3 resultados para selective focus
em Deakin Research Online - Australia
Resumo:
Design representation is a crucial part of all design activity. Representations provide a vehicle through which design ideas and decisions are explored, communicated and recorded. Since representation is so fundamental to design, it follows that a deep understanding of the nature and use of representation has the potential to improve current design practice. While there is recognition in the IS literature of the importance of representation, previous IS research has focused almost entirely on the functional aspects of representation, in particular modelling to support various methodologies or particular aspects of design such as database, object-oriented or process modelling. Since the development of an information system is a socio-technical process, this paper argues that we need to understand how representations can facilitate both the specification of the artefact, and the social aspects of design. This paper explores the use of design representation by real-world practitioners. It identifies two hitherto neglected social purposes of representation employed by designers when interacting with clients or users: selective focus, and promotion. The paper concludes by noting that as IS faces increasingly complex design challenges it is timely to examine our understanding of all aspects of design representation including its role in facilitating the social aspects of design.
Resumo:
This paper outlines a practice as research investigation into the construction and representation of the figure and the ground in photography through overlapping multiple temporal and spatial renderings of the same subject within single photographic images.
This included a critical investigation of the representation of time, perspective, and location in historical and contemporary photography with particular attention to the synthesis, imitation, and distinction of characteristics of human vision in this medium especially where they are indicative of consciousness and attention.
This investigation informed a re-evaluation of the premises of the genre of the photographic portrait and it’s setting, especially within the unstructured environment of the Central Victorian ironbark forests and goldfields. Analogue and digital photographic experiments were conducted in superimposed shifts in camera position and their convergence on significant points of focus through repeated exposures across different time scales. The images correspond to a stage in human stereo perception before fusion, to represent the attention of the viewer, where, in these images, the ‘portrait’ is located.
The findings were applied to the large format camera production of high-definition images that extended the range and effectiveness of selected pictorial structures such as selective focus, relative scale, superimposition, multiple exposures and interference patterns.
The outcome was an exhibition at Smrynios Gallery in Melbourne in April 2004. This presentation includes a discussion of relevant work by Australian practitioners Daniel Crooks and David Stephenson.
Resumo:
Meso-porous metal materials have enhanced surface energies offering unique surface properties with potential applications in chemical catalysis, molecular sensing and selective separation. In this paper, commercial 20 nm diameter metal nano-particles, including silver and copper were blended with 7 nm silica nano-particles by shear mixing. The resulted powders were cold-sintered to form dense, hybrid thin films. The sacrificial silica template was then removed by selective etching in 12 wt% hydrofluoric acid solutions for 15 min to reveal a purely metallic meso-porous thin film material. The impact of the initial silica nano-particle diameter (7–20 nm) as well as the sintering pressure (5–20 ton·m−2) and etching conditions on the morphology and properties of the final nano-porous thin films were investigated by porometry, pyknometery, gas and liquid permeation and electron microscopy. Furthermore, the morphology of the pores and particle aggregation during shear mixing were assessed through cross-sectioning by focus ion beam milling. It is demonstrated that meso-pores ranging between 50 and 320 nm in average diameter and porosities up to 47% can be successfully formed for the range of materials tested.
