Finite element modelling of metallic tubular crash structures with an explicit code

Numerous experimental studies have been carried out to investigate the collapse of tubular metallic crash structures under axial compression. Some simple theoretical models have been developed but these often assume one type of progressive collapse, which is not always representative of the real situation. Finite Element (FE) models, when further refined, have the potential to predict the actual collapse mode and how it influences the load-displacement and energy absorption characteristics. This paper describes an FE modelling investigation with the explicit code LS−DYNA. An automatic mesh generation programme written by the authors is used to set up shell and solid element tube models. Mesh specification issues and features relating to the contact and friction models are discussed in detail. The crush modes, load-deflection characteristics and energy absorption values found in the simulations are compared with a reasonable degree of correlation to those observed in a physical testing programme; however, improvements are still required.

Recycling workflows and services through discovery and reuse

Scientific workflows are becoming a valuable tool for scientists to capture and automate e-Science procedures. Their success brings the opportunity to publish, share, reuse and repurpose this explicitly captured knowledge. Within the myGrid project, we have identified key resources that can be shared including complete workflows, fragments of workflows and constituent services. We have examined the alternative ways these can be described by their authors (and subsequent users), and developed a unified descriptive model to support their later discovery. By basing this model on existing standards, we have been able to extend existing Web Service and Semantic Web Service infrastructure whilst still supporting the specific needs of the e-Scientist. myGrid components enable a workflow life-cycle that extends beyond execution, to include discovery of previous relevant designs, reuse of those designs, and subsequent publication. Experience with example groups of scientists indicates that this cycle is valuable. The growing number of workflows and services mean more work is needed to support the user in effective ranking of search results, and to support the repurposing process.

KClone: A Proposed Approach to Fast Precise Code Clone Detection

In all applications of clone detection it is important to have precise and efficient clone identification algorithms. This paper proposes and outlines a new algorithm, KClone for clone detection that incorporates a novel combination of lexical and local dependence analysis to achieve precision, while retaining speed. The paper also reports on the initial results of a case study using an implementation of KClone with which we have been experimenting. The results indi- cate the ability of KClone to find types-1,2, and 3 clones compared to token-based and PDG-based techniques. The paper also reports results of an initial empirical study of the performance of KClone compared to CCFinderX.

Automatically Adapting Source Code to Document Provenance

Being able to ask questions about the provenance of some data requires documentation on each influence on that data's existence and content. Much software exists, and is being developed, for which there is no provenance-awareness, i.e. at best, the data it outputs can be connected to its inputs, but with no record of intermediate processing. Further, where some record of processing does exist, e.g. as logs, it is not in a form easily connected with that of other processes. We would like to enable compiled software to record useful documentation without requiring prior manual adaptation. In this paper, we present an approach to adapting source code from its original form without manual manipulation, to record information on data provenance during execution.

Review of greywater reuse practices in Victoria

Greywater reuse has become popular in rural and urban communities of Australia. In recent years, the Barwon region of Victoria has been affected by drought and as a result, water restrictions were imposed at different stages. While a water conservation by-law was introduced in February 2003 with overwhelming community support, greywater reuse is still debated among householders, Environment Protection Authority (EPA), local councils, and the water authorities. Higher levels of greywater reuse are needed due to low average rainfall in the region and high water consumption per capita. This paper looks at the position of the different parties that govern greywater reuse and presents the factors that restrain uniform reuse practices. Factors considered include quantity and quality of greywater generated in the Barwon region, current regulatory controls as reviewed through a series of surveys of local councils and water authorities. While the water restrictions resulted in an increased demand for alternative means of watering garden areas, the regulatory conditions were found to be unsettled about greywater reuse, with a wide range of concerns making these authorities unwilling to encourage it.

