scholarly journals Stratification in the adjustment of hypsometric relationship models in forest fragment

2019 ◽  
Vol 12 (6) ◽  
pp. 52
Author(s):  
F. R. C. B. Baptista ◽  
D. H. S. Ataíde ◽  
P. V. Rocha ◽  
L. C. Silva ◽  
E. J. G. Araújo ◽  
...  
Keyword(s):  
Standard Error ◽  
Graphical Analysis ◽  
T Test ◽  
Coefficient Of Determination ◽  
Ecological Group ◽  
Forest Fragment ◽  
Regression Parameters ◽  
Relationship Model ◽  
Identity Test ◽  
Group Species

The objective of this study was to find a hypsometric relationship model capable of estimating the height of trees in unequal forest fragment, testing the efficiency of stratification by species, ecological group and diametric class. In the unequal forest fragment (2.2 ha) belonging to the Federal Rural University of Rio de Janeiro, Seropédica / RJ, a census was carried out, botanical identification of trees with a diameter ≥ 5 cm, being this variable measured, as well as their respective height total. The data were stratified into ecological group, species and diametric class, and then ten traditional models of hypsometric relation were adjusted for the general database and for each stratum. The significance of the models was evaluated by the F test and the t test, with 95% probability. Trends of the estimates were verified with graphical analysis of the residues, being also observed the coefficient of determination (R2 aj.) and standard error of the estimate in percentage (Syx%). By means of the regression parameters, the Graybill models identity test was subsidized. The Trorey model was chosen and it was observed that the stratification by species and ecological group made the adjustment more efficient. Stratification in diametric class showed no gain.

FAKTOR-FAKTOR YANG MEMPENGARUHI KUALITAS AUDIT

2019 ◽  
Vol 5 (1) ◽  
pp. 50-63
Author(s):  
Heru Heryanto ◽  
Nur Laela ◽  
Riana R Dewi
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Audit Quality ◽  
Positive Influence ◽  
T Test ◽  
Coefficient Of Determination ◽  
Analysis Tool ◽  
Validity And Reliability ◽  
Test Analysis ◽  
Analysis Technique

This study aims to determine the significance of the influence of competence, independence, professionalism, auditor experience, accountability, and auditor's knowledge of audit quality. This study uses a questionnaire with a population and sample, namely all auditors who work at the Public Accounting Office (KAP) in the Special Region of Yogyakarta and Surakarta. Sampling techniques using Convenience Sampling with a sample of 61 respondents. The data used in this study is a questionnaire using a Likert scale 1 to 5. The data analysis technique used in this study is multiple linear regression using the SPSSprogram for Windows. The analysis tool in this study using validity and reliability, the classical assumption (normality test, multicollinearity, heteroscedasticity test and autocorrelation test) while the data were analyzed using multiple linear regression test, t test, F test and the coefficient of determination (R2).Based on the results of the t-test analysis performed, it shows that there is a positive influence of competence, independence, professionalism, auditor experience, accountability, and auditor's knowledge of audit quality and simultaneously competency, independence, professionalism, auditor experience, accountability, and auditor knowledge variables affect quality audit

Maintaining Customer Loyalty by Intensifying Service Quality and Customer Satisfaction in Commuter Line Jabodetabek

2019 ◽  
Vol 10 (9) ◽  
pp. 902-909
Author(s):  
Umbas Krisnanto ◽  
◽  
Conny Marpaung ◽  
Keyword(s):  
Data Analysis ◽  
Linear Regression ◽  
Customer Satisfaction ◽  
Service Quality ◽  
Hypothesis Testing ◽  
Customer Loyalty ◽  
T Test ◽  
Coefficient Of Determination ◽  
Simple Linear Regression ◽  
Significance Level

