24,498 research outputs found
Hymen, 2h, Wohltätigkeitsmarke, Gesetzlich geschützt, Emil M. Engel, Wien I
No full textHYMEN, 2H, WOHLTÄTIGKEITSMARKE, GESETZLICH GESCHÜTZT, EMIL M. ENGEL, WIEN I
Hymen, 2h, Wohltätigkeitsmarke, Gesetzlich geschützt, Emil M. Engel, Wien I ( -
Quadratic engel curves and consumer demand
No full textThis paper presents a model of consumer demand that is consistent with the observed expenditure patterns of individual consumers in a long time series of expenditure surveys and is also able to provide a detailed welfare analysis of shifts in relative prices. A nonparametric analysis of consumer expenditure patterns suggests that Engel curves require quadratic terms in the logarithm of expenditure. While popular models of demand such as the Translog or the Almost Ideal Demand Systems do allow flexible price responses within a theoretically coherent structure, they have expenditure share Engel curves that are linear in the logarithm of total expenditure. We derive the complete class of integrable quadratic logarithmic expenditure share systems. A specification from this class is estimated on a large pooled data set of U.K. households. Models that fail to account for Engel curvature are found ro generate important distortions in the patterns of welfare losses associated with a tax increase
Nonparametric IV estimation of shape-invariant Engel curves
No full textThis paper concerns the identification and estimation of a shape-invariant Engel
curve system with endogenous total expenditure. The shape-invariant specification
involves a common shift parameter for each demographic group in a pooled
system of Engel curves. Our focus is on the identification and estimation of both
the nonparametric shape of the Engel curve and the parametric specification of the
demographic scaling parameters. We present a new identification condition, closely
related to the concept of bounded completeness in statistics. The estimation procedure
applies the sieve minimum distance estimation of conditional moment restrictions
allowing for endogeneity. We establish a new root mean squared convergence
rate for the nonparametric IV regression when the endogenous regressor has unbounded
support. Root-n asymptotic normality and semiparametric efficiency of
the parametric components are also given under a set of ‘low-level’ sufficient conditions.
Monte Carlo simulations shed lights on the choice of smoothing parameters
and demonstrate that the sieve IV estimator performs well. An application is made
to the estimation of Engel curves using the UK Family Expenditure Survey and
shows the importance of adjusting for endogeneity in terms of both the curvature
and demographic parameters of systems of Engel curves
Nonparametric IV estimation of shape-invariant Engel curves
No full textThis paper concerns the identification and estimation of a shape-invariant Engel curve system with endogenous total expenditure. The shape-invariant specification involves a common shift parameter for each demographic group in a pooled system of Engel curves. Our focus is on the identification and estimation of both the nonparametric shape of the Engel curve and the parametric specification of the demographic scaling parameters. We present a new identification condition, closely related to the concept of bounded completeness in statistics. The estimation procedure applies the sieve minimum distance estimation of conditional moment restrictions allowing for endogeneity. We establish a new root mean squared convergence rate for the nonparametric IV regression when the endogenous regressor has unbounded support. Root-n asymptotic normality and semiparametric efficiency of the parametric components are also given under a set of Ѭow-level' sufficient conditions. Monte Carlo simulations shed lights on the choice of smoothing parameters and demonstrate that the sieve IV estimator performs well. An application is made to the estimation of Engel curves using the UK Family Expenditure Survey and shows the importance of adjusting for endogeneity in terms of both the curvature and demographic parameters of systems of Engel curves.
Engel-type subgroups and length parameters of finite groups
No full textLet g be an element of a finite group G and let Rn(g) be the subgroup generated by all the right Engel values [g,nx] over x?G. In the case when G is soluble we prove that if, for some n, the Fitting height of Rn(g) is equal to k, then g belongs to the (k+1)th Fitting subgroup Fk+1(G). For nonsoluble G, it is proved that if, for some n, the generalized Fitting height of Rn(g) is equal to k, then g belongs to the generalized Fitting subgroup F?f(k,m)(G) with f(k,m) depending only on k and m, where |g| is the product of m primes counting multiplicities. It is also proved that if, for some n, the nonsoluble length of Rn(g) is equal to k, then g belongs to a normal subgroup whose nonsoluble length is bounded in terms of k and m. Earlier similar generalizations of Baer's theorem (which states that an Engel element of a finite group belongs to the Fitting subgroup) were obtained by the first two authors in terms of left Engel-type subgroups.</p
Engel-type subgroups and length parameters of finite groups
No full textLet g be an element of a finite group G and let Rn(g) be the subgroup generated by all the right Engel values [g,nx] over x?G. In the case when G is soluble we prove that if, for some n, the Fitting height of Rn(g) is equal to k, then g belongs to the (k+1)th Fitting subgroup Fk+1(G). For nonsoluble G, it is proved that if, for some n, the generalized Fitting height of Rn(g) is equal to k, then g belongs to the generalized Fitting subgroup F?f(k,m)(G) with f(k,m) depending only on k and m, where |g| is the product of m primes counting multiplicities. It is also proved that if, for some n, the nonsoluble length of Rn(g) is equal to k, then g belongs to a normal subgroup whose nonsoluble length is bounded in terms of k and m. Earlier similar generalizations of Baer's theorem (which states that an Engel element of a finite group belongs to the Fitting subgroup) were obtained by the first two authors in terms of left Engel-type subgroups.</p
Electrapis krishnorum ENGEL 2001
No full textElectrapis cf. krishnorum MATERIAL: One specimen. Nontype. Female, worker caste, Nr. 501 (CJDL) labeled: ‘‘Nr. 501’’ // ‘‘ Electrapis sp., det. M. S. Engel’’. COMMENTS: This specimen represents a species near to E. krishnorum but has distinctive differences in both the wing venation as well as the mouthparts.Published as part of ENGEL, MICHAEL S., 2001, A Monograph Of The Baltic Amber Bees And Evolution Of The Apoidea (Hymenoptera), pp. 1 in Bulletin of the American Museum of Natural History 2001 (259) on page 1, DOI: 10.1206/0003-0090(2001)2592.0.CO;2, http://zenodo.org/record/537701
Some curiosites about the Engel method to estimate equivalence scales
No full textThis paper lends legitimacy to the food share as an indicator of welfare by demonstrating the conditions necessary in empirical work for the Engel method of estimating equivalence scales to provide an exact measure of welfare. In analogy to a money metric of utility, the Engel's food share is shown to be a “quantity metric of utility.”Engel method
London-Rome. Work in Process
No full textThree London practices have been selected to produce solo exhibitions in Rome, along with three Rome architects, that represent different ways of dealing with architectural research and practice in the two cities. This will culminate in a series of discussions in London in 2010 involving all the architects that took part in the project.
The London architects are AOC, Carmody Groarke and Witherford Watson Mann.
The Rome architects are MaO, IaN+ and Andrea Stipa.
The programme is curated by Marina Engel and Gabriele Mastrigli and organised in collaboration with the Fondazione MAXXI and the Ministero per i Beni e le Attività Cultural in Rome.
http://www.architecturefoundation.org.uk/programme/2009/london_rome-work-in-proces
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