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A multivariate process capability index with a spatial coefficient

Journal of Semiconductors 2013年第2期34卷 129-132页

作者：王少熙王明辛樊晓桠张盛兵韩茹 School of Software and Microelectronics Northwestern Polytechnical University

After analyzing the multivariate Cpm method （Chan et al. 1991）, this paper presents a spatial multivariate process capability index （PCI） method, which can solve a multivariate off-centered case and may provide references for assuring and improving process quality level while achieving an overall evaluation of process quality. Examples for calculating multivariate PCI are given and the experimental results show that the systematic method presented is effective and actual.

关键词： process process capability index multivariate off-center

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Analytical modeling for rapid design of bistable buckled beams

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Theoretical & Applied Mechanics Letters 2019年第4期9卷 264-272,I0003页

作者： Wenzhong Yan Yunchen Yu Ankur Mehta Samueli School of Engineering University of CaliforniaLos Angeles

Double-clamped bistable buckled beams demonstrate great versatility in various fields such as robotics,energy harvesting,and microelectromechanical system(MEMS).However,their design often requires time-consuming and expensive *** this work,we present a method to easily and rapidly design bistable buckled beams subjected to a transverse point *** on the Euler–Bernoulli beam theory,we establish a theoretical model of bistable buckled beams to characterize their snapthrough *** model is verified against the results from a finite element analysis(FEA)model,with maximum discrepancy less than 7%.By analyzing and simplifying our theoretical model,we derive explicit analytical expressions for critical behavioral values on the force-displacement curve of the *** behavioral values include critical force,critical displacement,and travel,which are generally sufficient for characterizing the snapthrough properties of a bistable buckled *** on these analytical formulas,we investigate the influence of a bistable buckled beam's key design parameters,including its actuation position and precompression,on its critical behavioral values,with our results validated by FEA *** analytical method enables fast and computationally inexpensive design of bistable buckled beams and can guide the design of complicated systems that incorporate bistable mechanisms.

关键词： Bistable buckled beam Theoretical model Snap-through characteristics off-center actuation Analytical expression Rapid design

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Discovery &Proofs of a Nucleus of Mass and Charge in the Photons/Quantum Particles

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Journal of Modern Physics 2018年第12期9卷 2170-2192页

作者： Narendra Swarup Agarwal Gurgaon India

This work discovers and proves that all the photons/quantum particles have a “Nucleus of mass and charge.” The nucleus is located off-center in the particles. The constructive, destructive and intermediate Interference phenomena decisively discover and prove the presence of only one nucleus of the mass located off-center in a photon, like an atomic nucleus. The mass in the nucleus of a photon develops varying forces to move the photon as a wave. The Wave-Particle Duality is the most significant proof of such a nucleus of mass. The formation of an electromagnetic wave by a photon proves the presence of a charge in the nucleus of the photon. The Quantum Theory, developed about 100 years back, simplified the understanding of matter and energy at the atomic/subatomic levels. However, the Quantum Theory remains incomplete and cannot explain even a single quantum phenomenon. The New Quantum Theory, developed in the year 2012, is based on the similarity of an atomic nucleus as well as the solar system with the Sun as its nucleus of the mass and the charge. The New Quantum Theory explains all the Quantum Phenomena and matches with the Classical Mechanics as well as the Theory of Electromagnetism. The experiments described in this work, using high precision instruments, determine the mass, the charge and the diameter of a photon/quantum particle.

关键词： Nucleus off-center Location Mass Acceleration Force and Charge

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