scholarly journals Pengaruh Faktor Meteorologi Terhadap Konsentrasi NO2 di Udara Ambien (Studi Kasus Bundaran Hotel Indonesia DKI Jakarta)

2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Yega Serlina
Keyword(s):  
Air Quality ◽  
Wind Speed ◽  
Power Plants ◽  
Meteorological Factors ◽  
Linear Regression Analysis ◽  
Combustion Process ◽  
Strong Relationship ◽  
Multiple Linear Regression Analysis ◽  
Concentration Data ◽  
The Relationship

A combustion process in power plants, industry and transportation can cause air pollution problems, one of which is the pollutant of Nitrogen Dioxide (NO2) gas. One of the stages of air quality management is monitoring. In monitoring air quality, there are several factors that need to be considered because they can affect the measurement, there are meteorological factors. This study analyzes how temperature, humidity, rainfall and wind speed affect the measured NO2 concentration. NO2 and meteorological concentration data were taken at the same time at the location of the DKI-1 air quality monitoring station (Bundaran Hotel Indonesia, DKI Jakarta). Analysis of the relationship between measured NO2 concentrations with temperature, humidity, rainfall and wind speed was performed using multiple linear regression analysis. The analysis showed that there was a strong relationship between NO2 concentration and four meteorological factors. The R2 value indicates the effect of the four meteorological factors on NO2 concentrations is 38.3% and the remaining 61.7% is influenced by other factors not included in the measurements in this study.

scholarly journals Application of hysplit model to evaluate the relationship between meteorological parameters and PM10 content in the atmospheric environment in Ha Noi city, Vietnam

2020 ◽  
Vol 3 (2) ◽  
pp. First
Author(s):  
Anh Dung Nguyen ◽  
Hồng Sơn Dương ◽  
Đức Hạnh Nguyễn Thế ◽  
Nguyen Dac Dong
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Wind Speed ◽  
Wind Direction ◽  
Meteorological Parameters ◽  
Meteorological Factors ◽  
Pollution Sources ◽  
Atmospheric Environment ◽  
Hysplit Model ◽  
The Relationship

Meteorology is one of the factors that plays an important role in assessing the quality of the atmospheric environment. Regarding the air pollution, especially dust and gaseous emissions, there are currently few studies on the relationship between meteorological factors and the increase in pollutant concentration. In this study, the relationship between several meteorological parameters such as temperature (TEM), wind speed (WS), wind direction (WD) and PM10 content in Hanoi were evaluated through the Spearman correlation coefficient (r) by SPSS statistical analysis software. Data includes hourly meteorological factors (temperature, wind speed and wind direction) and 24-h PM10 concentration collected at three automatic air quality monitoring stations in Hanoi in 2018. In addition, HYSPLIT model is used to determine the influence of wind direction and contribution of air pollution sources. The results show a negative correlation (r <0) between PM10 content, temperature and wind speed in dry and rainy seasons. During the dry season, Hanoi has a higher PM10 content than the remaining months of the year. This might be partly affected by outside pollution sources from the North and Northwest. The findings emphasize the dependence of air quality on local meteorological conditions and the distribution of major

scholarly journals HUBUNGAN JENIS SEDIMEN DENGAN KERAPATAN MANGROVE DI DESA TIMBULSLOKO, DEMAK

2018 ◽  
Vol 7 (4) ◽  
pp. 323-332
Author(s):  
Fadhil Mauludi ◽  
Bambang Sulardiono ◽  
Haeruddin Haeruddin
Keyword(s):  
Linear Regression Analysis ◽  
Sampling Technique ◽  
Strong Relationship ◽  
Multiple Linear Regression Analysis ◽  
Sediment Texture ◽  
Purposive Sampling ◽  
Sediment Types ◽  
Two Factors ◽  
Density Values ◽  
The Relationship

