The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Naval personnel at sea completed daily diaries in which they recorded sleep quality, eating patterns and problems with mental and physical task performance. The ships were fitted with motion sensors to enable root mean square accelerations of the deck to be recorded in three axes. Six-hour RMS accelerations were computed for different parts of the ship using rigid body assumptions. The questionnaire...