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  • Fixed-Point Theorems and Common Fixed-Point Theorems on Spaces Equipped With Vector-Valued Metrics 
    Hosseinzadeh, H.; Jabbari, A.; Razani, A. (Український математичний журнал, 2013)
    We show the existence of fixed points and common fixed points for single-valued generalized contractions on the spaces equipped with vector-valued metrics.
  • Fixed point theorems for multivalued generalized nonlinear contractive maps in partial metric spaces 
    Aghajani, A.; Allahyari, K. (Український математичний журнал, 2014)
    We prove some fixed-point results for multivalued generalized nonlinear contractive mappings in partial metric spaces, which generalize and improve the corresponding recent fixed-point results due to Ćirić [L. B. Ćirić, ...
  • Fixed point theory for weakly sequentially upper semicontinuous maps with applications to differential inclusions 
    Agarwal, R.P.; O'Regan, D. (Нелінійні коливання, 2002)
    We present new fixed point theorems for weakly sequentially upper semicontinuous maps. These results are then used to establish existence principles for second order differential equations and inclusions.
  • Flat (2,3,5)-Distributions and Chazy's Equations 
    Randall, M. (Symmetry, Integrability and Geometry: Methods and Applications, 2016)
    n the geometry of generic 2-plane fields on 5-manifolds, the local equivalence problem was solved by Cartan who also constructed the fundamental curvature invariant. For generic 2-plane fields or (2,3,5)-distributions ...
  • Flat electrode diameter effect on glow discharge structure and properties 
    Lisovskiy, V.A.; Osmayev, R.O.; Yegorenkov, V.D. (Вопросы атомной науки и техники, 2019)
    This paper is devoted to studying the effect of flat electrode diameter values on current-voltage characteristics and axial structure of the glow discharge in nitrogen. We have demonstrated that the discharge current ...
  • Flat extension and phantom homology 
    Bhattacharyya, R. (Algebra and Discrete Mathematics, 2017)
    Phantom homology arises in tight closure theory due to small non-exactness when `kernel' is not equal to `image' but `kernel' is in the tight closure of the `image'. In this paper we study a typical flat extension, which ...
  • Flatland Position-Dependent-Mass: Polar Coordinates, Separability and Exact Solvability 
    Mazharimousavi, H.; Mustafa, O. (Symmetry, Integrability and Geometry: Methods and Applications, 2010)
    The kinetic energy operator with position-dependent-mass in plane polar coordinates is obtained. The separability of the corresponding Schr¨odinger equation is discussed. A hypothetical toy model is reported and two exactly ...
  • Flatwise Compression Strength and Energy Absorption of Polyurethane Foam-Filled Lattice Core Sandwich Panels 
    Rostamiyan, Y.; Norouzi, H. (Проблемы прочности, 2016)
    In the present study, the effect of the polyurethane foam filled lattice core sandwich panel on the energy absorption and the compression strength was investigated. In the compression tests, it was found that the foam ...
  • Flexible 3D structure of Bos taurus tyrosyl-tRNA synthetase suggests the existence of the hinge mechanism provided by conservative Gly353 at interdomain linker 
    Pydiura, N.A.; Kornelyuk, A.I. (Вiopolymers and Cell, 2012)
    Mammalian tyrosyl-tRNA synthetase is composed of two structural modules: N-terminal catalytic miniTyrRS and non-catalytic cytokine-like C-terminal module connected by a flexible peptide linker. Till now, the 3D structure ...
  • Flexible composite scintillators based on ZnWO₄ micro- and nanopowders 
    Tinkova, V.S.; Yakubovskaya, A.G.; Tupitsyna, I.A.; Abashin, S.L.; Abashin, S.L.; Tretyak, S.O. (Технология и конструирование в электронной аппаратуре, 2019)
    Nano-sized and micro-sized ZnWO₄ powders were obtained by different methods: hydrothermal synthesis with microwave heating, molten salt method, solid-state synthesis and сrushing of bulk crystals. Their morphological ...
