Using two sets of high-precision Monte Carlo data for the two-dimensional XY model in the Villain formulation on square L3L lattices, the scaling behavior of the susceptibility x and correlation length j at the Kosterlitz-Thouless phase transition is analyzed with emphasis on multiplicative logarithmic corrections (lnL) in the finite-size scaling region and (lnj) in the high-temperature phase n...

Discrete Cosine transform (DCT) is an important tool in digital signal processing. In this paper, a novel algorithm to perform DCT multiplierlessly is proposed. First, by modular mapping and truncating Taylor series expansion, the DCT is expressed in the form of the product of the constants and discrete moments. Second, by performing appropriate bit operations and shift operations in binary sys...

hot rolling of a large ring of titanium alloy (lrt) is a highly nonlinear incremental forming process with coupled mechanical and thermal behaviors (mtbs) which significantly affect microstructure and properties of the ring. the feed rate of idle roll and the rotational speed of driver roll have major effects on ovality of the ring. in this paper, the effects of these parameters on the ovality ...

Future aircraft designs look set to use longer wingspans increase the aspect ratio and therefore overall aerodynamic efficiency of airframe. Such larger also reduce roll rates require increased control surface area achieve maneuver requirements for certification. In this work, effect using flared folding wingtips (FFWTs) on performance simple wings is investigated numerically experimentally. A ...

Lateral–directional stability is a critical issue for the design of any kind aircraft. For hypersonic waverider, nonaxisymmetric, flat, and slender geometric feature makes it susceptible to problem lateral–directional instability. Therefore, influence on static dynamic waverider studied so as enable designer consider this in preliminary aircraft stage. A series power-law waveriders generated at...

Objective: In pattern recognition and medical diagnosis, similarity measure is an important mathematical tool. To overcome some disadvantages of existing cosine similarity measures of simplified neutrosophic sets (SNSs) in vector space, this paper proposed improved cosine similarity measures of SNSs based on cosine function, including single valued neutrosophic cosine similarity measures and in...

Abstract. In this paper we have studied p-th power integrability of functions sinxg(x) and sinxf(x) with a weight, where g(x) and f(x) denote the formal sum functions of sine and cosine trigonometric series respectively. This study may be taken as a continuation for some recent foregoings results proven by L. Leindler [3] and S. Tikhonov [7] employing the so-called rest bounded second variation...

This paper describes a model for magnetization reversal in polycrystalline Ferromagnetic/Antiferromagnetic exchange biased bilayers. We assume that the exchange energy can be expanded into cosine power series. We show that it is possible to fit experimental asymmetric shape of hysteresis loops in exchange biased bilayer for any direction of the applied field. The hysteresis asymmetry is discuss...