نتایج جستجو برای: length and initial curvature imperfections
تعداد نتایج: 16882373 فیلتر نتایج به سال:
BACKGROUND AND OBJECTIVE To compare the architecture of single plane self-sealing clear corneal incision (SP-CCI) and shallow grooved self-sealing clear corneal incision (SG-CCI) after cataract surgery using Fourier-domain optical coherence tomography (FD-OCT). PATIENTS AND METHODS An FD-OCT system with a corneal adaptor module was used to image the corneal incisions in radial sections in 44 ...
Principal curves arising as an essential construct in dimensionality reduction and pattern recognition have recently attracted much attention from theoretical as well as practical perspective. Existing methods usually employ the first principal component of the data as an initial estimate of principal curves. However, they may be ineffective when dealing with complex data with self-intersecting...
The Monte Carlo program CATCH (Capture And Transport of CHarged particles in a crystal) for the simulation of planar channelling in bent crystals is presented. The program tracks a charged particle through the distorted-crystal lattice with the use of continuous-potential approximation and the non-diffusion approach to the processes of scattering on electrons and nuclei. The output consists of ...
The refractive index of a liquid is determined with 0.0003 accuracy from measurements of laser beam displacement by a liquid-filled standard 10 mm spectrophotometer cell. The apparatus and methods are described and the results of measurements at λ=1064 nm and T=25.0 °C for 30 solvents and deuterated solvents are presented. Several sources of potential systematic errors as large as 0.003 are ide...
A polyhelix is continuous space curve with continuous Frenet frame that consists of a sequence of connected helical segments. The main result of this paper is that given n points in space, there exist infinitely many polyhelices passing through these points. These curves are by construction continuous with continuous derivatives and are completely specified by 3n numbers, i.e., the initial posi...
Penile traction therapy has traditionally been implemented to increase penile length but has recently been investigated for reducing the curvature associated with Peyronie's disease. The results of a few initial investigations have been conflicting, and further research is needed to confirm the true benefit of such therapy and its potential role in treating Peyronie's disease as both a monother...
In this paper we consider the problem of reconstructing a curve that is partially hidden or corrupted by minimizing the functional ∫ √ 1 +K2 γ ds, depending both on length and curvature K. We fix starting and ending points as well as initial and final directions. For this functional we discuss the problem of existence of minimizers on various functional spaces. We find non-existence of minimize...
Background and Aim: Proper shaping and cleaning of the root canal system is one of the most important aspects of endodontic treatment. To estimate the canal length before instrumentation in endodontic treatment, traditionally, conventional radiographic techniques and recently Direct Digital Radiography (DDR) are applied. The application of computer technology to radiography has allowed less exp...
in this study we produced a new method for solving regular dierential equations with step size h and taylor series. this method analyzes a regular dierential equation with initial values and step size h. this types of equations include quadratic and cubic homogenous equations with constant coecients and cubic and second- level equations.
Linear n-local networks are compatible with quantum repeaters based entanglement distribution protocols. Different sources of imperfections such as error in generation, communication over noisy channels and measurements result decay quantumness across networks. From practical perspectives it becomes imperative to analyze non classicality network correlations presence different types noise. Pres...
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