O ponto fulcral da sociedade, independentemente da época ou país, é o tempo de vida. Antigamente, atingir os 60 anos era motivo de celebração especial. Agora, no século XXI, é comum atingir os 65 anos. O paradigma do ciclo de vida tem mudado bruscamente e encontramos numa situaç…
"70" Result
Sort By:
Num contexto histórico, a frequência de gestações trigemelares atingiu o seu auge nos finais do século XX e diminuiu significativamente a partir de então, registando-se atualmente uma frequência de 0,2 por 1000 grávidas. Atualmente, os grandes fatores etiológicos que estão na or…
Fertility rates showed a marked decline in Western Europe from the mid-nineteenth century until the beginning of the twentieth century. The causes of this decline have been studied extensively, but no complete explanation to the observed patterns during this 'First Demographie T…
Studies of modern Palestine and Israel usually highlight the struggle of European powers for control and the formation of Jewish and Palestinian nationalisms. This dissertation does otherwise. With a thesis centered on the physical "making of a Holy Land," this work combines the…
Nazirites are a well-documented phenomenon within the context of the Hebrew Bible. The bulk of research has focused mainly on the role of Samson as a lifelong Nazirite, but little has been done concerning the role of women within the context of the Nazirite Vow. The goal of this…
Marriage and fertility are institutions that comprise a fundamental part of adult life in Africa. Decades ago, universal and early marriage ensured that women spent the majority of their reproductive lives married; and marriage was the main locus of childbearing. However, while …
Background Interpersonal theories of influence postulate that the interactions between two members of a dyad are characterized by bidirectional influence, mutual regulation, and interpersonal assimilation. Empirical support for an interpersonal sphere of influence comes from res…
This dissertation studies how environmental shocks, risk attitudes and time preferences affect key decisions made by households which affect their long term well-being. The first chapter studies how natural disasters affect household migration. I separately examine the impact of…
Among the 22 Arab countries, Egypt ranks amongst the worst for the treatment of women. Additionally, in the last 6 years, fertility surged to a 20-year high of 3.5 births per woman. Poorer women's status and autonomy is often linked to high fertility; however, little is known ab…
Demographers have speculated about differences between birth and pregnancy history questionnaires in terms of data quality; however, differences have never been examined in an experimental study. The present analysis is an individual-level validation of fertility and mortality i…
The research described in this dissertation consists of four major areas: (1) sequence analysis of protamine 2 from Muroid rodents to identify potential zinc-binding domain(s) of protamine 2; (2) structural studies of the protamine 2-zinc complex from Syrian Gold hamster sperm a…
Fertility preference is an important indicator of general attitudes towards childbearing and the possible courses of future fertility trends. Demographic research shows that, as the schooling of women increases, their desire to have a large number of children decreases. However,…
The purpose of this study was to investigate the determinants of fertility in Kuwait. Two facets of fertility were considered: the determinants of the quantity of children, measured by the total number of children ever born to a couple, and the determinants of the quality of chi…
This dissertation makes a probabilistic case for the explanatory and predictive power of the three basic demographic variables—fertility, mortality, and migration—in the study of ethno-nationalist violence. It emancipates ethno-nationalist violence as an explanans distinct from …
Marriage in West Africa is almost universal; polygyny, a form of union where a man is married to more than one wife, is widely practiced in Senegal and Mali. Age at first marriage is very early for girls and divorced or widowed women quickly remarry. The first chapter is a study…
A large decline in both child mortality and fertility rates is one of the most salient features of the demographic transition which has been experienced by today's developed countries in modern times. It has been conjectured that lower child mortality rates might be one of the d…
Estimates of total fecundability and total fetal loss are confounded by an inability to detect pregnancies very early in gestation. A cycle in which no pregnancy is observed results from either no conception or a conception followed by an unrecognized fetal loss. This research e…
The purpose of the thesis is to offer an examination of the economics of crime and corruption. By stressing the importance of Becker's seminal paper, we show how criminal behaviour is no longer considered the result of mental illness, but a decision largely based on a cost-benef…
Chapter 1: Conflict and Child Health: Evidence from the DRC Conflicts between 1996 and 2014: This paper uses four nationally representative household surveys to investigate the dynamics of children's health during the DRC conflicts from 1996 to 2014. I find negative effects on c…