In this paper we study the following simple and mind-puzzling problem: Can a model train car, which runs along an intricate track complete a full cycle around it? In our paper a track will be represented by a simple closed curve, and the cars of our model train by segments whose end-points lie on the curve.

Two different inverse design approaches are proposed for developing wind turbine blades for sub-scale wake testing. In the first approach, dimensionless circulation is matched for full scale and sub-scale wind turbine blades for equal shed vorticity in the wake. In the second approach, the normalized normal and tangential force distributions are matched for large scale and small scale wind turb...

Launch and recovery helicopter wind envelope for a ship type was determined as the first step to the helicopter qualification program. Flight deck velocities data were obtained by means of a two components laser Doppler anemometer testing a 1/50 model in the wind tunnel stream. Full-scale flight deck measurements were obtained on board the ship using a sonic anemometer. Wind tunnel and full-sca...

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background: full blood count has been shown to predict disease severity and mortality risk in cancer patients. this study aimed to highlight the degree of derangements of full blood count parameters and provide mean values in pre-chemotherapy breast cancer patients compared with apparently normal control subjects.methods: this was an unmatched case-control study among breast cancer patients att...

contents: no 17, 2015   (full text