Research on the Influence of PEG to the Nuclei Population Density of Copper Electrocrystallization

2013 ◽  
Vol 652-654 ◽  
pp. 787-790
Author(s):  
Qing Mei Wang ◽  
Feng Yan Sun
Keyword(s):  
Experimental Data ◽  
Population Density ◽  
Least Square Method ◽  
Least Square ◽  
Number Density ◽  
Glass Carbon Electrode ◽  
Sulphate Electrolyte ◽  
Glass Carbon ◽  
Relationship Of ◽  
The Relationship

Influences of the concentration of additive PEG and overpotential on the Nuclei population density of copper electrocrystallization on a glass carbon electrode (GCE) have been studied in this file. We characterized the experimental data extracted from Li’s work [10] with the least square method and exponential curves. The relationship of nucleation number density and overpotential follows the exponential function basically has been obtained by carrying on the data fitting to experimental data. And with a given overpotential, when inject PEG into acidic cupric sulphate electrolyte with a lower concentration, nucleation number density is reduced, but when the injection concentration of PEG is high enough, nucleation number density is increased instead. While with a certain concentration of PEG, as the overpotential more negative, the nuclei population density increased gradually, but if the injection concentration is low, the change of the growth rate of nucleation number density is not significant.

Study on Crystallization Kinetics of Gypsum Prepared by Bittern under 30oC and Different Stirring Speed

2014 ◽  
Vol 962-965 ◽  
pp. 731-735
Author(s):  
Bi Jun Luo ◽  
Dan Wu ◽  
Hai Hong Wu ◽  
Tao Wang ◽  
Xi Ping Huang
Keyword(s):  
Experimental Data ◽  
Crystallization Kinetics ◽  
Calcium Sulfate ◽  
Particle Number ◽  
Particle Number Density ◽  
Crystal Growth Rate ◽  
Number Density ◽  
Relationship Of ◽  
The Relationship ◽  
Kinetics Of

Crystallization kinetics experiment of calcium sulfate dehydrates, which is prepared by bittern under 30oC and different stirring speed conditions, is carried out. According to the results of the experimental data, the relationship of nucleus particle-number density n0 and crystal growth rate G with the residence time, temperature and the stirring speed is summarized. Also, the crystallization kinetics formula under 30oC and different stirring speed is given.

scholarly journals Dampak E-Servive Quality Terhadap E-Satisfaction Serta Implikasinya Pada Online Repurchase B2C Shopee.com

2020 ◽  
Vol 10 (1) ◽  
pp. 109-118
Author(s):  
Raras Ivastya ◽  
Zaenal Fanani
Keyword(s):  
Service Quality ◽  
Least Square Method ◽  
Partial Least Square ◽  
Least Square ◽  
Online Questionnaire ◽  
Online Data ◽  
Partial Least Square Method ◽  
Relationship Of ◽  
The Relationship ◽  
Positive Effect

Internet services that were introduced in 1993 have an impact on behavior change and the ways of consumer decisions making. On the other hand, the emergence of various developments in information technology, connectivity and smartphones are also slowly able to change the way of consumers for meet the needs of a product or service. This research was conducted for intention to examine the effect of e-service quality on e-satisfaction and implications on B2C consumer repurchase online. Data was taken using an online questionnaire and distributed to B2C consumers with the last amount of data collected as many as 312 questionnaires and then be analyzed using the partial least square method. The results of the analysis show that e-service quality provides a significant positive effect on e-satisfaction and online repurchase for B2C consumers. In other results show e-satisfaction has a significant effect on online repurchase and is able to be a partial mediator of the relationship of e-service quality with online repurchase of B2C consumers.

Experimental Study on Calibration Model Based on Pt100 Temperature Sensor

2013 ◽  
Vol 798-799 ◽  
pp. 402-406
Author(s):  
Peng Fei Li ◽  
Cheng Yv ◽  
Yong Ping Yang
Keyword(s):  
Neural Network ◽  
Experimental Data ◽  
Bp Neural Network ◽  
Temperature Sensor ◽  
Least Square Method ◽  
Least Square ◽  
Calibration Model ◽  
Calibration Experiment ◽  
The Relationship ◽  
Lm Algorithm

In order to improve measuring-temperature accuracy of the PT100 temperature sensor, we conduct multi-point calibration experiment. The BP neural network based on LM algorithm can process experimental data and the least square method can fit out more accurate formula that express the relationship between the temperature and resistance. It is available that this arithmetic that the interrelated experiment demonstrate its accuracy improve precision of the PT100 temperature sensor.This arithmetic can be applied to the calibration test.

scholarly journals THE LAST TIME ANALYSIS OF THE FOLLOWING FAMILY IN AL-QUR'AN PERSPECTIVE

