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[popis] => Symbolic Regression (SR) is a well-studied method in Genetic Programming (GP) for discovering free-form mathematical models from observed data, which includes not only the model parameters but also its innate structure. Another level of the regression problem is the design of an appropriate fitness function, by which are individual solutions judged. This paper proposes a new fitness function design for symbolic regression problems called a Sum epsilon-Tube Error (STE). The function of this criterion can be visualized as a tube with a small radius that stretches along the entire domain of the approximated function. The middle of the tube is defined by points that match approximated valued (in the so-called control points). The evaluation function then compares, whether each approximated point does or does not belong to the area of the tube and counts the number of points outside of the epsilon-Tube. The proposed method is compared with the standard sum square error in several test cases, where the advantages and disadvantages of the design are discussed. The obtained results show great promise for the further development of the STE design and implementation.
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author="Radomil {Matoušek} and Tomáš {Hůlka} and Ladislav {Dobrovský} and Jakub {Kůdela}",
title="Sum Epsilon-Tube Error Fitness Function Design for GP Symbolic Regression: Preliminary Study",
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pages="78--83",
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[nazev] => Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM
[nazev_orig] => Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM
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[popis] => Die-sinking electric discharge machining (EDM) is an indispensable technological operation, especially in the production of molds and all internal and external shapes and cavities. For this reason, the effect of machine parameter settings (open-voltage, pulse current, pulse on time, and pulse off time) on the machining of two types of steels, 1.2363 and 1.2343ESR, was carefully investigated using graphite or copper electrodes in 10mm × 10 mm or 100mm × 100 mm shapes. For this purpose, a two-level half factor experiment was performed with one replication at the corner points and two replications at the central points, with a total of 80 rounds. The subject of the evaluation was the topography and morphology of machined surfaces including a detailed analysis of surface and subsurface defects in the form of cracks including the creation of regression equations describing the probability of crack occurrence. Furthermore, a study of the local hardness change in the subsurface area was performed, and lamellas were also made and studied by transmission electron microscopy. It has been found that by using die-sinking EDM, it is possible to effectively predict the probability of cracking on machined surfaces and also on machine 1.2363 and 1.2343ESR steels with a very good surface quality of Ra 1.9 and 2.1 µm using graphite electrodes. These findings will ensure the production of parts with the required surface quality without cracks, which is a crucial aspect for maintaining the required functionality and service life of the parts.
[popis_orig] => Die-sinking electric discharge machining (EDM) is an indispensable technological operation, especially in the production of molds and all internal and external shapes and cavities. For this reason, the effect of machine parameter settings (open-voltage, pulse current, pulse on time, and pulse off time) on the machining of two types of steels, 1.2363 and 1.2343ESR, was carefully investigated using graphite or copper electrodes in 10mm × 10 mm or 100mm × 100 mm shapes. For this purpose, a two-level half factor experiment was performed with one replication at the corner points and two replications at the central points, with a total of 80 rounds. The subject of the evaluation was the topography and morphology of machined surfaces including a detailed analysis of surface and subsurface defects in the form of cracks including the creation of regression equations describing the probability of crack occurrence. Furthermore, a study of the local hardness change in the subsurface area was performed, and lamellas were also made and studied by transmission electron microscopy. It has been found that by using die-sinking EDM, it is possible to effectively predict the probability of cracking on machined surfaces and also on machine 1.2363 and 1.2343ESR steels with a very good surface quality of Ra 1.9 and 2.1 µm using graphite electrodes. These findings will ensure the production of parts with the required surface quality without cracks, which is a crucial aspect for maintaining the required functionality and service life of the parts.
[klicova_slova] => die-sinking EDM; electrical discharge machining; steel; design of experiment; cracks; machining parameters
[klicova_slova_orig] => die-sinking EDM; electrical discharge machining; steel; design of experiment; cracks; machining parameters
[url] => https://www.mdpi.com/2079-6412/10/4/406
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[vycet_osob] => MOURALOVÁ, K.; BENEŠ, L.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; PROKEŠ, T.; FRIES, J.
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[citace_text] => MOURALOVÁ, K.; BENEŠ, L.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; PROKEŠ, T.; FRIES, J. Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM. Coatings, MDPI, 2020, vol. 10, no. 4, p. 1-18. ISSN: 2079-6412.
[citace_html] => MOURALOVÁ, K.; BENEŠ, L.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; PROKEŠ, T.; FRIES, J. Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM. Coatings, MDPI, 2020, vol. 10, no. 4, p. 1-18. ISSN: 2079-6412.
[citace_rtf] =>
[citace_bibtex] => @article{BUT163597,
author="Kateřina {Mouralová} and Libor {Beneš} and Josef {Bednář} and Radim {Zahradníček} and Tomáš {Prokeš} and Jiří {Fries}",
title="Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM",
journal="Coatings, MDPI",
year="2020",
volume="10",
number="4",
pages="1--18",
doi="10.3390/coatings10040406",
issn="2079-6412",
url="https://www.mdpi.com/2079-6412/10/4/406"
}
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[nazev_en] => Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM
[popis_en] => Die-sinking electric discharge machining (EDM) is an indispensable technological operation, especially in the production of molds and all internal and external shapes and cavities. For this reason, the effect of machine parameter settings (open-voltage, pulse current, pulse on time, and pulse off time) on the machining of two types of steels, 1.2363 and 1.2343ESR, was carefully investigated using graphite or copper electrodes in 10mm × 10 mm or 100mm × 100 mm shapes. For this purpose, a two-level half factor experiment was performed with one replication at the corner points and two replications at the central points, with a total of 80 rounds. The subject of the evaluation was the topography and morphology of machined surfaces including a detailed analysis of surface and subsurface defects in the form of cracks including the creation of regression equations describing the probability of crack occurrence. Furthermore, a study of the local hardness change in the subsurface area was performed, and lamellas were also made and studied by transmission electron microscopy. It has been found that by using die-sinking EDM, it is possible to effectively predict the probability of cracking on machined surfaces and also on machine 1.2363 and 1.2343ESR steels with a very good surface quality of Ra 1.9 and 2.1 µm using graphite electrodes. These findings will ensure the production of parts with the required surface quality without cracks, which is a crucial aspect for maintaining the required functionality and service life of the parts.
