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May 20, 1998
05/98
May 20, 1998
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Mount Wilson Observatory
image
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This image includes data from the synoptic program at the 150-Foot Solar Tower of the Mt. Wilson Observatory. The Mt. Wilson 150-Foot Solar Tower is operated by UCLA, with funding from NASA, ONR and NSF, under agreement with the Mt. Wilson Institute.
Topics: solar, activity, sun, drawing, wilson
Topics: tagesschau, Evening News, Germany
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55
May 20, 1998
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May 20, 1998
by
P. Miller; J. K. Freericks; E. J. Nicol
texts
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We calculate the effects of vertex corrections, of non-constant density of states and of a (self-consistently determined) phonon self-energy for the Holstein model on a 3D cubic lattice. We replace vertex corrections with a Coulomb pseudopotential, mu*, adjusted to give the same Tc, and repeat the calculations, to see which effects are a distinct feature of vertex corrections. This allows us to determine directly observable effects ofvertex corrections on a variety of thermodynamic properties...
Source: http://arxiv.org/abs/cond-mat/9805254v1
Note :
Topics: californiarevealed, Newspaper--Local editions, California--Newspapers, Local history, Newspapers,...
Source: Microfilm: 16 Pages of 16 (11 1/2 x 22 3/4)
Dnr 1998-05-20: Volume 28 , Issue 60. Digitized from IA1532309-05 . Previous issue: sim_dnr_1998-05-18_28_59 . Next issue: sim_dnr_1998-05-22_28_61 .
Topics: Textile Industries And Fabrics, Trade Journals, microfilm
Source: IA1532309-05
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May 20, 1998
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May 20, 1998
by
Nintendo
audio
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Format: M4A converted from FLAC (Lossless) Original soundtrack for the game 1080° Snowboarding, for the Nintendo 64 Sound Series releases. Track list: vacant lives (Title Demo) 4:32 work your body (Game Select) 1:53 dance! (Course BGM/Crystal Lake) 3:17 this is a test (Course BGM/Crystal Peak) 3:24 golden forest (Course BGM/Golden Forest) 3:55 grasp power! (Course BGM/Mountain Village) 4:05 blue flame (Course BGM/Dragon Cave) 2:27...
Topics: 1080 snow boarding, nintendo 64, soundtrack
This paper presents general information describing the Data Acquisition System contract, a summary of objectives, tasks performed and completed. The hardware deliverables which are comprised of: 1) Two ground DAS units; 2) Two flight DAS units; 3) Logistic spares; and 4) Shipping containers are described. Also included are the data requirements and scope of the contract.
Topics: NASA Technical Reports Server (NTRS), DATA ACQUISITION, FURNACES, DIRECTIONAL SOLIDIFICATION...
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May 20, 1998
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May 20, 1998
by
Feng-Cai Ma; Hai-Ming Hu
texts
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A testing of quantum mechanics in nuetrino oscillation is presented. The quantum mechanics violation motivated by arguements of quantum gravity is investigated in neutrino system. The formula of density matrix and oscillation probability of nuetrinos with and without the effect of quantum mechanics violation are derived for the cases of neutrino ocsillation in vacuum and matter. The limits to the corresponding parameters are obtained from neutrino experiments.
Source: http://arxiv.org/abs/hep-ph/9805391v1
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May 20, 1998
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May 20, 1998
by
Dirk Helbing
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Several types of stochastic equations are important in thermodynamics, chemistry, evolutionary biology, population dynamics and quantitative social science. For systems with pair interactions four different types of equations are derived, starting from a master equation for the state space: First, general mean value and (co)variance equations. Second, Boltzmann-like equations. Third, a master equation for the configuration space allowing transition rates which depend on the occupation numbers...
