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This study aims to determine the soil classification of rock disintegration products based on the Unified Soil Classification System (USCS) and analyze its relation to sample depth variations on the lowwall slope of Pit North, PT Karya Putra Borneo, Kutai Kartanegara Regency, East Kalimantan. Soil samples were obtained through the Slake Durability test, simulating rock weathering from wetting and drying cycles, producing fine particles classified as weathered soil. These samples were analyzed for physical properties using Atterberg Limits tests and Grain Size Analysis. Observation point coordinates were X 508523.011 m, Y 9922791.186 m, at an elevation of 87.548 m. Drilling indicated soil material at 0–1.5 m depth; claystone with coal fragments at 2.97–4.44 m; siltstone with coal fragments at 4.44–10.55 m; and claystone at 12.05–29.36 m. USCS classification showed the materials were dominated by fine-grained soils: clay (CL) and silt (ML), with minor silty sand (SM). Correlation with borehole depth revealed no significant changes in soil classification, indicating that depth variations primarily affect soil physical properties rather than its classification type.  

This research aims to compare coal quality based on proximate analysis in two seams with varying depths in Pit North and evaluate the relationship between depth and coal quality parameters. The research method includes taking representative samples at each seam and proximate analysis laboratory testing including inherent moisture, ash content, volatile matter, and fixed carbon. The results showed that seam 1 at an average depth of 59.8 m had an inherent moisture value of 13.51%, ash 4.68%, volatile matter 39.93%, and fixed carbon 41.88%, while seam 2 at an average depth of 82.1 m had inherent moisture 13.42%, ash 4.59%, volatile matter 40.15%, and fixed carbon. 41.84%. Correlation analysis shows that the relationship between depth and coal quality parameters is relatively weak with correlation coefficient values ​​ranging from −0.36 to 0.25 and a low coefficient of determination, so that variations in depth do not have a significant influence on coal quality at the research location.

This study aims to analyze the effect of renewable energy, energy consumption, and Gross Domestic Product (GDP) per capita on carbon dioxide (CO2) emissions in Indonesia for the period 1995-2024. This study uses secondary data over time (time series) with the Ordinary Least Square (OLS) multiple linear regression analysis method corrected using the Newey-West Heteroskedasticity and Autocorrelation Consistent (HAC) approach. The results show that renewable energy does not have a significant effect on CO2 emissions, which is caused by the still low share of renewable energy in the national energy mix which only reaches 10.95% in 2024. Energy consumption has a positive and significant effect on CO2 emissions, where every 1% increase in energy consumption increases CO2 emissions by 84.23%. Gross Domestic Product (GDP) per capita has a positive and significant effect on CO2 emissions. Every 1% increase in GDP per capita increases CO2 emissions by 35.03%, indicating that Indonesia remains on the EKC curve. Simultaneously, all three variables have a significant effect, with an adjusted R-squared value of 53.63%. This finding confirms that Indonesia's energy mix, still dominated by fossil fuels, is a major factor in high carbon emissions. Comprehensive energy efficiency policies, accelerated renewable energy transitions, and greener and more sustainable economic growth strategies are needed.

This study aimed to determine the relationship between parental involvement and mathematics learning achievement of fourth-grade students at SD Inpres 18 Sorong Regency. The research employed a quantitative approach with a correlational design. The research subjects consisted of all fourth-grade students from classes IV A and IV B, totaling 66 students. Data on parental involvement were collected using a questionnaire, while students’ mathematics achievement data were obtained from documentation of end-of-semester promotion examination scores. Data analysis was conducted using descriptive and inferential statistics. The prerequisite tests included the Kolmogorov–Smirnov normality test with a Monte Carlo approach and a linearity test. Hypothesis testing was carried out using Pearson Product Moment correlation with the assistance of SPSS software. The results showed a positive and significant relationship between parental involvement and students’ mathematics achievement, with a correlation coefficient of r = 0.637 and a significance value of p = 0.000 (p < 0.05). This correlation is categorized as strong. The findings indicate that higher levels of parental involvement in guiding, supervising, and providing emotional support are associated with higher mathematics learning achievement among students. Therefore, parental involvement plays an important role in supporting the mathematics learning success of elementary school students.

