A polygonal approximation technique using reverse polygonization is presented in this paper. This method rectifies the reverse polygonization in previous publications since it captures an efficient approximation independent to all initial points of curves. previous algorithms do not account for this, the algorithm presented in this article is more accurate than previous, specially when specifie...

The present paper deals with some characterizations of rectifying and osculating curves on a smooth surface respect to the reference frame {T?,N?,T?×N?}. We have computed components position vectors along T?,N?,T?×N? then investigated their invariancy under isometry surfaces, it is shown that they are invariant iff either normal curvature curve or vector in direction tangent curve.

In this paper, we study the special tube surfaces generated by rectifying curves with respect to Darboux frame in terms of geodesic curvature, normal curvature and torsion Galilean 3-space. During establish some definite results geodesics on specific help Clairaut’s theorem detail compute Gaussian mean frame. After that, considering conditions curvatures surface, give theorems for $v$-parameter...

The curves on well-logging parameter graph are very important to reservoir description. But how to keep the parameter graphs permanently and use the data implied in those curves efficiently are still open problems in petroleum industry. In this paper, we contribute an approach to digitizing well log curves and storing the digitized information into Oracle database or data file server with multi...

A heterojunction has been fabricated by growing a YBa2Cu3O7− YBCO film of the thickness of 1000 Å on a 0.5 wt %Nb-doped SrTiO3 STON crystal, and its resistive behavior was experimentally studied. The strong asymmetry of the current-voltage I–V relation with respect to bias polarity indicates an excellent rectifying property of the junction in the whole temperature range studied. The superconduc...

In this work, we firstly introduce notions of principal directed curves and donor which are associated a Frenet curve in the dual Lorentzian space D 3 1 D13 . We give some relations between curvature torsion curve. show that general helix is plane obtain equation by using position vector Then circle $\mathbb{D}^{2}$ or hyperbola $\mathbb{D}_{1}^{2}$ slant $\mathbb{D}_{1}^{3}$ helix, respectivel...