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17,203
Intelligent Tutoring Goes to School in the Big City
 International Journal of Artificial Intelligence in Education
, 1997
"... Abstract. This paper reports on a largescale experiment introducing and evaluating intelligent tutoring in an urban High School setting. Critical to the success of this project has been a clientcentered design approach that has matched our client's expertise in curricular objectives and class ..."
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Cited by 421 (118 self)
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an intelligent tutor, called PAT, that supports this curriculum and has been made a regular part of 9th grade Algebra in 3 Pittsburgh schools. In the 199394 school year, we evaluated the effect of the PUMP curriculum and PAT tutor use. On average the 470 students in experimental classes outperformed students
REGULARIZING EFFECTS FOR ut = A (U)
, 1981
"... One expression of the fact that the nonnegative solutions of the initialvalue problems u mt Au 0 t> 0, X R (IVP) u(Ox) Uo(x) where m> 0, are more regular for t> 0 than a rough initial data u0 is the remarkable pointwise inequality ut = Au m>(N/(N(m1) + 2)t)u obtained by Aronson and B ..."
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One expression of the fact that the nonnegative solutions of the initialvalue problems u mt Au 0 t> 0, X R (IVP) u(Ox) Uo(x) where m> 0, are more regular for t> 0 than a rough initial data u0 is the remarkable pointwise inequality ut = Au m>(N/(N(m1) + 2)t)u obtained by Aronson
Estimation and Inference in Large Heterogeneous Panels with a Multifactor Error Structure
, 2004
"... This paper presents a new approach to estimation and inference in panel data models with a multifactor error structure where the unobserved common factors are (possibly) correlated with exogenously given individualspecific regressors, and the factor loadings differ over the cross section units. The ..."
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Cited by 383 (44 self)
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. The basic idea behind the proposed estimation procedure is to filter the individualspecific regressors by means of (weighted) crosssection aggregates such that asymptotically as the crosssection dimension ( N) tends to infinity the differential effects of unobserved common factors are eliminated
Growth Is Good for the Poor
 Journal of Economic Growth
, 2000
"... Average incomes of the poorest fifth of society rise proportionately with average incomes. This is a consequence of the strong empirical regularity that the share of income accruing to the bottom quintile does not vary systematically with average income. In this paper we document this empirical regu ..."
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Cited by 376 (4 self)
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regularity in a large sample of 92 countries spanning the past four decades, and show that it holds across regions, time periods, income levels, and growth rates. We next ask whether the factors that explain crosscountry differences in growth rates of average incomes have differential effects on the poorest
Velocity Averaging, Kinetic Formulations, and Regularizing Effects . . .
, 2007
"... We prove in this paper new velocityaveraging results for secondorder multidimensional equations of the general form L(∇x,v)f (x,v) = g(x,v) where L(∇x,v): = a(v) ·∇x −∇ ⊤ x · b(v)∇x. These results quantify the Sobolev regularity of the averages, ∫ v f (x, v)φ(v)dv, in terms of the nondegeneracy o ..."
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Cited by 14 (0 self)
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of the set {v:L(iξ,v)≤δ} and the mere integrability of the data, ( f, g) ∈ (L p x,v, L q x,v). Velocity averaging is then used to study the regularizing effect in quasilinear secondorder equations, L(∇x,ρ)ρ = S(ρ), which use their underlying kinetic formulations, L(∇x,v)χρ = gS. In particular, we
A Regularizing Effect of Nonlinear Transport Equations
, 1998
"... We consider the semigroup on L 1 (IR n ) defined by the nonlinear transport equation for the scalar s @ t s + div(f(s) u) = 0 in (0; 1)\ThetaIR n for given velocity field u. We show that this nonlinear semigroup is Holder continuous for t ? 0 in the uniform operator topology, provided the graph ..."
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Cited by 2 (1 self)
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the graph of f has no linear segments. This continuity property  which expresses a regularizing effect of the nonlinearity in the transport equation  is robust with respect to the spatial behaviour of the timeindependent velocity field u. Introduction Consider a scalar quantity s  think
Phonological priming in the lexical decision task: Regularity effects are not necessary evidence for assembly
 Journal of Experimental Psychology: Human Perception & Performance
, 1997
"... The contribution of assembled phonology in reading English was examined in the lexical decision task by comparing two markers: regularity effects and phonological priming. Strategic control was assessed by manipulating the phonological lexicality of the foils: Experiment 1 used legal nonwords, where ..."
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Cited by 12 (1 self)
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The contribution of assembled phonology in reading English was examined in the lexical decision task by comparing two markers: regularity effects and phonological priming. Strategic control was assessed by manipulating the phonological lexicality of the foils: Experiment 1 used legal nonwords
Optimal regularizing effect for scalar conservation laws
 Rev. Mat. Iberoam
"... Abstract. We investigate the regularity of bounded weak solutions of scalar conservation laws with uniformly convex flux in space dimension one, satisfying an entropy condition with entropy production term that is a signed Radon measure. We prove that all such solutions belong to the Besov space B ..."
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Cited by 7 (0 self)
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Abstract. We investigate the regularity of bounded weak solutions of scalar conservation laws with uniformly convex flux in space dimension one, satisfying an entropy condition with entropy production term that is a signed Radon measure. We prove that all such solutions belong to the Besov space B
Regularizing effect and local existence for noncutoff Boltzmann equation
"... Abstract. The Boltzmann equation without Grad’s angular cutoff assumption is believed to have regularizing effect on the solution because of the nonintegrable angular singularity of the crosssection. However, even though so far this has been justified satisfactorily for the spatially homogeneous B ..."
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Cited by 22 (11 self)
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Abstract. The Boltzmann equation without Grad’s angular cutoff assumption is believed to have regularizing effect on the solution because of the nonintegrable angular singularity of the crosssection. However, even though so far this has been justified satisfactorily for the spatially homogeneous
Results 11  20
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17,203