Intelligent Power Consumption Management Systems

AbstractIn this paper we consider problems of creating and introducing intelligent management systems as one of the most important mechanism of increasing energy efficiency in industry. Operating principles of intelligent electric power distribution systems developed in MSTU «STANKIN» for AC and DC grids on industrial plants are described. Essential devices composing the systems are considered, their technical characteristics are described. Experimental results are presented

Wear-resistant Coatings From Electroerosive Micro- and Nanofraction Powders

The results of studies of relative stability of the cutting tool, restoration and strengthening by electricspark alloying with the using as electrode material the electroerosive tungsten powders are demonstrated. The efficiency of their application is shown

Wear-resistant Coatings From Electroerosive Micro- and Nanofraction Powders

The results of studies of relative stability of the cutting tool, restoration and strengthening by electricspark alloying with the using as electrode material the electroerosive tungsten powders are demonstrated. The efficiency of their application is shown

Factor models of cryptocurrency return within homogeneous groups

There is still no common understanding of whether cryptocurrencies should be classified as financial assets or as currencies. The ambiguity and versatility of the definition of the nature and functions of cryptocurrencies give rise to a variety of views on the methods of modeling their returns. Therefore, the issue of essence of cryptocurrencies is topical. The main subject of the study is the return of cryptocurrencies. The main aim of this work is to identify the determinants of return of homogeneous groups of cryptocurrencies. To achieve this goal, such tasks as the formation of various groups of cryptocurrencies, modeling of factors that take into account the peculiarities of the cryptocurrency market, and the evaluation of multifactor models of the Fama-French type for the analysis of cryptocurrency returns have been performed. Based on the collected daily data on capitalization, trading volumes and the price of cryptocurrencies for the period from 01.04.2014 to 29.05.2022, standard factors for cryptocurrencies based on market capitalization, trading volumes and the first momentum, as well as factors reflecting the return of the cryptocurrency market as a whole and the return of the stock market (S&P500) were constructed. The main method of estimating regressions is econometric modeling using the least squares method. The results of an empirical study indicate a positive relationship between the return of homogeneous groups of cryptocurrencies and the difference in the yields of the upper and lower 30% of cryptocurrencies in terms of market capitalization. Weighted return of the cryptocurrency market based on market capitalization (analogous to the S&P500) has a positive impact on the return of homogeneous groups of cryptocurrencies. The main conclusion of the study is that the transition to empirical analysis based on homogeneous groups of cryptocurrencies allowed us to obtain stable results indicating the absence of a relationship between the return of financial assets and the return of cryptocurrencies that are in a single homogeneous group. The scientific novelty of the work consists in presenting an assessment of the impact of modeled factors on various groups (portfolios) of cryptocurrencies in certain periods of time. This study recommends conducting a search for the determinants of cryptocurrency returns and subsequent analysis of their impact

Возможности конфокальной лазерной сканирующей микроскопии в неинвазивной диагностике развития злокачественных эпителиальных опухолей кожи в процессе прогрессирования дерматогелиоза

