scholarly journals Hubungan antara Nitrat dan Fosfat dengan Kelimpahan Fitoplankton di Waduk Jatibarang Semarang Correlation between Nitrate and Phospate with Abundance of Phytoplankton in Jatibarang Reservoir, Semarang

2020 ◽  
Vol 9 (1) ◽  
pp. 23-30
Author(s):  
Muhammad Khoirul Ikhsan ◽  
Siti Rudiyanti ◽  
Churun Ain
Keyword(s):  
Regression Analysis ◽  
Data Processing ◽  
Correlation Coefficient ◽  
Trophic State ◽  
Coefficient Of Determination ◽  
Quality Of Water ◽  
Water Based ◽  
The Relationship ◽  
The City

ABSTRAK Waduk Jatibarang merupakan salah satu waduk yang memiliki peran penting di Kota Semarang sehingga kualitas perairannya perlu diperhatikan. Keberadaan fitoplankton di perairan berkaitan erat dengan kesuburan dan kualitas suatu perairan dikarenakan fitoplankton berperan sebagai produsen primer. Tujuan penelitian ini untuk mengetahui kualitas perairan berdasarkan kelimpahan fitoplankton serta melihat sejauh mana korelasi nitrat dan fosfat akan mempengaruhi kelimpahan fitoplankton diperairan. Penelitian dilakukan pada tanggal 27 Maret 2019 di Waduk Jatibarang semarang. Pengambilan sampel dilakukan menggunakan metode purposive sampling di tujuh stasiun dengan tiga titik kedalaman (permukaan, tengah dan dasar perairan) dan tiga pengulangan (pagi, siang dan malam). Pengolahan data menggunakan program SPSS 25 dengan analisis regresi liner berganda. Konsentrasi nitrat yang didapatkan berkisar antara 0,45-9,64 mg/l, konsentrasi fosfat berkisar antara 1,26-4,81 mg/l, kelimpahan fitoplankton berkisar antara 1.667 – 275.833 ind/l. Hubungan antara konsentrasi nitrat dan fosfat dengan kelimpahan fitoplankton tergolong lemah dengan koefisien korelasi (r = 0,378). Nitrat dan fosfat mempengaruhi kelimpahan fitoplankton sebesar 15% dengan koefisien determinasi (r square = 0,150). Tingkat kesuburan di Waduk Jatibarang termasuk dalam kategori mesotrofik hingga eutrofik berdasarkan konsentrasi nitrat, fosfat dan kelimpahan fitoplankton. ABSTRACT Jatibarang Reservoir is one of the reservoirs that has an important role in the city of Semarang so that the quality of its waters needs to be considered. The presence of phytoplankton in waters is closely related to the fertility and quality of a waters because phytoplankton act as primary producers. The purposes of this research are to determine the quality of water based on the consentration of nitrate and phosphate, to calculate the abundance of phytoplankton and also to know the correlation of nitrates and phosphate toward the abundance of phytoplankton. The research was conducted on 27 March 2019 in Jatibarang Reservoir Semarang. Sampling was carried out at seven stations with three depth points (surface, middle and bottom) and three repetitions (morning, day and night). Data processing using SPSS 25 programme with multiple liner regression analysis. The concentration of nitrate gained ranged from 0.45 - 9.64 mg/l, phosphate concentrations ranged from 1.26 - 4.81 mg/l, the abundance of phytoplankton ranges between 1,667 – 275,833 ind/l. The relationship between nitrate and phosphate concentrations with an abundance of phytoplankton is relatively weak with a correlation coefficient (r = 0.378). Nitrates and phosphates affect the abundance of phytoplankton by 15% with coefficient of determination (r square = 0.150). Water’s trophic state in the Jatibarang reservoir belongs to the mesotrophic up to Eutrophic category.

scholarly journals Statistical modeling of residential complex construction project

2019 ◽  
Vol 91 ◽  
pp. 08001
Author(s):  
Pavel Morozovskiy ◽  
Ilya Kulish ◽  
Denis Muradov ◽  
Kirill Kulakov
Keyword(s):  
Regression Analysis ◽  
Data Processing ◽  
Correlation Coefficient ◽  
Statistical Modeling ◽  
Statistical Data ◽  
Statistical Simulation ◽  
Effective Characteristic ◽  
Project Duration ◽  
Complex Construction ◽  
The Relationship

The article presents a statistical simulation of the deviation of the project duration from the planned value. Regression analysis was carried out - a method of statistical data processing that allows measuring the relationship between one or more causes (factor characteristics) and the consequence (effective characteristic). The end result is a curve and a correlation coefficient, which with a certain probability will allow us to predict the amount of pecuniary injury in this project.

