A preservation environment manages communication from the past while communicating with the future. Information generated in the past is sent into the future by the current preservation environment. The proof that the preservation environment preserves authenticity and integrity while performing the communication constitutes a theory of digital preservation. We examine the representation inform...

The Commission on Preservation and Access, a program of the Council on Library and Information Resources, supports the efforts of libraries and archives to save endangered portions of their paper-based collections and to meet the new preservation challenges of the digital environment. Working with institutions around the world, CLIR disseminates knowledge of best preservation practices and prom...

Establishing metadata requirements is a key challenge for any attempt to implement a digital preservation repository. The repository’s capacity to provide costeffective, trustworthy services largely derives from the metadata it uses. This paper describes the metadata posited to support services the Chronopolis preservation system will offer at the conclusion of its first year of development. Ch...

Background and Aim: Medical grade calcium sulfate hemihydrate (MGCSH) is used as a bone graft material for socket preservation. This study aimed to evaluate the changes in bone width and height after tooth extraction and socket preservation with MGCSH using cone-beam computed tomography (CBCT). Materials and Methods: This study evaluated 17 systemically healthy patients over a 1-year period. Th...

Assessing and improving an organization’s digital preservation activities can rather troublesome and subjective. Different organizations have different levels of detail regarding the planning and operation of their digital preservation activities. Previous work on the assessment of digital preservation activities revealed that the assessment based on checklists and interviews wield subjective, ...

Chemotherapy has the potential to deplete and destroy a woman's reproductive potential. Although many oncologists are referring women for fertility preservation before chemotherapy, in many cases there is limited time for fertility preservation. This review provides an overview of the impact of cancer and chemotherapy on the ovarian reserve, a summary of methods of fertility preservation prior ...

Effective digital preservation depends on a set of preservation services that work together to ensure that digital objects can be preserved for the long-term. These services need digital preservation metadata, in particular, descriptions of the properties that digital objects may have and descriptions of the requirements that guide digital preservation services. This paper analyzes how these se...

Digital objects have become the dominant way that we create, shape, and exchange information. They form a central part of our economy, and are becoming increasingly important for a longer period of time. The evergrowing heterogeneity and complexity of digital object formats together with rapid technological changes turn the preservation of digital information into a pressing challenge. The chal...

the objective of this research is to tackle the emerging problem of jointly determining theoptimal retail price, the replenishment cycle, and the cost of preservation technology investment from an integrated perspective among the supplier and the manufacturer. this paper deals an integrated single-manufacturer single-retailer supply chain model for deteriorating items under revenue sharing on p...