This study aims to analyze the effect of price and e-service quality on e-satisfaction at Ninetech Store on the Shopee marketplace, both partially and simultaneously. This study uses a quantitative method with an associative approach. The research subjects were Ninetech Store customers, with a sample size of 96 respondents obtained through sampling techniques using the Rao Purba formula. Data were collected through questionnaires and analyzed using validity tests, reliability tests, classical assumption tests, simple and multiple linear regression analysis, correlation coefficients, determination coefficients, and hypothesis testing. The results show that price has a positive and significant effect on e-satisfaction, as does e-service quality, which also has a positive and significant effect on e satisfaction. In addition, price and e-service quality were simultaneously proven to have a significant effect on the e-satisfaction of Ninetech Store customers on the Shopee marketplace. The results of this study are expected to be taken into consideration by Ninetech Store in formulating pricing strategies and improving the quality of electronic services to increase customer satisfaction.

This study examines the determinants of the Jakarta Composite Index (JCI) based on three main macroeconomic factors namely inflation, the USD/IDR exchange rate, and the SBI interest rate (BI Rate) covering the period January 2020 to December 2025, in the context of post-COVID-19 pandemic recovery and global economic turmoil. A quantitative approach was employed using the Ordinary Least Squares (OLS) method, with 72 monthly observations derived from secondary data sourced from official institutions including Bank Indonesia (BI), the Central Statistics Agency (BPS), the Indonesia Stock Exchange (IDX), and the Financial Services Authority (OJK). Classical assumption tests were applied comprising the Jarque-Bera normality test, Variance Inflation Factor (VIF) for multicollinearity, Breusch-Godfrey for autocorrelation, White Test for heteroscedasticity, and Ramsey RESET for model specification. Partially, inflation, exchange rate, and BI Rate each demonstrate a positive and significant effect on the JCI (p < 0.05). Simultaneously, all three variables exert a significant combined influence on the JCI, with a coefficient of determination R² = 0.4414, indicating that the model explains 44.14% of the variation in the JCI. The remaining 55.86% is attributed to other variables outside the model. Classical assumption test results reveal violations of normality, autocorrelation, and heteroscedasticity assumptions, although the model is free from multicollinearity. These findings confirm that Bank Indonesia's monetary policy has a significant and measurable impact on capital market performance. Further research is recommended using more advanced time series models such as GARCH or VECM to address violations of classical assumptions and improve estimation efficiency.

Blasting is a critical method for overburden removal in open-pit coal mines, where fragmentation quality directly impacts loading efficiency and operational costs. This study aims to analyze the actual fragmentation resulting from overburden blasting at Pit 4 Middle of PT. Victor Dua Tiga Mega, Central Kalimantan, to predict fragmentation using the Kuz-Ram model, and to evaluate the conformity of both results against the company standard (boulder size ≤144.6 cm or ≥50 cm for analysis). The research employed a quantitative comparative method. Primary data included blasting geometry and photographs of muck piles from 10 blasting events, which were analyzed using WipFrag software to obtain actual fragmentation distribution. Secondary data comprised rock characteristics and explosive properties for Kuz-Ram prediction input. The results showed significant variation in actual boulder percentage (≥50 cm), ranging from 6.19% to 32.91% with an average of 16.05% (medium category). Statistical analysis revealed a very weak negative correlation (r = -0.21) between powder factor (PF) and boulder percentage, indicating that PF is not the dominant factor within the consistent application range (0.21-0.23 kg/bcm). Comparison with Kuz-Ram predictions showed that the model consistently over-predicted coarse material, with an average difference of +25.21%, suggesting the need for rock factor (A) recalibration. It is concluded that the blasting results are inconsistent, strongly influenced by uncontrollable factors such as geological conditions. Recommendations include geometri evaluation, particularly burden and spacing, and calibration of the Kuz-Ram model for more accurate future predictions.

