Showing 21 - 40 results of 37,054 for search 'sample three (selection OR detection)', query time: 0.39s Refine Results
  1. 21

    Ion selective electrodes based on methyl 6-(hydroxymethyl) picolinate ionophore for electrochemical determination of Fe(III) in petroleum water samples by Tamer Awad Ali, Gehad G. Mohamed, Hassan Eldessouky, A-El. Adeeb

    Published 2019-06-01
    “…A potentiometric method was described for the determination of iron(III) in petroleum water samples using modified carbon paste and screen-printed sensors. …”
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    IoT intrusion detection method for unbalanced samples by ANTONG P, Wen CHEN, Lifa WU

    Published 2023-02-01
    “…In recent years, network traffic increases exponentially with the iteration of devices, while more and more attacks are launched against various applications.It is significant to identify and classify attacks at the traffic level.At the same time, with the explosion of Internet of Things (IoT) devices in recent years, attacks on IoT devices are also increasing, causing more and more damages.IoT intrusion detection is able to distinguish attack traffic from such a large volume of traffic, secure IoT devices at the traffic level, and stop the attack activity.In view of low detection accuracy of various attacks and sample imbalance at present, a random forest based intrusion detection method (Resample-RF) was proposed, which consisted of three specific methods: optimal sample selection algorithm, feature merging algorithm based on information entropy, and multi-classification greedy transformation algorithm.Aiming at the problem of unbalanced samples in the IoT environment, an optimal sample selection algorithm was proposed to increase the weight of small samples.Aiming at the low efficiency problem of random forest feature splitting, a feature merging method based on information entropy was proposed to improve the running efficiency.Aiming at the low accuracy problem of random forest multi-classification, a multi-classification greedy transformation method was proposed to further improve the accuracy.The method was evaluated on two public datasets.F1 reaches 0.99 on IoT-23 dataset and 1.0 on Kaggle dataset, both of which have good performance.The experimental results show that the proposed model can effectively identify the attack traffic from the massive traffic, better prevent the attack of hackers on the application, protect the IoT devices, and thus protect the related users.…”
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    THE TESTING OF THE VIETNAMESE RICE SAMPLES IN THE ROSTOV REGION by P. I. Kostylev, Е. V. Krasnova, А. V. Aksenov

    Published 2019-11-01
    “…The vegetation period “sproutsflowering” varied from 85 to 142 days. All samples had a modern low-growing habit of plants with vertical rigid leaves and long drooping panicles (17.3–24.3 cm). …”
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    Detecting 3D Salinity Anomalies from Soil Sampling Points: A Case Study of the Yellow River Delta, China by Zhoushun Han, Xin Fu, Jianing Yu, Hengcai Zhang

    Published 2024-09-01
    “…To overcome this problem, this study proposes a 3D Soil-Salinity Anomaly Structure Extraction (3D-SSAS) methodology to discover soil-salinity anomalies and step forward in revealing the irregular 3D structure of soil-anomaly salinity areas from limited sampling points. …”
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  12. 32

    Reusable thiophene-based fluorescent sensor for detection of toxic Au³ ⁺ in real samples: Integrated spectroscopic and computational insight by Hasher Irshad, Katrine Qvortrup

    Published 2025-11-01
    “…Therefore, real samples were also analyzed for the trace detection of Au3+ and ultra-fast, reversible and quantitative detection of Au3+ was achieved.…”
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    Room-temperature upcycling of agricultural waste to carbon dots and its application as a selective fluorescence nanoprobe for iron (III) analysis in diverse samples by Heba M. Hashem, Mahmoud El-Maghrabey, Hadir Borg, Galal Magdy, Fathalla Belal, Rania El-Shaheny

    Published 2025-12-01
    “…As well, the C-dots exhibit high water stability and aqueous solubility, and a tiny particle size of 1.74 ± 0.44 nm. Based on the selective quenching of the synthesized C-dots fluorescence by Fe3+, a new fast and green fluorescence probe has been validated for the determination of Fe3+over the concentration range of 1.0–400.0 µM with a detection limit of 0.2 µM (11.2 ppb). …”
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    Keypoint Detection Based on Curvature Grouping and Adaptive Sampling by Bifu Li, Yu Cheng, Weitong Li

    Published 2025-01-01
    “…In the keypoint detection algorithm, the farthest point sampling methods and random sampling methods are usually used to select candidate points, then keypoints are screened out from the neighborhood of the candidate points. …”
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    Few-Shot Object Detection via Sample Processing by Honghui Xu, Xinqing Wang, Faming Shao, Baoguo Duan, Peng Zhang

    Published 2021-01-01
    “…In this paper, a novel FSOD model via sample processing, namely, FSSP, is proposed to detect objects accurately with only a few annotated samples, which is based on the structural design of the Siamese network and uses YOLOv3-SPP as the baseline. …”
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    Optimising Wastewater Sample Processing for Multiple Pathogen Detection by Miss Shannon Fitz, Debora Akortia, Richard Larbi, Richard Owusu, Gifty Nkrumah, Dr Joyce Akello, Catherine Troman, Dr Jaspreet Mahindroo, Dr Anton Spader, Dr Ben Bellekom, Piya Rajendra, Professor Yaw Adu-Sarkodie, Dr Ellis Owusu-Dabo, Dr Nicholas Grassly, Dr Dilip Abraham, Professor Venkata Raghava Mohan, Dr Michael Owusu, Dr Alex Shaw

    Published 2025-03-01
    “…Introduction: Environmental surveillance (ES) provides valuable insight into emergence, transmission, and spread of infectious diseases, yet can be expensive to perform. The simultaneous detection of multiple pathogens in wastewater can make the process more cost-effective, yet the majority of protocols for ES are often optimised for the detection of single pathogens. …”
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