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  • Space manufacturing — is the production of manufactured goods in an environment outside a planetary atmosphere. Typically this includes conditions of microgravity and hard vacuum.Manufacturing in space has several potential advantages over Earth based industry.# The… …   Wikipedia

  • Gradient — In vector calculus, the gradient of a scalar field is a vector field which points in the direction of the greatest rate of increase of the scalar field, and whose magnitude is the greatest rate of change.A generalization of the gradient for… …   Wikipedia

  • Space tether — Artist s conception of satellite with a tether Space tethers are cables, usually long and very strong, which can be used for propulsion, stabilization, or maintaining the formation of space systems by determining the trajectory of spacecraft and… …   Wikipedia

  • Gradient descent — For the analytical method called steepest descent see Method of steepest descent. Gradient descent is an optimization algorithm. To find a local minimum of a function using gradient descent, one takes steps proportional to the negative of the… …   Wikipedia

  • gradient — /gray dee euhnt/, n. 1. the degree of inclination, or the rate of ascent or descent, in a highway, railroad, etc. 2. an inclined surface; grade; ramp. 3. Physics. a. the rate of change with respect to distance of a variable quantity, as… …   Universalium

  • Gradient theorem — The gradient theorem, sometimes also known as the fundamental theorem of calculus for line integrals, says that a line integral through a gradient field (any irrotational vector field can be expressed as a gradient) can be evaluated by evaluating …   Wikipedia

  • Space Flyer Unit — The nihongo|Space Flyer Unit|宇宙実験・観測フリーフライヤ|Uchū Jikken Kansoku Free Flyer was a spacecraft which was launched by Japan on Mar. 18, 1995. [http://www.daviddarling.info/encyclopedia/S/SFU.html Main Reference] Main Reference] Technical data The… …   Wikipedia

  • Gradient conjecture — In mathematics, the gradient conjecture, due to René Thom, was proved in 2000 by K. Kurdyka, T. Mostowski and A. Parusinski. It states that given an analytic function f in R n and a trajectory x ( t ) of the gradient vector field of f having a… …   Wikipedia

  • Scale space — theory is a framework for multi scale signal representation developed by the computer vision, image processing and signal processing communities with complementary motivations from physics and biological vision. It is a formal theory for handling …   Wikipedia

  • Scale-space segmentation — or multi scale segmentation is a general framework for signal and image segmentation, based on the computation of image descriptors at multiple scales of smoothing. One dimensional hierarchical signal segmentationWitkin s seminal work in scale… …   Wikipedia

  • Outer space — For other uses, see Outer space (disambiguation). The boundaries between the Earth s surface and outer space, at the Kármán line, 100 km (62 mi) and exosphere at 690 km (430 mi). Not to scale Outer space is the void that exists beyond any… …   Wikipedia

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