linear regression analysis
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2023 ◽  
Vol 83 ◽  
Author(s):  
S. Aziz ◽  
J. Altaf ◽  
A. Ramzan ◽  
Z. Ahmed ◽  
S. U. R. Qamar ◽  
...  

Abstract Physids belong to Class Gastropoda; Phylum Mollusca have important position in food web and act as bio indicators, pests and intermediate host. Being resistant these are called cockroaches of malacology. Physid snails were collected from different water bodies of Faisalabad (Punjab) and were identified up to species using morphological markers. The morphometry of the specimens was carried out with the help of a digital Vernier caliper in millimeters (mm) using linear measurement of shell characters. Linear regression analysis of the AL/SW ratio vs AL and SL/SW ratio vs AL indicated that allometric growth exists only in Physa acuta when compared with P.gyrina and P. fontinalis. This study will lead to assess the status of the Physid species in Central Punjab. The Principal component analysis shows that the Component 1 (Shell Length) and component 2 (Shell Width) are the most prolific components and nearly 80 percent of the identification. The distance between P. acuta and P. fontinalis is 5.4699, P. acuta and P. gyrina is 7.6411, P. fontinalis and P. gyrina is 16.6080 showing that P. acuta resembles with P. fontinalis, and both these specimens donot resemble with P. gyrina. P.acuta is an invasive species and shows bioactivity making it a potent candidate for bioactive substances.


2022 ◽  
Vol 4 (3) ◽  
pp. 683-693
Author(s):  
Reni Ria Armayani Hasibuan ◽  
Anggi Kartika ◽  
Firdha Aigha Suwito ◽  
Lismaini Agustin

This study has the benefit of analyzing the effect of regional gross domestic product on poverty in the city of Medan in 2010-2020. The research method used is a quantitative method with reference to a descriptive approach. The data used is time series data on economic growth and poverty at the Central Statistics Agency (BPS) of Medan City in 2010-2020. Data collection techniques used are journals, book documentation, and previous reports. The technique of analyzing the data uses simple linear regression analysis which is carried out to determine whether the model used is free from deviations from the classical assumption test. The equations obtained from the simple linear regression analysis test Y = 24576.325 – 0.365X and have the understanding that the GRDP variable (X) has a significant effect on Poverty (Y). Obtained a value of R2 (R square) of 0.556 with the understanding that the independent variable, namely GRDP, affects the variable of the poverty level in Medan City by 55.6%. Meanwhile, the remaining 44.4% are influenced by different independent variables and are not included in this study. For this reason, it can be concluded that when GRDP increases, it will have an impact on decreasing the value of Poverty in Medan City, and vice versa. Keywords: Gross Regional Domestic Product; Poverty; Medan city


2022 ◽  
Vol 8 ◽  
Author(s):  
Momoko Matsuyama ◽  
Keiji Hirai ◽  
Hiroaki Nonaka ◽  
Moeka Ueda ◽  
Junki Morino ◽  
...  

Objective:The aim of this study was to investigate the effects of elobixibat on constipation and lipid metabolism; and determine the factors associated with the effect of elobixibat on constipation in patients with moderate to end-stage chronic kidney disease (CKD).Methods:Stool frequency and serum lipid parameters were retrospectively analyzed before and after 4 weeks of elobixibat administration in 42 patients (CKD stage G3, 6; stage G4, 9; stage G5, 9; stage G5D, 18). Relationships between the change in stool frequency after initiation of elobixibat and various clinical parameters were analyzed by using linear regression analysis.Results:Elobixibat increased stool frequency from 0.5 ± 0.4 per day to 1.1 ± 0.6 per day (p < 0.001) regardless of whether patients were undergoing dialysis, on concomitant laxatives, or were administered elobixibat before or after breakfast. Elobixibat reduced low-density lipoprotein cholesterol concentration (from 90.9 ± 37.2 mg/dL to 77.5 ± 34.8 mg/dL, p < 0.05) and increased high-density lipoprotein cholesterol concentration (from 44.9 ± 14.3 mg/dL to 57.0 ± 25.8 mg/dL, p < 0.05), but did not change triglyceride concentration. Adverse effects were observed in two patients (nausea and diarrhea). Only phosphate concentration was correlated with the change in stool frequency after initiation of elobixibat (standard coefficient = 0.321, p = 0.043).Conclusions:Elobixibat improved constipation and lipid metabolism in patients with moderate to end-stage CKD, without serious adverse events.