2020 ◽  
Vol 2 (2) ◽  
pp. 18-20
Author(s):  
Rona Dwi Rahmah
Keyword(s):  
Natural Disasters ◽  
Correlation Coefficient ◽  
Real Data ◽  
Least Square Method ◽  
Least Square ◽  
Single Word ◽  
Time Analysis ◽  
The Earth ◽  
Relationship Of ◽  
The Relationship

Abstract. Earthquakes are natural disasters caused by shocks on the earth due to faults and the sudden movement of tectonic rocks that make up the earth's crust. This study of earthquakes will be interesting if explored further from the perspective of the Qur'an because in the Qur'an there are many verses that speak of earthquakes. As explained in the Qur'an Al-Zalzalah verses 1-8. On February 14 2016 to February 23 2016 aftershocks occurred in the Klagon Village Area, Saradan District, Madiun. To analyze when the end of aftershocks ends by using the Least Square Method and the relationship of frequency of aftershocks to times that include the Omori, Omogi 1, Omogi 2 and Utsu methods. The conclusion of this study is the Omogi 2 method which has obtained the correlation coefficient r = 0.195 from the correlation value -1 ≤ r ≤ 1, with the aftershocks ending on day 464 and from the comparison of aftershock frequency corresponding to the graph between the results data calculations with real data (actual data) namely the Omogi 2 method. And basically the term earthquake in the Qur'an can still be said not to make the verses interpreted as a single word containing the meaning of the earthquake as a brief explanation of aftershocks in the perspective of the Qur'an.

Numerical Correction High Temperature of Near-Infrared Colorimetry

2011 ◽  
Vol 301-303 ◽  
pp. 1378-1383
Author(s):  
Li Hua Yuan ◽  
Guan Hua Wu ◽  
Ming Li
Keyword(s):  
High Temperature ◽  
Surface Temperature ◽  
Near Infrared ◽  
Least Square Method ◽  
Mathematic Model ◽  
Least Square ◽  
Radiation Pyrometer ◽  
Surface Emissivity ◽  
Relationship Of ◽  
The Relationship

Colorimetry is commonly used to measure the surface temperature as true one when the surface emissivity is constant. That is, the target is regarded as greybody. But in fact, most materials are not greybody. Spectrum emissivity has to do with wavelength and temperature. And in the most case, it is difficult to assure the exact values of the emissivity .This makes the relative error of the temperature big. Therefore, it is necessary to modify the emissivity response of radiation pyrometer. The factor influencing the spectrum was researched through the application of least square method to create the relationship of spectrum emissivity with wavelength and temperature, at last mathematic model was established which provided numerical correction of infrared two-color thermometry.

scholarly journals Potential Functions and Thermodynamic Properties of UC, UN, and UH

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Shuang-Ling Tang ◽  
Yu Wang ◽  
Qi-Ying Xia ◽  
Xue-Hai Ju
Keyword(s):  
Configuration Interaction ◽  
Density Functional ◽  
Least Square Method ◽  
Potential Functions ◽  
Least Square ◽  
Basis Set ◽  
Dissociation Energies ◽  
Anharmonicity Constant ◽  
Different Temperatures ◽  
Relationship Of

Potential energy surface scanning for UC, UN, and UH was performed by configuration interaction (CI), coupled cluster singles and doubles (CCSD) excitation, quadratic configuration interaction (QCISD (T)), and density functional theory PBE1 (DFT-PBE1) methods in coupling with the ECP80MWB_AVQZ + 2f basis set for uranium and 6 − 311 + G∗ for carbon, hydrogen, and nitrogen. The dissociation energies of UC, UN, and UH are 5.7960, 4.5077, and 2.6999 eV at the QCISD (T) levels, respectively. The calculated energy was fitted to the potential functions of Morse, Lennard-Jones, and Rydberg by using the least square method. The anharmonicity constant of UC is 0.0047160. The anharmonic frequency of UC is 780.27 cm−1 which was obtained based on the PBE1 results. For UN, the anharmonicity constant is 0.0049827. The anharmonic frequency is 812.65 cm−1 which was obtained through the PBE1 results. For UH, the anharmonicity constant is 0.017300. The anharmonic frequency obtained via the QCISD (T) results is 1449.8 cm−1. The heat capacity and entropy in different temperatures were calculated using anharmonic frequencies. These properties are in good accordance with the direct DFT-UPBE1 results (for UC and UN) and QCISD (T) results (for UH). The relationship of entropy with temperature was established.

