scholarly journals Ariel V Sky Survey Instrument: extended observations of 3U 0900-40

1977 ◽  
Vol 178 (4) ◽  
pp. 513-524 ◽  
Author(s):  
M. G. Watson ◽  
R. E. Griffiths
Keyword(s):  
2010 ◽  
Author(s):  
Oliver G. King ◽  
Charles Copley ◽  
Rod Davies ◽  
Richard Davis ◽  
Clive Dickinson ◽  
...  

1976 ◽  
Vol 176 (3) ◽  
pp. 609-620 ◽  
Author(s):  
G. Villa ◽  
C. G. Page ◽  
M. J. L. Turner ◽  
B. A. Cooke ◽  
M. J. Ricketts ◽  
...  

1997 ◽  
Vol 161 ◽  
pp. 611-621
Author(s):  
Guillermo A. Lemarchand ◽  
Fernando R. Colomb ◽  
E. Eduardo Hurrell ◽  
Juan Carlos Olalde

AbstractProject META II, a full sky survey for artificial narrow-band signals, has been conducted from one of the two 30-m radiotelescopes of the Instituto Argentino de Radioastronomía (IAR). The search was performed near the 1420 Mhz line of neutral hydrogen, using a 8.4 million channels Fourier spectrometer of 0.05 Hz resolution and 400 kHz instantaneous bandwidth. The observing frequency was corrected both for motions with respect to three astronomical inertial frames, and for the effect of Earths rotation, which provides a characteristic changing signature for narrow-band signals of extraterrestrial origin. Among the 2 × 1013spectral channels analyzed, 29 extra-statistical narrow-band events were found, exceeding the average threshold of 1.7 × 10−23Wm−2. The strongest signals that survive culling for terrestrial interference lie in or near the galactic plane. A description of the project META II observing scheme and results is made as well as the possible interpretation of the results using the Cordes-Lazio-Sagan model based in interstellar scattering theory.


2014 ◽  
Vol 4 (3) ◽  
pp. 655-661
Author(s):  
Waleed Elsanhoury

Using Sloan Digital Sky Survey SDSS catalog, some intrinsic characteristics of Quasars (10,000 points) are developed of these are the strong correlations between redshifts and other parameters, e.g. combined magnitude, luminosity, and absolute magnitude .Moreover ,the Karlsson peak of our sample is also computed.


Author(s):  
Max Ullrich ◽  
David S. Strong

How undergraduate engineering students define their success and plan for their future differs notably amongst students. With a push for greater diversity and inclusion in engineering schools, it is valuable to also better understand the differences in these areas among different students to allow institutions to better serve the needs of these diverse groups.  The purpose of this research study is to explore students’ definition of success both in the present and projecting forward 5 to 10 years, as well as to understand to what level students reflect on, and plan for, the future. The proposed survey instrument for the pilot stage of this research includes 56 closed-ended questions and 3 open-ended questions. Evidence for the validity of the research instrument is established through a mixed-method pilot study. This paper will discuss the survey instrument, the pilot study, and outline plans for the full study.


2014 ◽  
Vol 1 (4) ◽  
pp. 9-13 ◽  
Author(s):  
Aqeel Ahmed ◽  
Muhammad Sehail Younis

This preliminary study attempts to link among the critical success factors on overall project success in public sector organizations in Pakistan.  In this study it’s reflected that major critical success factors (soundness of Business & workforce, planning & control, quality performance and past performance) can enhance the success of the project in Pakistan.  The purpose of this preliminary study was to verify the reliability of the survey instrument which has been used in European countries. It was found that the planning & control was the highest Cronbach Alpha value, while the ranged for each constructs in the present study from 0.68 to 0.88.  Therefore, based on the Cronbach alpha value score, the proposed survey instrument has fulfilled the basic requirement of a valid instrument.


HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 554c-554
Author(s):  
Sonja M. Skelly ◽  
Jennifer Campbell Bradley

Survey research has a long precedence of use in the social sciences. With a growing interest in the area of social science research in horticulture, survey methodology needs to be explored. In order to conduct proper and accurate survey research, a valid and reliable instrument must be used. In many cases, however, an existing measurement tool that is designed for specific research variables is unavailable thus, an understanding of how to design and evaluate a survey instrument is necessary. Currently, there are no guidelines in horticulture research for developing survey instruments for use with human subjects. This presents a problem when attempting to compare and reference similar research. This workshop will explore the methodology involved in preparing a survey instrument; topics covered will include defining objectives for the survey, constructing questions, pilot testing the survey, and obtaining reliability and validity information. In addition to these topics some examples will be provided which will illustrate how to complete these steps. At the conclusion of this session a discussion will be initiated for others to share information and experiences dealing with creating survey instruments.


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