31 research outputs found
Neuropathology of epileptic encephalopathies and non-paroxysmal epileptic disorders and principles of their treatment
No full textBased on his many year's studies and the data available in the literature, the author considers the neuropathophysiological mechanisms responsible for the damaging action of epileptic discharges on basic brain functions and provides evidence for the views of prolonged non-paroxysmal psychoneurological epileptic disorders and epileptic encephalopathies. He shows the consistency of clinical manifestations of the site of cerebral epileptic discharges on the basis of an update on their functional localization and functional neuroimaging. Computerized three-dimensional electroencephalography (EEG) data mapping is shown to play a crucial role in the understanding of the mechanisms, diagnosis, and treatment of non-paroxysmal epileptic disorders. Based on the concepts that epileptiform activity plays a neuropathological role in the genesis of non-paroxysmal epileptic disorders, the author substantiates the use of agents that are effective in suppressing EEG epileptiform activity (valproate, levetiracetam, and lamotrigine) as a first-choice drug and caution when giving the antiepileptics that can aggravate epileptiform activity and clinical manifestations
A novel method of stylometry based on the statistic of numerals
No full textA new method of statistical analysis of texts is suggested. The frequency distribution of the first significant digits in numerals of English-language texts is considered. We have taken into account cardinal as well as ordinal numerals expressed both in figures, and verbally. To identify the author's use of numerals, we previously deleted from the text all idiomatic expressions and set phrases accidentally containing numerals, as well as itemizations and page numbers, etc. Benford's law is found to hold approximately for the frequencies of various first significant digits of compound literary texts by different authors; a marked predominance of the digit 1 is observed. In coherent authorial texts, characteristic deviations from Benford's law arise which are statistically stable significant author peculiarities that allow, under certain conditions, to consider the problem of authorship and distinguish between texts by different authors. The text should be large enough (at least about 200 kB). At the end of {1, 2, ⋯, 9} digits row, the frequency distribution is subject to strong fluctuations and thus unrepresentative for our purpose. The aim of the theoretical explanation of the observed empirical regularity is not intended, which, however, does not preclude the applicability of the proposed methodology for text attribution. The approach suggested and the conclusions are backed by the examples of the computer analysis of works by W.M. Thackeray, M. Twain, R. L. Stevenson, J. Joyce, sisters Bront.e, and J.Austen. On the basis of technique suggested, we examined the authorship of a text earlier ascribed to L. F. Baum (the result agrees with that obtained by different means). We have shown that the authorship of Harper Lee's "To Kill a Mockingbird" pertains to her, whereas the primary draft, "Go Set a Watchman", seems to have been written in collaboration with Truman Capote. All results are confirmed on the basis of parametric Pearson's chi-squared test as well as non-parametric Mann-Whitney U test and Kruskal-Wallis test. Copyright © 2018 Institute of Computer Science