Source: http://arxiv.org/abs/cond-mat/9805256v1
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May 20, 1998
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May 20, 1998
by
J. Bijnens; G. Colangelo; P. Talavera
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We calculate the vector and scalar form factors of the pion to two loops in Chiral Perturbation Theory. We estimate the unknown O(p^6) constants using resonance exchange. We make a careful comparison to the available data and determine two O(p^4) constants rather precisely, and two O(p^6) constants less precisely. We also use Chiral Perturbation Theory to two loops to extract in a model--independent manner the charge radius of the pion from the available data, and obtain \rpiV=0.437\pm 0.016...
Source: http://arxiv.org/abs/hep-ph/9805389v1
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May 20, 1998
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May 20, 1998
by
A. I. Bochkarev; R. S. Willey
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We study electroweak parameters sensitive to the radiative corrections, such as $\rho$-ratio and $\hff$ decay rates in the $\ms$-scheme in the heavy $t$-quark mass limit $m_{t} \gg m_{w}$. In $\ms$-scheme the two-loop electroweak corrections $\sim m_{t}^{4}$ dominate over the QCD corrections $\sim \as m_{t}^{2}$ in the $\rho$-ratio. The relation between the on-shell coupling constants and $\ms$-parameters is found to be rather sensitive to the Higgs boson mass.
Source: http://arxiv.org/abs/hep-ph/9607240v2
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May 20, 1998
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May 20, 1998
by
János Kollár
texts
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Let $f_i$ be polynomials in $n$ variables without a common zero. Hilbert's Nullstellensatz says that there are polynomials $g_i$ such that $\sum g_if_i=1$. The effective versions of this result bound the degrees of the $g_i$ in terms of the degrees of the $f_j$. The aim of this paper is to generalize this to the case when the $f_i$ are replaced by arbitrary ideals. Applications to the B\'ezout theorem, to \L ojasiewicz--type inequialities and to deformation theory are also discussed.
Source: http://arxiv.org/abs/math/9805091v1
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May 20, 1998
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May 20, 1998
by
Stephane Willocq
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We report new preliminary B Physics results obtained with 300,000 hadronic Z0 decays collected by the SLD experiment at the SLC between 1993 and 1997. Three analyses are presented: a measurement of B+ and B0 lifetimes, a study of the time dependence of Bs - Bs-bar mixing, and a search for decays of the type b --> sg. All analyses benefit from the small and stable interaction point and the excellent resolution and efficiency provided by the pixel-based CCD Vertex Detector. The b --> sg...
Source: http://arxiv.org/abs/hep-ex/9805022v1
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49
May 20, 1998
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May 20, 1998
by
Haiqing Wei; Xin Xue; S. D. Morgera
texts
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In a lattice ${\cal L}$ of nuclear spins with ABCABCABC... type periodic structure embedded in a single-crystal solid, each ABC-unit can be used to store quantum information and the information can be moved around via some cellular shifting mechanism. Impurity doping marks a special site D$\not\in{\cal L}$ which together with the local spin lattice constitute a quantum automaton where the D site serves as the input/output port and universal quantum logic is done through two-body interactions...
Source: http://arxiv.org/abs/quant-ph/9805059v1
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May 20, 1998
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May 20, 1998
by
Boris Dubrovin; Youjin Zhang
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We define certain extensions of affine Weyl groups (distinct from these considered by K. Saito [S1] in the theory of extended affine root systems), prove an analogue of Chevalley theorem for their invariants, and construct a Frobenius structure on their orbit spaces. This produces solutions $F(t_1, ..., t_n)$ of WDVV equations of associativity polynomial in $t_1, ..., t_{n-1}, \exp t_n$.
Source: http://arxiv.org/abs/hep-th/9611200v2
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May 20, 1998
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May 20, 1998
by
Adam Frank
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Hypersonic bipolar outflows are a ubiquitous phenomena associated with both young and highly evolved stars. Observations of Planetary Nebulae, the nebulae surrounding Luminous Blue Variables such as $\eta$ Carinae, Wolf Rayet bubbles, the circumstellar environment of SN 1987A and Young Stellar Objects all revealed high velocity outflows with a wide range of shapes. In this paper I review the current state of our theoretical understanding of these outflows. Beginning with Planetary Nebulae...