Timbulsloko adalah salah satu desa yang berada di Kecamatan Sayung, Demak. Daerah ini menjadi salah satu kawasan yang mengalami erosi secara terus menerus yang mengakibatkan luas daerahnya menjadi semakin berkurang. Dominasi mangrove yang ditemukan di desa ini adalah Rhizophora sp. dan Avicennia sp.. Tujuan dari penelitian ini adalah untuk mengetahui jenis sedimen, kerapatan mangrove serta hubungan jenis sedimen dengan kerapatan mangrove di Desa Timbulsloko, Demak. Penelitian ini dilaksanakan pada bulan April 2018. Metode penelitian yang digunakan adalah metode kuantitatif yang bersifat deskriptif dengan pemilihan lokasi penelitian menggunakan teknik purposive sampling. Lokasi sampling dibagi menjadi 3 stasiun, tiap stasiun dibagi menjadi 6 titik sampling. Hasil yang diperoleh dari jenis sedimen ketiga stasiun didominasi tekstur pasir dengan persentase pasir stasiun 1 68,78%, pasir stasiun 2 68,42%, dan pasir stasiun 3 65,91%. Bahan organik sedimen pada stasiun 1 berkisar 1,08-1,48%, stasiun 2 berkisar 0,28-1,6%, dan stasiun 3 berkisar 0,88-2,32%. Salinitas sedimen pada ketiga stasiun berkisar antara 29-30‰. Kerapatan mangrove di lokasi penelitian Desa Timbulsloko didominasi oleh jenis mangrove Avicennia sp.. Nilai kerapatan mangrove stasiun 1 berkisar 2066 - 4550 pohon/ha, stasiun 2 berkisar 2519 - 10000 pohon/ha, dan stasiun 3 berkisar 5986 - 18511 pohon/ha. Hubungan jenis sedimen dengan kerapatan mangrove jika dilihat dari analisa PCA, berdasarkan nilai loading factor kedua faktor yang terbentuk pada ketiga stasiun menunjukkan tingginya korelasi antar variabel. Sedangkan, jika dilihat dari hasil analisa regresi linear berganda menunjukkan bahwa hubungan jenis sedimen dengan kerapatan mangrove di ketiga stasiun mempunyai hubungan yang sangat kuat.  Timbulsloko is one of the villages located in Sayung District, Demak. This area became one of the areas that experienced continuous erotion which resulted the area became decreasing. The dominance of mangroves found in this area is Rhizophora sp. and Avicennia sp. The purpose of this research is to know the type of sediment texture, mangrove density and the relation of sediment texture with mangrove density in Timbulsloko village, Demak. This study was conducted in April 2018. The method of this research is descriptive quantitative method and using purposive sampling technique. Sampling area is divided into 3 stations, each station divided into 6 sampling points. The results showed that sediment types from three stations were dominated by sand texture with the percentage of station 1 sand 68.78%, station sand 2 68.42%, and station sand 3 65.91%. Sediment organic material at station 1 ranged from 1.08 to 1.48%, station 2 ranged from 0.28 to 1.6%, and station 3 ranged from 0.88 to 2.32%. Sediment salinity in three stations ranged from 29-30 ‰. Mangrove density in Timbulsloko Village is dominated by Avicennia sp.. The mangrove density values at station 1 ranged from 2066 to 4550 trees / hectare, station 2 ranged from 2519 to 10000 trees / hectare, and station 3 ranged from 5986 to 18511 trees / hectare. The relationship between the type of sediment and the density of mangroves when viewed from the PCA analysis, based on the value of loading factors from two factors formed on three stations showed the high correlation between variables. Meanwhile, when viewed from the results of multiple linear regression analysis shows that the relationship between the type of sediment and the density of mangroves in three stations has a very strong relationship. 

scholarly journals The Effect Of School Locations, Facilities And Images On Decisions To Choose Office Competency Office Of Administration In Bonavita Vocational School

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Winarsih Winarsih ◽  
Ngadino Surip
Keyword(s):  
Linear Regression Analysis ◽  
Strong Relationship ◽  
Multiple Linear Regression Analysis ◽  
Vocational School ◽  
Test Results ◽  
Partial Analysis ◽  
Sample Technique ◽  
Quantitative Analysis Method ◽  
Saturated Sample ◽  
The Relationship

