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Activity theory (AT; Russian: Теория деятельности) [1] is an umbrella term for a line of eclectic social-sciences theories and research with its roots in the Soviet psychological activity theory pioneered by Sergei Rubinstein in the 1930s. It was later advocated for and popularized by Alexei Leont'ev.
Was one of the big three spreadsheets (the others being Lotus 123 and Excel). EasyOffice EasySpreadsheet – for MS Windows. No longer freeware, this suite aims to be more user friendly than competitors. Framework – for MS Windows. Historical office suite still available and supported. It includes a spreadsheet.
Example of a spreadsheet holding data about a group of audio tracks. A spreadsheet is a computer application for computation, organization, analysis and storage of data in tabular form. [1] [2] [3] Spreadsheets were developed as computerized analogs of paper accounting worksheets. [4] The program operates on data entered in cells of a table.
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Cultural-historical activity theory (CHAT) is a theoretical framework [1] to conceptualize and analyse the relationship between cognition (what people think and feel) and activity (what people do). [ 2 ] [ 3 ] [ 4 ] The theory was founded by L. S. Vygotsky [ 5 ] and Aleksei N. Leontiev , who were part of the cultural-historical school of ...
For Leontiev, the psychological [3] of 'activity' consisted of those processes "that realize a person's actual life in the objective world by which he is surrounded, his social being in all the richness and variety of its forms" (Leontiev 1977). The core of Leontiev's work is the proposal that we can examine human processes from the perspective ...
The activity theory of aging, also known as the implicit theory of aging, normal theory of aging, and lay theory of aging, proposes that aging occurs with more positive outcomes when adults stay active and maintain social interactions as they get older. [1] Activity theory suggests that the aging process is slowed or delayed, and quality of ...
There are three different types of data models produced while progressing from requirements to the actual database to be used for the information system. [2] The data requirements are initially recorded as a conceptual data model which is essentially a set of technology independent specifications about the data and is used to discuss initial ...