Financial reporting integrity is heavily reliant on audit quality. This research explores the effect of auditor attributes, specifically integrity and professional background, on audit standards in Timor-Leste. Quantitative data was collected from a survey of 60 auditors and analyzed using descriptive statistics, correlation analysis, and multiple linear regression techniques. The findings suggest that auditor ethics has a substantial positive impact on audit quality, indicating that conformity to professional ethical guidelines is vital for enhancing audit results. In contrast, experience in auditing does not demonstrate a statistically significant impact on the quality of audits. Visualization through scatter plots further supports the notion that the relationship between ethics and audit quality is more robust than that of other auditor characteristics. Strengthening ethical standards in the auditing profession is crucial to enhancing audit quality, as these findings demonstrate. This study contributes to the body of research on auditing behavior by presenting empirical findings from a developing institutional setting. The findings also have practical implications for policymakers and auditing bodies in Timor-Leste.

This study is motivated by the importance of the relationship between reading and speaking skills in Arabic language learning. Reading, as a receptive skill, plays a significant role in enriching vocabulary, understanding language structures, and constructing meaning, which in turn affects speaking ability as a productive skill. At Baitul Hidayah Islamic Boarding School in Bandung, variations were observed in students’ abilities in reading Arabic texts and speaking Arabic, raising questions about the existence of a relationship between these two skills. This study aims to determine whether there is an influence of Arabic reading skills on Arabic speaking skills among fifth-grade students (Class V-A) in the 2024/2025 academic year. This research employs a quantitative approach with a correlational design. The subjects of the study consisted of all 28 students in Class V-A, selected using a saturated sampling technique. Data were collected through reading skill tests and speaking skill tests, and subsequently analyzed using descriptive statistics and the Spearman rank correlation test. The results indicate a significant relationship with a strong level of correlation between Arabic reading skills and Arabic speaking skills. This is evidenced by the correlation coefficient (r-value) of 0.824, which is higher than the r-table value at a 5% significance level (0.374). It is recommended that the development of reading skills be more systematically integrated with speaking practice. Further research is suggested to involve a larger sample size and more diverse variables to strengthen the findings.

This study is motivated by the importance of the relationship between reading and speaking skills in Arabic language learning. Reading, as a receptive skill, plays a significant role in enriching vocabulary, understanding language structures, and constructing meaning, which in turn affects speaking ability as a productive skill. At Baitul Hidayah Islamic Boarding School in Bandung, variations were observed in students’ abilities in reading Arabic texts and speaking Arabic, raising questions about the existence of a relationship between these two skills. This study aims to determine whether there is an influence of Arabic reading skills on Arabic speaking skills among fifth-grade students (Class V-A) in the 2024/2025 academic year. This research employs a quantitative approach with a correlational design. The subjects of the study consisted of all 28 students in Class V-A, selected using a saturated sampling technique. Data were collected through reading skill tests and speaking skill tests, and subsequently analyzed using descriptive statistics and the Spearman rank correlation test. The results indicate a significant relationship with a strong level of correlation between Arabic reading skills and Arabic speaking skills. This is evidenced by the correlation coefficient (r-value) of 0.824, which is higher than the r-table value at a 5% significance level (0.374). It is recommended that the development of reading skills be more systematically integrated with speaking practice. Further research is suggested to involve a larger sample size and more diverse variables to strengthen the findings.

This study aims to analyze the influence of Relationship Marketing (X1), Service Quality (X2) and Brand Attachment (X3) on Member Loyalty (Y) at the Usaha Sejahtera Credit Cooperative. The sample used was 100 respondents, with the sampling method using non-probability sampling with simple random sampling technique. The initial analysis on the research instrument, by transforming ordinal data to interval data using the Method of Successive Interval (MSI) then the data was further analyzed using SPSS (Statistical Product and Service Solutions) version 31. The data analysis carried out was Validity Test, Reliability Test, Classical Assumption Test (Normality Test, Multicollinearity Test, Heteroscedasticity Test (Glejser Test), Linearity Test, Correlation, Multiple Linear Regression and Coefficient of Determination), Hypothesis Test (t test). The results of the study showed that Relationship Marketing (X1) partially had a significant effect on Member Loyalty (Y). Service Quality (X2) partially had a significant effect on Member Loyalty (Y). Brand Attachment (X3) has a partial and significant influence on Member Loyalty (Y).

