oscillating movement | reciprocating movement

reciprocating movement | oscillating movement | oscillating motion

pressure fluctuation

Definition: Voluntary, repetitive, stereotyped, nonfunctional (and often rhythmic) movements that do not form part of any recognized psychiatric or neurological condition. When such movements occur as symptoms of some other disorder, only the overall disorder should be recorded. The movements that are of a non self-injurious variety include: body-rocking, head-rocking, hair-plucking, hair-twisting, finger-flicking mannerisms, and hand-flapping. Stereotyped self-injurious behaviour includes repetitive head-banging, face-slapping, eye-poking, and biting of hands, lips or other body parts. All the stereotyped movement disorders occur most f ...[+++]requently in association with mental retardation (when this is the case, both should be recorded). If eye-poking occurs in a child with visual impairment, both should be coded: eye-poking under this category and the visual condition under the appropriate somatic disorder code. | Stereotype/habit disorder

Definition: A condition, so far found only in girls, in which apparently normal early development is followed by partial or complete loss of speech and of skills in locomotion and use of hands, together with deceleration in head growth, usually with an onset between seven and 24 months of age. Loss of purposive hand movements, hand-wringing stereotypies, and hyperventilation are characteristic. Social and play development are arrested but social interest tends to be maintained. Trunk ataxia and apraxia start to develop by age four years and choreoathetoid movements frequently follow. Severe mental retardation almost invariably results.

Definition: Syndromes in which the predominant manifestation is some form of tic. A tic is an involuntary, rapid, recurrent, nonrhythmic motor movement (usually involving circumscribed muscle groups) or vocal production that is of sudden onset and that serves no apparent purpose. Tics tend to be experienced as irresistible but usually they can be suppressed for varying periods of time, are exacerbated by stress, and disappear during sleep. Common simple motor tics include only eye-blinking, neck-jerking, shoulder- shrugging, and facial grimacing. Common simple vocal tics include throat-clearing, barking, sniffing, and hissing. Common com ...[+++]plex tics include hitting oneself, jumping, and hopping. Common complex vocal tics include the repetition of particular words, and sometimes the use of socially unacceptable (often obscene) words (coprolalia), and the repetition of one's own sounds or words (palilalia).

spindle sander | oscillating spindle sander

motion capture | MoCap | Mocap | motion tracking

During free transient oscillation of the sprung mass the vertical motion of the mass will follow a damped sinusoidal path (Figure 2).

(3) Where any wave frequency or seismic ground motion predicted for the production site of a self-elevating mobile production platform is close to the frequency of oscillation of the platform, a dynamic response calculation shall be performed as part of the analyses required by section 37 and the dynamic loads determined thereby shall be included in the relevant stress and fatigue analyses.

(3) Where any wave frequency or seismic ground motion predicted for the production site of a self-elevating mobile offshore production platform is close to the frequency of oscillation of the platform, a dynamic response calculation shall be performed as part of the analyses required by section 37 and the dynamic loads determined thereby shall be included in the relevant stress and fatigue analyses.

One thing I'll show you later is that there's a fair bit of turbulence and movement around people's sense of insecurity, and that really, even though we see people moving in and out of a state of security about, for example, their prospects of keeping their job or their confidence in their ability to control their long-term economic future, the fact that we see so many people oscillating in and out of that state demonstrates that whatever confidence exists out there is not really foundationally strong for a large group of Canadians.