A number of studies of AH systems that dynamically position the headlights in the direction of curves have been evaluated.
Here, θ is the angle between the directions of curve L and coordinate line u; k 1 and k 2 are the normal curvatures of lines v = const, u = const, respectively.
Curvature, in mathematics, the rate of change of direction of a curve with respect to distance along the curve.
Then, on the basis of the Euler theorem (Dubrovin et al. 1992), the curvature k y of the line L can be equalized to appropriate normal curvature k norm of the surface Σ in the direction of the curve L. In its turn, the curvature k norm is expressed through principal curvatures k 1, k 2 of the surface Σ k^{text{norm}} = k_{y} = k_{1} cos^{2} theta + k_{2} sin^{2} theta.
In such a construction, the idea is to concentrate the change in direction of the curve, i.e., high curvature regions, into arbitrarily short sections.
The Charleston's exaggerated shape, different than the corset-like straightness of other brace models, worked to bend my spine in the opposite direction of the curve.
In the curve, x-, y-coordinate values represent the positions of AAs in the sequence and the direction of the curve, respectively.
Condition (1.4) is very important to conclude the direction of bifurcation curve.
Estimated parameters related to the direction of the curve, driving lane (bordering median or hard shoulder) and driving speed had found to have randomly distributed over the drivers.
An anterolateral incision curved proximally provides good reach of the key fracture parts and does not compromise future access for knee arthroplasty if due attention is given to the curve characteristics (Fig. 5); a projected midline incision should subtend an angle of at least 60° with the main direction of the curve.
