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Situational leadership in air traffic control

In high-risk environments such as air traffic control, leadership on different levels plays a certain role in establishing, promoting, and maintaining a good safety culture. The current study aimed to investigate how leadership styles, leadership style adaptability, and over and under task leadership behavior differed across situations, operative conditions, leadership structures, and working task

Ny modell för hantering och analys av klimatrelaterade temperaturlaster på betongkonstruktioner

Temperaturen i ett material styrs av variationer i den omgivande miljön. Solstrålning, vindhastighet, lufttemperatur och långvågig värmestrålning bidrar tillsammas till att temperaturen i konstruktioner ändras i både tid och rum. Temperaturfördelningen i en konstruktion kan delas upp i komponenter; medeltemperatur, linjär temperaturdifferens horisontellt och vertikalt, samt en ickelinjär komponent

Robustly-optimal rate one-half binary convolutional codes

Three optimality criteria for convolutional codes are considered in this correspondence: namely, free distance, minimum distance, and distance profile. Here we report the results of computer searches for rate one-half binary convolutional codes that are "robustly optimal" in the sense of being optimal for one criterion and optimal or near-optimal for the other two criteria. Comparisons with previo

The effect of urban geometry on mean radiant temperature under future climate change: a study of three European cities

Future anthropogenic climate change is likely to increase the air temperature (T a ) across Europe and increase the frequency, duration and magnitude of severe heat stress events. Heat stress events are generally associated with clear-sky conditions and high T a , which give rise to high radiant heat load, i.e. mean radiant temperature (T mrt ). In urban environments, T mrt is strongly influenced