Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Faculty Publications

Discipline
Institution
Keyword
Publication Year
File Type

Articles 15091 - 15120 of 16764

Full-Text Articles in Entire DC Network

The Effect Of Criminal Conduct Upon Refugee And Asylum Status, Evangeline G. Abriel Jan 1996

The Effect Of Criminal Conduct Upon Refugee And Asylum Status, Evangeline G. Abriel

Faculty Publications

No abstract provided.


More Justice For Less Money, David D. Friedman Jan 1996

More Justice For Less Money, David D. Friedman

Faculty Publications

No abstract provided.


High-Multiplicity Lead-Lead Interactions At 158 Gev/C Per Nucleon, P. Deines-Jones, M. L. Cherry, A. Dabrowska, R. Holynski, W. V. Jones, E. D. Kolganova, D. Kudzia, B. S. Nilsen, A. Olszewski, E. A. Pozharova, K. Sengupta, M. Szarska, A. Trzupek, C. J. Waddington, J. P. Wefel, B. Wilczynska, H. Wilczynski, W. Wolter, B. Wosiek, K. Wozniak Jan 1996

High-Multiplicity Lead-Lead Interactions At 158 Gev/C Per Nucleon, P. Deines-Jones, M. L. Cherry, A. Dabrowska, R. Holynski, W. V. Jones, E. D. Kolganova, D. Kudzia, B. S. Nilsen, A. Olszewski, E. A. Pozharova, K. Sengupta, M. Szarska, A. Trzupek, C. J. Waddington, J. P. Wefel, B. Wilczynska, H. Wilczynski, W. Wolter, B. Wosiek, K. Wozniak

Faculty Publications

The Krakow-Louisiana-Minnesota-Moscow Collaboration (KLMM) has exposed a set of emulsion chambers with lead targets to a 158 GeV/c per nucleon beam of 208Pb nuclei, and we report the initial analysis of 40 high-multiplicity Pb-Pb collisions. To test the validity of the superposition model of nucleus-nucleus interactions in this new regime, we compare the shapes of the pseudorapidity distributions with FRITIOF Monte Carlo model calculations, and find close agreement for even the most central events. We characterize head-on collisions as having a mean multiplicity of 1550± 120 and a peak pseudorapidity density of 390± 30. These estimates are significantly lower than …


The Peak Brightness Of Sn 1960f In Ngc 4496 And The Hubble Constant, Bradley E. Schaefer Jan 1996

The Peak Brightness Of Sn 1960f In Ngc 4496 And The Hubble Constant, Bradley E. Schaefer

Faculty Publications

The light curve of the Type Ia supernova SN1960F (in NGC 4496) is important because the Bubble Space Telescope has measured the distance to the host galaxy by means of Cepheid variables, and thus the Hubble constant can be derived. Important parameters in this derivation include the peak magnitude as well as the decline rate of the supernova. In this Letter, I report on the results of my quantitative light-curve template fitting to all published data. These reported data are widely discrepant yet can be made all consistent after the brightnesses of the comparison stars are brought onto the Johnson …


Measurement Of Elastic Ω Photoproduction At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasiński, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam Jan 1996

Measurement Of Elastic Ω Photoproduction At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasiński, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam

Faculty Publications

No abstract provided.


Evidence For Neutrino Oscillations From Muon Decay At Rest, C. Athanassopoulos, L. B. Auerbach, R. L. Burman, I. Cohen, D. O. Caldwell, B. D. Dieterle, J. B. Donahue, A. M. Eisner, A. Fazely, F. J. Federspiel, G. T. Garvey, M. Gray, R. M. Gunasingha, R. Imlay, K. Johnston, H. J. Kim, W. C. Louis, R. Majkic, J. Margulies, K. Mcilhany, W. Metcalf, G. B. Mills, R. A. Reeder, V. Sandberg, D. Smith, I. Stancu, W. Strossman, R. Tayloe, G. J. Vandalen, W. Vernon, N. Wadia, J. Waltz, Y. X. Wang Jan 1996

