A Role-Based Taxonomy of Human Resource Organizations

[Excerpt] An empirically-derived classification (taxonomy) of human resource departments , based on a few fundamental roles played in organizations, was developed as an alternative to the mostly speculative existing typologies. Four types emerged: the strategic partner, the strategic advisor, the operational partner, and the operational administrator. The stability of the solution and the relationships with variables not used to generate it were found satisfactory. The types show some similarities with those identified in the literature

Le thon : enjeux et stratégies pour l'océan Indien

Les indices de prise par unité d'effort (PUE) sont souvent utilisés pour étalonner les analyses de population séquentielles. Ces indices ne sont pas applicables dans tous les contextes et l'utilisation d'un indice inapproprié peut suggérer des tendances erronées. Il est donc nécessaire d'identifier une unité de mesure de PUE appropriée et d'effectuer des campagnes de sondage afin de compenser le manque de couverture obtenue par les carnets de bord, les déficiences des séries temporelles et l'incertitude associée aux éléments clés de la dynamique d'une pêcherie. (Résumé d'auteur

Review of \u3ci\u3eOn the Edge of Purgatory: An Archaeology of Place in Hispanic Colorado. \u3c/i\u3eBy Bonnie J. Clark

Bonnie Clark\u27s book is a welcome addition to the small body of published literature regarding Great Plains historical archaeology. It concerns two habitation sites located on the Pinon Canyon Maneuver site, a modern military base in the canyon lands of the Purgatory River (which the Spanish named EI Rio de Las Animas Pedidas en Purgatorio) in southeastern Colorado. The river is the lifeblood of this region, with a deep record of occupation by both prehistoric and historic populations. Clark searches for Hispanic Colorado, which she identifies as both a people and a place. But unlike other historical archaeology studies, this one has few written records to rely upon for building a story of the peoples of the past. The goal of Clark\u27s work is to place these two sites into a broader social fabric of Hispanic place

Review of \u3ci\u3eOn the Edge of Purgatory: An Archaeology of Place in Hispanic Colorado. \u3c/i\u3eBy Bonnie J. Clark

Bonnie Clark\u27s book is a welcome addition to the small body of published literature regarding Great Plains historical archaeology. It concerns two habitation sites located on the Pinon Canyon Maneuver site, a modern military base in the canyon lands of the Purgatory River (which the Spanish named EI Rio de Las Animas Pedidas en Purgatorio) in southeastern Colorado. The river is the lifeblood of this region, with a deep record of occupation by both prehistoric and historic populations. Clark searches for Hispanic Colorado, which she identifies as both a people and a place. But unlike other historical archaeology studies, this one has few written records to rely upon for building a story of the peoples of the past. The goal of Clark\u27s work is to place these two sites into a broader social fabric of Hispanic place

Structured waves near the plasma frequency observed in three auroral rocket flights

We present observations of waves at and just above the plasma frequency (<i>f<sub>pe</sub></i>) from three high frequency electric field experiments on three recent rockets launched to altitudes of 300–900 km in active aurora. The predominant observed HF waves just above <i>f<sub>pe</sub></i> are narrowband, short-lived emissions with amplitudes ranging from <1 mV/m to 20 mV/m, often associated with structured electron density. The nature of these HF waves, as determined from frequency-time spectrograms, is highly variable: in some cases, the frequency decreases monotonically with time as in the "HF-chirps" previously reported (McAdams and LaBelle, 1999), but in other cases rising frequencies are observed, or features which alternately rise and fall in frequency. They exhibit two timescales of amplitude variation: a short timescale, typically 50–100 ms, associated with individual discrete features, and a longer timescale associated with the general decrease in the amplitudes of the emissions as the rocket moves away from where the condition <i>f</i>~<i>f<sub>pe</sub></i> holds. The latter timescale ranges from 0.6 to 6.0 s, corresponding to distances of 2–7 km, assuming the phenomenon to be stationary and using the rocket velocity to convert time to distance

Platelet-derived transforming growth factor-β1 promotes keratinocyte proliferation in cutaneous wound healing.

Platelets are a recognised potent source of transforming growth factor-β1 (TGFβ1), a cytokine known to promote wound healing and regeneration by stimulating dermal fibroblast proliferation and extracellular matrix deposition. Platelet lysate has been advocated as a novel personalised therapeutic to treat persistent wounds, although the precise platelet-derived growth factors responsible for these beneficial effects have not been fully elucidated. The aim of this study was to investigate the specific role of platelet-derived TGFβ1 in cutaneous wound healing. Using a transgenic mouse with a targeted deletion of TGFβ1 in megakaryocytes and platelets (TGFβ1fl/fl .PF4-Cre), we show for the first time that platelet-derived TGFβ1 contributes to epidermal and dermal thickening and cellular turnover after excisional skin wounding. In vitro studies demonstrate that human dermal fibroblasts stimulated with platelet lysate containing high levels of platelet-derived TGFβ1 did not exhibit enhanced collagen deposition or proliferation, suggesting that platelet-derived TGFβ1 is not a key promoter of these wound healing processes. Interestingly, human keratinocytes displayed enhanced TGFβ1-driven proliferation in response to platelet lysate, reminiscent of our in vivo findings. In summary, our novel findings define and emphasise an important role of platelet-derived TGFβ1 in epidermal remodelling and regeneration processes during cutaneous wound healing

Multipole-expanded soft-collinear effective theory with non-abelian gauge symmetry

In position space the interaction terms of soft-collinear effective theory must be multipole-expanded to obtain interaction terms with homogeneous scaling behaviour. In this note we provide a manifestly gauge-invariant formulation of the theory after this expansion in the presence of non-abelian gauge fields, extending our previous result. We give the effective Lagrangian (including the Yang-Mills Lagrangian for collinear and ultrasoft gluons) and heavy-to-light transition currents to second order in the power expansion, paying particular attention to the field redefinitions that lead to the gauge symmetries of the effective Lagrangian.Comment: 11 pages, LaTe

Statistics of Auroral Langmuir Waves

The Physics of Auroral Zone Electrons II (PHAZE II) sounding rocket was launched in February 1997 into active pre-midnight aurora. The resulting high frequency wave data are dominated by Langmuir waves. Consistent with many previous observations the Langmuir waves are sporadic, occurring in bursts lasting up to a few hundred ms. We compute statistics of the electric field amplitudes of these Langmuir waves, with two results. First, the shape of the distribution of running averages of the electric field amplitudes remains approximately stationary for a large range of widths of running average less than ~0.3 ms and for a large range of widths exceeding about 1 ms. The interpretation of this transition timescale is unclear but appears unlikely to be of instrumental origin. Second, for 2.6-ms running averages, corresponding to the latter range, the distribution of the logarithm of electric field amplitudes matches a Gaussian form very well for all nine cases studied in detail, hence the statistics are lognormal. These distributions are consistent with stochastic growth theory (SGT)