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2 produkter
852 kr
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Researchers in the natural sciences are faced with problems that require a novel approach to improve the quality of forecasts of processes that are sensitive to environmental conditions. Nonlinearity of a system may significantly complicate the predictability of future states: a small variation of parameters can dramatically change the dynamics, while sensitive dependence of the initial state may severely limit the predictability horizon. Uncertainties also play a role. This volume addresses such problems by using tools from chaos theory and systems theory, adapted for the analysis of problems in the environmental sciences. Sensitive dependence on the initial state (chaos) and the parameters are analyzed using methods such as Lyapunov exponents and Monte Carlo simulation. Uncertainty in the structure and the values of parameters of a model is studied in relation to processes that depend on the environmental conditions. These methods also apply to biology and economics. This text aims to be suitable for research workers at universities and (semi-) governmental institutes for the environment, agriculture, ecology, meteorology and water management, and theoretical economists.
386 kr
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A Different Face of War is a riveting account of one American officer in the Medical Service Corps during the early years of the Vietnam War.Assigned as the senior medical advisor to the Army of the Republic of Vietnam in I Corps, an area close to the DMZ, James G. Van Straten traveled extensively and interacted with military officers and non-commissioned officers, peasant-class farmers, Buddhist bonzes, shopkeepers, scribes, physicians, nurses, the mentally ill, and even political operatives. He sent his wife daily letters from July 1966 through June 1967, describing in impressive detail his experiences, and those letters became the primary source for his memoir.The author describes with great clarity and poignancy the anguish among the survivors when an American cargo plane in bad weather lands short of the Da Nang Air Base runway on Christmas Eve and crashes into a Vietnamese coastal village, killing more than 100 people and destroying their village; the heart-wrenching pleadings of a teenage girl that her shrapnel-ravaged leg not be amputated; and the anger of an American helicopter pilot who made repeated trips into a hot landing zone to evacuate the wounded, only to have the Vietnamese insist that the dead be given a higher priority.