Comparative evaluation of quality characteristics of process equipment

A consumer estimates the product by two criteria: quality and price. Quality is a set of object properties that characterize its ability to satisfy statutory requirements or supposed needs of a person. The statutory requirements are needs that are regulated by normative legal acts; the supposed needs are needs that should be identified by market research. Objective features of the product occur during its development, manufacturing, storage, usage and have the valuation - price. Quality and price are two interrelated categories inherent in any product

Methods of optimization of economic systems as a mechanism for the effectiveness of training it professionals in high school

The article deals with in-depth and comprehensive study of the techniques of economic systems optimization, identification of the theoretical foundations, trends, pedagogical conditions and means of forming the subject competence of students of information directions of bachelors degree program. A model of an individual trajectory of the natural sciences and professional training on the example of an in-depth development of economic systems optimization methods was proposed and the mechanism of its implementation was considered. As the result of the taken study the authors have proposed and justified the application of a set of professionally-designed tasks of training for IT professionals in the field of economics, methods of optimization of economic systems as a mechanism for the effectiveness of training IT professionals, methods of mathematical modeling, in order to improve teaching methods, implementation of more effective mechanisms for training of IT professionals in the learning process are discussed. Methods of optimization of economic systems are important components of the training of future analysts and IT professionals. The use of traditional teaching methods in modern society is no longer enough to train IT professionals in the field of economy. There is a necessity to improve teaching methods, to introduce more effective ones into the educational process, managing the process of assimilation of knowledge, forming ability and skills, which are aimed at developing of a sustained conscious positive attitude towards their profession of future IT specialist, independent decision-making with problematic tasks, related to the exercise of professional functions

Electron-spin-resonance in the doped spin-Peierls compound Cu(1-x)Ni(x)GeO3

ESR-study of the Ni-doped spin-Peierls compound CuGeO3 has been performed in the frequency range 9-75 GHz. At low temperatures the g-factor is smaller than the value expected for Cu- and Ni-ions. This anomaly is explained by the formation of magnetic clusters around the Ni-ions within a nonmagnetic spin-Peierls matrix. The transition into the AFM-state detected earlier by neutron scattering for doped samples was studied by means of ESR. For x=0.032 a gap in the magnetic resonance spectrum is found below the Neel temperature and the spectrum is well described by the theory of antiferromagnetic resonance based on the molecular field approximation. For x=0.017 the spectrum below the Neel point remained gapless. The gapless spectrum of the antiferromagnetic state in weekly doped samples is attributed to the small value of the Neel order parameter and to the magnetically disordered spin-Peierls background.Comment: 16 pages, LATEX, 12 figures, submitted to Journal of Physics : Condensed Matte

Magnetic Resonance of the Intrinsic Defects of the Spin-Peierls Magnet CuGeO3

ESR of the pure monocrystals of CuGeO3 is studied in the frequency range 9-75 GHz and in the temperature interval 1.2-25 K. The splitting of the ESR line into several spectral components is observed below 5 K, in the temperature range where the magnetic susceptibility is suppressed by the spin-Peierls dimerization. The analysis of the magnetic resonance signals allows one to separate the signals of the S=1/2- and S=1 defects of the spin-Peierls phase. The value of g-factor of these signals is close to that of the Cu-ion. The additional line of the magnetic resonance is characterized by an anomalous value of the g-factor and by the threshold-like increase of the microwave susceptibility when the microwave power is increasing. The ESR signals are supposingly attributed to two types of the planar magnetic defects, arising at the boundaries of the domains of the spin-Peierls state with the different values of the phase of the dimerization.Comment: LATEX-text, 12 PS-figures, typos corrected, LATEX-style change

EPR spectra of a GdMnO3 thin film on a SrTiO3 substrate

Electron paramagnetic resonance (EPR) spectra of a GdMnO3/SrTiO3 thin film in the X band have been measured in the temperature interval from 200 to 450 K. Signals from two types of paramagnetic centers have been observed in the spectra. The first paramagnetic center is a subsystem of Gd3+ ions, in the EPR spectrum of which the fine structure lines are resolved below 350 K. The second paramagnetic center is a system of manganese and gadolinium ions, in the EPR spectrum of which an exchange-narrowed line is observed with the width ΔH several times less than the width ΔH of an exchange-narrowed line observed in the GdMnO3 single crystal. Unusual magnetic properties are due to the mismatch of the lattice parameters of the GdMnO3 thin film and the SrTiO3 substrate. © 2013 Pleiades Publishing, Inc

Magnetization of manganite thin films on ferroelectric substrates

© 2016 Elsevier B.V.Here we report the magnetic susceptibility measurements of magnetron sputtered orthorhombic manganite RMnO3 (R=Yb, Gd) thin films deposited on dielectric LaAlO3 and ferroelectric SrTiO3, LiNbO3 substrates. We observed that all of investigated o-RMnO3 films show a splitting in the temperature dependence of ZFC and FC magnetization curves. We found that the substrate can impact on the splitting temperature ZFC-FC curves and absolute value of the magnetization of thin films

Magnetization of manganite thin films on ferroelectric substrates

© 2016 Elsevier B.V.Here we report the magnetic susceptibility measurements of magnetron sputtered orthorhombic manganite RMnO3 (R=Yb, Gd) thin films deposited on dielectric LaAlO3 and ferroelectric SrTiO3, LiNbO3 substrates. We observed that all of investigated o-RMnO3 films show a splitting in the temperature dependence of ZFC and FC magnetization curves. We found that the substrate can impact on the splitting temperature ZFC-FC curves and absolute value of the magnetization of thin films

Electron paramagnetic resonance studies of GdMnO 3 single crystal and thin film deposited onto a LaAlO 3 substrate

Electronic paramagnetic resonance (EPR) spectra of a GdMnO 3 single crystal and GdMnO 3/LaAlO 3 thin film have been measured at X- and Q-band frequencies in the temperature range from 4. 2 to 300 K. It is found that the EPR spectrum of a GdMnO 3 single crystal consists of only one broad exchange-narrowed line. Unusual magnetism is observed at the interface between the GdMnO 3 thin film and LaAlO 3 substrate, where it is possible to see the fine structure of the EPR spectrum for a Gd 3+ ion. The parameters characterizing the fine structure related to the Gd 3+ ion in the GdMnO 3 film deposited onto the LaAlO 3 substrate are determined. © 2012 Pleiades Publishing, Ltd

Magnetic and dielectric properties of o-LuFeO<inf>3</inf>/SrTiO<inf>3</inf>

© 2016 Published under licence by IOP Publishing Ltd. Here we present the investigation of the orthorhombic o-LuFeO 3 thin film grown on SrTiO 3 (001) substrate. Temperature dependencies of magnetization measured in magnetic fields 1000 Oe and 2000 Oe were described in the assumption that ferromagnetic correlated regions are presented in samples together with the paramagnetic phase. Additional argument in favor of the ferromagnetic regions existence in o-LuFeO 3 is the magnetic hysteresis curve measured at T=5 and 100K. The temperature dependences of dielectric response were measured and analyzed