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D. Brodic

Methodology for the Evaluation of the Algorithms for Text Line Segmentation Based on Extended Binary Classification

Text line segmentation represents the key element in the optical character recognition process. Hence, testing of text line segmentation algorithms has substantial relevance. All previously proposed testing methods deal mainly with text database as a template. They are used for testing as well as for the evaluation of the text segmentation algorithm. In this manuscript, methodology for the evaluation of the algorithm for text segmentation based on extended binary classification is proposed. It is established on the various multiline text samples linked with text segmentation. Their results are distributed according to binary classification. Final result is obtained by comparative analysis of cross linked data. At the end, its suitability for different types of scripts represents its main advantage.

Open access

Sylwester Kaczmarek, Magdalena Młynarczuk, Marcin Narloch and Maciej Sac

Measurements of Ason/Gmpls Connection Control Layer Performance According to Etsi Methodology

Measurements of performance have always been crucial for the evaluation of telecommunication systems, especially for implementation of network control elements responsible for connection handling which regards to bandwidth reservation, modification and release. That problem also arises in the Automatically Switched Optical Network/Generalized Multiprotocol Label Switching (ASON/GMLPS) architecture, which is considered as one of the components of Next Generation Network (NGN). The European Telecommunications Standards Institute (ETSI) proposed a universal methodology of telecommunication control elements performance measurements, which can be also adopted to investigation of an ASON/GMPLS connection control layer. In this paper the application of the ETSI measurements methodology with regard to ASON/GMPLS performance is described. The implementation of a laboratory testbed as well as executed performance measurements according to the ETSI methodology and their results are presented.

Open access

Elena Neverova-Dziopak and Zbigniew Kowalewski

Abstract

Deep analysis of trophic state assessment methods has led to conclusion, that currently there is no universal methodology and existing methods are characterized by significant shortcomings. The approach proposed by the authors is different from generally used. Authors start from the assumption, that trophic state can be reflected by the state of biotic balance, which can be described by the values of Index of Trophic State. Researches were carried out in order to assess the trophic state of running waters and to estimate the limiting role of biogenic substances for eutrophication process development on the base of author's concept founded on above mentioned index.

Open access

Łukasz Kotynia, Piotr Amrozik and Andrzej Napieralski

Integration Initiative, Inc., 2009. "Liberty user guide, vol. 1 version 2009.06," Synopsys, Inc., 2009. M. Keating and P. Bricaud, Reuse Methodology Manual for System-on-a-Chip Designs , 3rd ed. Springer, 2007. T. R. Shiple and H. T. G. Berry, "Constructive analysis of cyclic circuits," in Proc. European Design and Test Conference (ED&TC) 1996 , Paris, France, Mar. 1996, pp. 328-333. A. Gupta and C. Selvidge, "Acyclic modeling of combinational loops," in Proc. IEEE

Open access

Filip Lewandowski, Mateusz Paluszkiewicz, Tomasz Grajek and Krzysztof Wegner

References [1] C. Fehn, “Depth-image-based rendering (DIBR), Compression and Transmission for a New Approach on 3D-TV,” Proceedings of SPIE , vol. 5291, pp. 93-104, January 2004, CA, U.S.A. [2] J. W. Shade, S. J. Gortler, L.-W. He, and R. Szeliski, “Layered depth images,” Computer Graphics , vol. 32, pp. 231-242, July 1998, Annual Conference Series. [3] ITU-R Rec. BT.500-11, “Methodology for the Subjective Assessment of the Quality of Television Pictures,” 2002. [4] Z. Wang, A. C. Bovik

Open access

Grzegorz Łabiak, Marian Adamski, Michał Doligalski, Jacek Tkacz and Arkadiusz Bukowiec

UML Modelling in Rigorous Design Methodology for Discrete Controllers

The paper presents an application of UML technology in a discrete system development process. In the process at the analysis stage UML diagrams are fundamental tool. The outcome of this stage is a basis for formal models exploited at the design stage, where the design is symbolically verified and treated as a rule-based system. Two formal models of good graphical appeal are proposed: Petri nets and state machine diagrams. Both are heavily using Boolean expressions what makes that design can easily be implemented in modern programmable structures.

Open access

Eduardo Ortigueira, Ivan Bastos, Luís Oliveira, Joăo Oliveira and Joăo Goes

A Simplified Design Methodology for MOSFET-Only Wideband Mixer

In this paper we present a MOSFET-only implementation of a wideband Gilbert Cell. The circuit uses a commongate topology for a wideband input match, capable to cover the Wireless Medical Telemetry Service (WMTS) frequency bands of 600 MHz and 1.4 GHz. In this circuit the load resistors are replaced by transistors in triode region, to reduce area and cost, and minimize the effects of process and supply variations and mismatches. In addition, we obtain a higher gain for the same DC voltage drop, with a reduced impact on the noise figure (NF). The performance of this topology is compared with that of a conventional mixer with load resistors. Simulation results show that a peak gain of 20.6 dB (about 6 dB improvement) and a NF about of 11 dB for the 600 MHz band. The total power consumption is 3.6 mW from a 1.2 V supply.

Open access

E. Jarošová and E. Kureková

Spherical Coordinate Instruments Utilizing Uncertainty Estimation Based on Monte Carlo . Measurement Science Review 12 (2), 40-45 . [10] Likeš, J. (1968). Navrhování průmyslovýchexperimentů . (in Czech) Praha: SNTL. [11] Myers, R.H., Montgomery, D.C. (2002). ResponseSurface Methodology: Process and ProductOptimization Using Designed Experiments . New York: John Wiley & Sons. [12] Wu, C.F.J., Hamada, M. (2000): Experiments:Planning, Analysis, and Parameter DesignOptimization. New York: John Wiley & Sons

Open access

Jacek Bartman and Bogdan Kwiatkowski

Abstract

The present paper covers a review of documents that specify measurement methods of voltage waveform distortion. It also presents measurement stages of waveform components that are uncommon in the classic fundamentals of electrotechnics and signal theory, including the creation process of groups and subgroups of harmonics and interharmonics. Moreover, the paper discusses selected distortion factors of periodic waveforms and presents analyses that compare the values of these distortion indices. The measurements were carried out in the cycle per cycle mode and the measurement methodology that was used complies with the IEC 61000-4-7 norm. The studies showed significant discrepancies between the values of analyzed parameters.

Open access

Pavol Božek and Yuri Turygin

Abstract

Submission is focused on completing the information system about quality, operation, automatic testing and new evaluating method of vehicle subsystem. Numeric analysis is carried out on the base of automatic collection and systematic recording of commercial car operation. Proposed new information system about operation and trial process allows verification according to the proposed method. Critical components verified in laboratory conditions are detected by numeric analysis of reliability. Quality level increasing not only for final product, but also related automatic test laboratory for cars is the result of respecting these principles.