Low strain, long life creep fatigue of AF2-1DA and INCO 718

Two aircraft turbine disk alloys, GATORIZED AF2-DA and INCO 718 were evaluated for their low strain long life creep-fatigue behavior. Static (tensile and creep rupture) and cyclic properties of both alloys were characterized. The cntrolled strain LCF tests were conducted at 760 C (1400 F) and 649 C (1200 F) for AF2-1DA and INCO 718, respectively. Hold times were varied for tensile, compressive and tensile/compressive strain dwell (relaxation) tests. Stress (creep) hold behavior of AF2-1DA was also evaluated. Generally, INCO 718 exhibited more pronounced reduction in cyclic life due to hold than AF2-1DA. The percent reduction in life for both alloys for strain dwell tests was greater at low strain ranges (longer life regime). Changing hold time from 0 to 0.5, 2.0 and 15.0 min. resulted in corresponding reductions in life. The continuous cycle and cyclic/dwell initiation failure mechanism was predominantly transgranular for AF2-1DA and intergranular for INCO 718

Using Markov chain Monte Carlo methods for estimating parameters with gravitational radiation data

We present a Bayesian approach to the problem of determining parameters for coalescing binary systems observed with laser interferometric detectors. By applying a Markov Chain Monte Carlo (MCMC) algorithm, specifically the Gibbs sampler, we demonstrate the potential that MCMC techniques may hold for the computation of posterior distributions of parameters of the binary system that created the gravity radiation signal. We describe the use of the Gibbs sampler method, and present examples whereby signals are detected and analyzed from within noisy data.Comment: 21 pages, 10 figure

Revision of the United Nations Charter and the Development of the Law

Article 109 of the Charter of the United Nations requires that the agenda of the 1955 General Assembly contain a proposal for the establishment of a General Conference to review the present Charter\u27. A Senate Commission was chosen in September, 1953, to study proposals for revision. Secretary of State John Foster Dulles, announcing in August, 1953, that the United States favors holding the conference, said that if we are to have real security we must do those things which U.... are necessary to put international intercourse on a friendly and nonfriction basis. There were serious inadequacies in the Charter which required alteration, he said, one of which arose out of a disregard for the fact that, in the long run, world order depended upon law and justice. He pointed out that the General Assembly has made but little progress in codifying international law, and that the 1955 conference, which ... will be comparable in its importance to the original San Francisco Conference... will provide .... a conspicuous opportunity for which the lawyers of America should be prepared. Mr. Dulles has thus invited the cooperation of American lawyers in implementing present American policy to strengthen the United Nations

Revision of the United Nations Charter and the Development of the Law

Article 109 of the Charter of the United Nations requires that the agenda of the 1955 General Assembly contain a proposal for the establishment of a General Conference to review the present Charter\u27. A Senate Commission was chosen in September, 1953, to study proposals for revision. Secretary of State John Foster Dulles, announcing in August, 1953, that the United States favors holding the conference, said that if we are to have real security we must do those things which U.... are necessary to put international intercourse on a friendly and nonfriction basis. There were serious inadequacies in the Charter which required alteration, he said, one of which arose out of a disregard for the fact that, in the long run, world order depended upon law and justice. He pointed out that the General Assembly has made but little progress in codifying international law, and that the 1955 conference, which ... will be comparable in its importance to the original San Francisco Conference... will provide .... a conspicuous opportunity for which the lawyers of America should be prepared. Mr. Dulles has thus invited the cooperation of American lawyers in implementing present American policy to strengthen the United Nations