Evidence For Neutrino Oscillations From Muon Decay At Rest, C. Athanassopoulos, L. B. Auerbach, R. L. Burman, I. Cohen, D. O. Caldwell, B. D. Dieterle, J. B. Donahue, A. M. Eisner, A. Fazely, F. J. Federspiel, G. T. Garvey, M. Gray, R. M. Gunasingha, R. Imlay, K. Johnston, H. J. Kim, W. C. Louis, R. Majkic, J. Margulies, K. Mcilhany, W. Metcalf, G. B. Mills, R. A. Reeder, V. Sandberg, D. Smith, I. Stancu, W. Strossman, R. Tayloe, G. J. Vandalen, W. Vernon, N. Wadia, J. Waltz, Y. X. Wang

Faculty Publications

A search for ν̄μ→ν̄e oscillations has been conducted at the Los Alamos Meson Physics Facility using ν̄μ from μ+ decay at rest. The ν̄e are detected via the reaction ν̄ep→e+n, correlated with the 2.2 MeV γ from np→dγ. The use of tight cuts to identify e+ events with correlated γ rays yields 22 events with e+ energy between 36 and 60 MeV and only 4.6±0.6 background events. The probability that this excess is due entirely to a statistical fluctuation is 4.1×10-8. A χ2 fit to the entire e+ sample results in a total excess of 51.0+20.2-19.5±8.0 events with e+ energy …


Inclusive Charged Particle Distributions In Deep Inelastic Scattering Events At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari, A. Polini, G. Sartorelli Jan 1996

Inclusive Charged Particle Distributions In Deep Inelastic Scattering Events At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari, A. Polini, G. Sartorelli

Faculty Publications

A measurement of inclusive charged particle distributions in deep inelastic ep scattering for γ*p centre-of-mass energies 75 < W < 175 GeV and momentum transfer squared 10 < Q2 < 160 GeV2 from the ZEUS detector at HERA is presented. The differential charged particle rates in the γ*p centre-of-mass system as a function of the scaled longitudinal momentum, xF, and of the transverse momentum, pt* and , as a function of xF, W and Q2 are given. Separate distributions are shown for events with (LRG) and without (NRG) a rapidity gap with respect to the proton direction. The data are compared with results from experiments at lower beam energies, with the naive quark parton model and with parton models including perturbative QCD corrections. The comparison shows the importance of the higher order QCD processes. Significant differences of the inclusive charged particle rates between NRG and LRG events at the same W are observed. The value of for LRG events with a hadronic mass MX, which excludes the forward produced baryonic system, is similar to the


Measurement Of The Diffractive Cross Section In Deep Inelastic Scattering, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari Jan 1996

Measurement Of The Diffractive Cross Section In Deep Inelastic Scattering, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari

Faculty Publications

Diffractive scattering of γ∗p → X + N, where N is either a proton or a nucleonic system with MN < 4 GeV has been measured in deep inelastic scattering (DIS) at HERA. The cross section was determined by a novel method as a function of the γ∗p c.m. energy W between 60 and 245 GeV and of the mass MX of the system X up to 15 GeV at average Q2 values of 14 and 31 GeV2. The diffractive cross section dσdi f f /dMX is, within errors, found to rise linearly with W. Parameterizing the W dependence by the form dσdi f f /dMX ∞ (W2)(2αIP - 2) the DIS data yield for the pomeron trajectory αIP = 1.23±0.02(stat)±0.04(syst) averaged over t in the measured kinematic range assuming the longitudinal photon contribution to be zero. This value for the pomeron trajectory is substantially larger than αIP extracted from soft interactions. The value of αIP measured in this analysis suggests that a substantial part of the diffractive DIS cross section originates from processes which can be described by perturbative QCD. From the measured diffractive cross sections the diffractive structure function of the proton F2D(3) (β,Q2, xIP) has been determined, where β is the momentum fraction of the struck quark in the pomeron. The form F2D(3) = constant·(1/xIP)a gives a good fit to the data in all β and Q2 intervals with a = 1.46 ± 0.04(stat) ± 0.08(syst).


