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Restrictive cardiomyopathy and constrictive pericarditis: non-invasive distinction by digitised M mode echocardiography.

Morgan, J M; Raposo, L; Clague, J C; Chow, W H; Oldershaw, P J
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /01/1989 Português
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It is difficult to distinguish between restrictive cardiomyopathy and constrictive pericarditis on the basis of clinical findings and simple investigation. Cardiac catheterisation has been the reference standard for diagnosis but even this does not always permit an accurate distinction. A Summagraphics digitiser and Prime 750 computer system were used to digitise the echocardiograms of 15 patients with restrictive cardiomyopathy, 10 with constrictive pericarditis and a group of 20 age and sex matched normal subjects of similar age and sex distribution. Compared with controls, patients with restrictive cardiomyopathy showed a significant reduction in the following variables (a) decreased fractional shortening, (b) decreased peak left ventricular filling and emptying rates, (c) decreased percentage posterior wall thickening, and (d) decreased peak left ventricular posterior wall thickening and thinning rates. Whereas patients with constrictive pericarditis only had significantly reduced peak left ventricular filling and posterior wall thinning rates and significantly increased posterior wall thinning rate. When patients with restrictive cardiomyopathy were compared with those with constrictive pericarditis the significant differences were: (a) decreased peak left ventricular emptying rate...

Mammography soft-copy reading: to digitise priors or not, that is the question

Galloway, L
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
Português
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Digitise This! A Quick and Easy Remote Sensing Method to Monitor the Daily Extent of Dredge Plumes

Evans, Richard D.; Murray, Kathy L.; Field, Stuart N.; Moore, James A. Y.; Shedrawi, George; Huntley, Barton G.; Fearns, Peter; Broomhall, Mark; McKinna, Lachlan I. W.; Marrable, Daniel
Fonte: Public Library of Science Publicador: Public Library of Science
Tipo: Artigo de Revista Científica
Publicado em 11/12/2012 Português
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Technological advancements in remote sensing and GIS have improved natural resource managers’ abilities to monitor large-scale disturbances. In a time where many processes are heading towards automation, this study has regressed to simple techniques to bridge a gap found in the advancement of technology. The near-daily monitoring of dredge plume extent is common practice using Moderate Resolution Imaging Spectroradiometer (MODIS) imagery and associated algorithms to predict the total suspended solids (TSS) concentration in the surface waters originating from floods and dredge plumes. Unfortunately, these methods cannot determine the difference between dredge plume and benthic features in shallow, clear water. This case study at Barrow Island, Western Australia, uses hand digitising to demonstrate the ability of human interpretation to determine this difference with a level of confidence and compares the method to contemporary TSS methods. Hand digitising was quick, cheap and required very little training of staff to complete. Results of ANOSIM R statistics show remote sensing derived TSS provided similar spatial results if they were thresholded to at least 3 mg L−1. However, remote sensing derived TSS consistently provided false-positive readings of shallow benthic features as Plume with a threshold up to TSS of 6 mg L−1...

Elevational Distribution and Extinction Risk in Birds

White, Rachel L.; Bennett, Peter M.
Fonte: Public Library of Science Publicador: Public Library of Science
Tipo: Artigo de Revista Científica
Publicado em 07/04/2015 Português
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Mountainous regions are hotspots of terrestrial biodiversity. Unlike islands, which have been the focus of extensive research on extinction dynamics, fewer studies have examined mountain ranges even though they face increasing threats from human pressures – notably habitat conversion and climate change. Limits to the taxonomic and geographical extent and resolution of previously available information have precluded an explicit assessment of the relative role of elevational distribution in determining extinction risk. We use a new global species-level avian database to quantify the influence of elevational distribution (range, maximum and midpoint) on extinction risk in birds at the global scale. We also tested this relationship within biogeographic realms, higher taxonomic levels, and across phylogenetic contrasts. Potential confounding variables (i.e. phylogenetic, distributional, morphological, life history and niche breadth) were also tested and controlled for. We show that the three measures of elevational distribution are strong negative predictors of avian extinction risk, with elevational range comparable and complementary to that of geographical range size. Extinction risk was also found to be positively associated with body weight...

