PURPOSE The aim of the present study was to evaluate the measurement accuracy of endodontic file length on periapical digital radiography after application of noise reduction digital enhancement. MATERIALS AND METHODS Thirty-five human single-rooted permanent teeth with canals measuring 20-24 mm in length were selected. ISO #08 endodontic files were placed in the root canals of the teeth. The...

Determining the “origin of a file” in a file system is often required during digital investigations. While the problem of “origin of a file” appears intractable in isolation, it often becomes simpler if one considers the environmental context, viz., the presence of browser history, cache logs, cookies and so on. Metadata can help bridge this contextual gap. Majority of the current tools, with t...

In this paper, we describe the processing and verification work undertaken to migrate WordStar for MSDOS to HTML4 formatted files. General Terms Preservation strategies and workflows, specialist content types, digital preservation marketplace, theory of digital preservation, case studies and best practice.

In this paper we introduce an ODP for representing digital video resources. The aim is to model digital video files, their components and other associated entities, such as codecs and containers. The proposed design pattern facilitates the creation of relevant domain ontologies that will be deployed in the fields of media archiving and digital preservation of videos and video artworks. This ODP...

Editing surgical videos requires a basic understanding of key technical issues, especially when transforming from analog to digital media. These issues include an understanding of compression-decompression (eg, MPEGs), generation quality loss, video formats, and compression ratios. We introduce basic terminology and concepts related to analog and digital video, emphasizing the process of conver...

Individuals who use peer-to-peer (P2P) file-sharing networks such as Gnutella1 face a social dilemma. They must decide whether to contribute to the common good by sharing files or maximize their personal experience by free riding, downloading files while not contributing any to the network. Individuals gain no personal benefits from uploading files (in fact, it's inconvenient), so it's "rationa...

At Albert Einstein College of Medicine a large part of online lecture materials contain PostScript files. As the collection grows it becomes essential to create a digital library to have easy access to relevant sections of the lecture material that is full-text indexed; to create this index it is necessary to extract all the text from the document files that constitute the originals of the lect...

A digital service, like a web site, may contain a lot of information but we often do not know if it is used, relevant or valuable. Transaction log files generated by digital information services do record the pages (topics or content) viewed by users and this is perhaps the most interesting aspect of the logs. However, analysing these pages poses plenty of problems for researchers, especially w...

BACKGROUND Billing data, such as Medicare claims, are a potential data source for evaluative studies of new digital mammography technologies, such as digital mammography and computer-aided detection (CAD). OBJECTIVE To assess the internal validity of procedure codes on Medicare claims for screening mammography interpreted with either digital mammography or CAD. STUDY DESIGN We assessed agre...