نتایج جستجو برای: pertubation

تعداد نتایج: 98  

Journal: :Scientia Iranica 2021

This study aims to explain the interaction between results measured in turning operation. For this purpose, Ti 6Al-4V alloy workpiece was machined on CNC lathe. Surface roughness (Ra), vibration and energy consumption values were determined by turning. Experimental analyzed statistically. Response surface method (RSM) grey relational analysis used statistical analysis. In RSM analysis, regressi...

2009
Krikamol Muandet Sanparith Marukatat Cholwich Nattee

There has recently been a large effort in using unlabeled data in conjunction with labeled data in machine learning. Semi-supervised learning and active learning are two well-known techniques that exploit the unlabeled data in the learning process. In this work, the active learning is used to query a label for an unlabeled data on top of a semisupervised classifier. This work focuses on the que...

1999
CÉSAR CASTILHO

In this paper we study the motion of a charged particle on a Riemmanian surface under the influence of a positive magnetic field B. Using Moser’s Twist Theorem and ideas from classical pertubation theory we find sufficient conditions to perpetually trap the motion of a particle with a sufficient large charge in a neighborhood of a level set of the magnetic field. The conditions on the level set...

2003
D Gotta

The measurement of the pion–nucleon scattering lengths constitutes a high–precision test of the methods of Chiral Pertubation Theory (χPT), which is the low–energy approach of QCD. The πN s–wave scattering lengths are related to the strong–interaction shift ǫ1s and width Γ1s of the s–states of the pionic hydrogen atom. ǫ1s and Γ1s are determined from the measured energies and line widths of X–r...

1997
Ian Vernon

In this report various aspects of Finite Temperature and Density Quantum Field Theory are discussed. The main point being the calculation of Green’s functions in this context, in which pertubation theory is used. The motivation for calculating Green’s functions comes from their wide application in modern Physics. The techniques that are presented here are used in such areas as condensed matter,...

2016
Colleen Louise McHenry Richard K. Shields

Mechanical loading can modulate tissue plasticity and has potential applications in rehabilitation science and regenerative medicine. To safely and effectively introduce mechanical loads to human cells, tissues, and the entire body, we need to understand the optimal loading environment to promote growth and health. The purpose of this research was 1) to validate a limb vibration and compression...

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