Towards an Open Source Archival Repository and Preservation System

Bradley, Kevin; Lei, Junran; Blackall, Chris
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Working/Technical Paper; Working/Technical Paper
Português
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This report identifies possible open source pathways for sustainable preservation and, more importantly, identifies the gaps in available technology and recommends a way for UNESCO to encourage digital communities to address that shortcoming. The report may be of some value to those intending to build a digital repository, but its intended audience are those who are responsible for, or are able to influence the direction of open source development so that a packagable and affordable sustainable digital archival storage system can be developed, supported and made available.; UNESCO; This project was sponsored jointly by UNESCO and the Australian Partnership for Sustainable Repositories, and carried out with the help of the National Library of Australia.

Sustainability Issues for Australian Research Data: The report of the Australian eResearch Sustainability Survey Project

Buchhorn, Markus; McNamara, Paul
Fonte: APSR Publicador: APSR
Tipo: Working/Technical Paper
Português
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The Australian e-Research Sustainability Survey (AERES) project was undertaken by the Australian Partnership for Sustainable Repositories (APSR) and the Australian Partnership for Advanced Computing (APAC) to survey the sustainability issues for data-intensive research projects, including the capabilities and demands of research groups and institutions for the storage, access, and long-term management of research data.

Investigating Data Management Practices in Australian Universities

Henty, Margaret; Weaver, Belinda; Bradbury, Stephanie; Porter, Simon
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Working/Technical Paper
Português
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It was in this environment of changing expectations for the provision of data management infrastructure that three Australian universities decided to investigate the needs of their own communities. The initiative came from The University of Queensland (UQ) and was taken up by The University of Melbourne (UM) and the Queensland University of Technology (QUT. All three are universities with an increasing focus on eResearch, and a desire to improve their support infrastructure. All three recognised that a first step towards this goal was to find out more about the current practices and training requirements of their research staff.

Investigating Data Management Practices in Australian Universities

Henty, Margaret; Weaver, Belinda; Bradbury, Stephanie; Porter, Simon
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Working/Technical Paper
Português
Relevância na Pesquisa
16.895857%
It was in this environment of changing expectations for the provision of data management infrastructure that three Australian universities decided to investigate the needs of their own communities. The initiative came from The University of Queensland (UQ) and was taken up by The University of Melbourne (UM) and the Queensland University of Technology (QUT. All three are universities with an increasing focus on eResearch, and a desire to improve their support infrastructure. All three recognised that a first step towards this goal was to find out more about the current practices and training requirements of their research staff.

Investigating Data Management Practices in Australian Universities

Henty, Margaret; Weaver, Belinda; Bradbury, Stephanie; Porter, Simon
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Working/Technical Paper
Português
Relevância na Pesquisa
16.895857%
It was in this environment of changing expectations for the provision of data management infrastructure that three Australian universities decided to investigate the needs of their own communities. The initiative came from The University of Queensland (UQ) and was taken up by The University of Melbourne (UM) and the Queensland University of Technology (QUT. All three are universities with an increasing focus on eResearch, and a desire to improve their support infrastructure. All three recognised that a first step towards this goal was to find out more about the current practices and training requirements of their research staff.

Towards an Open Source Archival Repository and Preservation System

Bradley, Kevin; Lei, Junran; Blackall, Chris
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Working/Technical Paper; Working/Technical Paper
Português
Relevância na Pesquisa
16.895857%
This report identifies possible open source pathways for sustainable preservation and, more importantly, identifies the gaps in available technology and recommends a way for UNESCO to encourage digital communities to address that shortcoming. The report may be of some value to those intending to build a digital repository, but its intended audience are those who are responsible for, or are able to influence the direction of open source development so that a packagable and affordable sustainable digital archival storage system can be developed, supported and made available.; UNESCO; This project was sponsored jointly by UNESCO and the Australian Partnership for Sustainable Repositories, and carried out with the help of the National Library of Australia.