Measurement Of The F2 Structure Function In Deep Inelastic E+P Scattering Using 1994 Data From The Zeus Detector At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam Jan 1996

Measurement Of The F2 Structure Function In Deep Inelastic E+P Scattering Using 1994 Data From The Zeus Detector At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasinski, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam

Faculty Publications

We present measurements of the structure function F2 in e+p scattering at HERA in the range 3.5 GeV2 < Q2 < 5000 GeV2. A new reconstruction method has allowed a significant improvement in the resolution of the kinematic variables and an extension of the kinematic region covered by the experiment. At Q2 < 35 GeV2 the range in x now spans 6.3 · 10-5 < x < 0.08 providing overlap with measurements from fixed target experiments. At values of Q2 above 1000 GeV2 the x range extends to 0.5. Systematic errors below 5% have been achieved for most of the kinematic region. The structure function rises as x decreases; the rise becomes more pronounced as Q2 increases. The behaviour of the structure function data is well described by next-to-leading order perturbative QCD as implemented in the DGLAP evolution equations. © Springer-Verlag 1996.


The Allegro Gravitational Wave Detector: Data Acquisition And Analysis, E. Mauceli, Z. K. Geng, W. O. Hamilton, W. W. Johnson, S. Merkowitz, A. Morse, B. Price, N. Solomonson Jan 1996

The Allegro Gravitational Wave Detector: Data Acquisition And Analysis, E. Mauceli, Z. K. Geng, W. O. Hamilton, W. W. Johnson, S. Merkowitz, A. Morse, B. Price, N. Solomonson

Faculty Publications

We discuss the data acquisition and analysis procedures used on the Allegro gravity wave detector, including a full description of the filtering used for bursts of gravity waves. The uncertainties introduced into timing and signal strength estimates due to stationary noise are measured, giving the windows for both quantities in coincidence searches. © 1996 The American Physical Society.


Preliminary Results From The Russian-American Gallium Experiment Cr-Neutrino Source Measurement, S. R. Elliott, J. N. Abdurashitov, T. J. Bowles, M. L. Cherry, B. T. Cleveland, T. Daily, R. Davis, V. N. Gavrin, S. V. Girin, V. V. Gorbatschev, A. O. Gusev, A. V. Kalikhov, N. G. Khairnasov, V. N. Karaulov, T. V. Knodel, V. N. Kornoukhov, Yu S. Khomyakov, K. Lande, C. K. Lee, V. L. Levitin, V. I. Maev, I. N. Mirmov, P. I. Nazarenko, J. S. Nico, A. M. Pshukov, A. M. Shalagin, A. A. Shikhin, V. S. Shkol'nik, N. V. Skorikov, W. A. Teasdale, E. P. Veretenkin, V. M. Vermul, D. L. Wark Jan 1996

Preliminary Results From The Russian-American Gallium Experiment Cr-Neutrino Source Measurement, S. R. Elliott, J. N. Abdurashitov, T. J. Bowles, M. L. Cherry, B. T. Cleveland, T. Daily, R. Davis, V. N. Gavrin, S. V. Girin, V. V. Gorbatschev, A. O. Gusev, A. V. Kalikhov, N. G. Khairnasov, V. N. Karaulov, T. V. Knodel, V. N. Kornoukhov, Yu S. Khomyakov, K. Lande, C. K. Lee, V. L. Levitin, V. I. Maev, I. N. Mirmov, P. I. Nazarenko, J. S. Nico, A. M. Pshukov, A. M. Shalagin, A. A. Shikhin, V. S. Shkol'nik, N. V. Skorikov, W. A. Teasdale, E. P. Veretenkin, V. M. Vermul, D. L. Wark