This study aims to determine and analyze the influence of Service Quality and Customer Satisfaction on Customer Loyalty in Jabodetabek Commuter Line. The sample of this study was 50 people. Methods of collecting data by distributing questionnaires. Data analysis using the analysis used is simple linear regression, t test and coefficient of determination. The results showed 1) Service Quality has a positive and significant effect on Customer Loyalty in Jabodetabek Commuter Line, with a significance level of 0.048; and supported by the results of hypothesis testing with a t-count value of 4.433 > t-table value of 1.95, with a significance of 0.048 or < 0.05; 2) Customer Satisfaction positive and significant effect on Customer Loyalty in Jabodetabek Commuter Line, with a level significance of 0,000; and supported by the results of hypothesis testing with a t-count value of 4,969 > t-table value of 1.95, with a significance of 0,000 or < 0.05, 3) Service quality and Customer Satisfaction have a positive and significant effect on Customer Loyalty in Jabodetabek Commuter Line, with a significance level of 0,000. This means that the hypothesis H0 is rejected and Ha is accepted so that it can be concluded that service quality and customer satisfaction together have a positive and significant effect on customer loyalty in Jabodetabek Commuter Line.

PENGARUH PERSONAL SELLING TERHADAP PENCAPAIAN TARGET PENJUALAN (STUDI KASUS PT. SETIAWAN SEDJATI)

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
Ranty Octavianita ◽  
Eki Dudi Darmawan
Keyword(s):  
Data Collection ◽  
Correlation Coefficient ◽  
Research Method ◽  
Quantitative Methods ◽  
Personal Selling ◽  
Strong Relationship ◽  
Regression Equation ◽  
T Test ◽  
Coefficient Of Determination ◽  
Sample Data

The existence of instability in the value of sales is an important evaluation that must be carried out by management. The purpose of this study is to determine the effect of Personal Selling on Sales Targets at PT. Setiawan Sedjati. The location of data collection is done at PT. Setiawan Sedjati Bandung. The research method uses quantitative methods. This research is a descriptive correlation with sample data collection using the Slovin formula. A total of 67 respondents were used as samples in this study consisting of employees of the marketing division and customers of PT. Setiawan Sedjati. The existing samples were then processed using SPSS Statistic Software version 26. Based on the processed data, the results of the regression equation Y = 20.478 + 0.182x. Then the correlation coefficient value of 0.747, it can be said that these results have a strong relationship between variables. The value of the coefficient of determination is 55.8%. The calculated value of 9.068 > 2.6512 this result shows a significant increase between variables on the t-test. It can be concluded that H1 accepted and H0 rejected, namely the variable personal selling. The variable personal selling has an influence on sales.

scholarly journals Assessment of decrease in renal function associated with hypothyroidism

2021 ◽  
Vol 12 (1) ◽  
pp. 275-286
Author(s):  
Ayesha Ammar ◽  
Kahkashan Bashir Mir ◽  
Sadaf Batool ◽  
Noreen Marwat ◽  
Maryam Saeed ◽  
...  
Keyword(s):  
Renal Function ◽  
Confidence Interval ◽  
Creatinine Clearance ◽  
Confidence Intervals ◽  
Standard Error ◽  
Radioactive Iodine ◽  
T Test ◽  
Euthyroid State ◽  
Significant Difference ◽  
The Mean

Objective: Study was aimed to see the effects of hypothyroidism on GFR as a renal function. Material and methods: Total of Fifty-eight patients were included in the study. Out of those forty-eight patients were female and the rest were male. Out of fifty eight patients, fifty three patients were of thyroid cancer in which hypothyroidism was due to discontinuation of thyroxine before the administration of radioactive iodine for Differentiated thyroid cancer.Moreover, remaining five patients were post radioactive iodine treatment (for hyperthyroidism) hypothyroid. All of the patients were above eighteen years of age with TSH value > 30µIU/ml. Pregnant and lactating females were excluded.Renal function tests (urea/creatinine, creatinine clearance) and serum electrolytes followed by Tc-99m-DTPA renal scan for GFR assessment (GATES’ method) were carried out in all subjects twice during the study, One study during hypothyroid state (TSH > 30 µIU/ml) and other during euthyroid state (TSH between 0.4 to 4µ IU/ml). The results of Student’s t-test showed significant difference in renal functions (Urea, creatinine, creatinine clearance, GFR values) in euthyroid state and hypothyroid state (p-value <0.05). RESULTS: In case of creatinine the paired t test reveal the mean 1.014±0.428, with standard error of 0.669 within 95% confidence interval, for creatinine clearance 80.11±14.12 with standard error of 1.94 within 95% confidence intervals, for urea the mean 28±12.13 with standard error of 1.607 within 95% confidence intervals and for GFR for individual kidney is 38.056±8.56 with standard error of 1.3717 within 95% confidence interval. There was no difference in the outcome of the 2 groups. Conclusion: Hypothyroidism impairs renal function to a significant level and hence needs to be prevented and corrected as early as possible.

