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  2. Boundary-work - Wikipedia

    en.wikipedia.org/wiki/Boundary-work

    Boundary-work is part of science studies. In boundary-work , boundaries, demarcations, or other divisions between fields of knowledge are created, advocated, attacked, or reinforced. Such delineations often have high stakes for the participants, [ 1 ] and carry the implication that such boundaries are flexible and socially constructed .

  3. Stefan problem - Wikipedia

    en.wikipedia.org/wiki/Stefan_problem

    This is an energy balance which defines the position of the moving interface. Note that this evolving boundary is an unknown (hyper-)surface; hence, Stefan problems are examples of free boundary problems. Analogous problems occur, for example, in the study of porous media flow, mathematical finance and crystal growth from monomer solutions. [1]

  4. Closed manifold - Wikipedia

    en.wikipedia.org/wiki/Closed_manifold

    However, this definition doesn’t cover some basic objects such as a closed disk, so authors sometimes define a manifold with boundary and abusively say manifold without reference to the boundary. But normally, a compact manifold (compact with respect to its underlying topology) can synonymously be used for closed manifold if the usual ...

  5. Boundary object - Wikipedia

    en.wikipedia.org/wiki/Boundary_object

    This concept has since been widely cited and the concept of a boundary object has been adopted in computer science (particularly computer supported cooperative work), information science, [4] and management, particularly when considering cross-disciplinary work and collaboration, [5] either within one organization or with the boundary object helping to focus the efforts of multiple organizations.

  6. Breaking Boundaries - Wikipedia

    en.wikipedia.org/wiki/Breaking_Boundaries

    The film was released on Netflix on 4 June 2021. [2] Alongside the film's release, a book of the same name was published, with a foreword from Greta Thunberg. [3] [a] The film was directed by Jon Clay, and executive produced by Alastair Fothergill, Colin Butfield, Kate Garwood, Keith Scholey, and Jochen Zeitz. [4]

  7. The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

  8. Science project - Wikipedia

    en.wikipedia.org/wiki/Science_project

    A science project is an educational activity for students involving experiments or construction of models in one of the science disciplines. Students may present their science project at a science fair, so they may also call it a science fair project. Science projects may be classified into four main types.

  9. Hartle–Hawking state - Wikipedia

    en.wikipedia.org/wiki/Hartle–Hawking_state

    More precisely, the Hartle-Hawking state is a hypothetical vector in the Hilbert space of a theory of quantum gravity that describes the wave function of the universe.. It is a functional of the metric tensor defined at a (D − 1)-dimensional compact surface, the universe, where D is the spacetime dimension.