Acquisition of domain ontology from relational schemes based on reverse engineering

Acquisition of domain ontology from database has been of catholic concern. This paper, taking relational schemes as example, analyzes how to identify the information about the structure of relational schemes in legacy systems. Then, it presents twelve extraction rules, which facilitate the obtaining of terms and relations from the relational schemes. Finally, it uses the EER diagram to further obtain semantic information from relational schemes for refining ontology model. The development method of domain ontology based on reverse engineering is a supplement to forward engineering. The union of the two development methods is certainly beneficial for the designers of domain ontology. © 2009 IEEE.

Souvenirs of the senses - Handdunes

This series of works "Handunes" were in response to a curatorial premise that my colleagues, Patrick West and Valerie Jeremijenko produced for a invited workshop and in tensive fabrication. The premise was to re-think the notion of the souvenir and how things are mad in a place by starting with a sensation of place and building an object (reverse engineering it) from that sensation or experience. this works against the notion of an miniature icon. these objects and documented processes were exhibited at the end of the one week intensive workshop.

Material writing: Towards hybrid-making

Writing operates in an expanding field of intersections between symbol, inflection and further meaning. The materiality of writing, its embodied action, situated context and myriad substantive expressions, requires an interdisciplinary approach best advanced by collaborative teams and fuelled by collective concerns. At a recent design conference, Doha 2013: Hybrid Making, our team of creative arts researchers (Jondi Keane, Patrick West and Valerie Jeremijenko) conducted a workshop based on the idea of reverse engineering the notion of a souvenir, by starting with the sensation rather than the iconic image. The approaches explored by the group focused on the ways in which a sensation, emotion and/or idea attach to an object and how an object offers itself as an attractor for memory and indicate that when experience, sensation and place are emphasized, the materiality of writing comes to the fore. We assert that material writing allows or even requires a fluid movement between conceptual and perceptual modes of creative practice. In this paper we will unpack different methods of material writing: the materiality of the act of writing with substances, site-specific/site-conditioned writing and 3D printing. Through the particularity of each mode of material writing our discussions will examine the points of attachment that we, as symbolizing creatures, produce in order to orient and reconstruct a world on the fly. Material writing constantly brings us back to earth, anchoring us to the expanded processes integral to hybrid-making.

Reverse logistics in the construction industry

Reverse logistics in construction refers to the movement of products and materials from salvaged buildings to a new construction site. While there is a plethora of studies looking at various aspects of the reverse logistics chain, there is no systematic review of literature on this important subject as applied to the construction industry. Therefore, the objective of this study is to integrate the fragmented body of knowledge on reverse logistics in construction, with the aim of promoting the concept among industry stakeholders and the wider construction community. Through a qualitative meta-analysis, the study synthesises the findings of previous studies and presents some actions needed by industry stakeholders to promote this concept within the real-life context. First, the trend of research and terminology related with reverse logistics is introduced. Second, it unearths the main advantages and barriers of reverse logistics in construction while providing some suggestions to harness the advantages and mitigate these barriers. Finally, it provides a future research direction based on the review.

Silica fouling in high salinity waters in reverse osmosis desalination (sodium-silica system)

Silica fouling patterns in a sodium–silica system and the effect of pH on residual dissolved silica concentrations are reported. The unique chemical affinity between sodium and silica (SO4) prevented silica scale deposition on the membrane surface during reverse osmosis (RO) desalination. It was found that high concentrations of sodium in solutions depressed silica solubility to 81–84 mg L−1 for a maximum NaCl salinity of 60–65 g L−1. Using a range of membrane examination techniques, it was found that no silica scale formed on the RO membrane surfaces from NaCl solutions free from cations such as Ca, Al and Fe. This was considered to be the result of sodium ions acting as a barrier between polymeric silica and the membrane surface.