Space shuttle avionics system

The Space Shuttle avionics system, which was conceived in the early 1970's and became operational in the 1980's represents a significant advancement of avionics system technology in the areas of systems and redundacy management, digital data base technology, flight software, flight control integration, digital fly-by-wire technology, crew display interface, and operational concepts. The origins and the evolution of the system are traced; the requirements, the constraints, and other factors which led to the final configuration are outlined; and the functional operation of the system is described. An overall system block diagram is included

KEPLER's First Rocky Planet: Kepler-10b

NASA's Kepler Mission uses transit photometry to determine the frequency of earth-size planets in or near the habitable zone of Sun-like stars. The mission reached a milestone toward meeting that goal: the discovery of its first rocky planet, Kepler-10b. Two distinct sets of transit events were detected: 1) a 152 +/- 4 ppm dimming lasting 1.811 +/- 0.024 hours with ephemeris T[BJD]=2454964.57375+N*0.837495 days and 2) a 376 +/- 9 ppm dimming lasting 6.86 +/- 0.07 hours with ephemeris T[BJD]=2454971.6761+N*45.29485 days. Statistical tests on the photometric and pixel flux time series established the viability of the planet candidates triggering ground-based follow-up observations. Forty precision Doppler measurements were used to confirm that the short-period transit event is due to a planetary companion. The parent star is bright enough for asteroseismic analysis. Photometry was collected at 1-minute cadence for >4 months from which we detected 19 distinct pulsation frequencies. Modeling the frequencies resulted in precise knowledge of the fundamental stellar properties. Kepler-10 is a relatively old (11.9 +/- 4.5 Gyr) but otherwise Sun-like Main Sequence star with Teff=5627 +/- 44 K, Mstar=0.895 +/- 0.060 Msun, and Rstar=1.056 +/- 0.021 Rsun. Physical models simultaneously fit to the transit light curves and the precision Doppler measurements yielded tight constraints on the properties of Kepler-10b that speak to its rocky composition: Mpl=4.56 +/- 1.29 Mearth, Rpl=1.416 +/- 0.036 Rearth, and density=8.8 +/- 2.9 gcc. Kepler-10b is the smallest transiting exoplanet discovered to date.Comment: Accepted, Astrophysical Journal, November 25, 2010; Eexpected publication date: February 20, 201

The Fundamentals : a testimony to the truth (1917) Vol. 2

The inspiration of the Bible - definition, estent and proof / Rev. James M. Gray Inspiration / L.W. Munhall The moral glory of Jesus Christ, a proof of inspiration / Rev. William G. Moorehead The testimony of the scriptures to themselves / Rev. George S. Bishop Testimony of the organic unity of the Bible to its inspiration / Arthur T. Pierson Fulfilled prophecy a potent argument for the Bible / Arno C. Gaebelein Life in the word / Philip Mauro Is there a God? . Rev. Thomas Whitelaw God in Christ the only revelation of the fatherhood of God / Robert E. Speer The deity of Christ / Prof. Benjamin B. Warfield The virgin birth of Christ / Rev. Prof. James Orr The God-man / John Stock The person and work of Jesus Christ / Bishop Nuelsen The certainity and importance of the bodily resurrection of Jesus Christ from the dead / R.A. Torrey The personality and deity of the Holy Spirit / R.A. Torrey The Holy Spirit and the sons of God / Rev. W.J. Erdman Observations on the conversion and apostleship of St.. Paul / Lord Lyttelton Christianity no fable / Rev. Thomas Whitelawhttps://digitalcommons.biola.edu/the-fundamentals/1013/thumbnail.jp