[klicova_slova_en] => die-sinking EDM; electrical discharge machining; steel; design of experiment; cracks; machining parameters
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[citace_text] => VDOLEČEK, F. New definitions of base units valid from 2019. Akustika, 2020, vol. Volume 35, no. březen 2020, p. 5-8. ISSN: 1801-9064.
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[citace_text] => KŮDELA, J. Minimum-Volume Covering Ellipsoids: Improving the Efficiency of the Wolfe-Atwood Algorithm for Large-Scale Instances by Pooling and Batching. Mendel Journal series, 2019, vol. 25, no. 2, p. 19-26. ISSN: 1803-3814.
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[popis] => In this paper, we describe an effective algorithm for handling chance constrained optimization problems, called the Pool & Discard algorithm. The algorithm utilizes the scenario approximation framework for chance constrained optimization problems, and the warm-start and problem modification features of modern solvers. The exploitation of the problem structure and efficient implementation allows us to considerably speed up the computations, especially for large instances, when compared with conventional methods.
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[url] => https://ieeexplore.ieee.org/document/9079523
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[citace_text] => KŮDELA, J.; POPELA, P. Pool & Discard Algorithm for Chance Constrained Optimization Problems. IEEE Access, 2020, vol. 8, no. 1, p. 79397-79407. ISSN: 2169-3536.
[citace_html] => KŮDELA, J.; POPELA, P. Pool & Discard Algorithm for Chance Constrained Optimization Problems. IEEE Access, 2020, vol. 8, no. 1, p. 79397-79407. ISSN: 2169-3536.
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volume="8",
number="1",
pages="79397--79407",
doi="10.1109/ACCESS.2020.2990726",
issn="2169-3536",
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[poznamka_metriky] =>
[nazev_en] => Pool & Discard Algorithm for Chance Constrained Optimization Problems
[popis_en] => In this paper, we describe an effective algorithm for handling chance constrained optimization problems, called the Pool & Discard algorithm. The algorithm utilizes the scenario approximation framework for chance constrained optimization problems, and the warm-start and problem modification features of modern solvers. The exploitation of the problem structure and efficient implementation allows us to considerably speed up the computations, especially for large instances, when compared with conventional methods.
[klicova_slova_en] => chance constrained programming; scenario approximation; P&D algorithm; stochastic programming; constraint removal
[vysledek_datum] => 2020-04-27T00:00:00+02:00
)
[7] => Array
(
[vysledek_id] => 164023
[vysledek_druh_id] => ARTWOS
[ex_vysledek_id] => 136522
[vysledek_rok] => 2020
[nazev] => Machining of pure molybdenum using WEDM
[nazev_orig] => Machining of pure molybdenum using WEDM
[duvernost_udaju_id] => S
[popis] => Wire electrical discharge machining (WEDM) is an unconventional technology that is
indispensable in almost all industries. However, due to its energy demands, the effort is
to maximize the cutting speed with an emphasis on maintaining the quality of
machined surfaces, which also often contain a number of defects in the form of cracks
or burnt cavities. For this reason, the aim of this study was to find the optimum setting
of the machine parameters using a design of experiment consisting of 33 rounds, with
the material of pure molybdenum being examined. An extensive analysis of all
machined samples was performed in terms of defects occurrence in the surface and
subsurface layers, the analysis of topography and morphology including 3D surface
reliefs, the analysis of chemical composition with dependence on diffusion processes
and measurement of residual stress in the workpieces.
[popis_orig] => Wire electrical discharge machining (WEDM) is an unconventional technology that is
indispensable in almost all industries. However, due to its energy demands, the effort is
to maximize the cutting speed with an emphasis on maintaining the quality of
machined surfaces, which also often contain a number of defects in the form of cracks
or burnt cavities. For this reason, the aim of this study was to find the optimum setting
of the machine parameters using a design of experiment consisting of 33 rounds, with
the material of pure molybdenum being examined. An extensive analysis of all
machined samples was performed in terms of defects occurrence in the surface and
subsurface layers, the analysis of topography and morphology including 3D surface
reliefs, the analysis of chemical composition with dependence on diffusion processes
and measurement of residual stress in the workpieces.
[klicova_slova] => WEDM; Electrical discharge machining; pure molybdenum; Design of experiment;
cracks; machining parameters
[klicova_slova_orig] => WEDM; Electrical discharge machining; pure molybdenum; Design of experiment;
cracks; machining parameters
[url] => https://doi.org/10.1016/j.measurement.2020.108010
[oecd_obor_id] => 20301
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[odpovedny_utvar_nazev] => Institute of Manufacturing Technology
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[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
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[vycet_osob] => MOURALOVÁ, K.; BENEŠ, L.; PROKEŠ, T.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; FRIES, J.
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[kod_doi] => 10.1016/j.measurement.2020.108010
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[korespondencni_autor] =>
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[znamka] =>
[kategorie_nazev] => Publication results
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[druh_popis] => Peer-reviewed article included in Web of Science database as as an “Article”, “Review” or “Letter”
[stav] => Approved
[vysledek_kategorie_id] => PV
[vysledek_system_kategorie_id] => PU
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[vlozil] => Informační systém Automat
[upravil] => Informační systém Automat
[ins_uid] => 999999
[upd_uid] => 999999
[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
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[identifikator] => ISSN 0263-2241
[identifikator_popis] => ISSN - MEASUREMENT (GB)
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[riv_dodavka_oznaceni] => RIV21-MSM-26210___
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[citace_text] => MOURALOVÁ, K.; BENEŠ, L.; PROKEŠ, T.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; FRIES, J. Machining of pure molybdenum using WEDM. MEASUREMENT, 2020, vol. 2020, no. 163, p. 1-13. ISSN: 0263-2241.
