76,076 research outputs found
Scientometric Portrait of Nobel Laureate S. Chandrasekhar
No full textScientometric analysis of the publications productivity of Nobel Laureate S. Chandrasekhar is documented
Formação de mudas de Acacia mangium: 1. resposta a calcário e a fósforo.
No full textCom o objetivo de avaliar o efeito da calagem e da adubação fosfatada para a formação de mudas de Acacia mangium, conduziu-se um ensaio em casa-de-vegetação, utilizando-se uma amostra sub-superficial de um Lva como substrato. Os tratamento foram gerados a partir da matriz experimental Plan Puebla 111, tendo como fonte para a calagem uma mistura de calcário dolomítico + Caco:j comercial (relação Ca : Mg de 4:1) e como fonte de P soluções de sais p.a. Adubações complementares com N, K, e S foram feitas após o período de incubação do solo. Após 70 dias de cultivo foram avaliados a altura de planta, diâmetro de caule e produção de matéria seca de folhas e ramos. Os modelos matemáticos ajustados para a produção de matéria seca total mostraram respostas lineares à adição de P ao solo, enquanto que para.a calagem não houve resposta. Os teores foliares de Ca e de Mg foram superiores aos verificados nos ramos das plantas. A absorção de Ca e de Mg pela espécie estudada foi dependente das doses de P aplicadas ao solo
Observations of Bºs→ψ(2S)η and Bº(s)→ψ(2S)π+π- decays
No full textFirst 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
Neoathripsodes holzenthali Dias, Quinteiro & Calor, 2015, new species
No full textNeoathripsodes holzenthali, new species (Figs. 2–3) Diagnosis. The new species differs from the type species of the genus by the following characters: Segment IX is long ventrally and short dorsally when observed in lateral view; segment X is broad basally and apically, with a constriction in the middle region in dorsal view. The superior appendages each have a truncate base in dorsal view. The phallus has a phallobase with a basodorsal spine projected dorsad and a pair of long dorsolateral parameres in lateral view. Adult. Length of each forewing 4.7–5.6 mm (n= 18); length of each hind wing 3.8–4.6 mm (n= 10). Head. Color dark brown (in alcohol). Antennae long, about twice as long as forewings. Maxillary palps dark brown, all segments subequal in length and width, except second segment which is 1 / 3 rd longer than the others. Labial palps dark brown, each 3 -segmented. Thorax. Dark brown; tibial spur formula 1,2,2; first pair of legs with apical tibial spur small; mid- and hind tibiae each with two apical spurs, one short and one long. Abdomen. Segments I–VIII subequal, without modifications. Male. Length of each forewing 4.8–5.6 mm (n= 10). Length of each hind wing 4.0– 4.6 mm (n= 10). Thorax. Forewings dark brown, with forks I and V (Fig. 2 A); fork I sessile; R 1 vein thickened in its distal half; veins R 2 + 3, R 4 + 5 and Cu 1 b very thick (Fig. 2 A); discoidal cell narrow, almost obliterated by thickened nature of R 2 + 3 and R 4 + 5 and sectoral crossvein (Fig. 2 A); crossveins r-m and m-cu present, fork V very deep, originating before mcu crossvein (Fig. 2 A). Hind wing dark brown, narrow, with forks I and V present, crossvein r-m absent (Fig. 2 B). Abdomen. Segment IX annular, with anterior margin smoothly sinuate and concave dorsolaterally in lateral view (Fig. 2 C), this segment longer ventrally than dorsally; with blunt posteromesal projection in dorsal view (Fig. 2 D). Segment X with apex divided dorsomesally along 1 / 3 rd of its total length, broad basally and apically, with Vshaped lateral constrictions at midlength and with eight apical setae in dorsal view (Fig. 2 D); in lateral view, broad basally, with apex pointed and directed dorsad (Fig. 2 C). Superior