A GRAPHICAL APPROACH TO LOCATING THE CONTROL
      POINT OF SHEAR AND FLEXURE OVER THE SPAN OF
      THE POST-TENSIONED BEAM: STATISTICAL CURVE FITTING
      ON THE FUNCTIONS OF THE SHEAR SPAN

S. KUMAR; S. RAJENDRA;  ;

doi:10.26634/jste.7.4.14920

A GRAPHICAL APPROACH TO LOCATING THE CONTROL POINT OF SHEAR AND FLEXURE OVER THE SPAN OF THE POST-TENSIONED BEAM: STATISTICAL CURVE FITTING ON THE FUNCTIONS OF THE SHEAR SPAN

i-manager’s Journal on Structural Engineering ◽

10.26634/jste.7.4.14920 ◽

2019 ◽

Vol 7 (4) ◽

pp. 29

Author(s):

S. KUMAR ◽

S. RAJENDRA ◽

◽

Keyword(s):

Curve Fitting ◽

Control Point ◽

Graphical Approach ◽

Shear Span ◽

Post Tensioned

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Shear Behavior of Large-Scale Post-Tensioned Girders with Small Shear Span-Depth Ratio

ACI Structural Journal ◽

10.14359/51663529 ◽

2010 ◽

Vol 107 (02) ◽

Keyword(s):

Large Scale ◽

Shear Behavior ◽

Shear Span ◽

Depth Ratio ◽

Small Shear ◽

Post Tensioned

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Research on the high-accuracy mileage statistics method based on the civil satellite data

International Journal of Distributed Sensor Networks ◽

10.1177/1550147719852029 ◽

2019 ◽

Vol 15 (5) ◽

pp. 155014771985202

Author(s):

Zunmin Liu ◽

Chuijie Yi ◽

Zhihong Liu ◽

Xilong Zhang

Keyword(s):

Curve Fitting ◽

Control Point ◽

Large Error ◽

Trajectory Data ◽

The Road ◽

Satellite Positioning ◽

Shape Approximation ◽

Fitting Method ◽

Point Data ◽

Curve Fitting Method

For the current situation of the large error in civil satellite positioning data resulting in the calculation of smaller mileage by the polyline method than the actual mileage, a new method of mileage statistics has been proposed in this article. First, the original trajectory data are preprocessed to eliminate data errors. Second, based on the principle of shape approximation, it is preferred to implement the quadratic B-spline curve to accurately fit the mileage trajectory curve, comparing various curve fitting methods. Then, based on the trajectory curve control point data, the mileage statistics formula is derived, and the accurate mileage statistics method for non-precision satellite positioning signals is realized. Finally, the road test is carried out by using the photoelectric non-contact five-wheel instrument and GPS equipment. The polyline method and curve fitting method are used to generate contrastive curve and calculate the mileage, respectively. Taking photoelectric five-wheel data as the accurate mileage, the error analysis is carried out. The results show that the deviation between calculated and actual mileage values is less than 1%. Therefore, this method can meet the user’s requirements for fleet management.

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Single-step simple ROC curve fitting via PCA.

Canadian Journal of Experimental Psychology/Revue canadienne de psychologie expérimentale ◽

10.1037/cep0000095 ◽

2016 ◽

Vol 70 (4) ◽

pp. 301-305

Author(s):

John R. Vokey

Keyword(s):

Curve Fitting ◽

Roc Curve ◽

Single Step

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Estimating ink mileage of dry toners in electrophotography

TAPPI Journal ◽

10.32964/tj12.3.9 ◽

2013 ◽

Vol 12 (3) ◽

pp. 9-14

Author(s):

RENMEI XU ◽

CELESTE M. CALKINS

Keyword(s):

Experimental Data ◽

Curve Fitting ◽

Graphite Furnace ◽

Atomic Absorption Spectrometer ◽

Density Region ◽

Coated Papers ◽

Graphite Furnace Atomic Absorption ◽

S Model ◽

Better Than ◽

Film Weight

This work investigates the ink mileage of dry toners in electrophotography (EP). Four different substrates were printed on a dry-toner color production Xerox iGen3 EP press. The print layout contained patches with different cyan, magenta, yellow, and black tonal values from 10% to 100%. Toner amounts on cyan patches were measured using an analytical method. Printed patches and unprinted paper samples, as well as dry toners, were dissolved in concentrated nitric acid. The copper concentrations in the dissolved solutions were analyzed by a Zeeman graphite furnace atomic absorption spectrometer. Analytical results were calculated to determine the toner amounts on paper for different tonal values. Their corresponding reflection densities were also measured. All data were plotted with OriginPro® 8 software, and four mathematical models were used for curve fitting. It was found that the C-S model fitted the experimental data of the two uncoated papers better than the other three models. None of the four models fitted the experimental data of the two coated papers, while the linear model was found to fit the data well. Linear fitting was the best in the practical density region for the two coated papers. Ink mileage curves obtained from curve fitting were used to estimate how much ink was required to achieve a target density for each paper; hence, the ink mileage was calculated. The highest ink mileage was 3.39 times the lowest ink mileage. The rougher the paper surface, the higher the requirement for ink film weight, and the lower ink mileage. No correlation was found between ink mileage and paper porosity.

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