scholarly journals Performance Test of K0-NAA and Relative Method for Analysis of Al, Mg, K Nuclides in SRM Lake Sediment Sample

2017 ◽  
Vol 17 (2) ◽  
pp. 175
Author(s):  
Sunardi Sunardi ◽  
Darsono Darsono
Keyword(s):  
Lake Sediment ◽  
Sediment Sample ◽  
Performance Test ◽  
Test Results ◽  
Z Score ◽  
Analysis Method ◽  
F Test ◽  
Validation Test ◽  
Accuracy And Precision ◽  
Precision Test

A performance test has been conducted of k0-NAA and relative methods for analysis of Al, Mg, K nuclides in SRM lake sediment sample (SRM SL-3). The performance test included validation, accuracy and precision tests, as well as t and F test. This test is done in order to know the performance of the both methods. Test results on validation test of both the k0-NAA and relative methods obtained were still in good performance with z-score values within the range of -2 ≤ x ≤ 2, in the accuracy and precision test showed that the two methods used were still reliable or passed the test for elemental analysis. The results of the evaluation t-test were at 95% confidence level showed that both methods were no significant differences in the test results, and the evaluating the F test showed that there are no differences in the accuracy between the two methods. The performance test data are expected to be used by practitioners and users of neutron activation analysis services as the reference option of analysis method to optimize the objectives to be achieved.

scholarly journals THE VALIDITY OF FNAA AND AAS METHOD FOR ANALYSIS OF Cu AND Fe ELEMENTS IN BIOTA SAMPLES

2010 ◽  
Vol 9 (2) ◽  
pp. 236-242
Author(s):  
Sunardi Sunardi ◽  
Samin Samin ◽  
C. Supriyanto
Keyword(s):  
Limit Of Detection ◽  
T Test ◽  
Test Results ◽  
Z Score ◽  
F Test ◽  
Validity Test ◽  
Validation Test ◽  
Significant Difference ◽  
Aas Method ◽  
Biota Samples

The validity test of Fast Neutron Activation Analysis (FNAA) and Atomic Absorption Spectrometry (AAS) method for analysis of Cu and Fe elements in biota samples has been done. The validity test was represented by the validation test, homogenous test, Z-score test, t test and F test for both methods. The respective validity test results for Cu and Fe elements show that the FNAA precision test were 2.28% and 2.96% while the accuracy were 98.07% and 98.55%, and the precision of AAS validation test results were 1.72% and 2.29% and the accuracy were 98.50% and 98.35%. The uncertainty results for Cu and Fe by FNAA were 2.74% and 3.42%, while AAS were 2.98% and 3.73%. The limit of detection  for both methods of Cu and Fe were 1.05 µg/g and 1.35 µg/g, while AAS were 0.05 µg/g  and 0.904 µg/g, and the value of Z-score in the range ≥-2 and ≤+2 for both methods. In this case the precision, accuracy, uncertainty, limit of detection and value Z-score on both methods  are valid or property to be applied for element analysis. After FNAA and AAS methods were validated then were applied for determining of element contents in biota samples. From the homogenous test result was found that the samples of biota is homogeny, while t test shows that there is no significant difference in average concentration, F test of both methods shows that there is no difference in accuracy.   Keywords: The validity test, FNAA and AAS, Cu and Fe, biota samples

scholarly journals Analisis Pengaruh Kecerdasan Emosional dan Kecerdasan Spiritual Terhadap Kinerja Karyawan Perusahaan Daerah Air Minum Tirta Peusada

2018 ◽  
Vol 10 (2) ◽  
pp. 182
Author(s):  
Syardiansah Syardiansah ◽  
Afriadi Afriadi ◽  
Muhammad Nur Daud
Keyword(s):  
Employee Performance ◽  
Linear Regression Analysis ◽  
Sampling Technique ◽  
Multiple Linear Regression Analysis ◽  
T Test ◽  
Coefficient Of Determination ◽  
Test Results ◽  
Analysis Method ◽  
F Test ◽  
Emotional Quotient

This study aims to determine the effect of emotional Quotient and spiritual Quotient on employee performance at PDAM Tirta Peusada, East Aceh Regency. The number of samples in this study is 65 respondents using non-probability sampling technique that is saturated sampling. Data analysis method used is multiple linear regression analysis, t test, F test, and analysis of the coefficient of determination. The regression equation obtained is K = 2.138 + 0.442X1 + 0.218X2. The results of this study explain that emotional Quotient and spiritual Quotient have a significant effect on employee performance at PDAM Tirta Peusada, East Aceh District, where from the results of the t test, the value of t sig is obtained. emotional Quotient variable is 0.018 <0.05, and spiritual Quotient variable is 0.033 <0.05. Emotional Quotient and spiritual Quotient simultaneously have a significant effect on employee performance at PDAM Tirta Peusada, East Aceh Regency, where the F test results obtained t sig values. 0.011 <0.05. From the analysis of the coefficient of determination, it is known that emotional Quotient and spiritual Quotient affect employee performance at PDAM Tirta Peusada Aceh Timur by 47.2%, while the remaining 52.8% is influenced by other variables outside this research model.