This study aims to determine the relationship between location variables, facilities and school image of the decision to choose office administration competency competencies. To determine the relationship between location variables, facilities and school image, this study used a saturated sample technique of 81 respondents consisting of class X, XI, and XII Bonavita Vocational School. This study uses a quantitative analysis method with multiple linear regression analysis tools with SPSS version 23. From the analysis of test results obtained, simultaneously (F-Test ) the location, facilities and school image significantly influence the decision to choose the competency of office administration expertise at Bonavita Vocational School . Partial analysis testing (T-test) location, facilities and school image significantly influence the decision to choose office administration competency competency at Bonavita Vocational School. While the results of correlation analysis and determination obtained Adjusted R Square 0.732 results mean the location, facilities and school image determine the decision to choose a school by 73.2% while the remaining 26.8% are determined by other variables not examined in this study. And the correlation between variables is included in the strong relationship category.

scholarly journals Modelling the Additivity of Perceived Exertion in Symmetric, Mid-Sagittal Lifting

1994 ◽  
Vol 38 (10) ◽  
pp. 621-625 ◽  
Author(s):  
Brian D. Lowe
Keyword(s):  
Perceived Exertion ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Whole Body ◽  
Coefficient Of Determination ◽  
Perceived Effort ◽  
Repetitive Lifting ◽  
The Relationship ◽  
Whole Body Exertion ◽  
Lifting Task

Psychophysical approaches to quantifying perceived effort have been used to evaluate the physical demand of many industrial work activities. An experiment was conducted to examine the relationship between ratings of whole-body perceived exertion and differentiated, regional ratings of exertion. The Borg, CR-10 scale was used by 16 subjects performing a simulated repetitive lifting task. Ratings of perceived exertion were obtained for the arms, legs, torso, and central (cardiorespiratory) effort sensations as well as a rating of overall, whole-body exertion. A multiple linear regression analysis was used to predict the whole-body rating of exertion from the differentiated ratings in lifting tasks using both a squat and stoop posture. In the stoop posture condition the coefficient of determination between whole-body perceived exertion and the model including arm, torso, and central ratings was R2=0.81. In the squat posture condition, the final regression model predicting whole-body exertion contained only the rating from the legs (R2 = 0.62). Differentiated ratings explained the majority of the variance in whole-body perceived exertion for squat and stoop lifting tasks.

scholarly journals The Effect of Perceived Organizational Support on Employee’s Organizational Commitment and Employee Behavior. The case of a Construction Company in Erbil City, Kurdistan Region

2019 ◽  
Vol 8 (9S3) ◽  
pp. 1270-1275
Keyword(s):  
Organizational Commitment ◽  
Organizational Support ◽  
Perceived Organizational Support ◽  
Linear Regression Analysis ◽  
Strong Relationship ◽  
Employee Behavior ◽  
Online Questionnaire ◽  
Construction Company ◽  
The Relationship ◽  
Pearson Correlations

Lately, Perceived Organizational Support, Organizational Commitment and Employee behavior have given much concentration. The aim of this paper is to analyze the effect of Perceived Organizational Support on Organizational Commitment, and Employee Behavior. According to the prior research, there are contradicting findings regarding the relationship and significant effect between the three variables mentioned. The strategy of this research is quantitative by using an online questionnaire consisted of three validated scales. The online questionnaire has been sent to employees’ emails of a constructioncompany in Erbil city. There are 64 properly filled online questionnaires have been received. The author has used Reliability test to determine the Cronbach Alpha of the scales, the Pearson correlations to measure the relationship and Linear Regression analysis to measure the effect of independent variable on the dependent variables. The results indicate that Perceived Organizational Support has a significant effecton Employee Behavior and Organizational Commitment. Moreover, the findings also indicate a strong relationship exists between Perceived Organizational Support and Organizational Commitment.

scholarly journals The More Insufficient, the More Avoidance? Cognitive and Affective Factors that Relates to Information Behaviours in Acute Risks

