scholarly journals Validation of Diagram Scale for Leaf Spot Caused by Pestalotiopsis sp. in Coconut Seedlings

2020 ◽  
Vol 8 (2) ◽  
pp. 32
Author(s):  
Aline Figueiredo Cardoso ◽  
Fernanda Sarmento de Oliveira Louzano ◽  
Cássia Cristina Chaves Pinheiro ◽  
Paulo Manoel Pontes Lins ◽  
Gisele Barata Da Silva

The absence of a methodology to quantify Pestalotiopsis sp. in coconut plants (Cocos nucifera L.) justified the elaboration and validation of a diagrammatic scale containing seven values (2%, 5%, 10%, 15%, 20%, 40% and 60%) of disease severity, in a sampling under natural conditions of occurrence in the field. To elaborate the diagrammatic scale, 100 leaves of Cocos nucifera L. were obtained from an experimental field of Fazenda Reunidas Sococo in Santa Isabel, Pará. The images of these leaves were obtained with the aid of a digital camera. Subsequently, with the aid of Assess 2.0 APS software, the actual disease severity values were obtained in percentage terms. The validation of the proposed diagrammatic scale was performed by ten inexperienced evaluators who evaluated the projected images without the aid of the suggested scale, and later, with the aid of the scale. From the data obtained from the evaluators with and without scale, linear regression analysis was performed, relating the real severity and the estimated severity. The accuracy of the estimates was evaluated by the regression determination coefficient (R2) and the variance of the absolute errors. The accuracy of each evaluator was determined by the t-test applied to the angular coefficient of line (b) and the linear coefficient of line (a), both obtained by linear regression. Through the coefficient of determination values, It is possible to verify that the use of the scale gave greater accuracy to 100% of the evaluators with an average of 0.94 and 94% repeatability. The use of the diagrammatic spot scale for Pestalotiopsis sp. it enables future work with accuracy and precision, as well as optimizing disease control practices within a coconut tree nursery management program.

2019 ◽  
Vol 1 (1) ◽  
pp. 39
Author(s):  
Ngurah Pandji Mertha Agung Durya

<p>This study aims to find evidence, the influence of Audit Quality Attributes, Client Satisfaction and Client Loyalty, which are moderated by Fraud Confirmation. The research was conducted at the BKM, a community-based organization, formed by the Government, through the <em>Kotaku</em> Program. The research used Regression statistical analysis and conducted a hypothesis test. Regression analysis used includes Simple Linear Regression Analysis, Multiple Regression Analysis, and MRA Regression Analysis, and Path Model Linear Regression Analysis. This study also pays attention to the calculation of the coefficient of determination to give an idea of the ability of the model in explaining the phenomenon of Client Satisfaction and Client Loyalty. The result that both partially and simultaneously, Audit Quality Attributes, Fraud Confirmation affected Client Satisfaction and Loyalty. The research also succeeded in proving that Client Satisfaction mediates the effect of Audit Quality Attributes on Client Loyalty, but failed to provide empirical evidence, that the Fraud Confirmation moderated the effect of Audit Quality Attributes on Client Satisfaction and Loyalty. Contribution to audit practices, where it is important to realize Client Satisfaction through Audit Quality Attributes and Fraud Confirmation, especially in situations where Fraud acts are suspected.</p>


2018 ◽  
Vol 13 (1) ◽  
pp. 59
Author(s):  
Samrotu Sa’adah ◽  
Arif Partono Praseti

This study aims to examine the effect of work stress on employee turnover intention at PT Internusa Jaya Sejahtera Merauke, Papua. This study obtained data from questionnaires distributed to 117 employees of PT Internusa Jaya Sejahtera. The questionnaire used has 14 point statements and uses a 6 point Likert scale. The technique used in this research is descriptive analysis technique used to analyze the level of work stress and turnover intention level on employees. Simple linear regression analysis is also used to determine the effect between work stress variables and turnover intention variables. The results showed that work stress had a significant positive effect on turnover intention on employees of PT Internusa Jaya Sejahtera. The coefficient of determination in this study has a value of 0.571 which means that the level of job stress to turnover intention of 57.1%.Keywords : work stress, turnover intention, linear regression ABSTRAK Penelitian ini bertujuan untuk meneliti pengaruh stres kerja terhadap turnover intention pada karyawan di PT Internusa Jaya Sejahtera Merauke, Papua. Peneltian ini memperoleh data dari hasil penyebaran kuesioner kepada 117 karyawan PT Internusa Jaya Sejahtera. Kuesioner yang digunakan memiliki 14 butir pernyataan dan menggunakan skala Likert 6 poin. Teknik yang digunakan pada penelitian kali ini adalah teknik analisis deskriptif yang digunakan untuk menganalisis tingkat stres kerja dan tingkat turnover intention pada karyawan. Analisis regresi linier sederhana juga digunakan unntuk mengetahui pengaruh antara variabel stres kerja dan variabel turnover intention. Hasil penelitian menunjukkan bahwa stres kerja berpengaruh signifikan positif terhadap turnover intention pada karyawan PT Internusa Jaya Sejahtera. Koefisien determinasi pada penelitian ini memiliki nilai 0.571 yang memiliki arti bahwa tingkat stres kerja terhadap turnover intention sebesar 57,1%.Kata kunci : stres kerja, turnover intention, regresi linier.


