1,701 research outputs found
Closure to “Shear Strength in Preexisting Landslides” by Timothy D. Stark and Manzoor Hussain
No full textInequality and Migration: A Behavioral Link
No full textWe provide an analytical-behavioral explanation for the observed positive relationship between income inequality, as measured by the Gini coefficient, and the incentive to migrate. We show that a higher total relative deprivation of a population leads to a stronger incentive to engage in migration for a given level of a population’s income; that total relative deprivation is positively related to the Gini coefficient; and that, consequently, the Gini coefficient and migration are positively correlated, holding the population’s income constant.Income inequality, Relative deprivation, The Gini coefficient, The incentive to migrate
Closure to “Landfill Liner Interface Strengths from Torsional-Ring-Shear Tests” by Timothy D. Stark and Alan R. Poeppel
No full text
Liquefaction Analysis of Level and Sloping Ground Using Field Case Histories and Penetration Resistance
No full text547 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2001.Lastly, the author proposed a comprehensive liquefaction analysis procedure for sandy soils to evaluate liquefaction susceptibility, liquefaction triggering, and post-triggering stability. The procedure incorporates the proposed relationships to estimate yield and liquefied strength ratio, and does not require a suite of laboratory tests or corrections for sloping ground and vertical effective stress. The procedure is verified initially using the Lower San Fernando Dam case history.U of I OnlyRestricted to the U of I community idenfinitely during batch ingest of legacy ETD
Liquefaction Analysis of Level and Sloping Ground Using Field Case Histories and Penetration Resistance
No full textLastly, the author proposed a comprehensive liquefaction analysis procedure for sandy soils to evaluate liquefaction susceptibility, liquefaction triggering, and post-triggering stability. The procedure incorporates the proposed relationships to estimate yield and liquefied strength ratio, and does not require a suite of laboratory tests or corrections for sloping ground and vertical effective stress. The procedure is verified initially using the Lower San Fernando Dam case history.Made available in DSpace on 2015-09-25T21:03:13Z (GMT). No. of bitstreams: 2
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Previous issue date: 2001Embargo set by: Seth Robbins for item 84449
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Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only547 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2001
Drained shear strength of stiff clays for slope stability analyses
No full textAn investigation has been conducted to gain a better understanding of the drained residual and fully softened shear strengths of cohesive soils, the shear strength mobilized in field case histories involving previous and no previous sliding in stiff clays, and develop empirical relationships that describe the stress-dependent nature of the residual and fully softened shear strengths in terms of soil index properties. To investigate the drained residual strength, a Bromhead ring shear apparatus was modified to allow testing of overconsolidated, presheared, remolded soil specimens of different plasticity and clay-size fraction. Residual shear strengths measured using the modified ring shear apparatus were compared to shear strengths measured in conventional reversal direct shear tests on precut remolded specimens and shear strength values back-calculated from well documented field case histories of slopes that underwent previous sliding. The modified ring shear, direct shear, and triaxial compression apparatuses were used to investigate the fully softened shear strength using normally consolidated, remolded specimens. The natural soils used in the residual and fully softened research have a range of liquid limit of 24 to 286%, plasticity index of 8 to 244%, and clay-size fraction of 10 to 88%.New relationships describing the residual and fully softened friction angles developed from the extensive ring shear testing were presented in terms of the liquid limit, clay-size fraction, and effective normal stress. Most of the existing residual and fully softened strengths relationships are based on only one soil index property and provide a friction angle that is independent of effective normal stress. The importance of incorporating the liquid limit, clay-size fraction, and effective normal stress in estimating the residual and fully softened friction angles was illustrated using field case histories.Several first-time slides through stiff fissured clays were also studied to estimate the shear strength mobilized during failure. Based on these studies and laboratory test results, recommendations for estimating the field shear strength of stiff fissured clay involved in first-time slides were presented.A reanalysis of the 1981 upstream slide in San Luis Dam was conducted to evaluate the shear strength reduction caused by the displacement induced by repeated loading. The effect of plasticity and degree of overconsolidation on this shear strength reduction was investigated.Made available in DSpace on 2011-05-07T12:52:27Z (GMT). No. of bitstreams: 2
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Previous issue date: 1996Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding ([email protected]) on 2011-05-07T14:47:02Z
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OPTICAL STARK SPECTROSCOPY OF NICKLE MONOHYDRIDE, NiH\thanks{Supported by NSF(TCS-ASU).}
No full textJ.A. Gray, S.F. Rice and R.W. Field, J. Chem. Phys., 82,4717 (1985).C.V. Diaconu, A.E. Cho, J.D. Doll and D.L. Freeman, J. Chem. Phys., 121, 10026 (2004).Author Institution: Chemistry and Biochemistry, Arizona State University, Tempe, AZ USA 85287Sometimes ago the MIT group analyzed the Doppler limited optical Stark Spectrum for the -(1,0) (2.5) line of NiH to determine the permanent electric dipole moments, , of 2.40.1 D and 0.30.1 D for the and states, respectively.}\ The ground state value of is routinely predicted to assess the quality of electronic structure predictions.}\ In an effort to reduce the uncertainty in the experimental value of we have analyzed the optical Stark spectrum of the (2.5) and (3.5) of a molecular beam sample. A molecular beam was generated by skimming the output of a laser ablation/supersonic expansion. The dipole moments were determined to be 2.440.02 D and 0.360.02 D for the and states, respectively. The observed trends in the value for the ground state of the first row transition metal monohydrides will be rationalized
On Weil-Stark elements, II: Refined Stark conjectures
No full textThe theory of Weil-Stark elements is used to develop an axiomatic approach to the formulation of refined versions of Stark’s Conjecture. This gives concrete new results concerning leading terms of Artin L-series and arithmetic properties of Stark elements. © 2024 American Mathematical Society.The first and third authors gratefully acknowledge the generous support of Yonsei University, where parts of this research were completed.
The second author acknowledges support as part of Grants CEX2019-000904-S, PID2019-108936GB-C21 and PID2022-142024NB-I00 funded by MCIN/AEI/ 10.13039/501100011033. He also thanks the Isaac Newton Institute, and the organisers of the programme ‘
-theory, algebraic cycles and motivic homotopy theory’, for support that helped advance this project.
The third author was supported by a National Research Foundation of Korea grant (NRF-2022R1F1A1059558) funded by the government of Korea (MSIT)N
Molecular Beam Optical Stark Spectroscopy Of Magnesium Deuteride
No full textLight polar, paramagnetic molecules, such as magnesium hydride, MgH, are attractive for slowing and trapping experiments because these molecules have both non-zero permanent electric dipole, , and magnetic dipole, moments. The permanent electric dipole moment is particularly relevant to Stark deceleration which depends on the ratio of the Stark shift to molecular mass. Here we report on the Stark effect in the (0,0) A – X band system of a cold molecular beam sample of magnesium deuteride, MgD. The lines associated with the lowest rotational levels are detected for the first time. The field-free spectrum was analyzed to produce an improved set of fine structure parameters for the A(v = 0) state. The observed electric field induced splittings and shifts were analyzed to produce permanent electric dipole moments, ,of 2.561(10)D and 1.34(8)D for A(v = 0) and X(v=0)states, respectively. This is the first molecular beam study of MgD.Made available in DSpace on 2014-09-17T16:55:03Z (GMT). No. of bitstreams: 3
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Previous issue date: 2014-06-19Made available in DSpace on 2015-04-14T18:40:34Z (GMT). No. of bitstreams: 4
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Previous issue date: 2014-06-1
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