12 research outputs found

    Modul Management System with Using AJAX Technology

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    Práce je rozdělena do dvou částí. První diskutuje o webových technologií používaných v dnešní době a webových standardech. Podrobněji se zaměřuje na technologii Ajax a její využití. V druhé části se práce věnuje analýze, návrhu a implementaci plně objektového, modulárního redakčního systému.This work is separated into two section. First section discusses about web technologies and standards using at this time. In more detail is focused on technology called Ajax and it's usage. In second section work is focused on analysis, design and implementation full object-oriented, modulary editorial system.

    CONCURRENT DIAGNOSTICS IN MULTIPROCESSOR SYSTEMS

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    The paper presents a survey of diagnostic methods for multiprocessor systems. The diagnostic means known so far are first summarized and evaluated from the point of view of their applicability to systems with distributed control and specifically to the multiprocessor systems. A combination of different diagnostic means is then suggested in order to achieve the maximum diagnostic coverage with minimum overhead

    BOOM - A Heuristic Boolean Minimizer

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    This paper presents an algorithm for two-level Boolean minimization (BOOM) based on a new implicant generation paradigm. In contrast to all previous minimization methods, where the implicants are generated bottom-up, the proposed method uses a top-down approach. Thus, instead of increasing the dimensionality of implicants by omitting literals from their terms, the dimension of a term is gradually decreased by adding new literals. The method is advantageous especially for functions with many input variables (up to thousands) and with only few care terms defined, where other minimization tools are not applicable because of the long runtime. The method has been tested on several different kinds of problems and the results were compared with ESPRESSO

    Fault-Tolerant FPGA-Based Systems

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    This paper presents a new approach to on-line fault tolerance via reconfiguration for the systems mapped onto field programmable gate arrays (FPGAs). The fault detection, based on self-checking technique, is introduced at application level; therefore our approach can detect the faults of configurable logic blocks (CLBs) and routing interconnections in the FPGAs concurrently with the normal system work. A grid of tiles is projected on the FPGA structure and a certain number of spare CLBs is reserved inside every tile. The number of spare CLBs per tile, which will be used as a backup upon detecting any faulty CLB, is estimated in accordance with the probability of failure. After locating the faulty CLBs, the faulty tile will be reconfigured with avoiding the faulty CLBs. Our proposed approach uses a combination of hardware and software redundancy. We assume that a module external to the FPGA controls automatically the reconfiguration process in addition to the diagnosis process (DIRC); typically this is an embedded microprocessor having some storage for the various tile configurations. We have implemented our approach using Xilinx Virtex FPGA. The DIRC code is written in JBits software tools. In response to a component failure this approach capitalizes on the unique reconfiguration capabilities of FPGAs and replaces the affected tile with a functionally equivalent one that does not rely on the faulty component. Unlike fixed structure fault-tolerance techniques for ASICs and microprocessors, this approach allows a single physical component to provide redundant backup for several types of components

    Aortocoronary bypass surgery with or without heartlung machine in high risk patients.

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    This dissertation entitled "Aortocoronary bypass surgery with or without heart-lung machine in high risk patients" is a summary of the findings of two published works by the author: Off-pump Versus On-Pump Coronary Artery Bypass Grafting Surgery in High-Risk Patients: PRAGUE-6 Trial at 30 Days and 1 Year, published in the journal Biomedical Papers in 2015 and Aspirin is insufficient in inhibition of platelet aggregation and thromboxane formation early after coronary artery bypass surgery, published in Journal of Thrombosis and Thrombolysis in 2009. The PRAGUE-6 study, which focused exclusively on patients with very high operative risk according to the EuroSCORE scoring system, confirmed the hypothesis of a higher incidence of combined endpoints up to the 30th day among patients operated with extracorporeal circulation, particularly acute myocardial infarctions. This significant difference was not maintained after one year after the surgery, mainly due to the increase in mortality between the 30th day and the 1st year in patients operated off-pump. The dissertation further discusses similar papers published on the topic in recent years, including the two very last meta- analyzes. The second part of the thesis follows the topic of myocardial revascularization in the field of antiaggregation therapy...SOUHRN Tato dizertační práce s názvem Aortokoronární bypassy s nebo bez mimotělního oběhu u rizikových nemocných je souhrnem poznatků vycházejícím ze dvou publikovaných prací autora: Off-pump versus on-pump coronary artery bypass grafting surgery in high-risk patients: PRAGUE-6 trial at 30 days and 1 year, uveřejněné v časopise Biomedical Papers v roce 2015 a Aspirin is insufficient in inhibition of platelet aggregation and thromboxane formation early after coronary artery bypass surgery, publikovaný v Journal of Thrombosis and Thrombolysis roku 2009. První studie PRAGUE-6, která se zaměřila výhradně na pacienty s velmi vysokým operačním rizikem dle skórovacího systému EuroSCORE, potvrdila hypotézu o vyšším výskytu kombinovaných endpointů do 30. poopearčního dne u pacientů operovaných s použitím mimotělního oběhu, zejména akutních infarktů myokardu. Tento signifikantní rozdíl se po roce od výkonu nezachoval, zejména kvůli nárůstu mortality mezi 30. dnem a 1. rokem u pacientů operovaných na bijícím srdci. Dizertační práce dále v diskuzi polemizuje s podobnými pracemi, publikovanými na dané téma v posledních letech, včetně dvou posledních nerozsáhlejších metaanalýz. Druhá část práce navazuje na téma revskularizace myokardu v otázce antiagregační terapie po aortokoronární rekonstrukci bez ohledu na zvolenou...Department of Cardiac SurgeryKardiochirurgická klinikaThird Faculty of Medicine3. lékařská fakult

    Dependability Evaluation of Time Triggered Architecture Using Simulation

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    The method presented in this paper uses a generic C-language written simulation model of an embedded distributed computer system aimed for a safety-critical control application. The considered system is built using Time Triggered Architecture (TTA) concepts. The aim of the presented simulation method is to evaluate the system capability to tolerate a chosen category of faults. The model, being written in ANSI-C, is portable and machine-independent. Its structure is modular and flexible, so that the system to be studied and the experiment setting can easily be changed. The functionality of this model is demonstrated on a set of fault injection experiments aimed mainly to evaluate the correctness of the Time Triggered Protocol (TTP/C) that implements the abstract concepts of TTA. These experiments were done within the EU/IST project Fault Injection for Time triggered architecture (FIT)

    Aortocoronary bypass surgery with or without heartlung machine in high risk patients.

    Get PDF
    This dissertation entitled "Aortocoronary bypass surgery with or without heart-lung machine in high risk patients" is a summary of the findings of two published works by the author: Off-pump Versus On-Pump Coronary Artery Bypass Grafting Surgery in High-Risk Patients: PRAGUE-6 Trial at 30 Days and 1 Year, published in the journal Biomedical Papers in 2015 and Aspirin is insufficient in inhibition of platelet aggregation and thromboxane formation early after coronary artery bypass surgery, published in Journal of Thrombosis and Thrombolysis in 2009. The PRAGUE-6 study, which focused exclusively on patients with very high operative risk according to the EuroSCORE scoring system, confirmed the hypothesis of a higher incidence of combined endpoints up to the 30th day among patients operated with extracorporeal circulation, particularly acute myocardial infarctions. This significant difference was not maintained after one year after the surgery, mainly due to the increase in mortality between the 30th day and the 1st year in patients operated off-pump. The dissertation further discusses similar papers published on the topic in recent years, including the two very last meta- analyzes. The second part of the thesis follows the topic of myocardial revascularization in the field of antiaggregation therapy..
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