Showing 1,821 - 1,840 results of 3,553 for search 'different threshold (method OR methods)', query time: 0.19s Refine Results
  1. 1821

    De-noising algorithms for the raised cosine pulse signal using the minimum-energy frame in the discrete signal space by Ying-hai XIE, Wei YANG, Ting-ting FAN

    Published 2012-03-01
    “…The de-noising algorithms were proposed for the raised cosine pulse signal using minimum-energy(wavelet) frame in the discrete signal space.For the given two minimum-energy frames,the decomposition coefficients of sampled sequence appeared significant statistical characteristics difference between the raised cosine pulse signal and additive Gaussian noise under the frames’sub-sequences.Based on this,two threshold de-noising algorithms were provided to makes full use of the merit that the frame was fit for the de-noising work,they removed partial noise component while keeping the component of original signal and got effic nt de-noising result.The simulation results show that,when the modulating method is BPSK and its raised cosine pulse signal is polluted by the additive Gaussian noise,then if add a pre-processing link to denoise the receiving waveform using the algorithms,the receiver can greatly increase the signal-to-noise ratio of receiving signal and have about 3.1dB and 2.7dB performance gain of bit error ratio,respectively.…”
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  2. 1822

    How Do We Teach the Skills and Values in Social Sciences and History Courses? by Neşet Mutlu, Mustafa Öztürk

    Published 2017-12-01
    “…According to the findings of this investigation, major part of the high school students enrolled in the investigation were determined to be in risk group and threshold group in terms of internet addiction. Statistically significant difference between withdrawal, controlling difficulty, disorder in functionality and social isolation points regarding internet addiction was determined depending on daily internet usage duration. …”
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    Article
  3. 1823

    De-noising algorithms for the raised cosine pulse signal using the minimum-energy frame in the discrete signal space by Ying-hai XIE, Wei YANG, Ting-ting FAN

    Published 2012-03-01
    “…The de-noising algorithms were proposed for the raised cosine pulse signal using minimum-energy(wavelet) frame in the discrete signal space.For the given two minimum-energy frames,the decomposition coefficients of sampled sequence appeared significant statistical characteristics difference between the raised cosine pulse signal and additive Gaussian noise under the frames’sub-sequences.Based on this,two threshold de-noising algorithms were provided to makes full use of the merit that the frame was fit for the de-noising work,they removed partial noise component while keeping the component of original signal and got effic nt de-noising result.The simulation results show that,when the modulating method is BPSK and its raised cosine pulse signal is polluted by the additive Gaussian noise,then if add a pre-processing link to denoise the receiving waveform using the algorithms,the receiver can greatly increase the signal-to-noise ratio of receiving signal and have about 3.1dB and 2.7dB performance gain of bit error ratio,respectively.…”
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    Article
  4. 1824

    Investigating the impact of non-standard positioning on the accuracy of skull tracking algorithms using dual-panel imaging systems by He Huang, Lian Zhang, Yunfei Bian, Yang Dong, Hongyu Lin, Hui Xu, Ying Li

    Published 2024-11-01
    “…The system was then switched to 6D-skull tracking to observe the corresponding offset. The difference between the two tracking methods was calculated, and a paired-sample T-test was conducted to assess statistical significance across different angles. …”
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  5. 1825

    %diag_test: a generic SAS macro for evaluating diagnostic accuracy measures for multiple diagnostic tests by Jacques K. Muthusi, Peter W. Young, Frankline O. Mboya, Samuel M. Mwalili

    Published 2025-01-01
    “…It is simple to use as the user only needs to specify the input dataset, “standard” and “test” variables and threshold values. It creates a publication-quality output in Microsoft Word and Excel showing more than 15 different accuracy measures together with overlaid AUROC and AUPRC graphics to help the researcher in making decisions to adopt or reject diagnostic tests. …”
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    Article
  6. 1826

    Further validation of the Chinese short Warwick Edinburgh mental wellbeing scale in the adult population of Macau: an application of classic test theory and item response theory by Lawrence T. Lam, Lawrence T. Lam, Lawrence T. Lam, Mary K. Lam

