Temporal processing and reading disability

The present investigation examined thehypothesis that early auditory temporalprocessing deficits cause later specificreading disability by impairing phonologicalprocessing (Farmer & Klein 1995; Tallal1980, 1984). Temporal processing ability atschool entry was examined using Tallal'sRepetition Test in a large unselected sample ofover 500 children followed over subsequentyears. Although our data confirmed the presenceof certain non-speech auditory processingdeficits in children later classified asspecific reading-disabled, many findings wereclearly at odds with a causal interpretation ofthis relationship. (1) Reading-disabled (RD)children were impaired at school entry on thesubtest with long interstimulus intervals(ISIs) but not the critical short-ISIsubtest. (2) RD children were not inferior toreading-age (RA) controls. (3) A subgroup of RDchildren with evidence of temporal deficitswere no less proficient on later phonologicalor reading measures than RD children with noevidence of early temporal impairment. (4)Although there was a reliable concurrentcorrelation between temporal deficits andphonological awareness at school entry(suggesting a possible common causeexplanation), early temporal deficits did notpredict later phonological impairment,pseudoword processing difficulties, or specificreading disability. On the other hand, earlytemporal deficits did predict later oralreceptive vocabulary and reading comprehensionweaknesses. These findings suggest thatauditory temporal deficits in dyslexics may beassociated with the same dysphasic-typesymptoms observed by Tallal and her colleaguesin specific language-impaired populations, butdo not cause the core phonological deficitsthat characterize dyslexic groups.

Platform for reliable computing on clusters using group communications

Shared clusters represent an excellent platform for the execution of parallel applications given their low price/performance ratio and the presence of cluster infrastructure in many organisations. The focus of recent research efforts are on parallelism management, transport and efficient access to resources, and making clusters easy to use. In this thesis, we examine reliable parallel computing on clusters. The aim of this research is to demonstrate the feasibility of developing an operating system facility providing transport fault tolerance using existing, enhanced and newly built operating system services for supporting parallel applications. In particular, we use existing process duplication and process migration services, and synthesise a group communications facility for use in a transparent checkpointing facility. This research is carried out using the methods of experimental computer science. To provide a foundation for the synthesis of the group communications and checkpointing facilities, we survey and review related work in both fields. For group communications, we examine the V Distributed System, the x-kernel and Psync, the ISIS Toolkit, and Horus. We identify a need for services that consider the placement of processes on computers in the cluster. For Checkpointing, we examine Manetho, KeyKOS, libckpt, and Diskless Checkpointing. We observe the use of remote computer memories for storing checkpoints, and the use of copy-on-write mechanisms to reduce the time to create a checkpoint of a process. We propose a group communications facility providing two sets of services: user-oriented services and system-oriented services. User-oriented services provide transparency and target application. System-oriented services supplement the user-oriented services for supporting other operating systems services and do not provide transparency. Additional flexibility is achieved by providing delivery and ordering semantics independently. An operating system facility providing transparent checkpointing is synthesised using coordinated checkpointing. To ensure a consistent set of checkpoints are generated by the facility, instead of blindly blocking the processes of a parallel application, only non-deterministic events are blocked. This allows the processes of the parallel application to continue execution during the checkpoint operation. Checkpoints are created by adapting process duplication mechanisms, and checkpoint data is transferred to remote computer memories and disk for storage using the mechanisms of process migration. The services of the group communications facility are used to coordinate the checkpoint operation, and to transport checkpoint data to remote computer memories and disk. Both the group communications facility and the checkpointing facility have been implemented in the GENESIS cluster operating system and provide proof-of-concept. GENESIS uses a microkernel and client-server based operating system architecture, and is demonstrated to provide an appropriate environment for the development of these facilities. We design a number of experiments to test the performance of both the group communications facility and checkpointing facility, and to provide proof-of-performance. We present our approach to testing, the challenges raised in testing the facilities, and how we overcome them. For group communications, we examine the performance of a number of delivery semantics. Good speed-ups are observed and system-oriented group communication services are shown to provide significant performance advantages over user-oriented semantics in the presence of packet loss. For checkpointing, we examine the scalability of the facility given different levels of resource usage and a variable number of computers. Low overheads are observed for checkpointing a parallel application. It is made clear by this research that the microkernel and client-server based cluster operating system provide an ideal environment for the development of a high performance group communications facility and a transparent checkpointing facility for generating a platform for reliable parallel computing on clusters.

The Legacy of Iraq: from the 2003 War to the ‘Islamic State’

In March 2003, a US-led ‘Coalition of the Willing’ launched a pre-emptive intervention against Iraq. The nine long years of military occupation that followed saw an ambitious project to turn Iraq into a liberal democracy, underpinned by free-market capitalism and constituted by a citizen body free to live in peace and prosperity. However, the Iraq war did not go to plan and the coalition were forced to withdraw all combat troops at the end of 2011, having failed to deliver on their promise of a democratic, peaceful and prosperous Iraq. The Legacy of Iraq: From the 2003 War to the ‘Islamic State’ seeks to not only reflect on this abject failure but to put forth the argument that key decisions and errors of judgment on the part of the coalition and the Iraqi political elite set in train a sequence of events that have had devastating consequences for Iraq, for the region and for the world. Today, as the nation faces perhaps its greatest challenge in the wake of the devastating advance of the Islamic State of Iraq and Syria (ISIS) and another US-led coalition undertakes renewed military action in Iraq, understanding the complex and difficult legacies of the 2003 war could not be more urgent. To ignore the legacies of the Iraq war and to deny their connection to contemporary events means that vital lessons will be ignored and the same mistakes will be made.