Source: http://arxiv.org/abs/astro-ph/9805275v1
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71
May 20, 1998
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May 20, 1998
by
A. S. Wilson; A. L. Roy; J. S. Ulvestad; E. J. M. Colbert; K. A. Weaver; J. A. Braatz; C. Henkel; M. Matsuoka; S. Xue; N. Iyomoto; K. Okada
texts
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In this paper, we report VLBA radio maps at three frequencies and an ASCA X-ray spectrum of the water megamaser galaxy NGC 2639, which is believed to contain an edge-on viewed accretion disk. The radio observations reveal a compact ($
Source: http://arxiv.org/abs/astro-ph/9805279v1
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50
May 20, 1998
05/98
May 20, 1998
by
Theodore B. Stanford
texts
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We show that two knots have matching Vassiliev invariants of order less than n if and only if they are equivalent modulo the nth group of the lower central series of some pure braid group, thus characterizing Vassiliev's knot invariants in terms of the structure of the braid groups. We also prove some results about knots modulo the nth derived subgroups of the pure braid groups, and about knots modulo braid subgroups in general.
Source: http://arxiv.org/abs/math/9805092v1
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May 20, 1998
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May 20, 1998
by
P. Mohr; H. Beer; H. Oberhummer; G. Staudt
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The neutron capture cross section of 26Mg was measured relative to the known gold cross section at thermonuclear energies using the fast cyclic activation technique. The experiment was performed at the 3.75 MV Van-de-Graaff accelerator, Forschungszentrum Karlsruhe. The experimental capture cross section is the sum of resonant and direct contributions. For the resonance at E(n,lab) = 220 keV our new results are in disagreement with the data from Weigmann et al. An improved Maxwellian averaged...
Source: http://arxiv.org/abs/nucl-ex/9805008v1
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40
May 20, 1998
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May 20, 1998
by
A. Schwartz; M. Dressel; G. Gruner; V. Vescoli; L. Degiorgi; T. Giamarchi
texts
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We have measured the electrodynamic response in the metallic state of three highly anisotropic conductors, (TMTSF)_2 X, where X=PF_6, AsF_6, or ClO_4, and TMTSF is the organic molecule tetramethyltetraselenofulvalene. In all three cases we find dramatic deviations from a simple Drude response. The optical conductivity has two features: a narrow mode at zero frequency, with a small spectral weight, and a mode centered around 200 cm^{-1}, with nearly all of the spectral weight expected for the...
Source: http://arxiv.org/abs/cond-mat/9801198v3
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152
May 20, 1998
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May 20, 1998
by
Dirk Helbing; Peter Molnar
texts
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It is suggested that the motion of pedestrians can be described as if they would be subject to `social forces'. These `forces' are not directly exerted by the pedestrians' personal environment, but they are a measure for the internal motivations of the individuals to perform certain actions (movements). The corresponding force concept is discussed in more detail and can be also applied to the description of other behaviors. In the presented model of pedestrian behavior several force terms are...
Source: http://arxiv.org/abs/cond-mat/9805244v1
Issue of the student newspaper from Indiana University-Purdue University or its predecessors. Vol. "30" printed on piece; Issue 31 and 32 missing.
Topic: College student newspapers and periodicals
Source: folio
12,680
13K
May 20, 1998
05/98
May 20, 1998
by
Elliott Smith
etree
eye 12,680
favorite 4
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1998-05-20 Troubadour Los Angeles, CA Excellent overall (volume a big low, occasional hissing, blanks during Division day) Acoustic solo except * with Quasi and ** with Jon Brion 1. Last Call 2. Condor Ave. 3. Waltz #2 (XO) 4. Tomorrow Tomorrow 5. Bottle Up and Explode! 6. Between the Bars 7. Say Yes 8. Oh Well, Okay 9. Pitseleh 10. Pictures of Me * 11. Alameda * 12. A Question Mark * * 13. Bled White * 14. Rose Parade 15. I'm So Tired [Beatles] * 16. Division Day * This features the...