    Published 2025-02-01
    “…The Grade Response Model (GRM) of the IRT analysis was applied to the data, estimating the discrimination and difficulty parameters at different thresholds. The results were analyzed both graphically and through parameter values.ResultsFactor analyses confirmed that a single-factor model of the scale fit the data well, with an overall Eigenvalue of 4.55, explaining 65.0% of the total variance. …”
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  7. 1827

    Time–frequency ensemble network for wind turbine mechanical fault diagnosis by Haiyu Guo, Xingzheng Guo, Xiaoguang Zhang, Fanfan Lu, Chuang Liang

    Published 2025-06-01
    “…However, most existing methods extract fault features from a single domain, failing to capture the signals’ diverse and complex characteristics. …”
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  8. 1828

    INFLUENCE OF IONIZING IRRADIATION ON THE PARAMETERS OF ZN NANOTUBES ARRAYS FOR DESIGN OF FLEXIBLE ELECTRONICS ELEMENTS by D. B. Kadyrzhanov, M. V. Zdorovets, A. L. Kozlovskiy, A. V. Petrov, V. D. Bundyukova, A. E. Shumskaya, E. Yu. Kaniukov

    Published 2018-03-01
    “…The aim of the study is establishing the possibility of using Zn nanotube arrays as a basis for design compact and lightweight elements of flexible electronics, including operating under influence of ionizing irradiation.The paper presents the results of the synthesis of Zn nanotubes obtained by electrochemical deposition in the pores of polymer matrices and the study of their structural and electrophysical properties after directional modification by ionizing radiation with different doses. Using the methods of scanning electron microscopy, X-ray diffraction and energy dispersive analysis, the structure of nanotubes having a polycrystalline structure and completely consisting of zinc was studied and it was demonstrated that irradiation with Ar8+ ions with a dose from 1 × 109 to 5 × 1011 ion/cm2 and energy 1.75 MeV/nucleon has an effect on the crystal structure of nanotubes.At high doses, localized highly defect zones arise, leading to a critical change in the structure and physical properties of the nanotubes, respectively. …”
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  9. 1829

    Current strategies in the farm practices and post-harvest pesticidal defence by Luciano Suss, Fabio Molinari

    Published 2008-04-01
    “…However, substantial differences exist between agriculture and post-harvest, thus the integrated pest management in food production environment has to be designed in a different way. …”
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  10. 1830

    Positive mental wellbeing or symptoms of depression? Discriminant validity of the Warwick-Edinburgh Mental Wellbeing Scale by Leif Edvard Aarø, Marit Knapstad, Otto Robert Smith

    Published 2025-05-01
    “…PMHC offers low-threshold treatment for patients with mild to moderate depression or anxiety. …”
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  11. 1831

    Transcutaneous auricular VNS applied to experimental pain: A paired behavioral and EEG study using thermonociceptive CO2 laser. by Manon Dumoulin, Giulia Liberati, André Mouraux, Susana Ferrao Santos, Riëm El Tahry

    Published 2021-01-01
    “…<h4>Objective</h4>This study aimed to characterize how taVNS alters pain perception, by investigating its effects on event-related potentials (ERPs) elicited by different types of spinothalamic and lemniscal somatosensory stimuli, combined with quantitative sensory testing (detection threshold and intensity ratings).…”
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  12. 1832

    Preprocedural Mouthrinse During Dental Treatment in Covid -19 Patients: A Meta- analysis by Supinder Sudan, T.L Ravishankar, Puja C. Yavagal, M.D Nazamuddin Tafadar

    Published 2024-10-01
    “…Review Methods The registration of the protocol of the study was done under the number CRD42022325615 at the International Prospective Register of Systematic Reviews. …”
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  13. 1833

    vPro-MS enables identification of human-pathogenic viruses from patient samples by untargeted proteomics by Marica Grossegesse, Fabian Horn, Andreas Kurth, Peter Lasch, Andreas Nitsche, Joerg Doellinger