Generalized epilepsies: current conceptions and therapeutic approaches
No full textThe concepts of generalized epilepsy have recently undergone considerable changes: the features of focality in generalized epilepsies and the typical features of idiopathic generalized epilepsies in focal epilepsies have been revealed. The closeness of these forms is also supported by genetic studies when one genetic abnormality shows diverse focal and generalized phenotypes in different members of one family. In this connection, the Commission on Classification and Terminology of the International League Against Epilepsy proposes to abandon the identification of the forms of epilepsy on the principle of focal and generalized seizures, by changing it for the notion Tneural network that involves different local and common brain mechanisms in each individual case. These neuropathophysiological concepts give an insight into why the pharmacotherapy based on a model of focal and generalized seizures is ineffective or occasionally even aggravates the disease. The current approach makes it preferential to choose a broad-spectrum drug that is effective in any types of seizures and forms of epilepsy, by taking into account its efficacy, dose titration rate, dosage form, side effects, and cost. Among broad-spectrum agents (valproate (VPA), levetiracetam, lamotrigine, topiramate), the original controlled release dosage forms of VPA (Depakine chrono and Depakine chromosphere) have a priority as first-line drugs for the initial treatment of generalized epilepsies. The paper considers the basic pharmacokinetic and pharmacodynamics properties of the drugs for the treatment of epilepsy and the algorithms of therapy for individual entities of generalized epilepsy
Journal of Experimental and Theoretical Physics V. 96, I. 02
No full textJournal of Experimental and Theoretical Physics -- February 2003
Volume 96, Issue 2, pp. 165-382
GRAVITATION, ASTROPHYSICS
Nonself-Similar Regimes of Isothermal Collapse of Protostellar Clouds
A. E. Dudorov and A. G. Zhilkin
pp. 165-171 Full Text: PDF (272 kB)
NUCLEI, PARTICLES, AND THEIR INTERACTION
Investigation of Liquid Fluoropolymers as Possible Materials for Low-Temperature Liquid-Wall Chambers for Ultracold Neutron Storage
Yu. N. Pokotilovski
pp. 172-179 Full Text: PDF (94 kB)
The Vacuum–Vacuum Amplitude and Bogoliubov Coefficients
A. I. Nikishov
pp. 180-192 Full Text: PDF (153 kB)
(Quasi)elastic Large-Angle Electron–Muon Scattering in the Two-Loop Approximation: Contributions of the Eikonal Type
V. V. Bytev, E. A. Kuraev, and B. G. Shaikhatdenov
pp. 193-201 Full Text: PDF (116 kB)
ATOMS, SPECTRA, RADIATION
Two-Wave Stimulated Raman Scattering in the Field of Intense Radiation Resonant to the Raman Transition
V. P. Kochanov and Yu. V. Bogdanova
pp. 202-221 Full Text: PDF (2645 kB)
Transient Scattering of Resonance Radiation in a Two-Level System
A. A. Panteleev, Vl. K. Roerich, and A. N. Starostin
pp. 222-240 Full Text: PDF (434 kB)
Generation of Intense Pulsed Low-Kinetic-Energy Molecular Beams
G. N. Makarov
pp. 241-246 Full Text: PDF (72 kB)
PLASMA, GASES
