The importance of children for the elderly and changes in reproductive behavior (a study of three rural communities in Mexico)

"This study analyzes the importance of children in the care of elderly populations in rural communities [in Mexico].... In particular, the perception of elders about the value of their children is analyzed, especially the role children play in their economic contribution to the household or their instrumental value to it at different stages of their lives.... With respect [to] the condition in which children support their parents in their old age the economic assistance given was studied too. Finally, the preference regarding family size of those 60 years or older [is] given, as well as the view points of women on the need to control fertility and reduce family size. Three different types of cost are studied: the economic cost of supporting and caring for children, the emotional cost of their upbringing and the health cost of multiple pregnancies and births." (SUMMARY IN ENG)     

发明获得法律保护的条件

<正> (一)能够取得专利的发明概念发明是专利法的客体。"发明"(Invention,Erfindung)概念的定义对任何一个法律体系来说都具有重要的实践意义,因为专利法效力的范围是由这个定义的内容决定的。同时,发明的定义引起颇大的复杂性,因为它表现了智力活动的一个侧面。由于这些原因,发明的概念曾是法律著作中反复探讨的对象。И.Я.赫伊费茨给发明下的定义是:技术课题的创造性解决方案。许多其他苏联作者也持这个观点。外国作者在给发