Эффективность применения грассмановской диаграммообразующей схемы в MIMO системах связи

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Эффективность применения грассмановской диаграммообразующей схемы в MIMO системах связи

Труды Научной конференции по радиофизике, ННГУ, 2004 . 2004. С. 169–171.

Тираспольский С.А., Червяков А. В.

Research target: Mathematics Computer Science Physics Electronics and Electrical Engineering

Language: Russian

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Dataset of solubility values for organic compounds in binary mixtures of solvents at various temperatures

Bezzubov S., Malikov D., Krasnov L. et al., Scientific data 2026 Vol. 13 Article 727

Solubility is a crucial property of organic compounds, impacting their potential applications in synthetic chemistry, materials science and drug design. Moreover, in technological processes mixtures of solvents are often utilized, making the solubility assessment more complicated. Predicting solubility values in mixtures of solvents from a molecular structure can help to address this issue, although a ...

Added: May 19, 2026

Aerokinesis: An IoT-Based Vision-Driven Gesture Control System for Quadcopter Navigation Using Deep Learning and ROS2

Pikalov V., Meshcheryakov V., Kondratev S. et al., Technologies 2026 Vol. 14 No. 1 P. 1–27

This paper presents Aerokinesis, an IoT-based software–hardware system for intuitive gesture-driven control of quadcopter unmanned aerial vehicles (UAVs), developed within the Robot Operating System 2 (ROS2) framework. The proposed system addresses the challenge of providing an accessible human–drone interaction interface for operators in scenarios where traditional remote controllers are impractical or unavailable. The architecture comprises ...

Added: May 19, 2026

Aerokinesis: An IoT-Based Vision-Driven Gesture Control System for Quadcopter Navigation Using Deep Learning and ROS2

Кондратьев С., Никитин Г. Э., Дырченкова Ю. А. et al., Technologies 2026 Vol. 14 No. 1 P. 1–27

Added: May 19, 2026

On smooth Fano threefolds with coregularity zero

Жакупов О. Б., European Journal of Mathematics 2025 Vol. 11 Article 84

We provide examples of smooth three-dimensional Fano complete intersections of degree 2, 4, 6, and 8 that have absolute coregularity 0. Considering the main theorem of Avilov, Loginov, and Przyjalkowski (CNTP 18:506–577, 2024) on the remaining 101 families of smooth Fano threefolds, our result implies that each family of smooth Fano threefolds has an element of absolute ...

Added: May 18, 2026

Optical features of nanoplatelets modified with chiral ligands

Smirnov A., Kurtina D. A., Saitov S. R. et al., Optical Materials: X 2026 Vol. 30 Article 100441

Chiral semiconductor nanostructures and nanoparticles are promising materials for applications in biological sensing, enantioselective separation, photonics, and spin-polarized devices. Here we performed a detailed analysis of optical properties of chiral CdSe nanoplatelets with thickness of 2 and 3 monolayers (ML) with Nacetyl-L-cysteine ligands. We studied the absorption spectra peculiarities, analyzed time-resolved photoluminescence and investigated circular ...

Added: May 18, 2026

Temperature-driven charge transport in annealed CdSe/CdS nanoplatelets film

Smirnov A., Mantsevich V. N., Saitov S. R. et al., Journal of Applied Physics 2026 Vol. 139 Article 185702

This work presents a comprehensive investigation into the temperature-dependent thermally stimulated conductivity and photoconductivity of vacuum-annealed thin films based on core–shell CdSe/CdS nanoplatelets passivated with oleic acid ligands. Controlled thermal annealing under vacuum conditions leads to a substantial increase in both dark and photoinduced conductivity, which is primarily attributed to partial desorption of the ligands. ...

Added: May 18, 2026

Направленность вывода излучения из кольцевых микролазеров с нарушенной вращательной симметрией

Масютин Д. А., Moiseev E., Komarov S. et al., Письма в Журнал технической физики 2026 Т. 52 № 7 С. 27–30

Исследованы инжекционные полупроводниковые микролазеры с кольцевым резонатором радиусом 15 мкм с несимметричным расположением внутреннего отверстия резонатора. Показано, что асимметрия обеспечивает формирование в диаграмме направленности двух лепестков излучения, разориентированных на 50° относительно оси смещения внутреннего отверстия. Измеренная добротность резонаторов сопоставима с добротностью дисковых резонаторов и находится на уровне ∼ 10^6. ...

Added: May 18, 2026

Parallel Computational Technologies. PCT 2025

Springer, 2025.

