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  • 11
    In: National Science Review, Oxford University Press (OUP), Vol. 10, No. 6 ( 2023-05-10)
    Abstract: SARS-CoV and SARS-CoV-2 have been thought to originate from bats. In this study, we screened pharyngeal and anal swabs from 13 064 bats collected between 2016 and 2021 at 703 locations across China for sarbecoviruses, covering almost all known southern hotspots, and found 146 new bat sarbecoviruses. Phylogenetic analyses of all available sarbecoviruses show that there are three different lineages—L1 as SARS-CoV-related CoVs (SARSr-CoVs), L2 as SARS-CoV-2-related CoVs (SC2r-CoVs) and novel L-R (recombinants of L1 and L2)—present in Rhinolophus pusillus bats, in the mainland of China. Among the 146 sequences, only four are L-Rs. Importantly, none belong in the L2 lineage, indicating that circulation of SC2r-CoVs in China might be very limited. All remaining 142 sequences belong in the L1 lineage, of which YN2020B-G shares the highest overall sequence identity with SARS-CoV (95.8%). The observation suggests endemic circulations of SARSr-CoVs, but not SC2r-CoVs, in bats in China. Geographic analysis of the collection sites in this study, together with all published reports, indicates that SC2r-CoVs may be mainly present in bats of Southeast Asia, including the southern border of Yunnan province, but absent in all other regions within China. In contrast, SARSr-CoVs appear to have broader geographic distribution, with the highest genetic diversity and sequence identity to human sarbecoviruses along the southwest border of China. Our data provide the rationale for further extensive surveys in broader geographical regions within, and beyond, Southeast Asia in order to find the most recent ancestors of human sarbecoviruses.
    Type of Medium: Online Resource
    ISSN: 2095-5138 , 2053-714X
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 2745465-4
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  • 12
    In: Combustion Science and Technology, Informa UK Limited
    Type of Medium: Online Resource
    ISSN: 0010-2202 , 1563-521X
    Language: English
    Publisher: Informa UK Limited
    Publication Date: 2022
    detail.hit.zdb_id: 2027674-6
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  • 13
    Online Resource
    Online Resource
    International Academy Publishing (IAP) ; 2010
    In:  Journal of Software Vol. 5, No. 11 ( 2010-11-01)
    In: Journal of Software, International Academy Publishing (IAP), Vol. 5, No. 11 ( 2010-11-01)
    Type of Medium: Online Resource
    ISSN: 1796-217X
    Language: Unknown
    Publisher: International Academy Publishing (IAP)
    Publication Date: 2010
    detail.hit.zdb_id: 2269554-0
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  • 14
    Online Resource
    Online Resource
    Canadian Center of Science and Education ; 2012
    In:  Journal of Materials Science Research Vol. 2, No. 1 ( 2012-11-06)
    In: Journal of Materials Science Research, Canadian Center of Science and Education, Vol. 2, No. 1 ( 2012-11-06)
    Type of Medium: Online Resource
    ISSN: 1927-0593 , 1927-0585
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2012
    detail.hit.zdb_id: 2721815-6
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  • 15
    Online Resource
    Online Resource
    American Society of Agricultural and Biological Engineers (ASABE) ; 2023
    In:  Applied Engineering in Agriculture Vol. 39, No. 1 ( 2023), p. 121-132
    In: Applied Engineering in Agriculture, American Society of Agricultural and Biological Engineers (ASABE), Vol. 39, No. 1 ( 2023), p. 121-132
    Abstract: Highlights Proposed application of 3D CNNS for recognition of farming behavior. Transfer learning was used to speed up training and improve model accuracy. A farming behavior dataset was constructed, expanded and compared with previous studies. An object detection network was used for data preprocessing rather than using traditional methods. Abstract. The quality and quantity of crop yields in agriculture primarily depend on the timing and precision of various implemented farming behaviors. Basins and hills dominate southwest China. Due to topographical constraints, the rate of agricultural mechanization in the region remains low, and agriculture remains primarily non-mechanized. The acquisition and recognition of information on farming behaviors play an important role in crop production. In this article, transfer learning was used in a current state-of-the-art 3DCNN-based behavior recognition model for farming behavior recognition and classification tasks. The focus was on fine-tuning and evaluating state-of-the-art 3D convolutional neural networks for farming behavior recognition. The evaluated architectures included Res3D, MC3, and R2+1D. The six common farming behaviors recognized include weeding, planting, harvesting, transplanting, fertilizing, and spraying. The accuracy of all models pretrained on Kinetics-400 after fine-tuning exceeded 90%, where MC3 had the best performance, with an accuracy of 0.9628, precision of 0.9647, sensitivity of 0.963, and specificity of 0.9925, which was slightly greater than the other two. MC3 was also the most lightweight of all models; its parameters were only 32.6% of Res3D and 36.7% of R2+1D. The experimental results demonstrated that the fine-tuned MC3 model offers high classification accuracy and effective recognition and classification of farming behaviors, which lays a good foundation for improved crop production. Keywords: Deep learning, Farming behavior recognition, Farm management, Fine-tuning, Precision agriculture, 3D convolutional neural networks, Transfer learning.
