scholarly journals Australian Research Effort for the SKA

2001 ◽  
Vol 182 ◽  
pp. 205-208
Author(s):  
Wim Brouw

AbstractThe next generation radio telescope being planned is the Square Kilometer Array (SKA): an international project which is currently in the research and development phase. Australia is one of the partner countries in the SKA consortium; here I describe some of the SKA research being undertaken in Australia.

1999 ◽  
Vol 16 (2) ◽  
pp. 152-159 ◽  
Author(s):  
Andrew Hopkins ◽  
Ron Ekers ◽  
Carole Jackson ◽  
Lawrence Cram ◽  
Anne Green ◽  
...  

AbstractThe Square Kilometre Array Radio Telescope is the next generation radio telescope. An international project is currently under way to design and build an instrument having an effective collecting area two orders of magnitude greater than that of any existing telescope. A number of separate studies are presently investigating how to design the Square Kilometre Array to best carry out the kinds of observations desired by the astronomical community. We present a summary of one of these studies, a workshop called The ‘Sub-microJansky Radio Sky’ held at the ATNF, Sydney, on 17 June 1998. This workshop addressed the nature of the radio sky at the very faint flux densities likely to be attainable by the Square Kilometre Array. In particular, each speaker investigated a separate population of radio sources and how the expected appearance of that population at such faint flux densities would dictate how to refine some of the design constraints for the Square Kilometre Array.


2019 ◽  
Vol 3 (2) ◽  
pp. 162-171
Author(s):  
Yulia Rachmawati ◽  
Syafdi Maizora ◽  
Della Maulidiya

ABSTRAKPenelitian ini bertujuan untuk menghasilkan Lembar Kerja Peserta Didik (LKPD) berbasis Discovery Learning pada Materi Bangun Datar Segiempat di Kelas VII SMP Negeri 1 Bengkulu Tengah yang memenuhi kriteria valid, praktis, dan efektif. Jenis penelitian ini adalah penelitian pengembangan (research and development) dengan mengadopsi prosedur Four-D (4D) yang dimodifikasi menjadi 3D yaitu tahap define (pendefinisian) design (perancangan)  dan develop (pengembangan) yang terdiri dari uji validitas. Instrumen yang digunakan adalah lembar validasi yang terdiri dari lembar validasi materi, lembar validasi kontruksi dan lembar validasi bahasa. Hasil penelitian menunjukkan bahwa LKPD berbasis Discovery Learning pada Materi Bangun Datar Segiempat di Kelas VII SMP Negeri 1 Bengkulu Tengah termasuk dalam kategori  sangat valid dari segi materi berdasarkan sebelas aspek yang dinilai, valid dari segi kontruksi berdasarkan sepuluh aspek yang dinilai dan valid dari segi bahasa berdasarkan enam aspek yang dinilai dengan skor rata-rata 4,48.Kata Kunci: Validitas, Lembar Kerja Peserta Didik, Discovery Learning ABSTRACTThis research aimed to produce student’s worksheets Based Discovery Learning on Dimentional Figure Rectangular Material at grade VII SMP Negeri 1 Bengkulu Tengah that are valid, practical and effective category. This research was a research and development by adopting procedure of four-D (4D) which was modified into 3D namely define, design, and development phase consisting of validity. Validity instrument were sheet of material sheet, construction sheet, and language sheet. The result of the research showed that LKPD Based Discovery Learning on Dimentional Figure Rectangular Material at  grade VII SMP Negeri 1 Bengkulu Tengah was included in the category being very valid in the eleven aspects of material, being very valid in the ten aspets construction, and being very valid in the six aspects language with average score 4,48Keywords: Validity, student’s Worksheet , Discovery Learning


2008 ◽  
Author(s):  
Richard R. Schultz ◽  
Abderrafi M. Ougouag ◽  
David W. Nigg ◽  
Hans D. Gougar ◽  
Richard W. Johnson ◽  
...  

2015 ◽  
pp. 566-579
Author(s):  
Keyun Ruan

Cloud computing is a major transition, and it comes at a unique historical and strategic time for applying foundational design thinking to secure the next-generation computing infrastructure and enable waves of business and technological innovation. In this chapter, the researcher summarizes six key research and development areas for designing a forensic-enabling cloud ecosystem, including architecture and matrix, standardization and strategy, evidence segregation, security and forensic integration, legal framework, and privacy.


2020 ◽  
Vol 495 (3) ◽  
pp. 3515-3530 ◽  
Author(s):  
A D Cameron ◽  
D Li ◽  
G Hobbs ◽  
L Zhang ◽  
C C Miao ◽  
...  

ABSTRACT We present timing solutions and analyses of 11 pulsars discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). These pulsars were discovered using an ultrawide bandwidth receiver in drift-scan observations made during the commissioning phase of FAST, and were then confirmed and timed using the 64-m Parkes Radio Telescope. Each pulsar has been observed over a span of at least one year. Highlighted discoveries include PSR J0344−0901, which displays mode-changing behaviour and may belong to the class of so-called swooshing pulsars (alongside PSRs B0919+06 and B1859+07); PSR J0803−0942, whose emission is almost completely linearly polarized; and PSRs J1900−0134 and J1945+1211, whose well-defined polarization angle curves place stringent constraints on their emission geometry. We further discuss the detectability of these pulsars by earlier surveys, and highlight lessons learned from our work in carrying out confirmation and monitoring observations of pulsars discovered by a highly sensitive telescope, many of which may be applicable to next-generation pulsar surveys. This paper marks one of the first major releases of FAST-discovered pulsars, and paves the way for future discoveries anticipated from the Commensal Radio Astronomy FAST Survey.


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