Faculty Publications

The Russian-American Gallium Experiment has been collecting solar neutrino data since early 1990. The flux measurement of solar neutrinos is well below that expected from solar models. We discuss the initial results of a measurement of experimental efficiencies by exposing the gallium target to neutrinos from an artificial source. The capture rate of neutrinos from this source is very close to that which is expected. The result can be expressed as a ratio of the measured capture rate to the anticipated rate from the source activity. This ratio is 0.93 + 0.15, - 0.17 where the systematic and statistical errors …


The Macho Project Large Magellanic Cloud Variable Star Inventory. Iv. New R Coronae Borealis Stars, C. Alcock, R. A. Allsman, D. R. Alves, T. S. Axelrod, A. Decker, D. P. Bennett, G. C. Clayton, K. H. Cook, K. C. Freeman, K. Griest, J. A. Guern, D. Kilkenny, M. J. Lehner, S. L. Marshall, D. Minniti, B. A. Peterson, M. R. Pratt, P. J. Quinn, A. W. Rodgers, C. W. Stubbs, W. Sutherland, D. Welch Jan 1996

The Macho Project Large Magellanic Cloud Variable Star Inventory. Iv. New R Coronae Borealis Stars, C. Alcock, R. A. Allsman, D. R. Alves, T. S. Axelrod, A. Decker, D. P. Bennett, G. C. Clayton, K. H. Cook, K. C. Freeman, K. Griest, J. A. Guern, D. Kilkenny, M. J. Lehner, S. L. Marshall, D. Minniti, B. A. Peterson, M. R. Pratt, P. J. Quinn, A. W. Rodgers, C. W. Stubbs, W. Sutherland, D. Welch

Faculty Publications

We report the discovery of two new R Coronae Borealis (RGB) stars in the LMC using the MACHO project photometry database. The identification of both stars has been confirmed spectroscopically. One is a cool RGB star (Teff ∼ 5000 K), characterized by very strong Swan bands of C2 and violet bands of CN, and weak or absent Bahner lines, G band, and 12C13C bands. The second star is an example of a hot RGB star, of which only three were previously known to exist in the Galaxy and none in the LMC. Its spectrum is characterized by several G n …


Lattice Dynamics Of Ii-Vi Materials Using The Adiabatic Bond-Charge Model, B. Rajput, D. Browne Jan 1996

Lattice Dynamics Of Ii-Vi Materials Using The Adiabatic Bond-Charge Model, B. Rajput, D. Browne

Faculty Publications

We extend the adiabatic bond-charge model, originally developed for group IV semiconductors and III-V compounds, to study phonons in more ionic II-VI compounds with a zinc-blende structure. Phonon spectra, density of states, and specific heats are calculated for six II-VI compounds and compared with both experimental data and the results of other models. We show that the six-parameter bond-charge model gives a good description of the lattice dynamics of these materials. We also discuss trends in the parameters with respect to the ionicity and metallicity of these compounds. © 1996 The American Physical Society.


First-Principles Lcgo Calculation Of The Magneto-Optical Properties Of Nickel And Iron, Neeraj Mainkar, D. Browne, J. Callaway Jan 1996

First-Principles Lcgo Calculation Of The Magneto-Optical Properties Of Nickel And Iron, Neeraj Mainkar, D. Browne, J. Callaway

Faculty Publications

We report a first-principles, self-consistent, all-electron, linear combination of Gaussian orbitals calculation of a comprehensive collection of magneto-optical properties of nickel and iron based on density-functional theory. Among the many magneto-optical effects, we have studied the equatorial Kerr effect for absorption in the optical as well as soft-x-ray region, where it is called x-ray magnetic linear dichroism. In the optical region the effect is of the order of 2% while in the x-ray region it is of the order of 1% for the incident angles considered. In addition, the polar Kerr effect, x-ray magnetic circular dichroism, and total x-ray absorption …