Creating an ongoing resource through digitisation

Kornhauser, Bronia
Fonte: Australasian Association for Digital Humanities Publicador: Australasian Association for Digital Humanities
Tipo: Conference item Formato: 18 slides, Powerpoint presentation + 9 pages of notes + handouts
Português
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The Music Archive in the School of Music-Conservatorium at Monash University contains a diverse array of original and often unique sound, visual and bibliographic materials. A large percentage of the sound component represents decades of ethnomusicological field research and comprises reel-to-reel and cassette tapes, a growing number of which are slowly decaying. Some of our sound collections, which include cylinder recordings and 78 rpm records, have also been acquired as donations from a variety of organisations and interested members of the public. Preservation of such a valuable and extensive resource is therefore a top priority. Accordingly, we have successfully completed two digitisation projects (both ARC funded), and are currently undertaking a third in collaboration with Monash University’s ARROW (Australian Research Repositories Online to the World) team. In fact, collaboration has been a key factor in all three projects because it has facilitated the resolution of a number of issues associated with each particular stage – preparation, process and product – of digitisation. Some of those issues will be discussed in this paper and include observations about the criteria used to determine choice of material for digitisation; the manner of transporting the original media to and from a digitising service provider given the invaluable nature of the material; the metadata elements to describe the digitised sound files; storage of the digitised sound files and whether said storage is for preservation only with very limited access...

Can Schoolchildren Digitise Their History?

Fonte: Oxford : Archaeopress Publicador: Oxford : Archaeopress
Tipo: Artikel
Português
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Creative Gardens

Briscoe, Gerard; Lockwood, Joseph
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Português
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Can we move beyond simply networking creative individuals to establishing diverse communities of practice for innovation through discursive methods. Furthermore, can we digitise their creativity activities within an integrative socio-cultural collaborative technology platform that could then support distributed innovation. First, we consider the complexity of creative cultures from the perspective of design innovation, including how to nurture creativity activities in what we call Creative Gardens. Specifically, how they could grow, diverge, and combine, be- ing cultivated to nurture emergent, disruptive, collaborative innovation. Then, we consider the digitisation of Creative Gardens from the perspective of digital culture. Specifically, the tenets of Creative Gardens as dynamic and innovative communities. This includes considering the challenges and opportunities around digitisation, the influences around the connectivity with knowledge cultivation, and the potential for distributed innovation as collective intelligence to utilise diverse expertise. We conclude be considering the importance of the issues and questions raised, and their potential for the future.; Comment: 4 pages, conference

AMADEUS - The Acoustic Neutrino Detection Test System of the ANTARES Deep-Sea Neutrino Telescope

ANTARES collaboration; Aguilar, J. A.; Samarai, I. Al; Albert, A.; Anghinolfi, M.; Anton, G.; Anvar, S.; Ardid, M.; Jesus, A. C. Assis; Astraatmadja, T.; Aubert, J. -J.; Auer, R.; Barbarito, E.; Baret, B.; Basa, S.; Bazzotti, M.; Bertin, V.; Biagi, S.; Bi
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Português
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The AMADEUS (ANTARES Modules for the Acoustic Detection Under the Sea) system which is described in this article aims at the investigation of techniques for acoustic detection of neutrinos in the deep sea. It is integrated into the ANTARES neutrino telescope in the Mediterranean Sea. Its acoustic sensors, installed at water depths between 2050 and 2300 m, employ piezo-electric elements for the broad-band recording of signals with frequencies ranging up to 125 kHz. The typical sensitivity of the sensors is around -145 dB re 1V/muPa (including preamplifier). Completed in May 2008, AMADEUS consists of six "acoustic clusters", each comprising six acoustic sensors that are arranged at distances of roughly 1 m from each other. Two vertical mechanical structures (so-called lines) of the ANTARES detector host three acoustic clusters each. Spacings between the clusters range from 14.5 to 340 m. Each cluster contains custom-designed electronics boards to amplify and digitise the acoustic signals from the sensors. An on-shore computer cluster is used to process and filter the data stream and store the selected events. The daily volume of recorded data is about 10 GB. The system is operating continuously and automatically, requiring only little human intervention. AMADEUS allows for extensive studies of both transient signals and ambient noise in the deep sea...