246 research outputs found

    Forum Session at the First International Conference on Service Oriented Computing (ICSOC03)

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    The First International Conference on Service Oriented Computing (ICSOC) was held in Trento, December 15-18, 2003. The focus of the conference ---Service Oriented Computing (SOC)--- is the new emerging paradigm for distributed computing and e-business processing that has evolved from object-oriented and component computing to enable building agile networks of collaborating business applications distributed within and across organizational boundaries. Of the 181 papers submitted to the ICSOC conference, 10 were selected for the forum session which took place on December the 16th, 2003. The papers were chosen based on their technical quality, originality, relevance to SOC and for their nature of being best suited for a poster presentation or a demonstration. This technical report contains the 10 papers presented during the forum session at the ICSOC conference. In particular, the last two papers in the report ere submitted as industrial papers

    Processing GOTO data with the Rubin Observatory LSST Science Pipelines I: Production of coadded frames

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    The past few decades have seen the burgeoning of wide field, high cadence surveys, the most formidable of which will be the Legacy Survey of Space and Time (LSST) to be conducted by the Vera C. Rubin Observatory. So new is the field of systematic time-domain survey astronomy, however, that major scientific insights will continue to be obtained using smaller, more flexible systems than the LSST. One such example is the Gravitational-wave Optical Transient Observer (GOTO), whose primary science objective is the optical follow-up of Gravitational Wave events. The amount and rate of data production by GOTO and other wide-area, high-cadence surveys presents a significant challenge to data processing pipelines which need to operate in near real-time to fully exploit the time-domain. In this study, we adapt the Rubin Observatory LSST Science Pipelines to process GOTO data, thereby exploring the feasibility of using this "off-the-shelf" pipeline to process data from other wide-area, high-cadence surveys. In this paper, we describe how we use the LSST Science Pipelines to process raw GOTO frames to ultimately produce calibrated coadded images and photometric source catalogues. After comparing the measured astrometry and photometry to those of matched sources from PanSTARRS DR1, we find that measured source positions are typically accurate to sub-pixel levels, and that measured L-band photometries are accurate to ∌50 mmag at mL∌16 and ∌200 mmag at mL∌18. These values compare favourably to those obtained using GOTO's primary, in-house pipeline, GOTOPHOTO, in spite of both pipelines having undergone further development and improvement beyond the implementations used in this study. Finally, we release a generic "obs package" that others can build-upon should they wish to use the LSST Science Pipelines to process data from other facilities

    University of Memphis commencement, 2012 August. Program

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    Program for the Summer convocation of the 100th commencement of the University of Memphis at Memphis, Tennessee, held at the FedEx Forum on August 12, 2012.https://digitalcommons.memphis.edu/speccoll-ua-pub-commencements/1174/thumbnail.jp

    SkyMapper Southern Survey: First Data Release (DR1)

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    We present the first data release (DR1) of the SkyMapper Southern Survey, a hemispheric survey carried out with the SkyMapper Telescope at Siding Spring Observatory in Australia. Here, we present the survey strategy, data processing, catalogue construction and database schema. The DR1 dataset includes over 66,000 images from the Shallow Survey component, covering an area of 17,200 deg2^2 in all six SkyMapper passbands uvgrizuvgriz, while the full area covered by any passband exceeds 20,000 deg2^2. The catalogues contain over 285 million unique astrophysical objects, complete to roughly 18 mag in all bands. We compare our grizgriz point-source photometry with PanSTARRS1 DR1 and note an RMS scatter of 2%. The internal reproducibility of SkyMapper photometry is on the order of 1%. Astrometric precision is better than 0.2 arcsec based on comparison with Gaia DR1. We describe the end-user database, through which data are presented to the world community, and provide some illustrative science queries.Comment: 31 pages, 19 figures, 10 tables, PASA, accepte

    The Melbourne art scene and the Victorian artists’ society 1870-2020

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    This thesis is a socio-cultural history, utilising the Victorian Artists’ Society as a longitudinal case study to look at the extent to which it has serviced the professional needs of artists. The Victorian Artists’ Society, formed in 1870, is the oldest organisation representing the visual arts in Victoria and, as such, is an appropriate vehicle to examine the discourse between history and the construction of cultural values in the visual arts in Melbourne. The Melbourne ‘art scene’ has existed since Victoria’s proclamation as a separate colony in 1851. During the greater part of this time, the Victorian Artists’ Society functioned as a meeting and an exhibition space for visual artists. Although it is Australia’s second oldest continuous organisation representing visual artists, the Society has been uncontroversial and largely ignored by academics as a focus of research in its own right. Notwithstanding, the two groups subject of the most academic attention and research, namely the Australian Academy of Art and the Contemporary Art Society, were announced and formed within its walls, with many of their key proponents members of the Society. Researching extensive archival records, this thesis explores the relationship that existed between the Society and Melbourne’s art community throughout its 150-year history. It historically interrogates to what extent the Society has been a harbinger for change. Through a study of organisations and events impacting the Melbourne art scene, the thesis argues the relevance of the Society to professional and amateur artists today. It reviews how societies, and clubs in general, once servicing the needs of all artists, have evolved into a more general function, and what role the emergence of the commercial gallery system played as the main platform for the success of the artist. Finally, it examines what sustains, inspires, and informs contemporary professional artists working in Melbourne today.Doctor of Philosoph

    HOW COMPETITIVE IS PHOTOVOLTAIC ELECTRICITY

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    Over the last decade prices for residential grid-connected PV systems have decreased by 50 to 80% depeding on the local market conditions. Electricity production from residential photovoltaic solar systems has shown that it can be cheaper as residential electricity prices in a growing number of countries, depending on the actual electricity price and the local solar radiation level. The article shows how the financing costs for a PV system and the actual electricity price determine the economics of a unsubsidised PV system.JRC.F.7-Renewable Energ
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