-
1
High gain reconfigurable symmetrical sector patch antenna loaded with parasitic elements
Published 2025-04-01“…These PIN diodes are used to control the radiation pattern by switching their on/off states, allowing the antenna to achieve four distinct directional patterns. …”
Get full text
Article -
2
-
3
A Compact Shared-Aperture Antenna With 2-Transmit and 2-Receive Highly-Isolated Ports for Full-Duplex MIMO Systems
Published 2025-01-01“…All radiation patterns are in the broadside direction and it operates in the 2.5 GHz frequency band. …”
Get full text
Article -
4
Possibilities of Using of Surface and Subsurface Waves’ Amplitude-Angle Characteristics for Control of Materials with Surface-Hardened Inhomogeneous Layer
Published 2022-12-01“…For the first time, the ratio of normalized amplitudes of surface waves taken at certain angles on theamplitude-angle characteristic curve obtained in the echo mode was proposed to be used as correlating parameters with the depth of the hardened layer. As a result of this research, the possibility of using a phased array transducers to solve the above problems.The effect of the hardened layer depth varying from zero to five in the working frequency range of 1.8– 10 MHz on the peculiarities of the refraction effect (including interference) and dependence of the subsurface wave amplitude on the acoustic base has been studied, making it possible to establish conditions that provide for the determination of the hardened layer depth.Circuit solutions have been offered in order to increase the efficiency of control of properties of the surface layers of metal articles on the basis of utilization of small-aperture transducers and ultrasonic reflectors making it possible to form fields of surface waves of different directional pattern.…”
Get full text
Article -
5
The Effect of Sapphire Substrates on Omni-Directional Reflector Design for Flip-Chip Near-Ultraviolet Light-Emitting Diodes
Published 2019-01-01“…In this paper, we investigate the effect of omni-directional reflectors (ODRs) on the light extraction efficiency (LEE) for flip-chip near-ultraviolet light-emitting diodes (LEDs) on patterned (PSS) and flat sapphire substrate (FSS) using three-dimensional finite-difference time-domain method. …”
Get full text
Article -
6
Community structure and diversity of soil nematodes in different slope directions of wild cherry plum forests in Xinjiang, China
Published 2025-08-01“…[Objective] This study elucidates the spatial differentiation pattern of nematode communities in soils in slopes facing different directions and provides reference for the conservation and scientific management of wild cherry plum forest population. …”
Get full text
Article -
7
DEPENDENCE OF THE SPECKLE-PATTERNS SIZE AND THEIR CONTRAST ON THE BIOPHYSICAL AND STRUCTURAL PARAMETERS OF BIOLOGICAL TISSUES
Published 2017-06-01“…Calculation of the contrast of the speckle structure of scattered light in visible spectral range at different depths in the biotissue made it possible to establish the dependence of the contrast value of the interference pattern on the degree of oxygenation of the blood and the volume concentration of capillaries in the dermis.…”
Get full text
Article -
8
High-resolution cyclic framework for the Songliao Basin in northeastern China, and its implications for sedimentation and organic matter enrichment
Published 2024-11-01“…The organic matter enrichment pattern aligns with its filling dynamics, indicating an “overfilling” type developmental pattern at lower strata levels where organic material predominantly originates from terrestrial plant debris external to the basin; this material accumulates primarily within silty zones along layers—with areas exhibiting heightened enrichment values slightly lagging behind short-eccentric maxima positions. …”
Get full text
Article -
9
Evaluation of Morphometric Factors on the Distribution of Debris: A Case Study on the Attica Ripples on the South of Paveh- Kermanshah Province, Iran
Published 2018-02-01“…The first pattern, in the direction of the southeast, east, and northeast, was more than other directions in the degradation dispersion. …”
Get full text
Article -
10
Development of Continuous AMSR-E/2 Soil Moisture Time Series by Hybrid Deep Learning Model (ConvLSTM2D and Conv2D) and Transfer Learning for Reanalyses
Published 2025-01-01“…We developed a sophisticated deep learning ConvLSTM model, that combines convolutional long short-term memory (ConvLSTM2D) layers and convolutional neural network (CNN) layers. …”
Get full text
Article -
11
Human Action Recognition Method Based on Multi-channel Fusion
Published 2025-01-01“…Among these, WiFi-based human action recognition has emerged as a prominent research direction, demonstrating essential application potential in smart homes, health care, military training, and other fields. …”
Get full text
Article -
12
Vertical distribution and factors influencing tropical forest soil magnetic susceptibility in Xishuangbanna, Southwest China
Published 2025-07-01“…Feo was the most important factor that directly affects χlf (β = 0.952). The ferrihydrite in Feo forms fine-grained magnetite and maghemite via the aging process, which is the main mechanism for increasing χlf in the 0–80-cm layer in this area. …”
Get full text
Article