    Published 2025-07-01
    “…The specificity is determined to be >99,9% in an analysis of 221 plasma, swab and cell culture samples covering 17 different viruses. The sensitivity of this approach for the detection of SARS-CoV-2 in nasopharyngeal swabs corresponds to a PCR cycle threshold of 27 with comparable quantitative accuracy to metagenomics. vPro-MS enables the integration of untargeted virus identification in large-scale proteomic studies of biofluids such as human plasma to detect previously undiscovered virus infections in patient specimens.…”
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  14. 1834

    Identification of candidates with hepatocellular carcinoma to receive TACE combined with MWA by assessing tumor burden and radiologic features by Chao An, Lujun Shen, Qifeng Chen, Yiquan Jiang, Chen Li, He Ren, Peihong Wu, Xi Liu

    Published 2025-03-01
    “…Moreover, the TBR score provided greater net benefit across the range of reasonable threshold probabilities than other models. Based on cutoff values of 32 and 74 centiles of the TBR score, the cohort was divided into low-, middle-, and high-risk strata, which provide consistent performance in survival discrimination across different patient subgroups. …”
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  15. 1835

    Analysis of the circadian rhythm of intraocular pressure in stable and progressive forms of primary open-angle glaucoma by T. N. Malishevskaya, D. G. Gubin, I. V. Nemcova, A. S. Vlasova, Ju. E. Filippova, E. E. Farikova, D. S. Bogdanova

    Published 2019-12-01
    “…IOP daily dynamics was distributed differently in the different groups. In S-POAG, the peak values were mainly reached in the morning hours, while the minimum values were observed at night. …”
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  16. 1836

    The nonlinear correlation of neutrophil-lymphocyte ratio on 1-year mortality risk in patients with severe acute heart failure by Yunchao Deng, Jian Lin, Chuang Li, Rong Tian, Bo Liu

    Published 2025-04-01
    “…Abstract Background This retrospective cohort study was designed to examine the relationship between the neutrophil-lymphocyte ratio (NLR) and the 1-year risk of death in patients with acute heart failure (AHF) in the intensive care unit (ICU). Methods We retrospectively analyzed 1,176 patients with AHF from the MIMIC-IV database. …”
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  17. 1837

    C1q Levels: A Reliable Biomarker for Differentiating Active and Latent Tuberculosis Infection by Sepideh Darougar, Afshin Moniri, Parvaneh Baghaei, Esmaeil Mortaz, Makan Sadr, Arad Moniri, Majid Marjani, Payam Tabarsi

    Published 2024-12-01
    “…The area under the receiver operating characteristic curve for C1q in distinguishing active from latent TB was 0.74 (95% confidence interval, 0.63–0.85), with sensitivity varying between 61% and 82% at different threshold values. Conclusions: C1q shows potential as a reliable and easily obtainable biomarker for differentiating active TB from latent infection, demonstrating high sensitivity. …”
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  18. 1838

    CN2VF-Net: A Hybrid Convolutional Neural Network and Vision Transformer Framework for Multi-Scale Fire Detection in Complex Environments by Naveed Ahmad, Mariam Akbar, Eman H. Alkhammash, Mona M. Jamjoom

    Published 2025-05-01
    “…These results outperform existing methods by 1.6% in precision, 0.3% in recall, and 3.4% in F1-score. …”
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  19. 1839

    Association of neutrophil-percentage-to-albumin ratio with mortality in older stroke survivors by Jie Huang, Xiaowei Zhang, Luyao Ding, Jiaxiang Yu, Mingshen Lin

    Published 2025-05-01
    “…However, its association with mortality in elderly stroke survivors has not been explored.MethodsThis cohort study analyzed data from 1,026 elderly stroke survivors in the National Health and Nutrition Examination Survey (NHANES, 1999-2018). …”
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  20. 1840

    Clinical Characteristics and Outcomes for Neonates with Respiratory Failure Referred for Extracorporeal Membrane Oxygenator (ECMO) Support by Pooja Musuku, Keith Meyer, Felipe E. Pedroso, Fuad Alkhoury, Balagangadhar R. Totapally

    Published 2025-07-01
    “…Youden’s index was used for optimal threshold values. Chi-square, Mann–Whitney U, and binary logistic regression were used for comparative analyses. …”
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