appendages quadrate, their basolateral margins acute in lateral and dorsal views (Fig. 2 C, 2 D), apically truncate in lateral view (Fig. 2 C) or rounded in dorsal view (Fig. 2 D). Inferior appendages each 2 -segmented, robust, bent dorsad with constriction near base and with incision in its distal half, forming two lobes; apicoventral lobe slender and shorter than dorsal lobe; dorsal lobe digitate with row of setae on dorsal margin and apex curved dorsad in lateral view (Fig. 2 C); harpago with broad base, tapering apically to strongly curved apex hooked mesad in ventral view (Fig. 2 G). Phallobase well developed and sclerotized with dorsal spine curved dorsad in basal region in lateral view (Fig. 2 E); phallicata membranous dorsally in lateral view (Fig. 2 E); pair of long parameres present dorsolaterally in lateral view (Fig. 2 E); in ventral view, two pairs of symmetrical parameres (Fig 2 F); phallotremal sclerite triangular in lateral view (Fig. 2 E), in ventral view U-shaped (Fig 2 F). Female (Fig. 3). Length of each forewing 4.7–5.5 mm (n= 8). Length of each hind wing 3.8–4.5 mm (n= 8). Thorax. Similar to male except each forewing with veins R 2 + 3 and R 3 + 4 not thickened, discoidal cell large and broad, crossvein m-cu absent, forks I, III and V present, fork I sessil, fork V much shallower than that of male (Fig. 3 A); Hind wings each with veins Sc and R forming thickened cell at base, crossvein r-m present (Fig. 3 B). Abdomen. Pair of low sclerotic bulges IXa longitudinally short in lateral view (Fig. 3 C), with pair of invaginations distally separating them from lateral bases of setose bulges IXb in dorsal view (Fig. 3 D); bulges IXb transverse, rounded apicodorsally with row of apicodorsal setae in lateral and dorsal views (Figs. 3 C, 3 D). Bulges IXc produced in triangular lamellae, in lateral view (Fig. 3 C) broad basally and pointed apically, their apices exceeding paired apices of external parts of gonopods VIII and IX (e.gon.VIII+IX) in length (Figs. 3 C, 3 D, 3 E). In ventral view (Fig. 3 E), these latter sclerites e.gon.VIII+IX collectively broad basally, tapering distally, apically terminating in pair of pointed, digitate processes near middle (Figs. 3 D, 3 E). Spermatheca sclerite complex, cylindrical, rounded, and with blunt process anteriorly in dorsal and ventral views (Figs. 3 D, 3 E). Immatures. Unknown. Holotype male. BRAZIL: Bahia: Camacan, Reserva Particular do Patrimônio Natural Serra Bonita, stream after the dam supply, 15 ° 23 ’ 26.6 ”S, 039° 33 ’ 57.2 ”W, el. 828 m, 26.xi. 2011, UV Light Pan trap, F.B. Quinteiro, E.S. Dias & T. Duarte (alcohol; MZUSP). Paratypes. same data as holotype, except 10 males, 3 females (alcohol; MZUSP); same data, except 6 males, 3 females (alcohol; UMSP); same data, except 14.ii. 2014, A.R. Calor &V. Gomes, 8 males; same data, except 15.ii.2013, 19 males, 4 females; same data, except 15 ° 23 ’ 28 ”S, 039° 33 ’ 66 ”W, el. 820 m, 31.vii. 2008, UV Light Pan trap, A.R. Calor, L.S. Lecci, L.C. Pinho & R.A. Moretto, 2 males, 1 female (alcohol; UFBA); same data, except 15 ° 23 ’ 28 ”S, 039° 33 ’ 57 ”W, el. 833 m, 04.xi. 2009, A.R. Calor, F.B. Quinteiro & D. França, 1 male (alcohol; UFBA); same data, except 15 ° 23 ’ 26 ”S, 039° 33 ’ 58 ”W, el. 822 m, iv. 2009, Malaise trap 2, A.R. Calor, L.S. Lecci, L.C. Pinho & R.A. Moretto, 2 males (pinned, UFBA); same data, except Fazenda Valdemar da Farmácia, 15 ° 25 ’ 18.6 ”S, 039° 33 ’ 59.3 ”W, el. 309 m, 28.iii. 2011, UV Light Pan trap, A.R. Calor, F.B. Quinteiro, D. França & H. Barreto, 1 male (alcohol; UFBA); same data, except 15 ° 23 ’ 31.1 ”S, 039° 33 ’ 52.2 ”W, el. 798 m, 29.iii. 2011, UV Light Pan trap, F.B. Quinteiro, D. França & H. Barreto, 2 males (alcohol; UFBA); same