Kinematic mapping is used for preliminary development of an algorithm for the approximate synthesis of planar four-bar mechanisms for rigid body guidance. Both dyad type and dimensions are determined. Planar mechanism coupler motions are represented as the curves of intersection of a pair of quadric constraint surfaces, one for each of two dyads. The problem reduces to identifying the two best ...

In the paper, the geometric Lagrange interpolation by quadratic parametric patches is considered. The freedom of parameterization is used to raise the number of interpolated points from the usual 6 up to 10, i.e., the number of points commonly interpolated by a cubic patch. At least asymptotically, the existence of a quadratic geometric interpolant is confirmed for data taken on a parametric su...

In this paper, we propose a method for finding certain eigenvalues of a generalized eigenvalue problem that lie in a given domain of the complex plane. The proposed method projects the matrix pencil onto a subspace associated with the eigenvalues that are located in the domain via numerical integration. The projection produces a small pencil with Hankel matrices.

surfaces of order t, the image of C2s-i for a particular surface is a conical curve of order (25 — 1)/. In Sr, the image of any point on the base Msi or Mt2 is a conic. The lines joining points of M to a particular point of/ i form a conical primal with a point vertex. I t is met by the corresponding primal of the second pencil in a manifold M\^-2)t or M\2^-i)t according as there is contact or ...

The Ku-band scatterometer onboard China France Oceanography Satellite (CFOSAT) observes the sea surface with two conically scanning fan beams. Compared to prior pencil beam scatterometers, this innovative observing mechanism provides more independent backscatter measurements at varying incidence and azimuth angles, as such it brings challenges for wind inversion, particularly under rainy condit...

This paper is devoted to the study of perturbations a matrix pencil, structured or unstructured, such that perturbed pencil will reproduce given deflating pair while maintaining invariance complementary pair. If latter unknown, it referred as no spillover updating. The specific structures considered in this include symmetric, Hermitian, ?-even, ?-odd and ?-skew-Hamiltonian/Hamiltonian pencils. ...

Reports of graphite pencil lead injuries to the eye are rare. Although graphite is considered to remain inert in the eye, it has been known to cause severe inflammation and damage to ocular structures. We report a case of a 12-year-old girl with intracorneal graphite foreign bodies following a graphite pencil injury.

PURPOSE To verify the clinical pencil beam dose calculation algorithm for passive scattering proton therapy using field with large range in tissue, i.e. in prostate cancer, using a Monte Carlo (MC) simulation system. METHODS Previously treated prostate cancer cases were randomly selected from our patient database. All patients received the same dose prescription of 50Gy (25 fractions) to plan...

This paper presents the advanced sonar sensor model capable of building an underwater terrain map based on the Bayes filter in the manner of the occupancy grid. The proposed sonar sensor model basically considers the losses of received ultrasound intensity according to the underwater absorption and reflection on a terrain surface. The Bayes filter including the advanced sonar sensor model is ap...