In this paper, we will use outer inverses and the Brown-McCoy shift to characterize the existence of the inverse and group inverse of a 2 × 2 block matrix.

David McCoy and colleagues critique the dominance of "lives saved" models of assessing the impact of health programs, using The Global Fund as a case study. Please see later in the article for the Editors' Summary.

We study the critical and off-critical ~Griffiths-McCoy! regions of the random transverse-field Ising spin chain by analytical and numerical methods and by phenomenological scaling considerations. Here we extend previous investigations to surface quantities and to the ferromagnetic phase. The surface magnetization of the model is shown to be related to the surviving probability of an adsorbing ...

Baby hamster kidney (BHK), McCoy, and L cell lines were found to be suitable for isolation of MM virus from infected mouse brain tissue. The virus was recovered in high titer in the first passage in BHK and McCoy cells, with concomitant cytopathic effect (CPE). In L cells, virus yield was lower than in the other two cell lines and CPE was incomplete. Adaptation of the virus to BHK and McCoy cel...