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In many real-time systems we need to know the exact values of system parameters. Parameters identification for linear and stable systems can be done by taking special measurements. Problems can occur if the tested system is nonlinear and its parameters change due to certain variations or they depend on time. In such cases special procedures have to be applied. These procedures should operate quickly,...
The field of electronics is exposed to emergence of advanced materials with semi conducting properties as a perspective replacement for conventional silicon technology. These materials may comprise, for example, organic semiconductors. Number of interesting properties, such as am bipolarity, are usually observed. It's possible to imagine a transistor which can work under certain conditions in a P-channel...
The hybrid emulator is a mixed-mode electronic circuit which mimics the characteristics of a real device on its terminals. This paper describes a novel approach to the modeling and emulation of general memristive, memcapacitive, and meminductive systems based on digital signal processing. A microcontroller measures the independent port quantity (voltage or current), computes the response, and sets...
In this paper, a high performance current mode logic (CML) frequency divider is introduced in an integrated CMOS phase-locked loop (PLL). Inductive peaking structure and cascode circuit are applied in the CML frequency divider to obtain the broad-band and high frequency operation. In order to obtain a stable operation with low power, the resistor in the inductive peaking structure is replaced by the...
Nowadays, there can be identified at ease a number of significant areas based on a conventional digital circuitry, such as evolvable or adaptive hardware, fault-tolerant architectures, reconfigurable systems or circuit development, where the introduction of partial reconfiguration principles may bring significant benefits with respect to traditional approaches. In case of polymorphic digital circuits...
The paper machine cross-directional (CD) process is an industrial spatially distributed system. Paper properties are controlled by a set of different actuator arrays acting in the cross direction (CD) as the paper sheet moves along the machine direction (MD). The industrial custom is to identify CD models from bump tests that are run in open-loop. This article presents a technique for CD response...
In this work is treated the design of two controllers applied to a fixed-wing unmanned aerial vehicle (UAV). The aim is to stabilize an UAV type Cessna 182 in longitudinal and in lateral-directional flight. The UAV is identified by decoupling the system to longitudinal and lateral-directional modes and using off line modeling. The resulting models represent approximately the UAV because of nonlinearities...
This paper proposes an edge detection technique based on the Multiscale Product of Riesz Wavelet Transform for color image. The product of the wavelet transform combines the advantages of the used scales: in large scale it is strongly anti-noise, and in small scale it can accurately locate edge. The Riesz wavelet transform is a complex wavelet transform (WT) which comes to overcome the discrete wavelet...
In this paper an identification method based on Genetic Algorithms is proposed as an heuristic approach to the ship model identification. The physical model of the motion of 6 DOF (degrees of freedom) floating object is derived. The ship motion equations are then formulated as first order ordinary differential equation system. Next, the state and output equations of the ship are established. Created...
In this paper a new algorithm for single-image super-resolution based on sparse representation over a set of coupled low and high resolution dictionary pairs is proposed. The sharpness measure is defined via the magnitude of the gradient operator and is shown to be approximately scale-invariant for low and high resolution patch pairs. It is employed for clustering low and high resolution patches in...
Users of social media website now can search, share, or just browse for information with ease. In the field of travel and tourism, it can easily find and share information about travel activities, travel destination, and travel accommodation due to plentiful source of information, but there is also a drawback related to the quality of the information. Traditional search engine that uses keyword to...
With the goal of accomplishing vehicular traffic simulations close to reality, modelling intersection control is a very important issue which affects the traffic flow and hence simulation results considerably. This paper presents an exhaustive intersection control applicable for continuous traffic simulators. Our work contains many types of road crossings and junctions occurring in real road networks,...
Service integration in Cloud computing reusing existing services nowadays presents a very important research problem. It is presented during different software's and application implementations and the idea comes for something new, innovative, and contemporary, enabling several services to be integrated and by providing stable, decentralized and just in time services. In SEE University there are different...
The Communication Based Train Control (CBTC) systems today has generated immense interest in transport domain because of its ability to enhance safety and improve operational effectiveness. The current communication solutions for urban guided transport system that is based on the Wireless local area network (WLAN) becomes obsolete with a number of shortcomings in term of capacity and capability. Hence,...
This article presents the simulation and hydraulic assessment of the Sarir field - Tobruk terminal pipeline. The pipeline transports crude oil from Sarir field in the South East of the Libyan Sahara desert to the Tobruk terminal in the East of the Libyan coast. The study exploits the VariSimTM pipeline simulation software. The pipeline, and its pumping facilities, were constructed in 1969 with 34inch...
With the increase in conflicts between countries, underground object detection has become a serious problem today. One of the commonly used technology is Ground penetrating Radar (GPR). There are different variants of GPR devices, but usually they have an array of sensors, which emits electromagnetic waves, and then, collect the reflecting data through its sensors. The signals travel with different...
This paper presents an automatic voice pathology detection using multiresolution technique, more specifically using Gabor wavelets. Gabor wavelets can extract information in various scales and orientations, and thereby can effectively encode distinguishable patterns of normal and pathological voice signals. First, the input voice is transformed to frequency domain using frame based Fourier transformation...
This paper focuses on system testing in designing and developing the process of safety critical systems. The proposal aims at identifying the requirements for system testing of safety critical systems and connects them with system model defined in the SysML language. The design and development process is based on analysis of standards and guidelines carried out in our previous work that focused on...
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