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In this paper, design and realization of a Low Profile Archimedean Spiral Antenna is presented. The Low Profile Archimedean Spiral Antenna is printed on a substrate. The bidirectional radiation patterns of the antenna are converted to ...

For every n, we construct two arcs in the plane that intersect at least n times and do not form spirals. The construction is in three stages: we first exhibit two closed curves on the torus that do not form double spirals, then two arcs on the ...

Medical data are present in large amount and this is difficult to process for the diagnosis and Healthcare organization requires effective technique to handle big data. Existing techniques in medical diagnosis have limitations of ...

• The major idea of this paper is to resolve the imbalance and overfitting issues.

Whirlpools, by the Dutch graphic artist M. C. Escher, is a woodcut print in which fish interlock as a double spiral tessellation. Inspired by this print, in this article we extend the idea and present a general method to create Escher-like interlocking ...

In this paper, using both hand-drawn and computer-drawn graphics, we establish a method to generate advanced Escher-like spiral tessellations. We first give a way to achieve simple spiral tilings of cyclic symmetry. Then, we introduce several ...

Recently, artificial neural networks have been gaining momentum in the field of gravitational wave astronomy, for example in surrogate modelling of computationally expensive waveform models for binary black hole inspiral and merger. ...

While modeling planar parametric curves, it is desirable to approximate them efficiently by arc splines with fewest segments within the prescribed tolerance. Planar arc splines are ideal for describing the path of a numerically controlled cutting ...

Spiral segments are useful in the design of fair curves. They are important in CAD/CAM applications, the design of highway and railway routes, trajectories of mobile robots and other similar applications. The quintic Pythagorean-hodograph (PH) curve ...

Selection of appropriate Software Development Life Cycles can increase projects success. Depending on the selected SDLC Software Development Life Cycle, one can decrease development time/cost, minimize overhead and risk exposure, manage uncertainty, ...

Biarc curves are considered from the standpoints of the theory of spirals and Mobius maps. Parametrization and reference formulae, covering the whole variety of biarcs, are proposed. A region is constructed, enclosing all spirals with common circles of ...

In this paper, we study the Riemann problem for a two-dimensional hyperbolic system of conservation laws with initial data projecting exactly three contact discontinuities. We use the generalized characteristic analysis method to analyze interactions of ...

We present superspirals, a new and very general family of fair curves, whose radius of curvature is given in terms of a completely monotonic Gauss hypergeometric function. The superspirals are generalizations of log-aesthetic curves, as well as other ...

Spirals are curves with single-signed, monotone increasing or decreasing curvature. A spiral can only interpolate certain G^2 Hermite data that is referred to as admissible G^2 Hermite data. In this paper we propose a biarc-based subdivision scheme that ...

In this paper, we describe an algorithm for generating a C-shaped G^2 multispiral transition curve between two non-parallel straight lines. The G^2 multispiral is a curve that consists of two or more log-aesthetic curve segments connected with curvature ...

Spiral segments are useful in the design of fair curves. They are important in CAD/CAM applications, the design of highway and railway routes, trajectories of mobile robots and other similar applications. Cubic Bezier curves are commonly used in curve ...

Log-aesthetic curves (LACs) have recently been developed to meet the requirements of industrial design for visually pleasing shapes. LACs are defined in terms of definite integrals, and adaptive Gaussian quadrature can be used to obtain curve segments. ...

The quality of plane layout design of the disc cutters for the full-face rock tunnel boring machine (TBM) directly affects the balance of force distribution on the cutter head during the excavating. Various layout patterns have been adopted in practice ...

A bounding region for spiral curve segments shaped by two circular arcs, parts of the osculating circles at the spiral's endpoints, and two lines is introduced. This bounding region, denoted spiral fat arc (SFA) is simple to construct and process, and ...

This paper finds reachable regions for a single segment of parametric rational cubic Bezier spiral matching G^2 Hermite data. First we derive spiral conditions for rational cubics and then we use a free parameter to find the admissible region for a ...

This paper finds a spiral segment matching G2 Hermite conditions for a single Pythagorean hodograph quintic polynomial. We have significantly simplified the existing methods with computationally stable spiral conditions and discovers more spiral regions ...