5,650 research outputs found

    Optimising the value of assets and financial contracts in the energy industries

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    Coping With Stress: Dispositional Coping Strategies of Project Managers

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    This study explores the relationship between project management practices, control appraisals and dispositional coping strategies used by project managers when dealing with stressful situations. Seventy-one project managers from a global sample participated by completing a web-based questionnaire. Results support the hypotheses that project managers apply more Active Coping and Planning strategies when dealing with stressful situations and that the level of maturity of the organisational practices is related to an increased use of Planning coping strategies. Findings and limitations are discussed

    An Application of GIS Techniques to Assess the Risk of Disturbance of Archaeological Sites by Mass Movement and Marine Flooding in Auyuittuq National Park Reserve, Nunavut

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    Coastal regions within Auyuittuq National Park Reserve (ANPR) are sensitive to mass movement processes and threatened by flooding in response to sea level rise. These processes pose a risk to culturally significant archaeological sites within ANPR. Sites at risk of disturbance need to be identified and protected to conserve valuable archaeological resources. Since the costs of identifying and monitoring sites at risk in remote areas are substantial, modern technologies such as Geographic Information Systems (GIS) can be used to create a more rapid and cost-effective means to monitor coastal environments and manage coastal resources. This study examines the application of GIS technology to assess the risk of disturbance of 44 coastal archaeological sites by mass movement and marine flooding within ANPR. Data on surficial materials and slope angles are combined in an overlay analysis to assess terrain sensitivity to mass movement. The output from this analysis is a coarse regional assessment of mass movement potential as it relates to the strength of materials on slopes. The overall risk of disturbance for archaeological sites within ANPR is assessed by combining the risk of mass movement and the risk of marine flooding. Twenty-eight sites within ANPR are identified as being at considerable risk to disturbance: these sites are located largely on glaciomarine sediments at moderate or high slope angles and are at substantial risk to flooding (less than two metres above sea level).Application des techniques SIG dans l’évaluation du risque de perturbation des sites archéologiques par les mouvements de masse et les inondations marines dans la réserve du parc national de Auyuittuq, Nunavut. Les côtes de la réserve du parc national de Auyuittuq sont sensibles aux mouvements de masse et sont affectées par la montée du niveau marin. Ceci constitue un risque pour les sites archéologiques de grande valeur culturelle. De tels sites doivent être identifiés et protégés afin de préserver les ressources archéologiques. Parce que les coûts d’identification et de suivi des sites à risque dans les régions éloignées sont substantiels, les technologies modernes peu coûteuses dont les Systèmes d’Information Géographique (SIG) peuvent être utilisées pour le suivi des environnements côtiers et la gestion des ressources côtières. Cette étude porte sur l’application d’un SIG pour évaluer le risque de perturbation par les mouvements de masse et les inondations de 44 sites archéologiques côtiers dans la réserve du parc national de Auyuittuq. Les données concernant les matériaux de surface et l’angle des pentes sont combinées dans une analyse d’évaluation de la sensibilité du terrain aux mouvements de masse. Le résultat de cette analyse consiste en une estimation régionale d’ensemble du potentiel de mouvement de masse en fonction de la résistance du matériel sur les pentes. Le risque global de perturbation des sites archéologiques de la réserve a été évalué à partir de la combinaison des risques de mouvements de masse et d’inondation marine. Vingt-huit sites présentent un risque considérable de perturbation puisqu’ils occupent des sédiments glaciomarins à pente modérée à élevée, à moins de deux mètres au-dessus du niveau de la mer

    High Resolution Millimeter-Wave Mapping of Linearly Polarized Dust Emission: Magnetic Field Structure in Orion

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    We present 1.3 and 3.3 mm polarization maps of Orion-KL obtained with the BIMA array at approximately 4 arcsec resolution. Thermal emission from magnetically aligned dust grains produces the polarization. Along the Orion ``ridge'' the polarization position angle varies smoothly from about 10 degrees to 40 degrees, in agreement with previous lower resolution maps. In a small region south of the Orion ``hot core,'' however, the position angle changes by 90 degrees. This abrupt change in polarization direction is not necessarily the signpost of a twisted magnetic field. Rather, in this localized region processes other than the usual Davis-Greenstein mechanism might align the dust grains with their long axes parallel with the field, orthogonal to their normal orientation.Comment: AAS preprint:14 pages, 2 figures (3mm.eps and 1mm.eps); requires aaspp4.sty To be published in Astrophysical Journal Letter
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