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1241
Quantitative and qualitative investigation of shunt failure in an in vitro hemorrhagic hydrocephalus model
Published 2025-07-01“…All the barium-impregnated and antibiotic-impregnated catheters reached 30 cmH2O threshold at 0.5% concentration. A statistically significant difference was observed in the pressurization rate (P = 0.029). …”
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1242
Physics-Based Compact Model of Independent Dual-Gate BEOL-Transistors for Reliable Capacitorless Memory
Published 2024-01-01“…The short channel behaviors on sub-threshold swing, mobility and threshold voltage are investigated, and contact effects are validated by the transfer-line method (TLM). …”
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1243
Productivity Formula of Horizontal Well in Low-Permeability Gas Reservoir considering Multiple Factors
Published 2023-01-01“…Then, a new productivity formula is established based on the steady-state seepage theory and the equivalent seepage resistance method, with the consideration of threshold pressure gradient, stress sensitivity, and gas slippage effect. …”
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1244
Risk factors for recurrence of ovarian endometriomas after surgical treatment: retrospective cohort study
Published 2020-12-01“…For IL-8 the threshold value was 128.78 pg/ml, sensitivity 93%, specificity 87.1%, accuracy 88.9%. …”
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1245
Effectiveness of Price Limit on Stock Market Network: A Time-Migrated DCCA Approach
Published 2021-01-01“…The results indicate that the time-migrated DCCA ensures more relevant results than the equal-time DCCA method. An interesting finding is that the price limit has different effects on the stock market network at different stages of dynamic evolution. …”
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1246
Comparing Undecimated Wavelet, Nonsubsampled Contourlet and Shearlet for Sar Images Despeckling
Published 2024-02-01“…Bayesian shrinkage in a transformed domain is a well-known method based on finding threshold value to suppress the speckle noise. …”
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1247
A range spread target detection algorithm based on polarimetric features and SVDD
Published 2023-10-01“…Multi-polarization range high resolution radar is an important mean for ground target detection.In the echo formed by it, the target occupies multiple range cells and becomes an extended target.The traditional spread target detection method relies on energy, and the detection performance decreases when the signal-to-clutter ratio decreases.A spread target detection algorithm based on polarization decomposition features was proposed, which improved the detection performance under low signal-to-clutter ratio by using the difference of polarization scattering characteristics between target and clutter.Specifically, 16 kinds of polarization decomposition features were extracted to form feature vectors as detection statistics, and then support vector data description (SVDD) was used to obtain the detection threshold.When training the detection threshold, the polarization decomposition features of clutter were extracted as training data.In order to ensure the false alarm probability, two penalty parameters were introduced into the objective function of SVDD.The experimental results show that the proposed method requires a signal-to-clutter ratio of about 12.6 dB in the case of Gobi background, false alarm probability of 10<sup>-4</sup> and detection probability of 90%, which is about 1.7 dB lower than the energy-based methods.…”
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1248
Collegiate women’s wrestling body fat percentage and minimum wrestling weight values: time for revisiting minimal body fat percent?
Published 2024-12-01“…The purpose of this study was to provide a descriptive summary of BF% and MWW values of female wrestlers and how MWW values would change with the use of different BF% thresholds.Methods Data from the 2022–2023 collegiate season were retrospectively analyzed resulting in a sample of 1,683 collegiate women wrestlers from the National Association of Intercollegiate Athletics (NAIA, n = 868) and the National Collegiate Athletics Association (NCAA, n = 815). …”
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1249
Factors Associated with Impaired Humoral Immune Response to mRNA Vaccines in Patients with Inflammatory Bowel Disease: A Matched-Cohort Analysis from the RisCoin Study
Published 2025-06-01“…After the third vaccination, NT titers did not reach threshold in 15% anti-TNF compared to 5% vedolizumab/ustekinumab-treated patients and none of HCW (<i>p</i> < 0.01). …”
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1250
Galectin-3 in recipients with kidney graft dysfunction: analysis of predictive significance
Published 2024-09-01“…One of the most pressing issues in contemporary transplantology is the ongoing search for less invasive methods that would identify potential complications that recipients of solid organ transplants may encounter. …”
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1251
Adaptive gradient scaling: integrating Adam and landscape modification for protein structure prediction
Published 2025-07-01“…Despite their success, machine learning methods face fundamental limitations in optimizing complex high-dimensional energy landscapes, which motivates research into new methods to improve the robustness and performance of optimization algorithms. …”
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1252