scholarly journals PENGARUH MOTIVASI KERJA DALAM MENINGKATKAN PRODUKTIVITAS KERJA KARYAWAN PADA PT. SARIGUNA PRIMA TIRTA PULAU SARI KECAMATAN BATI-BATI

2018 ◽  
Vol 4 (3) ◽  
Author(s):  
Syarkani Syarkani
Keyword(s):  
Data Analysis ◽  
Work Motivation ◽  
Work Productivity ◽  
Complex Problem ◽  
Regression Equation ◽  
T Test ◽  
Coefficient Of Determination ◽  
Significance Level ◽  
Purposive Sampling ◽  
Simple Regression

Abstract: Employee work motivation in an organization can be considered simple and can also be a complex problem, because basically humans are easy to be motivated by giving what they want. The purpose of this study was to determine and prove the effect of work motivation on employee work productivity at PT. Sariguna Prima Tirta Pulau Sari Bati-Bati District, Tanah Laut Regency. The main data was obtained through questionnaires to respondents as many as 44 people who were determined by purposive sampling, then supported by the results of observations and direct interviews with respondents. Data analysis was carried out with the help of the SPSS program. It was concluded that the results of the Simple Regression Equation in this study were Y = 18.165 + 0.719 X. Based on the results of the t test, it was found that the work motivation variable had a positive and significant effect on work productivity, because at the 5% significance level t counted greater than t table (8.510 > 2 , 02). The coefficient of determination (r2) is 0.633 which means the ability of the work motivation variable (X) can explain the variable work productivity (Y) of 63.3% while the remaining 36.7% is influenced by other variables not examined in this study. Keywords: motivation, productivity, Bati-Bati Subdistrict Abstrak: Motivasi kerja karyawan dalam suatu organisasi dapat dianggap sederhana dan dapat pula menjadi masalah yang komplek, karena pada dasarnya manusia mudah untuk dimotivasi dengan memberikan apa yang menjadi keinginannya. Tujuan penelitian ini adalah untuk mengetahui dan membuktikan pengaruh motivasi kerja terhadap produktivitas kerja karyawan pada PT. Sariguna Prima Tirta Pulau Sari Kecamatan Bati-Bati Kabupaten Tanah Laut. Data utama diperoleh melalui penyebaran angket kepada responden sebanyak 44 orang yang ditetapkan secara purposive sampling, kemudian didukung dengan hasil observasi dan wawancara langsung dengan responden. Analisis data dilakukan dengan bantuan program SPSS. Disimpulkan bahwa hasil Persamaan Regresi Sederhana dalam penelitian ini adalah Y = 18,165 + 0,719 X. Berdasarkan hasil uji t diketahui variabel motivasi kerja berpengaruh positif dan signifikan terhadap poduktivitas kerja, karena pada taraf signifikasi 5% t hitung lebih besar dari t tabel (8,510 > 2,02).  Koefisien determinasi (r2) sebesar 0,633 yang berarti kemampuan variabel motivasi kerja (X) dapat menjelaskan variabel produktivitas kerja  (Y)  sebesar 63,3% sedangkan sisanya 36,7% dipengaruhi oleh variabel lain yang tidak diteliti dalam penelitian ini. Kata kunci : motivasi,  produktivitas, Kecamatan Bati-Bati

scholarly journals DENSITY MANAGEMENT DIAGRAM FOR Eucalyptus grandis W. Hill. ex Maiden STANDS CONTROLLED BY DOMINANT HEIGHT

