5,712 research outputs found
Virtual Machine Support for Many-Core Architectures: Decoupling Abstract from Concrete Concurrency Models
The upcoming many-core architectures require software developers to exploit
concurrency to utilize available computational power. Today's high-level
language virtual machines (VMs), which are a cornerstone of software
development, do not provide sufficient abstraction for concurrency concepts. We
analyze concrete and abstract concurrency models and identify the challenges
they impose for VMs. To provide sufficient concurrency support in VMs, we
propose to integrate concurrency operations into VM instruction sets.
Since there will always be VMs optimized for special purposes, our goal is to
develop a methodology to design instruction sets with concurrency support.
Therefore, we also propose a list of trade-offs that have to be investigated to
advise the design of such instruction sets.
As a first experiment, we implemented one instruction set extension for
shared memory and one for non-shared memory concurrency. From our experimental
results, we derived a list of requirements for a full-grown experimental
environment for further research
Design as conversation with digital materials
This paper explores Donald Schön's concept of design as a conversation with materials, in the context of designing digital systems. It proposes material utterance as a central event in designing. A material utterance is a situated communication act that depends on the particularities of speaker, audience, material and genre.
The paper argues that, if digital designing differs from other forms of designing, then accounts for such differences must be sought by understanding the material properties of digital systems and the genres of practice that surround their use. Perspectives from human-computer interaction (HCI) and the psychology of programming are used to examine how such an understanding might be constructed.</p
An integrated approach to preparing, publishing, presenting and preserving theses
[Abstract]: This paper describes progress on a project funded by the Australian government to create Free
software; the Integrated Content Environment for research and scholarship (ICE-RS). ICE-RS is a
multi-faceted project which will add value to finished theses by making them available in both
HTML and PDF, as well as providing a mechanism for packaging multimedia theses. The project
will also concentrate on providing services for thesis production, with version control, automated
backup and collaboration services.
The paper begins with the established content management system that is the basis for the
project, ICE-RS , originally developed to create courseware packages. ICE includes distributed, version
controlled collaboration, using word processing software and works on multiple platforms, with
standard document formats. We survey other approaches to content authoring and publishing for
ETDs.
We showcase exploratory work on integration of the thesis writing process with Institutional
Repository software including publishing theses in both PDF and HTML with preservation and
descriptive metadata. The presentation will include demonstrations of thesis production at all stages
of development from proposal to completion.
In a more speculative vein, we will discuss opportunities for institutions to provide new levels of
support for candidates via automated thesis âdashboardâ progress reports, supervisor and examiner
annotation and comment and support for copyright considerations as early as possible in the
process
Investigating âChurnalismâ in real time news
Language Use in Past and Presen
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