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This paper gives stability analysis of the nonlinear predictive control strategy based on the off-line identified RBF-ARX model which is a pseudo-linear time-varying ARX model with system working-point dependent Gaussian RBF neural network style coefficients. The predictive controller doesn't require on-line parameter estimation; it may be applied to a class of smooth nonlinear processes whose working-point...
The purposes of this study were to obtain geographical and geological information before the dyke of the Isahaya Land Reclamation Project is opened, and to evaluate the natural recovery in the excavated area in Isahaya Bay. The presence of no new sediment within the ditches suggests that the natural return to the original geography is difficult after being artificially modified. However, the presence...
The lancelet is an important animal in evolutionary studies. Artificial proliferation is necessary to secure individuals for experiments. However, the number of individuals and their habitats are decreasing remarkably in the Ariake Sea. Despite the transplantation of frys, the number of adults has not increased. In addition, basic data such as water parameters and bottom conditions in the habit have...
The complexity and extra cost associated with a resist topcoat (TC) layer has motivated the industry to transition to TC-less resist processes. By switching to TC-less resists, track suppliers are able to achieve higher throughput using less costly equipment, scanner suppliers can increase the scanning speed of their litho systems with minimized risk of defects, and end users eliminate a process step...
In many universities, computer architecture is taught using traditional textbook-based methods. However, it is not easy for students to understand how computers work through lecture style courses alone. This paper describes an experiential approach for teaching masters-level advanced computer architecture with the assistance of hands-on laboratory sessions, leading students to implement performance-enhancing...
In multi-hop wireless networks, if we know the packet reception rates of all links in the network, we can find the path with the minimum energy consumption. However, to obtain the packet reception rates with high accuracy, we need a number of exchanges of probe packets. Also, the energy consumption along a path depends on a routing method. In this paper, we consider three routing methods and evaluate...
Given a 2-D binary image of size nxn, Euclidean Distance Map (EDM) is a 2-D array of the same size such that each element is storing the Euclidean distance to the nearest black pixel. It is known that a sequential algorithm can compute the EDM in O(n2) and thus this algorithm is optimal. Also, work-time optimal parallel algorithms for shared memory model have been presented. However, these algorithms...
The main contribution of this paper is to present an efficient hardware algorithm for RSA encryption/decryption based on Montgomery multiplication. Modern FPGAs have a number of embedded DSP blocks (DSP48E1) and embedded memory blocks (BRAM). Our hardware algorithm supporting 2048-bit RSA encryption/decryption is designed to be implemented using one DSP48E1, one BRAM and few logic blocks (slices)...
A Field Programmable Gate Array (FPGA) is used to embed a circuit designed by users instantly. FPGAs can be used for implementing hardware algorithms. Most of FPGAs have Configurable Logic Blocks (CLBs) to implement combinational and sequential circuits and block RAMs to implement Random Access Memories (RAMs) and Read Only Memories (ROMs). Circuit design that minimizes the number of clock cycles...
Delay Tolerant Networks have been emerged to support intermittent connectivity of frequently partitioned networks. A routing issue of Delay Tolerant Networks is concerned about the extremely long delay of opportunistic intermittent connections. For considering routing protocols of Delay Tolerant Networks, a forwarding decision and the buffer management scheme are important to improve the successful...
In this paper, a simple scheme to estimate frequency responses of linear time-invariant single-input single-output (SISO) systems based on closed-loop step response data is investigated. The method uses only a single set of step response data of plants under closed-loop operating conditions. The input and output of a plant are filtered by a simple bandpass filter, and the frequency response of the...
Nitrogen oxides (NOx) are one of the air pollutants that cause acid rain. Although utilization of catalysts is a typical established method of treatment to remove NOx, the catalyst is so expensive that the cost of treatment is high. The efficient treatments using pulsed power, which utilize the pulse streamer discharges, have been studied. We have brought the nanosecond pulsed power to the NOx treatment...
To decrease the quantization noise, various 1-bit digital filters are shown. In this paper, we propose a design method of 1-bit digital filter using an Approximate 2-Degree-of-Freedom control. The filter become very simple and the stability of the filter is easy to attain, So the dynamic range of filter is more wide than usual filters. This design method is applied to a high-pass filter, a low-pass...
The main contribution of this paper is to present an efficient parallel sorting "psort" compatible with the standard qsort. Our parallel sorting "psort" is implemented such that its interface is compatible with "qsort" in C Standard Library. Therefore, any application program that uses standard "qsort" can be accelerated by simply replacing "qsort"...
Finding a vast array of applications, the problem of computing the convex hull of a set of sorted points in the plane is one of the fundamental tasks in pattern recognition, morphology and image processing. The main contribution of this paper is to show a simple parallel algorithm for computing the convex hull of a set of n sorted points in the plane and evaluate the performance on the dual quad-core...
This paper deals with a collision avoidance problem for path-following of multiple holonomic robots. The path-following aims to move the robots along reference paths with assigned velocities. When there are geometric errors between the robots' positions and the reference paths or when the differences between their velocities and assigned velocities are not zero, we expect to reduce these errors. Unfortunately,...
This paper focuses on the cost of substitution of intermediate goods and investigates how it affects macroeconomic dynamics after a natural disaster. This paper develops a macroeconomic model to show that the cost of substitution of intermediate goods is an important factor for expanding economic loss by inducing the ??cascade effect.?? In addition, it illustrated that the cost of substitution can...
In multi-hop wireless networks, we often encounter a situation where there are some candidate paths between source node S and destination node D, and have to choose a path from the candidates. Although ordinary routing protocols select paths with minimum hops, QoS (quality of service) routing protocols evaluate paths using measures of QoS, such as expected transmission count (ETX). In multi-hop wireless...
Consider the following operation on an arbitrary positive number: if the number is even, divide it by two, and if the number is odd, triple it and add one. The Collatz conjecture assert that, starting from any positive number n, repeated iteration of the operations eventually produces the value 1. The main contribution of this paper is to present hardware-software cooperative approach to verify the...
Lately, it is required that the bandwidth of PWM power amplifier is extended. For example, it is in application of the testing power supply of a low frequency immunity examination, or a class-D amplifier. In this paper, we show that the bandwidth of PWM power amplifier can be extended by using an Approximate 2DOF Digital Controller. This controller is implemented on a DSP. It is demonstrated from...
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