Bound States of the Josephson Degrees of Freedom and Trap Oscillations
L. A. Manakova
pp. 247-256 Full Text: PDF (110 kB)
SOLIDS
Electronic Properties
Electronic Structure and Phase Separation in LaxMnO3 Films (0.83 <= x <= 1.10): Optical and Magnetooptical Data
Yu. P. Sukhorukov, N. N. Loshkareva, E. A. Gan'shina, E. V. Mostovshchikova, I. K. Rodin, A. R. Kaul, O. Yu. Gorbenko, A. A. Bosak, A. S. Moskvin, and E. V. Zenkov
pp. 257-267 Full Text: PDF (161 kB)
Quantum Theory of Conductivity of Spatially Inhomogeneous Systems
I. G. Lang, L. I. Korovin, J. A. de la Cruz-Alcaz, and S. T. Pavlov
pp. 268-285 Full Text: PDF (223 kB)
On the Theory of Ferromagnetism in Transition Metals with Cubic Symmetry
R. O. Zaitsev
pp. 286-300 Full Text: PDF (181 kB)
Extremum of the Percolation Cluster Surface
P. S. Grinchuk and O. S. Rabinovich
pp. 301-309 Full Text: PDF (109 kB)
Coherent Electron–Hole BCS State: Study of Dynamics
P. P. Vasil'ev, H. Kan, H. Ohta, and T. Hiruma
pp. 310-314 Full Text: PDF (81 kB)
Resonance Double Magnetic Bremsstrahlung in a Strong Magnetic Field
P. I. Fomin and R. I. Kholodov
pp. 315-320 Full Text: PDF (76 kB)
Zeeman Effect for Holes in a Ge/Si System with Quantum Dots
A. V. Nenashev, A. V. Dvurechenskii, and A. F. Zinov'eva
pp. 321-330 Full Text: PDF (187 kB)
The Effect of Colossal Magnetoresistance in SmCu3Mn4O12 Perovskite-Like Oxide
L. S. Lobanovsky and I. O. Troyanchuk
pp. 331-334 Full Text: PDF (56 kB)
Damping of Coupled Phonon–Plasmon Modes
L. A. Falkovsky
pp. 335-339 Full Text: PDF (69 kB)
MISCELLANEOUS
Quantum Recognition of Eigenvalues, Structure of Devices, and Thermodynamic Properties
Yu. I. Ozhigov
pp. 340-354 Full Text: PDF (174 kB)
REVIEWS
Density of Prelocalized States in Mesoscopic NS Systems
P. M. Ostrovsky, M. A. Skvortsov, and M. V. Feigel'man
pp. 355-382 Full Text: PDF (334 kB)Archived web conten
Physics of the Solid State V. 44, I. 08
No full textPhysics of the Solid State -- August 2002
Volume 44, Issue 8, pp. 1407-1610
PROCEEDINGS OF THE XI FEOFILOV WORKSHOP "SPECTROSCOPY OF CRYSTALS ACTIVATED BY RARE-EARTH AND TRANSITION-METAL IONS"
Spectroscopy of Dielectric Nanocrystals Doped by Rare-Earth and Transition-Metal Ions
S. P. Feofilov
pp. 1407-1414 Full Text: PDF (113 kB)
Clusters of Group-III Ions in Activated Fluorite-Type Crystals
S. A. Kazanskii and A. I. Ryskin
pp. 1415-1425 Full Text: PDF (172 kB)
Parameters of Light-Induced Charge Transfer Processes in Photorefractive Crystals
O. F. Schirmer, C. Veber, and M. Meyer
pp. 1426-1432 Full Text: PDF (120 kB)
Structure and Charge Transfer Dynamics of Uranyl Ions in Boron Oxide and Borosilicate Glasses
G. K. Liu, H. Z. Zhuang, J. V. Beitz, C. W. Williams, and V. S. Vikhnin
pp. 1433-1439 Full Text: PDF (101 kB)
Charge Transfer Bands in the Eu3+ Luminescence Excitation Spectra of Isomeric Europium Pyridine-Dicarboxylates
L. N. Puntus, V. F. Zolin, V. A. Kudryashova, V. I. Tsaryuk, J. Legendziewicz, P. Gawryszewska, and R. Szostak
pp. 1440-1444 Full Text: PDF (84 kB)
Photoluminescence and Tunneling Charge Transfer in CaF2 : RE2+–CdF2 Superlattices on Si(111)
S. V. Gastev, S. É. Ivanova, N. S. Sokolov, S. M. Suturin, and E. M. Langer
pp. 1445-1449 Full Text: PDF (74 kB)
Charge Ordering and Lattice Dimerization in alpha[prime]-NaV2O5: One or Two Phase Transitions?
