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  2. TRS-80 Model 4 - Wikipedia

    en.wikipedia.org/wiki/TRS-80_Model_4

    The Model 4D is the last computer to bear the "TRS-80" name. It retailed for $1199 at its introduction in 1985. During 1987–1988 the retail stores removed the Model 4Ds from display but they were kept in the yearly computer catalog and were available by special order through 1991, [30] when they were closed out for $599. Parts and repair ...

  3. Building information modeling - Wikipedia

    en.wikipedia.org/wiki/Building_information_modeling

    Building information model of a mechanical room developed from lidar data. Building information modeling (BIM) is an approach involving the generation and management of digital representations of the physical and functional characteristics of buildings or other physical assets and facilities.

  4. Appreciative inquiry - Wikipedia

    en.wikipedia.org/wiki/Appreciative_inquiry

    Appreciative inquiry (AI) is a model that seeks to engage stakeholders in self-determined change.According to Gervase Bushe, professor of leadership and organization development at the Beedie School of Business and a researcher on the topic, "AI revolutionized the field of organization development and was a precursor to the rise of positive organization studies and the strengths based movement ...

  5. Four-dimensional space - Wikipedia

    en.wikipedia.org/wiki/Four-dimensional_space

    Four-dimensional space (4D) is the mathematical extension of the concept of three-dimensional space (3D). Three-dimensional space is the simplest possible abstraction of the observation that one needs only three numbers, called dimensions , to describe the sizes or locations of objects in the everyday world.

  6. Eight disciplines problem solving - Wikipedia

    en.wikipedia.org/wiki/Eight_Disciplines_Problem...

    Eight Disciplines Methodology (8D) is a method or model developed at Ford Motor Company used to approach and to resolve problems, typically employed by quality engineers or other professionals. Focused on product and process improvement, its purpose is to identify, correct, and eliminate recurring problems. [ 1 ]

  7. Fourth dimension in art - Wikipedia

    en.wikipedia.org/wiki/Fourth_dimension_in_art

    An illustration from Jouffret's Traité élémentaire de géométrie à quatre dimensions.The book, which influenced Picasso, was given to him by Princet. New possibilities opened up by the concept of four-dimensional space (and difficulties involved in trying to visualize it) helped inspire many modern artists in the first half of the twentieth century.

  8. 4-manifold - Wikipedia

    en.wikipedia.org/wiki/4-manifold

    The homotopy type of a simply connected compact 4-manifold only depends on the intersection form on the middle dimensional homology. A famous theorem of Michael Freedman () implies that the homeomorphism type of the manifold only depends on this intersection form, and on a / invariant called the Kirby–Siebenmann invariant, and moreover that every combination of unimodular form and Kirby ...