[citace_html] => MOURALOVÁ, K.; BENEŠ, L.; PROKEŠ, T.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; FRIES, J. Machining of pure molybdenum using WEDM. MEASUREMENT, 2020, vol. 2020, no. 163, p. 1-13. ISSN: 0263-2241.
[citace_rtf] =>
[citace_bibtex] => @article{BUT164023,
author="Kateřina {Mouralová} and Libor {Beneš} and Tomáš {Prokeš} and Josef {Bednář} and Radim {Zahradníček} and Jiří {Fries}",
title="Machining of pure molybdenum using WEDM",
journal="MEASUREMENT",
year="2020",
volume="2020",
number="163",
pages="1--13",
doi="10.1016/j.measurement.2020.108010",
issn="0263-2241",
url="https://doi.org/10.1016/j.measurement.2020.108010"
}
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[nazev_en] => Machining of pure molybdenum using WEDM
[popis_en] => Wire electrical discharge machining (WEDM) is an unconventional technology that is
indispensable in almost all industries. However, due to its energy demands, the effort is
to maximize the cutting speed with an emphasis on maintaining the quality of
machined surfaces, which also often contain a number of defects in the form of cracks
or burnt cavities. For this reason, the aim of this study was to find the optimum setting
of the machine parameters using a design of experiment consisting of 33 rounds, with
the material of pure molybdenum being examined. An extensive analysis of all
machined samples was performed in terms of defects occurrence in the surface and
subsurface layers, the analysis of topography and morphology including 3D surface
reliefs, the analysis of chemical composition with dependence on diffusion processes
and measurement of residual stress in the workpieces.
[klicova_slova_en] => WEDM; Electrical discharge machining; pure molybdenum; Design of experiment;
cracks; machining parameters
[vysledek_datum] => 2020-05-22T00:00:00+02:00
)
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(
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[nazev] => G4Killer web application: a tool to design G-quadruplex mutations
[nazev_orig] => G4Killer web application: a tool to design G-quadruplex mutations
[duvernost_udaju_id] => S
[popis] => G-quadruplexes (G4) are important regulatory non-B DNA structures with therapeutic potential. A tool for rational design of mutations leading to decreased propensity for G4 formation should be useful in studying G4 functions. Although tools exist for G4 prediction, no easily accessible tool for the rational design of G4 mutations has been available. RESULTS: We developed a web-based tool termed G4Killer that is based on the G4Hunter algorithm. This new tool is a platform-independent and user-friendly application to design mutations crippling G4 propensity in a parsimonious way (i.e., keeping the primary sequence as close as possible to the original one). The tool is integrated into our DNA analyzer server and allows for generating mutated DNA sequences having the desired lowered G4Hunter score with minimal mutation steps. AVAILABILITY AND IMPLEMENTATION: The G4Killer web tool can be accessed at: http://bioinformatics.ibp.cz. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online. © The Author(s) 2020. Published by Oxford University Press.
[popis_orig] => G-quadruplexes (G4) are important regulatory non-B DNA structures with therapeutic potential. A tool for rational design of mutations leading to decreased propensity for G4 formation should be useful in studying G4 functions. Although tools exist for G4 prediction, no easily accessible tool for the rational design of G4 mutations has been available. RESULTS: We developed a web-based tool termed G4Killer that is based on the G4Hunter algorithm. This new tool is a platform-independent and user-friendly application to design mutations crippling G4 propensity in a parsimonious way (i.e., keeping the primary sequence as close as possible to the original one). The tool is integrated into our DNA analyzer server and allows for generating mutated DNA sequences having the desired lowered G4Hunter score with minimal mutation steps. AVAILABILITY AND IMPLEMENTATION: The G4Killer web tool can be accessed at: http://bioinformatics.ibp.cz. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online. © The Author(s) 2020. Published by Oxford University Press.
[klicova_slova] => G4Killer, G-quadruplex, web application
[klicova_slova_orig] => G4Killer, G-quadruplex, web application
[url] => https://academic.oup.com/bioinformatics/article/36/10/3246/5716328
[oecd_obor_id] => 20205
[odpovedny_utvar_id] => 207
[odpovedny_utvar_nazev] => Institute of Automation and Computer Science
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[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
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[citace_text] => BRÁZDA, V.; KOLOMAZNÍK, J.; MERGNY, J.; ŠŤASTNÝ, J. G4Killer web application: a tool to design G-quadruplex mutations. BIOINFORMATICS, 2020, vol. 36, no. 10, p. 3246-3247. ISSN: 1367-4803.
[citace_html] => BRÁZDA, V.; KOLOMAZNÍK, J.; MERGNY, J.; ŠŤASTNÝ, J. G4Killer web application: a tool to design G-quadruplex mutations. BIOINFORMATICS, 2020, vol. 36, no. 10, p. 3246-3247. ISSN: 1367-4803.
[citace_rtf] =>
[citace_bibtex] => @article{BUT164187,
author="Václav {Brázda} and Jan {Kolomazník} and Jean-Louis {Mergny} and Jiří {Šťastný}",
title="G4Killer web application: a tool to design G-quadruplex mutations",
journal="BIOINFORMATICS",
year="2020",
volume="36",
number="10",
pages="3246--3247",
doi="10.1093/bioinformatics/btaa057",
issn="1367-4803",
url="https://academic.oup.com/bioinformatics/article/36/10/3246/5716328"
}
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[nazev_en] => G4Killer web application: a tool to design G-quadruplex mutations
[popis_en] => G-quadruplexes (G4) are important regulatory non-B DNA structures with therapeutic potential. A tool for rational design of mutations leading to decreased propensity for G4 formation should be useful in studying G4 functions. Although tools exist for G4 prediction, no easily accessible tool for the rational design of G4 mutations has been available. RESULTS: We developed a web-based tool termed G4Killer that is based on the G4Hunter algorithm. This new tool is a platform-independent and user-friendly application to design mutations crippling G4 propensity in a parsimonious way (i.e., keeping the primary sequence as close as possible to the original one). The tool is integrated into our DNA analyzer server and allows for generating mutated DNA sequences having the desired lowered G4Hunter score with minimal mutation steps. AVAILABILITY AND IMPLEMENTATION: The G4Killer web tool can be accessed at: http://bioinformatics.ibp.cz. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online. © The Author(s) 2020. Published by Oxford University Press.