The Russian-American Gallium Experiment (Sage) Cr Neutrino Source Measurement, J. N. Abdurashitov, V. N. Gavrin, S. V. Girin, V. V. Gorbachev, T. V. Ibragimova, A. V. Kalikhov, N. G. Khairnasov, T. V. Knodel, V. N. Kornoukhov, I. N. Mirmov, A. A. Shikhin, E. P. Veretenkin, V. M. Vermul, V. E. Yants, G. T. Zatsepin, T. J. Bowles, J. S. Nico, W. A. Teasdale, D. L. Wark, M. L. Cherry, V. N. Karaulov, V. L. Levitin, V. I. Maev, P. I. Nazarenko, V. S. Shkol-Nik, N. V. Skorikov, B. T. Cleveland, T. Daily, R. Davis, K. Lande, C. K. Lee, P. W. Wildenhain, Y. U.S. Khomyakov Jan 1996

The Russian-American Gallium Experiment (Sage) Cr Neutrino Source Measurement, J. N. Abdurashitov, V. N. Gavrin, S. V. Girin, V. V. Gorbachev, T. V. Ibragimova, A. V. Kalikhov, N. G. Khairnasov, T. V. Knodel, V. N. Kornoukhov, I. N. Mirmov, A. A. Shikhin, E. P. Veretenkin, V. M. Vermul, V. E. Yants, G. T. Zatsepin, T. J. Bowles, J. S. Nico, W. A. Teasdale, D. L. Wark, M. L. Cherry, V. N. Karaulov, V. L. Levitin, V. I. Maev, P. I. Nazarenko, V. S. Shkol-Nik, N. V. Skorikov, B. T. Cleveland, T. Daily, R. Davis, K. Lande, C. K. Lee, P. W. Wildenhain, Y. U.S. Khomyakov

Faculty Publications

The solar neutrino capture rate measured by SAGE is well below that predicted by solar models. To check the overall experimental efficiency, we exposed 13 tonnes of Ga metal to a reactor-produced 517 kCi source of 51Cr. The ratio of the measured production rate to that predicted from the source activity is 0.95+/-0.11\(stat\)+0.05/-0.08\(syst\). This agreement verifies that the experimental efficiency is measured correctly, establishes that there are no unknown systematic errors at the 10% level, and provides considerable evidence for the reliability of the solar neutrino measurement. © 1996 The American Physical Society.


Isotopic Evolution Of The Tonga Arc During Lau Basin Rifting; Evidence From The Volcaniclastic Record, Peter D. Clift, Pieter Z. Vroon Jan 1996

Isotopic Evolution Of The Tonga Arc During Lau Basin Rifting; Evidence From The Volcaniclastic Record, Peter D. Clift, Pieter Z. Vroon

Faculty Publications

New Pb, Sr and Nd isotope data from volcaniclastic sediments recovered from the Tonga forearc and Lau Basin permit the isotopic evolution of a section of this arc system, next to the modern island of Ata, to be traced through the backarc basin rifting process from 7·0 Ma to the present. The new data suggest that the isotopic character of the mantle wedge remains constant, and of Pacific mid-ocean ridge basalt (MORB) character, during the early rifting phase. The isotopic evidence supports trace element data in showing an increase in the sediment contribution to arc petrogenesis about 2-3 m.y. after …


Effect Of Mutations On The Sensitivity Of Human Beta-Cell Glucokinase To Liver Regulatory Protein, M. Veiga-Da-Cunha, L. Z. Xu, Y. H. Lee, D. Marotta, S. J. Pilkis, E. Van Schaftingen Jan 1996

Effect Of Mutations On The Sensitivity Of Human Beta-Cell Glucokinase To Liver Regulatory Protein, M. Veiga-Da-Cunha, L. Z. Xu, Y. H. Lee, D. Marotta, S. J. Pilkis, E. Van Schaftingen

Faculty Publications

Human beta-cell glucokinase and its liver counterpart displayed a half-saturating concentration of glucose (S0.5) of about 8 mmol/l and a Hill coefficient of 1.7, and were as sensitive to inhibition by the rat liver regulatory protein as the rat liver enzyme. These results indicate that the N-terminal region of glucokinase, which differs among these three enzymes, is not implicated in the recognition of the regulatory protein. They also suggest that the regulatory protein, or a related protein, could modulate the affinity of glucokinase for glucose in beta cells. We have also tested the effect of several mutations, many of which …


