This paper proposes validated control system design method based on verified numerical computation. The proposed method designs a controller and validates it using verified numerical computation. We also propose a met...
详细信息
Concept hierarchy is an integral part of ontology which is the backbone of the Semantic Web. This paper describes a new hierarchical clustering algorithm for learning concept hierarchy named Clonal Selection Algorithm...
详细信息
Healthcare organization is very important for community in delivering a healthy life. Nurse is the person in charge that will handle the healthcare organization wisely. The nurses should get their duty roster with a w...
详细信息
The aim of this review is to study the methods of steganography using the video file as a cover carrier. The steganography is the art of protecting the information through embedding data in medium carrier, for instant...
详细信息
This paper presents an acoustical signal tracking experiment by swarm mobile robots. Biological swarm is a fascinating behavior of nature which was inspired from social insects' behavior. A mobile robot that is de...
详细信息
This paper presents an acoustical signal tracking experiment by swarm mobile robots. Biological swarm is a fascinating behavior of nature which was inspired from social insects' behavior. A mobile robot that is designed as a swarm robotic platform was employed for implementing voice exploration behavior. An additional module was developed to connect to robots for processing given voice signals using the proportional signal strength approach that estimates orientation of sound source using fuzzy logic approach. The voice processor module utilizes four condenser microphones with around -47db sensitivity which are placed in different directions of the circuit board for capturing surrounding sound signals. Captured samples by microphones are processed to estimate the relative positions of the sound source in the robotic environment. After estimating the position of the signal's source, all participants move towards similar to the insects' colony. The participant robots have an individual task for the estimation of source location from captured samples. Moreover, according to the swarm definition, an additional cooperation between swarm participants is required to achieve a correct colony of robots. Obtained results illustrate the feasibility of the proposed technique and hardware interface for sound signals acquisition with swarm robots.
The proposed by Meier and Staffelbach Self-Shrinking Generator (SSG) which has efficient hardware implementation only with a single Linear Feedback Shift Register is suitable for low-cost and fast stream cipher applic...
The proposed by Meier and Staffelbach Self-Shrinking Generator (SSG) which has efficient hardware implementation only with a single Linear Feedback Shift Register is suitable for low-cost and fast stream cipher applications. In this paper we generalize the idea of the SSG for arbitrary Galois Field GF( p n ). The proposed variant of the SSG is called the p -ary Generalized Self-Shrinking Generator (pGSSG). We suggest a method for transformation of a non-binary self-shrunken pGSSG sequence into balanced binary sequence. We prove that the keystreams of the pGSSG have large period and good statistical properties. The analysis of the experimental results shows that the pGSSG sequences have good randomness properties. We examine the complexity of exhaustive search and entropy attacks of the pGSSG. We show that the pGSSG is more secure than SSG and Modified SSG against these attacks. We prove that the complexity of the used pGSSG attacks increases with increasing the prime p . Previously mentioned properties give the reason to say that the pGSSG satisfy the basic security requirements for a stream chipper and can be useful as a part of modern stream ciphers.
Many approaches for converting keyword queries to formal query languages are presented for natural language interfaces to ontologies. Some approaches present fixed formal query templates, so they lack in providing sup...
详细信息
Every Voronoi region has a polygonal form and has a point which is called generatrix. In this paper, we treat the generalized Voronoi regions as Voronoi regions with weighted generatrices. If the weights of all genera...
详细信息
Every Voronoi region has a polygonal form and has a point which is called generatrix. In this paper, we treat the generalized Voronoi regions as Voronoi regions with weighted generatrices. If the weights of all generatrices are identical, these regions conform with usual Voronoi regions. Suppose a set of points which are not generatrices and usual generatrices are distributed on a plane. Proposed procedures in this paper can find a set of suitable generatrix weights so as to include points in the respective region in accordance with the specified proportion. Tabu search is used to determine generatrix weights. An application of these generalized Voronoi regions is introduced. If points and generatrices are regarded as cities and depots, respectively, this proposal can be applied to the vehicle routing problem(VRP).
This paper proposes validated control system design method based on verified numerical computation. The proposed method designs a controller and validates it using verified numerical computation. We also propose a met...
详细信息
ISBN:
(纸本)9781424476428
This paper proposes validated control system design method based on verified numerical computation. The proposed method designs a controller and validates it using verified numerical computation. We also propose a method to find the numerically most design-specification satisfied controller quickly by using multiple-precision arithmetic. And, this paper applies a proposed method to pole assignment problem.
A low-voltage, low-power, wide gain-range variable gain amplifier (VGA) design has been proposed. To provide wide gain range feature, the proposed VGA utilizes a novel pseudo-exponential function. The design synthesis...
详细信息
ISBN:
(纸本)9789746724913
A low-voltage, low-power, wide gain-range variable gain amplifier (VGA) design has been proposed. To provide wide gain range feature, the proposed VGA utilizes a novel pseudo-exponential function. The design synthesis is simplified and optimized using gm=ID method which enables us to characterize transistors in any operating region based on their g m=ID and VGS relation. As the result, in CMOS 90nm technology under 1.2V supply voltage the proposed VGA has 75dB gain-range over 0.81V control voltage range, with 30MHz-184.8MHz bandwidth, and 0.72mW power consumption.
暂无评论