Sharing and reuse of web developers experience

Development of commercial web systems is laborious, lengthy and costly. This is partly due to the fact that the methods of their development can hardly cope with the complexity of provided services. Such services may need to be distributed and collaborative, require sophisticated software architecture, be rich in form, content and interactivity, and have a wide range of potentially casual users. While web development methodologies are slowly emerging from research methodologies, their adoption is far from wide-spread. To improve this situation, the authors propose an approach based on the observed practices of professional web developers, who openly share and reuse their web development experience, while guarding their development workproducts. To this end, we suggest to enhance web development methods, by collecting problem-solving experience of web developers, packaging it into a reusable form, and providing a navigable decision structure assisting developers in identifying proven expert solutions suitable for a given problem context.

Address reuse in wireless sensor networks

Sensor Networks have applications in diverse fields. While unique addressing is not a requirement of many data collecting applications of wireless sensor networks, it is vital for the success of applications such as emergency response. Data that cannot be associated with a specific node becomes useless in such situations. In this work we propose a dynamic addressing mechanism for wireless sensor networks. The scheme enables successful reuse of addresses in event-driven wireless sensor networks. It also eliminates the need for network-wide Duplicate Address Detection (DAD) to ensure uniqueness of network level addresses.

Application of the adaptive reuse potential model in Hong Kong : a case study of Lui Seng Chun

There is an increasing complexity and interplay between all of the issues associated with property portfolio decisions. This paper explores the relationships between financial, environmental and social parameters associated with building adaptive reuse by way of a case study. A new model predicting adaptive reuse potential is applied to a heritage building in Hong Kong known as Lui Seng Chun. Such application can assist in the transformation of the building and property industry towards more sustainable practices, strategies and outcomes, by providing a means by which the industry can identify and rank existing buildings that have high potential for adaptive reuse. In Hong Kong's case it provides an ability for sustainable, responsive energy and natural resource management by allowing issues regarding excessive and inappropriate resource use to be identified and assessed, and appropriate management strategies to be implemented. Given the building's current age and condition, Lui Seng Chun has at least 25 years of physical life remaining. The further application of a multi-criteria sustainability evaluation tool supports the conclusion that an adaptive reuse strategy for this building will make a demonstrable contribution to the economic, social and environmental amenity of Hong Kong. The application of these techniques to other buildings with significant "embedded physical life" is highly recommended.

The diversity of emergency code telephone numbers in Australian hospitals: the feasibility of an Australian standard emergency code

This study explored the diversity of emergency code telephone numbers currently in use in Australian hospitals and examined the feasibility of a standard emergency code telephone number for all Australian hospitals, based on the United Kingdom experience. An email and telephone convenience survey of Australian hospitals from six states and two territories was conducted. Of the 108 hospitals surveyed, seven did not use a telephone number system and used a button/ pager system to call an emergency. Of the 101 hospitals surveyed that used a telephone number system, 40 different emergency telephone numbers were in place, and in nine hospitals the telephone number used for Code Blue (medical emergency) was different to the telephone number used for other emergency codes. With increasing mobility of staff across hospitals, uniformity of emergency code telephone numbers is required to reduce confusion, potential danger and improve staff response in emergency situations. A single Australian standard emergency telephone number for all Australian hospitals is advocated.

Skew arcs and Wagner's [23, 14, 5] code

In 1966, Wagner used computational search methods to construct a  [23,14,5] code. This code has been examined with much interest since that time, in hopes of finding a geometric construction and possible code extensions. In this article, we give a simple geometric construction for Wagner's code and consider extensions of this construction.

Codes of ethics in Sweden's largest public sector organizations : communicating the intent of the code within the organization

The aim of the study was to examine the ways that public sector organizations in Sweden communicated the intent of their codes of ethics to their employees. Primary data was obtained via a self-administered mail questionnaire distributed to a census of the top 100 organizations.

The study identified a range of methods used by organizations to integrate the ethos of codes into corporate culture. These methods included communication of the code, company induction of new staff, consequences for a breach of the code, ethical performance, an ethics ombudsman, the support of whistleblowers, a standing ethics committee, ethics education, and an ethics education committee.

Whilst many organizations have instituted ethical behaviour initiatives, activities specifically targeted at exposure, education and support for staff to perform ethically were found to be underdeveloped.