The periods of the three–form on a Calabi–Yau manifold are found as solutions of the Picard–Fuchs equations; however, the toric varietal method leads to a generalized hy-pergeometric system of equations, first introduced by Gelfand, Kapranov and Zelevinski, which has more solutions than just the periods. This same extended set of equations can be derived from symmetry considerations. Semi-perio...

Earlier papers (Allen and Hayes 1985,1986) described a compact axiomatic theory which provided a formal basis for temporal reasoning. This theory makes a sharp distinction between time points and periods of time. We show here, by considering possible models of the theory, that it can be slightly extended to give a better fit to intuition. In particular, the extended theory is preserved under ch...

Preschool can have positive effects on the development of a healthy lifestyle. The present study analysed to what extent different conditions, structures and behavioural models in preschool and family-children's central social microsystems-can lead to differences in children's health resources. Using a cross-sectional mixed methods approach, contrast analyses of "preschools with systematic phys...

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BACKGROUND The purpose of this study was to integrate relevant goal-setting theory and to identify if trainees' goal orientations have an impact on the assigned goals-performance relationship. METHODS Trainees attended 1 of the 3 goal-training activities (do your best, performance, or learning goals) for knot tying (KT) and camera navigation (CN) during the 3rd-year clerkship rotation. Questi...

Several observational and objective methods are available to assess sedation depth; however, data regarding their accuracy in differentiating deep sedation are limited. In this study we compared 3 sedation tools in children from birth to 18 yr of age and determined their relative value in detecting deep levels of sedation. Bispectral index monitoring (BIS), Modified Maintenance of Wakefulness T...

The purpose of this study was to examine the validity and reliability of a new stair sprinting power (SSP) test and, in addition, develop norms for college-age students. Two hundred twenty-seven college-age volunteers participated in the study (ages: males, [Latin capital letter X with macron above] = 21.6 +/- 2.264 years; females, [Latin capital letter X with macron above] = 22.3 +/- 4.214 yea...

The object of this study is to present our experience in dealing with coarctation of the aorta and to discuss policy in the management of individual patients who have widely varying ages and symptoms, sometimes complicated by additional lesions. Surgical treatment, which is on a national basis, was developed rather hesitantly at first, but is now practised with confidence. Forty-four cases have...

OBJECTIVE To examine how autonomy and pubertal status explain age decreases in maternal involvement in type 1 diabetes management across adolescence, how they relate to metabolic control, and the reasons that guide declines in maternal involvement. METHODS One hundred twenty-seven children ages 10-15 years with type 1 diabetes and their mothers participated. Data included maternal and child r...

Utterances of two adults males were analyzed and synthesized by a fast Fourier Transforms method. Each of the two voices was synthesized in each of the twenty-seven combinations of three levels each of rate, mean FO, and variance of FO (a total of fifty-four "voices" generated from two). The effects of the rate, mean FO, and variance of FO manipulations, the interactive effects of rate and vari...