979 research outputs found
Ledapoem
Oh, to see him preen — ruffling all his edges, wingtips unfurled, wings wide and spreading; a cool momentary shadow, a settling into place, smoothing black boat thru white foam..
A Procedure to Calibrate a Multi-Modular Telescope
A procedure has been developed for the charge, mass and energy calibration of
ions produced in nuclear heavy ion reactions. The charge and mass
identification are based on a E-E technique. A computer code determines
the conversion from ADC channels into energy values, atomic number and mass of
the detected fragments by comparing with energy loss calculations through a
minimization routine. The procedure does not need prior measurements with beams
of known energy and charge. An application of this technique to the calibration
of the MULTICS apparatus is described.Comment: 9 pages, Tex file, 3 postscript figures available upon request from
[email protected]; to appear in Nucl. Inst. Met
Rigidity of minimal submanifolds in hyperbolic space
We prove that if an -dimensional complete minimal submanifold in
hyperbolic space has sufficiently small total scalar curvature then has
only one end. We also prove that for such there exist no nontrivial
harmonic 1-forms on
Dental School “Research Publication Distribution” in Dental Versus Non-Dental Journals
http://deepblue.lib.umich.edu/bitstream/2027.42/101139/1/2007-IADR-Poster-Bayne.pd
Modular Equations and Distortion Functions
Modular equations occur in number theory, but it is less known that such
equations also occur in the study of deformation properties of quasiconformal
mappings. The authors study two important plane quasiconformal distortion
functions, obtaining monotonicity and convexity properties, and finding sharp
bounds for them. Applications are provided that relate to the quasiconformal
Schwarz Lemma and to Schottky's Theorem. These results also yield new bounds
for singular values of complete elliptic integrals.Comment: 23 page
Relationship of Dental Caries and Fluorosis to Fluoride Supplement History in a Non-Fluoridated Sample of Schoolchildren
A random sample of 206 Michigan children, aged from 9 to 13, were examined for fluorosis from a larger group of 2038 children participating in a dental project. Clinical examinations included caries data (DMFS) and assessment of fluorosis by use of the Tooth Surface Index of Fluorosis (TSIF). Separate examiners were used for each index. The response rate of a questionnaire mailed to parents to gather information on residence histories, use of fluoride supplements, and antibiotics was 78%. The prevalence of fluorosis was about 20% among the respondents. Of the 4868 tooth surfaces examined, 9.2% were affected by fluorosis. In all cases, dental fluorosis was judged as mild, with most occurrences on the posterior teeth. No instances of moderate or severe fluorosis were found. The caries experience of respondents was 1.69 ± 2.73 DMFS. Caries experience does not appear to be significantly related to income, education, or fluoride supplement use. Approximately 52% of respondents were reported to have taken fluoride supplements with various degrees of consistency. Parents' education was positively related to both prevalence of fluorosis (odds ratio = 2.2) and use of fluoride supplements (odds ratio = 2.7). No significant relation was revealed with evidence of fluorosis and use of supplements. This study shows a relatively mild level of dental fluorosis in a sample of children from a non-fluoridated area. Dental fluorosis in this group does not appear to be related to use of fluoride supplements or differences in caries experience.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/66503/2/10.1177_08959374890030021501.pd
Exile Vol. XV No. 1
POETRY
Haiku by John Anderson 2
It\u27s the looking in the mirror by Larry Faso 3
There is a voice in me by Larry Faso 15
We fight along time by Tracy Mac Nab 8
During the night by Tracy Mac Nab 8
Illusion by Phil Cockerille 10
Mexico City \u2759 by Keith McWalter 12
Summer Correspondence II by Lauren Shakely 13
America Sings to Herself and Doesn\u27t Hear by Lauren Shakely 15
eatin crawdads by Bob Martin 14
G. [unattributed*] 16
Finis Coronant Opus [unattributed*] 17
The Droplet Sea by Jeffrey R. Smith 17
The surrounding dismal forest by P. F. Galbraith 18
FICTION
The Shadow in his mind by Cem Mehmet Kozlu 4-7
An Excerpt from a Novel in Progress by Dick Devine 19-22
ARTWORK AND ILLUSTRATIONS
by Tom Robinson 2, 12, 16, 18
by Bob Tauber 3, 8, 15
by Tom King 7, 9, 13
by Ted Hall 11, 24
by Clare Conrad 14
Mislabeled Fall 196
Quantum Corrections to Dilute Bose Liquids
It was recently shown (A. Bulgac. Phys. Rev. Lett. {\bf 89}, 050402 (2002))
that an entirely new class of quantum liquids with widely tunable properties
could be manufactured from bosons (boselets), fermions (fermilets) and their
mixtures (ferbolets) by controlling their interaction properties by the means
of a Feshbach resonance. We extend the previous mean--field analysis of these
quantum liquids by computing the lowest order quantum corrections to the ground
state energy and the depletion of the Bose--Einstein condensate and by
estimating higher order corrections as well. We show that the quantum
corrections are relatively small and controlled by the diluteness parameter
, even though strictly speaking in this case there is no
low density expansion.Comment: final published version, typos corrected, updated references and
added one referenc
Detection methods for non-Gaussian gravitational wave stochastic backgrounds
We address the issue of finding an optimal detection method for a
discontinuous or intermittent gravitational wave stochastic background. Such a
signal might sound something like popcorn popping. We derive an appropriate
version of the maximum likelihood detection statistic, and compare its
performance to that of the standard cross-correlation statistic both
analytically and with Monte Carlo simulations. The maximum likelihood statistic
performs better than the cross-correlation statistic when the background is
sufficiently non-Gaussian. For both ground and space based detectors, this
results in a gain factor, ranging roughly from 1 to 3, in the minimum
gravitational-wave energy density necessary for detection, depending on the
duty cycle of the background. Our analysis is exploratory, as we assume that
the time structure of the events cannot be resolved, and we assume white,
Gaussian noise in two collocated, aligned detectors. Before this detection
method can be used in practice with real detector data, further work is
required to generalize our analysis to accommodate separated, misaligned
detectors with realistic, colored, non-Gaussian noise.Comment: 25 pages, 12 figures, submitted to physical review D, added revisions
in response to reviewers comment
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