[klicova_slova_en] => G4Killer, G-quadruplex, web application
[vysledek_datum] => 2020-05-15T00:00:00+02:00
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(
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[nazev] => Study of micro structural material changes after WEDM based on TEM lamella analysis
[nazev_orig] => Study of micro structural material changes after WEDM based on TEM lamella analysis
[duvernost_udaju_id] => S
[popis] => Wire electrical discharge machining is an unconventional machining technology that is crucial in many industries. The surface quality of the machined parts is carefully monitored, but the condition of the subsurface layer also plays a crucial role, especially in case of defects occurrence such as cracks or burnt cavities. The subsurface layer of individual materials is affected differently due to wire electrical discharge machining. For this reason, this study was carried out focusing on a detailed analysis of transmission electron microscope (TEM) lamellae made of Ti-6Al-4V titanium alloy, AlZn6Mg2Cu aluminium alloy, pure molybdenum, Creusabro 4800 steel, and Hardox 400 steel. The attention was first of all paid to the concentration and distribution of individual elements in the recast layer and also in the base material, which was often affected by Wire electrical discharge machining. Further, a diffraction analysis was performed for each TEM lamella in the adhesive area and in the area of the base material. In order to assess the macro-effects on the machined material, the analysis of the topography of the machined surfaces and the morphology analysis were performed using electron microscopy.
[popis_orig] => Wire electrical discharge machining is an unconventional machining technology that is crucial in many industries. The surface quality of the machined parts is carefully monitored, but the condition of the subsurface layer also plays a crucial role, especially in case of defects occurrence such as cracks or burnt cavities. The subsurface layer of individual materials is affected differently due to wire electrical discharge machining. For this reason, this study was carried out focusing on a detailed analysis of transmission electron microscope (TEM) lamellae made of Ti-6Al-4V titanium alloy, AlZn6Mg2Cu aluminium alloy, pure molybdenum, Creusabro 4800 steel, and Hardox 400 steel. The attention was first of all paid to the concentration and distribution of individual elements in the recast layer and also in the base material, which was often affected by Wire electrical discharge machining. Further, a diffraction analysis was performed for each TEM lamella in the adhesive area and in the area of the base material. In order to assess the macro-effects on the machined material, the analysis of the topography of the machined surfaces and the morphology analysis were performed using electron microscopy.
[klicova_slova] => WEDM; electrical discharge machining; microstructure; TEM lamella; recast layer; topography; morphology
[klicova_slova_orig] => WEDM; electrical discharge machining; microstructure; TEM lamella; recast layer; topography; morphology
[url] => https://www.mdpi.com/2075-4701/10/7/949/htm
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[citace_text] => MOURALOVÁ, K.; ZAHRADNÍČEK, R.; BENEŠ, L.; PROKEŠ, T.; HRDÝ, R.; FRIES, J. Study of micro structural material changes after WEDM based on TEM lamella analysis. Metals, 2020, vol. 10, no. 7, p. 1-21. ISSN: 2075-4701.
[citace_html] => MOURALOVÁ, K.; ZAHRADNÍČEK, R.; BENEŠ, L.; PROKEŠ, T.; HRDÝ, R.; FRIES, J. Study of micro structural material changes after WEDM based on TEM lamella analysis. Metals, 2020, vol. 10, no. 7, p. 1-21. ISSN: 2075-4701.
[citace_rtf] =>
[citace_bibtex] => @article{BUT164200,
author="Kateřina {Mouralová} and Radim {Zahradníček} and Libor {Beneš} and Tomáš {Prokeš} and Radim {Hrdý} and Jiří {Fries}",
title="Study of micro structural material changes after WEDM based on TEM lamella analysis",
journal="Metals",
year="2020",
volume="10",
number="7",
pages="1--21",
doi="10.3390/met10070949",
url="https://www.mdpi.com/2075-4701/10/7/949/htm"
}
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[oecd_tree_obor_id] => 20300
[oecd_tree_obor_nazev] => 2.3 Mechanical engineering
[oecd_tree_podobor_id] => 20301
[oecd_tree_podobor_nazev] => Mechanical engineering
[poznamka_metriky] =>
[nazev_en] => Study of micro structural material changes after WEDM based on TEM lamella analysis
[popis_en] => Wire electrical discharge machining is an unconventional machining technology that is crucial in many industries. The surface quality of the machined parts is carefully monitored, but the condition of the subsurface layer also plays a crucial role, especially in case of defects occurrence such as cracks or burnt cavities. The subsurface layer of individual materials is affected differently due to wire electrical discharge machining. For this reason, this study was carried out focusing on a detailed analysis of transmission electron microscope (TEM) lamellae made of Ti-6Al-4V titanium alloy, AlZn6Mg2Cu aluminium alloy, pure molybdenum, Creusabro 4800 steel, and Hardox 400 steel. The attention was first of all paid to the concentration and distribution of individual elements in the recast layer and also in the base material, which was often affected by Wire electrical discharge machining. Further, a diffraction analysis was performed for each TEM lamella in the adhesive area and in the area of the base material. In order to assess the macro-effects on the machined material, the analysis of the topography of the machined surfaces and the morphology analysis were performed using electron microscopy.
