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All Articles for Magazine issue 1989 (Volume 20, No. 4)
Year (Volume & No.)TitleAbstractAuthorDownload
1989 (Volume 20, No. 4)Background Astronomy: The Universe's Dark AgesJapanese and American teams are working together to fill in the blanks in the history of the universe between the birth of neutral particles a few years after the Big Bang and the birth of stars and galaxies a few billion years later. The keys are in heretofore hidden regions of the cosmic background radiation. Lee EdsonPDF
1989 (Volume 20, No. 4)Computer Networking: Toward a National Research and Education NetworkBefore a National Research and Education Network permits researchers to collaborate across the continent as easily as they now can across a laboratory, a troublesome array of problems will have to be solved. Exploitation of optical bandwidths, switching at unprecedented speeds, and a tangle of software problem top the list. Target dates and timetables for meeting those challenges are being set today. Bandwidth calculations. Following protocol. Televisualization: a special challenge. People, machines, and information. Susan WintschPDF
1989 (Volume 20, No. 4)Global Change: GLOBAL CHANGE: A two-part special reportOn every front, signals that could reveal a vector of change in global climate remain inextricably buried in background. Efforts intensify to tease out reliable data so that directions and rates of change can be clearly perceived. DETECTING CLIMATE CHANGE I: Taking the world's shifting temperature. DETECTING CLIMATE CHANGE II: The impact of the water budget.Mort LaBrecquePDF
1989 (Volume 20, No. 4)Hotspots: The Roots of Midplate VolcanismHigh on the list of the earth's great remaining riddles are volcanoes where none ought to be. The solution promises answers to a range of geophysical questions.William CromiePDF
1989 (Volume 20, No. 4)No Topic: A Brain (Model) is What a Brain (Model) DoesThe exploration of the things that happen and the things that must happen for a brain to become (or produce) a mind is creating a marriage of equals among the cognitive, neurological, and computational sciences.Ann FinkbeinerPDF


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