scholarly journals PENGARUH MANAJEMEN FUNDRAISING DAN KUALITAS PELAYANAN TERHADAP KEPERCAYAAN MUZAKKI PADA WAHDAH INSPIRASI ZAKAT CABANG KALIMANTAN TIMUR

2021 ◽  
Vol 9 (4) ◽  
pp. 261
Author(s):  
Riyani Riyani
Keyword(s):  
Quality Of Service ◽  
Service Quality ◽  
Correlation Coefficient ◽  
Total Sample ◽  
T Test ◽  
Coefficient Of Determination ◽  
East Kalimantan ◽  
Independent Variable ◽  
The Relationship

This study aims to determine the effect of fundraising management and service quality on muzakki trust. This research was conducted at Wahdah Inspirasi Zakat (WIZ) East Kalimantan branch with a total sample of 92 respondents. Collecting data in this study using a questionnaire distributed to respondents. The results showed that 92 respondents obtained a correlation coefficient (R) of 0.766, which means that the relationship between the independent variable and the dependent variable is strong. The coefficient of determination (R2) obtained is 0.586 or 58.6%, which means that the influence of fundraising management variables and service quality is 58.6% on Muzakki's trust and 41.4% is influenced by other variables. The F test obtained is very significant, the effect of fundraising management and service quality on muzakki's trust is 63,116> 3,10, there is a simultaneous significant effect on muzakki's trust. The t test (partial) on the fundraising management variable on Muzakki's trust was 1.307 <1.986, which means that fundraising management did not have a significant effect on Muzakki's trust, while the t (partial) test on the variable service quality on Muzakki's trust was 8.387 <1.986 which This means that the quality of service has a significant effect on Muzakki's trust.

scholarly journals Analysis of Profitability Performance Based on the Problem Financing Sector in BPRS in Bekasi City

MANAZHIM ◽  
2019 ◽  
Vol 1 (2) ◽  
pp. 117-129
Author(s):  
Hamzah Robbani ◽  
Prasetio Ariwibowo ◽  
Deny Heryadi
Keyword(s):  
Regression Analysis ◽  
Quantitative Analysis ◽  
Data Processing ◽  
Likert Scale ◽  
Coefficient Of Determination ◽  
Validity And Reliability ◽  
Process Data ◽  
Simple Regression Analysis ◽  
The City ◽  
Simple Regression

This study aims to determine the effect of problematic financing on profitability in Sharia People's Financing Banks (BPRS) in the City of Bekasi and the efforts of the management of the Islamic People's Financing Bank (BPRS) in Bekasi City in overcoming problematic financing. This research is "qualitative" namely research that studies a number of information relating to financing. To process data in this study using quantitative analysis in the form of Simple Regression analysis (Likert scale), and Coefficient of Determination Test (R2) with SPSS version 23.00. The results of data processing by researchers have the value of validity and reliability can be used as the basis for retrieval of data, and the results of simple regression analysis with r square of 0.047. shows that H0 is accepted which shows that there is no significant effect of Non Performing Financing on Profit in BPRS in Bekasi City.

scholarly journals Evaluasi karkas dan kualitas fisik daging babi pada tempat usaha pemotonggan ternak babi di Distrik Masni Kabupaten Manokwari

Cassowary ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 52-67
Author(s):  
Miksen M. Sangkek ◽  
Marlyn N. Lekitoo ◽  
Hanike Monim
Keyword(s):  
Regression Analysis ◽  
Cooking Loss ◽  
Carcass Weight ◽  
Coefficient Of Determination ◽  
Slaughter Weight ◽  
Close Relationship ◽  
Fat Thickness ◽  
Meat Ph ◽  
The Relationship

This study aims to evaluate the carcass and examine the physical quality of pork in the local pork slaughterhouse, Masni District and the relationship between slaughter weight and carcass weight, carcass percentage, carcass length, fat, pH and cooking losses. The results showed the range of slaughtering age of local pigs from 6 - 60 months (male pigs 10-12 months old and female pigs 18-20 months old). The average sliced ​​weight had a very significant effect (P <0.01) on carcass weight, while the carcass percentage had no significant effect based on the regression analysis between cut weight and carcass percentage was Y = 63.85 + 0.1463, with a coefficient of determination (R2) of 9.43%. Cut weight had a very significant effect (P <0.01) on carcass length in regression analysis Y = 37.42 + 0.3722, with a coefficient of determination (R2) of 71.48%). The regression analysis between cut weight and back fat thickness was Y = 0.322 + 0.04044, with a coefficient of determination (R2) of 39.87%, which means that cutting weight has a very significant effect (P <0.01) on the thickness of back fat, while the regression analysis of the relationship between cut weight and pH Local pork is Y = 6.357 - 0.00362, with a coefficient of determination (R2) of 5.54% that the slaughter weight has no significant effect (P> 0.05) on meat pH. Cut weight has no significant effect (P> 0.05) on cooking loss based on regression analysis is Y = 30.12 - 0.1106 with a coefficient of determination (R2) 9.63%. The results showed that cut weight has a close relationship with carcass weight, carcass length, and fat thickness but not to carcass percentage, meat pH and cooking loss.