scholarly journals ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI PERILAKU PEMBELIAN IMPULSIF KONSUMEN TOKOPEDIA MENGGUNAKAN ANALISIS DISKRIMINAN (Studi Konsumen Generasi Y dan Z Pada Masa Pandemi COVID-19)

2020 ◽  
Vol 6 (1) ◽  
pp. 23-40
Author(s):  
Meria Christina Noviolita ◽  
Puji Isyanto ◽  
Asep Darojatul Romli
Keyword(s):  
Consumer Behaviour ◽  
Influence Factor ◽  
Research Topic ◽  
Primary Data ◽  
Z Score ◽  
Analysis Method ◽  
Study Program ◽  
Discriminant Model ◽  
Validation Test ◽  
Impulsive Buying

Abstrak Tujuan penelitian ini untuk (1) mengetahui perbedaan antara dua kategori konsumen dalam melakukan pembelian impulsif di Tokopedia; (2) mencari faktor - faktor apa saja yang mempengaruhi dua kategori tersebut; (3) memperoleh model diskriminan dua faktor yang terbentuk; (4) mengetahui ketepatan hasil mengklasifikasi kasus dari model diskriminan tersebut. Manfaat penelitian ini diharapkan dapat menjadi dasar untuk penelitian berikutnya, serta menambah wawasan baru bagi program studi manajemen pemasaran. Penelitian dilakukan dengan menggunakan metode deskriptif asosiatif hubungan kausal dengan metode analisis diskriminan, serta mempelajari literatur yang berkaitan dengan topik penelitian, dan penyebaran angket sebagai data primer. Berdasarkan hasil analisis, maka diperoleh dua variabel yang layak dianalisis, yaitu jenis kelamin dan pendapatan konsumen. Model diskriminan dua faktor yang terbentuk adalah Zscore = -13,737 + 1,911 (jenis_kelamin) + 0,875 (pendapatan). Pengujian validasi diperoleh angka ketepatan yaitu 59%, maka fungsi diskriminan tersebut dapat digunakan untuk memprediksi kasus kategori konsumen Tokopedia. Kata Kunci : Perilaku Konsumen, Faktor Pengaruh, Pembelian Impulsif.     Absract The purpose of this study was to (1) find out the differences between the two categories of consumers making impulsive purchases on Tokopedia; (2) looking for the factors that affect the two categories; (3) obtain a two-factor discriminant model that is formed; (4) knowing the accuracy of the results of classifying cases from the discriminant model. The benefits of this research are expected to be the basis for further research, as well as add new insights to the marketing management study program. The research was conducted using the descriptive associative causal relationship with the discriminant analysis method, as well as studying the literature related to the research topic, and distributing questionnaires as primary data. Based on the results of the analysis, there are two variables that are worth analyzing, namely gender and consumer income. The two-factor discriminant model that is formed is Z score = -13,737 + 1,911 (gender) + 0.875 (income). In the validation test obtained the accuracy number is 59%, then the discriminant function can be used to predict cases of the Tokopedia consumer category. Keywords : Consumer Behaviour, Influence Factor, Impulsive Buying

scholarly journals Site Performance Testing of CW251B10 Gas Turbines

1989 ◽  
Author(s):  
Ihor S. Diakunchak ◽  
David R. Nevin
Keyword(s):  
Gas Turbines ◽  
Performance Test ◽  
Test Procedure ◽  
Engine Performance ◽  
Performance Testing ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Test Results ◽  
Analysis Method ◽  
Industrial Gas Turbine

The site performance testing of CW251B10 industrial gas turbine engines is described in this paper. A brief description is provided of the test procedure, the special instrumentation used during the test, and the derivation of the test tolerances. The test data analysis method and the associated correction curves and tables are described in some detail. Typical engine site performance test results are presented and compared to the original predicted engine performance.

scholarly journals Test and Modelling of Commercial V2G CHAdeMO Chargers to Assess the Suitability for Grid Services