This research is motivated by the issue of employee productivity at Estetiderma Clinic Bekasi, as indicated by the unmet distribution target data during the 2021–2024 period. In addition, there are indications that improvements are needed in the effectiveness of recruitment methods and employee work discipline, as reflected in the attendance data. The purpose of this study is to determine whether recruitment (X1) and work discipline (X2) have an effect on employee productivity (Y), either partially or simultaneously, at Estetiderma Clinic Bekasi. The research method used is associative quantitative research. The population and sample consist of all 130 employees of Estetiderma Clinic Bekasi. The data analysis techniques employed include multiple linear regression analysis, correlation coefficient analysis, coefficient of determination, and hypothesis testing (t-test and F-test). The results of the study show that: (1) the recruitment variable (X1) has a t-value of 9,503 > t-table 1.978 and a significance value of 0.000 < 0.05, indicating a positive and significant effect of recruitment on employee productivity; (2) the work discipline variable (X2) has a t-value of 13,154 > t-table 1.978 and a significance value of 0.000 < 0.05, indicating that work discipline has a positive and significant effect on employee productivity; and (3) the simultaneous F-test result shows an F-value of 114.347 > F-table 3.067 with a significance value of 0.000 < 0.05, which means that recruitment and work discipline simultaneously have a significant effect on employee productivity. These two variables contribute 64.3% to employee productivity, while the remaining 35.7% is influenced by other factors not included in this study.

The implementation of digital health information systems, such as e-Puskesmas, plays an important role in supporting electronic medical records in primary healthcare facilities. However, technical constraints, including network instability and system integration issues, may affect user satisfaction among healthcare workers. This study aims to analyze healthcare workers’ satisfaction in using e-Puskesmas based on the End User Computing Satisfaction (EUCS) method. This research employed a quantitative analytic approach with a cross-sectional design, involving 35 healthcare workers at Puskesmas Klangenan using total sampling. The variables consisted of five EUCS dimensions, namely content, accuracy, format, ease of use, and timeliness. Data were collected using a structured questionnaire with a Likert scale and analyzed using descriptive statistics and Spearman correlation test. The results showed that user satisfaction was categorized as very satisfied across all EUCS dimensions, with mean scores ranging from 4.11 to 4.47. All EUCS dimensions had a positive and significant relationship with user satisfaction (p < 0.05), with format and ease of use showing the strongest correlations. It can be concluded that the quality of system and information in e-Puskesmas significantly influences healthcare workers’ satisfaction, indicating the need for continuous system development to support optimal healthcare services.

Lumbar flexibility refers to the maximum capacity of the muscles in the lumbar spine to move freely. Impairment in functional movement may lead to restricted mobility, which can be influenced by disruption of biomotor components, particularly lumbar spinal flexibility. Flexibility may be affected by both internal and external factors, including age and duration of sitting during work. This study aimed to analyze the relationship between sitting duration and age with lumbar flexibility using the Modified Schober Test among employees of PT Bank Syariah Indonesia, Lhokseumawe City. This study applied a cross-sectional design and was conducted in December 2023 in the prayer room area of the PT Bank Syariah Indonesia branch office. Sampling was carried out using a total sampling technique involving 46 respondents. Data collection was performed by measuring lumbar flexibility using the Modified Schober Test method. The results showed that the highest proportion of respondents had limited lumbar flexibility, accounting for 24 respondents (52.2%). The majority of respondents had a sitting duration of 7–9 hours, totaling 26 respondents (56.5%), while the largest age group was 26–35 years, consisting of 23 respondents (50%). Spearman-Rank correlation analysis demonstrated a relationship between sitting duration and lumbar flexibility measured by the Modified Schober Test (r = 0.662). In addition, the relationship between age and lumbar flexibility also showed a correlation based on the Spearman-Rank test (r = -0.321). The study concluded that longer sitting duration and increasing age were associated with greater limitation in lumbar flexibility among employees of PT Bank Syariah Indonesia, Lhokseumawe City.