M. N. Popova, A. B. Sushkov, E. P. Chukalina, E. A. Romanov, M. Isobe, and Y. Ueda
pp. 1450-1454 Full Text: PDF (88 kB)
Exciton Luminescence in Orthorhombic-Structure MnF2 Epitaxial Films
N. S. Sokolov, O. V. Anisimov, A. G. Banshchikov, S. V. Gastev, C. Dyroff, R. J. Reeves, X. Wang, and W. M. Yen
pp. 1455-1458 Full Text: PDF (75 kB)
Luminescence of Impurity-Bound Excitons in Corundum
B. R. Namozov, V. A. Vetrov, S. M. Muradov, and R. I. Zakharchenya
pp. 1459-1462 Full Text: PDF (66 kB)
Exciton–Magnon Interactions in NicMg1 – cO Single Crystals
N. Mironova-Ulmane, V. Skvortsova, A. Kuzmin, and I. Sildos
pp. 1463-1467 Full Text: PDF (85 kB)
Jahn–Teller Effect in Low-Spin Ni3+ in the LaAlO3 Ceramic
T. A. Ivanova, V. E. Petrashen', N. V. Chezhina, and Yu. V. Yablokov
pp. 1468-1470 Full Text: PDF (49 kB)
The Influence of Local Distortions on the Static and Dynamic Properties of Copper and Silver Eightfold-Coordinated Jahn–Teller Complexes in Mixed Crystals with a Fluorite-Type Structure
V. A. Ulanov, M. M. Zaripov, and E. P. Zheglov
pp. 1471-1479 Full Text: PDF (105 kB)
The Plasticity of the Cu(H2O)2 + 6 Jahn–Teller Complex Affected by Lattice Strains and Cooperative Interactions
M. A. Augustyniak-Jabllokow, K. Lukaszewicz, A. Pietraszko, V. E. Petrashen, and Yu. V. Yablokov
pp. 1480-1483 Full Text: PDF (63 kB)
Ab initio Theory of the Electronic Structure and Spectra of Impurity nl Ions
N. A. Kulagin
pp. 1484-1490 Full Text: PDF (73 kB)
Anharmonic T [direct-product] epsilon Jahn–Teller Coupling in LiCaAlF6 : Cr3+
Gh. E. Draganescu, C. N. Avram, and N. M. Avram
pp. 1491-1495 Full Text: PDF (70 kB)
Structural Asymmetry of Kramers Clusters as a Consequence of Time-Reversal Symmetry
I. I. Geru
pp. 1496-1499 Full Text: PDF (49 kB)
Induced Resonant Transparency of Magnetic Materials for Gamma Radiation: Propagation Dynamics
A. V. Mitin and D. A. Roganov
pp. 1500-1504 Full Text: PDF (66 kB)
Quantum Interference of Mössbauer Gamma-Radiative Transitions in Magnetic Materials
É. K. Sadykov, L. L. Zakirov, A. A. Yurichuk, and V. V. Arinin
pp. 1505-1509 Full Text: PDF (69 kB)
Nonequilibrium Dynamic Effects within a Quantum Droplet Model of Ising Spin Glass
R. V. Saburova, E. A. Yanvarev, and V. G. Sushkova
pp. 1510-1512 Full Text: PDF (37 kB)
Structure and Dynamics of the Pure and Mixed Fluorites MeF2 (Me = Ca, Sr, Ba, and Pb)
A. E. Nikiforov, A. Yu. Zakharov, V. A. Chernyshev, M. Yu. Ougryumov, and S. V. Kotomanov
pp. 1513-1518 Full Text: PDF (64 kB)
Phase Separation and Manifestation of Nanoscopic Nonuniformities in the Optical Spectra of Manganites
A. S. Moskvin, E. V. Zenkov, Yu. D. Panov, N. N. Loshkareva, Yu. P. Sukhorukov, and E. V. Mostovshchikova
pp. 1519-1521 Full Text: PDF (48 kB)
Nanoscale Inhomogeneities and Optical Properties of Doped Cuprates
A. S. Moskvin, E. V. Zenkov, and Yu. D. Panov
pp. 1522-1525 Full Text: PDF (74 kB)
Experimental and Theoretical Studies of Lattice Distortions Caused by Charged 3d Impurities in II–IV Semiconductors
V. I. Sokolov, N. B. Gruzdev, E. A. Shirokov, V. N. Starovoitova, A. V. Sokolov, A. N. Kislov, and I. A. Nekrasov
pp. 1526-1528 Full Text: PDF (44 kB)
Anomalous Abrupt Resonance-Type Change in the Low-Temperature Heat Conductivity in II–VI Semiconductors Doped with 3d Transition Metals
