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ABSTRACT The power delivered by photovoltaic systems it can be increased through its automated tracking after the sun. Utilizing a cheap solution for control required the implementation of an algorithm for orientation, simple and... more
ABSTRACT The power delivered by photovoltaic systems it can be increased through its automated tracking after the sun. Utilizing a cheap solution for control required the implementation of an algorithm for orientation, simple and efficient. The best solution was the classic algorithm that generates sun relative movement from Terra. Because the calculus volume of sun position is relative big, it must be necessary to find another solution that described the sun trajectory. The proposed solution it based on a neuronal structure, capable to approximate with a good precision the sun trajectory and to deliver permanently its coordinates.
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In this paper, the authors present PSO based algorithms used to optimize the electromagnetic device of an international test problem. Several variants of PSO based algorithms are implemented. These are improved variants of Standard PSO... more
In this paper, the authors present PSO based algorithms used to optimize the electromagnetic device of an international test problem. Several variants of PSO based algorithms are implemented. These are improved variants of Standard PSO (SPSO), Discrete PSO (DPSO) and Quantum PSO (QPSO). A domain-shrinking technique is used to improve the results of these algorithms when optimizing the electromagnetic device of the TEAM22 benchmark problem.
The paper presents an electrocardiographic processing system based on a DSP module connected to a PC microcomputer. It describes some important aspects concerning the digital signal processing, especially the ECG waves. The general... more
The paper presents an electrocardiographic processing system based on a DSP module connected to a PC microcomputer. It describes some important aspects concerning the digital signal processing, especially the ECG waves. The general structure and the operating mode of a development system based on the floating point DSP96002 from Motorola, connected to an IBM PC computer, is presented in this paper. The processing program comprises a powerful algorithm for the electrocardiogram wave detection, analysis and diagnosis. The paper describes an efficient algorithm for the ECG waves recognition. Also, the program uses the Fast Fourier Transform in the ECG signal processing.
In this paper is presented a new approach for decreasing the spurious power consumption in K-LUT based FPGA implemented circuits. The approach is based on selective collapsing nodes in a direct acyclic graph (DAG) representing... more
In this paper is presented a new approach for decreasing the spurious power consumption in K-LUT based FPGA implemented circuits. The approach is based on selective collapsing nodes in a direct acyclic graph (DAG) representing combinational or synchronous sequential circuits. It was used the simulation-based approach that estimates, using Monte Carlo experiment, the spurious switching activity of each net in the circuit. Traversing circuits in topological order, step by step best K-feasible cone are computed at the output of each node. Preserving the best depth of the circuits the mapping stage is done searching to minimize spurious switching power.
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The paper presents several improvements to our synthesis platform Xsynth that was developed targeting advanced logic synthesis and technological mapping for k-LUT based FPGAs. Having implemented an efficient exhaustive k-feasible cone... more
The paper presents several improvements to our synthesis platform Xsynth that was developed targeting advanced logic synthesis and technological mapping for k-LUT based FPGAs. Having implemented an efficient exhaustive k-feasible cone generator it was targeted delay optimum mapping and optimal area. Implemented algorithm can use common unit-delay model and, the more general, the edge-delay model. The last model allows arbitrary delay values assignments to each branch of a circuit net. Such arbitrary delay values my reflect estimates of placement and routing delays. Powerful heuristics targeting minimal area (number of used LUTs in the mapped network) allow determinations of delay minimum solutions but having low used area.
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The Smith chart was primarily developed, extended, and refined by Phillip Hagar Smith [1] in a series of works published [2]-[4] between 1939 and 1969. Smith was born in Lexington, Massachusetts, in 1905. He majored in electrical... more
The Smith chart was primarily developed, extended, and refined by Phillip Hagar Smith [1] in a series of works published [2]-[4] between 1939 and 1969. Smith was born in Lexington, Massachusetts, in 1905. He majored in electrical communications at Tufts University and joined the Radio Research Department of Bell Telephone Laboratories (now Bell Labs) in 1928. While there, in around 1930, Smith started work on the diagram that was to become the Smith chart. He submitted the initial version to Electronics Magazine in 1937; the magazine finally published his diagram in 1939 [2]. The MIT Radiation Laboratory started using the chart. In 1940, and in 1944 Smith published a second article that incorporated further improvements, including the use of the chart with either impedance or admittance coordinates. In 1952, Smith was elevated to IEEE Fellow for his contributions to the development of antennas and the graphical analysis of transmission-line characteristics. The first issue of Microw...
