828 research outputs found

    An Insider's Perspective: Training And Power In An Industrial Setting

    Get PDF
    This paper discusses the perspectives of one training professional in a corporate industrial setting employing union workers. The struggle for power is the hidden agenda (Cunningham, 1998; Garrick & Rhodes, 2000; Newman, 1990) as management uses seemingly innocuous training programs for control. Examples are discussed and analyzed

    Caught in the StormPower and Control in a Union/Management Training Program

    Get PDF
    This study investigated how a workplace educator was used as a pawn between the company and the union while delivering a safety-training program. Among the findings were training was held in contempt by union and management while safety’s exchange value was exploited

    The hepatic proteome of gilthead seabream (Sparus Aurata) acclimated to two salinity conditions

    Get PDF
    Comunicaciones a congreso

    Negative oxygen vacancies in HfO2_2 as charge traps in high-k stacks

    Full text link
    We calculated the optical excitation and thermal ionization energies of oxygen vacancies in m-HfO2_2 using atomic basis sets, a non-local density functional and periodic supercell. The thermal ionization energies of negatively charged V−^- and V2−^{2-} centres are consistent with values obtained by the electrical measurements. The results suggest that negative oxygen vacancies are the likely candidates for intrinsic electron traps in the hafnum-based gate stack devices.Comment: 3 pages, 2 figure

    Properties of a radiation-induced charge multiplication region in epitaxial silicon diodes

    Full text link
    Charge multiplication (CM) in p+^+n epitaxial silicon pad diodes of 75, 100 and 150 \upmum thickness at high voltages after proton irradiation with 1 MeV neutron equivalent fluences in the order of 101610^{16} cm−2^{-2} was studied as an option to overcome the strong trapping of charge carriers in the innermost tracking region of future Super-LHC detectors. Charge collection efficiency (CCE) measurements using the Transient Current Technique (TCT) with radiation of different penetration (670, 830, 1060 nm laser light and α\alpha-particles with optional absorbers) were used to locate the CM region close to the p+^+-implantation. The dependence of CM on material, thickness of the epitaxial layer, annealing and temperature was studied. The collected charge in the CM regime was found to be proportional to the deposited charge, uniform over the diode area and stable over a period of several days. Randomly occurring micro discharges at high voltages turned out to be the largest challenge for operation of the diodes in the CM regime. Although at high voltages an increase of the TCT baseline noise was observed, the signal-to-noise ratio was found to improve due to CM for laser light. Possible effects on the charge spectra measured with laser light due to statistical fluctuations in the CM process were not observed. In contrast, the relative width of the spectra increased in the case of α\alpha-particles, probably due to varying charge deposited in the CM region.Comment: 11 pages, accepted by NIM

    Timing and Petrogenesis of the Permo-Carboniferous Larvik Plutonic Complex, Oslo Rift, Norway : New Insights from U-Pb, Lu-Hf, and O Isotopes in Zircon

    Get PDF
    The Permo-Carboniferous Oslo Rift is a narrow, aborted continental rift with comparatively little extension but voluminous magmatism, developed at a Proterozoic lithospheric discontinuity. On the southern flank of the onshore part of the rift, the multiple intrusive phase Larvik plutonic complex (LPC) encompasses almost the width of the rift with a conspicuous over- to undersaturated assemblage of monzonite (larvikite, tonsbergite) and nepheline syenite (lardalite, foyaite). We present new single-crystal U-Pb-, Lu-Hf-, and O-in-zircon isotope data for the intrusive centers of the complex. U-Pb ages of slightly over- to undersaturated monzonites show a shift in igneous activity from 299 Ma on the eastern edge of the complex to 289 Ma in the west. The western part of the complex is built of two consanguineous magmatic systems with a northward shift in the locus of magmatism, from 296 to 289 Ma (undersaturated monzonite) and 296 to similar to 288 Ma (nepheline syenite). Moreover, an early oversaturated monzonite was emplaced in the eastern part of the complex at similar to 302 Ma. The Hf and O isotope composition of the monzonites and nepheline syenites shows little variation with zircon epsilon(Hf) (295 Ma) values of +5.5 to +8 and delta(18)Omicron values of +4.79 parts per thousand to +5.49 parts per thousand. No change in isotope values is observed with varying alkalinity and the Hf and O isotope compositions are interpreted as mantle source values. The source of the precursors of the monzonitic and nepheline syenitic magmas was probably a mildly depleted, sublithospheric peridotite in the lithosphere-asthenosphere boundary zone (at 3-4 GPa). Rhyolite-MELTS modeling implies polybaric fractionation of weakly alkaline basaltic melts from the source having led to an oversaturated/saturated liquid line of descent at similar to 0.5 GPa and an undersaturated one at similar to 1 GPa. Magmatism had an imperative role in the evolution of the rift by localizing strain and weakening the lithosphere along the discontinuity. A fractionating crustal melt column was tapped at varying depths in the course of advancing rupturing with no significant mixing of the over- and undersaturated melts, and magma batches were emplaced as sequential nested plutons in response to differential opening of the rift. Among continental saturated-undersaturated alkaline complexes, the LPC may be unique in the emplacement of successive magma batches across a continental rift in the direction of opening, tapping of increasingly deeper parts of the melt column with advancing rifting, and intrusion of two contemporaneous, contrasting magmatic lineages at the end of igneous activity. The marked lithospheric step at the rift locus in the Precambrian basement of southeastern Norway was probably the driving force for the inception and evolution of the Larvik magmatic system.Peer reviewe

    B3LYP calculations of cerium oxides RID C-3994-2009

    Get PDF
    In this paper we evaluate the performance of density functional theory with the B3LYP functional for calculations on ceria (CeO2) and cerium sesquioxide (Ce2O3). We demonstrate that B3LYP is able to describe CeO2 and Ce2O3 reasonably well. When compared to other functionals, B3LYP performs slightly better than the hybrid functional PBE0 for the electronic properties but slightly worse for the structural properties, although neither performs as well as LDA+U(U=6 eV) or PBE+U(U=5 eV).We also make an extensive comparison of atomic basis sets suitable for periodic calculations of these cerium oxides. Here we conclude that there is currently only one type of cerium basis set available in the literature that is able to give a reasonable description of the electronic structure of both CeO2 and Ce2O3. These basis sets are based on a 28 electron effective core potential (ECP) and 30 electrons are attributed to the valence space of cerium. Basis sets based on 46 electron ECPs fail for these materials
    • …
    corecore