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Much media and public policy attention has been attended to a presumed ?Digital Divide.? This refers to those who have access to information tools and the capability of using information and those who presumably do not. This paper looks at the forces and trends in the information technologies themselves and the economics of information. It concludes that the divide at its outset was much the same as many gaps that have and continue to persist in a capitalistic society. It further concludes that costs are falling so steeply and ease of use improving so rapidly that market forces already seem to me eliminating the greatest portion of the divide. Policy-makers may have less of an issue to deal with in a few years than seemed likely just a few years ago.
This dataset contains information extracted from the UNT Libraries' Coda Digital Repository. It contains information related to number of files, size, and ingest date of digital objects added to that system. It can be used for analysis and investigation of the growth and makeup of digital repositories.
Results of scientific research are nowadays as a rule published digitally. It is almost inconceivable that any scientist would not present the results of his or her work in digital form, even if it is in parallel to a physical copy delivered by a publisher. This is certainly the case for Science, Technology and Medicine, the research fields that produce over 80% of all scientific publications. Traditionally academic libraries have contributed to the keeping of the output of science through time. For deposit libraries - mostly the national libraries - the maintenance of the Record of Science is even a key task. The maintenance of collections by libraries is under pressure as more publications turn digitally. One reason is the change of policy of publishers who preferably do no longer sell but rather license their publications, offering ...
This book is a collection of essays on sustaining digital libraries. The essays report on early findings from pioneers who have worked to establish digital libraries, not merely as experimental projects, but as ongoing services and collections intended to be sustained over time in ways consistent with the long-held practices of print-based libraries. Particularly during this period of extreme technological transition, it is imperative that programs across the nation and indeed the world - actively share their innovations, experiences, and techniques in order to begin cultivating new standard practices. The collective sentiment of the field is that we must begin to transition from a punctuated, project-based mode of advancing innovative information services to an ongoing programmatic mode of sustaining digital libraries for the long haul.
The importance of writing and reading in Humanist Studies from manuscript to digital culture.
Digital radiography detectors—based on different technological solutions—are currently available for clinical applications and widespread in clinical practice. Computed radiography (CR) and digital radiology systems have been available for clinical applications and the trend over the last few years has become digital. Radiology departments have been changing from traditional screen–film technology to digital technology. This chapter is intended to give the reader a practical understanding about the key aspects concerning digital systems, related to the performance of different technologies, image quality, and dose and patient safety/protection. The discussion around an optimization framework for digital systems is provided.
Once in a digital form, a radiographic image may be processed in several ways in order to turn the visualization an act of improved diagnostic value. Practitioners should be aware that, depending on each clinical context, digital image processing techniques are available to help to unveil visual information that is, in fact, carried by the bare digital radiograph and may be otherwise neglected. The range of visual enhancement procedures includes simple techniques that deal with the usual brightness and contrast manipulation up to much more elaborate multi-scale processing that provides customized control over the emphasis given to the relevant finer anatomical details. This chapter is intended to give the reader a practical understanding of image enhancement techniques that might be helpful to improve the visual quality of the digital ...
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