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521
Dynamics of a Stage Structure Pest Control Model with Impulsive Effects at Different Fixed Time
Published 2009-01-01“…We also present a pest management strategy in which the pest population is kept under the economic threshold level (ETL) when the pest population is uniformly permanent. …”
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522
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523
Investigating the general effects of different types of toluene exposure on the health of workers: an integrative review of the literature
Published 2025-04-01“…Notable exclusion criteria were non-human studies, pregnant women, paediatric and geriatric populations, and studies addressing toluene abuse and not occupational exposure.Data extraction and synthesis 27 studies met the eligibility criteria and were appraised using the Mixed Methods Appraisal Tool. Data were systematically extracted, guiding the synthesis of various themes, namely acute exposure effects, chronic exposure effects, short-term effects, long-term effects, low-dose effects, high-dose effects and reversible versus irreversible effects.Results The review demonstrated that occupational toluene exposure impacts health differently depending on the nature and context of the exposure. …”
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524
Clinical-functional peculiarities of stable angina of different functional classes considering myocardial infarction in an anamnesis
Published 2020-12-01“…To study clinical-functional peculiarities of stable angina pectoris (SAP) of different functional classes (FC) with post-infarction and diffuse cardiosclerosis. …”
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525
Response Patterns of Vegetation Phenology along Urban-Rural Gradients in Urban Areas of Different Sizes
Published 2020-01-01“…The results showed that the following: (1) the iterative extraction of urban built-up areas using the threshold method based on nighttime light data combined with the definition of urban built-up areas had high accuracy. (2) Additionally, we found that the start of the growing season (SOS) in Liaoning Province occurred between day 100 and day 180, while the end of the growing season (EOS) occurred between days 260 and 330. …”
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526
Presence and detection methods of pseudo-periods in GNSS coordinate time series
Published 2025-07-01“…Based on this observation, we proposed the AIC_diff (Akaike Information Criterion Difference) pseudo-period detection method with the threshold as −5, indicating that the signal is more likely to be a pseudo-period, if the AIC_diff exceeds −5. …”
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527
Evaluation of Image Segmentation Methods for In Situ Quality Assessment in Additive Manufacturing
Published 2024-11-01“…This research evaluated five image segmentation methods (simple thresholding, adaptive thresholding, Sobel edge detector, Canny edge detector, and watershed transform) on the same platform for their effectiveness in isolating and identifying features in 3D-printed layers under different contrast conditions for in situ quality assessment. …”
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528
Estimation of Genetic Parameters for Growth and Acute Hepatopancreatic Necrosis Resistance in Different Strains of Penaeus vannamei
Published 2024-12-01“…The heritability estimates of survival time and half-lethal survival rate were 0.374± 0.096 and 0.257±0.048, respectively, indicating a moderate level of genetic heritability, and all significantly different from 0 (P < 0.01). The genetic correlation between weight and AHPND resistance traits (survival time and half-lethal survival rate) in both strains showed a low positive correlation (0.061–0.235), and no significant difference was observed from 0 (P > 0.05). …”
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529
Research on Quantitative Safety Risk Assessment Methods at Vehicle Controllability Level
Published 2025-01-01“…The model is applied in multiple simulation scenarios to assess vehicle controllability under different conditions. Additionally, the safety boundaries of motor torque are determined at varying speeds, providing insights into critical thresholds beyond which the vehicle’s controllability may be compromised. …”
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530
Scientific Opinion on Norovirus (NoV) in oysters: methods, limits and control options
Published 2012-01-01“…Abstract NoV is highly infectious, and there is no threshold infectivity limit for NoV detected by PCR. …”
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531
Reliability of hemodynamic parameters measured by bioimpedance cardiography at different intensities during incremental exercise testing
Published 2025-04-01“…BackgroundBioimpedance cardiography offers a non-invasive and time-efficient method to measure hemodynamic parameters. Previous studies only investigated its reliability under steady-state conditions and at maximum load but not at ventilatory thresholds (VTs). …”
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532
Sex differences in the prediction of metabolic abnormalities via body mass index in an Eastern Chinese population
Published 2025-02-01“…ObjectiveBody mass index (BMI) is important for predicting the occurrence of metabolic abnormality, but sex differences exist. We aimed to investigate potential sex differences in the predictive value of BMI for metabolic abnormality and to calculate the optimal BMI cut-offs for predicting metabolic abnormality for each sex.MethodsParticipants (n = 4,623) who attended a health check-up centre continuously in Eastern China between January 2022 and December 2023 were evaluated for metabolic abnormalities. …”
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533
Division Method and Seepage Law of Seepage Channels in a Tight Reservoir
Published 2021-01-01Get full text
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534
The short-term effects of different cold spell definitions on asthma outpatient visits in Lanzhou, China
Published 2025-03-01Get full text
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535
Identifying Canopy Snow in Subalpine Forests: A Comparative Study of Methods
Published 2025-01-01“…All methods provided insight into the process of interception in a subalpine forest but presented challenges, including differing flux footprints of the above‐ and below‐canopy eddy covariance measurements and the inability of red‐green‐blue imagery to monitor snow interception at night, during sunrise, and during sunset.…”
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536
LiDAR-based edge extraction method for underground belt conveyors
Published 2024-09-01“…Laboratory tests showed that, even when the surface of the belt conveyor had a 100% water distribution and saturated thickness, the edge extraction accuracy was no less than 88%. Overall, this method outperforms the latitude and longitude extremum search method, the curvature threshold method based on KDTree/OcTree, and the adjacent point angle threshold method based on KDTree/OcTree, with an average computation time of only 36 ms, meeting the real-time inspection needs of underground environments.…”
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537
Fiscal Sustainability of Local Governments in the Visegrad Group Countries
Published 2018-09-01“…Objective: The main goal of the article is to assess the level of fiscal sustainability at the local government level in the Visegrad Group (V4) economies. Research Design & Methods: Two different methods of fiscal sustainability measures were used in the article to verify whether the local government deficit is sustainable: estimations of the no-Ponzi conditions, and calculations of the threshold primary balance. …”
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538
Effects of Artificial Cyanobacterial Crust on Soil Wind Erosion Control in Arid Regions
Published 2023-10-01“…[Results] Cyanobacterial crusts of different coverages could be formed under outdoor conditions by inoculating the soil with cyanobacteria liquid having different inoculum amounts. …”
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539
The Role of Lung Ultrasound Scan in Different Heart Failure Scenarios: Current Applications and Lacks of Evidences
Published 2024-12-01“…However, optimizing the utilization of LUS remains a challenge, as standardized imaging protocols and B-line thresholds may vary across different clinical scenarios and HF phenotypes. …”
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540
ROTOR FAULT FEATURE EXTRACTION METHOD USING MVMD AND IEDPE (MT)
Published 2023-01-01“…Compared with MVMD+PE, EMD+IEDPE, and EEMD+IEDPE, the results show that the fault features extracted by the proposed method are more effective in characterizing significant differences between rotor fault states, allowing more accurate recognition of fault categories.…”
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