Objective. We examined how parents’ expectations about their infants’ crawling ability and crawling attempts in a locomotor task affect parenting choices about ensuring infants’ safety and providing appropriate challenges. Design. Mothers and fathers of 34 11-month-old infants adjusted a ramp to the steepest slopes they thought their infants could safely crawl down, would attempt to crawl down,...

We define the slope of a colored link in an integral homology sphere, associated to admissible characters on group. Away from certain singular locus, slope is rational function which can be regarded as multivariate gen

In view of the problem portal support a slope, this paper summarizes four arch barrings, their main structure characteristics and disadvantages are analyzed, then new design in-situ reinforced concrete barring is developed for slope mouths, cost materials wage pitmen determined by comparing several structures used to mouths inclined shafts.

We show that there exists an infinite family of pairwise non-isotopic Legendrian knots in the standard contact 3-sphere whose Stein traces are equivalent. This is first example such phenomenon. Different constructions developed article, including a annulus twist, explicit Weinstein handlebody equivalences, and discussion on dualizable patterns setting. These can be used to systematically constr...