Results 11 to 20 of about 5,593,327 (347)
SSRN Electronic Journal, 2008 On average, estimates of trade elasticities are smaller in aggregate data than at sector level. This is an artifact of aggregation. Estimations performed on aggregate data constrain sector elasticities to homogeneity, which creates a heterogeneity bias. The paper shows such a bias exists in two prominent approaches used to estimate elasticities, which
Imbs, Jean, Mejean, Isabelle
openaire +10 more sources
Minds and Machines, 2023 AbstractOptimization is about finding the best available object with respect to an objective function. Mathematics and quantitative sciences have been highly successful in formulating problems as optimization problems, and constructing clever processes that find optimal objects from sets of objects.
Cesare Carissimo, Marcin Korecki
openaire +3 more sources
Optimal Pricing for Optimal Transport [PDF]
Set-Valued and Variational Analysis, 2014 Suppose that $c(x,y)$ is the cost of transporting a unit of mass from $x\in X$ to $y\in Y$ and suppose that a mass distribution $ $ on $X$ is transported optimally (so that the total cost of transportation is minimal) to the mass distribution $ $ on $Y$.
Sedi Bartz, Simeon Reich
openaire +3 more sources
A two-stage multiobjective evolutionary ensemble learning for silicon prediction in blast furnace
Complex & Intelligent Systems, 2023 Silicon content of molten iron is an important indicator in the blast furnace ironmaking process. Accurate prediction of silicon content is very important for monitoring the operating condition of the blast furnace and the quality of the molten iron ...
Qiang Li +3 more
doaj +1 more source
Optimal pits and optimal transportation [PDF]
ESAIM: Mathematical Modelling and Numerical Analysis, 2015 In open pit mining, one must dig a pit, that is, excavate the upper layers of ground before reaching the ore. The walls of the pit must satisfy some geomechanical constraints, in order not to collapse. The question then arises how to mine the ore optimally, that is, how to find the optimal pit.
Ivar Ekeland +2 more
openaire +5 more sources
High-efficacy global optimization of antenna structures by means of simplex-based predictors
Scientific Reports, 2023 Design of modern antenna systems has become highly dependent on computational tools, especially full-wave electromagnetic (EM) simulation models. EM analysis is capable of yielding accurate representation of antenna characteristics at the expense of ...
Slawomir Koziel +1 more
doaj +1 more source
PLoS ONE, 2008 Semelparous organisms have a simple life cycle characterized by immediate death after reproduction. We assume that semelparous life histories can be separated into a juvenile non-reproductive period followed by an adult period during which reproduction is possible. We derive formulae for the optimal age and size at reproduction and for the optimal size
Vaupel, James W. +2 more
openaire +4 more sources
Optimising the laser-welded butt-joints of medium carbon steel using RSM [PDF]
, 2005 The optimization capabilities in design-expert software were used to optimise the keyhole parameters (i.e. maximize penetration (P) and minimise the heat input, width of welded zone, (W) and width of heat affected zone (WHAZ)) in CW CO2 laser butt ...
Benyounis, Khaled +2 more
core +1 more source
Metrology and Measurement Systems, 2016 A simulation-based optimization approach to design of phase excitation tapers for linear phased antenna arrays is presented. The design optimization process is accelerated by means of Surrogate-Based Optimization (SBO); it uses a coarse-mesh surrogate of
Kozieł Sławomir +2 more
doaj +1 more source
Two-stage hybrid algorithm for recognition of industrial slab numbers with data quality improvement
Complex & Intelligent Systems, 2022 As the unique recognition of each slab, the accurate recognition of slab number is especially critical for the hot rolling production process. However, the collected data are often of low quality due to poor production environment conditions, making ...
Qingqing Liu +2 more
doaj +1 more source