A. T. Lonchakov, N. B. Gruzdev, and V. I. Sokolov
pp. 1529-1531 Full Text: PDF (53 kB)
On the Nature of the Energy Gap in Ytterbium Dodecaboride YbB12
T. S. Al'tshuler and M. S. Bresler
pp. 1532-1535 Full Text: PDF (58 kB)
Effect of Defects on Ytterbium Ion Valency in YbB12
T. S. Al'tshuler, M. S. Bresler, Yu. V. Goryunov, F. Iga, and T. Takabatake
pp. 1536-1539 Full Text: PDF (61 kB)
High Coercivity Powders Based on Sm–Fe–Ta–N Prepared by a Novel Technique
K. Zuzek, G. Drazic, P. J. McGuiness, and S. Kobe
pp. 1540-1543 Full Text: PDF (345 kB)
Magnetic Properties of the Ising Dipole Ferromagnet LiTbF4
I. V. Romanova, B. Z. Malkin, I. R. Mukhamedshin, H. Suzuki, and M. S. Tagirov
pp. 1544-1549 Full Text: PDF (89 kB)
Isotropic and Anisotropic Exchange Interactions in the Orbitally Degenerate Excited (4A2 × 2T2) State of a Cr3+ Ion Pair Possessing D3h Symmetry
V. V. Bannikov and V. Ya. Mitrofanov
pp. 1550-1552 Full Text: PDF (37 kB)
Local Structure of Titanium Pair Centers in SrF2 Crystals: EPR and ENDOR Spectroscopic Studies
I. I. Fazlizhanov, V. A. Ulanov, M. M. Zaripov, and R. M. Eremina
pp. 1553-1557 Full Text: PDF (94 kB)
Luminescence of Tl+ Ions in a KZnF3 Crystal
L. K. Aminov, S. I. Nikitin, N. I. Silkin, and R. V. Yusupov
pp. 1558-1563 Full Text: PDF (83 kB)
Infrared Spectroscopy of the Nd3+ Ion in Nd2BaCuO5 and Nd2BaZnO5
S. A. Klimin, M. N. Popova, and B. V. Mill
pp. 1564-1569 Full Text: PDF (197 kB)
METALS AND SUPERCONDUCTORS
The Mechanism of 4f–5d Hybridization in Sm1 – xRxS (R = Ce, Gd, and Y) Systems with Intermediate Valence
A. E. Sovestnov, V. A. Shaburov, Yu. P. Smirnov, A. V. Tyunis, and A. V. Golubkov
pp. 1570-1573 Full Text: PDF (53 kB)
SEMICONDUCTORS AND DIELECTRICS
Defect Samarium Ions and Electromotive-Force Generation in SmS
V. V. Kaminskii, A. V. Golubkov, and L. N. Vasil'ev
pp. 1574-1578 Full Text: PDF (69 kB)
Specific Features of Anion Transfer in Superionic Conductors Based on MF2 (M = Pb and Cd)
N. I. Sorokin, B. P. Sobolev, and M. W. Breiter
pp. 1579-1586 Full Text: PDF (107 kB)
Spin–Spin Interaction of Dy3+ Ions in KY(WO4)2
I. M. Krygin, A. D. Prokhorov, V. P. D'yakonov, M. T. Borowiec, and H. Szymczak
pp. 1587-1596 Full Text: PDF (133 kB)
MAGNETISM AND FERROELECTRICITY
Effect of Electric Field on the Dielectric Permittivity of Betaine Phosphite Crystals in the Paraelectric Phase
E. V. Balashova, V. V. Lemanov, and A. Klöpperpieper
pp. 1597-1603 Full Text: PDF (92 kB)
FULLERENES AND ATOMIC CLUSTERS
Determination of the Activation Energy for Complicated Relaxation Processes
A. I. Slutsker, Yu. I. Polikarpov, and K. V. Vasil'eva
pp. 1604-1610 Full Text: PDF (88 kB)Archived web conten
Physics of the Solid State V. 44, I. 10
No full textPhysics of the Solid State -- October 2002
Volume 44, Issue 10, pp. 1809-2012
REVIEWS
Electromagnetic and Fluctuation-Electromagnetic Forces of Interaction of Moving Particles and Nanoprobes with Surfaces: A Nonrelativistic Consideration
G. V. Dedkov and A. A. Kyasov
pp. 1809-1832 Full Text: PDF (251 kB)
METALS AND SUPERCONDUCTORS
Band Structure of ZrB2, VB2, NbB2, and TaB2 Hexagonal Diborides: Comparison with Superconducting MgB2
