Testing Equation Method Modification for Demanding Energy Measurements Verification

Impact Toughness Modification of NIST Low-Energy Charpy Verification Specimens for Testing at Room Temperature

The possibility for the National Institute for Standards and Technology (NIST) to certify Charpy reference specimens for testing at room temperature (21 °C ± 1 °C) instead of −40 °C was investigated in a previous study, in which a slightly increased likelihood of specimen jamming was observed at the low-energy level (13 J to 20 J). Moreover, there is a concern that the higher impact toughness o...

A modification of Haffner's method for testing analgesics.

高木 博司 ・犬飼 利也 ・中間 元隆 Haffner's tail-pinch method (1) for testing analgesic drugs has been adopted in many laboratories either in the original method (2-4, 17) or in the varieties of modifications (5-7). Certain objections can, however, be raised against the use of the Haffner's method; the intensity of the painful stimulus produced by this method is not shown in figures, neither is it varied qua...

Dark Energy as a Modification of the Friedmann Equation

Dark energy could actually be the manifestation of a modification to the Friedmann equation arising from new physics (e.g., extra dimensions). Writing the correction as (1 − ΩM)H α/H 0 , we explore the phenomenology and detectability of such. We show that: (i) α must be < ∼ 1; (ii) such a correction behaves like dark energy with equation-of-state weff = −1 + α2 in the recent past (10 > z ≫ 1) a...

Using Psychophysiological Measurements in Physically Demanding Virtual Environments

Psychophysiological evaluation of mental workload in humancomputer interaction has generally been limited to situations with little physical load. This paper examines the viability of using heart rate, skin conductance, respiration and peripheral skin temperature as psychophysiological indicators in a physically demanding task performed in a simple virtual environment. Respiratory rate was foun...

A method for solving first order fuzzy differential equation