2022 ◽  
Vol 4 (4) ◽  
pp. 1050-1068
Author(s):  
Imam Khulwani ◽  
Risal Rinofah ◽  
Pristin Prima Sari

This study aims to determine the effect of Regional Original Income, General Allocation Funds, Special Allocation Funds, partially and simultaneously effecting Capital Expenditures in Regencies/Cities in the Province of the Special Region of Yogyakarta (DIY) in 2016-2020. The type of research used is the type of quantitative research. Secondary data obtained from the website (http://www.djpk.kemenkeu.go.id). In this study, it was analyzed using descriptive analysis and multiple linear regression analysis and processed with SPSS version 25. The results of this study indicate that partially: the Regional Original Income (PAD) variable has a partial effect on Capital Expenditures in 4 regencies and 1 city in the Special Region of Yogyakarta (DIY), the General Allocation Fund (DAU) does not partially affect Capital Expenditures. , the Special Allocation Fund (DAK) has an effect on Capital Expenditures in 4 districts and 1 city in the Province of the Special Region of Yogyakarta (DIY). Meanwhile, simultaneously: Variables of Local Revenue (PAD), General Allocation Fund (DAU), Special Allocation Fund (DAK) simultaneously have a significant effect on Capital Expenditures in 4 districts and 1 city in the Special Region of Yogyakarta (DIY). ) with the period 2016-2020. Keywords: Regional Original Revenue, General Allocation Fund, Special Allocation Fund, Capital Expenditure.


2022 ◽  
Vol 4 (4) ◽  
pp. 1032-1049
Author(s):  
Abdul Aziz Suryadi ◽  
Risal Rinofah ◽  
Pristin Prima Sari

This research aimed to examine the effect of Capital Adequacy Ratio (CAR), Non Performing Loan (NPL),Operating Expenses Operating Income (BOPO) and Loan to Deposite Ratio (LDR) ratios on profitability (ROA). This type of research is quantitative research. The sample selection method in this research used purposive sampling method. The sample used was 20 of 45 banking companies listed on the Indonesia Stock Exchange with the periode 2016-2020. The analytical method used was multiple linear regression analysis using the SPSS version 22 program. The result showed that the Capital Adequacy Ratio (CAR) t test had a significant effect on profitability (ROA)  partially, Operating Expenses Operating Income (BOPO) has a negative effect on profitability(ROA) partially, then Non Performing Loan (NPL) and Loan to Deposite Ratio (LDR) have a positive and not significant effect on profitability (ROA). And from the result of the f test, the Capital Adequacy Ratio (CAR), Non Performing Loan (NPL), Operating Expenses Operating Income (BOPO) and Loan to Deposite Ratio (LDR) variables have a simultaneous effect on profitability (ROA).  Keywords: CAR, NPL, BOPO, LDR, ROA


2022 ◽  
Vol 4 (4) ◽  
pp. 1013-1031
Author(s):  
Widya Karanita ◽  
Ignatius Soni Kurniawan

This study aims to analyze the effect of quality of work life and intrinsic motivation on affective commitment with job satisfaction as a mediating variable on the employees of Dinas Perhubungan Kabupaten Bantul. This type of research is quantitative research. The sample size of this study was 92 employees. The sampling technique used the accidental sampling method. The data collection method in this study used a questionnaire. The data analysis technique used multiple linear regression analysis and Sobel test. The results showed that the quality of work life had a significant effect on job satisfaction. Intrinsic motivation has no significant effect on job satisfaction. Quality of work life has a significant effect on affective commitment. Intrinsic motivation and job satisfaction have no significant effect on affective commitment. Job satisfaction does not mediate the effect of quality of work life and intrinsic motivation on affective commitment. Keywords: Affective Commitment; Intrinsic Motivation; Job Satisfaction; Quality of Work Life.


2022 ◽  
Vol 4 (3) ◽  
pp. 437-446
Author(s):  
Arum Ludianingsih ◽  
Gendro Wiyono ◽  
Ratih Kusumawardhani

Companies need funds to finance their operational activities, therefore a company must be able to attract investors to be interested in investing their capital. The high and low value of the company can be an attraction for investors. In addition to reflecting current conditions, company value can also describe the company's prospects in the future. Because it is important to do a research on what factors can have an influence on the value of the company. This study aims to analyze the effect of profitability, liquidity, firm size and investment decisions on firm value. The study was conducted on banks listed on the Indonesia Stock Exchange in 2018-2020, the sampling method used a purposive sampling technique. The analytical technique used is multiple linear regression analysis with the help of the SPSS program. The results of this study indicate that the variables of profitability, liquidity and investment decisions have a positive and significant effect on firm value. While the firm size variable has a negative and insignificant effect on firm value. Keywords: firm value, profitability, liquidity, firm size, investment decisions


