Showing 1,721 - 1,740 results of 18,993 for search 'sampling more (method OR methods)', query time: 0.33s Refine Results
  1. 1721

    Low complexity radar signal classification based on spectrum shape by Liang YIN, Rui LIN, Xiaolei WANG, Yuliang YAO, Lin ZHOU, Yuan HE

    Published 2022-01-01
    “…In order to solve the problems of high computational complexity, low recognition accuracy of low signal to noise ratio (SNR) environment and low fidelity of simulation data in radar signal modulation recognition, a low complexity radar signal classification algorithm based on spectrum shape was proposed.Signal spectrum was normalized, feature parameters were extracted by spectrum sampling method, and then machine learning classification model was trained.The test results of the data generated by the radar signal source show that the classification accuracy of Barker code, Frank code, LFM code, BPSK, QPSK modulation and conventional radar signals is more than 90% (SNR≥3 dB).The algorithm has low computational complexity, can adapt to the change of signal parameters, and has good generalization.…”
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  2. 1722

    Prevalence and factors associated with the multiple morbidity of postpartum depression, diabetes mellitus and hypertension among mothers in Mbarara district, south western Uganda:... by Catherine Atuhaire, Kabanda Taseera, Daniel Atwine, Samuel Maling, Francis Bajunirwe, Godfrey Zari Rukundo

    Published 2025-06-01
    “…Therefore, this study aimed at examining the prevalence and factors associated with these comorbidities among mothers in public health facilities in Mbarara, south western Uganda. Methods: We conducted a facility based cross sectional study using parallel convergent mixed methods to collect information from 309 postpartum mothers from 6 weeks to 6 months after childbirth. …”
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  3. 1723

    The Evaluation of importance of ergonomic behaviors in an Iranian petrochemical company by entropy by M Khandan, M Maghsoudipour, Sh Vosoughi

    Published 2012-10-01
    “…This study was conducted in Khuzestan petrochemical company, which is located in the south of Iran, in 2010. Methods: The methodology was based on the Ergonomic Behavior Sampling (EBS), and by entropy. …”
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  4. 1724

    Efficient multi‐perspective jamming feature perception network for suppressive jamming recognition with limited training samples by Minghua Wu, Yupei Lin, Dongyang Cheng, Xiaohai Zou, Bin Rao, Wei Wang

    Published 2024-11-01
    “…This method extracts features from the time‐frequency spectrum of jamming signals from multiple perspectives, including local, multi‐scale, cross‐space, and global, to obtain more robust and discriminative jamming features and improve recognition under limited training sample conditions. …”
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  5. 1725

    Obtaining self-samples to diagnose curable sexually transmitted infections: a systematic review of patients' experiences. by Priyamvada Paudyal, Carrie Llewellyn, Jason Lau, Mohammad Mahmud, Helen Smith

    Published 2015-01-01
    “…Previous studies suggest that clinic-based screening programmes capture only a small proportion of people with STIs. Self-sampling using non- or minimally invasive techniques may be beneficial for those reluctant to actively engage with conventional sampling methods. …”
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  6. 1726
  7. 1727

    Advancing sustainable agricultural: A novel framework for mapping annual 30-m resolution national-level irrigated croplands by Enyu Du, Fang Chen, Huicong Jia, Jinwei Dong, Lei Wang, Yu Chen

    Published 2025-06-01
    “…This study presents an innovative method for mapping irrigated and rainfed croplands in mainland China with a local adaptive random forest classifier on the Google Earth Engine platform. …”
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    Article
  8. 1728

    Identifying Parental Feeding Patterns in a Spanish Sample of Toddlers Using a Latent Class Analysis by Mar Lozano‐Casanova, Silvia Escribano, Isabel Sospedra, Antonio Oliver‐Roig, Miguel Richart‐Martinez

    Published 2025-04-01
    “…The aims of this study are to: (a) identify different parental feeding styles in a Spanish sample using LCA; (b) explore the characteristics of the classes of different parenting styles, taking into account sociodemographic and psychological variables; and (c) compare the classification of parental feeding styles by assessment method: LCA versus the median split cut‐off point to determine high and low levels for each dimension. …”
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  9. 1729
  10. 1730

    Preparation of noninfectious scRNAseq samples from SARS-CoV-2-infected epithelial cells. by Raven M Osborn, Justin Leach, Michelle Zanche, John M Ashton, ChinYi Chu, Juilee Thakar, Stephen Dewhurst, Sonia Rosenberger, Martin Pavelka, Gloria S Pryhuber, Thomas J Mariani, Christopher S Anderson

