Results 311 to 320 of about 154,069 (338)

[4] Factor XII: Hageman factor

1993
Publisher Summary This chapter discusses the factor XII that is the Hageman factor. The functional activity of factor XII or factor XIIa can be determined via the correction of the abnormal clotting time of human factor XII-deficient plasma by comparing the times obtained through the addition of pooled normal plasma (PNP).
Robert W. Colman, Robin A. Pixley
openaire   +3 more sources

[7] Factor VIII and factor VIIIa

1993
Publisher Summary This chapter focuses on the role of factor VIII and factor VIIIa present in blood. The factor VIIIa apparently alters the active site structure of factor IXa to make it recognize the rate-limiting transition state for factor X activation, because its dominant kinetic effect is to increase the kcat.
Philip J. Fay, David N. Fass, Pete Lollar   +2 more
openaire   +3 more sources

Learning the parts of objects by non-negative matrix factorization

Nature, 1999
Daniel D. Lee, H. S. Seung
semanticscholar   +1 more source

Matrix Factorization Techniques for Recommender Systems

Computer, 2009
Y. Koren, Robert M. Bell, C. Volinsky
semanticscholar   +1 more source

Factorization meets the neighborhood: a multifaceted collaborative filtering model

Knowledge Discovery and Data Mining, 2008
Y. Koren
semanticscholar   +1 more source

The standards factor

ACM SIGCHI Bulletin, 1989
As the newly-appointed SIGCHI Standards Liaison, I hope to continue in the fine tradition established by Jon Meads over the past several years. As I see it, my primary task is to inform SIGCHI members about any standards activities that may affect them as designers and users of interactive software.
openaire   +3 more sources

FACTOR INTERACTION IN NONLINEAR FACTOR ANALYSIS

British Journal of Mathematical and Statistical Psychology, 1967
Factor interaction models are defined as those cases in nonlinear factor analysis in which the specification equation contains products of two or more latent variables or functions of latent variables. A complete algebraic treatment is given for the case of a product of two latent variables, and certain more general cases are briefly outlined.
openaire   +4 more sources

Positive matrix factorization: A non-negative factor model with optimal utilization of error estimates of data values†

, 1994
P. Paatero, U. Tapper
semanticscholar   +1 more source

Factoring factors.

Journal of Educational Psychology, 1947
openaire   +2 more sources

Factoring Effectivess Factors!

Journal of the Operational Research Society, 1990
A R Lock, M J Foster
openaire   +2 more sources