53,050 research outputs found
Scientometric Portrait of Nobel Laureate S. Chandrasekhar
Full text linkScientometric analysis of the publications productivity of Nobel Laureate S. Chandrasekhar is documented
Observations of Bºs→ψ(2S)η and Bº(s)→ψ(2S)π+π- decays
Full text linkFirst observations of the B0s
→ψ(2S)η, B0 →ψ(2S)π
+
π
− and B0s
→ψ(2S)π
+
π
− decays are made
using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in
proton–proton collisions at a centre-of-mass energy of
√
s = 7 TeV. The ratios of the branching fractions
of each of the ψ(2S) modes with respect to the corresponding J/ψ decays are
B(B0s
→ψ(2S)η)
÷
B(B0s
→J/ψη)
= 0.83± 0.14 (stat)±0.12 (syst) ±0.02 (B),
;
B(B0→ψ(2S)π
+
π
−
)
÷
B(B0→J/ψπ
+
π
−
)
= 0.56± 0.07 (stat)±0.05 (syst)± 0.01 (B),
;
B(B0s
→ψ(2S)π
+
π
−
)
÷
B(B0s
→J/ψπ
+
π
−
)
= 0.34± 0.04 (stat)±0.03 (syst)± 0.01 (B),
where the third uncertainty corresponds to the uncertainties of the dilepton branching fractions of the J/ψ
and ψ(2S) meson decays
Mýty a realita v procese s J. A. Baťom
No full textThe author of this paper deals with the retribution trial proceeding with J. A. Baťa, in 1947 at the National Court in Prague. Especially in recent years, questions related to this process raise again. There are many hypotheses that try to prove respectively point out the injustice and the political background of this case. Author argues against the violation of fundamental rights in criminal proceedings, procedural errors and predetermined and targeted punishment. The author looked at some of the most resonating hypothesis and tried to confirm or disprove its validity.Autorka sa v príspevku zaoberá retribučným procesom s J. A. Baťom, ktorý prebiehal v roku 1947 pred Národným súdom v Prahe. Najmä v posledných rokoch sa opäť vynárajú otázky, ktoré sa uvedeného procesu týkajú. Existuje veľké množstvo hypotéz, ktoré sa snažia dokázať resp. poukázať na nespravodlivosť a na politické pozadie konania. Polemizujú s porušovaním základných práv v trestnom konaní, s procesnými chybami a s vopred určeným a cieleným trestom. Autorka sa zamerala na niektoré, najviac rezonujúce hypotézy a snažila sa potvrdiť, či vyvrátiť ich správnosť
The Worldview and the Author´s (Self)Reflection in Czech Contemporary Historiography
No full textCílem studie je představit možnosti, jak na základě publikovaných autorských textů zkoumat světový názor historiků a historiček, zejména v oboru soudobých dějin, kde lze předpokládat vliv jejich hodnotového horizontu na interpretaci relativně nedávné minulosti. Autor nejprve vymezuje pojetí světového názoru vzhledem ke stanovenému záměru a zdůvodňuje analytické užití tohoto pojmu v historiografickém textu, v daném kontextu se také zamýšlí nad vztahem paměti, dějin a historiografie. Konstatuje, že poměrně málo českých historiků a historiček dosud reflektuje vztah (individuální či kolektivní) paměti a práce dějepisce, zvláště s ohledem na jeho pozici v současné společnosti, která bývá často redukována na roli objektivního „objevitele historické pravdy“. Taková (sebe)reflexe předpokládá přiznání vlivu individuálního světového názoru historika (komplexu názorů a postojů formovaných výchovou, vzděláním, vzpomínkami, generační příslušností a podobně) na jeho vědeckou činnost. Autor studie nabízí dvě možné a vzájemně se doplňující cesty k poznání historikova světového názoru: jednak prostřednictvím vlastních svědectví a prohlášení z jeho osobněji laděných textů a egodokumentů (eseje, rozhovory, vzpomínky, příspěvky na sociálních sítích), jednak analýzou jeho vědeckých textů (časopiseckých studií, knižních monografií, recenzí). Oba přístupy autor dokumentuje na konkrétních příkladech z produkce historiků a historiček českých soudobých dějin. V závěru studie pak nastiňuje cíle a smysl zkoumání historikova světového názoru.The aim of this study is to present the opportunities for research into the worldview of historians, especially historians focused on contemporary history, where it can be assumed that their set of values may influence their interpretation of the rela-tively recent past. The author first defines the notion of worldview and justifies the analytical use of this concept in historiographical texts. He also considers the relationship between memory, history and historiography in the given context. The author states that not many Czech historians have so far reflected on the relationship between (individual and collective) memory and the work of the historian, especially with regard to his or her position in contemporary society, which is often reduced to the role of an objective “discoverer of historical truth”. Such (self)reflection presupposes the acknowledgement of the influence of the historian’s individual worldview (a complex of opinions and attitudes shaped by upbringing, education, memories, generational affiliation and so on) on his or her scholarly activity. The author of the study offers two possible and complementary ways to learn about the historian’s worldview: first, through his or her own testimonies and statements from more personal texts and ego-documents (essays, interviews, memoirs or social me-dia posts), and second, through the analysis of his or her scholarly texts (journal studies, monographs and book reviews). The author demonstrates both approaches with concrete examples of works by historians of Czech contemporary history and concludes by outlining the aims and purpose of examining the historian’s worldview. © 2022, Institute of Contemporary History of the Czech Academy of Sciences. All rights reserved