scholarly journals Pengaruh Insentif Terhadap Kinerja Karyawan Pada Hotel Mexsicana Kota Jambi

2021 ◽  
Vol 6 (1) ◽  
pp. 96
Author(s):  
Said Almaududi ◽  
Muhammad Syukri ◽  
Camelia Puji Astuti
Keyword(s):  
Regression Analysis ◽  
Correlation Coefficient ◽  
Quantitative Data ◽  
Employee Performance ◽  
Coefficient Of Determination ◽  
Comparison Results ◽  
Independent Variable ◽  
Level Of Significance ◽  
The City ◽  
Employee Responses

The purpose of this study is to find out and describe the Incentives and Employee Performance at the Jambi City Mexsicana Hotel, and to determine the effect of the Incentives on the Employee Performance at the Jambi City Mexsicana Hotel. The type of data needed and collected in this study is quantitative data. The object of this study is the employee of the Mexsicana Hotel Jambi City. Sources of data in this study were employees of the City of Mexsicana Hotel Jambi taken through interviews by distributing questionnaires, data, and information obtained analyzed descriptively, to analyze employee responses to incentives for performance using a 5-choice scale. Based on the results of the regression analysis it was concluded that the regression equation Y = 32.316 + 0.154X + e. The correlation coefficient (R) of the independent variable is 0.767. This value indicates that the incentive relationship on Mexsicana Hotel Jambi Erat employees' performance is 0.767. While the coefficient of determination (R2) of 0.589 it means that the variation of change in Y is influenced by changes in X by 58.9%. So the magnitude of the effect of incentives on the performance of employees of the City of Mexsicana Hotel Jambi is 58.9% while the remaining 41.1% is influenced by other factors outside this study. Partially, there is an effect of incentives on the performance of Mexicicana Hotel Jambi City employees. This is indicated by the value of incentive thitung of 2.171 and ttable of 2.034 from the comparison results it can be seen that tcount is greater than ttable (thitung> ttable). Then H0 is rejected and Ha is accepted. By comparing the magnitude of the level of significance (sig) of research with a significant level of 0.05 then 0.002 <0.05 so that it can be said that there is a significant effect between incentives on the performance of employees of Mexsicana Hotel Jambi City. For the management of the City of Mexsicana Hotel Jambi, it is hoped that incentives can be noticed and increased in terms of employee performance. So that incentives for employee performance can be better in the future. Next researchers are expected to be able to conduct research using different variables from the variables studied.

scholarly journals KINERJA PERUSAHAAN PENGARUH DARI STRUKTUR MODAL, PROFITABILITAS DAN UKURAN PERUSAHAAN

2021 ◽  
Vol 14 (1) ◽  
pp. 77-86
Author(s):  
Dede Hertina ◽  
Mohamad Bayu Herdiawan Hidayat ◽  
Fika Deningtyas
Keyword(s):  
Regression Analysis ◽  
Data Processing ◽  
Capital Structure ◽  
Hypothesis Testing ◽  
Coefficient Of Determination ◽  
Company Size ◽  
Company Performance ◽  
Verification Methods ◽  
Independent Variable ◽  
The Relationship

This study aims to determine the effect of Capital Structure, Profitability, Company Size on the Performance of the cigarette sub-sector companies listed on the IDX in 2014-2018. This research uses descriptive and verification methods with regression analysis tools and the coefficient of determination. The results of data processing analysis of the coefficient of determination obtained a fairly strong and unidirectional closeness of the relationship between the independent variable and the dependent variable and has a determination coefficient value of 47.91%. The results of testing the F test hypothesis indicate that the Capital Structure, Profitability and Company Size simultaneously have a significant effect on company Performance. Hypothesis testing using t test shows that Capital Structure has no significant effect on company Performance. Profitability has a significant effect on company Performance and Company Size has a significant effect on company Performance. Keywords: Capital Structure, Profitability, Company Size, Company Performance

scholarly journals Study on the relationship of depression, anxiety, lifestyle and eating habits with the severity of reflux esophagitis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Rongxin Wang ◽  
Jing Wang ◽  
Shuiqing Hu
Keyword(s):  
Quality Of Life ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Logistic Regression Analysis ◽  
Reflux Esophagitis ◽  
Eating Habits ◽  
Positive Correlation ◽  
Relationship Of ◽  
The Relationship

