This paper describes a branch-and-cut procedure for an extension of the bounded colouring problem, generally known as curriculum-based university course timetabling. In particular, we focus on Udine Course Timetabling [di Gaspero and Schaerf, J. Math. Model. Algorithms 5:1], which has been used in Track 3 of the 2007 International Timetabling Competition. First, we present an alternative intege...

OBJECTIVES To evaluate the factors associated with discontinuation of breast-feeding before 12 months in order to make suggestions for achieving long-term breast-feeding. DESIGN A descriptive cross-sectional study. SETTING Gazi University Medical School, Ankara, Turkey. SUBJECTS Mothers of 1230 children who discontinued breast-feeding at least 15 d before the last visit were asked to fill...

Taking advantage of strong 4-photon absorption of l e v light in GaN samples, we demonstrated the fmt ever 4-photon microscopy using GaN material system. Combining with 3-photon fluorescence and second and third harmonic generation microscopies, we studied a lateral overgrown GaN sample with high 3D resolution. Complete information regarding the distribution of growth quality, defect state, and...

which is closely related to an integral given by Sonine.5 1 After P. A. M. Dirac, Proc. Roy. Soc. Lond., 113 (1927), 621. 2 Oeuvres, t. 1, p. 234. 3I. Fredholm, Acta. Math., 23 (1900), 1; Compt. Rend., 129 (1899), 32; Rend. Palermo, 25 (1908), 346. J. Le Roux, Compt. Rend., 137 (1903), 1230. N. Zeilon, Arkiv. Mat. Astr. och Fysik., 6 (1911), 9 (1914); Nov. Act. Soc. Sc. Upsaliensis, 4, (1919) 5...

1. DuBois AB, Brody AW, Lewis DH, Burgess DF. Oscillation mechanics of lungs and chest in man. J Appl Physiol, 1956, 8, 587-594. 2. Michaelson ED, Grassman ED, Peters WR. Pulmonary mechanics by spectral analysis of forced random noise. J Clin Invest, 1975, 56, 1210-1230. 3. Peslin, Fredberg JJ. Oscillation mechanics of the respiratory system. In: Handbook of Physiology, Section 3, Vol. III. Mec...

Background: Hair dye poisoning, with main toxic component paraphenylene diamine, is a medical emergency. It is on increasing trend in developing countries due to wide availability and low cost of hair dyes. It carries a high mortality and does not have any specific antidote. Case Report:  Twenty three years old patient presented with breathelessness along with difficulty in speaking for...

It is widely known that shifts of cohort fertility schedule can produce misleading trends in period TFR. This note shows that such a “tempo bias” can occur in age-specific mortality as well: if the age distribution of cohort deaths shifts toward older (younger) ages, the period age-specific death rate is biased downward (upward). 1 Laboratory of Populations, Rockefeller University, 1230 York Av...