We survey the major techniques for information retrieval In the rst part we provide an overview of the traditional ones full text scanning inversion signature les and clustering In the second part we discuss attempts to include semantic information natural language processing latent semantic indexing and neural networks This work was partially funded by the National Science Foundation under Gra...

Non-functional requirements provide the glue between functional requirements and architectural decisions. Thus, it is important to elicit and specify the nonfunctional requirements precisely. In practice, however, they are mostly neglected. In this paper, we sketch an approach developed in the context of the EMPRESS project, which allows efficiency requirements to be elicited in conjunction wit...

Just a few years after sending Augustine to convert the English in 596, Gregory followed up his missionary efforts with a letter to Bertha, queen of Kent. Gently scolding the Christian queen for failing to convert her husband, Æthelberht, Gregory urged Bertha to take Helena—the fourthcentury Christian empress and mother of Constantine—as a role model and to convert the king as well as the entir...

Craig ANDERSON, Trevor MACKLIN BAE SYSTEMS Advanced Technology Centres, Great Baddow, Chelmsford, Essex CM2 8HN, UK Tel. +44 (0) 1245 242654, Fax +44 (0) 1245 475244, email [email protected] Christine GOMMENGINGER, Meric SROKOSZ Southampton Oceanography Centre, Empress Dock, Southampton, Hants SO14 3ZH, UK Tel. +44 (0) 2380 596414, Fax +44 (0) 2380 596400, email [email protected]....

Early generation ceramic articulations were problematic in terms of ceramic implant fracture and wear. Although the mechanical properties of ceramic material have improved during the last three decades, ceramic component fracture remains an issue. Many authors have reported fractures of the ceramic head, and a few have described ceramic acetabular insert fracture. However, these complications a...

BACKGROUND Squeaking after ceramic-on-ceramic total hip arthroplasty is a relatively uncommon phenomenon. It usually does not require treatment in the absence of pain, mechanical symptoms, and/or relentless squeaking. The purpose of this investigation was to report on four patients who presented with hip pain and squeaking due to fractured ceramic liners after ceramic-on-ceramic total hip arthr...

We made a semiquantitative study of the comparative histology of pseudomembranes from 12 loose cemented ceramic-ceramic and 18 metal-polyethylene total hip replacements. We found no significant difference in cellular reaction between the two groups, but there was a major difference in the origin of the particulate debris. In the metal-polyethylene group, polyethylene of articular origin was pre...