Showing 561 - 580 results of 848 for search '"high frequency"', query time: 0.07s Refine Results
  1. 561

    Safety of electromagnetic factors for the workplace equipped with personal computers in residential premises by Yu. G. Ryabov, N. M. Legkiy, G. V. Lomaev

    Published 2022-04-01
    “…Residential buildings are not subject to the requirements of the Energy Supervision services; therefore, any unprofessional modification of electrical networks in residential premises, including the use of unapproved extension cords, may result in sparking, high-frequency harmonics, and, in turn, conditions which impact human health, as well as electric injures, fires, and gas explosions.Conclusions. …”
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    Article
  2. 562

    Risk factors for type 2 diabetes mellitus in adolescentes by Wendy Valdés Gómez, Arianna Almirall Sánchez, Miguel Ángel Gutiérrez Pérez

    Published 2019-06-01
    “…<br /><strong>Conclusion:</strong> There is a high frequency of risk factors for developing of DM2 in adolescents, with a predominance of modifiable factors. …”
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    Article
  3. 563

    Chaotic evolutionary multi-objective optimization for multivariate pair trading in tehran stock exchange: the distance approach by Hossein Nikoo, Jamal Barzgari khanagha, Hamid Reza Mirzaei

    Published 2024-06-01
    “…In this research, a method is presented to create multivariate pair combinations by considering contradictory multiple goals in stock pair trading.Methodology: In this study, the statistical sample is limited to the top 30 companies listed on the Tehran Stock Exchange due to the need for high-frequency transactions. The problem is developed in the form of a Mixed Integer Programming (MIP) model, and due to non-convex constraints and exponential solution space, a multi-objective genetic algorithm is used to obtain multivariate pair combinations. …”
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    Article
  4. 564

    MUFFNet: lightweight dynamic underwater image enhancement network based on multi-scale frequency by Dechuan Kong, Dechuan Kong, Yandi Zhang, Xiaohu Zhao, Yanqiang Wang, Lei Cai

    Published 2025-02-01
    “…A Multi-Scale Enhancement Prior algorithm enhances high-frequency and low-frequency features while the Information Flow Interaction module mitigates information stratification and blockage. …”
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    Article
  5. 565

    Research on Design Indicators for Graded Crushed Stone Mixture Based on Vibration Molding Method by Li-biao Chen, Er-hu Yan, Jian Xu, Tao Ma, Jun-cheng Zeng, Yan Gong

    Published 2020-01-01
    “…The asphalt pavement easily shows the diseases like cracking, rutting, and structural water damage during the early service life in Fujian province for the complex effects of very high temperature, easily rainy climatic condition, and high-frequency heavy loading. However, the corresponding studies and strategies are still rare. …”
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  6. 566

    Oscillating Mindfully: Using Machine Learning to Characterize Systems-Level Electrophysiological Activity During Focused Attention Meditation by Noga Aviad, Oz Moskovich, Ophir Orenstein, Etam Benger, Arnaud Delorme, Amit Bernstein

    Published 2025-03-01
    “…Feature importance techniques identified 10 electroencephalography features associated with increased power and coherence of high-frequency oscillations during focused attention meditation relative to an instructed mind-wandering state. …”
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  7. 567

    Voltage-driven autonomous cooperative control of EHLs for load stabilization by Bing Qi, Rui Liu, Deying Zhang, Zhuoqun Wang, Qi Qi

    Published 2025-04-01
    “…Then, a voltage-driven distributed control model is developed, which utilizes the mapping relation between node voltages and transformer load rate to minimize the high-frequency communication overhead associated with large-scale EHLs dispatch while ensuring the control timeliness. …”
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  8. 568

    An Accurate Electrical and Thermal Co-Simulation Framework for Modeling High-Temperature DC and Pulsed I - V Characteristics of GaN HEMTs by Yicong Dong, Eiji Yagyu, Takashi Matsuda, Koon Hoo Teo, Chungwei Lin, Shaloo Rakheja

    Published 2025-01-01
    “…High-electron mobility transistors (HEMTs) employing AlGaN/GaN heterostructures are suitable for high-power and high-frequency applications. To meet target specifications, GaN HEMTs must be designed and optimized by accurately considering the coupling of electrical and thermal characteristics, from the static to the pulsed regimes of operation. …”
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    Article
  9. 569

    A critical review of compensation converters for capacitive power transfer in wireless electric vehicle charging circuit topologies by Mohammad Amir, Izhar Ahmad Saifi, Mohammad Waseem, Mohd Tariq

    Published 2025-04-01
    “…The transmitter plate is excited by a high frequency source and power is transferred between the plates through an electric field. …”
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    Article
  10. 570

    A Multivariate and Multistage Medium- and Long-Term Streamflow Prediction Based on an Ensemble of Signal Decomposition Techniques with a Deep Learning Network by Muhammad Sibtain, Xianshan Li, Snoober Saleem

    Published 2020-01-01
    “…In the second decomposition stage, the component of high frequency (IMF1) was decomposed by VMD, as the second decomposition. …”
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    Article
  11. 571

