作者：
Zdanowski, M.Opole University of Technology
Faculty of Electrical Engineering Automatic Control and Computer Science Electrical Power Engineering Prószkowska 76 B2 45-748 Opole Poland
The paper presents research results on ECT (Electrostatic Charge Tendency) of cyclohexane and hexane mixtures, that is dielectric liquids of a simple chemical structure and high purity (Pro analysi). The research test...
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ISBN:
(纸本)1424415853
The paper presents research results on ECT (Electrostatic Charge Tendency) of cyclohexane and hexane mixtures, that is dielectric liquids of a simple chemical structure and high purity (Pro analysi). The research tests are carried out in a spinning disk system, where the factors affecting the value of the electrification current registered are a varying composition of the mixture and the rotational speed of the disk. In the next stage physicochemical parameters are measured in order to determine the relationship between the properties of the mixtures under study and the electrification current generated. The research results show that the ECT of the mixture depends, to a large extent, on the proper selection of particular components.
This article broaches the sample implementation of the WWW Module for Intelligent Housing system, based on a single-chip, 8-bit microcomputer, which was scope of the master diploma thesis of one of the authors. It des...
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This article broaches the sample implementation of the WWW Module for Intelligent Housing system, based on a single-chip, 8-bit microcomputer, which was scope of the master diploma thesis of one of the authors. It describes both the hardware and software part of the module with special focus on the solution of pseudo-parallel processing of network data, including the way of handling many network connections to the server at the same time. The authors consider the use of embedded interrupt system as a base of a time-division multiplexing (TDM) software layer developed and describe the developed version of minimal TCP/IP stack (so called microstack), with an overview of all protocols implemented. Also the implementation of a simple WWW server with capability to interact with module inputs and outputs is being discussed, as well as the possibility of interaction with other Intelligent Housing modules connected to the Module. The article shows exemplary applications of the mentioned Web Module and delivers information about ways of extending the Web Modulepsilas functionality.
作者：
Wolny, S.Zdanowski, M.Opole University of Technology
Faculty of Electrical Engineering Automatic Control and Computer Science Department of Electrical Power Engineering Prószkowska 76 B2 45-748 Opole Poland
The paper presents the application of the Cole-Cole model for determining the runs of the return voltage of the paper-oil insulation sample through a computer simulation. Different insulation conditions were simulated...
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ISBN:
(纸本)1424415853
The paper presents the application of the Cole-Cole model for determining the runs of the return voltage of the paper-oil insulation sample through a computer simulation. Different insulation conditions were simulated through an adequate selection of parameters α and τ of the Cole-Cole model. For calculation purposes, a series - parallel substitute scheme, obtained through approximation of a discrete characteristic operator impedance Za of the model applied, was used. The diagnostics of the simulated insulation condition was based on the analysis of a few selected parameters of the return voltage, obtained from time characteristics.
This paper proposes a robust algorithm for detecting interest points based on the NonsubSampled Contourlet Transform (NSCT). The NSCT provides multiscale decomposition with directional filters at each scale. Furthermo...
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ISBN:
(纸本)9780769534404
This paper proposes a robust algorithm for detecting interest points based on the NonsubSampled Contourlet Transform (NSCT). The NSCT provides multiscale decomposition with directional filters at each scale. Furthermore, NSCT is very efficient in extracting the geometric information of images and therefore it has very good feature localization. The NSCT-based point detector is compared to the widely used Harris and Difference of Gaussian (DoG) interest point detectors. The experimental results reveal the robustness of the proposed algorithm to rotation, scale and viewpoint changes.
The expansive nature of the Internet produced a vast quantity of unstructured data, compared to our conception of a conventional data base. The application of clustering on the World Wide Web is essential to get struc...
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The expansive nature of the Internet produced a vast quantity of unstructured data, compared to our conception of a conventional data base. The application of clustering on the World Wide Web is essential to get structured information from this sea of information. In this paper, we intend to test the results of a new clustering technique - clustering by compression - when applied to heterogeneous sets of data. The clustering by compression procedure is based on a parameter-free, universal, similarity distance, the normalized compression distance or NCD, computed from the lengths of compressed data files (singly and in pair-wise concatenation). In order to validate the results, we calculate some quality indices. If the values we obtain prove a high quality of the clustering, in the near future we plan to include the clustering by compression technique into a framework for clustering heterogeneous Web objects.
The goal of this work is to study the feasibility of a Heterogeneous Data Classification and Search (HDCS) system and to provide a possible design for its implementing. In order to design a HDCS system we propose an a...
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The paper presents a new numerical integration routine BGKODE_DSP. This routine is based on BGKODE routine, which forms a practical application of the Kroghpsilas algorithm. BGKODE_DSP routine realizes the predictor-c...
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The paper presents a new numerical integration routine BGKODE_DSP. This routine is based on BGKODE routine, which forms a practical application of the Kroghpsilas algorithm. BGKODE_DSP routine realizes the predictor-corrector method and has been simplified to ensure its applicability in real time systems. The results of the comparison between the selected common numerical integration methods and the new routine is presented. The scope of this research also involves the range of accuracy of the solution resulting from the shorter computation time. Experiments have been carried out on experimental drive system with induction motor with the use of DTC method.
The aim of this paper is an attempt of the simulation of the electromechanical systems with the use of the programming tools included in the modern graphical packages or graphical extensions to the programming languag...
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The aim of this paper is an attempt of the simulation of the electromechanical systems with the use of the programming tools included in the modern graphical packages or graphical extensions to the programming languages. The advantage of such approach lies in possibility of the simultaneous high quality visualization of the currently obtained results. The possibilities of new graphical packages enable making calculations on the Web platform - it is new and very interesting idea. The proposed solutions can be used both to the educational and presentation tasks.
The common approach for the design of an error correction system is first to construct a code and then to define the hardware structure of the encoder and decoder. However, in the case of LDPC codes (low-density parit...
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ISBN:
(纸本)9781424421336
The common approach for the design of an error correction system is first to construct a code and then to define the hardware structure of the encoder and decoder. However, in the case of LDPC codes (low-density parity-check) such a constructed code is generally not well suited for a hardware implementation. It has been recognized that the code construction and hardware design must be considered jointly to facilitate LDPC decoder and encoder implementation. In this paper, an efficient decoder structure for regular and irregular LDPC codes, based on TDMP (turbo-decoding message passing) scheme is designed first. The decoder has been implemented and verified in an FPGA device. Constraints for the parity check matrix of a code to be suitable for the decoder architecture are defined. Then an algorithm for LDPC parity check matrix construction subject to these constraints is presented. The algorithm aims at improving performance of the code in the low SNR region by employing irregular codes as well as in high SNR region by reducing the number of small Stopping Sets and Trapping Sets in the Tanner graph of the code making use of a computer search technique.
Vibrations, especially generated by mechanical systems, exhibit a fortunate and extremely useful feature in fault diagnosis: encoding information about the health state of the system that produced them. In order to de...
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Vibrations, especially generated by mechanical systems, exhibit a fortunate and extremely useful feature in fault diagnosis: encoding information about the health state of the system that produced them. In order to decode that information, the main properties of vibration yielding identification and isolation of faults have to a priori be known. The paper goal is to review such properties and to present some elementary methods of automatic fault diagnosis by vibrations processing.
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