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4241
Algorithm and mathematical model for geometric positioning of segments on aspherical composite mirror
Published 2018-09-01“…This approach allows: to expand the spectral operating range from 0.2 to 11.0 μm and to increase the diameter of the entrance pupil of the receiving optical system, while maintaining the optimal value of the exponent mS– mass per unit area.Two variants of adjusting the position of mirror segments are considered when forming an aspherical surface of the second order, with respect to the base surface of the nearest sphere, including geometrical and opto-technical positioning.The purpose of the research was to develop an algorithm for solving the problem of geometric positioning of hexagonal segments of a mirror telescope, constructing an optimal circuit for traversing elements when aligning to the nearest radius to an aspherical surface, and also to program the output calculation parameters to verify the adequacy of the results obtained.Various methods for forming arrays from regular hexagonal segments with equal air gaps between them are considered. …”
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4242
FRPNet: A Lightweight Multi-Altitude Field Rice Panicle Detection and Counting Network Based on Unmanned Aerial Vehicle Images
Published 2025-06-01“…Traditional manual counting methods are labor-intensive and inefficient, making them unsuitable for large-scale farmlands. …”
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4243
The effects of nine types of exercise rehabilitation therapies on improving limb balance, cognitive and emotional function, and quality of life in elderly patients with Parkinson’s...
Published 2025-08-01“…In terms of enhancing cognitive function, mind-body exercise (MBE) emerged as the optimal choice (SMD = −1.42, 95% CI [−2.01, −0.84], p < 0.0001), while resistance training (RT) was most effective in improving quality of life (SMD = 1.83, 95% CI [0.41, 4.07], p < 0.0001).ConclusionDance (DA) is the most effective intervention for improving balance, while aquatic training (ABT) and resistance training (RT) are most effective for emotional regulation. …”
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4244
Arthroscopic Management of Posterior Elbow Impingement
Published 2025-08-01“…Background: Posterior elbow impingement is often seen in athletes who engage in overhead sports that involve repetitive elbow extension; for these patients with persistent symptoms, arthroscopic debridement is often recommended. While traditionally performed in the supine or prone position, arthroscopic elbow debridement performed in the lateral decubitus position has distinct advantages that make it our preferred method. …”
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4245
Royal jelly alleviates gemcitabine-induced ovarian toxicity: an investigation on rat models
Published 2025-07-01“…This original study highlights the potential of RJ as a natural adjunct to preserve ovarian reserve during gemcitabine chemotherapy, while emphasizing the need for further research to determine its long-term effects and optimal dosage.…”
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4246
Application of the Bionic Concept in Reducing the Complexity Noise and Drag of the Mega High-Speed Train Based on Computer Simulation Technologies
Published 2018-01-01“…Regarding the continuous development of high-speed trains and the increase of running speeds, the aerodynamic design of high-speed trains has become significantly important, while reduction of drag and noise comprises a significant challenge in order to optimize aerodynamic design of high-speed trains. …”
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4247
Bridging intentions and outcomes: a program theory approach to residency accreditation standards
Published 2025-07-01“…Abstract Background Accreditation systems can significantly influence medical graduates' competency and healthcare delivery through their impact on multiple stages of physician training. While substantial progress has been made in medical school accreditation systems globally, residency (Postgraduate Medical Education) accreditation faces additional challenges. …”
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4248
Construction and Validation of a Scale to Measure Antifeminist Attitudes
Published 2025-04-01“…These anti-feminist movements, with intense participation among young men, affirm that feminism seeks to violate male rights while reinforcing sexist and misogynistic ideals. …”
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4249
Valorización del Bagazo de Caña de Azúcar en Nanosílice: Ruta Optimizada para Mejorar la Resistencia y la Sostenibilidad en Morteros de Cemento