    Dynamic Response of Bridge-Landslide Parallel System under Earthquake by Yu Liang, Honggang Wu, Tianwen Lai, Hao Lei, Mingzhe Zhu, Kun Ma, Zhiyang Ji, Jiankai Ren

    Published 2022-01-01
    “…Third, with the increase of excitation power, the dominant frequency of bridge-landslide parallel system gradually transitions from low to high frequency rate, and the interaction of the parallel system weakens the influence of river direction on frequency. …”
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  12. 572

    Study on the relationship between indoor ventilation frequency and anxiety and depression symptoms in older persons: based on the data of 2018 CLHLS by Lu Lin, Pingping He, Xiaohui Qiu, Sihui Qiu, Jiangping Chen, Jin Wang

    Published 2025-01-01
    “…The average score of indoor ventilation frequency was (6.06 ± 1.98) points, including 770 people (7.9%) with low frequency, 3,066 people (31.6%) with medium frequency, and 5,854 people (60.4%) with high frequency. 842 (8.7%) had symptoms of depression and 204 (2.1%) had symptoms of anxiety. …”
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  13. 573

    Frequency of Gastrointestinal Parasites, Anemia, and Nutritional Status among Children from Different Geographical Regions of Bolivia by Ceilan Apaza, Washington Cuna, Froilán Brañez, Roberto Passera, Celeste Rodriguez

    Published 2023-01-01
    “…The study aimed to measure the frequency of occurrence of infections with helminths, protozoa, and risk factors of undernutrition and anemia among schoolchildren from the Bolivian highland (altiplano) and lowland (subtropical) rural regions, with a high frequency of gastrointestinal parasite infections. …”
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  14. 574

    cLegal-QA: a Chinese legal question answering with natural language generation methods by Yizhen Wang, Xueying Shen, Zixian Huang, Lihui Niu, Shiyan Ou

    Published 2024-12-01
    “…To address this, our study developed a comprehensive automatic question answering dataset for Chinese civil law, named cLegal-QA, which comprises 14,000 high-frequency questions from Chinese legal communities. …”
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  15. 575

    Study on the Effect of Mineral Particle Sizes on the Spectral Characteristics of Sound and Vibrations in Rock Drilling by Zhantao Li, Sui Wang, Jicheng Wang, Chunxia Song, Bin Chen

    Published 2020-01-01
    “…The general trend is that the larger the high-frequency composition of sound and vibration, the smaller the aggregate size. …”
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  16. 576

    An Inverted Residual Cross Head Knowledge Distillation Network for Remote Sensing Scene Image Classification by Cuiping Shi, Mengxiang Ding, Liguo Wang

    Published 2025-01-01
    “…Convolutional neural networks are extensively used in RSSC tasks, where convolution focuses more on the high-frequency components of the image. Unlike convolution, transformer can model long-distance feature dependencies and mine contextual information in remote sensing scene images. …”
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  17. 577

    Collaborative management of severe periodontal-endodontic lesion with intense lip sucking: a case report by Yanfei Sun, Xiaofang Zhao, Mingchao Wang, Xiangkun Sun, Kunzhou Mei, Yameng Zhang, Yanwen Cui, Fang Yang

    Published 2025-01-01
    “…Case presentation We report a unique case of an 11-year-old boy with a severe periodontal-endodontic lesion on tooth 32, caused by prolonged, high-frequency, and high-intensity lip sucking. Initial clinical examination revealed gingival recession, Grade III mobility, deep periodontal pocket, and alveolar bone loss without obvious pathogenesis. …”
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  18. 578

    An effective electrocardiogram segments denoising method combined with ensemble empirical mode decomposition, empirical mode decomposition, and wavelet packet by Yaru Yue, Chengdong Chen, Xiaoyuan Wu, Xiaoguang Zhou

    Published 2023-06-01
    “…The ECG signal is decomposed using the EEMD for the first time, and then the highest frequency component is decomposed by the EMD for the second time, and the high frequency components obtained from the second time are decomposed and reconstructed by the WP for the third time. …”
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  19. 579

    The Ordovician strata of the Ennedi Plateau, northeastern Chad (Erdi Basin) by Ghienne, Jean-François, Moussa, Abderamane, Saad, Abakar, Djatibeye, Barnabé, Youssouf, Hissein Mahamat

    Published 2023-01-01
    “…In the Lower Sandstones, fluvial-dominated deposits (prevailing cross-stratification, NW to NNE paleocurrent trends) include intervening high-frequency marine incursions (tidal deposits, ichnofacies including Cruziana and Arthrophycus). …”
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  20. 580

    Current status and development trends in CKD with frailty research from 2000 to 2021: a bibliometric analysis by Guowei Yuan, Yaqin Yang, Yujie Lin, Jiarong Lin, Yuchi Wu

    Published 2024-12-01
    “…Next, publications were analyzed for information including authors, journals, cited references, citing journals, institutions, countries and regions, high-frequency keywords and co-citations using VOSviewer, Microsoft Excel, and R software.Results A total of 2223 articles were obtained, from which 613 relevant articles were selected based on title and abstract screening. …”
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