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Forward–backward semiclassical dynamics ͑FBSD͒ methods are emerging as a practical way of simulating dynamical processes in large quantum systems. In this paper we develop a pair-product approximation to the coherent state density. This form is accurate at low temperatures, enhancing significantly the convergence of Monte Carlo methods and thus allowing the… (More)

We introduce an untethered interface that eliminates the annoyance of wires etc. by using air-jets to establish force feedback. Attendees experience interaction with a virtual object that responds to being "touched". The sense of touch is provided by air-jets while visual clues are provided by a projection-based stereo display.

Albumin (Alb) is mixture of reduced and oxidized forms. It is physiologically significant to determine Alb(red)%, which is the proportion of reduced Alb in the sum of Alb. However, reduced Alb in both blood and plasma samples is easily converted to oxidized Alb. Accordingly, the stabilization of Alb in samples is necessary to determine precise Alb(red)%… (More)

- C. Yang, W. Liu, A. Nakayama
- 2009

Forced convection in a tube with its core partially filled with a porous medium is treated both analytically and numerically to find its high heat transfer performance. Assuming a fully developed flow subject to a constant heat flux, both friction factor and Nusselt number are presented explicitly as functions of the Reynolds number, Darcy number and porous… (More)

- Akira Nakayama
- 2009

M. Minoux considered the maximum balanced flow problem, which is a maximum flow problem with an additional constraint described in terms of a balancing rate function. In this paper, we propose an algorithm for the maximum balanced flow problem which is practically fast and simple. When the balancing rate function is constant, the proposed algorithm requires… (More)

Minoux considered the manmum balanced /low problem, i.e. the problem of finding a maximum flow in a two-terminal network Af = (V, A) with source s and sink t satisfying the constraint that any arc-flow of Af is bounded by a fixed proportion of the total flow value from s to t , where V is vertex set and A is arc set. Several efficient algorithms, so far,… (More)

We use quantum-correction factors to calculate approximately the quantum velocity time-correlation function (TCF) of supercritical Lennard-Jones argon from the classical TCF. We find that for this quite classical system, several different quantum-correction schemes yield essentially identical results for the real and imaginary parts of the quantum TCF, and… (More)

A rigorous derivation of the macroscopic governing equations for convective flow in a nanofluid saturated metal foam has been conducted using the volume averaging theory originally developed for analyzing heat and fluid flow in porous media. The nanoparticle conservation equation at a pore scale based on the Buongiorno model has been integrated over a local… (More)