Discontinuity of the second formant (F2 discontinuity) is often found during back-to-front vowel transitions, and it has been thought due to two possible effects: acoustic coupling with the subglottal tract (subglottal-coupling effect, SCE) and traveling anti-resonance of the interdental space (interdental-space effect, ISE). Although both are possible to appear together, either of the two is c...

What drives humans around the world to converge in certain ways in their naming while diverging dramatically in others? We studied how naming patterns are constrained by investigating whether labeling of human locomotion reflects the biomechanical discontinuity between walking and running gaits. Similarity judgments of a student locomoting on a treadmill at different slopes and speeds revealed ...

PURPOSE Continuity and discontinuity are controversial concepts in social theories on aging. The aim of this article is to explore these concepts using the experiences of older persons living in second couplehood in old age as a case in point. DESIGN AND METHOD Based on a larger qualitative study on second couplehood in old age, following the existential-phenomenological tradition, a theoreti...

BACKGROUND Restrictions in the hours residents can be on duty have resulted in increased sign-outs, that is, transfer of patient care information and responsibility from one physician to a cross-coverage physician, leading to discontinuity in patient care. This sign-out process, which occurs primarily in the inpatient setting, traditionally has been informal, unstructured, and idiosyncratic. Al...

The dynamics and bifurcations of a one-parameter family of interval maps with a single jump discontinuity are studied. The central assumptions are that the maps are injective, increasing to the left of the discontinuity and decreasing to the right. It is shown that such maps have only periodic orbits of periods n; n +1; 2n, and 2n+2 with at least one of these being attracting. The value of n de...

t\BSTRACT A cylindrical cellular discontinuity commonly occurs in lateral geniculate layers that are Innervated by the contralateral eye. Such a disconti ­ nuity has been found In a variety of mammalian species, including carnivores, primates, a rodent and a marsupial. Electrophyslological evidence obtained from some of these species shows ulat the discontinuity corresponds to the blind spot. I...

We examine mathematical properties of the CIEDE2000 color difference formula and illustrate that the CIEDE2000 color difference is not a continuous function of the CIELAB color pairs between which the difference is calculated. Particularly, we illustrate that ambiguities in the computation of mean hue angle and hue angle differences of color pairs contribute to a discontinuity in the formula fo...