This book constitutes the refereed proceedings of the 19th International Conference on Parallel Computational Technologies, PCT 2025, held in Moscow, Russia, during April 8–10, 2025. The 31 full papers included in this volume were carefully reviewed and selected from 122 submissions. These papers were organized under the following topical sections: High Performance Architectures, Tools and Technologies; ...

Added: May 18, 2026

KMHCR: A Key-Controlled Signal-Domain Transformation for 5G IoT Security

Ronglin Z., Wei L., Jiahong C. et al., Journal of Signal Processing Systems 2026 Vol. 98 P. 1–15

To address the need for lightweight and low-latency protection in massive resource-constrained 5G Internet of Things (IoT) systems, this paper proposes Key-Controlled Modulation Hopping and Constellation Rotation (KMHCR). KMHCR is designed as a physical-layer confidentiality-enhancement mechanism that avoids bit-wise full-payload encryption in the protection pipeline. It uses a shared key derived from channel-reciprocity secret key ...

Added: May 16, 2026

DPN Verifier: A Toolkit for Faster Soundness Verification and Repair of Process Models with Data

Suvorov N. M., Proceedings of the Institute for System Programming of the RAS 2026 Vol. 38 No. 3(2) P. 49–66

Data Petri Nets (DPNs) extend classical Petri nets to model processes where data directly influences control-flow, enabling a comprehensive view of system behavior and possibility to detect failure points that could otherwise be hidden. Soundness is a correctness criterion that captures such failure points as deadlocks and livelocks as well as model boundedness and absence ...

Added: May 16, 2026

Plasmonic Au-Assisted g-C3N4/CeO2 Heterojunction for Enhanced Photocatalytic Breakdown of Organic Pollutants

The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 18 P. 5386–5394

We demonstrate and rationalize the effect of Au nanoparticles (NPs) on the hierarchical g-C3N4/CeO2 heterojunction. g-C3N4/CeO2 decorated with monodispersed plasmonic Au NPs was synthesized. Detailed analyses showed that CeO2 nanocubes and monodispersed Au NPs were evenly distributed over the 2D g-C3N4 surface, forming a robust interface enriched with abundant active sites. The structure enabled efficient separation of photogenerated charge ...

Added: May 16, 2026

The origin of enhanced photocatalytic performance in titanium dioxide via niobium doping: From experimental assessments to DFT insights

Das A., Paul R., Sharma N. et al., Colloids and Surfaces A: Physicochemical and Engineering Aspects 2026 Vol. 728 P. 138830

Niobium-doped TiO2 (Nb-TiO2), demonstrates dual functionality as an efficient photocatalyst for dye degradation and a promising photoelectrocatalyst for water oxidation. Nb incorporation via a facile hydrothermal method was confirmed by XRD (Rietveld refinement), XPS, TEM, FT-IR, Raman, and BET analyses, indicating successful lattice doping and structural modification. Photocatalytic dye degradation experiments were conducted using a model ...

Added: May 16, 2026

2-Elliptic Periodic Orbits near a Nonsimple Homoclinic Tangency in Four-Dimensional Symplectic Maps

Lerman L. M., Turaev D. V., Regular and Chaotic Dynamics 2026 Vol. 31 No. 3 P. 349–369

We show that bifurcations of four-dimensional symplectic diffeomorphisms with a quadratic homoclinic tangency to a saddle periodic orbit with real multipliers produce 2-elliptic periodic orbits if the tangency is not partially hyperbolic. We show that a normal form for the rescaled first-return maps near such tangency is given by a four-dimensional symplectic H´enonlike map and study bifurcations of the ...

Added: May 15, 2026

Bibliometric Analysis by Network Models

Aleskerov F. T., Yakuba V. I., Khutorskaya O. et al., Springer, 2026.

The book contains new models of bibliometric analysis based on centrality measures in network analysis, pattern analysis and stability analysis. A distinctive feature of these centrality measures is that they account for the parameters of vertices and group influence of vertices to a vertex. This reveals specific groups of publications, authors, terms, journals and affiliations ...

Added: May 15, 2026

Neural-network maps for two-parameter modeling of bistability and codimension-two bifurcations in two-dimensional flow dynamical systems

Kuptsov P., Panyushev A., Stankevich N., Chaos 2026 Vol. 36 No. 5 Article 053138

We develop a machine-learning approach to reproduce the behavior of two versions of the van der Pol oscillator exhibiting a subcritical Andronov–Hopf bifurcation, with or without a codimension-2 Bautin point. We construct a neural-network model that functions as a recur rent map and train it on short segments of oscillator trajectories. The results show that, ...