    Published 2023-01-01
    “…Federal Select Agent Program, as of 2020, and only a subset of these are outfitted with the equipment needed to perform high-throughput molecular assays. Here, we describe a method for preparing non-hazardous RNA samples from SARS-CoV-2 infected cells, that enables scRNAseq analyses to be conducted safely in a BSL2 facility-thereby making molecular assays of SARS-CoV-2 cells accessible to a much larger community of researchers. …”
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  11. 1731

    Accuracy and acceptability of self-sampling HPV testing in cervical cancer screening: a population-based study in rural Yunnan, China by Rufei Duan, Hongying Yang, Xiuwei Zhai, Jing Yu, Chen Lu, Wenmin Yang, Tingfeng Long, Yan Dao, Gaofeng Li, Yongchun Zhou, Hongyi Zheng, Fanghui Zhao, Yong-Tang Zheng, Yunchao Huang

    Published 2025-07-01
    “…Self-sampling HPV DNA testing demonstrated comparable clinical accuracy to provider-sampling test and were more accurate than that of mRNA test and AI-assisted cytology. …”
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  12. 1732
  13. 1733

    Bio-electrokinetic improvement of deltaic soil by Mohammad Nabizadeh, Abbas Soroush, Seyed Mohammad Fattahi, Abolfazl Eslami

    Published 2025-05-01
    “…Microstructure analyses were conducted on samples, and calcite and vaterite were observed in bio-cemented samples.…”
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  14. 1734
  15. 1735

    Modelling temporal change in inventory attributes from a LiDAR-derived inventory for the United Counties of Prescott and Russell, Ontario: A comparison of random forest and linear... by Benjamin Gwilliam

    Published 2022-11-01
    “…Both 2nd order polynomial regression and random forest learning methods were used to model annual growth increments for these attributes and results were compared. …”
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  16. 1736

    Total protein content in samples of dry red wine from various manufacturers for quality and authenticity control by Gasanova Dariya, Yang Jun-Lin, Chen Xiao-Yi, Smirnov Sergey, Levashov Pavel

    Published 2025-01-01
    “…Wine quality control is performed, which is based on spectrophotometric determination of total protein content with use of Coomassie G-250 dye, combined with analysis of optical absorbance spectra of wine samples. This approach is characterized by simplicity of procedure, rapidity and high availability of reagents and equipment, and all this makes it applicable for quality control of wine by practically any laboratory, and for visual qualitative analysis in field and home conditions. 10 samples of dry red grape wine are analyzed, and total protein content varies by no more than 35% from the average value among all samples, which is 248 μg/mL. …”
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  17. 1737

    Men who have sex with men perceiving that sex with women carries the greatest risk of HIV acquisition: results from a mixed‐methods systematic review in sub‐Saharan Africa by Marion Fiorentino, Marie Dos Santos, August Eubanks, Nathan Yanwou, Christian Laurent, Perrine Roux, Bruno Spire

    Published 2024-12-01
    “…Results Twenty studies were selected. More MSM perceived that the greatest risk of HIV acquisition came from heterosexual/vaginal sex than from homosexual/anal sex (53% vs. 15%; 51% vs. 39%; 42% vs. 8%; 27% vs. 25%; 43% vs. 11%; 23% vs. 13%; 35% vs. 16%, cumulative sample n = 4396, six countries). …”
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  18. 1738

    Establishing a European wastewater pathogen monitoring network employing aviation samples: a proof of concept by Robert Morfino, Bernd Manfred Gawlik, Simona Tavazzi, Angela Tessarolo, Ana Burgos Gutierrez, Nita K. Madhav, Jasmine Grimsley, Amy Schierhorn, Andrew Franklin, Marta Vargha, Andrew Engeli, Mitchell Wolfe

    Published 2025-03-01
    “…Samples were collected from eight airports over two weeks, employing various methods for different types of wastewater, including samples from terminals and aircraft. …”
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  19. 1739

    Automated capillary electrophoresis analyses of dried blood samples after patient-centric volumetric absorptive microsampling by Richard Maršala, Miloš Dvořák, Pavel Kubáň

    Published 2025-02-01
    “…An automated method for the analysis of dried blood samples collected by volumetric absorptive microsampling (VAMS) is presented for the first time. …”
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  20. 1740

    Influence of Loading Time of a Load Plate and Sample Size on the Measurement of Physical Properties of Resilient Materials by Kyoung woo KIM, Jun oh YEON, Kwan seop YANG, Myung jun KIM

    Published 2015-04-01
    “…Since the test to infer long-term deformation of resilient materials after a period of 10 years in some samples showed variation characteristics different from those specified in the standards, it is recommended that the test method should be reviewed through ongoing research.…”
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