74 research outputs found
Interpreting Between Greek Sign Language and Spoken Greek at the Aristotle University of Thessaloniki
This paper presents the first project on the formation of Sign Language Interpreters in Greek Universities. At the Aristotle University of Thessaloniki, the training of sign language interpreters is an experimental project organized by the Social Policy Committee and is carried out in collaboration with the School of English Studies and the Postgraduate Program in Translation and Interpretation Studies. This project has been initiated because of the realization that deaf students represent a linguistic minority in our University. In universities, the growing number of deaf students increases the demand for community and conference interpreting between the Greek sign language and the Greek â general or special â spoken language.Notre projet pĂ©dagogique a pour but de renforcer lâappui continuel Ă la professionalisation de la communautĂ© des interprĂštes de langue des signes Ă lâUniversitĂ© Aristote par lâorganisation de cours de durĂ©e limitĂ©e sur lâinterprĂ©tation de la langue des signes. La prĂ©paration des interprĂštes de la langue des signes est un projet expĂ©rimental patronnĂ© par le Social Policy Committee et rĂ©alisĂ© en collaboration avec le DĂ©partement de langue et littĂ©rature anglaises et le programme des Ă©tudes postuniversitaires de traduction et dâinterprĂ©tation. Ce programme expĂ©rimental a Ă©tĂ© crĂ©Ă© pour rĂ©pondre aux besoins des Ă©tudiants sourds de lâuniversitĂ©
Applicability of the Broken-Bond Rule to the Surface Energy of the fcc Metals
We apply the Green's function based full-potential screened
Korringa-Kohn-Rostoker method in conjunction with the local density
approximation to study the surface energies of the noble and the fcc transition
and metals. The orientation dependence of the transition metal surface
energies can be well described taking into account only the broken bonds
between first neighbors, quite analogous to the behavior we recently found for
the noble metals [see cond-mat/0105207]. The (111) and (100) surfaces of the
metals show a jellium like behavior but for the more open surfaces we find
again the noble metals behavior but with larger deviation from the broken-bond
rule compared to the transition metals. Finally we show that the use of the
full potential is crucial to obtain accurate surface energy anisotropy ratios
for the vicinal surfaces.Comment: 13 pages, 5 figures, to appear in July in Surface Science Vol. 511,1
(2002
An Effective-Medium Tight-Binding Model for Silicon
A new method for calculating the total energy of Si systems is presented. The
method is based on the effective-medium theory concept of a reference system.
Instead of calculating the energy of an atom in the system of interest a
reference system is introduced where the local surroundings are similar. The
energy of the reference system can be calculated selfconsistently once and for
all while the energy difference to the reference system can be obtained
approximately. We propose to calculate it using the tight-binding LMTO scheme
with the Atomic-Sphere Approximation(ASA) for the potential, and by using the
ASA with charge-conserving spheres we are able to treat open system without
introducing empty spheres. All steps in the calculational method is {\em ab
initio} in the sense that all quantities entering are calculated from first
principles without any fitting to experiment. A complete and detailed
description of the method is given together with test calculations of the
energies of phonons, elastic constants, different structures, surfaces and
surface reconstructions. We compare the results to calculations using an
empirical tight-binding scheme.Comment: 26 pages (11 uuencoded Postscript figures appended), LaTeX,
CAMP-090594-
Self-diffusion of adatoms, dimers, and vacancies on Cu(100)
We use ab initio static relaxation methods and semi-empirical
molecular-dynamics simulations to investigate the energetics and dynamics of
the diffusion of adatoms, dimers, and vacancies on Cu(100). It is found that
the dynamical energy barriers for diffusion are well approximated by the
static, 0 K barriers and that prefactors do not depend sensitively on the
species undergoing diffusion. The ab initio barriers are observed to be
significantly lower when calculated within the generalized-gradient
approximation (GGA) rather than in the local-density approximation (LDA). Our
calculations predict that surface diffusion should proceed primarily via the
diffusion of vacancies. Adatoms are found to migrate most easily via a jump
mechanism. This is the case, also, of dimers, even though the corresponding
barrier is slightly larger than it is for adatoms. We observe, further, that
dimers diffuse more readily than they can dissociate. Our results are discussed
in the context of recent submonolayer growth experiments of Cu(100).Comment: Submitted to the Physical Review B; 15 pages including postscript
figures; see also http://www.centrcn.umontreal.ca/~lewi
Novel kinetoplastid-specific cAMP binding proteins identified by RNAi screening for cAMP resistance in Trypanosoma brucei
Cyclic AMP signalling in trypanosomes differs from most eukaryotes due to absence of known cAMP effectors and cAMP independence of PKA. We have previously identified four genes from a genome-wide RNAi screen for resistance to the cAMP phosphodiesterase (PDE) inhibitor NPD-001. The genes were named cAMP Response Protein (CARP) 1 through 4. Here, we report an additional six CARP candidate genes from the original sample, after deep sequencing of the RNA interference target pool retrieved after NPD-001 selection (RIT-seq). The resistance phenotypes were confirmed by individual RNAi knockdown. Highest level of resistance to NPD-001, approximately 17-fold, was seen for knockdown of CARP7 (Tb927.7.4510). CARP1 and CARP11 contain predicted cyclic AMP binding domains and bind cAMP as evidenced by capture and competition on immobilised cAMP. CARP orthologues are strongly enriched in kinetoplastid species, and CARP3 and CARP11 are unique to Trypanosoma. Localization data and/or domain architecture of all CARPs predict association with the T. brucei flagellum. This suggests a crucial role of cAMP in flagellar function, in line with the cell division phenotype caused by high cAMP and the known role of the flagellum for cytokinesis. The CARP collection is a resource for discovery of unusual cAMP pathways and flagellar biology
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