favoritefavoritefavoritefavorite ( 1 reviews )
Topics: GameWave (ゲームウェーブ), gamewave
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37
May 20, 1998
05/98
May 20, 1998
by
Directorate of Printing, Government of India
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The Gazette of India Extraordinary Gazette Published by the Directorate of Printing, Department of Publication, Ministry of Housing and Urban Affairs, Government of India Published in 1998, Issue Number 593 Ministry: Ministry of Labour Subject: The following corrigendum is published to rectify the mistakes in the publication of Government of India, Ministry of Labour Notification No. 149(E) published in the Gazette of India, Extraordinary, Part II, Section 3, Sub-Section (i) dated 26-3-98
Topic: Extraordinary Gazette of India
Numero intero del giorno 1998-05-20 dall'archivio storico La Stampa.
Topics: newspapers, giornali, La Stampa, Archivio Storico La Stampa
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35
May 20, 1998
05/98
May 20, 1998
by
Bram De Saedeleer
software
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Theme about the famous Belgian surrealist painter René Magritte.
Topics: Desktop Theme, Winfiles
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44
May 20, 1998
05/98
May 20, 1998
by
Neven Bilic; David Tsiklauri; Raoul Viollier
texts
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In the framework of the Thomas-Fermi model at finite temperature, we show that a cooling nondegenerate gas of massive neutrinos will undergo a phase transition in which quasi-degenerate supermassive neutrino stars are formed through gravitational collapse. For neutrinos in the mass range of 10 to 25 keV these compact dark objects could mimic the role of supermassive black holes that are usually assumed to exist at the centres galaxies. Astrophysical implications and constraints on the neutrino...
Source: http://arxiv.org/abs/hep-ph/9805398v1
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40
May 20, 1998
05/98
May 20, 1998
by
M. Masip; R. Munoz-Tapia
texts
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We study the limits on the mass of the lightest Higgs in supersymmetric models extended with a gauge singlet when perturbative unification is required. We find that when maximum intermediate matter is added, the different evolution of the gauge couplings raises the mass bound from 135 GeV to 155 GeV. In these models perturbative unification of the gauge couplings is achieved in a natural way.
Source: http://arxiv.org/abs/hep-ph/9805399v1
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38
May 20, 1998
05/98
May 20, 1998
by
Daniel Wicke
texts
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The size of non-perturbative corrections to event shape observables is predicted to fall like powers of the inverse centre of mass energy. These power corrections are investigated for different observables from $e^+e^-$-annihilation measured at LEP as well as previous experiments. The obtained corrections are compared to other approaches and theoretical predictions. Measurements of $\alpha_s$ using power corrections are compared to conventional methods.
Source: http://arxiv.org/abs/hep-ph/9805392v1
Federal Register 1998-05-20: Volume 63 , Issue 97. Digitized from IA1532618-04 . Previous issue: sim_federal-register-find_1998-05-19_63_96 . Next issue: sim_federal-register-find_1998-05-21_63_98 .
Topics: Public Administration, Government Documents, microfilm
Source: IA1532618-04
Customs Bulletin and Decisions : Regulations, Rulings, Decisions, and Notices Concerning Customs and Related Matters of the United States Court of Appeals for the Federal Circuit and the United States Court of International Trade 1998-05-20: Volume 32 , Issue 20. Digitized from IA1519209-01 . Previous issue: sim_customs-bulletin-and-decisions-regulations-rulings_1998-05-13_32_19 . Next issue: sim_customs-bulletin-and-decisions-regulations-rulings_1998-05-27_32_21 .
