Cyclic division algebra (CDA) has recently become a major technique to construct nonvanishing determinant (NVD) space-time block codes. The CDA based construction method usually consists of two steps. The first step is to construct a degree-n cyclic extension over a base field and the second step is to find a non-norm algebraic integer in the base field. In this paper, we first propose a simple...

BACKGROUND Lack of access to insulin and poor health outcomes are issues for both low and high income countries. This has been accompanied by a shift from relatively inexpensive human insulin to its more expensive analogs, marketed by three to four main global players. Nonetheless, patent-based market exclusivities are beginning to expire there for the first generation insulin analogs. This pap...

In the recent landmark paper of Zheng and Tse it is shown that there exists a fundamental tradeoff between diversity gain and multiplexing gain, referred to as the DiversityMultiplexing gain(D-MG) tradeoff. The present paper presents the first explicit construction of space-time (ST) codes for arbitrary number of transmit antennas that achieve the D-MG tradeoff. It is shown here that ST codes w...

Subdiffusion or single-file diffusion occurs in crowded media or in the presence of tight spatial confinement. In the particular case of diffusion in a narrow channel, the motion of an assembly of small particles can be so tightly restricted that they arrange themselves into a single file (hence the term single-file diffusion). In such a situation the longitudinal motion of each particle is hin...

This article utilizes the Part A Medicare provider analysis and review (MEDPAR) file for fiscal year (FY) 1987. The discharge records were organized into a patient-based record that included alcohol, drug, and mental (ADM) disorder diagnoses as well as measures of resource use. The authors find that there are substantially higher costs of health care incurred by the drug disorder diagnosed popu...