Most cases of malignant epithelial skin neoplasms including actinic keratosis and basal cell carcinoma, which are characterized by the most complicated course and numerous clinical and morphological options, involve dermatoheliosis progression. The risk of actinic keratosis transformation into basal cell carcinoma varies from 0.1% to 20% and up to 80% in cases of multiple AK lesion foci. A non-invasive method known as reflectance confocal laser scanning microscopy is the most promising one for the purposes of early diagnostics of signs pointing at epithelial skin neoplasm development and makes it possible to monitor the tumor in progress in vivo to diagnose the presence of a pool of squamous cells on a timely basis. The confocal laser scanning microscopy method provides high-contrast images of for any horizontal-oriented morphologic structures in the epidermis and upper dermis with a resolution comparable to those characteristic of traditional optical microscopy of skin tissue samples. According to our data obtained as a result of studying dynamic changes and morphologic structures in actinic keratosis foci (50 cases) using the confocal laser scanning microscopy method, we discovered a number of morphologic features, and their further analysis will distinguish the signs of progressing carcinogenesis in case of dermatoheliosis.Развитие злокачественных эпителиальных новообразований кожи, из которых наиболее сложным характером течения и многообразием клинико-морфологических вариантов отличаются актинический кератоз и базально-клеточная карцинома кожи, сопряжено в большинстве случаев с прогрессированием дерматогелиоза. Риск трансформации актинического кератоза в плоскоклеточный рак кожи варьируется от 0,1 до 20%, а в случаях множественных очагов поражения АК увеличивается до 80%. Неинвазивный метод отражательной конфокальной лазерной сканирующей микроскопии является наиболее перспективным в целях раннего выявления признаков развития эпителиальных новообразований кожи и позволяет проводить динамический мониторинг состояния опухолевого поля, позволяя in vivo своевременно диагностировать появление плоскоклеточного пула клеток. Метод конфокальной лазерной сканирующей микроскопии позволяет получить контрастные изображения всех морфологических структур эпидермиса и верхней части дермы, которые ориентированы в горизонтальной плоскости и имеют разрешение, сопоставимое с традиционной световой микроскопией биоптата кожи. По нашим данным, полученным на основании изучения динамики развития и морфологических структур очагов актинического кератоза (50 случаев) методом конфокальной лазерной сканирующей микроскопии, выявлен целый ряд морфологических особенностей, дальнейший анализ которых позволит выделить признаки прогрессирования канцерогенеза при дерматогелиозе

EFFECT OF CONIFEROUS EXTRACT ON POTATO PLANTS

Low doses of extracts from conifer trees, such as Novosil and Lariksin, increased the complex resistance of potato plants to diseases in vegetation period. Also they act as growth stimulation factors and promote the growth yield

Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at sqrt(s) = 7 TeV with the ATLAS experiment

This paper describes an analysis of the angular distribution of W->enu and W->munu decays, using data from pp collisions at sqrt(s) = 7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb^-1. Using the decay lepton transverse momentum and the missing transverse energy, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (ptw): 35 < ptw < 50 GeV and ptw > 50 GeV. Good agreement is found with theoretical predictions. For ptw > 50 GeV, the values of f0 and fL-fR, averaged over charge and lepton flavour, are measured to be : f0 = 0.127 +/- 0.030 +/- 0.108 and fL-fR = 0.252 +/- 0.017 +/- 0.030, where the first uncertainties are statistical, and the second include all systematic effects.Comment: 19 pages plus author list (34 pages total), 9 figures, 11 tables, revised author list, matches European Journal of Physics C versio

Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

The chi_b(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider (LHC) at sqrt(s) = 7 TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4 fb^-1, these states are reconstructed through their radiative decays to Upsilon(1S,2S) with Upsilon->mu+mu-. In addition to the mass peaks corresponding to the decay modes chi_b(1P,2P)->Upsilon(1S)gamma, a new structure centered at a mass of 10.530+/-0.005 (stat.)+/-0.009 (syst.) GeV is also observed, in both the Upsilon(1S)gamma and Upsilon(2S)gamma decay modes. This is interpreted as the chi_b(3P) system.Comment: 5 pages plus author list (18 pages total), 2 figures, 1 table, corrected author list, matches final version in Physical Review Letter

Search for displaced vertices arising from decays of new heavy particles in 7 TeV pp collisions at ATLAS

We present the results of a search for new, heavy particles that decay at a significant distance from their production point into a final state containing charged hadrons in association with a high-momentum muon. The search is conducted in a pp-collision data sample with a center-of-mass energy of 7 TeV and an integrated luminosity of 33 pb^-1 collected in 2010 by the ATLAS detector operating at the Large Hadron Collider. Production of such particles is expected in various scenarios of physics beyond the standard model. We observe no signal and place limits on the production cross-section of supersymmetric particles in an R-parity-violating scenario as a function of the neutralino lifetime. Limits are presented for different squark and neutralino masses, enabling extension of the limits to a variety of other models.Comment: 8 pages plus author list (20 pages total), 8 figures, 1 table, final version to appear in Physics Letters