title: A 28,000 year old excavated painted rock from Nawarla Gabarnmang, northern Australia

authors: David, Bruno O.

subjects: AMS dating

abstract: We report new archaeological excavations from northern Australia revealing part of a charcoal design likely to be c. 28,000 years old (and chrono-stratigraphically constrained within the period 15,600-45,600 cal BP) on a small rock slab fallen from the ceiling at the rockshelter of Nawarla Gabarnmang in Jawoyn country, Arnhem Land. This represents the oldest confirmed pictograph in Australia.

text: A 28,000 year old excavated painted rock from Nawarla Gabarnmang, northern Australia We report new archaeological excavations from northern Australia revealing part of a charcoal design likely to be c. 28,000 years old (and chrono-stratigraphically constrained within the period 15,600-45,600 cal BP) on a small rock slab fallen from the ceiling at the rockshelter of Nawarla Gabarnmang in Jawoyn country, Arnhem Land. This represents the oldest confirmed pictograph in Australia.

year: 2013

title: Programming for concurrency control in database systems

authors: Tan, Puay Hiang

subjects: database

abstract: Concurrency control problems in centralized Database Management Systems have been actively studied in past two decades. Various types of concurrency control mechanisms have been proposed and implemented in practice. Among these mechanisms, Two-Phase Locking, Timestamping and Optimistic mechanisms have attracted most attention. This thesis presents a survey on these three mechanisms, identifies their major problems and ways to resolve these problems.
Despite their popularity, literatures published to date on these three mechanisms are mostly theoretical in nature, discussions on their implementation issues are normally neglected. This thesis attempts to look into this aspect by investigating the use of concurrent programming techniques based on semaphore and monitor in their implementations. Detailed descriptions of the implemenations are given and various modifications to the concurrent programming techniques to improve their applicability in the DBMS environment are provided too.

text: Programming for concurrency control in database systems Concurrency control problems in centralized Database Management Systems have been actively studied in past two decades. Various types of concurrency control mechanisms have been proposed and implemented in practice. Among these mechanisms, Two-Phase Locking, Timestamping and Optimistic mechanisms have attracted most attention. This thesis presents a survey on these three mechanisms, identifies their major problems and ways to resolve these problems.
Despite their popularity, literatures published to date on these three mechanisms are mostly theoretical in nature, discussions on their implementation issues are normally neglected. This thesis attempts to look into this aspect by investigating the use of concurrent programming techniques based on semaphore and monitor in their implementations. Detailed descriptions of the implemenations are given and various modifications to the concurrent programming techniques to improve their applicability in the DBMS environment are provided too.

year: 1989

title: Developing restorative practices in schools: Some reflections

authors: Drewery, Wendy

subjects: Counselling

abstract: The use of disciplinary practices derived from restorative justice have recently been gaining popularity and inciting keen interest in the education community. Practices that have so far been introduced have tended to centre on conferencing, although there is a broadening range of other practices in schools that are being brought under the heading “restorative”. This paper offers some reflections on these developments, building on the experiences of a team at the University of Waikato, which completed two projects on restorative conferencing in schools for the Ministry of Education under the rubric of the Suspension Reduction Initiative, and continues to develop understanding of the practices. The projects included developing and trialling processes for suspension hearings using restorative conferencing and principles from restorative justice. Objectives of both projects were related to the desire to reduce numbers of suspensions and exclusions, particularly of Māori children. We argue that the introduction of restorative practices invites schools into some tectonic shifts in thinking about offending behaviour, about community, and ultimately about the purposes of education.

text: Developing restorative practices in schools: Some reflections The use of disciplinary practices derived from restorative justice have recently been gaining popularity and inciting keen interest in the education community. Practices that have so far been introduced have tended to centre on conferencing, although there is a broadening range of other practices in schools that are being brought under the heading “restorative”. This paper offers some reflections on these developments, building on the experiences of a team at the University of Waikato, which completed two projects on restorative conferencing in schools for the Ministry of Education under the rubric of the Suspension Reduction Initiative, and continues to develop understanding of the practices. The projects included developing and trialling processes for suspension hearings using restorative conferencing and principles from restorative justice. Objectives of both projects were related to the desire to reduce numbers of suspensions and exclusions, particularly of Māori children. We argue that the introduction of restorative practices invites schools into some tectonic shifts in thinking about offending behaviour, about community, and ultimately about the purposes of education.

year: 2005