Topics: Government Documents, microfilm
Source: IA1519209-01
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500
May 20, 1998
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May 20, 1998
texts
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Topic: Princeton (N.J.) -- Newspapers
Source: folio
Note : Another program can be heard faintly under primary program. Series : Air Talk: The Caltech Edition Additional Title : The New Era in Biology Description : AirTalk is the longest-running daily talk show in Southern California, aired for the first time on April, 1985. Starting in 1988, the talk show hosted by Larry Mantle, was devoted to Caltech and Jet Propulsion Laboratory on the third Wednesday of every month and had the title "AirTalk: The Caltech Edition". The first...
Topics: californialightandsound, Air Talk: The Caltech Edition
Source: 1 Tape of 1: 1/8 inch audio cassette
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35
May 20, 1998
05/98
May 20, 1998
by
Densho Visual History Collection
movies
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Interview location: Seattle, Washington Deciding to go to college and become a teacher Segment 18 of 20 [ Previous segment ] -- [ Next segment ] For more information, visit Densho
Topics: Japanese Americans, Oral history
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48
May 20, 1998
05/98
May 20, 1998
by
Densho Visual History Collection
movies
eye 48
favorite 0
comment 0
Interview location: Seattle, Washington Seattle's prewar Nihonmachi Segment 2 of 20 [ Previous segment ] -- [ Next segment ] For more information, visit Densho
Topics: Japanese Americans, Oral history
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36
May 20, 1998
05/98
May 20, 1998
by
Densho Visual History Collection
movies
eye 36
favorite 0
comment 0
Interview location: Seattle, Washington Reflections Segment 19 of 20 [ Previous segment ] -- [ Next segment ] For more information, visit Densho
Topics: Japanese Americans, Oral history
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48
May 20, 1998
05/98
May 20, 1998
by
Y. Kawamura; H. P. Nilles; M. Olechowski; M. Yamaguchi
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The relic abundance of stable neutralinos is investigated in $E_8 \times E_8'$ heterotic string theory when supersymmetry is spontaneously broken by hidden-sector gaugino condensates. In the weak coupling regime, very large scalar masses (compared to gaugino masses) are shown to lead to a too large relic abundance of the neutralinos, incompatible with cosmological observations in most of parameter space. The problem does not arise in the strong coupling regime (heterotic M-theory) because there...
Source: http://arxiv.org/abs/hep-ph/9805397v1
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49
May 20, 1998
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May 20, 1998
by
F. Krmpotic; E. J. V. de Passos; D. S. Delion; J. Dukelsky; P. Schuck
texts
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Self Consistent Quasiparticle Random Phase Approximation (SCQRPA) is considered in application to the Fermi transitions within the O(5) model. It is demonstrated that SCQRPA improves on renormalized QRPA (RQRPA), a method that has recently become rather popular in this context. The analytical form of the SCQRPA vacuum is used to evaluate all the matrix elements. The SCQRPA results show a general trend similar to the exact solutions. The necessity to change the single particle basis beyond the...
Source: http://arxiv.org/abs/nucl-th/9805038v1
Note : Program begins at 00:02:12. Audio drops out between 00:54:13 - 00:55:09. Series : The Earnest C. Watson Caltech Lecture Series Description : Joseph E. Shepherd, Ph.D. "Learning from a Tragedy: Explosions and Flight 800" Source : 1 Tape of 1: S-VHS Rights : Copyright status unknown. This work may be protected by the U.S. Copyright Law (Title 17, U.S.C.). In addition, its reproduction may be restricted by terms of gift or purchase agreements, donor restrictions, privacy and...
Topics: californialightandsound, The Earnest C. Watson Lecture Series
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4.0
May 20, 1998
05/98
May 20, 1998
by
U.S. Treasury Department
texts
eye 4
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A media advisory to reporters announcing a photo pool spray of new $20 bills during the production process.
Topic: Numismatics
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62
May 20, 1998
05/98
May 20, 1998
by
G. Raffelt
texts
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If axions exist, they are copiously produced in hot and dense plasmas, carrying away energy directly from the interior of stars. Various astronomical observables constrain the operation of such anomalous stellar energy-loss channels and thus provide restrictive limits on the axion interactions with photons, nucleons, and electrons. In typical axion models a limit m_a < 0.01 eV is implied. The main arguments leading to this result are explained, including more recent work on the important...
