Children’s early mathematical experiences play an enormous role in the development of their understanding of mathematics, and serve as a foundation for their cognitive development. In this descriptive study, we observed the naturally occurring mathematical activities engaged in by thirty-nine 3-year-olds, equally divided by race/ethnicity and social class. We observed each child for 18 hours ov...

Over the past few years, firms in the travel and entertainment industries have begun using novel sales strategies for revenue management. In this chapter, we study a selling strategy called opaque selling, in which firms guarantee one of several fully specified products, but hide the identity of the product that the consumer will actually obtain until after the purchase is completed. Several fi...

(thirty women, nine men) have been reviewed. Using internal fixation and external splints the position of the shoulder was maintained in 55 degrees of abduction, 25 degrees of horizontal flexion and enough internal rotation to allow the patient to reach the mouth. The mean period of immobiisation in a thoracobrachial splint was nine weeks, and 90 per cent of the shoulders had solid bony fusion ...

OBJECTIVE To develop and pilot an audit system usable by medical officers in peripheral hospitals for deaths of children under 5 years to: (i) identify and classify all causes of deaths; and (ii) to identify substandard care and missed opportunities for intervention and to classify these as modifiable factors. SETTING The four public sector hospitals in Mafikeng health region in North West pr...

This article examines the determinants of the location of large firms’ headquarters across a rich sample of European urban areas, focusing on the availability of nonstop intercontinental flights. We also account for the influence of other aspects: the proximity to large markets and specialized providers, congestion and tax costs, the availability of skilled labor, and the role of the urban area...

Purpose: To review periocular dermoid cysts to determine distribution of demographic factors, and tumor location Methods: In this retrospective, observational case series in a tertiary-care hospital, we reviewed all cases of histopathologically verified periocular dermoid cysts at our institution between 2003 and 2011. The study endpoints included: age, gender, and tumor location. Results: Two ...

IN recent years, in a number of centres in different countries, depriving the patient of his night's sleep has been tried as a treatment for depression. Table I shows the findings from ten centres. Pflug and Tolle (1971) sleep-deprived fifty-seven subjects. The twenty-three healthy subjects and the eleven patients with neurotic depression showed little change in mood, as measured by rating scal...