64,250 research outputs found
High energy solutions of general Kirchhoff type equations without the Ambrosetti-Rabinowitz type condition
No full textIn this article, we study the following general Kirchhoff type equation: −M∫R3∣∇u∣2dxΔu+u=a(x)f(u)inR3,-M\left(\mathop{\int }\limits_{{{\mathbb{R}}}^{3}}| \nabla u{| }^{2}{\rm{d}}x\right)\Delta u+u=a\left(x)f\left(u)\hspace{1em}{\rm{in}}\hspace{0.33em}{{\mathbb{R}}}^{3}, where infR+M>0{\inf }_{{{\mathbb{R}}}^{+}}M\gt 0 and ff is a superlinear subcritical term. By using the Pohozǎev manifold, we obtain the existence of high energy solutions of the aforementioned equation without the well-known Ambrosetti-Rabinowitz type condition
Crustal structure in the Western Somali Basin
No full textAs part of integrated marine geophysical studies in the Western Somali Basin, we performed 118 sonobuoy experiments to define better the crustal structure of the margins and basin created by the separation of Madagascar and Africa. After using T2/X2, conventional slope-intercept methods, and slant-stacked t-p techniques to analyse the data, we combined our solutions with all previous velocity information for the area. Velocity functions were derived for the sediment column, and we detected a high-velocity (4.58 ± 0.29 km s–1) sediment layer overlying acoustic basement. We confirmed that the crust is indeed seismically oceanic, and that it may be considered either in terms of a layered model – layers 2B (5.42 ± 0.19 km s–1), 2C (6.23 ± 0.22 km s–1), 3 (7.03 ± 0.25 km s–1), and mantle (7.85 ± 0.32 km s–1) were identified – or a more complex gradient model in which layer 2 is marked by a steeper velocity gradient than underlying layer 3. Integrated igneous crustal thicknesses (1.62 ± 0.22 s, 5.22 ± 0.64 km) are significantly less than what is considered normal. We present a revised seismic transect across the East African margin, as well as total sediment thickness, depth to basement and crustal thickness maps.<br/
Thermal expansion anomalies of R(Fe, M)(12) (R=Y, Nd; M=Mo and Si)
No full textStructural and thermal-expansion anomaly studies on R(Fe,M)(12) (R=Nd and and Y, M=Mo and Si) compounds were performed by x-ray diffraction. Mo atoms occupy the 8i site. While Si atoms occupy the 8f and 8j sites but not the 8i site. Thermal-expansion anomaly shows only in ab plane in the Mo compounds, while becomes very weak and along with only the c axis in the Si compounds. The anomaly was attributed to the contribution of the interactions of short Fe-Fe distances similar to the previous explanation on other R-Fe intermetallics and that of other strongly positive interactions such as 8j-8j. (c) 2005 American Institute of Physics.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000230168300025&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Physics, AppliedSCI(E)EICPCI-S(ISTP)
Letter from Thomas R. Bodine, American Friends Service Committee Seattle office, to Mary M. Kimber, May 25, 1942
No full textLetter from Thomas R. Bodine to Mary M. Kimber, asking Kimber to visit individuals from the Puget Sound area incarcerated at Pinedale Assembly Center: Rev. Daisuke Kitigawa, Waichi Oyanagi, Chisako Higuchi, Mutsuo Hasiguchi and Mrs. Matsuoka, Makato Kobukata, the Hirabayashi family, and Violet Yokoyama. A note in pencil at the top of the page: "Burcham." A response letter from Grace and Calvin Coke to Thomas R. Bodine is found in item: chs_ms840_0306.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
Geotechnical properties of Mississippi River delta sediments utilizing in situ pressure sampling techniques
No full textTypescript (photocopy).Rapid accumulation of organic-rich sediments and the subsequent anaerobic, biogenic decomposition of the organic material on the Mississippi River delta have led to sediment regions with high methane concentrations. The presence of the very soft, underconsolidated, gassy sediments creates a variety of problems for the acquisition of seismic data and samples for geotechnical analyses. A pressure core barrel has been developed by Texas A&M University, in conjunction with the U.S. Geological Survey Mississippi Delta Project, to investigate these shallow gas-charged sediments. Substantial quantities of biogenic methane gas are found in the surficial sediments (0-50 m subsurface) of the Mississippi Delta. The presence of methane gas in the pro-delta sediments is believed to play a major role in sediment instability phenomena. In addition, the acoustic attenuation of high resolution seismic signals that causes an acoustic wipeout commonly observed over large areas of pro-delta sediments, as well as other regions worldwide, is also believed to