1,978 research outputs found
The Semiotics of nonverbal manifestation of emotions and its reflection in the Russian language and body language: convulsions of body and body parts
[Abstract] One of the problems linguists and semioticians are working on nowadays is the description of how emotions are conceptualized in the two sign codes: in the natural language and in the corresponding body language. But scholars have analyzed usually only limited sets of emotional corporeal signs, whereas other numerous signs and models of behavior are still beyond the scope of research. The goal of my paper is to describe one class of Russian emotional signs, which, as far as I know, has never been described. Bodily manifestations of emotions in the Russian culture and semiotic codes can be divided into two classes. The first class is gestures, which are understood here broadly. It includes manual gestures, gestures of the head, shoulders and legs; mimics, meaningful glances, postures and verbal-nonverbal forms – manners. The second class is formed by physiological reactions that are not signs themselves. The specific feature of the Russian semiotic systems is that emotional gestures and physiological reactions have a great many verbal names that are used in various collocations and idioms denoting bodily manifestations of emotions. The special subclass of Russian idioms – that of gestural phrasemes connected with gestures semantically or/ and etymologically – is discussed in more detail. The semiotic representation of Russian emotional signs that denote convulsions of body and body parts constitutes the main part of my work. The convulsions are spontaneous motions of body and body parts, which appear as uncontrolled reactions to physical and emotional impulses. I will point out the semantic and pragmatic features that contrast the words and gestures, and show corporeal sign symbolism that stands behind them
Optical lattices as a tool to study defect-induced superfluidity
We study the superfluid response, the energetic and structural properties of
a one-dimensional ultracold Bose gas in an optical lattice of arbitrary
strength. We use the Bose-Fermi mapping in the limit of infinitely large
repulsive interaction and the diffusion Monte Carlo method in the case of
finite interaction. For slightly incommensurate fillings we find a superfluid
behavior which is discussed in terms of vacancies and interstitials. It is
shown that both the excitation spectrum and static structure factor are
different for the cases of microscopic and macroscopic fractions of defects.
This system provides a extremely well-controlled model for studying
defect-induced superfluidity.Comment: 14 pages, 13 figures, published versio
Spin-polarized tunneling through randomly transparent magnetic junctions: Reentrant magnetoresistance approaching the Julliere limit
Electron conductance in planar magnetic tunnel junctions with long-range
barrier disorder is studied within Glauber-eikonal approximation enabling exact
disorder ensemble averaging by means of the Holtsmark-Markov method. This
allows us to address a hitherto unexplored regime of the tunneling
magnetoresistance effect characterized by the crossover from
momentum-conserving to random tunneling as a function of the defect
concentration. We demonstrate that such a crossover results in a reentrant
magnetoresistance: It goes through a pronounced minimum before reaching
disorder- and geometry-independent Julliere's value at high defect
concentrations.Comment: 7 pages, 5 figures, derivation of Eq. (39) added, errors in Ref. 7
correcte
Generation of platicons and frequency combs in optical microresonators with normal GVD by modulated pump
We demonstrate that flat-topped dissipative solitonic pulses, platicons, and
corresponding frequency combs can be excited in optical microresonators with
normal group velocity dispersion using either amplitude modulation of the pump
or bichromatic pump. Soft excitation may occur in particular frequency range if
modulation depth is large enough and modulation frequency is close to the free
spectral range of the microresonator.Comment: 10 pages, 4 figures, to appear in EP
Developing system of automatic control resonant mode of a vibrating machine
The paper is devoted to the experimental check of a control algorithm for automatic adjustment of oscillations of a mechanical system to the resonance mode. Oscillations of the system are excited by rotating an unbalanced rotor of an asynchronous electric motor. Working principle of the control system is based on measuring a phase shift between oscillations of the system and an excitation force
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