In this paper we test different conjugate gradient (CG) methods for solving largescale unconstrained optimization problems. The methods are divided in two groups: the first group includes five basic ...

Researchers at Thermal Gradient have achieved a major breakthrough in DNA testing. Polymerase Chain Reaction (PCR) is a step that is required in virtually every molecular (DNA/RNA) diagnostic test and ...

There are three main ways to check the correctness of derivative specifications. If the specification of the first derivatives is correct, the elements of the test vector and test matrix should be ...

With the ombre hair trend on its way out, a new option has taken its place: the gradient manicure. I spotted a charcoal-tipped version on Sweet Talk on the Spot and set to work recreating it. All told ...