Photoconduction and photocontrolled collective effects in the Peierls conductor TaS3_3

Light illumination of thin crystals of CDW conductor TaS$_3$ is found to result in dramatic changes of both linear ($G$) and nonlinear conduction. The increase of $G$ is accompanied by suppression of the collective conduction, growth of the threshold field $E_T$, and appearance of the switching and hysteretic behavior in the nonlinear conduction. The effects in the nonlinear conduction are associated with increase of CDW elasticity due to illumination that leads in particular to appearance of a relation $E_T\propto G^{1/3}$ expected for the one-dimensional pinning.Comment: RevTeX4, 4 pages, 4 postscript figures. Revised manuscript, new title, new Fig. 1, text corrections. Journal reference adde

Inquiry based science education in National Technical University "Kharkiv Polytechnic Institute" as a way to increase the popularity of natural and thechnical sciences

The article analyses the problem of reducing the rating of natural sciences in youth. Possible options for solving this issue are considered. Based on the experience of young scientists of the National Technical University "Kharkiv Polytechnic Institute" (NTU "KhPI"), it is indicated on perspective directions of interaction between higher education and secondary school in order to increase the popularity of natural and technical sciences. One of the points of contact can be the foundation of a creative space for children, which will be the focus of STEM education, and promote a positive image of the natural and technical sciences

System-level design for efficient execution of CNNs at the edge

A convolutional neural network (CNN) is a biologically inspired algorithm, highly capable at processing images and videos. Nowadays, CNNs are widely known and used: they watch our safety from the CCTV cameras, help doctors diagnose diseases, navigate cars, and do many other important things. One of the recent trends is to execute CNNs on edge devices: cameras, mobile phones, smart watches, etc. This helps to run CNNs faster and ensures privacy of the data used by the CNNs. This, however, is difficult to do. The problem is that the edge devices are small and often do not have enough resources to execute CNNs. In my dissertation, I study this problem and offer solutions for it. I propose specific manners to design and execute CNNs, so that they can run on edge devices efficiently.European Unions Horizon 2020 Research and Innovation project (grant agreement No. 780788)Computer Systems, Imagery and Medi

Criteria of a choice of the carrier

В статье изложена методика выбора перевозчика для использования грузовладельцами, экспедиторами и сделан вывод о создании системы оценок конкурентоспособности перевозчиков со стороны использования их услуг

The development of logistics infrastructure as a tool for the management of marine transportation

Логістична інфраструктура морегосподарського комплексу України характеризується досить низьким рівнем розвитку, істотними ціновими диспропорціями, високим рівнем монополізації. У зв'язку з цим пріоритетними заходами національної політики в напрямі розвитку галузі повинні стати: розвиток інфраструктури, формування рівноправних економічних відносин між його учасниками; інформаційне забезпечення учасників ринкової системи, створення національної маркетингової інформаційної системи

Phisicochemistry of alkaline-earth metals oxides surface

The surface state of alkaline-earth metals and magnesium oxides obtained by means of commercial and laboratory ways has been studied in this paper. A complex of methods has been used for identification, determination of a phase composition and morphology of the samples. The high basic character of surface centres has been shown with the help of pH-metry and adsorption of indicators methods. Acid-basic parameters (pHt, pHiis, etc.) can be used for the estimation of a general acid-basic state of metal oxides samples surface and for the supposition about different nature and strength of acid-basic centres as well as for the initial control in the process of acid basic properties of solid oxides surface properties evaluation