Анализ современной распределенной термометрии в процессе разработки месторождений Западной Сибири

Объектом исследования является технология распределенной оптоволоконной термометрии. Цель исследования – анализ применения распределенной оптоволоконной термометрии в процессе разработки на месторождениях Западной. В процессе исследования был проведен анализ возможностей современных систем мониторинга разработки месторождения на основе распределенных оптоволоконных. Рассмотрены технологии и используемых данным типом оборудования и возможности анализа данных поступающих при долговременном мониторинге. Учтены современные тренды, способствующие применению данной технологии в разработке месторождений.The object of research is the technology of distributed fiber optic thermometry. The purpose of the study is to analyze the use of distributed fiber optic thermometry in the development process at Western deposits. During the study, an analysis was made of the capabilities of modern field development monitoring systems based on distributed fiber optic systems. The technologies and the equipment used by this type of equipment and the possibilities of analyzing the data received during long-term monitoring are considered. Modern trends that contribute to the application of this technology in field development are taken into account

Hands help hearing: Facilitatory audiotactile interaction at low sound-intensity levels

Auditory and vibrotactile stimuli share similar temporal patterns. A psychophysical experiment was performed to test whether this similarity would lead into an intermodal bias in perception of sound intensity. Nine normal-hearing subjects performed a loudness-matching task of faint tones, adjusting the probe tone to sound equally loud as a reference tone. The task was performed both when the subjects were touching and when they were not touching a tube that vibrated simultaneously with the probe tone. The subjects chose on average 12% lower intensities (p<0.01) for the probe tone when they touched the tube, suggesting facilitatory interaction between auditory and tactile senses in normal-hearing subjects.Peer reviewe

Ubiquitous Crossmodal Stochastic Resonance in Humans: Auditory Noise Facilitates Tactile, Visual and Proprioceptive Sensations

BACKGROUND: Stochastic resonance is a nonlinear phenomenon whereby the addition of noise can improve the detection of weak stimuli. An optimal amount of added noise results in the maximum enhancement, whereas further increases in noise intensity only degrade detection or information content. The phenomenon does not occur in linear systems, where the addition of noise to either the system or the stimulus only degrades the signal quality. Stochastic Resonance (SR) has been extensively studied in different physical systems. It has been extended to human sensory systems where it can be classified as unimodal, central, behavioral and recently crossmodal. However what has not been explored is the extension of this crossmodal SR in humans. For instance, if under the same auditory noise conditions the crossmodal SR persists among different sensory systems. METHODOLOGY/PRINCIPAL FINDINGS: Using physiological and psychophysical techniques we demonstrate that the same auditory noise can enhance the sensitivity of tactile, visual and propioceptive system responses to weak signals. Specifically, we show that the effective auditory noise significantly increased tactile sensations of the finger, decreased luminance and contrast visual thresholds and significantly changed EMG recordings of the leg muscles during posture maintenance. CONCLUSIONS/SIGNIFICANCE: We conclude that crossmodal SR is a ubiquitous phenomenon in humans that can be interpreted within an energy and frequency model of multisensory neurons spontaneous activity. Initially the energy and frequency content of the multisensory neurons' activity (supplied by the weak signals) is not enough to be detected but when the auditory noise enters the brain, it generates a general activation among multisensory neurons of different regions, modifying their original activity. The result is an integrated activation that promotes sensitivity transitions and the signals are then perceived. A physiologically plausible model for crossmodal stochastic resonance is presented