134,655 research outputs found
Programs and datasets for "Agglomeration Economies in the Formal and Informal Sectors: a Bayesian Spatial Approach" by Kiyoyasu Tanaka and Yoshihiro Hashiguchi
No full textPrograms and datasets for "Agglomeration economies in the formal and informal sectors: a Bayesian spatial approach" by Kiyoyasu Tanaka and Yoshihiro Hashiguch
Tanaka spaces and products of sequential spaces
No full textsummary:We consider properties of Tanaka spaces (introduced in Mynard F., {\it More on strongly sequential spaces\/}, Comment. Math. Univ. Carolin. {\bf 43} (2002), 525--530), strongly sequential spaces, and weakly sequential spaces. Applications include product theorems for these types of spaces
Joshua Davis: Author of Spare Parts
No full textCitation: K-State First (2016). Joshua Davis: Author of Spare Parts [Flier]. Manhattan, Kansas: K-State First.Flyer advertising Joshua Davis's author talk at Kansas State University
Normalized solutions for fractional nonlinear scalar field equations via Lagrangian formulation
No full textWe study existence of solutions for the fractional problem (Pm)
(−Δ)su + μu = g(u) in RN,
RN
u2dx = m,
u ∈ Hs
r (RN),
where N 2, s ∈ (0, 1), m > 0, μ is an unknown Lagrange multiplier and
g ∈ C(R,R) satisfies Berestycki–Lions type conditions. Using a Lagrangian
formulation of the problem (Pm), we prove the existence of a weak solution
with prescribed mass when g has L2 subcritical growth. The approach relies on
the construction of a minimax structure, by means of a Pohozaev’s mountain in
a product space and some deformation arguments under a new version of the
Palais–Smale condition introduced in Hirata and Tanaka (2019 Adv. Nonlinear
Stud. 19 263–90); Ikoma and Tanaka (2019 Adv. Differ. Equ. 24 609–46). A
multiplicity result of infinitely many normalized solutions is also obtained if g
is odd
Steven Johnson Author Talk Poster
No full textK-State Book NetworkA poster advertising an author talk by Steven Johnson at Kansas State University on September 3, 2014. Steven Johnson's book "The Ghost Map" was the 2014-2015 common book
Crack initiation life in notched steel bars under torsional fatigue: Synthesis based on the averaged strain energy density approach
No full textIn a recent contribution by Tanaka, the fatigue behaviour of notched bars made of austenitic stainless steel, SUS 316L, and carbon steel, SGV 410, characterized by different values of the notch tip radius was investigated under torsion loading. Tanaka monitored both fatigue crack initiation and propagation phases by means of the potential drop technique. The crack initiation life is correlated here to the depth of the initiated fatigue crack by means of calibration curves derived from electrical finite element (FE) analyses. In the present contribution, the approach based on the strain energy density (SED) averaged over a structural volume embracing the notch tip is employed to re-analyse the original experimental results of each material, by taking into account the crack initiation life, in order to exclude all extrinsic mechanisms acting during the crack propagation phase, i.e. sliding contact, friction and meshing between crack mating surfaces
Space charge and charge trapping characteristics of cross-linked polyethylene subjected to ac electric stresses
No full textThis paper reports on the result of space charge evolution in cross-linked polyethylene (XLPE) planar samples of approximately 220 ?m thick. The space charge measurement technique used in this study is the PEA method. There are two phases to this experiment. In the first phase, the samples were subjected to dc 30 kVdc/mm and ac (sinusoidal) electric stress level of 30 kVpk/mm at frequencies of 1 Hz, 10 Hz and 50 Hz ac. In addition, ac space charge under 30 kVrms/mm and 60 kVpk/mm electric stress at 50 Hz was also investigated. The volts off results showed that the amount of charge trapped in XLPE sample under dc electric stress is significantly bigger than samples under ac stress even when the applied ac stresses are substantially higher. The second phase of the experiment involves studying the dc space charge evolution in samples that were tested under ac stress during the first phase of the experiment. Ac ageing causes positive charge to become more dominant over negative charge. It was also discovered that ac ageing creates deeper traps, particularly for negative charge. This paper also gave a brief overview of the data processing methods used to analyse space charge under ac electric stress
Correction of 3D rigid body motion in fMRI time series by independent estimation of rotational and translational effects in k-space
No full textIn functional magnetic resonance imaging (fMRI), even subvoxel motion dramatically corrupts the blood oxygenation level-dependent (BOLD) signal, invalidating the assumption that intensity variation in time is primarily due to neuronal activity. Thus, correction of the subject's head movements is a fundamental step to be performed prior to data analysis. Most motion correction techniques register a series of volumes assuming that rigid body motion, characterized by rotational and translational parameters, occurs. Unlike the most widely used applications for fMRI data processing, which correct motion in the image domain by numerically estimating rotational and translational components simultaneously, the algorithm presented here operates in a three-dimensional k-space, to decouple and correct rotations and translations independently, offering new ways and more flexible procedures to estimate the parameters of interest. We developed an implementation of this method in MATLAB, and tested it on both simulated and experimental data. Its performance was quantified in terms of square differences and center of mass stability across time. Our data show that the algorithm proposed here successfully corrects for rigid-body motion, and its employment in future fMRI studies is feasible and promising. (C) 2009 Elsevier Inc. All rights reserved. RI Waggoner, R./F-2654-201
Symmetry-dependent vibrational excitation in K-shell photoionization of CO and N-2: Experiment and theory
No full textUeda, K (Ueda, K.); Matsumoto, M (Matsumoto, M.); Hatamoto, T (Hatamoto, T.); Liu, XJ (Liu, X.-J.); Lischke, T (Lischke, T.); Prumper, G (Pruemper, G.); Tanaka, T (Tanaka, T.); Hoshino, M (Hoshino, M.); Makochekanwa, C (Makochekanwa, C.); Kitajima, M (Kitajima, M.); Tanaka, H (Tanaka, H.); Harries, JR (Harries, J. R.); Tamenori, Y (Tamenori, Y.); Ehara, M (Ehara, M.); Kuramoto, K (Kuramoto, K.); Nakatsuj, H (Nakatsuj, H.
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