data, except 15 ° 23 ’ 15.7 ”S, 039° 33 ’ 57.3 ”W, el. 821 m, 25.xi. 2011, UV Light Pan trap, F.B. Quinteiro, R. Mariano, E.S. Dias, T. Duarte & V. Silva, 2 males, 2 females (alcohol; UFBA); same data, except 15 ° 23 ’ 36.1 ”S, 039° 33 ’ 52.7 ”W, el. 774 m, 25.xi. 2011, UV Light Pan trap, F.B. Quinteiro, R. Mariano, E.S. Dias, T. Duarte & V. Silva, 1 male (alcohol; UFBA); same data, except 15 ° 23 ’09.1”S, 039° 34 ’03.1”W, el. 816 m, 27.xi. 2011, UV Light Pan trap, F.B. Quinteiro, E.S. Dias & T. Duarte, 1 male, 3 females (alcohol; UFBA); same data, except 15 ° 23 ’ 17.6 ”S, 039° 33 ’ 56.3 ”W, 27.xi. 2011, UV Light Pan trap, F.B. Quinteiro, E.S. Dias & T. Duarte, 1 female (alcohol; UFBA). Distribution. Brazil (BA). Etymology. The specific name is in honor of Dr. Ralph W. Holzenthal, the author of the genus Neoathripsodes, who has been instrumental in contributing to our knowledge of Neotropical caddisflies. Taxonomic remarks. The new species presents many morphological differences from its congener. The males of Neoathripsodes holzenthali n. sp. have forewings each with its discoidal cell more elongated longitudinally, placed in the middle of the wing. The male R 1 vein is thickened, especially distal to the discoidal cell, differently from N. anomalus. Additionally, male fork V is much deeper than that of N. anomalus (originating nearly at the fork of Cu 1 and M) and crossvein r-m is absent in the male hind wings of the new species. The presence of a r-m crossvein in each hind wing was thought to be a diagnostic character in the genus (Holzenthal 1989). However, N. holzenthali n. sp. contradicts this assertion, since r-m is not present in the hind wings of the male of the new species, although it is present in the female. While the male genitalia of N. holzenthali n. sp. have the dorsal posteromesal margin of segment IX broad and quadrate, in dorsal view, N. anomalus has the same structure narrow and acuminate. Segment X of the new species is wide in its apex and base, but constricted at midlength in dorsal view, while in N. anomalus it is large, from the base to the middle portion, without constriction, and the apex is narrower than in the new species, in dorsal view. The superior appendages of N. holzenthali n. sp. are apically rounded (dorsal view) or truncate (lateral view) and truncate at the anterior basolateral margins in dorsal and lateral views. In Neoathripsodes anomalus this appendage is ovoid in dorsal and lateral views, with smooth edges. The inferior appendages of the new species are more robust, each having a row of setae on the anterodorsal margin, and the distal half of each inferior appendage is curved dorsad, while the anterior margin of each inferior appendage in N. anomalus does not have a row of setae and is straight. Differing from the generic diagnosis, the female forewings do not have veins R 2 + 3 and R 4 + 5 thickened at the discoidal cell and fork III is present (vein M 1 + 2 branched into M 1 and M 2). Intraspecific variation can be seen in males in the direction of the dorsal spine on the phallobase (upcurved in lateral view), the shape of the anterobasal border of the phallobase (enlarged, lateral view), and the shape of the apex of the slightly rounded dorsal margin of segment IX (in lateral view).Published as part of Dias, Everton S., Quinteiro, Fabio B. & Calor, Adolfo R., 2015, A new species of Neoathripsodes Holzenthal, 1989 (Trichoptera: Leptoceridae) with new generic and species records in Bahia State, Brazil, pp. 370-380 in Zootaxa 4032 (4) on pages 372-375, DOI: 10.11646/zootaxa.4032.4.2, http://zenodo.org/record/23732
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
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