  • Flexible control of the export power flows by using DC link 
    Kyrylenko, O.V.; Pavlovsky, V.V.; Steliuk, A.O. (Технічна електродинаміка, 2015)
    The functional possibilities of modern direct current (DC) links for a power system control have been considered. The organization structure of the load frequency control in the interconnected power system of Ukraine is ...
  • Flexible electroluminescent panels 
    Vlaskin, V.I.; Vlaskina, S.I.; Koval, O.Yu.; Rodionov, V.E.; Svechnikov, G.S. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2007)
    Recently developed ac ZnS-powder electroluminescence (EL) devices have flexibility (thickness is about 60 µm) and can be multisegment, multicolor, as well as rolled and bent. All colors (white, blue, blue-green, green, ...
  • Flexible impulse response of the multi-bar linkage with heavy load 
    Feng Xianzhang; Cheng Junwei; Cui Yanmei; Jiang Zhiqiang (Functional Materials, 2016)
    It is based on the advantages of virtual prototyping technology, the dynamics mathematic model was established for the large mechanism by applying multi body dynamics theory. In order to adapt the users to special request ...
  • Flexural Fatigue Behavior of Cross-Ply Laminates: An Experimental Approach 
    Bezazi, A.R.; Mahi, A.El; Berthelot, J.-M.; Bezzazi, B. (Проблемы прочности, 2003)
    Within an experimental approach we describe the mechanical behavior of different resin-epoxy laminates reinforced with cross-ply Kevlar and glass fibers under the conditions of static and cyclic three-point bending. ...
  • Flexural Fracture Toughness and First-Crack Strength Tests of Steel Fiber-Silica Fume Concrete and Its Engineering Applications 
    Zhang, J.P.; Liu, L.M.; Zhu, Z.D.; Zhang, F.T.; Cao, J Z. (Проблемы прочности, 2018)
    The effect of a steel fiber and silica fume on the first-crack strength and the flexural toughness of concrete is evaluated. The ten sets of specimens with a steel fiber content of 0, 40, 50, and 60 g/m³ and steel fiber ...
  • Flight Seasonality of Dragonflies (Insecta, Odonata) in Northeastern Ukraine 
    Khrokalo, L.A.; Sheshurak, P.M. (2006)
    Data on seasonal flight periods of Odonata in Northeastern Ukraine (Kyiv, Chernigiv, Sumy, Chekasy and Kharkiv administrative regions) based on field observations and a review of material collected during ...
  • Flint Assemblage of Severynivka Hillfort 
    Stupak, D.V.; Telizhenko, S. A. (Археологія, 2019)
    In the paper flint finds from Severynivka hillfort are analysed. They represent several chronological periods. The main part of the collection belongs to the Upper Palaeolithic. Separate tools by their characteristics ...
  • Floating potential of dielectric target in plasma-beam discharge with magnet field 
    Dobrovol`s`kii, A.M.; Evsyukov, A.N.; Goncharov, A.A.; Protsenko, I.M. (Вопросы атомной науки и техники, 2006)
    We present the results of investigations of the floating potential compensation of dielectric target in selfsustained plasma beam discharge in the magnetic field. We use gridless single-stage plasma accelerators with closed ...
  • Flow and heat transfer in a partitioned enclosure 
    Kamil Kahveci; Ahmet Cihan; Dinser Akal (Промышленная теплотехника, 2006)
    Buoyancy driven flow and heat transfer in a partitioned square enclosure having differentially heated isothermal walls and adiabatic horizontal walls were studied numerically. The results show that as the Rayleigh number ...
  • Flow Characteristics of Metal with Phase Transformation and Prediction of Its Microstructure 
    Shirakashi, Т.; Yoshino, М. (Проблемы прочности, 2002)
    We propose a flow stress characteristic of SUS430F steel that takes in account the effects of temperature, strain rate and their deformation history. In the framework of this characteristic, the history effects of ...