Meteor-scatter communication was first described in the pages of QST in 1953 as a means for communicating on dead 15 and 20 m bands. Hams soon realized that even more impressive results could be obtained at 6 and 2 m, where background noise levels are much lower and useful low-elevation gain is obtainable with relatively modest antennas. Early meteor-scatter (MS) contacts used CW and relied on ...

Complement 9 deficiency is the most common complement deficiency in Japan, but it is rare in western countries. Because of Korea’s geographical proximity to Japan, C9 deficiency in Korea has also been assumed to be common although this has never before been proven. We investigated complement deficiency in the serum samples of 6,159 Korean hospital outpatients. The deficiency was screened by a s...

Protein tyrosine phosphorylation is a key regulatory modification in metazoans, and the corresponding kinase enzymes have diversified dramatically. This diversification is correlated with a genome-wide reduction in protein tyrosine content, and it was recently suggested that this reduction was driven by selection to avoid promiscuous phosphorylation that might be deleterious. We tested three pr...

The effects of stress (threat of shock) on GSR nonspecific responses were evaluated for Ss who differed in transitory anxiety as measured by the Affect Adjective Check List (AACL). 52 Ss were equally divided among 4 groups: Hi AACL Stress, Lo AACL Stress, Hi AACL Nonstress, and Lo AACL Nonstress. First, all Ss rested; then both Stress groups were threatened with shock, while both Nonstress grou...

Much has been learned about calculation, commodification and marketization from the social studies of markets and finance. But what of capitalization? What is distinctive about this mode of valuation and the reality it impels? What does it mean to live under the ‘asset condition’? In Capitalization: A Cultural Guide, Fabian Muniesa and his colleagues at the Centre de Sociologie de l’Innovation ...

Classification permeates us: our being and our world. This paper seeks to extend the information systems literature on classification by suggesting classification as a quest, involving man, in a process comprised of both finding and producing truth. Drawing on Martin Heidegger’s etymological enquiry, classification is reinterpreted as a dynamic movement towards order. The essence of technology ...

abstract: measles remains one of the leading causes of childhood morbidity and mortality in developing countries and is still a major public health concern in developed countries. although live attenuated vaccine is used throughout the world, out breaks of disease still occur in many countries including iran. understanding measles outbreaks that occur after the initiation of measles elimination...