Linear sets and MRD-codes arising from a class of scattered linearized polynomials

Journal of Algebraic Combinatorics - A class of scattered linearized polynomials covering infinitely many field extensions is exhibited. More precisely, the q-polynomial over $${{\mathbb...     

Multivariate Reversed Hazard Rates and Inactivity Times of Systems

Methodology and Computing in Applied Probability - The family of the multivariate conditional hazard rate functions often reveals to be a convenient tool to describe the joint probability...     

trans-Hydroboration of Propargyl Alcohol Derivatives and Related Substrates

The hydroboration of internal alkynes with pinacolborane as the reagent catalyzed by [Cp*RuCl]₄ results in good to excellent levels of regio- as well as stereoselectivity, provided that the triple bond bears one linear and one singly-branched substituent. In such cases, the reaction follows an unusual trans-addition mode and places the boron entity distal to the branching point. The resulting alkenyl boronates, which are difficult to make otherwise, can be engaged in numerous enabling downstream processes.     

Interactions between cyclodextrins and fluorescent T-2 and HT-2 toxin derivatives: a physico-chemical study

T-2 and HT-2 toxins are mycotoxins produced by several Fusarium species that are commonly found in various cereal grains, including oats, barley, wheat and maize. Intake estimates indicate that the presence of these mycotoxins in the diet can be of concern for public health. In this work, the inclusion processes occurring between fluorescent anthracene-derivatives of T-2 and HT-2 toxins and different cyclodextrin (CD) molecules were investigated in aqueous solutions by means of UV–Vis absorption, fluorescence emission and dynamic light scattering. Binding constant values and chemico-physical parameters were calculated. It was found that β-CDs give stronger inclusion reactions with both T-2 and HT-2 derivatives, as stated by important emission intensity increments. Such interactions were found to be fundamentally enthalpy-driven. Among β-CDs, the effect of the methylation at hydroxyl groups was tested: as a result, the di-methyl form of β-CD was found to induce the best fluorescence intensity enhancements.     

Some properties and applications of cumulative Kullback–Leibler information

The cumulative Kullback–Leibler information has been proposed recently as a suitable extension of Kullback–Leibler information to the cumulative distribution function. In this paper, we obtain various results on such a measure, with reference to its relation with other information measures and notions of reliability theory. We also provide some lower and upper bounds. A dynamic version of the cumulative Kullback–Leibler information is then proposed for past lifetimes. Furthermore, we investigate its monotonicity property, which is related to some new concepts of relative aging. Moreover, we propose an application to the failure of nanocomponents. Finally, in order to provide an application in image analysis, we introduce the empirical cumulative Kullback–Leibler information and prove an asymptotic result. Copyright © 2015 John Wiley & Sons, Ltd.     

Automatic inspection with optical position sensors

The aim of this paper is to present the optical position sensors (PSD) based on a lateral photoeffect with respect to its characteristics. The optical triangulation (OT) being exploited as the sensing technique will be examined.Three experiments employing PSD and OT techniques for monitoring surface profiles in mechanical, photographic, and automotive fields are presented. They are sources for understanding the potential of these detectors as simple, efficient, and readily available means of automatic inspection in a wide range of fields of application.     

Real time analysis of diffraction patterns, at extremely low light levels

By analyzing previous experiments with statistically independents photons, just one concerns the diffraction pattern; it was revealed with photographic technique. The present describes an experiment which produces a diffraction pattern at very low intensity radiation consisting of statistically independent photons. This pattern was revealed in real time by using image intensification. Several photodetection arrangements utilizing image intensifier tubes and image storage devices have been tested and the results presented. This study involved the evaluation of the error probability in photons overlap at any time. The linearity dependence between light intensity and bright pattern diffraction was verified.