Grober Robert (3 results)

Wraps. Condition: Very good. Presumed First Edition, First printing. Quarto, 94, wraps, illus. (some in color), diagrams, glossary, appendix. This is a JASON study, approved for public release, distribution unlimited. Among the contributors was Freeman Dyson.Dr. Paul Dimotakis is the John K. Northrop Professor of Aeronautics and Professor of Applied Physics at Caltech. He earned his Ph.D. in Applied Physics from Caltech. As a member of the Caltech faculty he advanced from Assistant Professor, Associate Professor, and Professor, before being awarded the John K Northrop Chair. He and his co-workers have developed experimental facilities and laser diagnostics, and advances in signal processing, high-speed digital temporal- and image-data acquisition techniques, high-speed CCD imager design, and image-data processing. His research has included hydrodynamic stability, gasdynamic simulations, image-correlation techniques, aerooptics effects, and adaptive optics. JASON is an independent group of elite scientists which advises the United States government on matters of science and technology, mostly of a sensitive nature. The group was first created as a way to get a younger generation of scientists-that is, not the older Los Alamos and MIT Radiation Laboratory alumni-involved in advising the government. It was established in 1960 and has somewhere between 30 and 60 members. Its work first gained public notoriety as the source of the Vietnam War's McNamara Line electronic barrier. Although most of its research is military-focused, JASON also produced early work on the science of global warming and acid rain. Current unclassified research interests include health informatics, cyberwarfare, and renewable energy. For administrative purposes, JASON's activities are run through the MITRE Corporation, a not-for-profit corporation in McLean, Virginia, which operates seven Federally Funded Research and Development Centers (FFRDCs) for the Federal Government of the United States. JASON typically performs most of its work during an annual summer study. Its sponsors include the Department of Defense, the Department of Energy, and the U.S. Intelligence Community. Most of the resulting JASON reports are classified. The name "JASON" is sometimes explained as an acronym, standing either for "July August September October November", the months in which the group would typically meet; or, tongue in cheek, for "Junior Achiever, Somewhat Older Now". However, neither explanation is correct; in fact, the name is not an acronym at all. It is a reference to Jason, a character from Greek mythology. The wife of one of the founders (Mildred Goldberger) thought the name given by the defense department, Project Sunrise, was unimaginative and suggested the group be named for a hero and his search. JASON studies have included a now-mothballed system for communicating with submarines using extremely long radio waves (Project Seafarer, Project Sanguine), an astronomical technique for overcoming the atmosphere's distortion (adaptive optics), the many problems of missile defense, technologies for verifying compliance with treaties banning nuclear tests, a 1979 report describing CO2-driven global warming, and the McNamara Line's electronic barrier, a system of computer-linked sensors developed during the Vietnam War which became the precursor to the modern electronic battlefield.

Wraps. Condition: Very good. 15 pages (per the report documentation page). Wraps. Formulae. Figures. This is a JASON report, Distribution authorized to U.S. Government agencies and their contractors. It is understood that with the passage of time and the general diffusion of knowledge into the public sector that there is no current distribution limitation. JASON is an independent group of elite scientists who advise the United States government on matters of science and technology, mostly of a sensitive nature. The group was created in the aftermath of the Sputnik launch as a way to have the nation's preeminent scientists help the government with defense problems, similar to the way that scientists helped in World War II. It was established in 1960 and has somewhere between 30 and 60 members. Its work first gained public attention as the source of the Vietnam War's McNamara Line electronic barrier. Most of its research is military-focused. It has been estimated that plutonium pits have a minimum lifetime of at least 100 years, and a Lawrence Livermore National Laboratory study found that samples artificially aged to 150 years still performed as designed. This is because the alloy used in modern pits degrades slowly, and independent scientific reviews, including a JASON report, have concluded that most types of pits have a credible lifetime of at least a century. Aging issues are primarily a concern for the plutonium itself, which is stabilized by the addition of a small amount of another material to its alloy to prevent it from degrading. JASON studies (2007 and earlier) concluded that most plutonium pits have a minimum lifetime of at least 100 years. LLNL study (2012): Researchers at Lawrence Livermore National Laboratory found that plutonium samples artificially aged to 150 years continued to perform as designed. They also noted that the aged plutonium continued to "age gracefully" with no unexpected aging issues appearing. Other studies: The National Nuclear Security Administration (NNSA) has a 10-year research plan to further study plutonium pit aging to better predict lifetimes for each nuclear weapon system in the U.S. stockpile, as reported by the U.S. Government Accountability Office. In addition to the plutonium itself, other components of the pit, such as the non-nuclear materials, have also shown remarkable stability over the years. While plutonium pits are not expected to age significantly within the first 100 years, they are still a concern for some officials who believe that 80 or more new pits per year are needed to replace the aging pits in the U.S. arsenal. Presumed First Edition, First printing of this Appendix.

Rústica. Condition: Bueno. 1ª ed. 22x27.5. 87pp. 1h. Profusamente ilustrado. Rústica. . Textos de Joan Simon y David Catalina. Muy buen ejemplar. .