Published 2025-07-01“… The present research aims to evaluate the influence of adding silica nanoparticles derived from sugarcane bagasse, synthesized in the laboratory using the sol-gel method, on the properties of cement mortar in both its fresh and hardened states. …”
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4250
Activation energy’s effect on nanofluid motion with double diffusion of Cattaneo–Christov in the Riga plate’s boundary layer
Published 2025-08-01“…Temperature increases with thermophoresis and heat flux, while concentration grows with mass flux and activation energy. …”
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4251
Automated detection of diabetic retinopathy lesions in ultra-widefield fundus images using an attention-augmented YOLOv8 framework
Published 2025-07-01“…ObjectiveTo enhance the automatic detection precision of diabetic retinopathy (DR) lesions, this study introduces an improved YOLOv8 model specifically designed for the precise identification of DR lesions.MethodThis study integrated two attention mechanisms, convolutional exponential moving average (convEMA) and convolutional simple attention module (convSimAM), into the backbone of the YOLOv8 model. …”
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4252
Perception-Based H.264/AVC Video Coding for Resource-Constrained and Low-Bit-Rate Applications
Published 2025-07-01“…By targeting regions most relevant to the human visual system, the proposed method enhances perceptual quality while optimizing resource usage, making it particularly suitable for embedded systems and bandwidth-limited communication channels. …”
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4253
Passive Positioning and Adjustment Strategy for UAV Swarm Considering Formation Electromagnetic Compatibility
Published 2025-06-01“…A self-adjustment model characterized by internally active communication and externally silent operation for UAV formations is proposed, which optimizes the positions of the UAVs under test based on their current locations and standard reference positions while adhering to formation geometry constraints. …”
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4254
Research on GNNs with stable learning
Published 2025-08-01“…Abstract Traditional Graph Neural Network (GNN) learning patterns can only achieve optimal performance under the assumption of independent and identically distributed data. …”
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4255
Improving Cerebrovascular Imaging with Deep Learning: Semantic Segmentation for Time-of-Flight Magnetic Resonance Angiography Maximum Intensity Projection Image Enhancement
Published 2025-03-01“…This study proposes a deep learning-based semantic segmentation approach to automate the removal of these structures, enhancing MIP image clarity while reducing manual workload. Using DeepLab v3+, a convolutional neural network model optimized for segmentation accuracy, the method achieved an average Dice Similarity Coefficient (DSC) of 0.9615 and an Intersection over Union (IoU) of 0.9261 across five-fold cross-validation. …”
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4256
Low resolution remote sensing object detection with fine grained enhancement and swin transformer
Published 2025-07-01“…Finally, we incorporate the Shape-IoU loss function to optimize bounding box regression, significantly improving small target detection accuracy while maintaining computational efficiency. …”
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4257
High-Efficiency Drug Loading in Lipid Vesicles by MEMS-Driven Gigahertz Acoustic Streaming
Published 2025-05-01“…Utilizing DSPE-PEG-modified bilayers with hydrodynamic shear forces, our method achieves transient membrane permeability that preserves membrane integrity while permitting controlled doxorubicin (DOX) influx. …”
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4258
An Evaluation of the Power System Stability for a Hybrid Power Plant Using Wind Speed and Cloud Distribution Forecasts
Published 2025-03-01“…Therefore, the proposed system supplies electricity optimally and stably while contributing to reductions in CO<sub>2</sub> emissions.…”
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4259
Extraction of gold from agricultural drones' waste components through Thiourea leaching
Published 2025-07-01“…Agricultural drones are made of various materials including electronic waste components such as circuit boards, connectors, and pins, containing significant amounts of gold. While gold cyanidation is the primary method for gold extraction, there is a growing interest in more environmentally friendly alternatives. …”
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4260
EFFECTIVENESS OF JIGSAW TECHNIQUE GROUP GUIDANCE TO INCREASE STUDENTS' CAREER EXPLORATION
Published 2025-02-01“…This study used a quasi-experimental method with a control and experimental group design. …”
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