2021 ◽  
Vol 12 ◽  
Author(s):  
Shuguang Zhao ◽  
Yiming Liu
Keyword(s):  
Information Seeking ◽  
Online Survey ◽  
Linear Regression Analysis ◽  
Mainland China ◽  
Multiple Linear Regression Analysis ◽  
Perceived Severity ◽  
Affective Factors ◽  
Information Avoidance ◽  
Cognitive And Affective Factors ◽  
The Relationship

This study examines the relationship between cognitive and affective factors and people's information-seeking and -avoiding behaviours in acute risks with a 1,946-sample online survey conducted in February 2020, during the outbreak of the COVID-19 pandemic in mainland China. Multiple linear regression analysis showed that perceived information insufficiency correlates negatively with information-seeking behaviour and there was an inverted U-shaped relationship between information insufficiency and avoidance behaviour. As for the risk-related cognitive factors, information seeking increases as perceived severity of risks rises, while information avoiding increases as perceived susceptibility rises. Perceived response efficacy positively correlates with information-seeking and negatively with information-avoidance behaviours. Preliminary results also indicated that different affective factors relate to information-seeking and avoidance behaviours differently.

scholarly journals The Effect of Current Ratio (CR) and Debt to Equity Ratio (DER) on Return on Equity (RoE) at PT Aneka Tambang, Tbk, Years 2010 - 2017

2019 ◽  
Vol 3 (1) ◽  
pp. 83
Author(s):  
Waluyo Jati ◽  
Tiya Sri Andini
Keyword(s):  
Linear Regression Analysis ◽  
Secondary Data ◽  
Strong Relationship ◽  
Financial Statements ◽  
Multiple Linear Regression Analysis ◽  
Coefficient Of Determination ◽  
Contribution Rate ◽  
Current Ratio ◽  
Return On Equity ◽  
Equity Ratio

The company wants an optimal profit for the business being run. This study aims to determine the effect of the current ratio (CR) on return on equity (ROE), the effect of debt to equity ratio (DER) on return on equity (ROE), and to determine the effect of current ratio (CR) and debt to equity ratio (DER) simultaneously on return on equity (ROE) at PT Aneka Tambang, Tbk in the period 2010 - 2017. The research method used is descriptive quantitative. The data used are secondary data in the form of PT Aneka Tambang, Tbk's financial statements for the period 2010-2017. The analytical method used is the classic assumption test, multiple linear regression analysis, correlation coefficient, coefficient of determination, and hypothesis testing with t-test and F test using SPSS version 20.0. The results showed no significant effect of the current ratio (CR) on return on equity (ROE), there was no significant effect of debt to equity ratio (DER) on return on equity (ROE), and there was no significant effect between the current ratio (CR) and debt to equity ratio (DER) together against return on equity (ROE). Current ratio (CR) and debt to equity ratio (DER) have a very strong relationship to return on equity (ROE). The contribution rate of the variable current ratio (CR) and the debt to equity ratio (DER) to return on equity (ROE) is 61.9%.

scholarly journals The Influence of the Application of Marketing Mix on the Purchase Decision of Prospective Consumers of Grand Cempaka Housing

2020 ◽  
Author(s):  
Gesang Sudrajad ◽  
J.E Sutanto
Keyword(s):  
Regression Analysis ◽  
Data Analysis ◽  
Quantitative Methods ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Marketing Mix ◽  
Marketing Strategies ◽  
Purchase Decision ◽  
Relationship Of ◽  
The Relationship

The purpose of this study was to examine the effect of simultaneous and partial marketing mix on the purchase decision of prospective consumers of Grand Cempaka Housing.This research uses quantitative methods, and is a survey research from the types of explanatory research whose focus is placed on relational research: studying the relationship of variables. The object of research is the residents of Pasuruan City and the sample in this study is the Prospective Consumer of Grand Cempaka Housing. Data analysis uses multiple linear regression analysis methods.The results of the analysis show that Products, Prices, Places and Promotions simultaneously have a significant effect on the Decision of Purchasing Prospective Consumers of Grand Cempaka Housing. This shows that the marketing mix is one of the marketing strategies that should be considered so that the implementation of the marketing strategy can run successfully because the elements in the marketing mix influence each other. Variables in the marketing mix which include Products, Prices, Places and Promotions partially have a significant effect on the Decision of Purchasing Prospective Consumers of Grand Cempaka Housing. Keywords: marketing mix; purchase decision; property; housing

scholarly journals Analisis Keterlibatan Fashion dan Gaya Hidup Berbelanja terhadap Pembelian Impulsif pada Distro Platt Mars Cabang Kota Sukabumi

