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701
Symbol Detection and Channel Estimation for Space Optical Communications Using Neural Network and Autoencoder
Published 2024-01-01“…In this paper, we develop a neural network (NN) channel estimator that is optimized across a wide range of signal-to-noise ratio levels during the training stage. …”
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702
Design and experiment of air-suction drum-type seedling seeder for irregular-shaped vegetable seeds
Published 2025-02-01“…The basic structure and working principle of the seeder were elaborated, the key components were designed, and the distribution of the airflow field in the flow paths of the suction nozzles of three different hole types was simulated and analyzed by Fluent software; the relationship between the main influencing factors of the seeder’s operational performance (suction air pressure, clearing air pressure, and vibration frequency of the seed cassette) and the sowing indexes (replanting rate, cavity rate, and qualification rate) was investigated and the relationship between the factors and the sowing indexes (reseeding rate, cavity rate, and qualification rate) was analyzed by the quadratic orthogonal combination experiment method. …”
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703
Dynamic Placement of Pinching Antennas for Multicast MU-MISO Downlinks
Published 2025-01-01“…Intergroup interference is eliminated via block-diagonalization beamforming, resulting in a tractable antenna-placement problem. To accommodate different hardware capabilities, we consider both continuous and discrete activation of pinching antennas, yielding four distinct optimization formulations. …”
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704
China's CCUS technology challenges and countermeasures under “double carbon” target
Published 2024-02-01“…These countermeasures are as follows: ①Diversified integration of different carbon capture methods to achieve cost reduction at the source based on the characteristics of different emission sources; ②Tackling multi-objective optimization techniques, coordinating and optimizing oil recovery efficiency and CO2 storage rate; ③Continuously developing new catalysts to accelerate the conversion reaction of CO2 and improve conversion efficiency; ④Fully draw on the carbon tax policies of countries such as the United States and Australia, explore fiscal and tax incentive policies suitable for China's CCUS industry, increase economic benefits, and enhance enterprise enthusiasm; ⑤Establish a series of standard specifications covering all aspects of the CCUS entire chain, guide the implementation of engineering construction, and reduce enterprise risks from a standardized perspective. …”
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705
Influence of artificial intelligence on higher education reform and talent cultivation in the digital intelligence era
Published 2025-02-01“…Abstract In order to solve the problems of inefficient allocation of teaching resources and inaccurate recommendation of learning paths in higher education, this paper proposes a smart education optimization model (SEOM) by combining the improved random forest algorithm (RFA) based on adaptive enhancement mechanism and the Graph Neural Network (GNN) algorithm. …”
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706
Modernizing the Design Process for US Organ Allocation Policy: Toward a Continuous Distribution Policy for Kidneys
Published 2025-09-01“…We detail the policy design process, present graphical results from 50 000 policy simulations, and highlight 4 policies optimized to balance between multiple objectives differently. …”
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707
User Well-Being in Kitchen Environment Design from a Positive Psychology Perspective: A Quantitative and Qualitative Literature Analysis
Published 2025-03-01“…Then, based on the PERMA model of positive psychology, this paper discusses the support path of kitchen design to users’ psychological needs from five dimensions: positive emotion, engagement, relationships, meaning, and accomplishment. …”
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708
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709
Evaluating Perceived Resilience of Urban Parks Through Perception–Behavior Feedback Mechanisms: A Hybrid Multi-Criteria Decision-Making Approach
Published 2025-07-01“…Factors such as environmental psychological resilience, functional diversity, and visual permeability show a significant path influence and priority intervention value. The empirical results further reveal significant spatial heterogeneity and group differences in the perceived resilience across ecological, neighborhood, and central park types, highlighting the importance of context-specific and user-adaptive strategies. …”
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710
Object detection model design for tiny road surface damage
Published 2025-04-01“…Second, to achieve efficient feature fusion, multiple attention is introduced to optimize features at different stages. Then, a bi-directional feature fusion path is proposed to realize the information exchange between features of different stages, and an enhanced feature pyramid is constructed. …”
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711
Data Governance Navigation for Advanced Operations in Healthcare Excellence
Published 2024-08-01“…Data governance plays an important role in navigating this path, ensuring compliance with regulations, and paving the way for improved patient outcomes. …”
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712
Quantitatively Distinguishing the Factors Driving Runoff and Sediment Yield Variations in Karst Watersheds
Published 2024-08-01“…Different from runoff, climatic factors have no significant influence on SY. …”
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713
Expected values of topological descriptors for possible kink chains of type 2⊤2
Published 2025-02-01“…In this paper, we investigate square-hexagonal chains, a class of systems where the inner dual of a structure with a square-hexagon shape forms a path graph. The specific configuration of square and hexagonal polygons, and how they are concatenated, leads to different types of square-hexagonal chains. …”
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714
Evolution of plastic deformation during multi-pass ECAP of an AA6060 aluminum alloy – An experimental flow line analysis
Published 2025-01-01“…In this study, we use a method for visio-plastic analysis of the local deformation during ECAP of the aluminum alloy AA6060 via different processing routes in a friction-optimized tool with a tool angle of 90°: Prior to the final pass, the billets are cut lengthwise and prepared with a grid of indents on the inside. …”
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715
Research on mechanical automatic food packaging defect detection model based on improved YOLOv5 algorithm.
Published 2025-01-01“…In addition, this study also optimizes the backbone network structure of YOLOv5. …”
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716
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717
Hierarchical Reinforcement Learning for Viewpoint Planning with Scalable Precision in UAV Inspection
Published 2025-05-01“…Additionally, a reward function is designed to enhance inspection precision, enabling collaborative optimization of waypoint positions, viewpoint poses, and focal lengths. …”
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718
Identifying factors affecting the distribution strategy in the food industry with the attitude of marketing and online sales
Published 2025-03-01“…To solve the problem, a Stackelberg game model with endogenous quality, optimal production and pricing decisions of companies and platforms under different sales models was used. …”
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719
Study on the Dynamic Characteristics of DM-DFBL Self-Delayed Feedback with an Optoelectronic Oscillation Loop
Published 2025-05-01“…However, fiber-based optoelectronic feedback or pure optical feedback systems exhibit long delays, and the coupling mechanisms between these two loops differ significantly from those in short-delay systems. …”
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720
Study on the Water Invasion and Its Effect on the Production from Multilayer Unconsolidated Sandstone Gas Reservoirs
Published 2021-01-01“…In this study, an experimental study on edge water invasion of the multilayer commingled production in unconsolidated sandstone gas reservoirs was conducted to understand the water invasion process along with different permeability layers. The results show that the edge water invasion in the commingling production is mainly affected by two major factors including reservoir permeability and gas production rate, which jointly control the encroaching water advance path and speed. …”
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