We developed, using structures from MV-SIS, an application dedicated to K-LUT based FPGA synthesis, named Xsynth. Main component of it, levelMap the mapping program, was implemented using the minDepth algorithm. The mapping program was... more
We developed, using structures from MV-SIS, an application dedicated to K-LUT based FPGA synthesis, named Xsynth. Main component of it, levelMap the mapping program, was implemented using the minDepth algorithm. The mapping program was instrumented in order to study and evaluate different heuristics involved in establishing best approach to find optimum delay and optimal area mapping. We did run our mapping application on many circuits from the MCNC and IWLS 2005 benchmark circuits and we obtained good results. We present our main model, procedures, measurement results and brief comparison with previous published relevant similar mapping algorithms.
Traffic congestions represent current realities of urban environments, partly because the road infrastructure capacity can't cope anymore with the increase rate of the cars number. This characteristic, coupled with weather conditions,... more
Traffic congestions represent current realities of urban environments, partly because the road infrastructure capacity can't cope anymore with the increase rate of the cars number. This characteristic, coupled with weather conditions, work zones and traffic incidents makes traffic congestions a major concern for municipalities. The advanced technologies for traffic control have the potential to lead to an efficient use of the present road network systems, which will reduce energy consumption, local pollutant emissions, delays, traffic congestion and improve safety. Intelligent Transportation Systems (ITS) such as travel advisories, advanced traveler information systems etc. tries to decrease travel time and relieve congestion by assisting the drivers in the process of decision making while driving, by selecting better modes of travel, departure times and routes. The current ITS platforms have as main drawback the inadequacy to support collaborative features and their limited or ...
The Smart Home technology is a house that implements a variety of physical and digital well-integrated technologies, providing a number of functionalities like control of lighting, temperature, multimedia devices, flammable gas leakage,... more
The Smart Home technology is a house that implements a variety of physical and digital well-integrated technologies, providing a number of functionalities like control of lighting, temperature, multimedia devices, flammable gas leakage, automatic plant irrigation or alarms security using a set of hardware components connected to a development board that can be accessed remotely through an Android application. First, is presented the context and a state-of-the-art for such of applications. Second, is made a description for the architecture hardware and software of a smart home application like custom. Finally, results are highlighted and some edifying conclusions.
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The paper studies the efficiency of a QPSO (Quantum-behaved Particle Swarm Optimization) algorithm enhanced with neighborhood strategies to solve a NDET (Non-Destructive Electromagnetic Testing) inverse problem, formulated as an... more
The paper studies the efficiency of a QPSO (Quantum-behaved Particle Swarm Optimization) algorithm enhanced with neighborhood strategies to solve a NDET (Non-Destructive Electromagnetic Testing) inverse problem, formulated as an optimization problem. Two different neighborhood strategies are analyzed and compared with the classic QPSO, one based on disjoint subswarms, and the other based on informants. Among the neighborhood strategies, some problem specific local search techniques are applied to speed up the inversion process. The NDT inverse problem consists in the reconstruction of 3D partially conductive cracks with uniform conductivity, conductivity smaller than the conductivity of the tested specimen.
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The Smart Home technology is a house that implements a variety of physical and digital well-integrated technologies, providing a number of functionalities like control of lighting, temperature, multimedia devices, flammable gas leakage,... more
The Smart Home technology is a house that implements a variety of physical and digital well-integrated technologies, providing a number of functionalities like control of lighting, temperature, multimedia devices, flammable gas leakage, automatic plant irrigation or alarms security using a set of hardware components connected to a development board that can be accessed remotely through an Android application. First, is presented the context and a state-of-the-art for such of applications. Second, is made a description for the architecture hardware and software of a smart home application like custom. Finally, results are highlighted and some edifying conclusions.
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This paper presents of the latest and most appropriate technological solutions for standalone telemedicine applications. First, there is made an introduction about the need for such solutions. Then, it shows about state-of-the-art of... more
This paper presents of the latest and most appropriate technological solutions for standalone telemedicine applications. First, there is made an introduction about the need for such solutions. Then, it shows about state-of-the-art of implementing technological solutions used in autonomous telemedicine applications. Next, it presents hardware/software and storage solutions appropriate for autonomous telemedicine applications. Finally, the paper concludes with several significant actual telemedicine solutions and some future research.
