A Case Study on Three-Dimensional Formative Activity  Art Therapy for Children with Visual Impairment  in Institutional Settings about Peer Relations

PurposeThis paper aims to introduce new criteria for evaluating authenticity in digital preservation, particularly in cases related to unreleased software projects and preservation work that occurs in non-institutional settings.Design/methodology/approachInterpretive visual and formal analysis of image files is performed on three overlapping preservation efforts to understand the ways that self-appointed preservationists reframe content in varied settings. The unreleased mid-1990s console game Sonic X-Treme is used as a case study because assets from the development process have been widely preserved among former developers and enthusiasts alike.FindingsThe findings indicate that non-professional preservationists transcode original production files into a variety of formats, ranging from lossy compressed images to contemporary three-dimensional (3D) modeling files. Materials are presented in settings that range from colorful webpages mimicking the appearance of commercial software to browsable file systems. These results show that non-institutional preservation practices embody notions of authenticity that diverge significantly from those of professional archivists.Research limitations/implicationsThe study is limited by its focus on a single case study, but helps to facilitate ongoing research concerning preservation of unreleased projects insofar as it surveys the current status of existing projects.Originality/valueExisting studies within preservation literature have established the need for increased attention paid to unfinished digital works. This study introduces new data and interpretative findings that outline such preservation efforts as they already occur in non-institutional settings.

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Construction of plastic contact deformation maps on ceramics: a case study on aluminum nitride

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100165641 ◽

1996 ◽

Vol 54 ◽

pp. 636-637

Author(s):

D. L. Callahan

Keyword(s):

Plastic Deformation ◽

Aluminum Nitride ◽

Mechanical Response ◽

Three Dimensional ◽

Bright Field Image ◽

Perfectly Plastic ◽

Contrast Analysis ◽

Deformation Patterns

Modern polishing, precision machining and microindentation techniques allow the processing and mechanical characterization of ceramics at nanometric scales and within entirely plastic deformation regimes. The mechanical response of most ceramics to such highly constrained contact is not predictable from macroscopic properties and the microstructural deformation patterns have proven difficult to characterize by the application of any individual technique. In this study, TEM techniques of contrast analysis and CBED are combined with stereographic analysis to construct a three-dimensional microstructure deformation map of the surface of a perfectly plastic microindentation on macroscopically brittle aluminum nitride.The bright field image in Figure 1 shows a lg Vickers microindentation contained within a single AlN grain far from any boundaries. High densities of dislocations are evident, particularly near facet edges but are not individually resolvable. The prominent bend contours also indicate the severity of plastic deformation. Figure 2 is a selected area diffraction pattern covering the entire indentation area.

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