Relationship Between Birth Weight And Awake Blood Pressure In Children And Adolescents In Absence Of Intrauterine Growth Retardation, Empar Lurbe, Josep Redon, Vicente Alvarez, Ramon Durazo, Ana Gomez, Jose Tacons, Richard S. Cooper Jan 1996

Relationship Between Birth Weight And Awake Blood Pressure In Children And Adolescents In Absence Of Intrauterine Growth Retardation, Empar Lurbe, Josep Redon, Vicente Alvarez, Ramon Durazo, Ana Gomez, Jose Tacons, Richard S. Cooper

Faculty Publications

This study was designed to examine the relationship between birth weight (BW) and ambulatory blood pressure in children and adolescents, born at term in absence of intrauterine growth retardation. Twenty-four hour ambulatory blood pressure monitoring (ABPM) was performed on 332 children (150 boys), aged from 6 to 16 years. Subjects were stratified by BW tertiles and age. ABPM was performed using SpaceLabs 90207 monitor during a regular school day. Blood pressure (BP) was measured every 20 min from 06:00 to 24:00, and thereafter every 30 min. Means of systolic BP (SBP) and diastolic BP (DBP) during 24 h, daytime (08:00 …


Multigrid Methods For Parameter Dependent Problems, Susanne C. Brenner Jan 1996

Multigrid Methods For Parameter Dependent Problems, Susanne C. Brenner

Faculty Publications

Multigrid methods for parameter dependent problems are discussed. The contraction numbers of the algorithms are proved within a unifying framework to be bounded away from one, independent of the parameter and the mesth levels. Examples include the pure displacement and pure traction boundary value problems in planar linear elasticity, the Timoshenko beam problem, and the Reissner-Mindlin plate problem.


Rigorous Solution Of The Quantum Einstein Equations, Rodolfo Gambini, Jorge Pullin Jan 1996

Rigorous Solution Of The Quantum Einstein Equations, Rodolfo Gambini, Jorge Pullin

Faculty Publications

We show that the second coefficient of the Conway knot polynomial is annihilated by the Hamiltonian constraint of canonically quantized general relativity in the loop representation. The calculations are carried out in a fully regularized lattice framework. Crucial to the calculation is the explicit form of the skein relations of the second coefficient, which relate it to the Gauss linking number. Contrary to the lengthy formal continuum calculation, the rigorous lattice version can be summarized in a few pictures. © 1996 The American Physical Society.


Analytic Approximations To The Spacetime Of A Critical Gravitational Collapse, Richard H. Price, Jorge Pullin Jan 1996

Analytic Approximations To The Spacetime Of A Critical Gravitational Collapse, Richard H. Price, Jorge Pullin

Faculty Publications

We present analytic expressions that approximate the behavior of the spacetime of a collapsing spherically symmetric scalar field in the critical regime first discovered by Choptuik. We find that the critical region of spacetime can usefully be divided into a "quiescent," an "oscillatory," and a moving "transition" region. We find that in the quiescent and oscillatory regions the critical solution can be well approximated by a flat spacetime scalar field solution. A qualitative nonlinear matching of the solutions across the transition region yields the right order of magnitude for the oscillations of the discretely self-similar critical solution found by Choptuik. …


Colliding Black Holes: How Far Can The Close Approximation Go?, Reinaldo J. Gleiser, Carlos O. Nicasio, Richard H. Price, Jorge Pullin Jan 1996

Colliding Black Holes: How Far Can The Close Approximation Go?, Reinaldo J. Gleiser, Carlos O. Nicasio, Richard H. Price, Jorge Pullin

Faculty Publications

We study the head-on collision of two equal-mass momentarily stationary black holes, using black hole perturbation theory up to second order. Compared to first-order results, this significantly improves agreement with numerically computed wave forms and energy. Much more important, second-order results correctly indicate the range of validity of perturbation theory. This use of second-order corrections to provide “error bars” to the first-order results makes perturbation theory a viable tool for providing benchmarks for numerical relativity in more generic collisions and, in some range of collision parameters, for supplying wave form templates for gravitational wave detection. © 1996 The American Physical …