[klicova_slova_en] => WEDM; electrical discharge machining; microstructure; TEM lamella; recast layer; topography; morphology
[vysledek_datum] => 2020-06-07T00:00:00+02:00
)
[10] => Array
(
[vysledek_id] => 164350
[vysledek_druh_id] => ARTWOS
[ex_vysledek_id] => 136712
[vysledek_rok] => 2020
[nazev] => Precision Machining of Nimonic C 263 Super AlloyUsing WEDM
[nazev_orig] => Precision Machining of Nimonic C 263 Super AlloyUsing WEDM
[duvernost_udaju_id] => S
[popis] => Wire electrical discharge machining (WEDM) is an unconventional and very efficient technology for precision machining of the Nimonic C 263 super alloy, which is very widespread, especially in the energy, aerospace and automotive industries. Due to electrical discharge, defects in the form of cracks or burned cavities often occur on the machined surfaces, which negatively affect the correct functionality and service life of the manufactured components. To increase the efficiency of the machining of Nimonic C 263 using WEDM, in this study, extensive design of experiments was carried out, monitoring input factors in the form of machine parameters like Pulse off time, Gap voltage, Discharge current, Pulse on time and Wire feed, the output of which was comprehensive information about the behaviour of such machined surfaces, which allowed the optimization of the entire machining process. Thus, the optimization of the Cutting speed was performed in relation to the quality of the machined surface and the machining accuracy, as well as an analysis of the chemical composition of the machined surfaces and a detailed analysis of the lamella using a transmission electron microscope. A detailed study of the occurrence of surface or subsurface defects was also included. It was found that with the help of complex optimization tools, it is possible to significantly increase the efficiency of the machining of the Nimonic C 263 super alloy and achieve both financial savings in the form of shortened machine time and increasing the quality of machined surfaces.
[popis_orig] => Wire electrical discharge machining (WEDM) is an unconventional and very efficient technology for precision machining of the Nimonic C 263 super alloy, which is very widespread, especially in the energy, aerospace and automotive industries. Due to electrical discharge, defects in the form of cracks or burned cavities often occur on the machined surfaces, which negatively affect the correct functionality and service life of the manufactured components. To increase the efficiency of the machining of Nimonic C 263 using WEDM, in this study, extensive design of experiments was carried out, monitoring input factors in the form of machine parameters like Pulse off time, Gap voltage, Discharge current, Pulse on time and Wire feed, the output of which was comprehensive information about the behaviour of such machined surfaces, which allowed the optimization of the entire machining process. Thus, the optimization of the Cutting speed was performed in relation to the quality of the machined surface and the machining accuracy, as well as an analysis of the chemical composition of the machined surfaces and a detailed analysis of the lamella using a transmission electron microscope. A detailed study of the occurrence of surface or subsurface defects was also included. It was found that with the help of complex optimization tools, it is possible to significantly increase the efficiency of the machining of the Nimonic C 263 super alloy and achieve both financial savings in the form of shortened machine time and increasing the quality of machined surfaces.
[klicova_slova] => WEDM; wire electrical discharge machining; nimonic; design of experiment;
machining parameters
[klicova_slova_orig] => WEDM; wire electrical discharge machining; nimonic; design of experiment;
machining parameters
[url] => https://www.mdpi.com/2079-6412/10/6/590
[oecd_obor_id] => 20301
[odpovedny_utvar_id] => 178
[odpovedny_utvar_nazev] => Institute of Manufacturing Technology
[odpovedny_utvar_zkratka] => IMT
[nadrazena_soucast_id] => 4
[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
[originalni_jazyk] => en
[schvalil_id] => 85907
[schvaleno] => 2021-09-15
[vykazovat_riv] => 1
[vykazovat_riv_zmeny] => 1
[slozka_id] => 101726
[posledni_diagnostika] =>
[vycet_osob] => MOURALOVÁ, K.; BENEŠ, L.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; PROKEŠ, T.; FIALA, Z.; FRIES, J.
[pocet_tvurcu] => 8
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[poznamka] =>
[typ_nazev] =>
[kod_doi] => 10.3390/coatings10060590
[kod_dspace] => 11012/193104
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[pocet_zaznamu] =>
[zverejneno] => 1
[prvni_autor] =>
[korespondencni_autor] =>
[posledni_autor] =>
[znamka] =>
[kategorie_nazev] => Publication results
[druh_nazev] => WoS Article
[druh_popis] => Peer-reviewed article included in Web of Science database as as an “Article”, “Review” or “Letter”
[stav] => Approved
[vysledek_kategorie_id] => PV
[vysledek_system_kategorie_id] => PU
[vysledek_stav_id] => 3
[vlozil] => Informační systém Automat
[upravil] => Informační systém Automat
[ins_uid] => 999999
[upd_uid] => 999999
[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] => ISSN 2079-6412
[identifikator_popis] => ISSN - Coatings, MDPI (CH)
[riv_dodavka_id] => 2549
[riv_dodavka_oznaceni] => RIV21-MSM-26210___
[riv_dodavka_rok] => 2021
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[diagnostika_pocet_chyba] => 0
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[citace_text] => MOURALOVÁ, K.; BENEŠ, L.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; PROKEŠ, T.; FIALA, Z.; FRIES, J. Precision Machining of Nimonic C 263 Super AlloyUsing WEDM. Coatings, MDPI, 2020, vol. 10, no. 6, p. 1-20. ISSN: 2079-6412.
[citace_html] => MOURALOVÁ, K.; BENEŠ, L.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; PROKEŠ, T.; FIALA, Z.; FRIES, J. Precision Machining of Nimonic C 263 Super AlloyUsing WEDM. Coatings, MDPI, 2020, vol. 10, no. 6, p. 1-20. ISSN: 2079-6412.
