112,673 research outputs found
Le "Determinisme linguistique" de Benveniste et le cas du Vaisesika
No full textLyssenko Viktoria. Le "Determinisme linguistique" de Benveniste et le cas du Vaisesika [Электронный ресурс] / V. Lyssenko// Indologica : сб. ст. памяти Т. Я. Елизаренковой / Рос. гос. гуманитарный ун-т. - М. : РГГУ, 2012. - Кн. 2. - С. 381-396
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
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
Dopad Obchodní Války mezi USA a Čínou na Globální Dodavatelské Řetězce. Případová Studie Technologického Odvětví.
No full textThis thesis aims to identify the impact of the U.S.-China trade war on U.S. semiconductors and Information and Communication Technology (ICT) industries, by showing how the conflict has reshaped supply chains, impacted the nature of trade relations, and examined sectoral performance. In this thesis the issues of national security, intellectual property, and technological interdependence are discussed in more detail. Disagreements in these aspects have led to the imposition of protective actions, both in the form of tariffs and non-tariff measures, which in turn have had a mixed impact on the manufacturing sectors of the semiconductor and ICT industries. In order to assess the impact of the trade war on selected U.S. manufacturing sectors, a quantitative analysis using advanced statistical research methods was conducted. The result of the analysis of shifts in supply chains in one of the most globalised industries indicates that the United States and allies dominating semiconductor-equipment supply and China commanding assembly, testing, and packaging, full decoupling proves impractical. Also, the impact of the measures taken on the sectoral performance of U.S. manufacturing is not unambiguous, as for high-tech industries innovation and labour quality are more important determinants of productive capacity. The conflict is driving selective reshoring and higher costs rather than a clean break, leaving both economies strategically rivalrous yet economically intertwined.Cílem této práce je zjistit dopad americko-čínské obchodní války na americký průmysl polovodičů a informační a komunikační technologie (ICT) tím, že ukáže, jak konflikt změnil dodavatelské řetězce, ovlivnil povahu obchodních vztahů a prozkoumal výkonnost odvětví. V této práci jsou podrobněji rozebrány otázky národní bezpečnosti, duševního vlastnictví a technologické vzájemné závislosti. Neshody v těchto aspektech vedly k zavedení ochranných opatření, a to jak v podobě cel, tak i netarifních opatření, která následně měla smíšený dopad na výrobní odvětví polovodičového průmyslu a průmyslu informačních a komunikačních technologií. Za účelem posouzení dopadu obchodní války na vybraná výrobní odvětví USA byla provedena kvantitativní analýza s využitím pokročilých statistických výzkumných metod. Výsledek analýzy posunů v dodavatelských řetězcích v jednom z nejvíce globalizovaných průmyslových odvětví ukazuje, že vzhledem k tomu, že Spojené státy a jejich spojenci dominují dodávkám polovodičového výrobního vybavení a Čína ovládá montáž, testování a balení, úplné oddělení se ukazuje jako nepraktické. Rovněž dopad přijatých opatření na odvětvovou výkonnost amerického zpracovatelského průmyslu není jednoznačný, neboť pro technologicky vyspělá odvětví jsou inovace a kvalita pracovní síly důležitějšími faktory určujícími výrobní kapacitu. Konflikt vede spíše k selektivnímu přesunu výroby a vyšším nákladům než k úplnému přerušení, takže obě ekonomiky jsou strategicky soupeřící, ale hospodářsky provázané
(Mesitylene)ruthenium π-complexes with benzo-15-crown-5 and dibenzo-18-crown-6
No full textThe reactions of benzo-15-crown-5 and dibenzo-18-crown-6 with 1 equiv. of [(mes)Ru(MeNO2)3]2+ (mes = 1,3,5-C6H3Me3) give the mononuclear complexes [(mes)Ru(η6-benzo-15-crown-5)]2+ (1) and [(mes)Ru(η6-dibenzo-18-crown-6)]2+ (2) in 50% yield. Similar reaction with 2 equiv. of [(mes)Ru(MeNO2)3]2+ produces the dinuclear complex [(μ-η6:η6-dibenzo-18-crown-6)Ru2(mes)2]4+ (3) in 96% yield as a 2:3 mixture of cis- and trans-isomers. Structures of 2(OTf)2 and trans-3(OTf)4 were confirmed by X-ray diffraction. The NMR titration showed that mononuclear dications 1 and 2 bind Na+ ion less effective (Ka = 600 and 250 M-1) than free benzo-15-crown-5 and dibenzo-18-crown-6 (Ka = 2 × 105 and 5 × 106 M-1). The dinuclear tetracation 3 does not bind Na+ within measurable limits of NMR titration method. The electrochemical behaviour of complexes 1-3 was studied in propylene carbonate solution. They exhibit a partially chemically reversible Ru(II)/Ru(I) reduction, which in the case of the dinuclear complex 3 proceeds through two slightly separated steps. The redox activity of the complexes is substantially unaffected by the presence of sodium ion. © 2010 Elsevier B.V. All rights reserved