I. R. Shein and A. L. Ivanovskii
pp. 1833-1839 Full Text: PDF (288 kB)
Effect of Ion Irradiation on the Upper Critical Magnetic Field in Electronic and Hole d-Wave Superconductors
N. P. Shabanova, S. I. Krasnosvobodtsev, A. V. Varlashkin, and A. I. Golovashkin
pp. 1840-1844 Full Text: PDF (77 kB)
SEMICONDUCTORS AND DIELECTRICS
Thermopower of Lead Chalcogenides at High Pressures
V. V. Shchennikov, S. V. Ovsyannikov, and A. Yu. Derevskov
pp. 1845-1849 Full Text: PDF (65 kB)
Electrophysical Properties and Electronic Structure of Tin-Doped Antimony Telluride
I. V. Gasenkova, M. K. Zhitinskaya, S. A. Nemov, and L. D. Ivanova
pp. 1850-1853 Full Text: PDF (69 kB)
Secondary Anti-Stokes Emission from the Bulk of Gallium Phosphide at 4.2 K
V. S. Gorelik, A. L. Karuzskii, and P. P. Sverbil'
pp. 1854-1858 Full Text: PDF (92 kB)
On the Role Played by Bending Vibrations in Heat Transfer in Layered Crystals
N. A. Abdullaev, R. A. Suleimanov, M. A. Aldzhanov, and L. N. Alieva
pp. 1859-1863 Full Text: PDF (65 kB)
Nonempirical Quantum-Chemical Calculation of the Electric Field Gradient at the 51V Nucleus Sites in Alkali Metavanadates
L. S. Vorotilova, L. V. Dmitrieva, S. A. Lavrov, and B. F. Shchegolev
pp. 1864-1868 Full Text: PDF (76 kB)
Second Harmonic Generation and Rectification of Space-Charge Waves in Photorefractive Crystals
V. V. Bryksin and M. P. Petrov
pp. 1869-1879 Full Text: PDF (123 kB)
DEFECTS, DISLOCATIONS, AND PHYSICS OF STRENGTH
Method for Estimating Local Lattice Distortions near a Magnetic Ion Based on the Parameters of the Ligand Hyperfine Interaction: Ce3+ in the Fluorite Homologous Series
Ts. A. Gavasheli, D. M. Daraseliya, D. L. Dzhaparidze, R. I. Mirianashvili, O. V. Romelashvili, and T. I. Sanadze
pp. 1880-1884 Full Text: PDF (56 kB)
Motion of Dislocations through Ensembles of Forest Dislocations and Point Obstacles upon the Simultaneous Action of Static and Cyclic Loads
B. M. Loginov, A. N. Proskurnin, and E. V. Vershinin
pp. 1885-1888 Full Text: PDF (50 kB)
MAGNETISM AND FERROELECTRICITY
Electron Transport in Granular Amorphous Silicon Dioxide Films with Ferromagnetic Nanoparticles Placed in a Magnetic Field
L. V. Lutsev, Yu. E. Kalinin, A. V. Sitnikov, and O. V. Stognei
pp. 1889-1897 Full Text: PDF (283 kB)
Bismuth-Induced Enhancement of Magneto-Optical Effects in Iron Garnets: A Theoretical Analysis
A. S. Moskvin and A. V. Zenkov
pp. 1898-1906 Full Text: PDF (108 kB)
The Nature of Anomalies in the Magnetoresistance of Antiferromagnetic YBa2Cu3O6 + x
A. S. Moskvin and Yu. D. Panov
pp. 1907-1915 Full Text: PDF (115 kB)
Charge Segregation and a Nonuniform Magnetic State in Donor- and Acceptor-Doped LaMnO3
N. N. Loshkareva, A. V. Korolev, T. I. Arbuzova, N. I. Solin, N. A. Viglin, I. B. Smolyak, N. G. Bebenin, Yu. P. Sukhorukov, S. V. Naumov, N. V. Kostromitina, and A. M. Balbashov
pp. 1916-1924 Full Text: PDF (125 kB)
Magnetic Properties of FexMn1 – xS Sulfides Exhibiting the Magnetoresistive Effect
G. A. Petrakovskii, L. I. Ryabinkina, G. M. Abramova, A. D. Balaev, O. B. Romanova, G. I. Makovetskii, K. I. Yanushkevich, and A. I. Galyas
pp. 1925-1928 Full Text: PDF (67 kB)
Piezoelectric Properties of Crystals of Some Protein Aminoacids and Their Related Compounds