[citace_rtf] =>
[citace_bibtex] => @article{BUT164350,
author="Kateřina {Mouralová} and Libor {Beneš} and Josef {Bednář} and Radim {Zahradníček} and Tomáš {Prokeš} and Zdeněk {Fiala} and Jiří {Fries}",
title="Precision Machining of Nimonic C 263 Super AlloyUsing WEDM",
journal="Coatings, MDPI",
year="2020",
volume="10",
number="6",
pages="1--20",
doi="10.3390/coatings10060590",
issn="2079-6412",
url="https://www.mdpi.com/2079-6412/10/6/590"
}
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[oecd_tree_obor_nazev] => 2.3 Mechanical engineering
[oecd_tree_podobor_id] => 20301
[oecd_tree_podobor_nazev] => Mechanical engineering
[poznamka_metriky] =>
[nazev_en] => Precision Machining of Nimonic C 263 Super AlloyUsing WEDM
[popis_en] => Wire electrical discharge machining (WEDM) is an unconventional and very efficient technology for precision machining of the Nimonic C 263 super alloy, which is very widespread, especially in the energy, aerospace and automotive industries. Due to electrical discharge, defects in the form of cracks or burned cavities often occur on the machined surfaces, which negatively affect the correct functionality and service life of the manufactured components. To increase the efficiency of the machining of Nimonic C 263 using WEDM, in this study, extensive design of experiments was carried out, monitoring input factors in the form of machine parameters like Pulse off time, Gap voltage, Discharge current, Pulse on time and Wire feed, the output of which was comprehensive information about the behaviour of such machined surfaces, which allowed the optimization of the entire machining process. Thus, the optimization of the Cutting speed was performed in relation to the quality of the machined surface and the machining accuracy, as well as an analysis of the chemical composition of the machined surfaces and a detailed analysis of the lamella using a transmission electron microscope. A detailed study of the occurrence of surface or subsurface defects was also included. It was found that with the help of complex optimization tools, it is possible to significantly increase the efficiency of the machining of the Nimonic C 263 super alloy and achieve both financial savings in the form of shortened machine time and increasing the quality of machined surfaces.
[klicova_slova_en] => WEDM; wire electrical discharge machining; nimonic; design of experiment;
machining parameters
[vysledek_datum] => 2020-06-24T00:00:00+02:00
)
[11] => Array
(
[vysledek_id] => 164571
[vysledek_druh_id] => REV
[ex_vysledek_id] => 136879
[vysledek_rok] => 2020
[nazev] => Elektrodiagnostika jako součást multiparametrické diagnostiky v průmyslové praxi
[nazev_orig] => Elektrodiagnostika jako součást multiparametrické diagnostiky v průmyslové praxi
[duvernost_udaju_id] => S
[popis] => Článek je zaměřen na elektrodiagnostiku a další diagnostické metody jako součást multiparametrické diagnostiky. V úvodní části je obecně pojednáno o technické diagnostice, jejím dělení a objasnění pojmu multiparametrická diagnostika. Dále je popsán objekt diagnostiky – dieselelektrické soustrojí a jsou stručně rozebrány aspekty s vlivem na jeho chování. Podstatná část článku je věnována příkladu použití multiparametrické diagnostiky s důrazem na rozbor a zobecnění výsledků. Nechybí návrh opatření pro technickou praxi a stručný závěr.
[popis_orig] => Článek je zaměřen na elektrodiagnostiku a další diagnostické metody jako součást multiparametrické diagnostiky. V úvodní části je obecně pojednáno o technické diagnostice, jejím dělení a objasnění pojmu multiparametrická diagnostika. Dále je popsán objekt diagnostiky – dieselelektrické soustrojí a jsou stručně rozebrány aspekty s vlivem na jeho chování. Podstatná část článku je věnována příkladu použití multiparametrické diagnostiky s důrazem na rozbor a zobecnění výsledků. Nechybí návrh opatření pro technickou praxi a stručný závěr.
[klicova_slova] => Elektrodiagnostika; diagnostické metody; multiparametrická diagnostika
[klicova_slova_orig] => Elektrodiagnostika; diagnostické metody; multiparametrická diagnostika
[url] =>
[oecd_obor_id] => 20205
[odpovedny_utvar_id] => 207
[odpovedny_utvar_nazev] => Institute of Automation and Computer Science
[odpovedny_utvar_zkratka] => IACS
[nadrazena_soucast_id] => 4
[nadrazena_soucast_zkratka] => FME
[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
[originalni_jazyk] => cs
[schvalil_id] => 1508
[schvaleno] => 2020-07-23
[vykazovat_riv] => 1
[vykazovat_riv_zmeny] => 1
[slozka_id] =>
[posledni_diagnostika] =>
[vycet_osob] => HAMMER, M.; NAHODIL, P.
[pocet_tvurcu] => 2
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[poznamka] =>
[typ_nazev] =>
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[zverejneno] => 1
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[korespondencni_autor] =>
[posledni_autor] =>
[znamka] =>
[kategorie_nazev] => Publication results
[druh_nazev] => Article - other
[druh_popis] => Article - other
[stav] => Approved
[vysledek_kategorie_id] => PV
[vysledek_system_kategorie_id] => PU
[vysledek_stav_id] => 3
[vlozil] => Informační systém Automat
[upravil] => Informační systém Automat
[ins_uid] => 999999
[upd_uid] => 999999
[ins_ts] => 2025-09-22
[upd_ts] => 2025-09-22
[status] => 9
[identifikator] =>
[identifikator_popis] =>
[riv_dodavka_id] => 2549
[riv_dodavka_oznaceni] => RIV21-MSM-26210___
[riv_dodavka_rok] => 2021
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[diagnostika_pocet_upozorneni] => 0
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[citace_text] => HAMMER, M.; NAHODIL, P. Elektrodiagnostika jako součást multiparametrické diagnostiky v průmyslové praxi. Český Těšín: Trade Media International,s.r.o, 2020. s. 11-15.
[citace_html] => HAMMER, M.; NAHODIL, P. Elektrodiagnostika jako součást multiparametrické diagnostiky v průmyslové praxi. Český Těšín: Trade Media International,s.r.o, 2020. s. 11-15.