Introduction : The Iraq legacies: intervention, occupation, withdrawal and beyond

This chapter examines the various and complex legacies of the Iraq War of 2003. In follows the trajectory of these legacies back to the earliest days of the US intervention and examines the extent to which key decisions and errors of judgement on the part ofthe Coalition and the Iraqi political elite have had unexpected and devastating consequences for Iraq today. The chapter documents how the war dramatically altered the lives of ordinary Iraqis and led to many of the most deep-seated and intractable problems facing Iraq, the region and the world today. In discussing these legacies, this chapter also points to the root causes of the rapid turn of events that transpired after the dramatic advance of ISIS in mid-2014. The argument here being that the Iraq War of 2003 has left behind a sequence of deeply felt but rarely examined legacies and that together these legacies have served as the catalyst of Iraq’s current chaos. Therefore, this chapter is not only timely, but it also addresses a significant lacuna in academic and policy debates by addressing a series of urgent questions concerning the legacies of Iraq.

Conclusion : The Iraq legacies and the roots of the ‘Islamic State’

With the deadly ISIS advance, the sudden rousing of Shia militias and the threat of Kurdish secession, Iraq faces a host of deep-seated and intractable problems. Together, these events raise a number of serious questions, not just for Iraq and its future but also for the broader Middle East, the United States and its Coalition partners and the international community. While these challenges and questions will drive much academic debate, political analysis and media discussion in the months and years ahead, they are not the central purpose of this chapter. While there is always a risk in commenting on unfolding events, including the potential to overstate their significance and likely long-term impact, it is difficult to ignore the significance of the deadly ISIS advance and all that has happened since. This chapter argues that key to understanding these events is coming to terms with the three varied and complex legacies of the 2003 Iraq War. The first central legacy of the Iraq War is the ongoing consequences of several critical mistakes made by the US-led Coalition before, during and immediately after the 2003 intervention. The second legacy addressed here is the fact that the 2003 war shattered – perhaps irreversibly - Iraqis fragile cultural mosaic and its rich and complex history of overlapping and intersecting communities, ideologies and narratives. The third and final legacy of the 2003 Iraq War detailed in this chapter is its significant regional and global consequences – from spiralling sectarianism across the Middle East to a profound challenge to America’s status as the last remaining superpower and its use of military power for ‘humanitarian’ ends. The argument here is that these three important legacies set in train a sequence of events that have served as the collective catalyst for the expansion of the ‘Islamic State’ from mid-2014.

When Catholics turn right: the effects of the Islamic terrorism threat on the fragmented Catholic Italian voters

Italy, as well as most European countries, has been hit by a wave of anxiety arising from groups such as ISIS and Al Qaeda, whose effects on political attitudes are still under-examined. This article investigates the effect of the perceived threat of Islamic terrorism as a potential driver for a ‘right turn’ in the Catholic Italian electorate with open-ended interviews and an Internet-based experiment in which voters were randomly assigned to a terrorism threat manipulation and to a control condition (N = 138). The results show that the Islamic terroristic threat significantly increased the support for centre-right leaders who promoted in-group identity and out-group hostility towards Muslims. Implications for the debate about the effects of perceived threat on political opinions and the relevance of the findings beyond the Italian case are discussed at the end of the article.

A tale of 2 diplomats: China’s soft power conundrum

In the past couple of weeks, two foreign ministers have captured the Chinese public imagination. In a widely circulated video clip on the popular Chinese social media WeChat, the foreign minister of Saudi Arabia, Adel Al-Jubeir, is shown rebuking a Western journalist’s question about the “inherent” connection between the Islamic State (ISIS) and Islam. Another story involves Chinese Foreign Minister Wang Yi’s response to a Canadian journalist’s questions about China’s human rights. Both foreign ministers faced tricky questions from Western media (though in Wang Yi’s case, the questions were actually directed at his Canadian counterpart, Stéphane Dion), but that’s probably where their similarities end. The focus of Chinese social media is on the stark contrast between the two foreign ministers’ handling of their respective situations.

Funding the ‘Islamic State’: looting antiquities and the international black market

A key revenue stream for various militant groups across the Middle East, including the Islamic State in Iraq and Syria (ISIS), is the illicit looting and trafficking of antiquities which are sold on the international black market. Various heritage sites are being looted by ISIS and others with devastating efficiency and on an industrial scale. While exact figures are difficult to ascertain, the profits from these looting operations are estimated to be the second largest revenue stream for ISIS after the illegal sale of crude oil. The illicit trafficking of antiquities is therefore financing the devastating advance of ISIS and any effort, including that by the Australian Department of Defence, to defeat ISIS must address this significant issue. More research is urgently needed to understand the precise nature, scope and variety of antiquities looting across the Middle East, the extent to which it is funding groups like ISIS, and to consider Australia’s role in international strategies to stanch this ongoing problem.