V. V. Lemanov, S. N. Popov, and G. A. Pankova
pp. 1929-1935 Full Text: PDF (112 kB)
LATTICE DYNAMICS AND PHASE TRANSITIONS
Manifestation of Quantum Statistics in Vibrational Dynamics of Poly(ethylene) Crystals
A. I. Slutsker, V. I. Vettegren, V. L. Gilyarov, G. Dadobaev, V. B. Kulik, and L. S. Titenkov
pp. 1936-1943 Full Text: PDF (99 kB)
Nuclear Quadrupole Resonance Spectrum and Transition from the Incommensurate Phase to the Commensurate Phase of a Crystal
M. A. Popov
pp. 1944-1948 Full Text: PDF (59 kB)
Effect of Hydrostatic and Chemical Pressure on BaF2 and BaF2 : Eu2+ Crystals
A. E. Nikiforov, A. Yu. Zakharov, V. A. Chernyshev, M. Yu. Ugryumov, and S. V. Kotomanov
pp. 1949-1953 Full Text: PDF (62 kB)
A Study of the Phase Diagrams of (NH4)3Ga1 – xScxF6 Ammonium Cryolites
M. V. Gorev, I. N. Flerov, A. Tressaud, D. Denu, A. I. Zaitsev, and V. D. Fokina
pp. 1954-1960 Full Text: PDF (98 kB)
The Influence of Deuteration on the Phase Transitions in (NH4)3Me3+F6 Cryolites (Me3+ = Sc and Ga)
I. N. Flerov, M. V. Gorev, M. L. Afanas'ev, and T. V. Ushakova
pp. 1961-1966 Full Text: PDF (82 kB)
Optical and X-ray Diffraction Investigations of the Symmetry of Distorted Phases of the (NH4)2KGaF6 Crystal
S. V. Mel'nikova, S. V. Misyul', A. F. Bovina, and M. L. Afanas'ev
pp. 1967-1971 Full Text: PDF (80 kB)
Crystal Structure of Diserinesulfate Monohydrate
Yu. I. Smolin, A. E. Lapshin, and I. A. Drozdova
pp. 1972-1975 Full Text: PDF (70 kB)
LOW-DIMENSIONAL SYSTEMS AND SURFACE PHYSICS
Optical Vibration Modes in (Cd, Pb, Zn)S Quantum Dots in the Langmuir–Blodgett Matrix
A. G. Milekhin, L. L. Sveshnikova, S. M. Repinskii, A. K. Gutakovskii, M. Friedrich, and D. R. T. Zahn
pp. 1976-1980 Full Text: PDF (204 kB)
The Normal Mode Spectrum in a Two-Dimensional Lattice of Neutral Atoms
A. V. Okomel'kov
pp. 1981-1987 Full Text: PDF (103 kB)
Dispersionless Polaritons at Symmetrically Oriented Surfaces of Biaxial Crystals
V. I. Alshits and V. N. Lyubimov
pp. 1988-1992 Full Text: PDF (71 kB)
POLYMERS AND LIQUID CRYSTALS
Dipole Moment and Mobility of Molecules in Nematic Liquid Crystals of the 4-n-Butyl Ester of [4[prime]-n-Hexyloxyphenyl] Benzoic Acid in the Absence of External Orienting Fields
T. P. Stepanova, A. É. Bursian, and V. M. Denisov
pp. 1993-2000 Full Text: PDF (106 kB)
FULLERENES AND ATOMIC CLUSTERS
Small-Angle X-ray Scattering in a Carbon–Sulfur Nanocomposite Produced from Bulk Nanoporous Carbon
É. A. Smorgonskaya, R. N. Kyutt, V. B. Shuman, A. M. Danishevskii, S. K. Gordeev, and A. V. Grechinskaya
pp. 2001-2008 Full Text: PDF (107 kB)
Effect of Magnetic Field on the Microplastic Strain Rate for C60 Single Crystals
B. I. Smirnov, V. V. Shpeizman, N. N. Peschanskaya, and R. K. Nikolaev
pp. 2009-2012 Full Text: PDF (51 kB)Archived web conten
Controlled Lagrangian and Hamiltonian Systems
No full textany control systems are mechanical systems. The unique feature of mechanical systems is the notion of energy, which gives much information on the stability of equilibria. Two kinds of forces are associated with the energy: dissipative force and gyroscopic force. A dissipative force is, by definition, a force which decreases the energy, and a gyroscopic force is, by definition, a force that does not change the energy. Gyroscopic forces add couplings to the dynamics. In this thesis, we develop a control design methodology which makes full use of these three physical notions: energy, dissipation, and coupling.
