Checkpointing of parallel applications in a Grid environment

The Grid environment is generic, heterogeneous, and dynamic with lots of unreliable resources making it very exposed to failures. The environment is unreliable because it is geographically dispersed involving multiple autonomous administrative domains and it is composed of a large number of components. Examples of failures in the Grid environment can be: application crash, Grid node crash, network failures, and Grid system component failures. These types of failures can affect the execution of parallel/distributed application in the Grid environment and so, protections against these faults are crucial. Therefore, it is essential to develop efficient fault tolerant mechanisms to allow users to successfully execute Grid applications. One of the research challenges in Grid computing is to be able to develop a fault tolerant solution that will ensure Grid applications are executed reliably with minimum overhead incurred. While checkpointing is the most common method to achieve fault tolerance, there is still a lot of work to be done to improve the efficiency of the mechanism. This thesis provides an in-depth description of a novel solution for checkpointing parallel applications executed on a Grid. The checkpointing mechanism implemented allows to checkpoint an application at regions where there is no interprocess communication involved and therefore reducing the checkpointing overhead and checkpoint size

Graphic design as urban design: towards a theory for analysing graphic objects in urban environments

This thesis presents a model for analysing the graphic object as urban object, by considering atypical fields of discourse that contribute to the formation of the object domain. The question: what is graphic design as urban design? directs the research through an epistemological design study comprising: an interrogation of graphic design studio practice and the articulation of graphic design research questions; a review and subsequent development of research strategy, design and method towards the articulation of methodology that reflects the nature of the inquiry; a detailed analysis of five different ways to study and research graphic design as urban design, in geography, language, visual communication, art and design, and urban design. The outcome of the investigation is a model that enables future research in the urban environment to benefit from micro-meso-macrographic analysis. The model endeavours to provide a way to evaluate, design and enhance ‘public places and urban spaces’ (Carmona et al., 2010) by considering different scales of symbolic thought and deed. This has been achieved by acknowledging the relationship between the relatively miniscule detail of graphic symbolism, the point at which this becomes visible through increased scale, and the instances when it dominates the urban realm. Examples are considered that show differences between, for example, the size and spacing of letter shapes on a pedestrian sign, compared to the ‘visual’ impact of an iconic building in the cityscape. In between is a myriad of graphic elements that are experienced and designed by many different professional disciplines and occupations. These are evidenced and explained. Throughout the study an indiscriminating literature review is interwoven with the text, accompanied by tabular information, and visual data in the form of photographs and diagrams. This is mainly research-driven data utilising photographs from fieldwork in Brazil, Canada, Hong Kong, Italy, Portugal, South Korea, United Kingdom, and United States of America. The methodology integrates a transdisciplinary adaptive theory approach derived from sociological research, with graphic method (utilising a wider scope of visual data usually associated with graph theory). The following images provide sixteen examples of artefacts representing the graphic object as urban object phenomenon

Mine Action: Lessons and Challenges

Mine Action: Lessons and Challenges represents the views of selected experts as to what some of the key lessons have been, and what challenges remain for the future. Following an Executive Summary of its main conclusions and findings, this work is laid out in two parts. Part I looks at the core activities — the “pillars” — of mine action: advocacy, victim assistance, mine risk education, demining (survey, marking and clearance of mines and unexploded ordnance) and stockpile destruction. Part II looks at key management issues, specifically, programme coordination and management, information management and capacity development. This work concludes with a thought-provoking assessment of what mine action has actually achieved

IKUWA6. Shared Heritage

Celebrating the theme ‘Shared heritage’, IKUWA6 (the 6th International Congress for Underwater Archaeology), was the first such major conference to be held in the Asia-Pacific region, and the first IKUWA meeting hosted outside Europe since the organisation’s inception in Germany in the 1990s. A primary objective of holding IKUWA6 in Australia was to give greater voice to practitioners and emerging researchers across the Asia and Pacific regions who are often not well represented in northern hemisphere scientific gatherings of this scale; and, to focus on the areas of overlap in our mutual heritage, techniques and technology. Drawing together peer-reviewed presentations by delegates from across the world who converged in Fremantle in 2016 to participate, this volume covers a stimulating diversity of themes and niche topics of value to maritime archaeology practitioners, researchers, students, historians and museum professionals across the world

Graphic design as urban design: towards a theory for analysing graphic objects in urban environments.

This thesis presents a model for analysing the graphic object as urban object, by considering atypical fields of discourse that contribute to the formation of the object domain. The question: what is graphic design as urban design? directs the research through an epistemological design study comprising: an interrogation of graphic design studio practice and the articulation of graphic design research questions; a review and subsequent development of research strategy, design and method towards the articulation of methodology that reflects the nature of the inquiry; a detailed analysis of five different ways to study and research graphic design as urban design, in geography, language, visual communication, art and design, and urban design. The outcome of the investigation is a model that enables future research in the urban environment to benefit from micro-meso-macrographic analysis. The model endeavours to provide a way to evaluate, design and enhance ‘public places and urban spaces’ by considering different scales of symbolic thought and deed. This has been achieved by acknowledging the relationship between the relatively miniscule detail of graphic symbolism, the point at which this becomes visible through increased scale, and the instances when it dominates the urban realm. Examples are considered that show differences between, for example, the size and spacing of letter shapes on a pedestrian sign, compared to the ‘visual’ impact of an iconic building in the cityscape. In between is a myriad of graphic elements that are experienced and designed by many different professional disciplines and occupations. These are evidenced and explained. Throughout the study an indiscriminating literature review is interwoven with the text, accompanied by tabular information, and visual data in the form of photographs and diagrams. This is mainly research-driven data utilising photographs from fieldwork in Brazil, Canada, Hong Kong, Italy, Portugal, South Korea, United Kingdom, and United States of America. The methodology integrates a transdisciplinary adaptive theory approach derived from sociological research, with graphic method (utilising a wider scope of visual data usually associated with graph theory). The following images provide sixteen examples of artefacts representing the graphic object as urban object phenomenon