2019 ◽  
Vol 10 (2) ◽  
pp. 21 ◽  
Author(s):  
Antonio Zecchino ◽  
Andreas Thingvad ◽  
Peter Bach Andersen ◽  
Mattia Marinelli
Keyword(s):  
Operating Conditions ◽  
Test Results ◽  
Vehicle To Grid ◽  
Accuracy And Precision ◽  
Regulation Services ◽  
Real Hardware ◽  
Time Accuracy ◽  
And Control ◽  
Precision Test ◽  
Good Calibration

Aggregation and control of electric vehicles (EVs) via vehicle-to-grid (V2G) technologies is seen as a valid option for providing ancillary power system services. This work presents results from V2G-ready equipment tests and modelling. The technical capabilities of an EV connected to a commercial V2G charger are investigated when controlled either locally or remotely. The charger is characterized in terms of efficiency characteristics, activation time, response granularity, ramping-up/down time, accuracy and precision. Test results show the performance for different operating conditions, highlighting the importance of a good calibration and knowledge of the employed hardware when providing standard-compliant grid regulation services via V2G technology. Ultimately, a set of simulations demonstrates that the designed EV charger model replicates accurately the operating conditions of the real hardware.

PENGARUH CITRA MEREK DAN KUALITAS PRODUK TERHADAP KEPUTUSAN PEMBELIAN MOBIL MITSUBISHI PADA PT. KRAMA YUDHA MOTORS AND MANFACTURING

2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Nuridin, SE., MM. ◽  
Dwi Ardika Prayudha
Keyword(s):  
Product Quality ◽  
Brand Image ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Coefficient Of Determination ◽  
Purchase Decision ◽  
Test Results ◽  
Analysis Method ◽  
Validity And Reliability ◽  
Image Variables

This research is aimed to examine the influence of brand image and product quality to car purchase decision at PT. Mitsubishi Krama Yudha Motors and Manufacturing. Data analysis method was used, is quantitative analysis, by using validity and reliability test, coefficient of determination, and multiple linear regression analysis. Result of regression equation is: Y = 0,665 + 0,517 X1 + 0,416 X2 Simultaneously testing of brand image variables and product quality to purchase decision, shown by F count equal to 85,955 bigger than F table 3,159 or with sig. F 0.000 is smaller than alpha 0.005. Based on the test results simultaneously, can be seen that the independent variables (brand image and product quality) have a positive and significant impact on the car purchase decision at Mitsubishi cars At PT. Krama Yudha Motors and Manufacturing. Suggestions which can be given for future developments and determinations of policy are, companies should pay attention to brand image, product quality, to make customers more satisfied and keep using Mitsubishi cars as their choice.

PENGARUH MODEL PEMBELAJARAN KELILING KELOMPOK (ROUND CLUB) TERHADAP KETERAMPILAN MENULIS LAPORAN PERJALANAN SISWA KELAS V SDN 01 NAGARI BUKIK SIKUMPA

2020 ◽  
Author(s):  
Wirda Linda
Keyword(s):  
Standard Deviation ◽  
Performance Test ◽  
Writing Skills ◽  
Learning Model ◽  
Homogeneity Test ◽  
Test Results ◽  
Class V ◽  
Average Value ◽  
Normality Test ◽  
Lecture Method

This research is motivated by the low desire of students in writing travel reports. The lack of students' knowledge of the report concept, the lack of students' knowledge of the 5W + 1H report points of good and correct language, the lack of students' knowledge of the spatial, time and topic pattern and not yet reached KKM 75. The method used by the teacher has not been interesting, lecture method. The purpose of this study is to describe the skills of writing travel reports by using Round Club learning model which is viewed from the aspect of understanding the report concept, the use of 5W +1H report points, the spatial, time, and topic pattern.The population of this study is the students of class V Lessons Year 2017/2018 which amounted to 2 classes with the number 80. The sample of research as much as two classes taken by the sample of propotional.Class V.1 as experimental class and class V.2 as control class. The research instrument used is performance test. Provide an assessment by specifying the subject of the 5W + 1H report, as well as the spatial, time and topic pattern. Data were analyzed by 't' test by first testing normality, homogeneity, and hypothesis testing.The results showed that the average control class 68 with more than enough qualifications with standard deviation 16.96. 83 experimental class with good qualification and standard deviation of 15.42 and there is a significant influence on the result of writing skill of class V SDN 01 Nagari Bukik SikumpaSubdistrict, Lima Puluh Kota. This is evidenced by the average value of writing skills in the experiment class higher than the average value in the control class. Normality test results indicate that the two sample classes of  Lo  values in the control class -0.2141 are smaller than the normal 0.190 Lt distributed. Homogeneity test results that the variation of this study is homogeneous at a real level of 0.05, because Ftable 2.16 > Fhitung 1.21 and the results of data analysis then obtained = 2.78 > 1.70 t table, so H0 rejected and H1 accepted. It can be concluded that there is Influence. Using  Learning  Model of Student Group Writing  Skills Travel Report of students of class V SDN 01 Nagari Bukik Sikumpa Subdistrict, Kabupaten Lima Puluh Kota.KeyWords: model pembelajaran round club, menulis laporan perjalanan.