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
with regard to author´s performance
No full textBakalářská práce na téma Porovnání inscenací Kouzelné flétny s přihlédnutím na své účinkování se soustředí na komparativní analýzu dvou různých zpracování Kouzelné flétny v režii Davida Radoka a Vladimíra Morávka ve Stavovském divadle v Praze. Práce představuje skladatele Wolfganga Amadea Mozarta, jeho život a dílo, dále pak libretistu Emanuela Schikanedera a okolnosti vzniku opery, a nakonec vlastní komparaci inscenací. Nejprve je vedle sebe postaveno celkové pojetí inscenací, poté jednotlivé divadelní složky – scéna, kostýmy, hudební nastudování, jazyk, taneční soubor a práce s režiséry. Přínosem je v první řadě skutečnost, že analýza tohoto rozsahu dosud nebyla provedena, ale také osobní angažovanost autorky, která vystupovala v obou inscenacích a může tak nabídnout cenné zkušenosti obohacené o osobní výpověď dirigentů a ostatních účinkujících.The bachelor thesis on Comparison of productions of The Magic Flute with regard to author´s performance focuses on a comparative analysis of two different adaptations of The Magic Flute directed by David Radok and Vladimír Morávek at the Estates Theatre in Prague. The thesis introduces the composer Wolfgang Amadeus Mozart, his life and work, then the librettist Emanuel Schikaneder and the circumstances of the opera's creation, and finally the actual comparison of the productions. Firstly the overall concept of the productions is juxtaposed, then the individual theatrical components – scene, costumes, musical staging, language, dance ensemble and work with the directors. The contribution is firstly the fact that an analysis on this scale has not been made before, and secondly the personal involvement of the author, who has performed in both productions and can thus offer valuable experience enriched by the personal testimony of the conductors and other performers.
Band Alignment and Electrical Investigations of Ultra-Thin Al2O3 on Si by E-beam Evaporation
No full textThe continuous downscaling leads the search of high-gate dielectrics. The films amorphous in nature offered good mechanical flexibility, smooth surfaces and better uniformity associated with low leakage current density. In this work, 16 nm thick amorphous Al2O3 films on silicon substrate are fabricated by E-beam evaporation. The high value of refractive index (1.76) extracted from ellipsometry analysis directs the deposition of compact film. The AFM analysis reveal a flat surface with small RMS surface roughness 1.5 angstrom. The band gap is extracted from O-1s electron loss spectra and was found 6.7 eV and band alignment of Al2O3/Si is derived from the UPS measurements. The films are incorporated in Metal Insulator -Semiconductor (MIS) capacitor to perform the electrical measurement. The flat band voltage (V-FB), dielectric constant () and oxide trapped charges (Q(ot)) extracted from high frequency (1 MHz) C-V curve are - 0.4 V, 8.4 and 2 x 10(11) cm(-2), respectively. The small flat band voltage - 0.4 V, narrow hysteresis and very little frequency dispersion suggest an exceptional good Al2O3/Si interface with small quantity of trapped charges in the oxide. The leakage current density was 4.27 x 10(-8) A/cm(2) at 1 V. The moderate dielectric constant and low leakage current density with ultra-smooth surface is quite useful towards its application in future CMOS and memory devices
Jean-Jacques Rousseau: Ethical dimension in author´s writings in context of his culture
No full textTato práce se zaměřuje na vybrané centrální filosofické pojmy autorovi filosofie v kontextu etickém a snaží se potvrdit či vyvrátit hypotézu, že autor svým přístupem redefinoval tyto, dnes již tradiční, filosofické pojmy, zejména pak ve srovnání k dobovému a diskursnímu proudu a pojetí těchto pojmů.ObhájenoThis paper focuses on chosen central concepts of author´s philosophy in context of ethics & the goal is to confirm or deny the proposition, that author redefines traditional philosophical concepts, mainly in comparison to contemporary thinking and discourse
Measurement of the CP-violating phase \phi s in Bs->J/\psi\pi+\pi- decays
Full text linkMeasurement of the mixing-induced CP-violating phase phi_s in Bs decays is of prime importance in probing new physics. Here 7421 +/- 105 signal events from the dominantly CP-odd final state J/\psi pi+ pi- are selected in 1/fb of pp collision data collected at sqrt{s} = 7 TeV with the LHCb detector. A time-dependent fit to the data yields a value of phi_s=-0.019^{+0.173+0.004}_{-0.174-0.003} rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found
- …
