Suggested Topics within your search.
Suggested Topics within your search.
-
1601
Restoration of Motion Blurred Images Based on Rich Edge Region Extraction Using a Gray-Level Co-Occurrence Matrix
Published 2018-01-01“…An image quality evaluation function and the operation time are used to evaluate the performance of the proposed method. …”
Get full text
Article -
1602
Spatial Variability and Periodicity of Precipitation in the Middle Reaches of the Yellow River, China
Published 2016-01-01“…The empirical orthogonal function (EOF), ensemble empirical mode decomposition, and Hurst exponent are used to detect spatial, multiscale characteristics of periodicity and trend for precipitation. …”
Get full text
Article -
1603
Computerised Method of Multiparameter Optimisation of Predictive Control Algorithms for Asynchronous Electric Drives
Published 2025-07-01“…A computer model was designed in MATLAB and Simulink R2024a based on the gradient-based model predictive control strategy. A series of simulation experiments were carried out by varying the sampling step, number of iterations, prediction horizon, loss function parameters, and maximum linear search step to identify their impact on the control quality indicators. …”
Get full text
Article -
1604
Analysis of Parameterized Quantum Circuits: On the Connection Between Expressibility and Types of Quantum Gates
Published 2025-01-01“…In the context of variational-quantum-algorithm-based quantum machine learning (QML), a QML model composed of a highly expressible PQC and a sufficient number of qubits is theoretically capable of approximating any arbitrary continuous function. While much research has explored the relationship between expressibility and learning performance, as well as the number of layers in PQCs, the connection between expressibility and PQC structure has received comparatively less attention. …”
Get full text
Article -
1605
Transjugular intrahepatic portocaval shunting as a preparation phase for liver transplantation
Published 2018-08-01“…TIPS was successfully carried out in all the patients. The portovenous gradient was reduced by 2—3 times (to 9—12 mm Hg). …”
Get full text
Article -
1606
Enhancing Uplink Communication in Wireless Powered Communication Networks Through Rate-Splitting Multiple Access and Joint Resource Optimization
Published 2025-03-01“…To solve this non-convex joint optimization problem, we employ the simultaneous perturbation stochastic approximation (SPSA) algorithm, a gradient-free method that efficiently estimates optimal parameters with minimal function evaluations. …”
Get full text
Article -
1607
Multiscale mechanical analysis for biomimetic implant design based on Triply Periodic Minimal Surfaces (TPMS) lattices: Application to partial replacement of femoral bone
Published 2025-03-01“…A statistical analysis is performed and a function factor is proposed to facilitate the comparison. …”
Get full text
Article -
1608
Friction and wear characteristics of acidic phosphate ester boundary layers analyzed by near-edge X-ray absorption fine structure
Published 2025-06-01“…The maximum effective viscosity calculated from a function obtained by fitting the friction diagram was approximately 3,000 Pa·s, which was equivalent to that of common grease. …”
Get full text
Article -
1609
Detecting deformation mechanisms of metals from acoustic emission signals through knowledge-driven unsupervised learning
Published 2025-07-01“…The novel method leverages a family of gradient-driven supervised base learners and integrates them with a knowledge-infused aggregate loss function, effectively transforming the approach into an unsupervised learning framework. …”
Get full text
Article -
1610
Inverse design of 3D nanophotonic devices with structural integrity using auxiliary thermal solvers
Published 2025-04-01“…Alongside the optical response, this heat metric becomes part of our objective function. We demonstrate the utility of our algorithm by designing two 3D nanophotonic devices. …”
Get full text
Article -
1611
Machine Learning for Enhanced COPD Diagnosis: A Comparative Analysis of Classification Algorithms
Published 2024-12-01“…These models were applied to a dataset comprising 1603 patients after being referred for a pulmonary function test. <b>Results</b>: The RFC has achieved superior accuracy, reaching up to 82.06% in training and 70.47% in testing. …”
Get full text
Article -
1612
Modelling the spatial-temporal progression of the 2009 A/H1N1 influenza pandemic in Chile
Published 2015-09-01“…A spatial-temporal transmission model of 2009 A/H1N1 pandemic influenza across Chile,a country that spans a large latitudinal range, is developed to characterize the spatial variation in peak timingof that pandemic as a function of local transmission rates, spatial connectivity assumptions for Chilean regions, andthe putative location of introduction of the novel virus into the country. …”
Get full text
Article -
1613
Coordinated Reentry Guidance with A* and Deep Reinforcement Learning for Hypersonic Morphing Vehicles Under Multiple No-Fly Zones
Published 2025-06-01“…The A* algorithm generates heuristic trajectories circumventing no-fly zones, reducing the evaluation function by 6.2% compared to greedy methods, while DDPG optimizes sweep angles to minimize velocity loss and terminal errors (0.09 km position, 0.01 m/s velocity). …”
Get full text
Article -
1614
Application of Machine Learning Techniques for Predicting Students’ Acoustic Evaluation in a University Library
Published 2024-07-01“…Using the collected personal information, room-related parameters, and sound pressure levels as input, six machine learning models (Support Vector Machine–Radial Basis Function (SVM (RBF)), Support Vector Machine–Sigmoid (SVM (Sigmoid)), Gradient Boosting Machine (GBM), Logistic Regression (LR), Random Forest (RF), and Naïve Bayes (NB)) were trained to predict students’ acoustic acceptance/satisfaction. …”
Get full text
Article -
1615
Multi-Agent Reinforcement Learning in Games: Research and Applications
Published 2025-06-01“…Building upon stochastic game and extensive-form game-theoretic frameworks, we establish a methodological taxonomy across three dimensions: value function optimization, policy gradient learning, and online search planning, thereby clarifying the evolutionary logic and innovation trajectories of algorithmic advancements. …”
Get full text
Article -
1616
Malaria Disease Prediction Based on Convolutional Neural Networks
Published 2024-06-01“…In order to confront the challenge of diminishing gradient and facilitate the attainment of convergence, the activation function known as Rectified Linear Unit (ReLU) is ingeniously employed. …”
Get full text
Article -
1617
Utilising machine learning classification models for meteorological drought monitoring and analysis
Published 2025-12-01“…To address model-specific challenges, ridge regression was applied to mitigate multicollinearity in Logistic Regression, while SVM incorporated the Radial Basis Function (RBF) kernel and isolation forest to manage non-linearity and outliers. …”
Get full text
Article -
1618
Mycorrhizal Fungi Influence on Mature Tree Growth: Stronger in High‐Nitrogen Soils for an EMF‐Associated Tree and in Low‐Nitrogen Soils for Two AMF‐Associated Trees
Published 2025-06-01“…ABSTRACT The plant–mycorrhizal fungi relationship can range from mutualistic to parasitic as a function of the fungal taxa involved, plant ontogeny, as well as the availability of resources. …”
Get full text
Article -
1619
RIS-Assisted CR-MEC Systems Using Deep Reinforcement Learning Approach
Published 2024-01-01“…A Markov decision process problem is formulated and then is firstly solved by a proposed deep policy gradient scheme, in which the system directly learns the policy from gradients of actions. …”
Get full text
Article -
1620
Study on shallow grain induced micro-region surface topography instability of bulk Sn alloys upon internal stress conditions
Published 2025-06-01“…This work summarizes the fundamental understanding of SG behavior under varying internal stress conditions, elevating the function-oriented manufacturing process design on bulk Sn-alloy for ensuring the surface quality.…”
Get full text
Article