Simulation Training in U.K. General Aviation: An Undervalued Aid to Reducing Loss of Control Accidents

Analysis of data from 1,007 U.K. general aviation (GA) accidents demonstrates the predominant cause of accidents is loss of control, exacerbated by a lack of recent flying experience. These are long-standing problems that can be targeted effectively with simulation training. Discussion on training strategies in commercial aviation reinforces the logic of introducing simulation training for the GA pilot. Conclusions drawn affirm the notion that GA safety would benefit from implementation of regulated simulation training

Diferents maneres de descriure el món : una activitat introductòria de ciències a l’aula

En aquest treball s’estudia l’habilitat cognitivolingüística dels alumnes de 4t d’ESO davant del repte de descriure un objecte des del punt de vista de diferents disciplines científiques. Es tracta d’una activitat d’aula realitzada durant tres cursos lectius per introduir l’assignatura de física i química, i modificada en el seu disseny per les docents en base als resultats observats. Es proposa als alumnes mirar una mateixa imatge des de diverses perspectives que corresponen a les diferents àrees de ciències. S’analitzen les descripcions tant des del punt de vista lingüístic com dels continguts de la disciplina, i s’identifiquen les dificultats de l’alumnat en seleccionar els aspectes rellevants, organitzar-los i caracteritzar-los adequadament

Earth embankment erosion control study

CER63SSK26.May 1963.A study conducted in cooperation with the United States Department of Agriculture, Agricultural Research Service, Soil and Water Conservation Research Division, Fort Collins, Colorado for United States Navy, District Public Works Office, Ninth Naval District.Includes bibliographical references

Comparative Assessment of Soil-Structure Interaction Regulations of ASCE 7-16 and ASCE 7-10

This paper evaluates the consequences of practicing soil structure interaction (SSI) regulations of ASCE 7-16 on seismic performance of building structures. The motivation for this research stems from the significant changes in the new SSI provisions of ASCE 7-16 compared to the previous 2010 edition. Generally, ASCE 7 considers SSI as a beneficial effect, and allows designer to reduce the design base shear. However, literature shows that this idea cannot properly capture the SSI effects on nonlinear systems. ASCE 7-16 is the first edition of ASCE 7 that considers the SSI effect on yielding systems. This study investigates the consequences of practicing the new provisions on a wide range of buildings with different dynamic characteristics on different soil types. Ductility demand of the structure forms the performance metric of this study, and the probability that practicing SSI provisions, in lieu of fixed-base provisions, increases the ductility demand of the structure is computed. The analyses are conducted within a probabilistic framework which considers the uncertainties in the ground motion and in the properties of the soil-structure system. It is concluded that, for structures with surface foundation on moderate to soft soils, SSI regulations of both ASCE 7-10 and ASCE 7-16 are fairly likely to result in a similar and larger structural responses than those obtained by practicing the fixed-base design regulations. However, for squat and ordinary stiff structures on soft soil or structures with embedded foundation on moderate to soft soils, the SSI provisions of ASCE 7-16 result in performance levels that are closer to those obtained by practicing the fixed-base regulations. Finally, for structures on very soft soils, the new SSI provisions of ASCE 7-16 are likely to rather conservative designs.Comment: ASCE Structures Congress, Fort Worth, TX, USA, April 19-21 (2018

Burnout in the ICU : potential consequences for staff and patient well-being

Peer reviewedAuthor versio