2020 ◽  
Vol 6 (8) ◽  
pp. 1607
Author(s):  
Dian Anggraini ◽  
Imron Mawardi

The purpose of this study is to analyze the factors that affect the profitability of Sharia Commercial Bank in Indonesia. The sampling technique used is saturated sampling, so the population and sample is the Sharia Commercial Bank periode October 2014-March 2018 which amounted to 42 months. This study uses a quantitative approach with multiple linear regression analysis technique.The result showed that with 95% confidence level partially variable Financing to Deposit Ratio have significant effect to profitability, while variable Natural Uncertainty Contract Financing, Non Performing Financing, and Equity have no significant effect on profitability of Sharia Commercial Bank in Indonesia. Nevertheless, Natural Uncertainty Contract Financing, Non Performing Financing, Financing to Deposit Ratio and Equity simultaneously have significant effect to the profitability of Sharia Commercial Bank in Indonesia. With the coefficient of determination of 33,2%.Keywords: Natural Uncertainty Contract, Non Performing Financing, Financing to Deposit Ratio, Equity


2019 ◽  
Vol 2 (1) ◽  
pp. 62-72
Author(s):  
Intan Maizah Ela Yani ◽  
Myrna Sofia ◽  
Nurhasanah Nurhasanah

This study aims to determine the effect of training, work discipline and organizational culture on the organizational commitment of employees of PT. PLN (Persero) Tanjungpinang Area. The research method used is descriptive statistical method with a quantitative approach. Data collection techniques are carried out by observation and questionnaire. The number of research samples used was 74 respondents. Analysis of the data used is multiple linear regression analysis, hypothesis testing in the form of T test and F test and analysis of the coefficient of determination. The research conducted resulted in training having a significant effect on the organizational commitment of employees of PT. PLN (Persero) Tanjungpinang Area because the value of t arithmetic> t table or 23,057> 1,994 and the significance value produced 0,000 <0,05. Work Discipline has a significant effect on the organizational commitment of employees of PT. PLN (Persero) Tanjungpinang Area because the value of t count> ttable or 2.649> 1.994 and the significance value produced 0.010 <0.05. Organizational culture does not affect the organizational commitment of employees of PT. PLN (Persero) Tanjungpinang Area because the value of t count <t table or -1.424> 1.994 and the significance value produced is 0.159> 0.05.


Author(s):  
Adhitya Yuspitara ◽  
Karona Cahya Susena ◽  
Herlin

Adhitya Yuspitara, Karona Cahya Susena, Herlin; The purpose of this study is to provide an overview of tax collection actions with a forced letter made in the tax office Pratama Argamakmur, Knowing the effect of tax collection by a forced letter in the tax service office pramama argamakmur in order to increase tax revenue in KPP Prtama Argamakmur in particular corporate income tax.  Data collection method used is secondary data in the form of documentation. The method of analysis used is simple linear regression analysis and hypothesis testing with t test. Based on the results of research and data analysis on the effect of tax collection with a letter of force against tax revenue in the tax office Pratama Argamakmur can draw the conclusion of the results of simple correlation analysis, simple linear regression value Y=7.105.100,391+977.683,917X r value = 0,803 The coefficient of determination = 0.645 and the value of t arithmetic greater than t table is 5,714>1.725 it indicates that Ho is rejected and Ha received which means that there is influence of tax collection with the letter of force against the tax revenue.Key Words:  Tax collection and Tax Receipts


