K. Jech: Downfall of the peasant estate 1945–1990

[Downfall in infancy].

Editorial changes at JECH.

We are delighted to take up the position of Co-Editors of the Journal of Epidemiology and Community Health. JECH is the leading international journal for original, sociallyrelevant, methodologically sound epidemiological analyses of importantpublic health problems, andwe are proud to continue the rich tradition that previous editors have started, including John Ashton, Carlos Alvarez-Dardet and...

The Di erences Between Kurepa Trees And Jech

By an !1{tree we mean a tree of power !1 and height !1. An !1{tree is called a Kurepa tree if all its levels are countable and it has more than !1 branches. An !1{tree is called a Jech{Kunen tree if it has branches for some strictly between !1 and 2 !1 . In x1, we construct a model of CH plus 21 > !2, in which there exists a Kurepa tree with no Jech{Kunen subtrees and there exists a Jech{Kunen ...

the effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...

Et tu, XML? The downfall of the relational empire (abstract)

Three decades past, the relational empire conquered the hierarchical hegemony. Today, an upstart challenges the relational empire’s dominance, threatening the return of hierarchy. XML is Lisp’s bastard nephew, with uglier syntax and no semantics. Yet XML is poised to enable the creation of a web of data that dwarfs anything since the Library at Alexandria. This talk examines the design of XQuer...