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Программная обработка терагерцовых тепловых изображений лица для выявления стабильных зон активации потовых желез под воздействием стресса
Цифровая обработка сигналов. 2026. № 3. С. 24–29.
This paper presents a software tool developed for processing terahertz thermal images of the human face acquired during a controlled psychophysiological experiment. In the experiment, a 500 GHz single-pixel detector combined with a two-mirror scanning system forms a sequence of low-resolution thermal frames (700×51 pixels) of the subject’s face while the person undergoes relaxation and stress-inducing cognitive and physical loads. The goal of the processing is automatic detection and interframe grouping of anomalous zones characterized by vertical low-frequency ripple, which are most frequently observed in the central forehead region above the eyebrows. The working hypothesis is that helical sweat ducts may alter the sub-terahertz response of skin under sympathetic activation; it motivates the choice of frequency band and the search for stable spatial zones. The program implements a practical heuristic multi-stage algorithm comprising dynamic-range normalization via histogram matching to a reference frame, construction of an inner face mask, bandpass filtering in the Fourier domain to enhance the characteristic ripple, morphological peak enhancement, connected-component detection of bright spots, and robust grouping of spots across frames into stable logical zones based on center proximity and area consistency. As a result, for each subject a compact set of non-overlapping logical zones is obtained and visualized as chronological collages containing both the original normalized thermal fragments and the corresponding ripple-enhanced patches. The results demonstrate robust extraction of stable spatial zones with the characteristic ripple (the central forehead zone is present in up to 100 % of frames) and provide a convenient visual tool for subsequent quantitative analysis.
Language:
Russian
Abumusabh M., Adachi I., Adamczyk K. et al., Physical Review Letters 2026 Vol. 137 No. 19 Article 191901
We study the processes e+e− → Υ_J(1D)η and e+e− → Υ_J(1D)π+π− at center-of-mass energies √s=(10.73 – 11.02) GeV using a 142.5 fb−1 data sample, including 122 fb−1 near the Υ(10860) peak (√s = 10.866 GeV), collected with the Belle detector at the KEKB asymmetric-energy e+e− collider. From the peak sample, the products of Born cross ...
Added: November 9, 2026
Abumusabh M., Aggarwal L., Ahmed H. et al., Physical Review D - Particles, Fields, Gravitation and Cosmology 2026 Vol. 114 No. 5 Article 052016
We report the first observation of the decays B+ → Sigma_c(2455)++ Xi-_c'-bar and B0 → Sigma_c(2455)0 Xi0_c'-bar, with significances of 6.4σ and 5.3σ, respectively, including systematic uncertainties. This analysis is based on data samples containing 771.6×10^6 Υ(4S) decays collected with the Belle detector at the KEKB collider and 520.6×10^6 Υ(4S) decays collected with the Belle ...
Added: November 9, 2026
Abumusabh M., Adachi I., Aggarwal L. et al., Physical Review Letters 2026 Vol. 136 No. 23 Article 231802
We present a search for an invisible hidden-sector particle X_inv, produced in B0 → D0-bar X_inv and B± → h X_inv decays, where h = π±, K±, D_s±, p±. The search is performed using e+e− collision data recorded with the Belle detector, corresponding to 711 fb−1. No significant signal is observed. We set 90% confidence ...
Added: November 9, 2026
Abumusabh M., Adachi I., Adamczyk K. et al., Physical Review D - Particles, Fields, Gravitation and Cosmology 2026 Vol. 113 No. 3 Article 032004
A sample of 365 fb−1 of e+e− → Υ(4S) → BB-bar data collected by the Belle II experiment is used to measure the partial branching fractions of charmless semileptonic B meson decays and determine the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V_ub. Events containing a signal electron or muon ℓ and a fully reconstructed hadronic ...
Added: November 9, 2026
Uglov T., International Journal of Modern Physics A 2026 P. 2645005–2645013
The paper presents the upgrade of the KL and muon detector for the Belle II experiment at the SuperKEKB collider. To maintain the performance under the elevated background levels associated with high luminosity, the original resistive plate chambers in the endcaps and the innermost barrel layers have been replaced with a scintillator-based system. The new ...