FLORESTA ◽  
2020 ◽  
Vol 51 (1) ◽  
pp. 240
Author(s):  
Gabriel Paes Marangon ◽  
Emanuel Arnoni Costa ◽  
César Augusto Guimarães Finger ◽  
Paulo Renato Schneider ◽  
Matheus Teixeira Martins
Keyword(s):  
Eucalyptus Grandis ◽  
Strong Relationship ◽  
Site Index ◽  
Graphical Analysis ◽  
Coefficient Of Determination ◽  
Permanent Plots ◽  
Volume Number ◽  
Dominant Height ◽  
Development Site ◽  
Relationship Of

Density management diagram for eucalyptus stands controlled by dominant height. The present study aimed to elaborate Density Management Diagrams (DMD) for Eucalyptus grandis W. Hill. ex Maiden stands including the dominant height. Data were obtained from permanent plots installed in the Centro Oriental Riograndense region and the Porto Alegre Metropolitan area, both located in the state of Rio Grande do Sul. The models to describe the relationships between average volume, number of trees per hectare, mean diameter, and dominant height were assessed by the statistical criteria of coefficient of determination (R²), standard error of the estimate in percentage (Syx%), and graphical analysis of residuals. The developed DMD allows for a better control of stocks in the management of stands due to the strong relationship of dominant height with stand development site and forest yield.Keywords: Growth, Site index, Forest regulation, Yield.

scholarly journals Impact of Planned Teaching Program on COVID- 19 Vaccination in Terms of Knowledge and Attitude among the People in Selected Rural Area of Nadiad Taluka

2021 ◽  
pp. 179-185
Author(s):  
Patel Shivangi ◽  
Pateliya Jahnvi ◽  
Makwana Pinal ◽  
Chavda Surbhi ◽  
Mahida Rajan ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Standard Error ◽  
Attitude Scale ◽  
T Test ◽  
Teaching Program ◽  
Chi Square ◽  
Rural People ◽  
Knowledge And Attitude ◽  
The Impact ◽  
Paired T Test

Introduction: Vaccination is intended to prevent diseases. Vaccines saves 2-3 million lives every year. A COVID-19 vaccine is one of the best way to provide acquired immunity against COVID -19. The study aims to assess the effectiveness of planned teaching program in terms of knowledge and attitude [1]. Objective: To assess the impact of planned teaching program on COVID- 19 vaccination in terms of knowledge and attitude among the rural people. Method: A quantitative study with one group pre test post test design was conducted at various rural places of Nadiad Taluka. A total 60 people were enrolled in to the study. A structured knowledge questionnaire and likert attitude scale was built that contained information regarding COVID 19 vaccination. The effect of teaching program was analyzed by statically Results: T-test and chi square test was used to find the association with selected demographic variables. In the knowledge regarding COVID-19 vaccination range was 8, mean was 0.849 standard deviation was 0.357, standard error mean was 0.0595. In the attitude range was 33, mean was 4.345, standard deviation was 0.797, standard error mean was 0.132. A knowledge paired t-test value was 5.30 and the attitude paired t-test value was 6.57 was. Conclusion: The planned teaching program was effective in increasing knowledge and attitude regarding COVID-19 vaccination among the rural people of Nadiad Taluka.

scholarly journals Multigroup Moderation Test in Generalized Structured Component Analysis

CAUCHY ◽  
2016 ◽  
Vol 4 (2) ◽  
pp. 81
Author(s):  
Angga Dwi Mulyanto ◽  
Solimun Solimun ◽  
Ni Wayan Surya Wardhani ◽  
Suharno Suharno
Keyword(s):  
Least Squares ◽  
Standard Error ◽  
Complex Analysis ◽  
Component Analysis ◽  
T Test ◽  
Free Software ◽  
Path Coefficient ◽  
Generalized Structured Component Analysis ◽  
Sample Size Estimate ◽  
Long Time

