... Troff e Nroff sono programmi di elaborazione e impaginazione testi per la produzione di documenti di qualitЮ che possano essere riprodotti anche attraverso sistemi di stampa elementare, come gli schermi dei terminali a caratteri. ... Troff Х nato nel 1973, scritto in linguaggio assembler per il PDP-11, e successivamente riscritto in C. Oggi Troff fa parte della storia di Unix; per quanto riguarda GNU/Linux e il software libero in generale, ne esiste una realizzazione di GNU: Groff. ... troff | ...
S I E E S COM S SOURCE:MARK E. BAILEY , ILLUSTRATION; PRESTON MORRIGHAN/SCIENCE eyond orbit the most distant planets, Oort cloud known as source comets that reach system. distribution dynamically evolved, ``captured'' comets from cloud been difficult explain. ticular, is a severe number of comets observed in shortperi od orbits that comet Halley. page 2212 issue, Levison et investigate this socalled `` ... Does provide a clue ori cometary material? ... J. H. Oort, Astron. ...
To Solve Dark Matter Problem Without Dark Matter Chongming Xu Lohrmann Observatory, Dresden, Germany In this paper, we point out the main character of dark matter: invisible and dissipationless (or fully transparent) to be the same as the one of the gravitational eld. There are several alternative gravitational theories to revise general relativity and Newtonian law to explain the rotation curve of the spiral galaxies without dark matter. ...
... J. 124, 3270 ( 2002 )] 1 Joris Gerssen and Roeland P. van der Marel Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 Karl ... Carlton Pryor Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 088548019 Received 2002 October 11; accepted 2002 October 11 In Paper II, we reported the existence of a dark and compact mass component near the center of M15 , based on an analysis of new ... 2002). ... BLACK HOLE IN M15. ...
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