Abstract Background The etiology of reflux esophagitis (RE) is multi-factorial. This study analyzed the relationship of depression, anxiety, lifestyle and eating habits with RE and its severity and further explored the impact of anxiety and depression on patients’ symptoms and quality of life. Methods From September 2016 to February 2018, a total of 689 subjects at Xuanwu Hospital Capital Medical University participated in this survey. They were divided into the RE group (patients diagnosed with RE on gastroscopy, n = 361) and the control group (healthy individuals without heartburn, regurgitation and other gastrointestinal symptoms, n = 328). The survey included general demographic information, lifestyle habits, eating habits, comorbidities, current medications, the gastroesophageal reflux disease (GERD) questionnaire (GerdQ), the Patient Health Questionnaire-9 depression scale and the General Anxiety Disorder-7 anxiety scale. Results The mean age and sex ratio of the two groups were similar. Multivariate logistic regression analysis identified the following factors as related to the onset of RE (p < 0.05): low education level; drinking strong tea; preferences for sweets, noodles and acidic foods; sleeping on a low pillow; overeating; a short interval between dinner and sleep; anxiety; depression; constipation; history of hypertension; and use of oral calcium channel blockers. Ordinal logistic regression analysis revealed a positive correlation between sleeping on a low pillow and RE severity (p = 0.025). Depression had a positive correlation with the severity of symptoms (rs = 0.375, p < 0.001) and patients’ quality of life (rs = 0.306, p < 0.001), whereas anxiety showed no such association. Conclusions Many lifestyle factors and eating habits were correlated with the onset of RE. Notably, sleeping on a low pillow was positively correlated with RE severity, and depression was positively related to the severity of symptoms and patients’ quality of life.

ANALISIS FAKTOR YANG MEMPENGARUHI GAYA KEPEMIMPINAN PERGURUAN TINGGI SWASTA DI KOTA PONTIANAK

2020 ◽  
Vol 5 (1) ◽  
pp. 16-23
Author(s):  
Asti Lestary ◽  
Juliahir Barata
Keyword(s):  
Regression Analysis ◽  
Data Processing ◽  
Leadership Style ◽  
Factors Affecting ◽  
Research Results ◽  
Cultural Organization ◽  
Available Resources

Background this study that of pts 19 who institusinya have accredited, only seven institutions ( about 37% ) have accredited b ( that was good categorry ) wholly are located in the Pontianak.This condition is allegedly affected by several factors and the internal conditions institutions such as leadership style, the quantity and quality of teachers, availability of supporting deliver pengeloaan administration and order and institutions.Refer of a whole factors, the researchers believed that the authority factors affecting the institutions is leadership style. Although other supporting factors available and adequate, but a style of leadership that is not a right actually make available resources be made of no effect. A style of its own leadership determined by a variety of factors influence it. Methods used in this study is the quantitatif approach to technique data processing using regression analysis. The factors causing as variable 1 ) situation; 2) experience and vision of leader: 3) vision (the foundation of education ); 4), communication and 5 ) cultural organization and leadership style as variable bound. The research results show that simultaneously all of these issues having a level the influence of as much as 0,947 ( extremely powerful category with the influence of as much as 89,8 %.

scholarly journals On-the-Go Grapevine Yield Estimation Using Image Analysis and Boolean Model

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Borja Millan ◽  
Santiago Velasco-Forero ◽  
Arturo Aquino ◽  
Javier Tardaguila
Keyword(s):  
Image Analysis ◽  
Boolean Model ◽  
Coefficient Of Determination ◽  
Mean Square ◽  
Yield Estimation ◽  
Model Image ◽  
Mean Error ◽  
Cluster Area ◽  
The Relationship

This paper describes a new methodology for noninvasive, objective, and automated assessment of yield in vineyards using image analysis and Boolean model. Image analysis, as an inexpensive and noninvasive procedure, has been studied for this purpose, but the effect of occlusions from the cluster or other organs of the vine has an impact that diminishes the quality of the results. To reduce the influence of the occlusions in the estimation, the number of berries was assessed using the Boolean model. To evaluate the methodology, three different datasets were studied: cluster images, manually acquired vine images, and vine images captured on-the-go using a quad. The proposed algorithm estimated the number of berries in cluster images with a root mean square error (RMSE) of 20 and a coefficient of determination (R2) of 0.80. Vine images manually taken were evaluated, providing 310 grams of mean error and R2=0.81. Finally, images captured using a quad equipped with artificial light and automatic camera triggering were also analysed. The estimation obtained applying the Boolean model had 610 grams of mean error per segment (three vines) and R2=0.78. The reliability against occlusions and segmentation errors of the Boolean model makes it ideal for vineyard yield estimation. Its application greatly improved the results when compared to a simpler estimator based on the relationship between cluster area and weight.

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