C1nr10629e 3631..3634

An introduction to queueing theory and matrix-analytic methods

HEMOSTASIS, THROMBOSIS, AND VASCULAR BIOLOGY A shortened activated partial thromboplastin time is associated with the risk of venous thromboembolism

Hypercoagulability due to high coagulation factors XI, VIII, IX, II, and fibrinogen is recognized as a risk factor of venous thromboembolism (VTE). These factors are cumulatively explored by the activated partial thromboplastin time (APTT). To test the hypothesis that a short APTT increases the risk of VTE, a case-control study was carried out in 605 patients referred for thrombophilia testing ...

Phosphorylation modulates the activity of glycine N-methyltransferase, a folate binding protein. In vitro phosphorylation is inhibited by the natural folate ligand.

Glycine N-methyltransferase (EC 2.1.1.20) was recently identified as a major folate binding protein of rat liver cytosol (Wagner, C., and Cook, R. J. (1984) Proc. Natl. Acad. Sci. U.S.A. 81, 3631-3634). Activity of the enzyme is inhibited when the natural folate ligand, 5-methyltetrahydropteroylpentaglutamate (5-CH3-H4PteGlu5), is bound. It has been suggested that glycine N-methyltransferase pl...

A Series of Regular Hadamard Matrices

Let p and 2p − 1 be prime powers and p ≡ 3 (mod 4). Then there exists a symmetric design with parameters (4p, 2p − p, p − p). Thus there exists a regular Hadamard matrix of order 4p. AMS classification numbers: 05B20, 05B05

Evaluating and Enriching Online Knowledge Exchange: A Socio-epistemological Perspective

A.A. Lazakidou (ed.), Virtual Communities, Social Networks and Collaboration, Annals of Information Systems 15, DOI 10.1007/978-1-4614-3634-8_3, © Springer Science+Business Media New York 2012 Abstract We apply approaches from social epistemology and social psychology to the study of knowledge in online communities. We fi rst provide a descriptive analysis of knowledge behaviours informed by so...