1,301 research outputs found
Ancient Egypt 1922 Part 4
Part 4 of the 1922 Ancient Egypt books. Contents include the Shellal mosaic, Old World cubit in America, the Constantinople obelisk, the rise of prices in Egypt, dualism in African religions, and Egyptian mathematics.https://knowledge.e.southern.edu/kweeks_coll/1021/thumbnail.jp
Ancient Egypt 1923 Part 1
Part 1 of the 1923 Ancient Egypt books. Contents include a portrait of Menkaura, the magic skin, and customs at childbirth.https://knowledge.e.southern.edu/kweeks_coll/1022/thumbnail.jp
Ancient Egypt 1916 Part 2
Part 2 of the 1916 Ancient Egypt books. Contents include the Gorringe collection, an early figure of Taurt, Egypt in the Grail Romance, and the queenly title, XXIInd dynasty.https://knowledge.e.southern.edu/kweeks_coll/1006/thumbnail.jp
Ancient Egypt 1921 Part 2
Part 2 of the 1921 Ancient Egypt books. Contents include the British school in Egypt, origins of some signs, borders of lotus and grapes, the head of a barbarian, the transmission of history, and a cartouche of Augustus.https://knowledge.e.southern.edu/kweeks_coll/1015/thumbnail.jp
Ancient Egypt 1916 Part 4
Part 4 of the 1916 Ancient Egypt books. Contents include Sir Gaston Maspero, King Zet (XXIIIrd dynasty), funeral figures, Egyptology in France, origin of polychrome borders, and a cemetery portal.https://knowledge.e.southern.edu/kweeks_coll/1008/thumbnail.jp
Ancient Egypt 1923 Part 2
Part 2 of the 1923 Ancient Egypt books. Contents include the tomb at Byblos, a tomb with Aramaic inscriptions, the British school at Qau, the magic skin, Apries and the possibility of royal blood, and obelisks at Pylon VII.https://knowledge.e.southern.edu/kweeks_coll/1023/thumbnail.jp
Ancient Egypt 1916 Part 3
Part 3 of the 1916 Ancient Egypt books. Contents include early forms of the cross, cutting granite, new portions of the annals, and the temple of Rameses, Abydos.https://knowledge.e.southern.edu/kweeks_coll/1007/thumbnail.jp
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Validation of KENO V.a Comparison with Critical Experiments
Section 1 of this report documents the validation of KENO V.a against 258 critical experiments. Experiments considered were primarily high or low enriched uranium systems. The results indicate that the KENO V.a Monte Carlo Criticality Program accurately calculates a broad range of critical experiments. A substantial number of the calculations showed a positive or negative bias in excess of 1 1/2% in k-effective (k{sub eff}). Classes of criticals which show a bias include 3% enriched green blocks, highly enriched uranyl fluoride slab arrays, and highly enriched uranyl nitrate arrays. If these biases are properly taken into account, the KENO V.a code can be used with confidence for the design and criticality safety analysis of uranium-containing systems. Section 2 of this report documents the results of investigation into the cause of the bias observed in Sect. 1. The results of this study indicate that the bias seen in Sect. 1 is caused by code bias, cross-section bias, reporting bias, and modeling bias. There is evidence that many of the experiments used in this validation and in previous validations are not adequately documented. The uncertainty in the experimental parameters overshadows bias caused by the code and cross sections and prohibits code validation to better than about 1% in k{sub eff}
Euclidean Supergravity in Terms of Dirac Eigenvalues
It has been recently shown that the eigenvalues of the Dirac operator can be
considered as dynamical variables of Euclidean gravity. The purpose of this
paper is to explore the possiblity that the eigenvalues of the Dirac operator
might play the same role in the case of supergravity. It is shown that for this
purpose some primary constraints on covariant phase space as well as secondary
constraints on the eigenspinors must be imposed. The validity of primary
constraints under covariant transport is further analyzed. It is show that in
the this case restrictions on the tanget bundle and on the spinor bundle of
spacetime arise. The form of these restrictions is determined under some
simplifying assumptions. It is also shown that manifolds with flat curvature of
tangent bundle and spinor bundle and spinor bundle satisfy these restrictons
and thus they support the Dirac eigenvalues as global observables.Comment: Misprints and formulae corrected; to appear in Phys. Rev.
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