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  2. Nodal precession - Wikipedia

    en.wikipedia.org/wiki/Nodal_precession

    The rate of precession depends on the inclination of the orbital plane to the equatorial plane, as well as the orbital eccentricity.. For a satellite in a prograde orbit around Earth, the precession is westward (nodal regression), that is, the node and satellite move in opposite directions. [1]

  3. Gaussian network model - Wikipedia

    en.wikipedia.org/wiki/Gaussian_network_model

    Figure 2: Schematic representation of nodes in elastic network of GNM. Every node is connected to its spatial neighbors by uniform springs. Distance vector between two nodes, i and j, is shown by an arrow and labeled R ij. Equilibrium positions of the ith and jth nodes, R 0 i and R 0 j, are shown in xyz coordinate system.

  4. Acid-growth hypothesis - Wikipedia

    en.wikipedia.org/wiki/Acid-growth_hypothesis

    Within the 20-year timespan, many scientists have actively contributed to examining and reevaluating Hager's acid-growth hypothesis. Despite the accumulation of observations that evidently identify the final target of the auxin-induced action to be H +-ATPase, which excretes H + protons to the apoplast and take in K + ions through its rectifying K + channel in the following years, the ...

  5. Boundary conditions in computational fluid dynamics - Wikipedia

    en.wikipedia.org/wiki/Boundary_conditions_in...

    Consider situation solid wall parallel to the x-direction: Assumptions made and relations considered- The near wall flow is considered as laminar and the velocity varies linearly with distance from the wall; No slip condition: u = v = 0. In this we are applying the “wall functions” instead of the mesh points.

  6. Regression analysis - Wikipedia

    en.wikipedia.org/wiki/Regression_analysis

    In linear regression, the model specification is that the dependent variable, is a linear combination of the parameters (but need not be linear in the independent variables). For example, in simple linear regression for modeling n {\displaystyle n} data points there is one independent variable: x i {\displaystyle x_{i}} , and two parameters, β ...

  7. Orbital node - Wikipedia

    en.wikipedia.org/wiki/Orbital_node

    The line of nodes is the straight line resulting from the intersection of the object's orbital plane with the plane of reference; it passes through the two nodes. [2]

  8. Frisch–Waugh–Lovell theorem - Wikipedia

    en.wikipedia.org/wiki/Frisch–Waugh–Lovell...

    The origin of the theorem is uncertain, but it was well-established in the realm of linear regression before the Frisch and Waugh paper. George Udny Yule's comprehensive analysis of partial regressions, published in 1907, included the theorem in section 9 on page 184. [8]

  9. Theil–Sen estimator - Wikipedia

    en.wikipedia.org/wiki/Theil–Sen_estimator

    The dashed green line represents the ground truth from which the samples were generated. In non-parametric statistics, the Theil–Sen estimator is a method for robustly fitting a line to sample points in the plane (simple linear regression) by choosing the median of the slopes of all lines through pairs of points.