Establishment of the special curve of rebound strength detection for C55 concrete based on method of least square

2011 ◽  
Author(s):  
Haosu Liu ◽  
Jun Dong
Keyword(s):  
Least Square ◽  
Method Of Least Square ◽  
Special Curve

Application of High-Linearity Analog Optocoupler in DSP Acquisition Circuit

2012 ◽  
Vol 232 ◽  
pp. 944-948 ◽  
Author(s):  
Ying Qi Tan ◽  
Xiang Yang Liu ◽  
Bao Qing Den
Keyword(s):  
High Accuracy ◽  
Least Square ◽  
Experiment Data ◽  
Good Linearity ◽  
High Linearity ◽  
Analog Signals ◽  
Noisy Signals ◽  
Method Of Least Square ◽  
Proper Design ◽  
Hardware Circuit

An applied hardware circuit for detecting the AGC signals isolated with DSP is designed based on a high-linearity analog optocoupler. The problem of narrow measuring scope, low linearity and instability which caused by noisy signals is resolved when collects industrial analog signals into DSP. The practical circuit with proper design of components is designed through repeated experiments. The experiment data are analyzed by the method of least-square. The analyzed results show this circuit has the high accuracy and good linearity.

scholarly journals Normal tissue tolerance dose for cervical radiotherapy to the NTCP model using a method of least square fit

2020 ◽  
Vol 12 (1) ◽  
pp. 215-220
Author(s):  
E. Onuh ◽  
A.S. Ajuji ◽  
N. Rabiu ◽  
M.S. Anas ◽  
M. Jada
Keyword(s):  
Normal Tissue ◽  
Normal Tissue Complication Probability ◽  
Least Square ◽  
Planning System ◽  
Radiotherapy Planning ◽  
Treatment Planning System ◽  
Normal Tissue Tolerance ◽  
Tolerance Dose ◽  
Method Of Least Square ◽  
Least Square Fit

The purpose of this study is to evaluate the impact of Normal Tissue Complication Probability (NTCP) models on radiation treatment plans. We estimated NTCP parameters for the organs at risk (OARs) for cervical cancer radiotherapy. We pooled individual patient data from fifty patients who were treated with External Beam Radiotherapy technique between March 2012 and November 2013 in a part of Northern Nigeria with the exclusion of patients who had other gynaecological malignancies. Three basic methods were followed during the radiotherapy planning of these patients which included the pre-planning stage, planning radiotherapy treatment stage and treatment delivery. Various tests were carried out on these patients which helped to confirm the diagnosis after which they were treated using the linear accelerator, computed tomography simulator and the treatment planning system. We calculated the normal tissue tolerance doses for partial volumes of the organs using the values of the above –said parameters for published data on normal tissue tolerance doses. This article shows a graphical representation of the computed NTCP for left femur, right femur and skin presented and a fairly good correspondence is found between the curves for head of femurs and skin. Keywords: Normal Tissue Tolerance Dose, Normal Tissue Complication Probability, Method of Least Square Fit, Cervical Radiotherapy

Strength Reduction Technique for Non-Linear Failure Criterion

2012 ◽  
Vol 446-449 ◽  
pp. 1568-1572
Author(s):  
Li Ren ◽  
Ting Ai ◽  
Zhe Ming Zhu ◽  
Ling Zhi Xie ◽  
Ru Zhang
Keyword(s):  
Power Function ◽  
Shear Failure ◽  
Least Square ◽  
Failure Envelope ◽  
Collocation Points ◽  
Strength Reduction Technique ◽  
Non Linear ◽  
Linear Shear ◽  
Method Of Least Square ◽  
As Stress

In the analysis of slope stability, a reduction method of non-linear shear strength was applied. A power function was used to approximate the shear failure envelope which is determined by the non-linear criterion or experimental data, and then the coefficients of that function were determined by using the collocation points. The equivalent friction angles and cohesive strengths of rock as well as stress range were determined by fitting an average linear relationship to the approximate curve generated by the power function through the method of least square. Finally, an example was presented to demonstrate the superiority and feasibility of the method introduced in this paper.

A Recursive Gradient Method of Least Square Support Vector Machine and its Application

2013 ◽  
Vol 339 ◽  
pp. 349-354
Author(s):  
Xiang Yong Luo ◽  
Wei Min Lv ◽  
Zhao Qing Song ◽  
Shi Wei Jiang
Keyword(s):  
Support Vector Machine ◽  
Parameter Estimation ◽  
Gradient Method ◽  
Least Square ◽  
Support Vector ◽  
Recursive Method ◽  
Online Identification ◽  
Method Of Least Square ◽  
Bad Data

Least Square Support Vector Machine (LS-SVM) is an important machine of Support Vector Machine (SVM). But this method can not be used for online identification, and maybe lead to calculation inflation. A gradient recursive method of LS-SVM is presented by combining the LS-SVM method with the gradient method. This method can overcome the influence of bad data to the parameter estimation, has a stronger robustness, and improves the calculation speed of LS-SVM. The presented method is applied to the modeling of chaotic series. The simulation example validates the validity of the presented method.

