The DRAMA project 1 has been initiated to support the take-up of large scale parallel simulation in industry by dealing with the main problem which restricts the use of message passing simulation codes | the inability to perform dynamic load balancing. The central product of the project is a library comprising a variety of tools for dynamic repartitioning of unstructured Finite Element (FE) app...

We determine necessary conditions on the structure of symbol error rate (SER) optimal quantizers for limited feedback beamforming in wireless networks with one transmitter-receiver pair and R parallel amplify-and-forward relays. We call a quantizer codebook “small” if its cardinality is less than R, and “large” otherwise. A “d-codebook” depends on the power constraints and can be optimized acco...

Practitioners have long noticed that quasi-Monte Carlo methods work very well on functions that are nearly superpositions of low dimensional functions. The reason is that the low dimensional coordinate projections of QMC rules can have very good equidistribution properties at sample sizes for which the original rule itself cannot have good equidistribution. This paper explores a converse propos...

The central product of the DRAMA (Dynamic ReAllocation of Meshes for parallel Finite Element Applications) project is a library comprising a variety of tools for dynamic re-partitioning of unstructured Finite Element (FE) applications. The input to the DRAMA library is the computational mesh, and corresponding costs, partitioned into sub-domains. The core library functions then perform a parall...

OBJECTIVE To develop guidelines for performing an initial skeletal survey (SS) for children <24 months of age presenting with bruising in the hospital setting, combining available evidence with expert opinion. METHODS Applying the Rand/UCLA Appropriateness Method, a multispecialty panel of 10 experts relied on evidence from the literature and their own clinical expertise in rating the appropr...

BACKGROUND The diagnosis of thyroid carcinoma during the course of lobectomy for a dominant nodule occasionally cannot be rendered on the basis of frozen section. Once the diagnosis of carcinoma is made, the question of completion thyroidectomy arises. PATIENTS AND METHODS During a period of 3 years, 28 patients diagnosed with well-differentiated thyroid cancer (WDTC), and operated upon with ...