We develop a framework for obtaining Fully Polynomial Time Approximation Schemes (FPTASs) for stochastic univariate dynamic programs with either convex or monotone single-period cost functions. Using our framework, we give the first FPTASs for several NP-hard problems in various fields of research such as knapsack-related problems, logistics, operations management, economics, and mathematical f...

According to models estimated separately for second-, third-, and fourth-birth rates in Norway, an increase took place from the mid-1970s to about 1990, given age and duration since last previous birth. A similar rise in the birth rates was seen in Sweden, except that the upturn at short durations was sharper. It is shown in this study, using Norwegian register data, that the increase partly re...

: We investigated the association between airway hyperresponsiveness (AHR) and obesity in adults referred for confirmation of asthma diagnosis. Data were analyzed for obesity class I (body mass index [BMI] 30-34.9 kg/m2), class II (BMI >/= 35-39.9 kg/m2), and class III (BMI >/= 40 kg/m2). Of 861 subjects, 401 demonstrated AHR; the mean dose of methacholine was 4.16 +/- 2.55 mg/mL. A significant...

Previous work suggests that Auroral Kilometric Radiation (AKR) leaks to low altitudes. To investigate this phenomenon, wideband wave measurements have been conducted simultaneously at South Pole, Antarctica, and the Cluster satellites, during 35 intervals in 2018–2020. Leaked AKR is observed ∼5% of time Pole escaping ∼31% satellites. Both types are composed fine structure, similar structure oft...

0308-521X/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.agsy.2012.08.002 ⇑ Corresponding author. Tel.: +254 131 667 1960. E-mail addresses: [email protected] (P.G. Jo (P.K. Thornton). 1 Tel.: +44 1341 423561. We describe a generalised downscaling and data generation method that takes the outputs of a General Circulation Model and allows the stochastic generation of daily w...

0308-8146/$ see front matter Published by Elsevier doi:10.1016/j.foodchem.2008.08.046 * Corresponding author. Tel.: +510 559 5898; fax: + E-mail address: [email protected] (A.P. A preparative method for decigram-scale polishing of limonin glucoside (1) with regard to removing traces of limonin (2), the main bitter principle in Citrus, is reported. During the method development and up-s...

Abstract Introduction Cognitive behavioral therapy for insomnia (CBTI) improves sleep in pregnancy, but its therapeutic benefits may be diminished pregnancy due to undertreatment of cognitive arousal (i.e., heightened activity, especially at night). Growing evidence indicates that mindfulness-based interventions produce large reductions arousal, which enhance outcomes. The present study was a p...