[citace_rtf] =>
[citace_bibtex] => @misc{BUT164571,
author="Miloš {Hammer} and Petr {Nahodil}",
title="Elektrodiagnostika jako součást multiparametrické diagnostiky v průmyslové praxi",
year="2020",
pages="11--15",
publisher="Trade Media International,s.r.o",
address="Český Těšín",
note="Article - other"
}
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[oecd_tree_oblast_nazev] => 2. Engineering and Technology
[oecd_tree_obor_id] => 20200
[oecd_tree_obor_nazev] => 2.2 Electrical engineering, Electronic engineering, Information engineering
[oecd_tree_podobor_id] => 20205
[oecd_tree_podobor_nazev] => Automation and control systems
[poznamka_metriky] =>
[nazev_en] => Electrodiagnostics as a part of multiparametric diagnostics in industrial practice
[popis_en] => The article is focused on electrodiagnostics and other diagnostic methods as a part of multiparametric diagnostics. The introductory part generally discusses technical diagnostics, its division and clarification of the term multiparametric diagnostics. Furthermore, the object of diagnostics - diesel-electric set is described and aspects with influence on its behavior are briefly analyzed. A substantial part of the article is devoted to the example of the use of multiparametric diagnostics with emphasis on the analysis and generalization of results. There is also a draft of measures for technical practice and a brief conclusion.
[klicova_slova_en] => Electrodiagnostics; diagnostic methods; multiparametric diagnostics
[vysledek_datum] => 2020-06-01T00:00:00+02:00
)
[12] => Array
(
[vysledek_id] => 164599
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[nazev] => Legislation-induced planning of waste processing infrastructure: A case study of the Czech Republic
[nazev_orig] => Legislation-induced planning of waste processing infrastructure: A case study of the Czech Republic
[duvernost_udaju_id] => S
[popis] => Trends in the treatment of municipal solid waste are changing worldwide. In the European Union, one of the largest economies in the world, the waste treatment and management among the member states vary significantly. To support and promote environmentally friendly waste management, the European Union issued directives commonly called the Circular Economy Package. This legislative is designed to accelerate the transition to a cleaner future. It gives an obligation to member states to meet specific landfilling and recycling targets. To reach these ambitious goals will be a challenging task, especially for the member states with less developed waste management systems. An approach using multi-stage stochastic programming is suggested for solving such a problem. The developed model considers current material recovery rates and trends in municipal waste, while uncertain waste production is forecasted by possible scenarios. The model enables sequential decision-making and assessment of various strategies for different future scenarios with specific years, locations, technologies and capacities for the establishment of the waste processing infrastructure. The utilization of the model and its computational tractability is demonstrated in a case study of the Czech Republic.
[popis_orig] => Trends in the treatment of municipal solid waste are changing worldwide. In the European Union, one of the largest economies in the world, the waste treatment and management among the member states vary significantly. To support and promote environmentally friendly waste management, the European Union issued directives commonly called the Circular Economy Package. This legislative is designed to accelerate the transition to a cleaner future. It gives an obligation to member states to meet specific landfilling and recycling targets. To reach these ambitious goals will be a challenging task, especially for the member states with less developed waste management systems. An approach using multi-stage stochastic programming is suggested for solving such a problem. The developed model considers current material recovery rates and trends in municipal waste, while uncertain waste production is forecasted by possible scenarios. The model enables sequential decision-making and assessment of various strategies for different future scenarios with specific years, locations, technologies and capacities for the establishment of the waste processing infrastructure. The utilization of the model and its computational tractability is demonstrated in a case study of the Czech Republic.
[klicova_slova] => Waste management planning; Circular economy; Multi-stage optimization; Sustainable processing infrastructure; Renewable energy; Waste-to-energy
[klicova_slova_orig] => Waste management planning; Circular economy; Multi-stage optimization; Sustainable processing infrastructure; Renewable energy; Waste-to-energy
[url] => https://www.sciencedirect.com/science/article/pii/S136403212030349X
[oecd_obor_id] => 20701
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[nadrazena_soucast_nazev] => Faculty of Mechanical Engineering
[originalni_jazyk] => en
[schvalil_id] => 200135
[schvaleno] => 2021-03-09
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[vycet_osob] => KŮDELA, J.; SMEJKALOVÁ, V.; ŠOMPLÁK, R.; NEVRLÝ, V.
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[kod_doi] => 10.1016/j.rser.2020.110058
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[identifikator] => ISSN 1364-0321
[identifikator_popis] => ISSN - RENEWABLE & SUSTAINABLE ENERGY REVIEWS (US)
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[citace_text] => KŮDELA, J.; SMEJKALOVÁ, V.; ŠOMPLÁK, R.; NEVRLÝ, V. Legislation-induced planning of waste processing infrastructure: A case study of the Czech Republic. RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2020, vol. 132, no. Oct 2020, p. 1-14. ISSN: 1364-0321.
[citace_html] => KŮDELA, J.; SMEJKALOVÁ, V.; ŠOMPLÁK, R.; NEVRLÝ, V. Legislation-induced planning of waste processing infrastructure: A case study of the Czech Republic. RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2020, vol. 132, no. Oct 2020, p. 1-14. ISSN: 1364-0321.
[citace_rtf] =>
[citace_bibtex] => @article{BUT164599,
author="Jakub {Kůdela} and Veronika {Smejkalová} and Radovan {Šomplák} and Vlastimír {Nevrlý}",
title="Legislation-induced planning of waste processing infrastructure: A case study of the Czech Republic",
journal="RENEWABLE & SUSTAINABLE ENERGY REVIEWS",
year="2020",
volume="132",
number="Oct 2020",
pages="1--14",
doi="10.1016/j.rser.2020.110058",
issn="1364-0321",
url="https://www.sciencedirect.com/science/article/pii/S136403212030349X"
}
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[oecd_tree_oblast_nazev] => 2. Engineering and Technology
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[oecd_tree_obor_nazev] => 2.7 Environmental engineering
[oecd_tree_podobor_id] => 20701
[oecd_tree_podobor_nazev] => Environmental and geological engineering, geotechnics
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[nazev_en] => Legislation-induced planning of waste processing infrastructure: A case study of the Czech Republic
[popis_en] => Trends in the treatment of municipal solid waste are changing worldwide. In the European Union, one of the largest economies in the world, the waste treatment and management among the member states vary significantly. To support and promote environmentally friendly waste management, the European Union issued directives commonly called the Circular Economy Package. This legislative is designed to accelerate the transition to a cleaner future. It gives an obligation to member states to meet specific landfilling and recycling targets. To reach these ambitious goals will be a challenging task, especially for the member states with less developed waste management systems. An approach using multi-stage stochastic programming is suggested for solving such a problem. The developed model considers current material recovery rates and trends in municipal waste, while uncertain waste production is forecasted by possible scenarios. The model enables sequential decision-making and assessment of various strategies for different future scenarios with specific years, locations, technologies and capacities for the establishment of the waste processing infrastructure. The utilization of the model and its computational tractability is demonstrated in a case study of the Czech Republic.
