essentially non-negative matrix
1.Resolution of HPLC-DAD data of chiral drugs with overlapping peaks by non-negative matrix factorization
2.Study on Decision-making Model for Portfolio Investment under Non-negative Definite Covariance Matrix
3.Stagnation: A period of essentially non-existent economic growth, often accompanied by high unemployment.
4.Of a logarithm, the non-negative fractional part of the represent ation of a logarithm.
5.This paper applies generalized multipler method to translate convex quadratic programs with equal constraints and non-negative constraints into simple convex quadratic programs with non-negative constraints.The new algorithm is gotten by solving the simple quadratic program.It avoids the computation of inverse matrix and exploits sparsity structure in the matrix of the quadratic form.The results of numerical experiments show the effectiveness of the algorithm on large scale problems.
6.This note proves that if n≥3, then (a) is non-negative definite iff W~()R~+;
7.Every one of the four forms amounts to the encoding of a non-negative whole number.
8.The non-negative solutions to a degenerate reaction diffusion system with initial boundary value conditions are studied.
9.Bt is essentially non-toxic to humans, pets and wildlife(inhalation or contact with eyes or open wounds should be avoided).