    Type of Medium: Online Resource
    ISSN: 1943-7838
    Language: English
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)
    Publication Date: 2023
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  • 16
    In: Plant Breeding, Wiley, Vol. 134, No. 1 ( 2015-02), p. 11-16
    Abstract: To develop genetic markers associated with tolerance to low phosphorus, we identified candidate phosphate starvation responsive ( PSR ) genes and developed their intron length polymorphism ( ILP ) markers in maize on a genome‐wide scale. Based on the known plant PSR genes, 161 candidate PSR genes were identified. Of these genes, 138 genes contained at least one intron and were then used to develop 606 PSR ‐ ILP markers by designing PCR primers to the intron‐flanking exonic regions. PCR evaluation was performed on 43 randomly selected PSR ‐ ILP markers in 30 maize inbred lines. Of the primers, 88.4% amplified stable and pure products in all maize inbred lines, and 53.5% of the markers showed ILP , with PIC values ranging from 0.06 to 0.80. The result of clustering analysis of the 30 maize inbred lines, based on the polymorphism of 23 ILP markers, suggests that the ILP markers developed in this study are not only efficient for genetic diversity analysis but also potentially useful for marker assisted selection for tolerance to low phosphorus.
    Type of Medium: Online Resource
    ISSN: 0179-9541 , 1439-0523
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2015
    detail.hit.zdb_id: 2020488-7
    SSG: 12
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  • 17
    Online Resource
    Online Resource
    MDPI AG ; 2022
    In:  Energies Vol. 15, No. 13 ( 2022-06-24), p. 4625-
    In: Energies, MDPI AG, Vol. 15, No. 13 ( 2022-06-24), p. 4625-
    Abstract: Evaluation of driving behaviour is helpful for policy development, and for designing infrastructure and an intelligent safety system for a car. This study focused on a quantitative evaluation method of driving behaviour based on the shared-electrical car. The data were obtained from the OBD interface via CAN bus and transferred to a server by 4G network. Eleven types of NDS data were selected as the indexes for driving behaviour evaluation. Kullback–Leibler divergence was calculated to confirm the minimum data quantity and ensure the effectiveness of the analysis. The distribution of the main driving behaviour parameters was compared and the change trend of the parameters was analysed in conjunction with car speed to identify the threshold for recognition of aberrant driving behaviour. The weights of indexes were confirmed by combining the analytic hierarchy process and entropy weight method. The scoring rule was confirmed according to the distribution of the indexes. A score-based evaluation method was proposed and verified by the driving behaviour data collected from randomly chosen drivers.