Comparative analysis of high-resolution UAV photogrammetry and terrestrial laser scanning for detecting and quantifying urban vegetation changes
Published 2025-07-01“…However, the accuracy assessment of data corresponded to a 4 cm difference in both datasets at a 95% confidence threshold and potential vertical height differences accounted for the difference in change detection. …”
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1253
A finite element analysis of the optimal longitudinal screw trajectory for Sanders II and Sanders III calcaneal fractures fixed with percutaneous screws
Published 2025-07-01“…Conversely, in the II B and III AB fracture models, the differences in screw stress among the four fixation methods were minimal. …”
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1254
Validation of stool and blood analysis compared to Inv A and ttr based direct blood qPCR assay as diagnostic tools for typhoid fever
Published 2025-07-01“…While the blood-based ttr and Inv A qPCR technique showed 82% and 80% positivity, respectively, with a Ct threshold value of 37 cycles for both techniques. The stool culture method revealed S. enterica infection in only 32% of cases, while blood culture methods identified S. enterica in 48% of cases. …”
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1255
Parameter estimation of frequency hopping signal based on time-frequency matrix LCM
Published 2021-10-01“…To improve the performance of the parameter estimation of frequency hopping signal under low signal-to-noise ratio, a parameter estimation algorithm of frequency hopping signal based on time-frequency matrix LCM was proposed.Considering the different characteristics of time-frequency distribution of frequency hopping signal and noise, the mean local energy comparison value of the time-frequency matrix under different scale sliding windows was used, and the multi-scale local energy comparison feature matrix was introduced, so the time-frequency matrix P that only contains the time-frequency information of the frequency hopping signal could be obtained through this feature matrix and the adaptive threshold separation.And then, by extracting the time-frequency hopping information from P, the period, hopping time and frequency of the frequency hopping signal could be accurately estimated.The simulation results show that compared with the traditional local contrast measure (LCM) and morphological filtering method, the proposed algorithm has better frequency hopping signal extraction effect and higher parameter estimation accuracy.And then the tests of the algorithm on the DSP+FPGA hardware system verify the effectiveness and practicability.…”
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1256
齿侧间隙对齿轮副非线性振动特性的影响研究
Published 2013-01-01“…The existence of the backlash can generate impact between teeth,which influences the stability of gear transmission.In order to comprehensive research on the influence of backlash on the gear vibration characteristics,the influences of backlash on the gear pair vibration and impact state under different meshing frequency and different loads are studied,through establishing the mathematical model of gear pair nonlinear vibration,and solving the model numerical simulation based on Runge-Kutta method,combined with time process diagram,phase diagram,Poincaré and FFT frequency spectrogram.The research shows that,the dynamics response of meshing frequency towards backlash is the nonlinear relationship,when the meshing frequency is fixed,within a certain range of backlash,gear chaos appears,out of that range,gear chaos does not appears.When the gear load is lighter,backlash is more likely to influence the vibration characteristics of gear pair,however,when the load is heavy,the influence is smaller.With the increase of backlash,the gear impact state transits from bilateral impact to unilateral impact.when it surpass the threshold,the impact of unilateral state will be maintained and unchanged.…”
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1257
In Silico Assessment of the Influence of Talus Osteochondral Lesion Size and Location on Ankle Joint Stability using Tilted Talar Dome Plane Orientations
Published 2024-12-01“…Our study aims to evaluate the stress distribution and joint stiffness effect of OLTs on all the 9-cell partition zones of the talar dome in three different ankle positions during gait. Methods: A simplified ankle geometry of an adult female was computationally modeled with 1 mm of cartilage at both sides of the tibiotalar contact. …”
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1258
In vivo variability of MRI radiomics features in prostate lesions assessed by a test-retest study with repositioning
Published 2025-08-01“…Radiomics feature (RF) extraction was performed from MRI segmentations accounting for intra-rater and inter-rater effects, and three different image normalization methods were compared. …”
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1259
Identifying opioid agonist treatment prescriber networks from health administrative data: A validation study.
Published 2025-01-01“…We defined connections two different ways, by including the number of clients shared or a relative threshold on the percentage of shared OAT clients per physician. …”
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1260
To estimation of contact-fatigue durability of thermo-chemically strengthened gears
Published 2017-10-01“…However, these processes have essentially different mechanisms of contact-fatigue durability with fundamentally different mechanisms of the contact-fatigue life. …”
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