Blindsight is the rare and paradoxical ability of some human subjects with occipital lobe brain damage to discriminate unseen stimuli in their clinically blind field defects when forced-choice procedures are used, implying that lesions of striate cortex produce a sharp dissociation between visual performance and visual awareness. Skeptics have argued that this is no different from the behavior ...

To counter response distortions associated with the use of rating scales (a.k.a. Likert scales), items can be presented in a comparative fashion, so that respondents are asked to rank the items within blocks (forced-choice format). However, classical scoring procedures for these forced-choice designs lead to ipsative data, which presents psychometric challenges that are well described in the li...

An approach is developed to analyze the multiharmonic forced response of large-scale finite element models of bladed disks taking account of the nonlinear forces acting at the contact interfaces of blade roots. Area contact interaction is modeled by area friction contact elements which allow for friction stresses under variable normal load, unilateral contacts, clearances, and interferences. Ex...

One of the most common tasks in vibration analysis is the determination of the steady-state response of a system to harmonic forcing. This is also true in AC electrical circuit analysis. The most common case encountered in vibration engineering is that of the forced underdamped system. In this case, the transient portion of the response vanishes exponentially as e−ζωt, where ζ is the so-called ...

Depression is one of the most common psychiatric disorders that may result in significant consequences in active population of the society. In traditional manuscripts there are many indications about the antidepressant effects of rose oil, but so far no scientific research has been done about this subject. The purpose of present study was to determine the antidepressant effects of rose oil and ...

A non-linear modal analysis procedure is presented for the forced response of non-linear structural systems. It utilizes the notion of invariant manifolds in the phase space, which was recently used to define non-linear normal modes and the corresponding non-linear modal analysis for unforced vibratory systems. For harmonic forcing, a similar procedure could be formulated, simply by augmenting ...

Nine patients with reversible obstructive airways disease were studied to compare the bronchodilator response to a combination of fenoterol and ipratropium aerosols with two dose levels of fenoterol alone. Using a double-blind, cross-over, single dose regime, 200 micrograms fenoterol hydrobromide and 80 micrograms ipratropium bromide was compared to 400 micrograms fenoterol + placebo, and to 20...

The paper describes a numerical method based on modal work approach to evaluate the forced response of bladed disks and its validation against results obtained by commercial FEM code. Forcing functions caused rotor–stator interactions are extracted from CFD unsteady solutions properly decomposed in time space separate spinning perturbation acting disk cyclic environment. was firstly applied dum...