2022 ◽  
Vol 4 (3) ◽  
pp. 554-484
Author(s):  
Reza Prasetya Putera ◽  
Irwanto Irwanto ◽  
Bagus Dwi Cahyono

Education is an important thing at this time, especially in college. One form of education is practical activities carried out to improve student experience and understanding. Things that affect student competence are the competence of laboratory assistants, practical facilities, practical worksheets  and theoretical understanding. This study was conducted to determine the magnitude of the influence of the competence of laboratory assistant practical facilities, practical jobsheets and theoretical understanding on the competence of students of Electrical Engineering Vocational Education, University of Sultan Ageng Tirtayasa. This study is an ex-post facto research using quantitative research methods whose data were obtained using questionnaires and tests distributed to students of Electrical Engineering Vocational Education at Sultan Ageng Tirtayasa University who did practicum and then processed using the SPSS 25.0 application with simple linear regression analysis techniques and also regression double. The results of the study showed that there was a significant effect of the laboratory assistant competency variable, while the practical facilities variable, practical worksheet and theoretical understanding did not have a significant influence on the student competency variable. Keywords: Practice, Laboratory Assistant,  Facilities,  Jobsheet, Theory Understanding


Author(s):  
Chelsea L. Kracht ◽  
J. Gracie Wilburn ◽  
Stephanie T. Broyles ◽  
Peter T. Katzmarzyk ◽  
Amanda E. Staiano

Night-time screen-viewing (SV) contributes to inadequate sleep and poor diet, and subsequently excess weight. Adolescents may use many devices at night, which can provide additional night-time SV. Purpose: To identify night-time SV patterns, and describe differences in diet, sleep, weight status, and adiposity between patterns in a cross-sectional and longitudinal manner. Methods: Adolescents (10–16 y) reported devices they viewed at night and completed food recalls. Accelerometry, anthropometrics, and imaging were conducted to measure sleep, weight status, and adiposity, respectively. Latent class analysis was performed to identify night-time SV clusters. Linear regression analysis was used to examine associations between clusters with diet, sleep, weight status, and adiposity. Results: Amongst 273 adolescents (12.5 ± 1.9 y, 54% female, 59% White), four clusters were identified: no SV (36%), primarily cellphone (32%), TV and portable devices (TV+PDs, 17%), and multiple PDs (17%). Most differences in sleep and adiposity were attenuated after adjustment for covariates. The TV+PDs cluster had a higher waist circumference than the no SV cluster in cross-sectional analysis. In longitudinal analysis, the primarily cellphone cluster had less change in waist circumference compared to the no SV cluster. Conclusions: Directing efforts towards reducing night-time SV, especially TV and PDs, may promote healthy development.


2022 ◽  
Vol 2022 ◽  
pp. 1-13
Author(s):  
Beulah M ◽  
MR Sudhir ◽  
Shenen Chen ◽  
Sasha Rai ◽  
Deekshith Jain

Numerous works are reported in literature regarding the enhancement of compressive strength of fly ash-GGBS geopolymer combinations with addition of alkali activators of varying concentrations. However, a limited study has been chronicled, revealing the specific role of alkali or alkaline earth contributed by the fly ash-GGBS combinations on the compressive strength development. It is well known that the strength of a geopolymer is dependent on gel formation from Al/Si ratio, Ca/Si ratio, and Ca/(Si + Al) ratio but their exact role when cured for various extended periods is unknown as yet. In the present study, alkali concentration in a fly ash-GGBS geopolymer combination was varied from 6 M to 12 M with increments of two mol in six different fly ash-GGBS combinations with a minimum of 20 percent and a maximum of 70 percent GGBS. The correlation coefficients between compressive strength and Al/Si, Ca/Si, and Ca/(Si + Al) ratios exhibited values higher than 0.95 taken individually. Multiple linear regression analysis with compressive strength (as dependent parameter) and individual values of Al/Si, Ca/Si, and Ca/(Si + Al) ratios (as independent parameters) was effectuated. It was observed that, depending on the composition, the compressive strength circumstantiated a changeover from Ca/Si to Ca/(Si + Al) ratio in the intermediate composition range. Such a detailed analysis is considered supportive of developing a suitable composition which will provide the optimum compressive strength of the combination.


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