Source: http://arxiv.org/abs/hep-ph/9805400v1
No Description
Topics: Podcast, James, bible studies, bible doctrine, scriptures, bible ministry, bible teaching
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64
May 20, 1998
05/98
May 20, 1998
by
M. Henon; J-M. Petit
texts
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Numerical integrations in celestial mechanics often involve the repeated computation of a rotation with a constant angle. A direct evaluation of these rotations yields a linear drift of the distance to the origin. This is due to roundoff in the representation of the sine s and cosine c of the angle theta. In a computer, one generally gets c^2 + s^2 1, resulting in a mapping that is slightly contracting or expanding. In the present paper we present a method to find pairs of representable real...
Source: http://arxiv.org/abs/math/9805088v1
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6.0
May 20, 1998
05/98
May 20, 1998
by
WINGS: Women's International News Gathering Service
audio
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A disproportionately large number of new feminist authors and topics find their first publishers among small non-profit feminist publishing companies. In the last few years, these publishers are under extraordinary stress, due largely to changing conditions in the bookstore world and the dominance of superstore chains. Frieda Werden produced a portrait of the changes, through interviews with: Margarita Donnelly, director of Calyx feminist press in the U.S.; Mary ellen Cavanaugh from My...
Topic: Women and Publishing, Feminist Publications
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13
May 20, 1998
05/98
May 20, 1998
by
Honolulu Coin Club
texts
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News from the Hawaii State Numismatic Association and the Honolulu Coin Club.
Topic: Numismatics
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49
May 20, 1998
05/98
May 20, 1998
by
Claude Sabbah
texts
eye 49
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We show that, given a projective regular function f on a smooth quasi-projective variety over C, the corresponding cohomology groups of the algebraic de Rham complex with twisted differential d-df and of the complex of algebraic forms with differential df have the same dimension (a result announced by Barannikov and Kontsevitch). We generalize the result to de Rham complexes with coefficients in a mixed Hodge Module.
Source: http://arxiv.org/abs/math/9805087v1
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41
May 20, 1998
05/98
May 20, 1998
by
J. Suzuki
texts
eye 41
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comment 0
We investigate a 1D quantum system associated with the Ising model in a field(the dilute $A_3$ model) by the recently developed quantum transfer matrix (QTM) approach. A closed set of functional relations is found among variants of fusion QTMs which are characterized by skew Young tableaux. These relations are proved by using a quantum analogue of Jacobi-Trudi formula, together with special features at "root of unity" . The numerical analysis on their eigenvalues shows a remarkable...
Source: http://arxiv.org/abs/cond-mat/9805241v1
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57
May 20, 1998
05/98
May 20, 1998
by
P. Raychaudhuri; T. K. Nath; A. K. Nigam; R. Pinto
texts
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It has been observed that in bulk and polycrystalline thin films of collossal magnetoresistive (CMR) materials the magnetoresistance follows a different behaviour compared to single crystals or single crystalline films below the ferromagnetic transition temperature Tc. In this paper we develop a phenomenological model to explain the magnetic field dependence of resistance in granular CMR materials taking into account the spin polarised tunnelling at the grain boundaries. The model has been...
Source: http://arxiv.org/abs/cond-mat/9805258v1
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53
May 20, 1998
05/98
May 20, 1998
by
Yupeng Wang
texts
eye 53
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We propose an integrable model of the spin-1/2 Heisenberg chain coupled to two impurity moments. With the open boundary conditions at the impurity sites, the model can be exactly solved for arbitrary impurity spin and arbitrary exchange constants between the bulk and the impurities. The absence of redundant terms in the hamiltonian makes the model very reasonable. The hamiltonian is diagonalized via algebraic Bethe ansatz. It is found that the impurity spins can only be screened (partially for...
Source: http://arxiv.org/abs/cond-mat/9805253v1
