40 research outputs found

    Minister Fanie Botha besoek die RAU

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    Format: TIFF; Size: 1.42 MB; Dimensions: 1382 x 1079 pixels; Resolution: 300 ppiMinister Fanie Botha visited the RAU. On the photo he and the Vice-Principal, prof. J.P. Poolman, appear with Mrs. M. Marx, member of the provincial government, Miss. Reneé Robinson, SRC member and Mr Roelf Meyer, member of parliament

    Minister Fanie Botha besoek die RAU

    No full text
    Format: TIFF; Size: 1.42 MB; Dimensions: 1382 x 1079 pixels; Resolution: 300 ppiMinister Fanie Botha visited the RAU. On the photo he and the Vice-Principal, prof. J.P. Poolman, appear with Mrs. M. Marx, member of the provincial government, Miss. Reneé Robinson, SRC member and Mr Roelf Meyer, member of parliament

    From operations research to software engineering and beyond

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    The Post-Proceedings of this Festschrift will be formally published in The South African Computer Journal number 41.Black and white photo with textPre-Proceedings, with greetings and contributions by Tonie Botha, Roelf van den Heever, Linda Marshall, Jan Roos, Sergei Obiedkov, Bob Jolliffe, Tinus Strauss, John A. van der Poll, Gertjan Zwartjes, Loek Cleophas, Jan Holub, Stanislav Stekr, Vali Lalioti, Thomas Meyer, Alexandru Telea, Heorhiy Byelas, Lynette van Zijl, Lesley Raitt, Vreda Pieterse, Marlene Ross, W. H. Morkel Theunissen, Dewald Roode, Judith Bishop, Martin S. Olivier, Yoshinao Isobe, Markus Roggenbach and Iwan Vosloo

    Development of diode end-pumped Nd:YLF lasers at 1314 nm for high power operation

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    Thesis (PhD)--Stellenbosch University, 2016ENGLISH ABSTRACT : Please refer to the full text abstract.AFRIKAANSE OPSOMMING : Raadpleeg asseblief die volteks opsomming.Doctora

    Pretoriana, no. 038, April 1962

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    Pretoria se verkeersplan = Pretoria's traffic plan / T.H. Janse van Vuuren -- Konsep vir die Genootskap Oud-Pretoria oor verkeersplan / J.J.N. Cloete -- Voorgestelde parkeergarage onder Kerkplein -- Die toekoms van Kerkplein / P.R. Botha -- The origin of the name Colbyn / C.J. Beanes -- Wierdabrug oor Sesmylspruit / H.M. Rex -- Joint traffic plan to be drawn up for Pretoria -- City planning : our Society's role / A.M. Dave

    Progress with the new research data management system at HartRAO

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    The Hartebeesthoek Radio Astronomy Observatory (HartRAO) participates in global astronomic and geodetic research activities. Astronomy activities focus largely on the use of the 26‑m radio telescope to conduct astronomical observations- single-dish observations and astronomical Very Long Baseline Interferometry (VLBI), whilst geodetic activities focus on using the HartRAO 15-m and 26-m radio telescopes for geodetic VLBI, Global Navigation Satellite Systems (GNSS) positional reference stations, weather data, seismic systems, satellite laser ranging (SLR) and Doppler Orbitography and Radiopositioning (DORIS) systems. Added to the existing instruments and techniques are gravimetric instruments, a Lunar Laser Ranger (LLR) and, in the near future, a VLBI Global Observing System (VGOS) telescope. HartRAO is also participating in the African VLBI Network (AVN), a network of radio telescopes in Africa. Data and data products produced by HartRAO's expanded range of on-site and off-site instruments must be archived and stored at HartRAO and made accessible to the scientific community. The data management and storage systems currently being used have certain drawbacks, such as being distributed and outdated as well as having a limited capacity to manage additional large data volumes, types and user requirements. This necessitated the design and implementation of a new, next-generation Geodetic Research Data Management System (GRDMS), which will comply with internationally accepted standards. Main objectives of the system are to organise, structure and store geodesy and geodynamics related data and data products in a central data bank, maintain information about the archival of the data and disseminate data, data products and information in a timely manner to the global research community. Components of our data management system will be similar to and incorporate the same software as that of the Crustal Dynamics Data Information System (CDDIS) and University NAVSTAR Consortium (UNAVCO). Data structures and file-naming conventions of the CDDIS and UNAVCO will be used for all geodetic data. Each dataset will receive persistent interoperable identifiers, Digital Object Identifiers (DOIs). A web-based graphic user interface (GUI) for the dissemination of data and data products will be provided to users. We present progress to date on various sub-systems as well as a top-level conceptual model of the GRDMS

    Progress with implementing the new research data management system at HartRAO

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    The Hartebeesthoek Radio Astronomy Observatory (HartRAO) participates in global radio astronomy and fundamental astronomy (space geodesy) research activities. Data and data products produced by HartRAO’s expanding range of on-site and off-site instrumentation must be archived and stored at HartRAO and made accessible to the scientific community. The data management and storage systems currently being used for managing fundamental astronomy data are not capable of handling the large volumes of data and have become obsolete. This necessitated the design and implementation of a next-generation Geodetic Research Data Management System (GRDMS), which complies with internationally accepted data service standards. We present the top-level conceptual model of the GRDMS and progress to date with developments of various sub-systems, data structuring and organisation within the sub-systems

    Progress with implementing the new research data management system at HartRAO

    No full text
    The Hartebeesthoek Radio Astronomy Observatory (HartRAO) participates in global radio astronomy and fundamental astronomy (space geodesy) research activities. Data and data products produced by HartRAO’s expanding range of on-site and off-site instrumentation must be archived and stored at HartRAO and made accessible to the scientific community. The data management and storage systems currently being used for managing fundamental astronomy data are not capable of handling the large volumes of data and have become obsolete. This necessitated the design and implementation of a next-generation Geodetic Research Data Management System (GRDMS), which complies with internationally accepted data service standards. We present the top-level conceptual model of the GRDMS and progress to date with developments of various sub-systems, data structuring and organisation within the sub-systems
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