Added: May 15, 2026

Perturbation theory for phase correlations of a light wave propagating in a turbulent medium

Kolokolov I., Lebedev V., Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 2026 Vol. 113 Article 054117

We theoretically investigate the correlation functions of the phase of a light wave propagating through a turbulent medium. We use an equation for the logarithm of a wave packet envelope, which includes a secondorder nonlinear term. Based on this equation, we develop a diagrammatic technique to calculate corrections to the correlation function obtained in the linear approximation. We ...

Added: May 15, 2026

Perovskite nanoparticles Cs4PbBr6 and CsPbBr3: synthesis, analysis and peculiar optical properties

Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.

All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...

Added: May 14, 2026

Bifurcations and Structural Stability of Generic PC-HC Families

Dorovskiy A., / Series arXiv "math". 2026.

In this paper the structural stability of generic families of vector fields of the PC-HC class on the two-dimensional sphere is proved. A classification of these families up to moderate equivalence in neighborhoods of their large bifurcation supports is presented, based on such invariants as the configuration and the characteristic set. The realization lemma is proved. ...

Added: May 14, 2026

CsPbBr3 and Cs4PbBr6 perovskite nanoparticles: hidden potential of Cs4PbBr6 or ineffective fluorescence?

Гущина В. А., Mendeleev Communications 2025 Vol. 35 No. 2 P. 193–195

All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are intensively studied for their unique optical properties, though synthesizing single-phase nanoparticles has posed challenges. Detailed synthesis method of CsPbBr3 and Cs4PbBr6 single-phase nanoparticles and their chemical and phase analysis are described. Distinctive optical characteristics, such as photoluminescence, optical band gap and the Urbach tail region, are revealed and explained within the current ...

Added: May 14, 2026

SERS effect on the surface of ZnO nanorods coated with CsPbBr3

Гущина В. А., Physics of Complex Systems, Russia 2026 Vol. 7 No. 1 P. 3–15

Heterostructures based on ZnO nanorods and CsPbBr3 nanocrystals were investigated for their potential as semiconductor SERS substrates. We found that ZnO morphology governs the efficiency of interfacial energy transfer, leading to enhanced photoluminescence under 390 nm excitation and a noticeable reduction of the bandgap in the composites. Raman analysis revealed a pronounced intensity enhancement and ...

Added: May 14, 2026

Применение адаптивных антенных решеток для увеличения скорости передачи информации

С.А.Тираспольский, Ермолаев В. Т., Флаксман А. Г. et al., Труды Научной конференции по радиофизике, ННГУ, 2002 2002 С. 22–28

В данной работе рассматривается принцип передачи информации и теоретически исследуется пропускная способность MIMO системы в условиях случайного канала распространения радиоволн, обсуждаются различные алгоритмы распределения мощности передатчика по параллельным ортогональным пространственным подканалам. ...

Added: February 10, 2026

Анализ электродинамических характеристик резонансно-щелевой патч-антенны и решетки MIMO на ее основе

Никитина А. А., Никитин В. Г., Каравашкина В. Н. et al., Труды Северо-Кавказского филиала Московского технического университета связи и информатики 2025 № 1 С. 71–77

В статье выполнен анализ модели одиночной планарной резонансно-щелевой патч-антенны диапазона LowBand (33-48,4 МГц), получены результаты компьютерного моделирования ее электродинамических характеристик – диаграмм направленности (ДН), комплексного коэффициента отражения ( S11 ) и коэффициента стоячей волны (КСВН) от частоты. Исследовано влияние изменения размеров такой антенны и использования диэлектрических материалов подложки (FR-4 и тефлон) на ее радиочастотные свойства, ...

Added: January 13, 2026

Моделирование микрополосковой антенной решетки с использованием пакета CST MWS

Уткин М. В., Grachev N. N., Utkin B. et al., В кн.: Инновационные, информационные и коммуникационные технологии. Сборник трудов XХ Международной научно-практической конференции.: Ассоциация выпускников и сотрудников ВВИА им. проф. Жуковского, 2024. С. 237–242.

The paper focuses on the numerical simulation of an antenna array using the CST MWS package. Special attention is given to the selection of the array elements' constructive parameters, such as dielectric permittivity, emitter radius, and spacing between elements, as well as the computation of the radiation pattern. The analysis emphasizes the width of the ...

Added: February 17, 2025

Проектирование и расчет диаграммы направленности микрополосковой антенной решетки

The paper focuses on the design and calculation of antenna array parameters, considering operating conditions and technical requirements. Special attention is given to the selection of constructive parameters of the «Инновационные, информационные и коммуникационные технологии» Сборник трудов XXI Международной научно-практической конференции, 2024 234 array elements, such as dielectric permittivity, emitter radius, and spacing between elements, ...

Added: February 17, 2025