Generalized Structured Component Analysis (GSCA) is an alternative method in structural modeling using alternating least squares. GSCA can be used for the complex analysis including multigroup. GSCA can be run with a free software called GeSCA, but in GeSCA there is no multigroup moderation test to compare the effect between groups. In this research we propose to use the T test in PLS for testing moderation Multigroup on GSCA. T test only requires sample size, estimate path coefficient, and standard error of each group that are already available on the output of GeSCA and the formula is simple so the user does not need a long time for analysis.

scholarly journals Analisis Islamic Social Reporting pada Perbankan Syariah di Indonesia

2021 ◽  
Vol 1 (3) ◽  
pp. 572-585
Author(s):  
Rizki Setiawan ◽  
Hasbi Assidiki Mauluddi ◽  
Dadang Hermawan
Keyword(s):  
Hypothesis Testing ◽  
Firm Size ◽  
Commercial Banks ◽  
T Test ◽  
Social Reporting ◽  
Annual Reports ◽  
Coefficient Of Determination ◽  
Company Size ◽  
Net Income ◽  
F Test

This study aims to determine and analyze the effect of profitability, liquidity, company size and leverage on Islamic Social Reporting on Islamic commercial banks in Indonesia in the 2014-2018 period with the board of commissioners as a moderating variable. The main problem in this study is how much influence the profitability of the ISR is calculated through return on assets (ROA), namely the ratio between net income and total assets, liquidity to ISR calculated through the current ratio (CR), namely the ratio between current assets with current debt, the size of the company against ISR calculated by the natural logarithm of total assets, the effect of leverage on ISR calculated through the debt to assets rasio (DAR) and the board of commissioners as a moderating variable measured by the number of sharia board of commercial banks. The sampling technique using purposive sampling and obtained 7 company samples from a total of 14 population of Muamalat Indonesia Bank, BRI Syariah, BNI Syariah Bank, Mandiri Syariah Bank, Mega Syariah Bank, Syariah Bank Bukopin, BCA Syariah Bank. This type of research used in this study is quantitative. The data used in this study are secondary data in the form of finansial and annual reports. Data analysis techniques that researchers use are descriptive statistical analysis, classic assumption tests, Modereted Regression Analysis (MRA), partial hypothesis testing (t test), simultaneous hypothesis testing (f test), and coefficient of determination (R test). The R test of this study shows that the overall contribution of the independent variables, namely Profitability, Liquidity, Firm Size and Leverage to the dependent variable, namely ISR which is moderated by the Board of Commissioners variable is 70%, while 30% is determined by other variables not examined in this study. The F test of this study shows that simultaneously profitability, liquidity, firm size and leverage have a positive effect on ISR. The T test shows that profitability, liquidity, company size and leverage partially affect the ISR. The results of the moderation test are only liquidity and company size which are well moderated by the size of the board of commissioners in conducting ISR disclosures.

scholarly journals THE INFLUENCE OF PRODUCT VARIATIONS, PRICES AND SALES PROMOTIONS ON CONSUMER DECISIONS IN BUYING MITSUBISHI CARS IN SURAKARTA

2017 ◽  
Vol 1 (01) ◽  
Author(s):  
M. Hasan Ma'ruf
Keyword(s):  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
T Test ◽  
Test Reliability ◽  
Coefficient Of Determination ◽  
Test Results ◽  
Purchasing Decisions ◽  
Sales Promotions ◽  
F Test ◽  
Consumer Decisions

The purpose of this study was to analyze the effect of product variations, prices and sales promotions on consumer decisions in buying Mitsubishi cars in Surakarta both partially and partially. The data analysis techniques used are validity test, reliability test, classic assumption test, multiple linear regression analysis, t test, F test, coefficient of determination (R²). The results obtained: 1) The results of the t test obtained product variations have a positive and significant effect on purchasing decisions, the price has a positive and significant effect on purchasing decisions and promotion has a positive and significant effect on purchasing decisions, 2) F test results obtained Sig. amounting to 0,000 smaller than 0.05 or sig. = 0.000

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