Transaction cost theory has often been used to support to support the idea that information and communication technology (ICT) can reduce imperfection in the economic system. Electronic markets and hierarchies have repeatedly been described as solutions to inefficiencies in the organisation of transactions in complex and uncertain settings. Far from criticising this assumption, this paper highl...

This letter proposes two MMSE symbol-level precoding approaches considering a strict per antenna power constraint and PSK modulation for perfect imperfect channel state information scenarios. The proposed designs are formulated as second-order cone programs, allowing an optimal solution via the interior point method. Numerical results confirm that, scenario with information, outperform existing...

Several key results for set packing problems do not seem to be easily or even possibly transferable to set covering problems, although the symmetry between them. The goal of this paper is to introduce a nonidealness index by transferring the ideas used for the imperfection index defined by Gerke and McDiarmid [Graph imperfection, J. Combin. Theory Ser. B 83 (2001) 58–78]. We found a relationshi...

Neck retardation in stretching of ductile materials is promoted by strain hardening, strain-rate hardening and inertia. Retardation is usually beneficial because necking is often the precursor to ductile failure. The interaction of material behavior and inertia in necking retardation is complicated, in part, because necking is highly nonlinear but also because the mathematical character of the ...

In this paper, it is shown how one can employ the wavelet analysis to reconstruct data based only on the subset of information that differentiates the two fundamentally related time series: spot and futures indices. Such an analysis allows researchers to focus on examining the relationship between the two price series. Furthermore, it also enables examination and comparison of reconstructed pri...

To estimate the missing values of an attribute in the records of a dataset, all the information provided by the other attributes and the knowledge databases must be considered. However, the information elements could be imperfect (imprecise, possibilistic, probabilistic, etc.) and could have different measuring scales (quantitative, qualitative, ordinal, etc.) at the same time. Furthermore, the...

We present an approach of automatic seabed recognition from multiple views of side-scan sonar in the context of the project ASEMAR of the pole Mer Bretagne. We integrate detailed knowledge about each view: the nature of the seabed, the position and the uncertainty and the imprecision related to each information. To exploit information from multiple views, a fusion strategy for seabed recognitio...

The process of land cover change prediction is generally subjected to several types of imperfections which affect the reliability of decision about these changes. Several works in literature are carried out in an attempt to mitigate the issues caused by data related imperfections. Although new prediction models are created and improvement is done for the existing ones, both the imperfection rel...

This longitudinal study investigates whether finding benefits in cancer can be predicted by assimilative and accommodative coping strategies, general self-efficacy, and received social support. Self-efficacy and social support were measured 1 month after cancer surgery, coping strategies 6 months after surgery, and benefit finding 12 months after surgery. Ninety-seven patients with cancer compl...

Abstract: Consistent Imperfection Mode Method (CIMM) is a widely-used and effective numerical method to study the buckling capacity of spatial structure. CIMM used an “artificial” deformation instead of “artificial” load eccentricity to imitate the initial disturbance/imperfection for calculation of buckling load, and the basic mode obtained from linear buckling analysis could be used to simula...