Abstract: Several techniques are disclosed to prevent dust and other particles from building up inside housings of electronic devices. These allow timely, easy and safe dust removal from the entire volume of the housing of the device without its disassembly by creating directed airflows inside of the housing. Moreover, dust is carried from the enclosure to a dust trap without allowing escape of dust from the enclosure into the ambient air. Dust removal is carried out by creating one or more directed airflows by air injection, exhausting or both air injection and air exhausting to move the dust from the enclosure to the dust trap. In some cases a sealing member is supplied to close off apertures in the enclosure that are not used in the dust collection process.

Abstract: A data processing method determines an appropriate size of a selected apparel for an individual based on the individual's fit indicators characterizing the fit of apparels to the individual. The fit indicators factor in the individual's body profile and fit preferences. The method employs data on fit indicators associated with other individuals, where these fit indicators are for apparels that are at least of the same type and style as the apparel in question. In addition, at least one fit indicator associated with the other individuals is related to a certain size of the apparel in question.