Type 2 diabetes mellitus is a chronic condition marked by elevated blood glucose levels resulting from insulin resistance and decreased insulin secretion. Effective glycemic control is crucial to prevent complications, and HbA1c is commonly utilized as an indicator of long-term blood glucose levels. This study aimed to examine the relationship between HbA1c levels and blood glucose levels among patients with type 2 diabetes mellitus at Tilamuta Community Health Center, Boalemo Regency, Gorontalo Province. This study employed an analytical cross-sectional design using a total sampling method, involving 557 patients. Data were collected from laboratory records and analyzed through descriptive statistics, the Shapiro-Wilk test for normality, Spearman correlation, and chi-square test. The findings indicated that the average HbA1c level was 7.39%, while the mean blood glucose level was 205.85 mg/dL. A significant and very strong positive correlation was found between HbA1c and blood glucose levels (p=0.000; r=0.862). Furthermore, medication adherence showed a significant association with HbA1c status (p=0.000). These results underscore the role of HbA1c as a dependable marker for assessing glycemic control and highlight the importance of medication adherence in optimizing the management of type 2 diaType 2 diabetes mellitus is a chronic condition marked by elevated blood glucose levels resulting from insulin resistance and decreased insulin secretion. Effective glycemic control is crucial to prevent complications, and HbA1c is commonly utilized as an indicator of long-term blood glucose levels. This study aimed to examine the relationship between HbA1c levels and blood glucose levels among patients with type 2 diabetes mellitus at Tilamuta Community Health Center, Boalemo Regency, Gorontalo Province. This study employed an analytical cross-sectional design using a total sampling method, involving 557 patients. Data were collected from laboratory records and analyzed through descriptive statistics, the Shapiro-Wilk test for normality, Spearman correlation, and chi-square test. The findings indicated that the average HbA1c level was 7.39%, while the mean blood glucose level was 205.85 mg/dL. A significant and very strong positive correlation was found between HbA1c and blood glucose levels (p=0.000; r=0.862). Furthermore, medication adherence showed a significant association with HbA1c status (p=0.000). These results underscore the role of HbA1c as a dependable marker for assessing glycemic control and highlight the importance of medication adherence in optimizing the management of type 2 diabetes mellitus.betes mellitus.  

Immunization is a preventive measure used to protect against Tuberculosis, Diphtheria, Pertussis, Polio, Hepatitis B, and Measles. Immunization administration must be continuous, comprehensive, and conducted according to standards to provide effective health protection. The objective of this study was to determine the correlation between paternal support and the immunization status of children aged 0 to 1 year in the Tamban Baru Community hEalth Center area, Kapuas Regency. This study used a cross-sectional correlation design. The independent variable was paternal support, and the dependent variable was immunization status. The sample was selected using total sampling technique, consisting of 50 respondents. Data collection was performed using a questionnaire. The results showed a significant correlation between paternal support and the immunization status of children aged 0 to 1 year, indicated by p = 0.000017 < 0.005; thus, the null hypothesis (H0) was rejected and the alternative hypothesis (H1) accepted. This means that there is a correlation between paternal support and the immunization status of children aged 0 to 1 year. It is recommended that that cross-sector collaboration and Community Health Center authorities enhance efforts so that every immunization officer provides health education, such as counseling about immunization, and that family involvement in spreading immunization programs is increased to achieve targeted coverage through cooperation with health professionals.