Added: November 9, 2026
Ясавеев М. И., International Journal of Modern Physics A 2026 Article 2645007
The Belle and Belle II experiments have collected large samples of e+e- collision data at center-of-mass energies near the Y(4S) resonance, containing a substantial number of e+e- → cc-bar events. We report measurements of D0-D0-bar mixing parameters using a model-independent analysis of D0 → Ks pi+ pi- decays. We also present results on CP-asymmetries in ...
Added: November 9, 2026
Ясавеев М. И., Pakhlov P., Петерс Н. А. et al., Journal of High Energy Physics 2026 Vol. 7 Article 169
This paper presents a detailed description of a model-independent method for the direct measurement of the Υ(4S) → B+B− and Υ(4S) → B0B0-bar production fractions at B factories. The method is based on counting single- and double-inclusive charmed meson production at the Υ(4S) resonance, providing statistical tagging of B0B0-bar and B+B− events. A feasibility study ...
Added: November 9, 2026
Neuberger A., Veretenenko I. I., Shalygin A. et al., Nature Communications 2026 Vol. 17 No. 1 P. 1–13
Polyamines are organic cations that are present at sub-millimolar concentrations
in the cytoplasm and extracellular fluids and serve as versatile modulators
of TRP channels, fine-tuning their functions in physiological and
pathological contexts, including pain, inflammation and cancer. Despite
extensive functional studies, the structural basis by which polyamines regulate
TRP channels remains unclear. Here, we combine calcium imaging, electrophysiology,
cryo-electron microscopy, mutagenesis ...
Added: November 7, 2026
Дубленский Д. С., КАНУННИКОВ Т. Н., Makhmudov T. N. et al., Известия высших учебных заведений. Электроника 2026 Т. 31 № S4.1 С. 137–148
The key principle of the operation of an unmanned aerial vehicle is the
continuous collection and processing of data from on-board sensors, controlled by a
real-time operating system (RTOS). For multicopters, where the minimum delay in
the system’s response to changes in flight is critically important, the main factor is the
performance of the flight controller’s computing core. Historically, ...
Added: November 7, 2026
Kupavskii S. A., Malikov R. O., Dyakov S. A. et al., Applied Physics Letters 2026 Vol. 129 Article 161105
The match of the fourth power of the normalized third Stokes parameter for a single non-ideal quarter-wave plate (QWP) and the visibility function of the polarization contrast measured using a polarimetric setup with parallel polarizers and two identical QWPs was examined and observed. This match was first established numerically using the Fourier-modal method (FMM) and ...
Added: November 6, 2026
Baeva E., Titova N. A., Kirsanova M. A. et al., Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 No. 19 Article 194513
We employ the flux-flow instability (FFI) technique—a widely used method for determining the quasiparticle relaxation time (𝜏𝐸)—to investigate single-crystal superconducting titanium nitride (TiN) films characterized by weak vortex pinning and slow electron-phonon relaxation. By systematically varying the TiN strip width, we show that reliable extraction of the vortex velocity and 𝜏𝐸 is achievable only when ...
Added: November 6, 2026
Brandyshev P., Koniushenko M., Budkov Y., Journal of Chemical Physics 2026 Vol. 165 No. 16
We develop a finite-temperature field-theoretical description of the Casimir interaction between two perfectly conducting boundaries with the intervening gap filled by a two-component quantum Boltzmann plasma embedded in a homogeneous dielectric background. The quantum motion of the charged particles is represented by imaginary-time worldlines, while the electromagnetic field is treated in the Gaussian approximation. The ...
Added: November 6, 2026
Алексеев О. В., Letters in Mathematical Physics 2026 Vol. 116 No. 5 Article 132
We study the mixed Hessian of the dispersionless Toda \(\tau\)-function for the one-harmonic \(s\)-fold symmetric conformal map \(f(w)=r\bigl(w+\zeta w^{1-s}\bigr)\), where \(r>0\) is the exterior conformal radius and \(\zeta>0\) is the dimensionless shape parameter. This Hessian is the susceptibility matrix generated by the inverse conformal map. Our spectral statements are formulated for its weighted symmetry-block realizations ...
Added: November 5, 2026
IEEE Circuits and Systems Society, 2026.
The international scientific and engineering conference “Systems of Signal Synchronization, Generating and Processing in Telecommunications” has been held since 1974. For 50 years of work the conference has become a widely known forum for specialists of the field.