Detachment Force And Fruit Characteristics Of Tabasco Pepper At Several Stages Of Development, Carl E. Motsenbocker Jan 1996

Detachment Force And Fruit Characteristics Of Tabasco Pepper At Several Stages Of Development, Carl E. Motsenbocker

Faculty Publications

Field and greenhouse studies examined the fruit detachment force (FDF) and fruit and pedicel characteristics of two lines of tabasco pepper (Capsicum frutescens L.) at several stages of maturity. The detachment force of red-mature 'McIlhenny Select' fruit at the calyx-fruit detachment area was lower than that of less mature fruit stages. The force required to detach red-mature Hard Pick (HP) tabasco fruit was higher than that of red-mature 'McIlhenny Select' fruit in the field and greenhouse. The fruit detachment force of red field-grown HP fruit was higher, and in the greenhouse was lower, than that of green or breaker fruit. …


Indecent Proposals: Reason, Restraint And Responsibility In The Regulation Of Indecency, Allen S. Hammond Iv Jan 1996

Indecent Proposals: Reason, Restraint And Responsibility In The Regulation Of Indecency, Allen S. Hammond Iv

Faculty Publications

No abstract provided.


Missouri V. Jenkins And The De Facto Abandonment Of Court-Enforced Desegregation, Bradley W. Joondeph Jan 1996

Missouri V. Jenkins And The De Facto Abandonment Of Court-Enforced Desegregation, Bradley W. Joondeph

Faculty Publications

No abstract provided.


Mothers Who Kill: Coming To Terms With Modern American Infanticide, Michelle Oberman Jan 1996

Mothers Who Kill: Coming To Terms With Modern American Infanticide, Michelle Oberman

Faculty Publications

No abstract provided.


Medical Advocates: A Call For A New Profession, Maxwell J. Mehlman Jan 1996

Medical Advocates: A Call For A New Profession, Maxwell J. Mehlman

Faculty Publications

No abstract provided.


Model Codes And Tax Technical Assistance: Note On The Revised Edition Of The Basic World Tax Code And Commentary, Richard K. Gordon Jan 1996

Model Codes And Tax Technical Assistance: Note On The Revised Edition Of The Basic World Tax Code And Commentary, Richard K. Gordon

Faculty Publications

No abstract provided.


The Psychological Status Of Phonological Analyses, David Eddington Jan 1996

The Psychological Status Of Phonological Analyses, David Eddington

Faculty Publications

This paper casts doubt on the psychological relevance of many phonological analyses. There are four reasons for this: 1) theoretical adequacy does not necessarily imply psychological significance; 2) most approaches are nonempirical in that they are not subject to potential spatiotemporal falsification; 3) phonological analyses are established with little or no recourse to the speakers of the language via experimental psychology; 4) the limited base of evidence which most analyses are founded on is further cause for skepticism.


Conversion Of Coal Tar To Soot During Coal Pyrolysis In A Post-Flame Environment, Thomas H. Fletcher, Jinliang Ma, Brent W. Webb Jan 1996

Conversion Of Coal Tar To Soot During Coal Pyrolysis In A Post-Flame Environment, Thomas H. Fletcher, Jinliang Ma, Brent W. Webb

Faculty Publications

Coal pyrolysis experiments were performed in the postflame region of a CH4/H2/air flat-flame burner operating under fuel-rich conditions, where the temperature and gas compositions were similar to those in the near-burner region of a large-scale coal-fired furnace. Volatiles released from the coal particles formed a cloud of soot particles at high temperatures in the absence of oxygen. The soot particles in the cloud were collected at different residence times using a water-cooled, nitrogen-quenched suction probe. Test variables included the reaction temperature and coal type. Soot yields in terms of weight percentage of dry ash-free coal were measured based on bulk …