BACKGROUND The influence of different hospital and surgeon volumes on short-term survival after hepatic resection is not clearly clarified. By taking the known prognostic factors into account, the purpose of this study is to assess the combined effects of hospital and surgeon volume on short-term survival after hepatic resection. METHODS 13,159 patients who underwent hepatic resection between...

OBJECTIVE To estimate time trends in the recourse to radical prostatectomy (RP) and associated short-term outcomes after RP in Italy, as population-based data on RP adoption and outcomes are available mainly from Northern America and Northern Europe. PATIENTS AND METHODS All RPs for prostate cancer performed between 2001 and 2010 were extracted from the Italian national archive of hospital di...

In this paper we describe a new methodology for detecting data quality problems in high volume transaction streams called change detection using cubes of models or CDCM. We also describe how this system is deployed at Visa and two case studies that occurred during its first year of operation. ∗This work was supported in part by the Visa International Data Interoperability Program and the U.S. A...

This paper proposes a Multi-Stream Cipher Stegnographic technique for high volume and secure data hiding in digital video and images. The proposed technique enables high rate of data embedding along with provisioning of confidentiality, integrity and authenticity security services. Embedding is carried out in spatial domain utilizing multiple stream ciphers for embedding signature information. ...