    Type of Medium: Online Resource
    ISSN: 1996-1073
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2437446-5
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  • 18
    In: Advances in Civil Engineering, Hindawi Limited, Vol. 2023 ( 2023-3-2), p. 1-24
    Abstract: To study the aseismic performance after the reinforcement of the mortise-tenon joints of folk houses with traditional Chuan-Dou style wood structure and their steel plate, test specimens of joints—two for Tou mortise-tenon joints, two for Ban mortise-tenon joints, and two for dovetail mortise-tenon joints—were fabricated out of hemlock, and steel plates were utilized to reinforce one of the joint specimens of each type on the middle part of the mortise-tenon joint. By carrying out pseudo-static tests on the joints and building ABAQUS numerical model; the position where the mortise-tenon joints were to be reinforced by the steel plates was optimized for a comparative analysis into the test results on reinforced and unreinforced mortise-tenon joints and the numerically simulated bending moment-turning angle hysteresis curve, skeleton curve, energy-dissipating capacity, and rigidity degeneration curves. The results showed the following: the pulling-out phenomenon of tenons was severe, and the aseismic performance of Tou tenons was superior to Ban tenons and dovetail tenons; reinforcing the middle part of mortise-tenon joints with steel plates could effectively reduce the pulling-out amount of joints and promote the aseismic performance of mortise-tenon joints but have an insignificant promotive effect for the bearing capacity of Tou mortise-tenon joints; the aseismic performance was improved significantly after the flat steel strip reinforced position was moved to the upper and lower ends of mortise-tenon joints, with the ultimate bearing capacities being 1.5∼2.4 times that on the middle part of flat steel strip reinforced joints.
    Type of Medium: Online Resource
    ISSN: 1687-8094 , 1687-8086
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2023
    detail.hit.zdb_id: 2449760-5
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  • 19
    In: Computational Intelligence and Neuroscience, Hindawi Limited, Vol. 2022 ( 2022-5-6), p. 1-10
    Abstract: Background. Lung metastasis greatly affects medical therapeutic strategies in osteosarcoma. This study aimed to develop and validate a clinical prediction model to predict the risk of lung metastasis among osteosarcoma patients based on machine learning (ML) algorithms. Methods. We retrospectively collected osteosarcoma patients from the Surveillance Epidemiology and End Results (SEER) database and from four hospitals in China. Six ML algorithms, including logistic regression (LR), gradient boosting machine (GBM), extreme gradient boosting (XGBoost), random forest (RF), decision tree (DT), and multilayer perceptron (MLP), were applied to build predictive models for predicting lung metastasis using patient’s demographics, clinical characteristics, and therapeutic variables from the SEER database. The model was internally validated using 10-fold cross-validation to calculate the mean area under the curve (AUC) and the model was externally validated using the Chinese multicenter osteosarcoma data. Relative importance ranking of predictors was plotted to understand the importance of each predictor in different ML algorithms. The correlation heat map of predictors was plotted to understand the correlation of each predictor, selecting the 10-fold cross-validation with the highest AUC value in the external validation ROC curve to build a web calculator. Results. Of all enrolled patients from the SEER database, 17.73% (194/1094) developed lung metastasis. The multiple logistic regression analysis showed that sex, N stage, T stage, surgery, and bone metastasis were all independent risk factors for lung metastasis. In predicting lung metastasis, the mean AUCs of the six ML algorithms ranged from 0.711 to 0.738 in internal validation and 0.697 to 0.729 in external validation. Among the six ML algorithms, the extreme gradient boosting (XGBoost) model had the highest AUC value with an average internal AUC of 0.738 and an external AUC of 0.729. The best performing ML algorithm model was used to build a web calculator to facilitate clinicians to calculate the risk of lung metastasis for each patient. Conclusions. The XGBoost model may have the best prediction effect and the online calculator based on this model can help doctors to determine the lung metastasis risk of osteosarcoma patients and help to make individualized medical strategies.
    Type of Medium: Online Resource
    ISSN: 1687-5273 , 1687-5265
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2022
    detail.hit.zdb_id: 2388208-6
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  • 20
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2016
    In:  Environmental Earth Sciences Vol. 75, No. 5 ( 2016-3)
    In: Environmental Earth Sciences, Springer Science and Business Media LLC, Vol. 75, No. 5 ( 2016-3)
    Type of Medium: Online Resource
    ISSN: 1866-6280 , 1866-6299
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2016
    detail.hit.zdb_id: 2493699-6
    SSG: 13
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