When parallel applications are run in large-scale distributed environments, such as grids, peer-to-peer (P2P) systems, and clouds, the set of resources used can change dynamically as machines crash, reservations end, and new resources become available. It is vital for applications to respond to these changes. Therefore, it is necessary to keep track of the available resources—a problem which is...

We use conjoint choice questions to investigate people’s preferences for income and reductions in mortality risks delivered by contaminated site remediation policies. Our survey is self-administered using the computer by residents of four cities in Italy with severely contaminated sites. We estimate the Value of a Statistical Life to be about €5-6 million for an immediate risk reduction. If the...

A majority of the air pollution currently regulated under U.S. emissions trading programs is nonuniformly mixed, meaning that health and environmental damages depend on the location and dispersion characteristics of the sources. Most emissions trading programs ignore this fact. Emissions are penalized at a single permit price, regardless of the location of the source. In theory, di¤erentiated p...

1930 yılından günümüze uzanan aerojeller; Guinness rekorlar kitabına giren en hafif ve katı malzeme olarak seçilmiştir. Yüksek ısıl absorbsiyon özelliği, çok iyi yalıtkanlık kabiliyeti, mezo gözenek yapısı mukavemetinin yüzey alanının yüksek olması gibi üstünlüklerinin birçok malzemeye alternatif kullanım avantajı sektörde olanağı sunmaktadır. Bu çalışmada, sol-jel tekniği kullanılarak saflıkta...

Összefoglaló. Egy 47 éves nőbeteg tranziens ST-eleváció miatt került felvételre és coronarographiára. A ST-elevációnak véleményezett elektrokardiogram poroszsisak-jelnek felelt meg, amelyet egy EKG-műtermék okozott. Habár a számtalan, nem coronariaeredetű oka ismert, műtermék okozta poroszsisak-jelet még ismertettek. Fontos felismerése felesleges diagnosztikai terápiás beavatkozások elkerülése ...