be caused by the presence of biogenic and/or thermogenic gas in bubble form. New techniques developed for geotechnical sampling with a pressure core barrel and pressurized Shelby tubes have provided insight into the effects of methane solubility and the resultant physical characteristics of samples collected and tested at in situ and ambient pressures. Sample testing procedures require the use of a manned hyperbaric chamber, pressurized to in situ sample pressures. Test results indicate samples that contain high methane concentrations show marked reduction in strength characteristics resulting from evolution of methane gas in bubble form upon release of in situ pressures. Gas bubble formation is directly evidenced as increased sample void ratio and porosity. Consolidation test results indicate that this process can be correlated to increased coefficients of consolidation and compressibility
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
Schrodinger-Poisson equations without Ambrosetti-Rabinowitz condition
No full textWe prove the existence of ground state solutions for a stationary Schrodinger-Poisson equation in R(3). The proof is based on the mountain pass theorem and it does not require the Ambrosetti-Rabinowitz condition. (C) 2010 Elsevier Inc. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)FAPESP[2009/14218-2]Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNPq/Brazil[620150/2008-4]CNPq/Brazil[303080/2009-4]Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNPq/Brazil[302605/2008-3]Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNPq/Brazil[313237/2009-3]PROCAD/CAPES[024/2007]Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
A geological and geophysical study of the Sergipe-Alagoas Basin
No full textExtensional stresses caused Africa and South America to break up about 130
Million Years. When Africa rifted away from South America, a large onshore triple
junction began at about 13�� S and propagated northward. This triple junction failed and
created the Reconcavo-Tucano-Jupato rift (R-T-J), located in northeastern Brazil (north
of Salvador). The extensional stress that created this rift was caused by a change in the
force acting on the plate during the Aptian.
A series of offshore rifts also opened at this time, adjacent to the R-T-J rift; this
series of basins are referred to as Jacuipe, Sergipe, and Alagoas (J-S-A). The basins are
separated by bathymetric highs to the north and the south of the Sergipe-Alagoas basin.
The Sergipe-Alagoas basin has a Bouguer gravity anomalies more negative than -35
mGal, and the other two basins have values more negative than -100 mGal; the total
magnetic intensity is also about 60-80 nT higher in the Sergipe-Alagoas basin than the
surrounding basins. The gravity and magnetic values in the Sergipe-Alagoas basin,
when compared to the Jacuipe and the Sergipe-Alagoas basins, indicate that the depositional history and/or the formation of the Sergipe-Alagoas basin is different from
the other two basins.
This study was done by analyzing the gravity and magnetic anolamies in the
region, and comparing these anomalies to the stratigraphy of the basin. This research
has allowed the stratigraphy and structures of the Sergipe-Alagoas basin to be better
understood - the location of the Sergipe fracture zone will also be outlined. This study
provides a comprehensive view of the Sergipe-Alagoas basin and outlines a method for
using Gravity and Magnetics to better understand the stratigraphy and structure of the
Sergipe-Alagoas basin
Liftings for noncomplete probability spaces
No full textThe current state of knowledge concerning liftings for noncomplete probability spaces is discussed. This is a somewhat expanded version of the author's talk given at the 1991 Summer Conference on General Topology and Applications in Honor of Mary Ellen Rudin and Her Work.PT: S; CR: BURKE MR, IN PRESS P AM MATH S BURKE MR, 1991, ISRAEL J MATH, V73, P33 BURKE MR, 1992, ISRAEL J MATH, V79, P289 CARLSON T, THEOREM LIFTING CHRISTENSEN JPR, 1974, TOPOLOGY BOREL STRUC FREMLIN DH, 1989, HDB BOOLEAN ALGEBRAS, P877 INOESCUTULCEA A, 1966, 5TH P BERK S MATH ST, V2 IONESCUTULCEA A, 1967, CONTRIBUTIONS PROB 1, P63 IONESCUTULCEA A, 1969, TOPICS THEORY LIFTIN JECH TJ, 1978, SET THEORY JOHNSON RA, 1980, P AM MATH SOC, V80, P234 JUST W, IN PRESS T AM MATH S KUPKA J, 1983, INDIANA U MATH J, V32, P717 LOSERT V, 1983, LNM, V1080, P95 MAHARAM D, 1958, P AM MATH SOC, V9, P987 SHELAH S, 1983, ISRAEL J MATH, V45, P90 TALAGRAND M, 1982, P AM MATH SOC, V84, P379 VONNEUMANN J, 1931, CRELLES J MATH, V165, P109; NR: 18; TC: 0; J9: ANN N Y ACAD SCI; PG: 4; GA: BZ86BSource type: Electronic(1
- …
