Rank two aCM bundles on the del Pezzo threefold with Picard number 3

Let k be an algebraically closed field of characteristic 0. A del Pezzo threefold F with maximal Picard number is isomorphic to P^1xP^1xP^1, where P^1 is the projective line over k. In the present paper we completely classify locally free sheaves of rank 2 with vanishing intermediate cohomology over such an F. Such a classification extends similar results proved by E. Arrondo and L. Costa regarding del Pezzo threefolds with Picard number 1.Comment: 24 pages. Some minor misprints corrected, a new lemma on rational normal curves of degree 7 inserte

Fertility developments in Morocco: progression to third birth

Nowadays, throughout Morocco a dynamic process of modernization is embracing fertility and nuptial behaviors, family planning, contraceptive use, the role and status of women in the family as well as in society, and political orientations, challenging the foundations of the patriarchal system. The progression from second to third birth is a crucial step in fertility change during fertility transition since the reduction especially in third and higher-order births maintains fertility decline. For these reasons, the study aims at analyzing the main determinants of third-birth intensities, applying an event-history analysis to the most recent retrospective Moroccan survey data. The findings show that differences among social groups still persist: higher risks of giving birth to the third child characterize women with a lower educational level and experiencing a rural background. Nevertheless, within the framework of the ongoing process of modernization in the country and geared to promote women’s status, all segments of the population are rapidly changing their fertility behaviors. Third-birth fertility appears to decline monotonically for all educational groups. This suggests that the general drop in Morocco is due to general period effects that affect all strata of the population and various composition effects where increasingly large groups join the socio-economic groups that have the lowest fertility. Moreover, the analysis shows no consistent or clear evidence of sex preference among Moroccan mothers in the progression to the third child. There seems to be a slight aversion towards having two girls; however, this tendency admittedly is not statistically significant.Morocco, fertility

Progression to third birth in Morocco in the context of fertility transition

Progression from second to third birth is a critical reproductive decision in contemporary Morocco. The study thus aims at analyzing the main determinants of third-birth intensities, applying an event-history analysis to the most recent Moroccan survey data. Differences among social groups still persist in the country. Nevertheless, in the background of current modernization and geared to promote women’s status, all segments of the population are rapidly changing their fertility behavior. This applies even to the most laggard group, such as illiterate women. The analysis also shows no significant or clear evidence of sex preference among Moroccan mothers in the progression to the third child.event history analysis, fertility transition, Morocco, progression from second to third birth

Levi Pennington Writing to Parker, February 12, 1947

Levi Pennington writing to his brother Parker about personal life, fishing, and further issues at the college in the wake of Gulley\u27s resignation as president and criticism of George Moore as field secretary. Poem at the end.https://digitalcommons.georgefox.edu/levi_pennington/1134/thumbnail.jp

Levi Pennington Writing to Lura Miles, February 14, 1947

Levi Pennington writing to Lura Miles about his work on relief, the college\u27s purchase of the house Herbert Hoover lived in with his uncle (the Hoover-Minthorn House) with the intention of turning it into a museum, and other news.https://digitalcommons.georgefox.edu/levi_pennington/1135/thumbnail.jp

Circulation control lift generation experiment: Hardware development

A circulation control airfoil and its accompanying hardware were developed to allow the investigation of lift generation that is independent of airfoil angle of attack and relative flow velocity. The test equipment, designed for use in a water tunnel, includes the blown airfoil, the support systems for both flow visualization and airfoil load measurement, and the fluid control system, which utilizes hydraulic technology. The primary design tasks, the selected solutions, and the unforseen problems involved in the development of these individual components of hardware are described

Apports des Transferts des Résidents à L'étranger à la Réduction de la Pauvreté: Cas du Maroc

The author analyses the impacts of foreingner transfers on the poverty reduction , the case of Morocco

Fifty years of spellchecking

A short history of spellchecking from the late 1950s to the present day, describing its development through dictionary lookup, affix stripping, correction, confusion sets, and edit distance to the use of gigantic databases