First, we develop the method of controlled Lagrangian systems. It is a systematic procedure for designing stabilizing controllers for mechanical systems by making use of energy, dissipative forces, and gyroscopic forces. The basic idea is as follows: Suppose that we are given a mechanical system and want to design a controller to asymptotically stabilize an equilibrium of interest. We look for a feedback control law such that the closed-loop dynamics can be also described by a new Lagrangian with a dissipative force and a gyroscopic force where the energy of the new Lagrangian has a minimum at the equilibrium. Then we check for asymptotic stability by applying the Lyapunov stability theory with the new energy as a Lyapunov function.
Next, we show that the method of controlled Lagrangian systems and its Hamiltonian counterpart, the method of controlled Hamiltonian systems, are equivalent for simple mechanical systems where the underlying Lagrangian is of the form kinetic minus potential energy. In addition, we extend both the Lagrangian and Hamiltonian sides of this theory to include systems with symmetry and discuss the relevant reduction theory.</p
Conception and Implementation of a Usability Problem Analysis Tool and its Comparison with another Usability Technique on the Example of a Workflow-driven Integration Environment
No full textThe demand for good usability has become indisputable as usable products are more profitable, secure and enhance the reputation of its producing company.
For many applications abstract usability problems like "Users have problems using the online shop" are known, but bringing in concrete design improvements is hard. Thus, it would
be desirable to transfer it to concrete problems like "The meaning of text field ’ID’ in form ’Payment’ is unclear". Deriving concrete redesign ideas from such a concrete problem is not that hard anymore.
The thesis provides a concept and a prototypical implementation of a tool to analyze an existing abstract usability problem to enable an analyst to submit substantiated improvement suggestions. The tool is automatically and remotely applicable. This reduces travel expenses and accelerates data collection. To evaluate the results the proven Think Aloud method is taken as reference usability technique. The Track-Analysis-Tool is applied on the example
of the workflow-driven integration environment RCE. A user task representing the Abstract usability problem "Users have problems getting started with RCE" is defined. A study with
13 participants divided into two iterations is conducted.
The investigation of the results shows that the Track-Analysis-Tool reveals the same crucial usability problems as the Think Aloud method does and is particularly useful when it comes to quantifications like task completion times. The Track-Analysis-Tool lacks to gather subtle usability problems which can be detected with other techniques like the Think Aloud
method