Physical and performance characteristics related to starter status, position, and division in Japanese collegiate American-football players

2021 ◽  
pp. 1-8
Author(s):  
Junta Iguchi ◽  
Minoru Matsunami ◽  
Tatsuya Hojo ◽  
Yoshihiko Fujisawa ◽  
Kenji Kuzuhara ◽  
...  
Keyword(s):  
Performance Test ◽  
Vertical Jump ◽  
American Football ◽  
Football Players ◽  
Jump Height ◽  
Test Results ◽  
Repetition Maximum ◽  
Vertical Jump Height ◽  
Division 1 ◽  
And Performance

BACKGROUND: Few studies have investigated the variations in body composition and performance in Japanese collegiate American-football players. OBJECTIVE: To clarify what characterizes competitors at the highest levels – in the top division or on the starting lineup – we compared players’ body compositions and performance test results. METHODS: This study included 172 players. Each player’s body composition and performance (one-repetition maximum bench press, one-repetition maximum back squat, and vertical jump height) were measured; power was estimated from vertical jump height and body weight. Players were compared according to status (starter vs. non-starter), position (skill vs. linemen), and division (1 vs. 2). Regression analysis was performed to determine characteristics for being a starter. RESULTS: Players in higher divisions and who were starters were stronger and had more power, greater body size, and better performance test results. Players in skill positions were relatively stronger than those in linemen positions. Vertical jump height was a significant predictor of being a starter in Division 1. CONCLUSION: Power and vertical jump may be a deciding factor for playing as a starter or in a higher division.

Experiment and Optimization of High-Efficiency Mechanical Separation of Peanut Seedlings and Residual Film Based on Suspension Velocity

2021 ◽  
Vol 64 (4) ◽  
pp. 1381-1389
Author(s):  
Fengwei Gu ◽  
Meng Yang ◽  
Zhichao Hu ◽  
Yanhua Zhang ◽  
Chong Zhang ◽  
...  
Keyword(s):  
Moisture Content ◽  
Rotational Speed ◽  
Loss Rate ◽  
Removal Rate ◽  
Performance Tests ◽  
Test Results ◽  
Material Loss ◽  
Validation Test ◽  
Residual Film ◽  
Forage Utilization

HighlightsAn efficient method for separating peanut seedlings and residual film harvested from film-mulched peanut was proposed, and the mechanism was optimized.The relationships between the suspension velocity and moisture content of different shredded materials were studied.Four-factor, three-level Box-Behnken experiments were carried out and analyzed, and the optimal parameter combination was determined.A validation test was carried out to verify the rationality and accuracy of the optimized regression model.Abstract. To address the problems of lower residual film removal and higher material loss in the forage utilization of peanut seedlings wrapped in residual film, this study explored the relationships between the suspension velocity and moisture content of different shredded materials derived from peanut seedlings and conducted performance tests and parameter optimization for a machine that uses peanut seedlings as forage material. Four-factor, three-level Box-Behnken experiments were designed using the rotational speeds of the shredding shaft, upper fans, and lower fans and the frequency of the vibrating sieve as test factors, and using the residual film removal rate and material loss rate as response values. The test results indicated that the suspension velocity of the shredded materials showed a quadratic relationship with moisture content. The performance tests showed that the significance sequence of the test factors for the residual film removal rate was: rotational speed of the lower fans, rotational speed of the upper fans, rotational speed of the shredding shaft, and frequency of the vibrating sieve. The significance sequence for the material loss rate was: rotational speed of the lower fans, rotational speed of the shredding shaft, frequency of the vibrating sieve, and rotational speed of the upper fans. The parameter optimization and validation test showed that the residual film removal rate was 92.71% and the material loss rate was 8.19% when the rotational speeds of the shredding shaft, upper fans, and lower fans were 1650, 770, and 665 rpm, respectively, and the frequency of the vibrating sieve was 4 Hz. The relative errors between the validation test results and the predicted values from the regression models were less than 3%, which suggests that the regression models are reliable. This study provides a reference for the forage utilization of peanut seedlings harvested from film-mulched peanut and provides a reference for determining the optimal working parameters of forage processing machines. Keywords: Agricultural machinery, Box-Behnken experiment, Optimization, Peanut film-seedling separation, Suspension velocity.

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