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This paper presents the design and implementation of a wireless embedded application used to control a mobile robot. First, there is made an introduction about the purpose of this application, its functionality and the usefulness of... more
This paper presents the design and implementation of a wireless embedded application used to control a mobile robot. First, there is made an introduction about the purpose of this application, its functionality and the usefulness of implementation. Second, it shows about the advantage of the wireless Bluetooth technologies used by the application. Next, it presents a functional description of the system design and the architecture and modules of the hardware application. Then, it presents the software application. Finally, the paper concludes with several significant results and some future research.
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ABSTRACT The paper presents a viable solution by means of which it is ensured a maximal illumination of photovoltaic panels (PV). In order to have an utmost irradiation on the collecting surface, this must be set perpendicularly on the... more
ABSTRACT The paper presents a viable solution by means of which it is ensured a maximal illumination of photovoltaic panels (PV). In order to have an utmost irradiation on the collecting surface, this must be set perpendicularly on the incident radius. This was realized by orienting the panel on two axes according to the relative movement of the sun in conformity with the earth. The panel will track the sun according to a positioning algorithm as long as the sun is in the area of visibility. The solution chosen for the position of the panels is based on two systems of positioning in an open-loop, one for the elevation angle and the other for the azimuth, commanded by a TWIDO controller.
ABSTRACT The paper describes the model of a two-axis-tracked PV system projected by the authors. The model was set up with Neural Petri Nets, a method which combines the advantages of neural networks with the modeling capabilities of the... more
ABSTRACT The paper describes the model of a two-axis-tracked PV system projected by the authors. The model was set up with Neural Petri Nets, a method which combines the advantages of neural networks with the modeling capabilities of the Petri Net. The PV orientation was achieved on the basis of determining the relative sun-position towards the earth. The integrated neural network has the role of determining the sun's position, which has as inputs coordinated elements, date and time. The realized model was simulated and will be used for the implementation and the optimization of the PV automated orientation program.
ABSTRACT Partitioning is a central problem in VLSI design automation, addressing circuit’s manufacturability. Circuit partitioning has multiple applications in VLSI design. One of the most common is that of dividing combinational circuits... more
ABSTRACT Partitioning is a central problem in VLSI design automation, addressing circuit’s manufacturability. Circuit partitioning has multiple applications in VLSI design. One of the most common is that of dividing combinational circuits (usually large ones) that will not fit on a single package among a number of packages. Partitioning is of practical importance for k-LUT based FPGA circuit implementation. In this work is presented new multilevel and multi-resource partitioning algorithm targeting large combinational circuits in order to efficiently use existing FPGAs circuits.
OPTIMIZING LARGE COMBINATIONAL NETWORKS FOR K-LUT BASED FPGA MAPPING Ion I. BUCUR, PhD Ioana FĂGĂRĂŞAN, PhD Cornel POPESCU, PhD University Politehnica of Bucharest George CULEA, PhD University of Bacǎu, Faculty of Electrical Engineering,... more
OPTIMIZING LARGE COMBINATIONAL NETWORKS FOR K-LUT BASED FPGA MAPPING Ion I. BUCUR, PhD Ioana FĂGĂRĂŞAN, PhD Cornel POPESCU, PhD University Politehnica of Bucharest George CULEA, PhD University of Bacǎu, Faculty of Electrical Engineering, ...
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This paper describes the implementation of the program interpreter and communication server for a wafer handling robot controller. This is a complex robot controller software system with a very flexible operator interface. The program... more
This paper describes the implementation of the program interpreter and communication server for a wafer handling robot controller. This is a complex robot controller software system with a very flexible operator interface. The program interpreter executes the robot programs which are transmitted by the user via the communication server. The work is done by a modular system in which every component has a strictly defined role.
Abstract: The paper presents several improvements to our synthesis platform Xsynth that was developed targeting advanced logic synthesis and technological mapping for k-LUT based FPGAs. Having implemented an efficient exhaustive... more
Abstract: The paper presents several improvements to our synthesis platform Xsynth that was developed targeting advanced logic synthesis and technological mapping for k-LUT based FPGAs. Having implemented an efficient exhaustive k-feasible cone generator it was ...