[klicova_slova_en] => Waste management planning; Circular economy; Multi-stage optimization; Sustainable processing infrastructure; Renewable energy; Waste-to-energy
[vysledek_datum] => 2020-07-30T00:00:00+02:00
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[title] => IEEE Congress on Evolutionary Computation (IEEE CEC)
[typ] => EV
[year] => 2019
[id_vav] => 162170
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[1] => Array
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[quotations] => MATOUŠEK, R.; HŮLKA, T.; DOBROVSKÝ, L.; KŮDELA, J.
[title] => Sum Epsilon-Tube Error Fitness Function Design for GP Symbolic Regression: Preliminary Study
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[year] => 2020
[id_vav] => 163291
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[title] => 2019 International Conference on Control, Artificial Intelligence, Robotics and Optimization (ICCAIRO 2019)
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[id_vav] => 163292
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[quotations] => MOURALOVÁ, K.; BENEŠ, L.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; PROKEŠ, T.; FRIES, J.
[title] => Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM
[typ] => PV
[year] => 2020
[id_vav] => 163597
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[quotations] => VDOLEČEK, F.
[title] => New definitions of base units valid from 2019
[typ] => PV
[year] => 2020
[id_vav] => 163859
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[quotations] => KŮDELA, J.
[title] => Minimum-Volume Covering Ellipsoids: Improving the Efficiency of the Wolfe-Atwood Algorithm for Large-Scale Instances by Pooling and Batching
[typ] => PV
[year] => 2019
[id_vav] => 163938
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[title] => Pool & Discard Algorithm for Chance Constrained Optimization Problems
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[id_vav] => 163939
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[quotations] => MOURALOVÁ, K.; BENEŠ, L.; PROKEŠ, T.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; FRIES, J.
[title] => Machining of pure molybdenum using WEDM
[typ] => PV
[year] => 2020
[id_vav] => 164023
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[quotations] => BRÁZDA, V.; KOLOMAZNÍK, J.; MERGNY, J.; ŠŤASTNÝ, J.
[title] => G4Killer web application: a tool to design G-quadruplex mutations
[typ] => PV
[year] => 2020
[id_vav] => 164187
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[quotations] => MOURALOVÁ, K.; ZAHRADNÍČEK, R.; BENEŠ, L.; PROKEŠ, T.; HRDÝ, R.; FRIES, J.
[title] => Study of micro structural material changes after WEDM based on TEM lamella analysis
[typ] => PV
[year] => 2020
[id_vav] => 164200
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[quotations] => MOURALOVÁ, K.; BENEŠ, L.; BEDNÁŘ, J.; ZAHRADNÍČEK, R.; PROKEŠ, T.; FIALA, Z.; FRIES, J.
[title] => Precision Machining of Nimonic C 263 Super AlloyUsing WEDM
[typ] => PV
[year] => 2020
[id_vav] => 164350
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[quotations] => HAMMER, M.; NAHODIL, P.
[title] => Elektrodiagnostika jako součást multiparametrické diagnostiky v průmyslové praxi
[typ] => PV
[year] => 2020
[id_vav] => 164571
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[quotations] => KŮDELA, J.; SMEJKALOVÁ, V.; ŠOMPLÁK, R.; NEVRLÝ, V.
[title] => Legislation-induced planning of waste processing infrastructure: A case study of the Czech Republic
[typ] => PV
[year] => 2020
[id_vav] => 164599
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Results of Research and Development ▪ FME, BUT
Results of Research and Development
Publication results
Year: 2020
MATOUŠEK, R.
HŮLKA, T.
DOBROVSKÝ, L.
KŮDELA, J.
Publication results
Year: 2020
MOURALOVÁ, K.
BENEŠ, L.
BEDNÁŘ, J.
ZAHRADNÍČEK, R.
PROKEŠ, T.
FRIES, J.
Publication results
Year: 2020
VDOLEČEK, F.
Publication results
Year: 2019
KŮDELA, J.
Publication results
Year: 2020
KŮDELA, J.
POPELA, P.
Publication results
Year: 2020
MOURALOVÁ, K.
BENEŠ, L.
PROKEŠ, T.
BEDNÁŘ, J.
ZAHRADNÍČEK, R.
FRIES, J.
Publication results
Year: 2020
BRÁZDA, V.
KOLOMAZNÍK, J.
MERGNY, J.
ŠŤASTNÝ, J.
Publication results
Year: 2020
MOURALOVÁ, K.
ZAHRADNÍČEK, R.
BENEŠ, L.
PROKEŠ, T.
HRDÝ, R.
FRIES, J.
Publication results
Year: 2020
MOURALOVÁ, K.
BENEŠ, L.
BEDNÁŘ, J.
ZAHRADNÍČEK, R.
PROKEŠ, T.
FIALA, Z.
FRIES, J.
Publication results
Year: 2020
HAMMER, M.
NAHODIL, P.
Publication results
Year: 2020
KŮDELA, J.
SMEJKALOVÁ, V.
ŠOMPLÁK, R.
NEVRLÝ, V.
Showed 1831–1845 from 2086 results