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Slipped μ-indenyl triple-decker complexes containing (C 4Me4)Co and (C5R5)Ru fragments
No full textSlipped triple-decker complexes with a bridging indenyl ligand, namely [Cb*Co(μ:η5:η6-C9H 7)CoCb*]+ (2, Cb* = C4Me 4) and [Cb*Co(μ:η6-C9H 7)Ru(C5R5)]+ (R = H, 5a; Me, 5b), have been synthesised by electrophilic stacking of [Cb* Co(η5-C9H7)] (1) with [Cb*Co(MeCN)3]+ or [(C5R 5)Ru-(MeCN)3]+ (R = H, Me), respectively. A similar reaction of [(C5R5)Ru(η5-C 9H7)] (R = H, 3a; Me, 3b) with [Cb*Co-(MeCN) 3]+ affords the cations [(C5R 5)Ru(μ:η5:η6-C9H 7)-CoCb*]+ (R = H, 4a; Me, 4b), which are isomeric with 5a,b. Stacking of [Ru(η5-C9H7)2] (7) with [Cb*Co(MeCN)3]+ or [Cb*CoI] x/TlBF4 gives the triple-decker complex [(η5-C9H7)-Ru(μ:η5: η6-C9H7)CoCb*]+ (8). Further reaction of 8 with [Cp*RuCl]4/TlBF4 unexpectedly affords the slipped tetradecker ruthenium complex (Cp*Ru(μ:η5:η6-C9H 7)Ru(μ:η5:η6-C9H 7)RuCp*]2+ (11). The structures of [4b][Co(η-7,8-C2B9H11)2] and [Cp*Ru(η6-C9H7)] (6) have been determined by X-ray diffraction, and the electrochemical behaviour of the complexes prepared has been studied. © Wiley-VCH Verlag GmbH & Co. KGaA, 2006
Electrochemical behaviour of cobalta-dicarbollide sandwich complexes with different capping units
No full textThe redox aptitude of a series of cobalt(III) or cobalt(I) sandwich complexes bearing a charge compensated dicarbollide ligand ([9-L-7,8-C 2B9H10]-) as a constant unit and different counterparts (varying from classical [7,8-C2B 9H11]2- to charge-compensated [9-L-7,8-C 2B9H10]- dicarbollides, from cyclopentadienyl [C5R5]- (R = Me, H) to cyclobutadiene [C4Me4]0 ligands) has been studied. All the Co(III) complexes display the reversible sequence Co(III)/Co(II)/Co(I). In contrast, the Co(I) complexes (namely, those capped by tetramethylcyclobutadiene) accede reversibly only to the Co(II) oxidation state, the passage to Co(III) being irreversible. When possible, the Co(II) intermediates have been characterized by EPR spectroscopy. The molecular structures of the monocation [Co(η-9-SMe2-7,8-C2B 9H10)2]+ in its DD/LL and meso diastereomeric forms as well as that of heteroleptic (η-7,8-C 2B9H11)Co(η-9-SMe2-7,8-C 2B9H10) have been obtained by single-crystal diffraction. © Springer-Verlag 2005
Polarization revival of a Bloch oscillating wave packet in conjunction with resonant Zener tunneling
No full textWe investigate the dynamics of a Bloch-oscillating wave packet in the presence of strong coupling to delocalized above barrier states (Zener tunneling), using time-resolved intraband polarization-sensitive measurements. At a threshold electric field, the resonance of localized and delocalized states causes a quantum beating which is observed as a revival in the intraband polarization. Our numerical simulation visualizes the spatial wave packet decomposition and reformation. The wave packet moves on a ps time scale over a distance of more than 100 nm and sequentially undergoes Bloch oscillations in the below- and above-barrier bands
A new approach to the photochemically controlled crown ethers: (Tetramethylcyclobutadiene)cobalt complexes with benzo-15-crown-5 and dibenzo-18-crown-6
No full textThe photochemical substitution of benzene in [Cb*Co(C 6H6)]+ (Cb* = C4Me 4) with benzo-15-crown-5 (1) gives the corresponding π-complex [Cb*Co(η6-C6H4(OCH2CH 2C)CH2CH2)2O)]+ (2). A similar reaction with dibenzo-18-crown-6 (3) produces cation [Cb*Co(η6-C6H4(OCH2CH 2OCH2CH2O)2C6H 4)]+ (4). Arene exchange is reversible, and both 1 and 3 can be regenerated by irradiation of 2 and 4 with excess benzene. The reaction of [Cb*Co(C6H6)]+ with 0.5 equiv of 3 gives dinuclear complex [trans-Cb*Co(μ-η6, η6-C6H4(OCH2CH 2OCH2CH2O)2C6H 4)CoCb*]2+ (5). The structures of cations 4 and 5 were confirmed by X-ray diffraction. The electrochemical behavior of complexes prepared was studied. The sodium-binding ability of cobalt complexes 2,4, and 5 (determined by NMR titration; Ka = 2500, 800, and 50, respectively) was found to be much smaller than that of the free crown ethers 1 and 3 (K a, -200 000 and 5 000 000). DFT calculations suggest that this decrease is mainly due to electrostatic repulsion of Co+ and Na + centers. © 2008 American Chemical Society
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