2019 ◽  
Vol 5 (3) ◽  
pp. 1
Author(s):  
Sudartono Phannoto

Universitas Harapan Medan is a leading university in Medan with four faculties divided into fourteen study programs consisting of three vocational programs, ten undergraduate programs, and a postgraduate program.This study aimed to empirically examine the influence of perceptions of accreditation, cost of education, and promotion on the decision of prospective students. It used a quantitative approach. The population and samples were 227 and 145 people respectively. The types of data used were primary and secondary data. The data collection techniques used were questionnaires, interviews, literature review, and document review. Tests carried out in this study were validity and reliability tests, classical assumption tests including normality test, multicollinearity test, and heteroscedasticity test, hypothesis tests including F test and t test, multiple linear regression analysis, and coefficient of determination (R2). The result of multiple linear regression was Y = 3.882 + 0.294 X1 + 0.027 X2 + 0.584 X3.In this study, the result also indicated that 62.8% of the Decision of Prospective Students at Universitas Harapan Medan were influenced by Accreditation (X1), Cost of Education (X2), and Promotion (X3), while the remaining 37.2% were influenced by other factors not being examined.


2019 ◽  
Author(s):  
novi yanti

This study aims to determine affect of size and leverage on firm value of BUMN companies listed on the Stock Exchange in 2012-2017 either partially or simultaneously. The population in this study are all of BUMN companies listed on the Stock Exchange from 2012-2017, which amounted to 20 companies. The sample is in the form of selected BUMN company financial statements with certain criteria from 2012-2017. The analytical method used is multiple linear regression analysis and coefficient of determination. Hypothesis testing uses t test and F test. The results of multiple linear regression analysis indicate that firm size has a negative effect on firm value. Leverage has a positive effect on firm value. The results of the partial hypothesis test indicate that size has a significant effect on firm value while leverage does not have a significant effect on firm value. Simultaneously size and leverage have a significant effect on firm value. The contribution of size and leverage to company value is 43.8% and the remaining 56.2% is influenced by other variables.


2020 ◽  
Vol 7 (2) ◽  
pp. 116-126
Author(s):  
Ani Widosari Trisnaningsih ◽  
Haryono Umar

In making a profitability decision, of course the company must have sufficient capital to finance operations in the company. This is to see how the influence of working capital and operational costs on profitability. The research method used by researchers is the method of multiple linear regression analysis, the coefficient of determination test, also performed a classic assumption test that is the Normality, Multicollinearity, Heteroscedasticity and Autocorrelation Tests and also the Hypothesis Test which consists of the F Test and the t Test.Based on the t test (partially) it can be seen that working capital has a significant effect on profitability. Whereas Operational Costs do not affect the profitability. And based on the F Test the value of Fcalculates that working capital and operational costs affect profitability. 


2020 ◽  
Vol 5 (02) ◽  
pp. 203-213
Author(s):  
Suci Wahyuliza ◽  
Yudhi Rahmansyah

This study aims to determine the effect of Corporate Social Responsibility and company profitability on tax avoidance practices at PT. Bank Rakyat Indonesia (Persero). The approach taken in this research is a quantitative descriptive approach. Data collection techniques in this study are to use documentation techniques and literature study. Meanwhile, the analysis technique used is multiple linear regression, classical assumption test, hypothesis test (t test, f test) and the coefficient of determination. Based on multiple linear regression analysis, Tax Avoidance Practices are obtained of 0.669, which means that if CSR and Profitability do not exist or are equal to zero, then Tax Avoidance Practices are 0.225. Partially, CSR (X1) and Profitability (X2) have a significant effect on Tax Avoidance Practices (Y). Simultaneously, CSR (X1) and Profitability (X2) together have a significant effect on Tax Avoidance Practices (Y).                                  


2019 ◽  
Vol 1 (2) ◽  
pp. 150-163
Author(s):  
Asmawiyah _

This study aims to determine the influence of leadership style and organizational culture on the performance of employees of PT. Japfa Comfeed Indonesia, Tbk Makassar Unit. The research model used in this study is the method of observation, interviews, questionnaires, and literature studies conducted systematically based on the research objectives. The sample in this study is 95 respondents. The analytical method used is multiple linear regression analysis, coefficient of determination analysis (R2), T test (partial) and F test (simultaneous). The results of the study show that leadership styles have a positive and significant influence on employee performance while organizational culture has a positive but not significant effect on employee performance. This makes the leadership style the most dominant variable affecting the performance of employees at PT. Japfa Comfeed Indonesia, Tbk Makassar Unit.


Sign in / Sign up

Export Citation Format

Share Document