The paper introduces the model confidence set (MCS) and applies it to the selection of forecasting models. A MCS is a set of models that is constructed such that it will contain the ’best’ forecasting model, given a level of confidence. Thus, a MCS is analogous to a confidence interval for a parameter. The MCS acknowledges the limitations of the data, such that uninformative data yields a MCS w...

We report results of the ultrasonic investigation of Ba1−xKxBiO3 superconducting (SC) single crystals for two potassium concentrations x ∼= 0.35 and x ∼= 0.47 in a wide temperature range including the normal and the SC states. An instability of the crystal lattice that develops above the superconducting phase transition leads to a softening of both the transverse c44 and the longitudinal c11 mo...

This paper investigates how a pair of signals about the type of the agent can be compared in the classical principal agent model with adverse selection. Signal comparison in this model has two distinctive features that make it di cult to directly apply the results from decision theory: timing of the game and the number of incentive compatibility constraint. The signal in the model takes the for...

Metal-carbon binary clusters generated by the laser vaporization of metal-doped carbon materials used for macroscopic production of endohedral metallofullerene or SWNTs were studied. Positive and negative clusters generated by the laser-vaporization supersonicexpansion cluster beam source were directly injected to the FT-ICR mass spectrometer. Depending on the metal species, the generated clust...

Functionally Graded Materials are inhomogeneous elastic bodies whose properties vary continuously with space. Hence consider a halfspace (x2 > 0) occupied by a special Functionally Graded Material made of an hexagonal (6mm) piezoelectric crystal for which the elastic stiffness c44, the piezoelectric constant e15, the dielectric constant ǫ11, and the mass density, all vary proportionally to the ...

Mixtures of poly(3,4-ethylenedioxythiophene) and polystyrenesulfonate (PEDOT:PSS) have high electrical conductivity when cast from aqueous suspensions in combination with a high boiling-point cosolvent dimethyl sulfoxide (DMSO). The electronic component of the thermal conductivity of these highly conducting polymers is of interest for evaluating their potential for thermoelectric cooling and po...

Segmented block copolymers based on dimerized fatty acids and poly(butylene terephthalate) (PBT) have been synthesized in the melt. Branched C36, C44 and C70 dimerized fatty acids with a low degree of unsaturation were used. The fraction of PBT was varied from 50 to 100 wt%. The resulting polymers were analysed with d.s.c, and d.m.a. The glass transition temperature (T~) increased with increasi...

The paper considers the role of econometrics in decision making under uncertainty. This leads to a focus on predictive distributions. The decision maker's subjective distribution is only partly speci"ed; it belongs to a set S of distributions. S can also be regarded as a set of plausible data-generating processes. Criteria are needed to evaluate procedures for constructing predictive distributi...

Mathematical expressions are derived for the far-field backscattering amplitude spectrum resulting from oblique insonification of an infinite, transversely isotropic elastic cylinder by a plane acoustic wave. The normal-mode solution is based on decoupling of the scalar potential representing the horizontally polarized shear wave from those of the compressional and vertically polarized waves. T...

The five independent elastic moduli of extruded rods of two thermotropic liquid crystalline polymers, Vectra B900 and Vectra A950, and the nine independent moduli of an injection-moulded bar of Vectra A950 have been measured by ultrasonic methods at 10 MHz. For Vectra B900, the sharp rise in the axial extensional modulus C33 and the moderate drop in the transverse modulus C 11 with increasing d...