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481
The Problem of Grade Inflation: Measurement and Analysis
Published 2024-10-01“…Statistical and econometric methods are used for quantitative analysis. The authors propose course ranking based on the degree of grade distribution shift that can be interpreted as a relative measure of grade inflation that is similar to Pearson asymmetry coefficient. …”
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482
Quantitative comparison between single-photon emission computed tomography and positron emission tomography imaging of lung ventilation with 99mTc-technegas and 68Ga-gallgas in pat...
Published 2019-07-01“…Quantitative measurements revealed different tracer distribution in both techniques. …”
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483
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484
Machine Learning and Statistical Analyses of Sensor Data Reveal Variability Between Repeated Trials in Parkinson’s Disease Mobility Assessments
Published 2024-12-01“…Although the total duration remains relatively consistent between trials (intraclass correlation coefficient (ICC) = 0.62 to 0.95), greater variability is seen in subtask duration and sensor-derived measures, reflected in machine learning performance and statistical differences. …”
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485
Numerical simulation of unsteady airflow organization and cold island effect in air source heat pump unit
Published 2025-10-01“…The research findings of this study provide a basis for the quantitative engineering analysis of performance degradation in single-unit air-source heat pump systems caused by the cold island effect. …”
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486
Dynamic heat transfer mechanisms of internal thermal mass: Effects of thermal conductivity and diffusivity under varied temperature conditions
Published 2025-01-01“…These findings provide a quantitative basis for estimating the impact of internal thermal mass on indoor air temperature and heat exchange in the early stages of building design.…”
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487
Complementary Characteristics Between Hydro-Solar-Wind Power Factors in the Upper Yellow River Region During 1979~2018
Published 2025-03-01“…The complementarity of these power factors is analyzed across multiple time scales and resolutions. A complementarity coefficient is introduced by integrating three correlation coefficients to evaluate the interrelationship between pairs of power factors. …”
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488
Assessing crop water deficiency for regional adaptation to climate change
Published 2025-06-01Get full text
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489
Theoretical analysis and validation of the load-bearing capacity of soft rock foundations for the fifth yangtze river bridge
Published 2025-09-01“…This model proposes new quantitative parameters to determine the failure limit state of soft rock foundations. …”
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490
Analysis on the co-expression of hydrophobin Fv-Hyd1 and its potential transcription factor Fv-Rtg3 in Flammulina velutipes
Published 2016-05-01“…Combined with the real-time fluorescent quantitative PCR and the Pearson correlation coefficient, the results showed that there was a strong co-expression rule between Fv-Hyd1 and its potential transcription factor Fv-Rtg3 with a high expression in F. velutipes mycelium knot and fruiting body primordium formation. …”
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491
Development of a one-step multiplex RT-qPCR method for rapid detection of bovine diarrhea viruses
Published 2025-01-01“…Furthermore, the assay exhibited excellent reproducibility, with coefficients of variation below 1.5%, a strong linear correlation (R2 > 0.996), and an amplification efficiency between 90% and 110%. …”
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492
Evaluation of functional magnetic resonance APT and DKI imaging for breast cancer
Published 2024-12-01“…The APT signal intensity (SI), apparent kurtosis coefficient (Kapp), non-Gaussian diffusion coefficient (Dapp), and apparent diffusion coefficient (ADC) values were measured before surgery. …”
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493
Assessing the deep learning based image quality enhancements for the BGO based GE omni legend PET/CT
Published 2024-10-01“…It investigates the impact on imaging performance of various deep learning precision levels (low, medium, high) across different data acquisition durations. Quantitative analysis was performed using metrics such as contrast recovery coefficient (CRC), background variability (BV), and contrast to noise Ratio (CNR). …”
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494
Analysis of runs of homozygosity in Yeonsan Ogye chickens using 600K single nucleotide polymorphism arrays
Published 2025-05-01“…The average inbreeding coefficient (FROH) calculated based on ROHs was 0.184 and this was correlated with other inbreeding coefficients estimated using allele frequencies. 17 ROH islands were detected and these regions exceeded the threshold of the top 1% of SNPs among SNPs present in ROHs. …”
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495
Predicting the critical drainage induced by soil seepage failure during pumping in foundation pit construction
Published 2025-01-01“…Therefore, compared to existing qualitative experience-based methods for predicting critical drawdown volumes in basement excavation, the quantitative calculation method holds greater practical application value.…”
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496
One-step and two-step qPCR assays for CAPRV2023: development and application in full-cycle epidemiological surveillance of golden pompano
Published 2025-07-01“…The intra- and inter-assay coefficients of variation (CVs) ranged from 0.23 to 0.95% and 0.28 to 1.95%, respectively. …”
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497
Apportioning and Locating PM2.5 Sources Affecting Coastal Cities: Ulsan in South Korea and Dalian in China
Published 2024-05-01“…Squared correlation coefficients (r 2) of sources common to the two cities were examined for lag times from –2 days to +4 days from Dalian to Ulsan. …”
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498
Uneven Distribution and Variation Patterns of Annual Precipitation in Guangzhou from 1980 to 2021
Published 2025-01-01“…This study focuses on Guangzhou, utilizing daily data from 19 precipitation stations in the city from 1980 to 2021, along with Lorenz curves. The Gini coefficient is employed to quantitatively describe the uneven distribution of precipitation within the year, while the Mann-Kendall trend test is applied to examine the spatiotemporal changes in annual precipitation and the uneven distribution of precipitation within the year in Guangzhou. …”
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499
The shielding effect of SH wave propagation in porous unidirectional infinite enclosed structure
Published 2025-06-01“…This approach enables quantitative and qualitative analysis of coupled wave amplitude distribution, shielded frequency bands, and shielding coefficients under variations in frequency bands, pore numbers, inter-pore spacing, and structural dimensions. …”
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500
Eccentric indices based QSPR evaluation of drugs for schizophrenia treatment
Published 2025-01-01“…The p-values show the significance of the results, while the correlation coefficient values show the accuracy of the results. …”
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