We discuss CM abelian varieties in characteristic zero, and in positive characteristic. An abelian variety over a finite field is a CM abelian variety, as Tate proved. Can it be CM-lifted to characteristic zero? Does there exist an abelian variety of dimension g > 3 not isogenous with the Jacobian of an algebraic curve? Can we construct algebraic curves, say over C, where the Jacobian is a

We will introduce the notion of a variety (or more generally a motive) of CM-type which gen-eralises the well known notion of abelian variety of CM-type. Just as in that particular case it will turn out that the cohomology of the variety is determined by purely combinatorial data; the type of the variety. As applications we will show that the ℓ-adic representations are given by algebraic Hecke ...

In a previous paper 6], we noted that the CM-2's natural data layout is not conducive to exchanging data with other machines. In order for CM-2 data to be understandable to a remote machine, a bitwise transpose must be performed on the data. Each bit in an n bit value must be transmitted to a diierent processor, requiring n send operations through the CM-2's global router network. The time requ...

OBJECTIVE This study examines the relationship between evidence-based appropriateness criteria for neurologic imaging procedures and Medicare payment determinations. The primary research question is whether Medicare is more likely to pay for imaging procedures as the level of appropriateness increases. DATA SOURCES The American College of Radiology Appropriateness Criteria (ACRAC) for neurolo...

Hospitals attached to the Spanish Ministry of Health are currently using the International Classification of Diseases 9 Clinical Modification (ICD9-CM) to classify health discharge records. Nowadays, this work is manually done by experts. This paper tackles the automatic classification of real Discharge Records in Spanish following the ICD9-CM standard. The challenge is that the Discharge Recor...

BACKGROUND/PURPOSE Identifying trends in the prevalence and incidence of Parkinson's disease (PD) may yield information that supports public health goals. Our aim was to evaluate time-trend changes in the prevalence and incidence of PD in Taiwan between 2004 and 2011. METHODS This retrospective, nationwide, longitudinal study used the Taiwan National Health Insurance Research Database to iden...