee performance characteristics with traditional corner-based timing analysis method. The variations, together with the issues like crosstalk and jitter, make it difficult to get a good silicon correlation with simulation and to meet target performance...
The piezoelectric actuators are electromechanical device and transduce energy between the electrical and mechanical domains, and they are commercially available materials for managing extremely small displacements in the range of sub-nanometer. Due to their simplicity, high stiffness, low wear and tear, and fast response, they are used for high precision mechanical and electrical engineering applications...
In this paper, we propose a blind watermark detection scheme for digital cinema which is robust against D-A/A-D conversion attack. D-A/A-D conversion attack commonly happens during capturing cinema with a camera and is composed of various geometrical distortions as well as signal processing distortions. In many video applications, geometric distortions have been compensated by utilizing auto-correlation...
The speed or the position synchronization is required for some industrial equipments, such as rolling machine and gantry crane, driven by the servo-motor driver in order to carry the cooperative job. When we design the synchronizing controller by using the commercial servo-amp, it is necessary to obtain its system parameters which are generally unknown. In this paper, the equivalent model of the commercial...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.