Approximation of the Kinematics of Foot Joints by Using Passive Elastic Characteristics of Joint

2007 ◽  
Vol 342-343 ◽  
pp. 621-624
Author(s):  
Hyeon Ki Choi ◽  
Si Yeol Kim ◽  
Won Hak Cho
Keyword(s):  
Joint Angle ◽  
Reaction Force ◽  
Force Plate ◽  
Least Square Method ◽  
Least Square ◽  
Biomechanical Analysis ◽  
Clinical Evaluations ◽  
Foot Joints ◽  
The Relationship ◽  
Elastic Characteristics

We investigated the relationship between kinematic and kinetic characteristics of foot joints resisting ground reaction force (GRF). Passive elastic characteristics of joint were obtained from the experiment using three cameras and one force plate. The relationship between joint angle and moment was mathematically modeled by using least square method. The calculated ranges of motion were 7o for TM joint, 4o for TT joint and 20o for MP joint. With the model that relates joint angle and plantar pressure, we could get the kinematic data of the joints which are not available from conventional motion analysis. The model can be used not only for biomechanical analysis which simulates gait but also for the clinical evaluations.

Parameters Identification for Nonlinear Duffing System Based on Wavelet Transformation

2013 ◽  
Vol 357-360 ◽  
pp. 1524-1530
Author(s):  
Shi Zhou ◽  
Dong Mei Huang ◽  
Wei Xin Ren ◽  
Qiong Li Wang
Keyword(s):  
Forced Vibration ◽  
Wavelet Transformation ◽  
Recognition Accuracy ◽  
Vibration Signal ◽  
Least Square Method ◽  
Least Square ◽  
Instantaneous Amplitude ◽  
Approximate Analytical Expression ◽  
Duffing System ◽  
The Relationship

Continuous wavelet transformation is made to identify the parameters of damped harmonic forced vibration Duffing system. With the aid of conversion relationship between the scale and frequency, the solution of nonlinear Duffing equation is adopted by average method, which gained approximate analytical expression for instantaneous amplitude and instantaneous frequency of the system. The nonlinear stiffness coefficient and natural frequency can be gained by least square method and the relationship between recognition accuracy and parameter selection are summarized in the article. Parameter identification method of harmonic forced vibration system is proposed in this paper. Studying the wavelet ridge and corresponding scale by segments to filter out the affects of the simple harmonic motion, to extract systems free vibration signal and to achieve the goal of identifying system parameters.

scholarly journals Effect of compensation on employee performance towards motivation as mediation variable

2019 ◽  
Vol 6 (5) ◽  
pp. 134-143
Author(s):  
Intan Candradewi ◽  
I Gst. A. Manuati Dewi
Keyword(s):  
Employee Performance ◽  
Sampling Technique ◽  
Total Sample ◽  
Partial Least Square ◽  
Least Square ◽  
Sample Technique ◽  
Saturated Sample ◽  
Relationship Of ◽  
The Relationship

The purpose of this study was to analyze and explain the role of mediation motivation in the relationship of compensation to employee performance at Wisma Prashanti Hospital. The population in this study were employees of Wisma Prashanti Hospital with a total sample of 83 respondents. The sampling technique is carried out is a saturated sample technique, the entire population is used as a sample. The research instrument used a questionnaire and analysis method using Partial Least Square (PLS) with SmartPLS 3.2 software. The results showed (1) compensation has a positive and significant effect on employee performance (2) compensation has a positive and significant effect on motivation (3) motivation has a positive and significant effect on employee performance (4) motivation mediates partially and positively and significantly on the relationship between compensation and employee performance. The implications of the results of this study indicate that compensation is found to be a major factor in improving employee performance.

scholarly journals A Study on the Relationship between Earnings Quality and Capital Cost-Takes the China Listed Companies as a Sample

2021 ◽  
pp. 48-56
Author(s):  
Chih-Yi Hsiao ◽  
Hui-Hui Kuang ◽  
Hui-Ling Li ◽  
Jia-Li Liu
Keyword(s):  
Earnings Management ◽  
Earnings Quality ◽  
Least Square Method ◽  
Listed Companies ◽  
Capital Cost ◽  
Least Square ◽  
Accounting System ◽  
Ordinary Least Square ◽  
Research Findings ◽  
The Relationship

The phenomenon of false financial statements still exists. However, in addition to the risk of being punished, what kind of price do companies have to pay? In recent decades, with China's rapid progress in economic, the relevant accounting system and corporate governance standards are actively improving, and the earnings quality is improving. This paper takes China's listed companies from 2015 to 2019 as samples, and adopts quantile regression supplemented by ordinary least square method to explore the relationship between earnings quality and capital cost. The research findings show that the higher the earnings management, the higher the capital cost, especially for the company with low capital cost. Nevertheless, for the extremely company with high capital cost, earnings management can reduce the capital cost. The research results can provide the focus of regulators of listed companies and reference for the revision of relevant accounting system.

Sign in / Sign up

Export Citation Format

Share Document