102,917 research outputs found
Impact of Services Trade Liberalization on Employment and People Movement in South Asia
No full textServices have been a key driver of overall economic growth in South Asia since the 1990s. This paper examines how the growth of services output, trade and investment have affected service sector employment in South Asia and the extent to which countries in this region are pro-actively undertaking skill development, training, and human resource management policies that are targeted at the service sector.services; service sector employment; service sector; south asia
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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3346: Samuel G. Freedman, author, 2013
No full textPhotograph of author Samuel G. Freedman, at NT Daily Slash meeting in the Mayborn School of Journalism at UNT
Optical investigations of chemically pressurized<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">EuFe</mml:mi><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">As</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant="normal">P</mml:mi><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>)<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>: An<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:math>-wave superconductor with strong interband interactions
No full textSuperconducting EuFe2(As0.82P0.18)(2) single crystals are investigated by broad-band infrared spectroscopy. Below T-c = 28 K, a superconducting gap forms at 2 Delta(0) = 9.5 meV = 3.7k(B)T(c), causing the reflectivity to sharply rise to unity at low frequency. In the range of the gap, the optical conductivity can be perfectly described by BCS theory with an s-wave gap and no nodes. From our analysis of the temperature-dependent conductivity and spectral weight at T > T-c, we deduce an increased interband coupling between hole and electron sheets on the Fermi surface when T approaches T-c.Alexander von Humboldt Foundation; DFG [SPP1458
The Right to Strike under the United States Constitution: Theory, Practice, and Possible Implications for Canada
No full textAnswering critics of the Canadian Supreme Court's judgment in B.C. Health, the author argues that the Court laid the foundation for a principled and durable doctrine protecting constitutional labour rights, one that goes directly to the heart of the matter — the inequality of workers’ power in the employment relation. In the author’s view, two paths could lead from B.C. Health to the recognition of Charter protec- tion for a right to strike: one that treats the right as an accessory to col- lective bargaining, and one that upholds the right directly on the basis of the Charter values of equality and participation. The author supports the latter approach, contending that constitutional rights should be defined in relation to fundamental values, in a way that is not contingent on time-bound or fact-sensitive assessments about the role of strikes within a particular collective bargaining regime. Although a Charter right to strike may involve the courts in difficult choices about when to defer to legislative policy decisions, and courts may lack the institutional capac- ity to deal effectively with labour law issues, the author points out that judges can look to ILO standards for expert guidance. Noting that the U.S. experience in this area might be of considerable use to Canadians, the author concludes by providing an overview of American case law concerning a constitutional right to strike.Peer reviewe
An aryne route to aporphine alkaloids and related topics / |nIjaz Ahmad Chanda. -- 260 St. Catharines, Ont. : [s. n.],
No full textThis research was directed towards the investigation
and development of an aryne route to the syntheses of
aporphi ne and dibenzopyrrocolinium (dibenzoindolizinium)
alkaloids and to the stability of the latter under the
conditions used for aryne formation. The work c an be
divided into three main sections .
i) - Synthesis of Glaucine
6-Bromo-3,4-dimethoxyphenylacetic acid, prepared by
the action of bromine i n acetic acid on3,4-dimethoxyphenylacetic
a cid, was converted into its acid chloride by t he
action of thionyl chloride. This on treatment with 3,4-
dimethoxyphenylethylamine pr ovided N-(3, 4-dimethoxyphenylethyl)-
2-(2-bromo-4,S-dimethoxyphenyl)-acetamide which on
dehydration with phosphoryl chloride (Bischler Napieralski
reaction) in dry benzene afforded l -(2-bromo-4,S-dimethoxybenzyl)-
3,4-dihydro-6,7-dimethoxyisoquinoline, isolated as
hydrochl oride. A new method o f destroying the excess of
phosphoryl chloride was developed which proved to be quite
useful. Methylation of the dihydroisoquinoline'with methyl
iodide in methanol , and subsequent reduction with sodium
borohydride provided (±)-6-bromolaudanosine. Act ion of
potassamide or sodamide in anhydrous liquid ammonia on
(±)-6-bromolaudanosine yielded the corresponding amino
derivative along with other products. Diazotization and
ring closure of (±)-6-aminolaudanosine then a f forded (±)-glaucine which was isolated as methiodide.
ii) - Intramolecular Capture of Aryne During Glaucine
Synthesis, and Subsequent Reactions .