2019 ◽  
Vol 1 (2) ◽  
pp. 310-320
Author(s):  
Rayyisa Nurul Haq ◽  
Acep Samsudin ◽  
Faizal Mulia Z
Keyword(s):  
Linear Regression Analysis ◽  
Strong Relationship ◽  
Simple Random Sampling ◽  
Multiple Linear Regression Analysis ◽  
Multiple Correlation Coefficient ◽  
Test Reliability ◽  
Coefficient Of Determination ◽  
Multiple Correlation ◽  
F Test ◽  
Fashion Involvement

The purpose of this study was to analyze the effect of fashion and lifestyle involvement on impulsive purchases of distro platt mars. The method in this study uses a type of probability sampling, including simple random sampling. The analysis technique used is the validity test, reliability test, multiple linear regression analysis including the coefficient of determination test, multiple correlation coefficients, and testing the hypothesis using the test simultaneously (F test). The results of the test of the coefficient of determination seen from the value (Adjusted R2) of 0.325 can be interpreted that the influence of Fashion Involvement and Shopping Lifestyle on Impulsive Purchases is 32.5%. The remaining 67.5% is influenced by other factors outside this study. Based on the multiple correlation coefficient test seen from the R value of 0.582 shows that there is a strong relationship between fashion involvement and shopping lifestyle with impulsive purchases. Based on the F test the probability value sig. 0,000 <0.05. Conclusions, together with Fashion Involvement (X1) and Shopping Lifestyle (X2) significantly influence Impulsive Purchase (Y). Keywords: Fashion Involvement, Shopping Lifestyle, Impulsive Purchasing

scholarly journals Association of Salivary Statherin, Calcium, and Proline-Rich Proteins on Oral Hygiene: A Cross-Sectional Study

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Deepak Gowda Sadashivappa Pateel ◽  
Shilpa Gunjal ◽  
Liew Fong Fong ◽  
Nur Sulwana Mohd Hanapi
Keyword(s):  
Oral Health ◽  
Negative Correlation ◽  
Oral Hygiene ◽  
Linear Regression Analysis ◽  
Rank Correlation ◽  
Multiple Linear Regression Analysis ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
The Relationship

Background. Saliva, as a complex biofluid, plays a pivotal role in maintaining oral health and tooth integrity. There has been inconsistent data available on the relationship between salivary parameters and oral health. This study aims to investigate the association between salivary statherin, acidic proline-rich proteins (aPRP), and calcium with oral hygiene status. Methods. One hundred and eighty-eight healthy subjects aged between 18 and 50 years with varying oral hygiene status who gave consent to participate were included in this cross-sectional study. The subjects were recruited from primary oral health care of MAHSA University. Oral hygiene of all the participants was measured using Oral Hygiene Index–Simplified (OHI-S). Stimulated saliva collected using paraffin wax was analyzed for salivary statherin, aPRP, and calcium. The relationship between salivary statherin, aPRP, and calcium levels with OHI-S was assessed using Spearman’s Rank correlation coefficient; the strength of relationship was assessed by multiple linear regression analysis. Results. The study found a weak positive correlation (r = 0.179, p  = 0.014) between salivary statherin and OHI-S; weak negative correlation (r = −0.187, p  = 0.010) between salivary aPRP and OHI-S; and moderate negative correlation between salivary statherin and salivary aPRP levels (r = −0.50, p  < 0.001) which were statistically significant. Conclusion. Poor oral hygiene is associated with increased statherin and reduced aPRP levels in saliva. Thus, these salivary components may have a role in predicting oral hygiene status.

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