An Improved Device of Detecting True and False Coin

2012 ◽  
Vol 503-504 ◽  
pp. 1589-1592
Author(s):  
Chun He Yu ◽  
Xiao Feng Tian ◽  
Dan Ping Zhang
Keyword(s):  
Low Frequency ◽  
Detection Algorithm ◽  
Least Square ◽  
External Control ◽  
Testing Technology ◽  
Method Of Least Square ◽  
Processing Module ◽  
Distinct Frequency ◽  
Control Circuits ◽  
Signal Processing Module

In order to reduce the loss of an automatic coin machine for using a 1-Yuan false coin, an improved device is designed by applying the eddy current nondestructive testing technology, which uses two distinct frequency signals to detect the information of coin. The device includes four modules: two LC oscillating circuits, signal processing module, microprocessor module and external control circuits. The detection algorithm selects two counting values under two distinct frequency signals. The low frequency circuit detects the information of the coin material, and the high frequency circuit detects the feature of the coin surface. The detection region of true coin is decided by the method of least square. The experiment shows that the device has the characters of stability, reliability and high accuracy.

Study on the Configuration Effect of a Vortex Finder for a Gas-Solid Cyclone Separator Using Eulerian-Eulerian Approach

2013 ◽  
Author(s):  
Moonho Choi ◽  
Sungwon Lee ◽  
Jin-Ki Ham
Keyword(s):  
Pressure Loss ◽  
Erosion Rate ◽  
Separation Efficiency ◽  
Solid Particles ◽  
Least Square ◽  
Design Parameters ◽  
Reduced Pressure ◽  
Eulerian Approach ◽  
Method Of Least Square ◽  
Vortex Finder

Granular model, a part of Eulerian-Eulerian approach is implemented to improve a gas-solid cyclone separator’s performances which are largely determined by dimensions of a vortex finder. Design-Of-Experiments method analyzes the performances such as pressure loss, separation efficiency, and erosion rate of each variation model due to the change of design parameters of the vortex finder. Separation efficiencies due to the motion of solid particles are predicted according to the classical efficiency model by using the method of least square. The numerical results are validated by comparing with previously reported experimental data. The standard Stairmand design cyclone is improved judging from the reduced pressure loss by 43%, the reduced cut size by 63% and the reduced erosion rate by 2% by changing the position and the diameter of the vortex finder.

Synthesis of linearly polarised patterns of conical arrays by the method of least square

2015 ◽  
Vol 9 (2) ◽  
pp. 185-191 ◽  
Author(s):  
Homayoon Orazi ◽  
Hadi Soleimani ◽  
Reza Azadkhah
Keyword(s):  
Least Square ◽  
Method Of Least Square

scholarly journals ANALISIS PERMALAN (FORECAST) PENJUALAN SEPEDA MOTOR HONDA PADA DEALER CAHAYA MOTOR INDAH MUARA TEMBESI

2018 ◽  
Vol 2 (1) ◽  
pp. 57
Author(s):  
Jasasila Jasasila
Keyword(s):  
Volume Growth ◽  
Secondary Data ◽  
Least Square ◽  
Primary Data ◽  
Sales Volume ◽  
Sales Growth ◽  
Literature Study ◽  
Collection Method ◽  
Method Of Least Square ◽  
The Right

This study was conducted to determine the forecasting of Honda motorcycle sales at the Dealer Cahaya Motor Indah Muara Tembesi. The purpose of this study are: a) To know the development of Honda motorcycle sales at the Dealer Cahaya Motor Indah Muara Tembesi b) to know the forecasting of Honda motorcycle sales at the Dealer of Cahaya Motor Indah Muara Tembesi and c) To know the correct the right methode  forecasting used Dealer Cahaya Indah Motor Muara Tembesi. The type of data used in this study is, primary data and secondary data with data sources obtained directly from Dealer Cahaya Indah Motor Muara Tembesi namely motorcycle sales data. Data collection method is done through literature study, From the data obtained and the analysis of the development of Honda motorcycle sales at dealer Cahaya Motor Indah Muara Tembesi within a period of four years ie 2012 to 2016 experiencing the fluctuating sales growth seen in 2013 there was a decline sales of 55.58%, for the year 2014 again a decline in sales from the previous year amounted to 11.76%, while in 2015 there was an increase of 26.59%, but in 2016 again sales decline by 24.57% from the previous year . The decrease of sales growth at Cahaya Motor Indah dealership is one of them caused by unstable community income, in general the source of income from the plantation sector (palm and rubber) which during the year of analysis also fluctuate in price, so it has influence on the demand of bicycle motorcycle. From the average sales volume growth of 1,025 units, then through the rationalization analysis peralaman is known forst sales volume in 2017 is 913 units, while the right method to be used by the Dealer Cahaya Motor Indah Muara Tembesi in forecasting is the method of Least Square and Moment Trend Method.Keywords: Method; Forecast; Sales

scholarly journals Theory of error and least square adjustment: Application in coordinate transformation

2009 ◽  
pp. 41-46
Author(s):  
Madhusudan Adhikari
Keyword(s):  
Coordinate Transformation ◽  
Conformal Transformation ◽  
Systematic Errors ◽  
Least Square ◽  
Random Errors ◽  
Method Of Least Square

After detection and elimination of blunders, determination and correction of systematic errors the remaining random errors are adjusted by the method of least square. It is very useful technique in survey adjustments; as an example of its application, adjustment of conformal transformation of coordinate has been presented in this paper.

Sign in / Sign up

Export Citation Format

Share Document