The papers which are discussed at the conference can be divided into the following chapters:
1) Synchronization Systems and Devices
2) Signal ...
Added: November 4, 2026
Elena R. Loubenets, Sergey Kuznetsov, Quantum Information Processing 2026 Vol. 25 Article 358
The optimal implementation of quantum gates for closed $N$-qubit systems is one of the key challenges for practical realization of many quantum information processing tasks. In the present article, based on the generalized Bloch vectors formalism [J. Phys. A: Math. Theor. 54, 195301 (2021)] for a finite-dimensional quantum system, we develop a new \emph{general} model for the ...
Added: November 3, 2026
Akatov M., Polesskiy S., Tuv A. et al., СПб.: Наукоемкие технологии, 2026.
Учебное пособие содержит описания восьми лабораторных работ по дисциплине «Функциональные узлы и компоненты систем контроля и управления»: исследование транзисторных усилительных каскадов, источников тока и токовых зеркал, каскодного и дифференциального каскадов и комплементарного повторителя, основных схем включения операционного усилителя, измерительных выпрямителей и пиковых детекторов, релаксационных генераторов и одновибраторов, линейных стабилизаторов напряжения, измерительного канала с мостовым датчиком, ...
Added: November 3, 2026
Abrashkin A. A., Physics of Fluids 2026 Vol. 38 No. 8 Article 083624
The propagation regimes of nonlinear gravity-capillary waves in deep water are studied. The fluid motion is described by exact solutions of the two-dimensional equations of an ideal incompressible fluid in Lagrangian variables. The trajectories of fluid particles are circles whose radius decreases exponentially with depth (as in the Gerstner wave). The pressure on the free ...
Added: November 3, 2026
Poddiakov A., Integrative Psychological and Behavioral Science 2026 Vol. 60 No. 4 P. 1–50
Clarity of knowledge and reasoning is necessary in many cases. Yet vagueness in scientific thinking related to surprise, curiosity, and “ability to engage with not-knowing” (de Freitas) is also a crucially important source of scientific creativity. Starting from studies by C. S. Peirce and B. Russell, scientists have developed tools for working with increasingly accurate ...
Added: November 3, 2026
Obraztsova A. A., Voitovich V. I., Derkach N. N. et al., St. Petersburg Polytechnical University Journal: Physics and Mathematics 2025 Vol. 18 No. 3.2 P. 24–28
This study presents an approach for fabricating microlasers with quantum dots on GaAs substrates, featuring a disk resonator, a bridge-type electrical contact, and a supporting mesa structure formed by wet chemical etching. The influence of under-etched ledge in the disk cavity, formed under the metal bridge, as well as the low lateral current spreading due ...
Added: November 2, 2026
Ivanova N., Гостищева А. М., Организационная психология 2026 Т. 16 № 2 С. 213–228
Given the highly dynamic and uncertain nature of modern business, examining the factors that influence employees' professional functioning has become increasingly important. Stress and psychological safety are among these factors. Objective. The aim of this study was to analyze the relationship between the severity of stress symptoms and the level of psychological safety among employees ...
Added: October 4, 2026
Petrozavodsk: IEEE, 2026.
Added: October 1, 2026
Portnova G., Proskurnina E., Liaukovich K. et al., Journal of Molecular Neuroscience 2026 Vol. 76 No. 1 P. 19
Added: September 5, 2026
Васильчук М. С., Шаньков Ф. М., Chumakova M. et al., Psychology. Journal of the Higher School of Economics 2021 Vol. 18 No. 2 P. 247–258
The 2019 Coronavirus disease outbreak leads to negative psychological outcomes not only for healthcare workers and patients, but also for the general public. S. Hobfoll’s Conservation of Resources theory is one of the most applicable models for conceptualizing and evaluating natural and social catastrophes and their impact. A web-based screening has been conducted at the ...
Added: June 30, 2026
IEEE, 2024.
A.S. Popov Russian Science and Technical Society with support from V. A. Trapeznikov Institute of Control Sciences, V.A. Kotelnikov Institute of Radio Engineering and Electronics, Autex Ltd. is leading the ХХVIII International Conference «Digital Signal Processing and its Applications — DSPA-2024» ...
Added: June 27, 2026