This study aims to determine the effect of the physical work environment and work motivation on the performance of employees of PT Pancaran Indonesia Kabupaten Tangerang, Depok City, both partially and simultaneously. The method used is a quantitative method with a causal associative approach and probability sampling technique with a sample of 82 and processed using SPSS 25. Data analysis using validity test, reliability test, classic assumption test, regression analysis, correlation coefficient analysis, coefficient of determination analysis, and hypothesis testing. The results of the study show that the physical work environment has a value of tcount > ttable or (3,714 > 1.994). Work motivation has a tcount > ttable or (11,852 > 1.994). The physical work environment and work motivation have Fcount > Ftable or (72, 865 > 2,737). This is also reinforced by the ρ value < Sig.0.05 or (0.000 <0.05). there is a significant effect simultaneously between the physical work environment (X1) and work motivation (X2) on employee performance (Y) with a contribution of 67,9% while the remaining 32,1% is influenced by other factors outside this study. The multiple linear regression equation Y = 5,949 + 0,067X1 + 0,985X2 + e.

Students in the transition period are vulnerable to experiencing mental health problems and tend to self-diagnose due to easy access to information and low mental health literacy. This research aims to determine the relationship between mental health literacy and the tendency to make a diagnosis in students at the Faculty of Public Health, Nusa Cendana University, Kupang. This type of research is quantitative research with a correlational approach. Respondents in this study numbered 301 people using probability sampling techniques. Data collection techniques used the mental health literacy scale and self-diagnosis scale. Data analysis uses the product moment correlation test. The research results show that there is a significant negative relationship between mental health literacy and self-diagnosis (r = -0.846 < 0.05), which means that the higher the mental health literacy, the lower the tendency for self-diagnosis in students, and vice versa. In addition, mental health literacy contributed 71.6% to the tendency of self-diagnosis. It is hoped that students not only have a high level of mental health literacy but also quality, so that they realize that self-diagnosis is an inappropriate action and students are expected to take advantage of available professional mental health services.

Slope stability studies are crucial in determining the sustainability and operational safety of mining activities. This research was conducted to analyze the correlation between rock porosity and Unconfined Compressive Strength (UCS) results, as well as the corrleations between Point Load Index (PLI) and Unconfoned Compressive Strength (UCS) results. These two correlations form the primary components of the study. Three types of rock were tested claystone, coal, and siltstone. The results of the study are as follows for the correlation between porosity and Unconfoned Compressive Strength (UCS), claystone yielded a coefficient of determination (R2) of 0.32 is classified as weak correlation, with the linear regression equation Y=-0.11X+6.98. Coal yielded an (R2) of 0.56 is classified a moderate correlation, with the equation Y=-1.98X+103.77. Siltstone yielded an (R2) of 0.86 is classified a strong correlation, with the equation Y=-0.38X+20.02. Regarding the correlation between Point Load Index (PLI) and Unconfoned Compressive Strength (UCS), claystone achieved an (R2) of 0.12 is classified a very weak correlation, with the linear regression equation Y=8.91X. Coal achieved an (R2) of -0.27 is classified a very weak correlation, with the equation Y=27.87X. Lastly, siltstone achieved an (R2) of -0.45 is classified a very weak correlation, with the linear regression equation Y=24,90X.

The phenomenon of academic procrastination is a serious obstacle in the world of education, manifesting as a deliberate delay in starting or completing school assignments. This behavior leads to a decline in academic achievement and an increase in student anxiety when approaching deadlines. This article aims to examine the effectiveness of time management as a strategy to reduce academic procrastination behavior in students through a comprehensive literature review. The research method employed is library research, using content analysis techniques on scientific journal articles and previous research findings relevant within the last ten years. The research findings indicate a significant negative correlation between time management and academic procrastination, where the ability to prioritize and adhere to schedules effectively can lower the level of task delay. Furthermore, intervention through guidance and counseling services using self-management techniques has proven to be a strategic solution in enhancing student learning independence. The implications of this study emphasize the importance of the role of Guidance and Counseling teachers in integrating time management training into guidance programs to support students' sustainable academic effectiveness.