This section deals with the by-products formed under
the conditions of the aryne stage of t he glaucine synthesis.
The crude product, obtained in the reaction of potassamide
or sodamide in liquid ammonia on (±)-6-bromolaudanosine, was
s eparated by chromatography, Three products were separated
and identified.
a ) - 5,6-Dimethoxy-2-( 3,4-dimethoxy-6-ethylphenyl)-lmethylindole.
Two mechanisms are proposed for the formation
of this interesting product. This compound also was prepared
by the action of potassamide in l,iquid ammonia on 5,6 ,l2,l2atetrahydro-
2,3,9,lO-tetramethoxy-7-methyldibenz[b,g]indolizinium
i odide .
b) - 5,6-Dimethoxy-2-(3,4-dimethoxy-6-vinylphenyl)-lmethylindoline.
Its formation represented a new method
of Hofmann degradation . Further confirmation of structure
was done by performing the normal Hofmann reaction on
5, 6,12,12a-tetrahydro -2/3,9,lO-tetramethoxy ~7-methyldibe nz[
b,g]indolizinium iodide. The indoline prepared i n this way
was identical in all respects with that prepared above .
c) - 1- (2-amino-4,5-dimethoxybenzyl ) -l,2,3,4-tetrahydro-2-
methyl-6,7-dimethoxyisoquinoline, was converted t o glaucine
as stated in section 1 .
iii) - Attempt:,ed Sxnthesis of Liriodenine
Piperonal was converted into 3,4-methylenedioxyinitrostyrene which on reduction with lithium aluminium hydride
provided 3,4-methylenedioxyphenylethylamine. The method of
extraction after the reduction was improved t o some extent.
The amine on condensation with m-chlorophenylacetyl chloride,
prepared by the action of oxalyl chloride on 3,4-methylenedioxyphenylacetic
acid, provided N-[ ~ -(3,4-methylenedioxyphenyl)-
e thyl)-3-chlorophenylacetamide. This on dehydration
with phosphoryl chloride in dry benzene followed by air
oxidation afforded l-(3-chlorobenzoyl)-6,7-methylenedioxyi
soquinoline. This compound on r eaction with potassamide
in liquid ammonia afforded a crude product from which. one
product was separated by chromatography i n a pure condition .
This yellow compound analysed as,c17Hl ON2021 and was t he
main product i n the reaction ; a t entative structure is
proposed.
A second compound, not obtained in pure condition,
was submitted to Pschorr reaction in the hope of obtaining
liriodenine, but without success
Effects of Rotation and Curvature Ratio on Fluid Flow and Energy Distribution through a Rotating Curved Rectangular Channel
No full textAbstract: A spectral-based computational algorithm is presented, showing the effects of rotation and curvature on a fluid flow with natural and forced convective heat transfer (CHT) in a rotating curved rectangular channel with an aspect ratio of 3 and curvature ratio ranging from 0.001 to 0.5. The bottom wall of the channel is heated, with cooling from the ceiling; the vertical walls are thermally insulated. The system is rotated about the vertical axis in the positive and negative directions with the Taylor number 2500due to a constant pressure gradient force applied in the stream-wise direction. With the numerical computation presented, five branches of asymmetric steady solution curves comprising single-pair to 11-pair vortices are found. The change in the flow state is then evaluated by means of time-evolution computation, and sketching of the phase space of the solutions enables good prediction of the flow transition. It is found that in the case of co-rotation, a chaotic flow turns into a steady-state flow via a periodic or multi-periodic flow. In the counter-rotation case, however, irregular oscillations change directly to a multi-periodic flow. The study shows appearance of maximum 6-pair vortices at a small curvature, 11-pair vortices at a moderate curvature, and maximum 2-pair vortices at strong curvature. It is also observed that the number of secondary vortices reduces as Tr increases. The vortex structure of secondary flows is also shown in bar diagrams for easy visualization of the effect of curvature on the flow evolution. The study shows that the CHT is significantly enhanced by the secondary flow and a chaotic flow boosts the heat transfer more effectively than other physically realizable solutions. Finally, a comparison between the simulated and experimental results is performed and reasonable matching between the two solutions is observed
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