نتایج جستجو برای: incremental harmonic balance

تعداد نتایج: 228387  

Journal: :Journal of the American Geriatrics Society 2011
Jennifer C Davis Carlo A Marra M Clare Robertson Mehdi Najafzadeh Teresa Liu-Ambrose

UNLABELLED To determine whether the health and cost benefits of resistance training were sustained 12 months after formal cessation of the intervention. DESIGN Cost-utility analysis conducted alongside a randomized controlled trial. SETTING Community-dwelling women aged 65 to 75 living in Vancouver, British Columbia. PARTICIPANTS One hundred twenty-three of the 155 community-dwelling wome...

This article analyzes a strongly nonlinear oscillator with cubic and harmonic restoring force and proposes an efficient analytical technique based on the modified energy balance method (MEBM). The proposed method incorporates higher-order approximations. After applying the proposed MEBM, a set of complicated higher-order nonlinear algebraic equations are obtained. Higher-order nonlinear algebra...

1999
Ognen J. Nastov

Harmonic balance (HB) methods are frequency-domain algorithms used for high accuracy computation of the periodic steady-state of circuits. Matrix-implicit Krylov-subspace techniques have made it possible for these methods to simulate large circuits more efficiently. However, the harmonic balance methods are not so efficient in computing steady-state solutions of strongly nonlinear circuits with...

2011
Christopher J. Rasmussen Aleksey Vishnyakov Alexander V. Neimark

We developed and employed the incremental gauge cell method to calculate the chemical potential (and thus free energies) of long, flexible homopolymer chains of Lennard-Jones beads with harmonic bonds. The free energy of these chains was calculated with respect to three external conditions: in the zero-density bulk limit, confined in a spherical pore with hard walls, and confined in a spherical...

Journal: :The journal of physical chemistry. A 2018
Amber Jain Joseph E Subotnik

We investigate the ability of mixed quantum-classical methods to capture the dynamics of vibrational energy relaxation. Several methods, including surface hopping, and Ehrenfest and symmetrical quasiclassical (SQC) dynamics, are benchmarked for the exactly solvable model problem of a harmonic oscillator bilinearly coupled to a bath of harmonic oscillators. Results show that, very often, one can...

2010
Arne Eigenfeldt Philippe Pasquier

In this paper, we describe a method of generating harmonic progressions using case-based analysis of existing material that employs a variable-order Markov model. Using a unique method for quantifying harmonic complexity and tension between chord transitions, as well as specifying a desired bass-line, the user specifies a 3 dimensional vector, which the realtime generative algorithm attempts to...

2014

To predict nonlinear circuit behaviour, harmonic-balance (HB) is a popular and useful frequency-domain technique. But given its mathematical nature, it can only converge to mathematical solutions being harmonically related to the input sources into the circuit. Nevertheless, the mathematical solutions to a nonlinear system do not necessarily need to be harmonically related to the input signals ...

1998
Vesna Radisic Yongxi Qian Tatsuo Itoh

This paper presents three novel architectures for high-efficiency amplifiers relying on new harmonic-tuning techniques. These methods yield high-efficiency power amplifiers and reduce unwanted harmonic radiation from the transmitter front end. The first method uses the active integrated-antenna approach to perform harmonic tuning. The second method uses a nontraditional periodic microstrip filt...

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