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It is like a snapshot of the disease in time. It can be used for statistics on the occurrence of chronic diseases. This is in contrast to period prevalence which is a measure of the proportion of people in a population who have a disease or condition over a specific period of time, say a season, or a year.
1998: "Snapshots: The Photography of Everyday Life" at the San Francisco Museum of Modern Art [34] 2000: "Other Pictures: Vernacular Photographs from the Thomas Walther Collection" at the Metropolitan Museum of Art [35] 2007: "The Art of the American Snapshot, 1888–1978: From the Collection of Robert E. Jackson" at the National Gallery of Art ...
Common snapshot subjects include the events of everyday life, often portraying family members, friends, pets, children playing, birthday parties and other celebrations, sunsets, tourist attractions and the like. Snapshots can be technically "imperfect" or amateurish: poorly framed or composed, out of focus, and/or inappropriately lighted by ...
Eidetic memory (/ aɪ ˈ d ɛ t ɪ k / eye-DET-ik), also known as photographic memory and total recall, is the ability to recall an image from memory with high precision—at least for a brief period of time—after seeing it only once [1] and without using a mnemonic device.
If the poverty rate is 10% at a point in time, this may mean that 10% of the population are always poor or that the whole population experiences poverty for 10% of the time. Longitudinal studies can be retrospective (looking back in time, thus using existing data such as medical records or claims database) or prospective (requiring the ...
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Most snapshot implementations are efficient and can create snapshots in O(1). In other words, the time and I/O needed to create the snapshot does not increase with the size of the data set; by contrast, the time and I/O required for a direct backup is proportional to the size of the data set.
Some archaeological corpora can be of such short duration that they provide a snapshot in time. One of the shortest corpora in time may be the 15–30 year Amarna letters texts ( 1350 BC ). The corpus of an ancient city, (for example the " Kültepe Texts" of Turkey), may go through a series of corpora, determined by their find site dates.